./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/pthread-wmm/safe015_pso.oepc_pso.opt_tso.oepc_tso.opt.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 839c364b Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c8eb6be-9e97-40b0-9237-5dbbf07260ee/bin/uautomizer-DrprNOufMa/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c8eb6be-9e97-40b0-9237-5dbbf07260ee/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_9c8eb6be-9e97-40b0-9237-5dbbf07260ee/bin/uautomizer-DrprNOufMa/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c8eb6be-9e97-40b0-9237-5dbbf07260ee/bin/uautomizer-DrprNOufMa/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread-wmm/safe015_pso.oepc_pso.opt_tso.oepc_tso.opt.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c8eb6be-9e97-40b0-9237-5dbbf07260ee/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_9c8eb6be-9e97-40b0-9237-5dbbf07260ee/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 5350e4ca2594121b974c795f0a5f8bd0219ad1e56ba65ceaff14b5f6479d7178 --- Real Ultimate output --- This is Ultimate 0.2.2-hotfix-svcomp22-839c364 [2021-12-06 19:45:15,584 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-06 19:45:15,586 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-06 19:45:15,615 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-06 19:45:15,616 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-06 19:45:15,617 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-06 19:45:15,619 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-06 19:45:15,621 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-06 19:45:15,623 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-06 19:45:15,624 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-06 19:45:15,625 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-06 19:45:15,626 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-06 19:45:15,626 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-06 19:45:15,628 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-06 19:45:15,629 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-06 19:45:15,631 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-06 19:45:15,631 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-06 19:45:15,633 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-06 19:45:15,635 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-06 19:45:15,637 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-06 19:45:15,639 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-06 19:45:15,640 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-06 19:45:15,642 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-06 19:45:15,643 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-06 19:45:15,646 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-06 19:45:15,647 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-06 19:45:15,647 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-06 19:45:15,648 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-06 19:45:15,649 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-06 19:45:15,650 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-06 19:45:15,650 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-06 19:45:15,651 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-06 19:45:15,652 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-06 19:45:15,652 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-06 19:45:15,653 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-06 19:45:15,654 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-06 19:45:15,654 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-06 19:45:15,654 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-06 19:45:15,654 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-06 19:45:15,655 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-06 19:45:15,655 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-06 19:45:15,656 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c8eb6be-9e97-40b0-9237-5dbbf07260ee/bin/uautomizer-DrprNOufMa/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-12-06 19:45:15,678 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-06 19:45:15,678 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-06 19:45:15,678 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-06 19:45:15,679 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-06 19:45:15,679 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-06 19:45:15,679 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-06 19:45:15,680 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-06 19:45:15,680 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-06 19:45:15,680 INFO L138 SettingsManager]: * Use SBE=true [2021-12-06 19:45:15,680 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-06 19:45:15,680 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-06 19:45:15,681 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-06 19:45:15,681 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-06 19:45:15,681 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-06 19:45:15,681 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-06 19:45:15,681 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-06 19:45:15,681 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-06 19:45:15,682 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-06 19:45:15,682 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-06 19:45:15,682 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-06 19:45:15,682 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-06 19:45:15,682 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-06 19:45:15,682 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-06 19:45:15,682 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-06 19:45:15,682 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-06 19:45:15,682 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-06 19:45:15,683 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-06 19:45:15,683 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-06 19:45:15,683 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-06 19:45:15,683 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-06 19:45:15,683 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-06 19:45:15,683 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-06 19:45:15,683 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-06 19:45:15,683 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-06 19:45:15,683 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_9c8eb6be-9e97-40b0-9237-5dbbf07260ee/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c8eb6be-9e97-40b0-9237-5dbbf07260ee/bin/uautomizer-DrprNOufMa Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 5350e4ca2594121b974c795f0a5f8bd0219ad1e56ba65ceaff14b5f6479d7178 [2021-12-06 19:45:15,873 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-06 19:45:15,891 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-06 19:45:15,894 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-06 19:45:15,895 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-06 19:45:15,895 INFO L275 PluginConnector]: CDTParser initialized [2021-12-06 19:45:15,897 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c8eb6be-9e97-40b0-9237-5dbbf07260ee/bin/uautomizer-DrprNOufMa/../../sv-benchmarks/c/pthread-wmm/safe015_pso.oepc_pso.opt_tso.oepc_tso.opt.i [2021-12-06 19:45:15,936 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c8eb6be-9e97-40b0-9237-5dbbf07260ee/bin/uautomizer-DrprNOufMa/data/1f3fffe0c/273e904b605b47f48d9fb26bc35eedb6/FLAG84ace1a63 [2021-12-06 19:45:16,324 INFO L306 CDTParser]: Found 1 translation units. [2021-12-06 19:45:16,325 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c8eb6be-9e97-40b0-9237-5dbbf07260ee/sv-benchmarks/c/pthread-wmm/safe015_pso.oepc_pso.opt_tso.oepc_tso.opt.i [2021-12-06 19:45:16,335 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c8eb6be-9e97-40b0-9237-5dbbf07260ee/bin/uautomizer-DrprNOufMa/data/1f3fffe0c/273e904b605b47f48d9fb26bc35eedb6/FLAG84ace1a63 [2021-12-06 19:45:16,711 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c8eb6be-9e97-40b0-9237-5dbbf07260ee/bin/uautomizer-DrprNOufMa/data/1f3fffe0c/273e904b605b47f48d9fb26bc35eedb6 [2021-12-06 19:45:16,714 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-06 19:45:16,715 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-06 19:45:16,717 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-06 19:45:16,717 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-06 19:45:16,721 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-06 19:45:16,722 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.12 07:45:16" (1/1) ... [2021-12-06 19:45:16,724 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2f4141bd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 07:45:16, skipping insertion in model container [2021-12-06 19:45:16,724 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.12 07:45:16" (1/1) ... [2021-12-06 19:45:16,734 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-06 19:45:16,775 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-06 19:45:16,896 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_9c8eb6be-9e97-40b0-9237-5dbbf07260ee/sv-benchmarks/c/pthread-wmm/safe015_pso.oepc_pso.opt_tso.oepc_tso.opt.i[975,988] [2021-12-06 19:45:16,997 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-06 19:45:17,003 INFO L203 MainTranslator]: Completed pre-run [2021-12-06 19:45:17,012 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_9c8eb6be-9e97-40b0-9237-5dbbf07260ee/sv-benchmarks/c/pthread-wmm/safe015_pso.oepc_pso.opt_tso.oepc_tso.opt.i[975,988] [2021-12-06 19:45:17,033 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-06 19:45:17,058 INFO L208 MainTranslator]: Completed translation [2021-12-06 19:45:17,059 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 07:45:17 WrapperNode [2021-12-06 19:45:17,059 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-06 19:45:17,060 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-06 19:45:17,060 