./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/pthread-wmm/thin002_pso.oepc_pso.opt_tso.oepc_tso.opt.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version b2eff8ba Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6474bd7-7da5-4f7d-84a7-3ef851d9a8f6/bin/uautomizer-UnR33cPsHg/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6474bd7-7da5-4f7d-84a7-3ef851d9a8f6/bin/uautomizer-UnR33cPsHg/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6474bd7-7da5-4f7d-84a7-3ef851d9a8f6/bin/uautomizer-UnR33cPsHg/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6474bd7-7da5-4f7d-84a7-3ef851d9a8f6/bin/uautomizer-UnR33cPsHg/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread-wmm/thin002_pso.oepc_pso.opt_tso.oepc_tso.opt.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6474bd7-7da5-4f7d-84a7-3ef851d9a8f6/bin/uautomizer-UnR33cPsHg/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6474bd7-7da5-4f7d-84a7-3ef851d9a8f6/bin/uautomizer-UnR33cPsHg --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 33fa46fe030c661ecf8ddae0fe7d2b7598ab4fcf90a09fe31211d00189cd239f ................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.1-dev-b2eff8b [2021-10-28 08:59:02,616 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-28 08:59:02,618 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-28 08:59:02,657 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-28 08:59:02,658 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-28 08:59:02,660 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-28 08:59:02,662 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-28 08:59:02,664 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-28 08:59:02,666 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-28 08:59:02,667 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-28 08:59:02,669 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-28 08:59:02,670 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-28 08:59:02,671 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-28 08:59:02,672 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-28 08:59:02,674 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-28 08:59:02,676 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-28 08:59:02,677 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-28 08:59:02,679 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-28 08:59:02,681 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-28 08:59:02,684 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-28 08:59:02,686 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-28 08:59:02,688 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-28 08:59:02,690 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-28 08:59:02,691 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-28 08:59:02,695 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-28 08:59:02,696 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-28 08:59:02,696 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-28 08:59:02,697 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-28 08:59:02,698 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-28 08:59:02,699 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-28 08:59:02,700 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-28 08:59:02,701 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-28 08:59:02,702 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-28 08:59:02,703 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-28 08:59:02,704 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-28 08:59:02,705 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-28 08:59:02,706 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-28 08:59:02,706 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-28 08:59:02,707 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-28 08:59:02,708 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-28 08:59:02,709 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-28 08:59:02,710 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6474bd7-7da5-4f7d-84a7-3ef851d9a8f6/bin/uautomizer-UnR33cPsHg/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-10-28 08:59:02,735 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-28 08:59:02,736 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-28 08:59:02,737 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-28 08:59:02,737 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-28 08:59:02,738 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-28 08:59:02,739 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-28 08:59:02,739 INFO L138 SettingsManager]: * Use SBE=true [2021-10-28 08:59:02,740 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-28 08:59:02,740 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-28 08:59:02,741 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-28 08:59:02,741 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-28 08:59:02,742 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-28 08:59:02,742 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-28 08:59:02,742 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-28 08:59:02,743 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-28 08:59:02,743 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-28 08:59:02,747 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-28 08:59:02,748 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-28 08:59:02,748 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-28 08:59:02,749 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-28 08:59:02,749 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-28 08:59:02,749 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-28 08:59:02,750 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-28 08:59:02,750 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-28 08:59:02,751 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-28 08:59:02,751 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-28 08:59:02,751 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-10-28 08:59:02,752 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-28 08:59:02,752 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-10-28 08:59:02,753 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-10-28 08:59:02,754 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-28 08:59:02,754 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-28 08:59:02,755 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_f6474bd7-7da5-4f7d-84a7-3ef851d9a8f6/bin/uautomizer-UnR33cPsHg/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6474bd7-7da5-4f7d-84a7-3ef851d9a8f6/bin/uautomizer-UnR33cPsHg Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 33fa46fe030c661ecf8ddae0fe7d2b7598ab4fcf90a09fe31211d00189cd239f [2021-10-28 08:59:03,069 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-28 08:59:03,104 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-28 08:59:03,107 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-28 08:59:03,108 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-28 08:59:03,109 INFO L275 PluginConnector]: CDTParser initialized [2021-10-28 08:59:03,110 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6474bd7-7da5-4f7d-84a7-3ef851d9a8f6/bin/uautomizer-UnR33cPsHg/../../sv-benchmarks/c/pthread-wmm/thin002_pso.oepc_pso.opt_tso.oepc_tso.opt.i [2021-10-28 08:59:03,186 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6474bd7-7da5-4f7d-84a7-3ef851d9a8f6/bin/uautomizer-UnR33cPsHg/data/9537fa1a6/8f0c1ed8c510439b88d97704de1b37ed/FLAG7ba5bdd7e [2021-10-28 08:59:03,697 INFO L306 CDTParser]: Found 1 translation units. [2021-10-28 08:59:03,698 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6474bd7-7da5-4f7d-84a7-3ef851d9a8f6/sv-benchmarks/c/pthread-wmm/thin002_pso.oepc_pso.opt_tso.oepc_tso.opt.i [2021-10-28 08:59:03,716 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6474bd7-7da5-4f7d-84a7-3ef851d9a8f6/bin/uautomizer-UnR33cPsHg/data/9537fa1a6/8f0c1ed8c510439b88d97704de1b37ed/FLAG7ba5bdd7e [2021-10-28 08:59:04,036 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6474bd7-7da5-4f7d-84a7-3ef851d9a8f6/bin/uautomizer-UnR33cPsHg/data/9537fa1a6/8f0c1ed8c510439b88d97704de1b37ed [2021-10-28 08:59:04,038 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-28 08:59:04,040 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-28 08:59:04,047 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-28 08:59:04,047 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-28 08:59:04,051 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-28 08:59:04,052 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 08:59:04" (1/1) ... [2021-10-28 08:59:04,053 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2bec9752 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 08:59:04, skipping insertion in model container [2021-10-28 08:59:04,053 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 08:59:04" (1/1) ... [2021-10-28 08:59:04,061 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-28 08:59:04,112 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-28 08:59:04,305 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6474bd7-7da5-4f7d-84a7-3ef851d9a8f6/sv-benchmarks/c/pthread-wmm/thin002_pso.oepc_pso.opt_tso.oepc_tso.opt.i[975,988] [2021-10-28 08:59:04,474 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-28 08:59:04,483 INFO L203 MainTranslator]: Completed pre-run [2021-10-28 08:59:04,499 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6474bd7-7da5-4f7d-84a7-3ef851d9a8f6/sv-benchmarks/c/pthread-wmm/thin002_pso.oepc_pso.opt_tso.oepc_tso.opt.i[975,988] [2021-10-28 08:59:04,538 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-28 08:59:04,588 INFO L208 MainTranslator]: Completed translation [2021-10-28 08:59:04,588 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 08:59:04 WrapperNode [2021-10-28 08:59:04,589 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-28 08:59:04,590 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-28 08:59:04,590 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-28 08:59:04,590 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-28 08:59:04,599 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 08:59:04" (1/1) ... [2021-10-28 08:59:04,615 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 08:59:04" (1/1) ... [2021-10-28 08:59:04,638 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-28 08:59:04,639 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-28 08:59:04,640 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-28 08:59:04,640 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-28 08:59:04,649 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 08:59:04" (1/1) ... [2021-10-28 08:59:04,649 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 08:59:04" (1/1) ... [2021-10-28 08:59:04,653 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 08:59:04" (1/1) ... [2021-10-28 08:59:04,653 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 08:59:04" (1/1) ... [2021-10-28 08:59:04,659 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 08:59:04" (1/1) ... [2021-10-28 08:59:04,661 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 08:59:04" (1/1) ... [2021-10-28 08:59:04,664 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 08:59:04" (1/1) ... [2021-10-28 08:59:04,667 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-28 08:59:04,668 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-28 08:59:04,668 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-28 08:59:04,669 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-28 08:59:04,670 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 08:59:04" (1/1) ... [2021-10-28 08:59:04,677 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-28 08:59:04,689 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6474bd7-7da5-4f7d-84a7-3ef851d9a8f6/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 08:59:04,705 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6474bd7-7da5-4f7d-84a7-3ef851d9a8f6/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-28 08:59:04,736 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6474bd7-7da5-4f7d-84a7-3ef851d9a8f6/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-28 08:59:04,756 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-10-28 08:59:04,757 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-10-28 08:59:04,757 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-28 08:59:04,757 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-28 08:59:04,757 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2021-10-28 08:59:04,757 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2021-10-28 08:59:04,758 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2021-10-28 08:59:04,758 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2021-10-28 08:59:04,758 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2021-10-28 08:59:04,758 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2021-10-28 08:59:04,758 INFO L130 BoogieDeclarations]: Found specification of procedure P3 [2021-10-28 08:59:04,758 INFO L138 BoogieDeclarations]: Found implementation of procedure P3 [2021-10-28 08:59:04,759 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-28 08:59:04,759 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-10-28 08:59:04,759 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-28 08:59:04,759 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-28 08:59:04,761 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-10-28 08:59:05,217 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-28 08:59:05,219 INFO L299 CfgBuilder]: Removed 8 assume(true) statements. [2021-10-28 08:59:05,223 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 08:59:05 BoogieIcfgContainer [2021-10-28 08:59:05,223 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-28 08:59:05,227 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-28 08:59:05,227 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-28 08:59:05,230 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-28 08:59:05,231 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.10 08:59:04" (1/3) ... [2021-10-28 08:59:05,232 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1a7b5dc2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 08:59:05, skipping insertion in model container [2021-10-28 08:59:05,233 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 08:59:04" (2/3) ... [2021-10-28 08:59:05,233 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1a7b5dc2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 08:59:05, skipping insertion in model container [2021-10-28 08:59:05,234 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 08:59:05" (3/3) ... [2021-10-28 08:59:05,235 INFO L111 eAbstractionObserver]: Analyzing ICFG thin002_pso.oepc_pso.opt_tso.oepc_tso.opt.i [2021-10-28 08:59:05,245 WARN L149 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-10-28 08:59:05,245 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-28 08:59:05,246 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-10-28 08:59:05,246 INFO L513 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-10-28 08:59:05,312 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 08:59:05,312 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 08:59:05,312 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 08:59:05,313 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 08:59:05,313 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 08:59:05,313 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 08:59:05,313 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 08:59:05,314 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 08:59:05,314 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 08:59:05,314 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 08:59:05,314 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 08:59:05,315 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 08:59:05,315 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 08:59:05,315 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 08:59:05,315 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 08:59:05,316 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 08:59:05,316 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 08:59:05,316 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 08:59:05,316 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 08:59:05,316 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 08:59:05,317 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 08:59:05,317 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 08:59:05,317 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 08:59:05,317 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 08:59:05,318 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork3_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 08:59:05,318 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork3_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 08:59:05,318 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork3_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 08:59:05,318 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork3_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 08:59:05,319 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork3_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 08:59:05,319 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork3_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 08:59:05,332 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork3_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 08:59:05,332 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork3_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 08:59:05,333 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork3_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 08:59:05,333 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork3_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 08:59:05,333 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork3_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 08:59:05,333 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork3_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 08:59:05,334 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 08:59:05,334 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 08:59:05,334 WARN L313 ript$VariableManager]: TermVariabe P3Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 08:59:05,334 WARN L313 ript$VariableManager]: TermVariabe P3Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 08:59:05,334 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 08:59:05,335 