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-06 19:45:17,060 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-06 19:45:17,065 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 07:45:17" (1/1) ... [2021-12-06 19:45:17,075 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 07:45:17" (1/1) ... [2021-12-06 19:45:17,090 INFO L137 Inliner]: procedures = 176, calls = 55, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 70 [2021-12-06 19:45:17,091 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-06 19:45:17,091 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-06 19:45:17,091 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-06 19:45:17,091 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-06 19:45:17,097 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 07:45:17" (1/1) ... [2021-12-06 19:45:17,097 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 07:45:17" (1/1) ... [2021-12-06 19:45:17,100 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 07:45:17" (1/1) ... [2021-12-06 19:45:17,100 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 07:45:17" (1/1) ... [2021-12-06 19:45:17,105 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 07:45:17" (1/1) ... [2021-12-06 19:45:17,106 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 07:45:17" (1/1) ... [2021-12-06 19:45:17,108 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 07:45:17" (1/1) ... [2021-12-06 19:45:17,110 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-06 19:45:17,110 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-06 19:45:17,111 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-06 19:45:17,111 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-06 19:45:17,111 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 07:45:17" (1/1) ... [2021-12-06 19:45:17,118 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-06 19:45:17,130 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c8eb6be-9e97-40b0-9237-5dbbf07260ee/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 19:45:17,141 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c8eb6be-9e97-40b0-9237-5dbbf07260ee/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-12-06 19:45:17,145 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c8eb6be-9e97-40b0-9237-5dbbf07260ee/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-12-06 19:45:17,179 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-12-06 19:45:17,179 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-12-06 19:45:17,179 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-06 19:45:17,179 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-12-06 19:45:17,179 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-12-06 19:45:17,179 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2021-12-06 19:45:17,180 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2021-12-06 19:45:17,180 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2021-12-06 19:45:17,180 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2021-12-06 19:45:17,180 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2021-12-06 19:45:17,180 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2021-12-06 19:45:17,180 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-06 19:45:17,180 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-12-06 19:45:17,180 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-06 19:45:17,180 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-06 19:45:17,181 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 19:45:17,255 INFO L236 CfgBuilder]: Building ICFG [2021-12-06 19:45:17,256 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-06 19:45:17,353 INFO L277 CfgBuilder]: Performing block encoding [2021-12-06 19:45:17,358 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-06 19:45:17,359 INFO L301 CfgBuilder]: Removed 0 assume(true) statements. [2021-12-06 19:45:17,360 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.12 07:45:17 BoogieIcfgContainer [2021-12-06 19:45:17,360 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-06 19:45:17,362 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-06 19:45:17,362 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-06 19:45:17,364 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-06 19:45:17,364 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.12 07:45:16" (1/3) ... [2021-12-06 19:45:17,365 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@26ec8004 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.12 07:45:17, skipping insertion in model container [2021-12-06 19:45:17,365 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 07:45:17" (2/3) ... [2021-12-06 19:45:17,365 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@26ec8004 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.12 07:45:17, skipping insertion in model container [2021-12-06 19:45:17,366 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.12 07:45:17" (3/3) ... [2021-12-06 19:45:17,366 INFO L111 eAbstractionObserver]: Analyzing ICFG safe015_pso.oepc_pso.opt_tso.oepc_tso.opt.i [2021-12-06 19:45:17,370 WARN L149 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-12-06 19:45:17,370 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-06 19:45:17,371 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-06 19:45:17,371 INFO L513 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-12-06 19:45:17,396 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 19:45:17,396 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 19:45:17,396 WARN L322 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 19:45:17,396 WARN L322 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 19:45:17,396 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 19:45:17,397 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 19:45:17,397 WARN L322 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 19:45:17,397 WARN L322 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 19:45:17,397 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 19:45:17,398 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 19:45:17,398 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 19:45:17,398 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 19:45:17,398 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 19:45:17,399 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 19:45:17,399 WARN L322 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 19:45:17,399 WARN L322 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 19:45:17,399 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 19:45:17,399 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 19:45:17,399 WARN L322 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 19:45:17,400 WARN L322 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 19:45:17,400 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 19:45:17,400 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 19:45:17,400 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 19:45:17,401 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 19:45:17,401 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 19:45:17,401 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 19:45:17,401 WARN L322 ript$VariableManager]: TermVariabe P2Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 19:45:17,401 WARN L322 ript$VariableManager]: TermVariabe P2Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 19:45:17,402 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 19:45:17,402 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 19:45:17,402 WARN L322 ript$VariableManager]: TermVariabe P2Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 19:45:17,402 WARN L322 ript$VariableManager]: TermVariabe P2Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 19:45:17,403 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 19:45:17,403 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 19:45:17,403 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 19:45:17,403 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 19:45:17,406 WARN L322 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 19:45:17,407 WARN L322 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 19:45:17,407 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 19:45:17,407 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 19:45:17,410 WARN L322 ript$VariableManager]: TermVariabe P2Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 19:45:17,410 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 19:45:17,411 WARN L322 ript$VariableManager]: TermVariabe P2Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 19:45:17,411 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 19:45:17,412 WARN L322 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 19:45:17,413 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 19:45:17,413 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 19:45:17,413 WARN L322 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 19:45:17,414 INFO L148 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-12-06 19:45:17,457 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-06 19:45:17,464 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 19:45:17,464 INFO L340 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2021-12-06 19:45:17,481 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 99 places, 91 transitions, 197 flow [2021-12-06 19:45:17,521 INFO L129 PetriNetUnfolder]: 2/88 cut-off events. [2021-12-06 19:45:17,521 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-12-06 19:45:17,524 INFO L84 FinitePrefix]: Finished finitePrefix Result has 98 conditions, 88 events. 2/88 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 46 event pairs, 0 based on Foata normal form. 0/85 useless extension candidates. Maximal degree in co-relation 68. Up to 2 conditions per place. [2021-12-06 19:45:17,524 INFO L82 GeneralOperation]: Start removeDead. Operand has 99 places, 91 transitions, 197 flow [2021-12-06 19:45:17,529 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 83 places, 74 transitions, 157 flow [2021-12-06 19:45:17,550 INFO L129 PetriNetUnfolder]: 1/73 cut-off events. [2021-12-06 19:45:17,550 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-12-06 19:45:17,551 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-06 19:45:17,551 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] [2021-12-06 19:45:17,552 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-12-06 19:45:17,557 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 19:45:17,557 INFO L85 PathProgramCache]: Analyzing trace with hash -1788437869, now seen corresponding path program 1 times [2021-12-06 19:45:17,566 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 19:45:17,566 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1101865024] [2021-12-06 19:45:17,566 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:45:17,567 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 19:45:17,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:45:17,904 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 19:45:17,905 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 19:45:17,905 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1101865024] [2021-12-06 19:45:17,905 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1101865024] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 19:45:17,905 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 19:45:17,906 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-06 19:45:17,907 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [783908242] [2021-12-06 19:45:17,908 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 19:45:17,914 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-06 19:45:17,914 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 19:45:17,933 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-06 19:45:17,935 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-12-06 19:45:17,939 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 68 out of 91 [2021-12-06 19:45:17,943 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 74 transitions, 157 flow. Second operand has 7 states, 7 states have (on average 69.85714285714286) internal successors, (489), 7 states have internal predecessors, (489), 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 19:45:17,944 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-06 19:45:17,944 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 68 of 91 [2021-12-06 19:45:17,945 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-06 19:45:18,258 INFO L129 PetriNetUnfolder]: 501/1171 cut-off events. [2021-12-06 19:45:18,258 INFO L130 PetriNetUnfolder]: For 15/15 co-relation queries the response was YES. [2021-12-06 19:45:18,263 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2031 conditions, 1171 events. 501/1171 cut-off events. For 15/15 co-relation queries the response was YES. Maximal size of possible extension queue 87. Compared 7121 event pairs, 8 based on Foata normal form. 42/1166 useless extension candidates. Maximal degree in co-relation 1994. Up to 222 conditions per place. [2021-12-06 19:45:18,268 INFO L132 encePairwiseOnDemand]: 78/91 looper letters, 26 selfloop transitions, 8 changer transitions 56/144 dead transitions. [2021-12-06 19:45:18,268 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 95 places, 144 transitions, 483 flow [2021-12-06 19:45:18,269 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-12-06 19:45:18,271 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2021-12-06 19:45:18,279 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 980 transitions. [2021-12-06 19:45:18,283 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8284023668639053 [2021-12-06 19:45:18,283 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 980 transitions. [2021-12-06 19:45:18,284 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 980 transitions. [2021-12-06 19:45:18,286 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-06 19:45:18,288 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 980 transitions. [2021-12-06 19:45:18,299 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 75.38461538461539) internal successors, (980), 13 states have internal predecessors, (980), 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 19:45:18,307 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 91.0) internal successors, (1274), 14 states have internal predecessors, (1274), 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 19:45:18,308 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 91.0) internal successors, (1274), 14 states have internal predecessors, (1274), 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 19:45:18,309 INFO L186 Difference]: Start difference. First operand has 83 places, 74 transitions, 157 flow. Second operand 13 states and 980 transitions. [2021-12-06 19:45:18,310 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 95 places, 144 transitions, 483 flow [2021-12-06 19:45:18,313 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 92 places, 144 transitions, 478 flow, removed 0 selfloop flow, removed 3 redundant places. [2021-12-06 19:45:18,315 INFO L242 Difference]: Finished difference. Result has 104 places, 78 transitions, 256 flow [2021-12-06 19:45:18,317 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=91, PETRI_DIFFERENCE_MINUEND_FLOW=152, PETRI_DIFFERENCE_MINUEND_PLACES=80, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=73, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=65, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=256, PETRI_PLACES=104, PETRI_TRANSITIONS=78} [2021-12-06 19:45:18,320 INFO L334 CegarLoopForPetriNet]: 83 programPoint places, 21 predicate places. [2021-12-06 19:45:18,320 INFO L470 AbstractCegarLoop]: Abstraction has has 104 places, 78 transitions, 256 flow [2021-12-06 19:45:18,320 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 69.85714285714286) internal successors, (489), 7 states have internal predecessors, (489), 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 19:45:18,320 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-06 19:45:18,321 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] [2021-12-06 19:45:18,321 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-06 19:45:18,321 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-12-06 19:45:18,322 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 19:45:18,322 INFO L85 PathProgramCache]: Analyzing trace with hash -1518365056, now seen corresponding path program 1 times [2021-12-06 19:45:18,322 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 19:45:18,322 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1846116396] [2021-12-06 19:45:18,322 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:45:18,322 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 19:45:18,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:45:18,452 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 19:45:18,452 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 19:45:18,452 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1846116396] [2021-12-06 19:45:18,452 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1846116396] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 19:45:18,453 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 19:45:18,453 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-06 19:45:18,453 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1065878749] [2021-12-06 19:45:18,453 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 19:45:18,454 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-06 19:45:18,454 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 19:45:18,455 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-06 19:45:18,455 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-12-06 19:45:18,457 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 68 out of 91 [2021-12-06 19:45:18,458 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 104 places, 78 transitions, 256 flow. Second operand has 7 states, 7 states have (on average 70.14285714285714) internal successors, (491), 7 states have internal predecessors, (491), 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 19:45:18,458 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-06 19:45:18,458 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 68 of 91 [2021-12-06 19:45:18,458 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-06 19:45:18,687 INFO L129 PetriNetUnfolder]: 284/739 cut-off events. [2021-12-06 19:45:18,687 INFO L130 PetriNetUnfolder]: For 1870/2761 co-relation queries the response was YES. [2021-12-06 19:45:18,690 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2599 conditions, 739 events. 