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 08:59:05,335 WARN L313 ript$VariableManager]: TermVariabe P3Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 08:59:05,335 WARN L313 ript$VariableManager]: TermVariabe P3Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 08:59:05,335 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 08:59:05,336 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 08:59:05,336 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 08:59:05,336 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 08:59:05,339 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 08:59:05,339 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 08:59:05,340 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 08:59:05,340 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 08:59:05,344 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 08:59:05,345 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 08:59:05,345 WARN L313 ript$VariableManager]: TermVariabe P3Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 08:59:05,345 WARN L313 ript$VariableManager]: TermVariabe P3Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 08:59:05,347 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 08:59:05,350 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 08:59:05,350 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 08:59:05,350 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 08:59:05,352 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork3_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 08:59:05,354 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork3_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 08:59:05,354 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork3_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 08:59:05,354 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork3_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 08:59:05,357 INFO L148 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-10-28 08:59:05,423 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-28 08:59:05,432 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 [2021-10-28 08:59:05,433 INFO L340 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2021-10-28 08:59:05,448 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 114 places, 103 transitions, 226 flow [2021-10-28 08:59:05,529 INFO L129 PetriNetUnfolder]: 2/99 cut-off events. [2021-10-28 08:59:05,529 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-10-28 08:59:05,546 INFO L84 FinitePrefix]: Finished finitePrefix Result has 112 conditions, 99 events. 2/99 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 58 event pairs, 0 based on Foata normal form. 0/96 useless extension candidates. Maximal degree in co-relation 80. Up to 2 conditions per place. [2021-10-28 08:59:05,546 INFO L82 GeneralOperation]: Start removeDead. Operand has 114 places, 103 transitions, 226 flow [2021-10-28 08:59:05,551 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 97 places, 85 transitions, 182 flow [2021-10-28 08:59:05,578 INFO L129 PetriNetUnfolder]: 1/84 cut-off events. [2021-10-28 08:59:05,578 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-10-28 08:59:05,578 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-28 08:59:05,579 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] [2021-10-28 08:59:05,580 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-10-28 08:59:05,585 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 08:59:05,585 INFO L85 PathProgramCache]: Analyzing trace with hash -1205527084, now seen corresponding path program 1 times [2021-10-28 08:59:05,595 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 08:59:05,595 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [905822407] [2021-10-28 08:59:05,596 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 08:59:05,597 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 08:59:05,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:59:06,201 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 08:59:06,202 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 08:59:06,202 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [905822407] [2021-10-28 08:59:06,203 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [905822407] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 08:59:06,203 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 08:59:06,204 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-10-28 08:59:06,205 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [450017944] [2021-10-28 08:59:06,216 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-28 08:59:06,216 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 08:59:06,229 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-28 08:59:06,232 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-10-28 08:59:06,238 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 85 out of 103 [2021-10-28 08:59:06,243 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 97 places, 85 transitions, 182 flow. Second operand has 7 states, 7 states have (on average 86.42857142857143) internal successors, (605), 7 states have internal predecessors, (605), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 08:59:06,244 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-28 08:59:06,245 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 85 of 103 [2021-10-28 08:59:06,247 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-28 08:59:06,693 INFO L129 PetriNetUnfolder]: 197/490 cut-off events. [2021-10-28 08:59:06,693 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-10-28 08:59:06,697 INFO L84 FinitePrefix]: Finished finitePrefix Result has 825 conditions, 490 events. 197/490 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 41. Compared 2268 event pairs, 25 based on Foata normal form. 19/485 useless extension candidates. Maximal degree in co-relation 787. Up to 121 conditions per place. [2021-10-28 08:59:06,702 INFO L132 encePairwiseOnDemand]: 95/103 looper letters, 14 selfloop transitions, 3 changer transitions 28/115 dead transitions. [2021-10-28 08:59:06,703 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 106 places, 115 transitions, 332 flow [2021-10-28 08:59:06,717 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-10-28 08:59:06,720 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2021-10-28 08:59:06,735 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 899 transitions. [2021-10-28 08:59:06,740 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8728155339805825 [2021-10-28 08:59:06,741 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 899 transitions. [2021-10-28 08:59:06,742 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 899 transitions. [2021-10-28 08:59:06,752 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-28 08:59:06,754 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 899 transitions. [2021-10-28 08:59:06,761 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 89.9) internal successors, (899), 10 states have internal predecessors, (899), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 08:59:06,772 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 103.0) internal successors, (1133), 11 states have internal predecessors, (1133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 08:59:06,773 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 103.0) internal successors, (1133), 11 states have internal predecessors, (1133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 08:59:06,775 INFO L186 Difference]: Start difference. First operand has 97 places, 85 transitions, 182 flow. Second operand 10 states and 899 transitions. [2021-10-28 08:59:06,776 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 106 places, 115 transitions, 332 flow [2021-10-28 08:59:06,780 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 102 places, 115 transitions, 328 flow, removed 0 selfloop flow, removed 4 redundant places. [2021-10-28 08:59:06,791 INFO L242 Difference]: Finished difference. Result has 109 places, 84 transitions, 198 flow [2021-10-28 08:59:06,793 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=103, PETRI_DIFFERENCE_MINUEND_FLOW=176, PETRI_DIFFERENCE_MINUEND_PLACES=93, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=84, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=81, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=198, PETRI_PLACES=109, PETRI_TRANSITIONS=84} [2021-10-28 08:59:06,794 INFO L334 CegarLoopForPetriNet]: 97 programPoint places, 12 predicate places. [2021-10-28 08:59:06,794 INFO L470 AbstractCegarLoop]: Abstraction has has 109 places, 84 transitions, 198 flow [2021-10-28 08:59:06,795 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 86.42857142857143) internal successors, (605), 7 states have internal predecessors, (605), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 08:59:06,795 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-28 08:59:06,796 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] [2021-10-28 08:59:06,796 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-28 08:59:06,796 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-10-28 08:59:06,797 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 08:59:06,797 INFO L85 PathProgramCache]: Analyzing trace with hash -2117230955, now