284/739 cut-off events. For 1870/2761 co-relation queries the response was YES. Maximal size of possible extension queue 62. Compared 4047 event pairs, 20 based on Foata normal form. 21/733 useless extension candidates. Maximal degree in co-relation 2549. Up to 189 conditions per place. [2021-12-06 19:45:18,694 INFO L132 encePairwiseOnDemand]: 80/91 looper letters, 28 selfloop transitions, 11 changer transitions 52/145 dead transitions. [2021-12-06 19:45:18,695 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 107 places, 145 transitions, 950 flow [2021-12-06 19:45:18,695 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-12-06 19:45:18,695 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2021-12-06 19:45:18,697 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 965 transitions. [2021-12-06 19:45:18,698 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8157227387996618 [2021-12-06 19:45:18,698 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 965 transitions. [2021-12-06 19:45:18,698 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 965 transitions. [2021-12-06 19:45:18,699 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-06 19:45:18,699 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 965 transitions. [2021-12-06 19:45:18,701 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 74.23076923076923) internal successors, (965), 13 states have internal predecessors, (965), 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 19:45:18,704 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 91.0) internal successors, (1274), 14 states have internal predecessors, (1274), 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 19:45:18,705 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 91.0) internal successors, (1274), 14 states have internal predecessors, (1274), 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 19:45:18,705 INFO L186 Difference]: Start difference. First operand has 104 places, 78 transitions, 256 flow. Second operand 13 states and 965 transitions. [2021-12-06 19:45:18,705 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 107 places, 145 transitions, 950 flow [2021-12-06 19:45:18,712 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 103 places, 145 transitions, 922 flow, removed 12 selfloop flow, removed 4 redundant places. [2021-12-06 19:45:18,715 INFO L242 Difference]: Finished difference. Result has 115 places, 85 transitions, 397 flow [2021-12-06 19:45:18,715 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=91, PETRI_DIFFERENCE_MINUEND_FLOW=248, PETRI_DIFFERENCE_MINUEND_PLACES=91, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=78, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=397, PETRI_PLACES=115, PETRI_TRANSITIONS=85} [2021-12-06 19:45:18,716 INFO L334 CegarLoopForPetriNet]: 83 programPoint places, 32 predicate places. [2021-12-06 19:45:18,716 INFO L470 AbstractCegarLoop]: Abstraction has has 115 places, 85 transitions, 397 flow [2021-12-06 19:45:18,716 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 70.14285714285714) internal successors, (491), 7 states have internal predecessors, (491), 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 19:45:18,716 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-06 19:45:18,716 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] [2021-12-06 19:45:18,717 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-06 19:45:18,717 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-12-06 19:45:18,717 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 19:45:18,717 INFO L85 PathProgramCache]: Analyzing trace with hash 317016623, now seen corresponding path program 1 times [2021-12-06 19:45:18,717 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 19:45:18,718 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1235376040] [2021-12-06 19:45:18,718 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:45:18,718 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 19:45:18,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:45:18,820 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 19:45:18,820 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 19:45:18,820 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1235376040] [2021-12-06 19:45:18,820 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1235376040] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 19:45:18,821 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 19:45:18,821 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-06 19:45:18,821 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [629012196] [2021-12-06 19:45:18,821 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 19:45:18,822 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-06 19:45:18,822 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 19:45:18,822 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-06 19:45:18,822 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-12-06 19:45:18,824 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 68 out of 91 [2021-12-06 19:45:18,824 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 115 places, 85 transitions, 397 flow. Second operand has 7 states, 7 states have (on average 70.14285714285714) internal successors, (491), 7 states have internal predecessors, (491), 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 19:45:18,825 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-06 19:45:18,825 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 68 of 91 [2021-12-06 19:45:18,825 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-06 19:45:19,062 INFO L129 PetriNetUnfolder]: 227/643 cut-off events. [2021-12-06 19:45:19,062 INFO L130 PetriNetUnfolder]: For 3405/3929 co-relation queries the response was YES. [2021-12-06 19:45:19,065 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2794 conditions, 643 events. 227/643 cut-off events. For 3405/3929 co-relation queries the response was YES. Maximal size of possible extension queue 49. Compared 3334 event pairs, 4 based on Foata normal form. 19/643 useless extension candidates. Maximal degree in co-relation 2734. Up to 160 conditions per place. [2021-12-06 19:45:19,069 INFO L132 encePairwiseOnDemand]: 79/91 looper letters, 32 selfloop transitions, 22 changer transitions 43/151 dead transitions. [2021-12-06 19:45:19,069 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 118 places, 151 transitions, 1250 flow [2021-12-06 19:45:19,069 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-12-06 19:45:19,069 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2021-12-06 19:45:19,071 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 968 transitions. [2021-12-06 19:45:19,072 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8182586644125106 [2021-12-06 19:45:19,072 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 968 transitions. [2021-12-06 19:45:19,072 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 968 transitions. [2021-12-06 19:45:19,073 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-06 19:45:19,073 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 968 transitions. [2021-12-06 19:45:19,075 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 74.46153846153847) internal successors, (968), 13 states have internal predecessors, (968), 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 19:45:19,078 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 91.0) internal successors, (1274), 14 states have internal predecessors, (1274), 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 19:45:19,078 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 91.0) internal successors, (1274), 14 states have internal predecessors, (1274), 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 19:45:19,078 INFO L186 Difference]: Start difference. First operand has 115 places, 85 transitions, 397 flow. Second operand 13 states and 968 transitions. [2021-12-06 19:45:19,079 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 118 places, 151 transitions, 1250 flow [2021-12-06 19:45:19,086 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 114 places, 151 transitions, 1172 flow, removed 36 selfloop flow, removed 4 redundant places. [2021-12-06 19:45:19,089 INFO L242 Difference]: Finished difference. Result has 126 places, 97 transitions, 646 flow [2021-12-06 19:45:19,089 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=91, PETRI_DIFFERENCE_MINUEND_FLOW=376, PETRI_DIFFERENCE_MINUEND_PLACES=102, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=85, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=66, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=646, PETRI_PLACES=126, PETRI_TRANSITIONS=97} [2021-12-06 19:45:19,090 INFO L334 CegarLoopForPetriNet]: 83 programPoint places, 43 predicate places. [2021-12-06 19:45:19,090 INFO L470 AbstractCegarLoop]: Abstraction has has 126 places, 97 transitions, 646 flow [2021-12-06 19:45:19,090 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 70.14285714285714) internal successors, (491), 7 states have internal predecessors, (491), 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 19:45:19,090 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-06 19:45:19,090 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] [2021-12-06 19:45:19,090 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-12-06 19:45:19,091 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-12-06 19:45:19,091 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 19:45:19,091 INFO L85 PathProgramCache]: Analyzing trace with hash 314485748, now seen corresponding path program 1 times [2021-12-06 19:45:19,091 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 19:45:19,092 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1016708499] [2021-12-06 19:45:19,092 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:45:19,092 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 19:45:19,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:45:19,190 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 19:45:19,190 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 19:45:19,191 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1016708499] [2021-12-06 19:45:19,191 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1016708499] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 19:45:19,191 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 19:45:19,191 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-06 19:45:19,191 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [868556409] [2021-12-06 19:45:19,191 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 19:45:19,192 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-06 19:45:19,192 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 19:45:19,193 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-06 19:45:19,193 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2021-12-06 19:45:19,194 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 68 out of 91 [2021-12-06 19:45:19,195 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 126 places, 97 transitions, 646 flow. Second operand has 8 states, 8 states have (on average 70.0) internal successors, (560), 8 states have internal predecessors, (560), 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 19:45:19,195 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-06 19:45:19,195 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 68 of 91 [2021-12-06 19:45:19,195 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-06 19:45:19,508 INFO L129 PetriNetUnfolder]: 215/727 cut-off events. [2021-12-06 19:45:19,508 INFO L130 PetriNetUnfolder]: For 5207/7206 co-relation queries the response was YES. [2021-12-06 19:45:19,512 INFO L84 FinitePrefix]: Finished finitePrefix Result has 3412 conditions, 727 events. 215/727 cut-off events. For 5207/7206 co-relation queries the response was YES. Maximal size of possible extension queue 55. Compared 4417 event pairs, 3 based on Foata normal form. 27/731 useless extension candidates. Maximal degree in co-relation 3340. Up to 182 conditions per place. [2021-12-06 19:45:19,515 INFO L132 encePairwiseOnDemand]: 80/91 looper letters, 33 selfloop transitions, 24 changer transitions 101/212 dead transitions. [2021-12-06 19:45:19,515 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 137 places, 212 transitions, 2439 flow [2021-12-06 19:45:19,515 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-12-06 19:45:19,515 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2021-12-06 19:45:19,519 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 1532 transitions. [2021-12-06 19:45:19,520 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8016745159602302 [2021-12-06 19:45:19,520 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 1532 transitions. [2021-12-06 19:45:19,520 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 1532 transitions. [2021-12-06 19:45:19,521 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-06 19:45:19,521 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 1532 transitions. [2021-12-06 19:45:19,524 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 72.95238095238095) internal successors, (1532), 21 states have internal predecessors, (1532), 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 19:45:19,528 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 91.0) internal successors, (2002), 22 states have internal predecessors, (2002), 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 19:45:19,529 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 91.0) internal successors, (2002), 22 states have internal predecessors, (2002), 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 19:45:19,529 INFO L186 Difference]: Start difference. First operand has 126 places, 97 transitions, 646 flow. Second operand 21 states and 1532 transitions. [2021-12-06 19:45:19,529 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 137 places, 212 transitions, 2439 flow [2021-12-06 19:45:19,541 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 124 places, 212 transitions, 2269 flow, removed 85 selfloop flow, removed 13 redundant places. [2021-12-06 19:45:19,545 INFO L242 Difference]: Finished difference. Result has 144 places, 102 transitions, 816 flow [2021-12-06 19:45:19,545 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=91, PETRI_DIFFERENCE_MINUEND_FLOW=584, PETRI_DIFFERENCE_MINUEND_PLACES=104, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=97, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=73, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=816, PETRI_PLACES=144, PETRI_TRANSITIONS=102} [2021-12-06 19:45:19,546 INFO L334 CegarLoopForPetriNet]: 83 programPoint places, 61 predicate places. [2021-12-06 19:45:19,546 INFO L470 AbstractCegarLoop]: Abstraction has has 144 places, 102 transitions, 816 flow [2021-12-06 19:45:19,547 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 70.0) internal successors, (560), 8 states have internal predecessors, (560), 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 19:45:19,547 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-06 19:45:19,547 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] [2021-12-06 19:45:19,547 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-12-06 19:45:19,547 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-12-06 19:45:19,548 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 19:45:19,548 INFO L85 PathProgramCache]: Analyzing trace with hash -443011395, now seen corresponding path program 1 times [2021-12-06 19:45:19,548 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 19:45:19,548 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [675967308] [2021-12-06 19:45:19,548 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:45:19,548 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 19:45:19,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:45:19,644 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 19:45:19,644 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 19:45:19,644 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [675967308] [2021-12-06 19:45:19,644 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [675967308] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 19:45:19,645 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 19:45:19,645 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-06 19:45:19,645 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2015947366] [2021-12-06 19:45:19,645 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 19:45:19,646 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-06 19:45:19,646 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 19:45:19,646 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-06 19:45:19,646 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-12-06 19:45:19,647 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 68 out of 91 [2021-12-06 19:45:19,647 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 144 places, 102 transitions, 816 flow. Second operand has 7 states, 7 states have (on average 70.42857142857143) internal successors, (493), 7 states have internal predecessors, (493), 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 19:45:19,648 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-06 19:45:19,648 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 68 of 91 [2021-12-06 19:45:19,648 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-06 19:45:19,838 INFO L129 PetriNetUnfolder]: 80/425 cut-off events. [2021-12-06 19:45:19,838 INFO L130 PetriNetUnfolder]: For 3636/4161 co-relation queries the response was YES. [2021-12-06 19:45:19,842 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1964 conditions, 425 events. 80/425 cut-off events. For 3636/4161 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 2241 event pairs, 3 based on Foata normal form. 16/427 useless extension candidates. Maximal degree in co-relation 1914. Up to 87 conditions per place. [2021-12-06 19:45:19,845 INFO L132 encePairwiseOnDemand]: 80/91 looper letters, 30 selfloop transitions, 29 changer transitions 22/135 dead transitions. [2021-12-06 19:45:19,846 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 139 places, 135 transitions, 1417 flow [2021-12-06 19:45:19,846 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-12-06 19:45:19,846 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2021-12-06 19:45:19,849 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 945 transitions. [2021-12-06 19:45:19,850 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7988165680473372 [2021-12-06 19:45:19,850 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 945 transitions. [2021-12-06 19:45:19,850 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 945 transitions. [2021-12-06 19:45:19,851 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-06 19:45:19,851 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 945 transitions. [2021-12-06 19:45:19,855 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 72.6923076923077) internal successors, (945), 13 states have internal predecessors, (945), 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 19:45:19,858 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 91.0) internal successors, (1274), 14 states have internal predecessors, (1274), 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 19:45:19,858 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 91.0) internal successors, (1274), 14 states have internal predecessors, (1274), 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 19:45:19,858 INFO L186 Difference]: Start difference. First operand has 144 places, 102 transitions, 816 flow. Second operand 13 states and 945 transitions. [2021-12-06 19:45:19,858 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 139 places, 135 transitions, 1417 flow [2021-12-06 19:45:19,868 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 122 places, 135 transitions, 1238 flow, removed 84 selfloop flow, removed 17 redundant places. [2021-12-06 19:45:19,871 INFO L242 Difference]: Finished difference. Result has 133 places, 101 transitions, 847 flow [2021-12-06 19:45:19,871 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=91, PETRI_DIFFERENCE_MINUEND_FLOW=763, PETRI_DIFFERENCE_MINUEND_PLACES=110, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=102, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=73, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=847, PETRI_PLACES=133, PETRI_TRANSITIONS=101} [2021-12-06 19:45:19,872 INFO L334 CegarLoopForPetriNet]: 83 programPoint places, 50 predicate places. [2021-12-06 19:45:19,872 INFO L470 AbstractCegarLoop]: Abstraction has has 133 places, 101 transitions, 847 flow [2021-12-06 19:45:19,872 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 70.42857142857143) internal successors, (493), 7 states have internal predecessors, (493), 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 19:45:19,872 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-06 19:45:19,872 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] [2021-12-06 19:45:19,873 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-12-06 19:45:19,873 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-12-06 19:45:19,873 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 19:45:19,873 INFO L85 PathProgramCache]: Analyzing trace with hash -665717586, now seen corresponding path program 1 times [2021-12-06 19:45:19,873 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 