seen corresponding path program 1 times [2021-10-28 08:59:06,797 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 08:59:06,798 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [960089844] [2021-10-28 08:59:06,798 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 08:59:06,798 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 08:59:06,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:59:07,083 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 08:59:07,084 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 08:59:07,084 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [960089844] [2021-10-28 08:59:07,084 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [960089844] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 08:59:07,085 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 08:59:07,085 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-10-28 08:59:07,085 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [434573592] [2021-10-28 08:59:07,086 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-28 08:59:07,087 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 08:59:07,088 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-28 08:59:07,094 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-10-28 08:59:07,097 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 85 out of 103 [2021-10-28 08:59:07,098 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 109 places, 84 transitions, 198 flow. Second operand has 7 states, 7 states have (on average 86.57142857142857) internal successors, (606), 7 states have internal predecessors, (606), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 08:59:07,098 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-28 08:59:07,098 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 85 of 103 [2021-10-28 08:59:07,098 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-28 08:59:07,357 INFO L129 PetriNetUnfolder]: 81/318 cut-off events. [2021-10-28 08:59:07,358 INFO L130 PetriNetUnfolder]: For 70/108 co-relation queries the response was YES. [2021-10-28 08:59:07,364 INFO L84 FinitePrefix]: Finished finitePrefix Result has 571 conditions, 318 events. 81/318 cut-off events. For 70/108 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 1334 event pairs, 5 based on Foata normal form. 8/312 useless extension candidates. Maximal degree in co-relation 533. Up to 61 conditions per place. [2021-10-28 08:59:07,367 INFO L132 encePairwiseOnDemand]: 97/103 looper letters, 15 selfloop transitions, 2 changer transitions 22/109 dead transitions. [2021-10-28 08:59:07,368 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 111 places, 109 transitions, 347 flow [2021-10-28 08:59:07,368 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-10-28 08:59:07,368 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-10-28 08:59:07,375 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 806 transitions. [2021-10-28 08:59:07,379 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8694714131607335 [2021-10-28 08:59:07,379 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 806 transitions. [2021-10-28 08:59:07,379 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 806 transitions. [2021-10-28 08:59:07,380 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-28 08:59:07,380 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 806 transitions. [2021-10-28 08:59:07,383 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 89.55555555555556) internal successors, (806), 9 states have internal predecessors, (806), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 08:59:07,386 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 103.0) internal successors, (1030), 10 states have internal predecessors, (1030), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 08:59:07,387 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 103.0) internal successors, (1030), 10 states have internal predecessors, (1030), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 08:59:07,388 INFO L186 Difference]: Start difference. First operand has 109 places, 84 transitions, 198 flow. Second operand 9 states and 806 transitions. [2021-10-28 08:59:07,388 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 111 places, 109 transitions, 347 flow [2021-10-28 08:59:07,394 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 102 places, 109 transitions, 311 flow, removed 14 selfloop flow, removed 9 redundant places. [2021-10-28 08:59:07,398 INFO L242 Difference]: Finished difference. Result has 109 places, 84 transitions, 200 flow [2021-10-28 08:59:07,398 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=103, PETRI_DIFFERENCE_MINUEND_FLOW=180, PETRI_DIFFERENCE_MINUEND_PLACES=94, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=84, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=82, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=200, PETRI_PLACES=109, PETRI_TRANSITIONS=84} [2021-10-28 08:59:07,399 INFO L334 CegarLoopForPetriNet]: 97 programPoint places, 12 predicate places. [2021-10-28 08:59:07,399 INFO L470 AbstractCegarLoop]: Abstraction has has 109 places, 84 transitions, 200 flow [2021-10-28 08:59:07,400 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 86.57142857142857) internal successors, (606), 7 states have internal predecessors, (606), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 08:59:07,400 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-28 08:59:07,400 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] [2021-10-28 08:59:07,401 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-10-28 08:59:07,401 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-10-28 08:59:07,404 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 08:59:07,404 INFO L85 PathProgramCache]: Analyzing trace with hash -1645694570, now seen corresponding path program 1 times [2021-10-28 08:59:07,404 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 08:59:07,405 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [592145039] [2021-10-28 08:59:07,405 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 08:59:07,406 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 08:59:07,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:59:07,646 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 08:59:07,647 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 08:59:07,647 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [592145039] [2021-10-28 08:59:07,648 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [592145039] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 08:59:07,648 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 08:59:07,649 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-10-28 08:59:07,649 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [270479657] [2021-10-28 08:59:07,650 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-28 08:59:07,656 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 08:59:07,656 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-28 08:59:07,657 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-10-28 08:59:07,660 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 83 out of 103 [2021-10-28 08:59:07,662 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 109 places, 84 transitions, 200 flow. Second operand has 8 states, 8 states have (on average 84.625) internal successors, (677), 8 states have internal predecessors, (677), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 08:59:07,662 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-28 08:59:07,662 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 83 of 103 [2021-10-28 08:59:07,662 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-28 08:59:07,886 INFO L129 PetriNetUnfolder]: 62/267 cut-off events. [2021-10-28 08:59:07,886 INFO L130 PetriNetUnfolder]: For 69/278 co-relation queries the response was YES. [2021-10-28 08:59:07,888 INFO L84 FinitePrefix]: Finished finitePrefix Result has 508 conditions, 267 events. 62/267 cut-off events. For 69/278 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 1039 event pairs, 17 based on Foata normal form. 6/254 useless extension candidates. Maximal degree in co-relation 485. Up to 33 conditions per place. [2021-10-28 08:59:07,891 INFO L132 encePairwiseOnDemand]: 94/103 looper letters, 15 selfloop transitions, 5 changer transitions 21/109 dead transitions. [2021-10-28 08:59:07,891 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 113 places, 109 transitions, 363 flow [2021-10-28 08:59:07,892 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-10-28 08:59:07,892 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2021-10-28 08:59:07,895 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 956 transitions. [2021-10-28 08:59:07,896 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8437775816416593 [2021-10-28 08:59:07,900 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 956 transitions. [2021-10-28 08:59:07,900 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 956 transitions. [2021-10-28 08:59:07,901 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-28 08:59:07,901 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 956 transitions. [2021-10-28 08:59:07,905 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 86.9090909090909) internal successors, (956), 11 states have internal predecessors, (956), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 08:59:07,910 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 103.0) internal successors, (1236), 12 states have internal predecessors, (1236), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 08:59:07,912 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 103.0) internal successors, (1236), 12 states have internal predecessors, (1236), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 08:59:07,912 INFO L186 Difference]: Start difference. First operand has 109 places, 84 transitions, 200 flow. Second operand 11 states and 956 transitions. [2021-10-28 08:59:07,912 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 113 places, 109 transitions, 363 flow [2021-10-28 08:59:07,918 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 105 places, 109 transitions, 327 flow, removed 14 selfloop flow, removed 8 redundant places. [2021-10-28 08:59:07,921 INFO L242 Difference]: Finished difference. Result has 113 places, 84 transitions, 216 flow [2021-10-28 08:59:07,921 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=103, PETRI_DIFFERENCE_MINUEND_FLOW=184, PETRI_DIFFERENCE_MINUEND_PLACES=95, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=84, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=79, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=216, PETRI_PLACES=113, PETRI_TRANSITIONS=84} [2021-10-28 08:59:07,921 INFO L334 CegarLoopForPetriNet]: 97 programPoint places, 16 predicate places. [2021-10-28 08:59:07,922 INFO L470 AbstractCegarLoop]: Abstraction has has 113 places, 84 transitions, 216 flow [2021-10-28 08:59:07,922 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 84.625) internal successors, (677), 8 states have internal predecessors, (677), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 08:59:07,922 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-28 08:59:07,922 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] [2021-10-28 08:59:07,923 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-10-28 08:59:07,923 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-10-28 08:59:07,923 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 08:59:07,924 INFO L85 PathProgramCache]: Analyzing trace with hash 473362293, now seen corresponding path program 1 times [2021-10-28 08:59:07,924 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 08:59:07,924 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2136589274] [2021-10-28 08:59:07,924 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 08:59:07,925 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 08:59:07,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:59:08,099 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 08:59:08,099 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 08:59:08,099 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2136589274] [2021-10-28 08:59:08,100 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2136589274] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 08:59:08,100 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 08:59:08,100 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-10-28 08:59:08,101 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [876614610] [2021-10-28 08:59:08,101 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-28 08:59:08,102 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 08:59:08,103 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-28 08:59:08,111 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-10-28 08:59:08,113 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 85 out of 103 [2021-10-28 08:59:08,114 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 113 places, 84 transitions, 216 flow. Second operand has 7 states, 7 states have (on average 86.85714285714286) internal successors, (608), 7 states have internal predecessors, (608), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 08:59:08,114 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-28 08:59:08,114 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 85 of 103 [2021-10-28 08:59:08,115 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-28 08:59:08,251 INFO L129 PetriNetUnfolder]: 12/151 cut-off events. [2021-10-28 08:59:08,252 INFO L130 PetriNetUnfolder]: For 59/88 co-relation queries the response was YES. [2021-10-28 08:59:08,253 INFO L84 FinitePrefix]: Finished finitePrefix Result has 259 conditions, 151 events. 12/151 cut-off events. For 59/88 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 356 event pairs, 2 based on Foata normal form. 3/146 useless extension candidates. Maximal degree in co-relation 241. Up to 19 conditions per place. [2021-10-28 08:59:08,254 INFO L132 encePairwiseOnDemand]: 96/103 looper letters, 14 selfloop transitions, 3 changer transitions 10/97 dead transitions. [2021-10-28 08:59:08,254 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 116 places, 97 transitions, 325 flow [2021-10-28 08:59:08,255 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-10-28 08:59:08,255 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2021-10-28 08:59:08,258 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 879 transitions. [2021-10-28 08:59:08,259 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8533980582524272 [2021-10-28 08:59:08,259 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 879 transitions. [2021-10-28 08:59:08,259 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 879 transitions. [2021-10-28 08:59:08,260 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-28 08:59:08,260 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 879 transitions. [2021-10-28 08:59:08,264 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 87.9) internal successors, (879), 10 states have internal predecessors, (879), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 08:59:08,267 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 103.0) internal successors, (1133), 11 states have internal predecessors, (1133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 08:59:08,270 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 103.0) internal successors, (1133), 11 states have internal predecessors, (1133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 08:59:08,270 INFO L186 Difference]: Start difference. First operand has 113 places, 84 transitions, 216 flow. Second operand 10 states and 879 transitions. [2021-10-28 08:59:08,271 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 116 places, 97 transitions, 325 flow [2021-10-28 08:59:08,274 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 105 places, 97 transitions, 275 flow, removed 18 selfloop flow, removed 11 redundant places. [2021-10-28 08:59:08,279 INFO L242 Difference]: Finished difference. Result has 112 places, 84 transitions, 210 flow [2021-10-28 08:59:08,279 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=103, PETRI_DIFFERENCE_MINUEND_FLOW=188, PETRI_DIFFERENCE_MINUEND_PLACES=96, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=84, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=81, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=210, PETRI_PLACES=112, PETRI_TRANSITIONS=84} [2021-10-28 08:59:08,280 INFO L334 CegarLoopForPetriNet]: 97 programPoint places, 15 predicate places. [2021-10-28 08:59:08,280 INFO L470 AbstractCegarLoop]: Abstraction has has 112 places, 84 transitions, 210 flow [2021-10-28 08:59:08,281 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 86.85714285714286) internal successors, (608), 7 states have internal predecessors, (608), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 08:59:08,281 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-28 08:59:08,282 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 08:59:08,282 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-10-28 08:59:08,282 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-10-28 08:59:08,283 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 08:59:08,283 INFO L85 PathProgramCache]: Analyzing trace with hash -423208474, now seen corresponding path program 1 times [2021-10-28 08:59:08,283 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 08:59:08,283 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1468003272] [2021-10-28 08:59:08,284 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 08:59:08,284 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 08:59:08,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:59:08,499 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 08:59:08,500 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 08:59:08,500 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1468003272] [2021-10-28 08:59:08,500 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1468003272] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 08:59:08,500 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 08:59:08,500 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-10-28 08:59:08,501 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [283742492] [2021-10-28 08:59:08,501 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-28 08:59:08,501 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 08:59:08,502 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-28 08:59:08,502 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-10-28 08:59:08,503 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 103 [2021-10-28 08:59:08,504 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 112 places, 84 transitions, 210 flow. Second operand has 7 states, 7 states have (on average 90.28571428571429) internal successors, (632), 7 states have internal predecessors, (632), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 08:59:08,505 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-28 08:59:08,505 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 103 [2021-10-28 08:59:08,505 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-28 08:59:08,666 INFO L129 PetriNetUnfolder]: 4/110 cut-off events. [2021-10-28 08:59:08,666 INFO L130 PetriNetUnfolder]: For 29/36 co-relation queries the response was YES. [2021-10-28 08:59:08,666 INFO L84 FinitePrefix]: Finished finitePrefix Result has 187 conditions, 110 events. 