19:45:19,874 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1006694609] [2021-12-06 19:45:19,874 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:45:19,874 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 19:45:19,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:45:19,937 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 19:45:19,938 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 19:45:19,938 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1006694609] [2021-12-06 19:45:19,938 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1006694609] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 19:45:19,938 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 19:45:19,938 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-06 19:45:19,938 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [236784619] [2021-12-06 19:45:19,938 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 19:45:19,939 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-06 19:45:19,939 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 19:45:19,939 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-06 19:45:19,939 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-06 19:45:19,940 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 74 out of 91 [2021-12-06 19:45:19,940 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 133 places, 101 transitions, 847 flow. Second operand has 6 states, 6 states have (on average 75.66666666666667) internal successors, (454), 6 states have internal predecessors, (454), 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 19:45:19,941 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-06 19:45:19,941 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 74 of 91 [2021-12-06 19:45:19,941 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-06 19:45:20,204 INFO L129 PetriNetUnfolder]: 665/1701 cut-off events. [2021-12-06 19:45:20,205 INFO L130 PetriNetUnfolder]: For 3128/3617 co-relation queries the response was YES. [2021-12-06 19:45:20,217 INFO L84 FinitePrefix]: Finished finitePrefix Result has 4079 conditions, 1701 events. 665/1701 cut-off events. For 3128/3617 co-relation queries the response was YES. Maximal size of possible extension queue 239. Compared 14099 event pairs, 14 based on Foata normal form. 37/1576 useless extension candidates. Maximal degree in co-relation 4020. Up to 469 conditions per place. [2021-12-06 19:45:20,226 INFO L132 encePairwiseOnDemand]: 81/91 looper letters, 29 selfloop transitions, 17 changer transitions 0/133 dead transitions. [2021-12-06 19:45:20,226 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 133 places, 133 transitions, 1007 flow [2021-12-06 19:45:20,226 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-12-06 19:45:20,226 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2021-12-06 19:45:20,228 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 788 transitions. [2021-12-06 19:45:20,229 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.865934065934066 [2021-12-06 19:45:20,229 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 788 transitions. [2021-12-06 19:45:20,229 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 788 transitions. [2021-12-06 19:45:20,230 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-06 19:45:20,230 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 788 transitions. [2021-12-06 19:45:20,232 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 78.8) internal successors, (788), 10 states have internal predecessors, (788), 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 19:45:20,235 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 91.0) internal successors, (1001), 11 states have internal predecessors, (1001), 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 19:45:20,235 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 91.0) internal successors, (1001), 11 states have internal predecessors, (1001), 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 19:45:20,236 INFO L186 Difference]: Start difference. First operand has 133 places, 101 transitions, 847 flow. Second operand 10 states and 788 transitions. [2021-12-06 19:45:20,236 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 133 places, 133 transitions, 1007 flow [2021-12-06 19:45:20,246 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 121 places, 133 transitions, 975 flow, removed 16 selfloop flow, removed 12 redundant places. [2021-12-06 19:45:20,248 INFO L242 Difference]: Finished difference. Result has 127 places, 116 transitions, 935 flow [2021-12-06 19:45:20,248 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=91, PETRI_DIFFERENCE_MINUEND_FLOW=815, PETRI_DIFFERENCE_MINUEND_PLACES=112, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=101, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=92, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=935, PETRI_PLACES=127, PETRI_TRANSITIONS=116} [2021-12-06 19:45:20,249 INFO L334 CegarLoopForPetriNet]: 83 programPoint places, 44 predicate places. [2021-12-06 19:45:20,249 INFO L470 AbstractCegarLoop]: Abstraction has has 127 places, 116 transitions, 935 flow [2021-12-06 19:45:20,249 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 75.66666666666667) internal successors, (454), 6 states have internal predecessors, (454), 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 19:45:20,249 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-06 19:45:20,249 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 19:45:20,249 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-12-06 19:45:20,250 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-12-06 19:45:20,250 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 19:45:20,250 INFO L85 PathProgramCache]: Analyzing trace with hash -910524821, now seen corresponding path program 1 times [2021-12-06 19:45:20,250 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 19:45:20,250 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1417011878] [2021-12-06 19:45:20,250 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:45:20,250 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 19:45:20,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:45:20,330 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 19:45:20,330 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 19:45:20,330 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1417011878] [2021-12-06 19:45:20,330 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1417011878] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 19:45:20,330 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 19:45:20,330 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-06 19:45:20,330 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1636645522] [2021-12-06 19:45:20,330 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 19:45:20,331 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-06 19:45:20,331 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 19:45:20,331 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-06 19:45:20,331 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-12-06 19:45:20,332 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 74 out of 91 [2021-12-06 19:45:20,332 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 127 places, 116 transitions, 935 flow. Second operand has 7 states, 7 states have (on average 75.57142857142857) internal successors, (529), 7 states have internal predecessors, (529), 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 19:45:20,332 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-06 19:45:20,332 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 74 of 91 [2021-12-06 19:45:20,333 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-06 19:45:20,643 INFO L129 PetriNetUnfolder]: 654/1715 cut-off events. [2021-12-06 19:45:20,643 INFO L130 PetriNetUnfolder]: For 5685/6516 co-relation queries the response was YES. [2021-12-06 19:45:20,652 INFO L84 FinitePrefix]: Finished finitePrefix Result has 6441 conditions, 1715 events. 654/1715 cut-off events. For 5685/6516 co-relation queries the response was YES. Maximal size of possible extension queue 255. Compared 14764 event pairs, 0 based on Foata normal form. 182/1782 useless extension candidates. Maximal degree in co-relation 6369. Up to 669 conditions per place. [2021-12-06 19:45:20,658 INFO L132 encePairwiseOnDemand]: 81/91 looper letters, 26 selfloop transitions, 32 changer transitions 9/154 dead transitions. [2021-12-06 19:45:20,658 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 139 places, 154 transitions, 1305 flow [2021-12-06 19:45:20,658 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-12-06 19:45:20,658 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2021-12-06 19:45:20,660 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1025 transitions. [2021-12-06 19:45:20,661 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8664412510566357 [2021-12-06 19:45:20,661 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 1025 transitions. [2021-12-06 19:45:20,661 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 1025 transitions. [2021-12-06 19:45:20,661 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-06 19:45:20,662 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 1025 transitions. [2021-12-06 19:45:20,664 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 78.84615384615384) internal successors, (1025), 13 states have internal predecessors, (1025), 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 19:45:20,666 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 91.0) internal successors, (1274), 14 states have internal predecessors, (1274), 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 19:45:20,666 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 91.0) internal successors, (1274), 14 states have internal predecessors, (1274), 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 19:45:20,666 INFO L186 Difference]: Start difference. First operand has 127 places, 116 transitions, 