4/110 cut-off events. For 29/36 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 158 event pairs, 0 based on Foata normal form. 2/110 useless extension candidates. Maximal degree in co-relation 170. Up to 7 conditions per place. [2021-10-28 08:59:08,667 INFO L132 encePairwiseOnDemand]: 95/103 looper letters, 6 selfloop transitions, 4 changer transitions 13/96 dead transitions. [2021-10-28 08:59:08,667 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 115 places, 96 transitions, 306 flow [2021-10-28 08:59:08,671 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-10-28 08:59:08,671 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2021-10-28 08:59:08,674 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 914 transitions. [2021-10-28 08:59:08,675 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.887378640776699 [2021-10-28 08:59:08,675 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 914 transitions. [2021-10-28 08:59:08,675 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 914 transitions. [2021-10-28 08:59:08,676 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-28 08:59:08,676 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 914 transitions. [2021-10-28 08:59:08,679 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 91.4) internal successors, (914), 10 states have internal predecessors, (914), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 08:59:08,682 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 103.0) internal successors, (1133), 11 states have internal predecessors, (1133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 08:59:08,683 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 103.0) internal successors, (1133), 11 states have internal predecessors, (1133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 08:59:08,683 INFO L186 Difference]: Start difference. First operand has 112 places, 84 transitions, 210 flow. Second operand 10 states and 914 transitions. [2021-10-28 08:59:08,683 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 115 places, 96 transitions, 306 flow [2021-10-28 08:59:08,685 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 106 places, 96 transitions, 272 flow, removed 14 selfloop flow, removed 9 redundant places. [2021-10-28 08:59:08,687 INFO L242 Difference]: Finished difference. Result has 114 places, 83 transitions, 220 flow [2021-10-28 08:59:08,688 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=103, PETRI_DIFFERENCE_MINUEND_FLOW=192, PETRI_DIFFERENCE_MINUEND_PLACES=97, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=84, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=80, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=220, PETRI_PLACES=114, PETRI_TRANSITIONS=83} [2021-10-28 08:59:08,688 INFO L334 CegarLoopForPetriNet]: 97 programPoint places, 17 predicate places. [2021-10-28 08:59:08,688 INFO L470 AbstractCegarLoop]: Abstraction has has 114 places, 83 transitions, 220 flow [2021-10-28 08:59:08,689 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 90.28571428571429) internal successors, (632), 7 states have internal predecessors, (632), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 08:59:08,689 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-28 08:59:08,689 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 08:59:08,689 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-10-28 08:59:08,689 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-10-28 08:59:08,690 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 08:59:08,690 INFO L85 PathProgramCache]: Analyzing trace with hash 1147931406, now seen corresponding path program 1 times [2021-10-28 08:59:08,690 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 08:59:08,690 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [247415702] [2021-10-28 08:59:08,690 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 08:59:08,691 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 08:59:08,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:59:08,812 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 08:59:08,812 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 08:59:08,812 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [247415702] [2021-10-28 08:59:08,813 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [247415702] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 08:59:08,813 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 08:59:08,813 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-10-28 08:59:08,813 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1296203886] [2021-10-28 08:59:08,814 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-28 08:59:08,814 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 08:59:08,814 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-28 08:59:08,815 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-10-28 08:59:08,816 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 83 out of 103 [2021-10-28 08:59:08,817 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 114 places, 83 transitions, 220 flow. Second operand has 7 states, 7 states have (on average 85.14285714285714) internal successors, (596), 7 states have internal predecessors, (596), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 08:59:08,817 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-28 08:59:08,817 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 83 of 103 [2021-10-28 08:59:08,817 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-28 08:59:09,019 INFO L129 PetriNetUnfolder]: 12/157 cut-off events. [2021-10-28 08:59:09,020 INFO L130 PetriNetUnfolder]: For 85/106 co-relation queries the response was YES. [2021-10-28 08:59:09,021 INFO L84 FinitePrefix]: Finished finitePrefix Result has 294 conditions, 157 events. 12/157 cut-off events. For 85/106 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 418 event pairs, 0 based on Foata normal form. 7/162 useless extension candidates. Maximal degree in co-relation 266. Up to 14 conditions per place. [2021-10-28 08:59:09,021 INFO L132 encePairwiseOnDemand]: 92/103 looper letters, 18 selfloop transitions, 7 changer transitions 12/104 dead transitions. [2021-10-28 08:59:09,022 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 117 places, 104 transitions, 401 flow [2021-10-28 08:59:09,022 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-10-28 08:59:09,022 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2021-10-28 08:59:09,025 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 952 transitions. [2021-10-28 08:59:09,026 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8402471315092674 [2021-10-28 08:59:09,026 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 952 transitions. [2021-10-28 08:59:09,026 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 952 transitions. [2021-10-28 08:59:09,027 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-28 08:59:09,027 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 952 transitions. [2021-10-28 08:59:09,030 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 86.54545454545455) internal successors, (952), 11 states have internal predecessors, (952), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 08:59:09,034 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 103.0) internal successors, (1236), 12 states have internal predecessors, (1236), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 08:59:09,034 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 103.0) internal successors, (1236), 12 states have internal predecessors, (1236), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 08:59:09,035 INFO L186 Difference]: Start difference. First operand has 114 places, 83 transitions, 220 flow. Second operand 11 states and 952 transitions. [2021-10-28 08:59:09,035 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 117 places, 104 transitions, 401 flow [2021-10-28 08:59:09,037 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 108 places, 104 transitions, 346 flow, removed 24 selfloop flow, removed 9 redundant places. [2021-10-28 08:59:09,039 INFO L242 Difference]: Finished difference. Result has 117 places, 86 transitions, 259 flow [2021-10-28 08:59:09,040 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=103, PETRI_DIFFERENCE_MINUEND_FLOW=200, PETRI_DIFFERENCE_MINUEND_PLACES=98, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=83, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=76, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=259, PETRI_PLACES=117, PETRI_TRANSITIONS=86} [2021-10-28 08:59:09,040 INFO L334 CegarLoopForPetriNet]: 97 programPoint places, 20 predicate places. [2021-10-28 08:59:09,040 INFO L470 AbstractCegarLoop]: Abstraction has has 117 places, 86 transitions, 259 flow [2021-10-28 08:59:09,041 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 85.14285714285714) internal successors, (596), 7 states have internal predecessors, (596), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 08:59:09,041 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-28 08:59:09,041 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 08:59:09,041 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-10-28 08:59:09,041 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-10-28 08:59:09,042 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 08:59:09,042 INFO L85 PathProgramCache]: Analyzing trace with hash -197039730, now seen corresponding path program 2 times [2021-10-28 08:59:09,042 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 08:59:09,042 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [938697230] [2021-10-28 08:59:09,042 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 08:59:09,043 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 08:59:09,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:59:09,177 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 08:59:09,178 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 08:59:09,178 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [938697230] [2021-10-28 08:59:09,178 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [938697230] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 08:59:09,178 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 08:59:09,178 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-10-28 08:59:09,179 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2011306532] [2021-10-28 08:59:09,180 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-28 08:59:09,180 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 08:59:09,181 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-28 08:59:09,186 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-10-28 08:59:09,191 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 83 out of 103 [2021-10-28 08:59:09,192 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 117 places, 86 transitions, 259 flow. Second operand has 8 states, 8 states have (on average 84.875) internal successors, (679), 8 states have internal predecessors, (679), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 08:59:09,193 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-28 08:59:09,193 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 83 of 103 [2021-10-28 08:59:09,193 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-28 08:59:09,330 INFO L129 PetriNetUnfolder]: 6/132 cut-off events. [2021-10-28 08:59:09,330 INFO L130 PetriNetUnfolder]: For 121/170 co-relation queries the response was YES. [2021-10-28 08:59:09,331 INFO L84 FinitePrefix]: Finished finitePrefix Result has 281 conditions, 132 events. 6/132 cut-off events. For 121/170 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 309 event pairs, 0 based on Foata normal form. 6/136 useless extension candidates. Maximal degree in co-relation 260. Up to 13 conditions per place. [2021-10-28 08:59:09,331 INFO L132 encePairwiseOnDemand]: 94/103 looper letters, 11 selfloop transitions, 5 changer transitions 15/98 dead transitions. [2021-10-28 08:59:09,332 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 121 places, 98 transitions, 397 flow [2021-10-28 08:59:09,332 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-10-28 08:59:09,332 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2021-10-28 08:59:09,335 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 943 transitions. [2021-10-28 08:59:09,336 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8323036187113857 [2021-10-28 08:59:09,336 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 943 transitions. [2021-10-28 08:59:09,336 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 943 transitions. [2021-10-28 08:59:09,337 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-28 08:59:09,338 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 943 transitions. [2021-10-28 08:59:09,341 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 85.72727272727273) internal successors, (943), 11 states have internal predecessors, (943), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 08:59:09,345 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 103.0) internal successors, (1236), 12 states have internal predecessors, (1236), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 08:59:09,346 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 103.0) internal successors, (1236), 12 states have internal predecessors, (1236), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 08:59:09,346 INFO L186 Difference]: Start difference. First operand has 117 places, 86 transitions, 259 flow. Second operand 11 states and 943 transitions. [2021-10-28 08:59:09,346 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 121 places, 98 transitions, 397 flow [2021-10-28 08:59:09,349 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 112 places, 98 transitions, 354 flow, removed 17 selfloop flow, removed 9 redundant places. [2021-10-28 08:59:09,351 INFO L242 Difference]: Finished difference. Result has 120 places, 83 transitions, 248 flow [2021-10-28 08:59:09,352 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=103, PETRI_DIFFERENCE_MINUEND_FLOW=239, PETRI_DIFFERENCE_MINUEND_PLACES=102, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=86, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=81, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=248, PETRI_PLACES=120, PETRI_TRANSITIONS=83} [2021-10-28 08:59:09,352 INFO L334 CegarLoopForPetriNet]: 97 programPoint places, 23 predicate places. [2021-10-28 08:59:09,352 INFO L470 AbstractCegarLoop]: Abstraction has has 120 places, 83 transitions, 248 flow [2021-10-28 08:59:09,353 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 84.875) internal successors, (679), 8 states have internal predecessors, (679), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 08:59:09,353 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-28 08:59:09,353 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 08:59:09,354 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-10-28 08:59:09,354 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-10-28 08:59:09,354 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 08:59:09,354 INFO L85 PathProgramCache]: Analyzing trace with hash -1544650414, now seen corresponding path program 1 times [2021-10-28 08:59:09,355 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 08:59:09,355 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1451597180] [2021-10-28 08:59:09,355 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 08:59:09,356 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 08:59:09,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:59:09,519 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 08:59:09,520 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 08:59:09,520 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1451597180] [2021-10-28 08:59:09,520 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1451597180] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 08:59:09,520 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 08:59:09,521 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-10-28 08:59:09,521 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [516562578] [2021-10-28 08:59:09,522 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-28 08:59:09,522 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 08:59:09,522 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-28 08:59:09,523 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-10-28 08:59:09,524 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 83 out of 103 [2021-10-28 08:59:09,525 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 120 places, 83 transitions, 248 flow. Second operand has 8 states, 8 states have (on average 84.875) internal successors, (679), 8 states have internal predecessors, (679), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 08:59:09,526 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-28 08:59:09,526 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 83 of 103 [2021-10-28 08:59:09,526 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-28 08:59:09,648 INFO L129 PetriNetUnfolder]: 4/98 cut-off events. [2021-10-28 08:59:09,648 INFO L130 PetriNetUnfolder]: For 76/82 co-relation queries the response was YES. [2021-10-28 08:59:09,648 INFO L84 FinitePrefix]: Finished finitePrefix Result has 192 conditions, 98 events. 