935 flow. Second operand 13 states and 1025 transitions. [2021-12-06 19:45:20,667 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 139 places, 154 transitions, 1305 flow [2021-12-06 19:45:20,679 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 135 places, 154 transitions, 1255 flow, removed 24 selfloop flow, removed 4 redundant places. [2021-12-06 19:45:20,681 INFO L242 Difference]: Finished difference. Result has 139 places, 136 transitions, 1128 flow [2021-12-06 19:45:20,682 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=91, PETRI_DIFFERENCE_MINUEND_FLOW=885, PETRI_DIFFERENCE_MINUEND_PLACES=123, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=116, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=94, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=1128, PETRI_PLACES=139, PETRI_TRANSITIONS=136} [2021-12-06 19:45:20,682 INFO L334 CegarLoopForPetriNet]: 83 programPoint places, 56 predicate places. [2021-12-06 19:45:20,682 INFO L470 AbstractCegarLoop]: Abstraction has has 139 places, 136 transitions, 1128 flow [2021-12-06 19:45:20,683 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 75.57142857142857) internal successors, (529), 7 states have internal predecessors, (529), 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 19:45:20,683 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-06 19:45:20,683 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 19:45:20,683 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-12-06 19:45:20,683 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-12-06 19:45:20,683 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 19:45:20,684 INFO L85 PathProgramCache]: Analyzing trace with hash 616314994, now seen corresponding path program 1 times [2021-12-06 19:45:20,684 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 19:45:20,684 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1291113653] [2021-12-06 19:45:20,684 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:45:20,684 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 19:45:20,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:45:20,760 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 19:45:20,760 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 19:45:20,760 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1291113653] [2021-12-06 19:45:20,761 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1291113653] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 19:45:20,761 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 19:45:20,761 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-06 19:45:20,761 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1073095105] [2021-12-06 19:45:20,761 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 19:45:20,762 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-06 19:45:20,762 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 19:45:20,762 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-06 19:45:20,762 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-12-06 19:45:20,763 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 74 out of 91 [2021-12-06 19:45:20,764 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 139 places, 136 transitions, 1128 flow. Second operand has 8 states, 8 states have (on average 75.5) internal successors, (604), 8 states have internal predecessors, (604), 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 19:45:20,764 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-06 19:45:20,765 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 74 of 91 [2021-12-06 19:45:20,765 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-06 19:45:21,125 INFO L129 PetriNetUnfolder]: 530/1540 cut-off events. [2021-12-06 19:45:21,126 INFO L130 PetriNetUnfolder]: For 7303/8181 co-relation queries the response was YES. [2021-12-06 19:45:21,136 INFO L84 FinitePrefix]: Finished finitePrefix Result has 6825 conditions, 1540 events. 530/1540 cut-off events. For 7303/8181 co-relation queries the response was YES. Maximal size of possible extension queue 257. Compared 13875 event pairs, 0 based on Foata normal form. 180/1605 useless extension candidates. Maximal degree in co-relation 6750. Up to 532 conditions per place. [2021-12-06 19:45:21,140 INFO L132 encePairwiseOnDemand]: 81/91 looper letters, 14 selfloop transitions, 20 changer transitions 63/165 dead transitions. [2021-12-06 19:45:21,140 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 154 places, 165 transitions, 1470 flow [2021-12-06 19:45:21,141 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-12-06 19:45:21,141 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2021-12-06 19:45:21,144 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 1246 transitions. [2021-12-06 19:45:21,145 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8557692307692307 [2021-12-06 19:45:21,145 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 1246 transitions. [2021-12-06 19:45:21,145 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 1246 transitions. [2021-12-06 19:45:21,146 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-06 19:45:21,146 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 1246 transitions. [2021-12-06 19:45:21,150 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 77.875) internal successors, (1246), 16 states have internal predecessors, (1246), 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 19:45:21,154 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 91.0) internal successors, (1547), 17 states have internal predecessors, (1547), 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 19:45:21,154 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 91.0) internal successors, (1547), 17 states have internal predecessors, (1547), 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 19:45:21,155 INFO L186 Difference]: Start difference. First operand has 139 places, 136 transitions, 1128 flow. Second operand 16 states and 1246 transitions. [2021-12-06 19:45:21,155 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 154 places, 165 transitions, 1470 flow [2021-12-06 19:45:21,199 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 143 places, 165 transitions, 1282 flow, removed 76 selfloop flow, removed 11 redundant places. [2021-12-06 19:45:21,201 INFO L242 Difference]: Finished difference. Result has 149 places, 99 transitions, 596 flow [2021-12-06 19:45:21,201 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=91, PETRI_DIFFERENCE_MINUEND_FLOW=972, PETRI_DIFFERENCE_MINUEND_PLACES=128, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=136, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=116, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=596, PETRI_PLACES=149, PETRI_TRANSITIONS=99} [2021-12-06 19:45:21,201 INFO L334 CegarLoopForPetriNet]: 83 programPoint places, 66 predicate places. [2021-12-06 19:45:21,202 INFO L470 AbstractCegarLoop]: Abstraction has has 149 places, 99 transitions, 596 flow [2021-12-06 19:45:21,202 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 75.5) internal successors, (604), 8 states have internal predecessors, (604), 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 19:45:21,202 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-06 19:45:21,202 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 19:45:21,202 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-12-06 19:45:21,202 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-12-06 19:45:21,203 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 19:45:21,203 INFO L85 PathProgramCache]: Analyzing trace with hash -939123575, now seen corresponding path program 1 times [2021-12-06 19:45:21,203 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 19:45:21,203 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [750392199] [2021-12-06 19:45:21,203 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:45:21,203 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 19:45:21,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:45:21,263 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 19:45:21,263 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 19:45:21,264 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [750392199] [2021-12-06 19:45:21,264 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [750392199] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 19:45:21,264 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 19:45:21,264 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-06 19:45:21,264 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [174339224] [2021-12-06 19:45:21,264 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 19:45:21,265 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-06 19:45:21,265 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 19:45:21,265 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-06 19:45:21,265 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-06 19:45:21,266 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 72 out of 91 [2021-12-06 19:45:21,267 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 149 places, 99 transitions, 596 flow. Second operand has 7 states, 7 states have (on average 74.14285714285714) internal successors, (519), 7 states have internal predecessors, (519), 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 19:45:21,267 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-06 19:45:21,267 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 72 of 91 [2021-12-06 19:45:21,267 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-06 19:45:21,350 INFO L129 PetriNetUnfolder]: 29/247 cut-off events. [2021-12-06 19:45:21,350 INFO L130 PetriNetUnfolder]: For 512/528 co-relation queries the response was YES. [2021-12-06 19:45:21,351 INFO L84 FinitePrefix]: Finished finitePrefix Result has 705 conditions, 247 events. 