4/98 cut-off events. For 76/82 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 105 event pairs, 0 based on Foata normal form. 2/100 useless extension candidates. Maximal degree in co-relation 175. Up to 6 conditions per place. [2021-10-28 08:59:09,649 INFO L132 encePairwiseOnDemand]: 96/103 looper letters, 0 selfloop transitions, 0 changer transitions 88/88 dead transitions. [2021-10-28 08:59:09,649 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 121 places, 88 transitions, 320 flow [2021-10-28 08:59:09,650 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-10-28 08:59:09,650 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2021-10-28 08:59:09,652 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 854 transitions. [2021-10-28 08:59:09,653 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.829126213592233 [2021-10-28 08:59:09,654 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 854 transitions. [2021-10-28 08:59:09,654 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 854 transitions. [2021-10-28 08:59:09,655 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-28 08:59:09,655 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 854 transitions. [2021-10-28 08:59:09,658 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 85.4) internal successors, (854), 10 states have internal predecessors, (854), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 08:59:09,661 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 103.0) internal successors, (1133), 11 states have internal predecessors, (1133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 08:59:09,663 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 103.0) internal successors, (1133), 11 states have internal predecessors, (1133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 08:59:09,663 INFO L186 Difference]: Start difference. First operand has 120 places, 83 transitions, 248 flow. Second operand 10 states and 854 transitions. [2021-10-28 08:59:09,664 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 121 places, 88 transitions, 320 flow [2021-10-28 08:59:09,666 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 108 places, 88 transitions, 266 flow, removed 17 selfloop flow, removed 13 redundant places. [2021-10-28 08:59:09,667 INFO L242 Difference]: Finished difference. Result has 108 places, 0 transitions, 0 flow [2021-10-28 08:59:09,668 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=103, PETRI_DIFFERENCE_MINUEND_FLOW=200, PETRI_DIFFERENCE_MINUEND_PLACES=99, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=81, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=81, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=0, PETRI_PLACES=108, PETRI_TRANSITIONS=0} [2021-10-28 08:59:09,668 INFO L334 CegarLoopForPetriNet]: 97 programPoint places, 11 predicate places. [2021-10-28 08:59:09,668 INFO L470 AbstractCegarLoop]: Abstraction has has 108 places, 0 transitions, 0 flow [2021-10-28 08:59:09,669 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 84.875) internal successors, (679), 8 states have internal predecessors, (679), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 08:59:09,672 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-28 08:59:09,673 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATION [2021-10-28 08:59:09,673 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATION [2021-10-28 08:59:09,673 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATION [2021-10-28 08:59:09,674 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3INUSE_VIOLATION [2021-10-28 08:59:09,674 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-10-28 08:59:09,677 INFO L731 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1, 1, 1, 1] [2021-10-28 08:59:09,682 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2021-10-28 08:59:09,682 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-28 08:59:09,685 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.10 08:59:09 BasicIcfg [2021-10-28 08:59:09,685 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-28 08:59:09,686 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-28 08:59:09,686 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-28 08:59:09,686 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-28 08:59:09,687 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 08:59:05" (3/4) ... [2021-10-28 08:59:09,690 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-10-28 08:59:09,697 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P0 [2021-10-28 08:59:09,698 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P1 [2021-10-28 08:59:09,698 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P2 [2021-10-28 08:59:09,698 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P3 [2021-10-28 08:59:09,705 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 16 nodes and edges [2021-10-28 08:59:09,705 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2021-10-28 08:59:09,705 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-28 08:59:09,706 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-28 08:59:09,765 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6474bd7-7da5-4f7d-84a7-3ef851d9a8f6/bin/uautomizer-UnR33cPsHg/witness.graphml [2021-10-28 08:59:09,765 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-28 08:59:09,767 INFO L168 Benchmark]: Toolchain (without parser) took 5725.89 ms. Allocated memory was 107.0 MB in the beginning and 132.1 MB in the end (delta: 25.2 MB). Free memory was 64.0 MB in the beginning and 47.3 MB in the end (delta: 16.7 MB). Peak memory consumption was 41.3 MB. Max. memory is 16.1 GB. [2021-10-28 08:59:09,767 INFO L168 Benchmark]: CDTParser took 0.26 ms. Allocated memory is still 107.0 MB. Free memory is still 82.0 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-28 08:59:09,768 INFO L168 Benchmark]: CACSL2BoogieTranslator took 542.51 ms. Allocated memory is still 107.0 MB. Free memory was 63.8 MB in the beginning and 71.5 MB in the end (delta: -7.7 MB). Peak memory consumption was 6.6 MB. Max. memory is 16.1 GB. [2021-10-28 08:59:09,769 INFO L168 Benchmark]: Boogie Procedure Inliner took 48.89 ms. Allocated memory is still 107.0 MB. Free memory was 71.5 MB in the beginning and 69.4 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-28 08:59:09,771 INFO L168 Benchmark]: Boogie Preprocessor took 28.15 ms. Allocated memory is still 107.0 MB. Free memory was 69.4 MB in the beginning and 67.9 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-28 08:59:09,771 INFO L168 Benchmark]: RCFGBuilder took 554.85 ms. Allocated memory is still 107.0 MB. Free memory was 67.9 MB in the beginning and 55.0 MB in the end (delta: 12.9 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2021-10-28 08:59:09,772 INFO L168 Benchmark]: TraceAbstraction took 4458.67 ms. Allocated memory was 107.0 MB in the beginning and 132.1 MB in the end (delta: 25.2 MB). Free memory was 54.5 MB in the beginning and 50.5 MB in the end (delta: 4.0 MB). Peak memory consumption was 30.3 MB. Max. memory is 16.1 GB. [2021-10-28 08:59:09,772 INFO L168 Benchmark]: Witness Printer took 79.39 ms. Allocated memory is still 132.1 MB. Free memory was 50.5 MB in the beginning and 47.3 MB in the end (delta: 3.1 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-10-28 08:59:09,774 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26 ms. Allocated memory is still 107.0 MB. Free memory is still 82.0 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 542.51 ms. Allocated memory is still 107.0 MB. Free memory was 63.8 MB in the beginning and 71.5 MB in the end (delta: -7.7 MB). Peak memory consumption was 6.6 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 48.89 ms. Allocated memory is still 107.0 MB. Free memory was 71.5 MB in the beginning and 69.4 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 28.15 ms. Allocated memory is still 107.0 MB. Free memory was 69.4 MB in the beginning and 67.9 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 554.85 ms. Allocated memory is still 107.0 MB. Free memory was 67.9 MB in the beginning and 55.0 MB in the end (delta: 12.9 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * TraceAbstraction took 4458.67 ms. Allocated memory was 107.0 MB in the beginning and 132.1 MB in the end (delta: 25.2 MB). Free memory was 54.5 MB in the beginning and 50.5 MB in the end (delta: 4.0 MB). Peak memory consumption was 30.3 MB. Max. memory is 16.1 GB. * Witness Printer took 79.39 ms. Allocated memory is still 132.1 MB. Free memory was 50.5 MB in the beginning and 47.3 MB in the end (delta: 3.1 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * 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 9 procedures, 134 locations, 5 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 4.2s, OverallIterations: 8, TraceHistogramMax: 1, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 2.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 138 SDtfs, 313 SDslu, 389 SDs, 0 SdLazy, 233 SolverSat, 31 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 109 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 93 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 94 ImplicationChecksByTransitivity, 1.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=259occurred in iteration=6, InterpolantAutomatonStates: 82, 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, 0.2s SatisfiabilityAnalysisTime, 1.4s InterpolantComputationTime, 525 NumberOfCodeBlocks, 525 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 517 ConstructedInterpolants, 0 QuantifiedInterpolants, 3069 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 8 InterpolantComputations, 8 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2021-10-28 08:59:09,824 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6474bd7-7da5-4f7d-84a7-3ef851d9a8f6/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...