29/247 cut-off events. For 512/528 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 1255 event pairs, 0 based on Foata normal form. 1/239 useless extension candidates. Maximal degree in co-relation 656. Up to 39 conditions per place. [2021-12-06 19:45:21,351 INFO L132 encePairwiseOnDemand]: 84/91 looper letters, 0 selfloop transitions, 0 changer transitions 98/98 dead transitions. [2021-12-06 19:45:21,351 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 145 places, 98 transitions, 638 flow [2021-12-06 19:45:21,352 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-06 19:45:21,352 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-12-06 19:45:21,352 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 521 transitions. [2021-12-06 19:45:21,352 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8178963893249608 [2021-12-06 19:45:21,353 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 521 transitions. [2021-12-06 19:45:21,353 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 521 transitions. [2021-12-06 19:45:21,353 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-06 19:45:21,353 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 521 transitions. [2021-12-06 19:45:21,354 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 74.42857142857143) internal successors, (521), 7 states have internal predecessors, (521), 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 19:45:21,355 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 91.0) internal successors, (728), 8 states have internal predecessors, (728), 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 19:45:21,355 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 91.0) internal successors, (728), 8 states have internal predecessors, (728), 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 19:45:21,355 INFO L186 Difference]: Start difference. First operand has 149 places, 99 transitions, 596 flow. Second operand 7 states and 521 transitions. [2021-12-06 19:45:21,355 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 145 places, 98 transitions, 638 flow [2021-12-06 19:45:21,358 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 123 places, 98 transitions, 516 flow, removed 20 selfloop flow, removed 22 redundant places. [2021-12-06 19:45:21,359 INFO L242 Difference]: Finished difference. Result has 123 places, 0 transitions, 0 flow [2021-12-06 19:45:21,359 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=91, PETRI_DIFFERENCE_MINUEND_FLOW=470, PETRI_DIFFERENCE_MINUEND_PLACES=117, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=97, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=97, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=0, PETRI_PLACES=123, PETRI_TRANSITIONS=0} [2021-12-06 19:45:21,360 INFO L334 CegarLoopForPetriNet]: 83 programPoint places, 40 predicate places. [2021-12-06 19:45:21,360 INFO L470 AbstractCegarLoop]: Abstraction has has 123 places, 0 transitions, 0 flow [2021-12-06 19:45:21,360 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 74.14285714285714) internal successors, (519), 7 states have internal predecessors, (519), 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 19:45:21,362 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (3 of 4 remaining) [2021-12-06 19:45:21,362 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATION (2 of 4 remaining) [2021-12-06 19:45:21,362 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATION (1 of 4 remaining) [2021-12-06 19:45:21,362 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATION (0 of 4 remaining) [2021-12-06 19:45:21,363 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-12-06 19:45:21,365 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 19:45:21,367 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2021-12-06 19:45:21,367 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-12-06 19:45:21,370 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 06.12 07:45:21 BasicIcfg [2021-12-06 19:45:21,370 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-12-06 19:45:21,370 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-12-06 19:45:21,370 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-12-06 19:45:21,370 INFO L275 PluginConnector]: Witness Printer initialized [2021-12-06 19:45:21,371 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.12 07:45:17" (3/4) ... [2021-12-06 19:45:21,373 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-12-06 19:45:21,378 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P0 [2021-12-06 19:45:21,378 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P1 [2021-12-06 19:45:21,378 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P2 [2021-12-06 19:45:21,381 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 17 nodes and edges [2021-12-06 19:45:21,382 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2021-12-06 19:45:21,382 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2021-12-06 19:45:21,382 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-12-06 19:45:21,406 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c8eb6be-9e97-40b0-9237-5dbbf07260ee/bin/uautomizer-DrprNOufMa/witness.graphml [2021-12-06 19:45:21,406 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-12-06 19:45:21,406 INFO L158 Benchmark]: Toolchain (without parser) took 4691.06ms. Allocated memory was 94.4MB in the beginning and 163.6MB in the end (delta: 69.2MB). Free memory was 54.9MB in the beginning and 83.3MB in the end (delta: -28.4MB). Peak memory consumption was 38.0MB. Max. memory is 16.1GB. [2021-12-06 19:45:21,407 INFO L158 Benchmark]: CDTParser took 0.18ms. Allocated memory is still 94.4MB. Free memory was 72.7MB in the beginning and 72.6MB in the end (delta: 117.7kB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-06 19:45:21,407 INFO L158 Benchmark]: CACSL2BoogieTranslator took 341.78ms. Allocated memory is still 94.4MB. Free memory was 54.7MB in the beginning and 61.3MB in the end (delta: -6.6MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2021-12-06 19:45:21,407 INFO L158 Benchmark]: Boogie Procedure Inliner took 31.25ms. Allocated memory is still 94.4MB. Free memory was 61.3MB in the beginning and 59.4MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-12-06 19:45:21,408 INFO L158 Benchmark]: Boogie Preprocessor took 18.75ms. Allocated memory is still 94.4MB. Free memory was 59.4MB in the beginning and 58.1MB in the end (delta: 1.2MB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-06 19:45:21,408 INFO L158 Benchmark]: RCFGBuilder took 250.08ms. Allocated memory is still 94.4MB. Free memory was 57.7MB in the beginning and 46.0MB in the end (delta: 11.7MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2021-12-06 19:45:21,408 INFO L158 Benchmark]: TraceAbstraction took 4008.27ms. Allocated memory was 94.4MB in the beginning and 163.6MB in the end (delta: 69.2MB). Free memory was 45.2MB in the beginning and 86.2MB in the end (delta: -41.0MB). Peak memory consumption was 50.3MB. Max. memory is 16.1GB. [2021-12-06 19:45:21,409 INFO L158 Benchmark]: Witness Printer took 35.59ms. Allocated memory is still 163.6MB. Free memory was 86.2MB in the beginning and 83.3MB in the end (delta: 2.9MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-12-06 19:45:21,410 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18ms. Allocated memory is still 94.4MB. Free memory was 72.7MB in the beginning and 72.6MB in the end (delta: 117.7kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 341.78ms. Allocated memory is still 94.4MB. Free memory was 54.7MB in the beginning and 61.3MB in the end (delta: -6.6MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 31.25ms. Allocated memory is still 94.4MB. Free memory was 61.3MB in the beginning and 59.4MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 18.75ms. Allocated memory is still 94.4MB. Free memory was 59.4MB in the beginning and 58.1MB in the end (delta: 1.2MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 250.08ms. Allocated memory is still 94.4MB. Free memory was 57.7MB in the beginning and 46.0MB in the end (delta: 11.7MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * TraceAbstraction took 4008.27ms. Allocated memory was 94.4MB in the beginning and 163.6MB in the end (delta: 69.2MB). Free memory was 45.2MB in the beginning and 86.2MB in the end (delta: -41.0MB). Peak memory consumption was 50.3MB. Max. memory is 16.1GB. * Witness Printer took 35.59ms. Allocated memory is still 163.6MB. Free memory was 86.2MB in the beginning and 83.3MB in the end (delta: 2.9MB). Peak memory consumption was 2.1MB. 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 - PositiveResult [Line: 18]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 7 procedures, 114 locations, 4 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: 3.9s, OverallIterations: 9, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 2.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 473 SdHoareTripleChecker+Valid, 0.4s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 473 mSDsluCounter, 654 SdHoareTripleChecker+Invalid, 0.4s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 635 mSDsCounter, 120 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 671 IncrementalHoareTripleChecker+Invalid, 791 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 120 mSolverCounterUnsat, 151 mSDtfsCounter, 671 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 139 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 121 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 270 ImplicationChecksByTransitivity, 0.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1128occurred in iteration=7, InterpolantAutomatonStates: 119, 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, 0.1s SatisfiabilityAnalysisTime, 0.7s InterpolantComputationTime, 542 NumberOfCodeBlocks, 542 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 533 ConstructedInterpolants, 0 QuantifiedInterpolants, 2371 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 9 InterpolantComputations, 9 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2021-12-06 19:45:21,438 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c8eb6be-9e97-40b0-9237-5dbbf07260ee/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 Result: TRUE