./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/pthread-wmm/safe029_power.opt_pso.opt_rmo.opt.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version b2eff8ba Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d0c6b66-34da-45f2-9633-42efff4dc68f/bin/uautomizer-GMMbpWq8iD/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d0c6b66-34da-45f2-9633-42efff4dc68f/bin/uautomizer-GMMbpWq8iD/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d0c6b66-34da-45f2-9633-42efff4dc68f/bin/uautomizer-GMMbpWq8iD/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d0c6b66-34da-45f2-9633-42efff4dc68f/bin/uautomizer-GMMbpWq8iD/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread-wmm/safe029_power.opt_pso.opt_rmo.opt.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d0c6b66-34da-45f2-9633-42efff4dc68f/bin/uautomizer-GMMbpWq8iD/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d0c6b66-34da-45f2-9633-42efff4dc68f/bin/uautomizer-GMMbpWq8iD --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 9df54eb091d78e0f82ec179542e5b1e4fed45243a056538ca557e474796bb018 .......................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE --- Real Ultimate output --- This is Ultimate 0.2.1-dev-b2eff8b [2021-10-28 23:02:07,649 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-28 23:02:07,651 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-28 23:02:07,694 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-28 23:02:07,694 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-28 23:02:07,696 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-28 23:02:07,697 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-28 23:02:07,700 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-28 23:02:07,702 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-28 23:02:07,703 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-28 23:02:07,704 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-28 23:02:07,706 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-28 23:02:07,706 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-28 23:02:07,708 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-28 23:02:07,709 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-28 23:02:07,711 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-28 23:02:07,712 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-28 23:02:07,713 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-28 23:02:07,715 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-28 23:02:07,717 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-28 23:02:07,719 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-28 23:02:07,726 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-28 23:02:07,727 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-28 23:02:07,729 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-28 23:02:07,733 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-28 23:02:07,734 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-28 23:02:07,734 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-28 23:02:07,735 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-28 23:02:07,736 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-28 23:02:07,737 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-28 23:02:07,737 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-28 23:02:07,738 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-28 23:02:07,739 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-28 23:02:07,740 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-28 23:02:07,741 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-28 23:02:07,741 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-28 23:02:07,742 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-28 23:02:07,743 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-28 23:02:07,743 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-28 23:02:07,744 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-28 23:02:07,745 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-28 23:02:07,746 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d0c6b66-34da-45f2-9633-42efff4dc68f/bin/uautomizer-GMMbpWq8iD/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-10-28 23:02:07,776 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-28 23:02:07,777 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-28 23:02:07,777 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-28 23:02:07,777 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-28 23:02:07,778 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-28 23:02:07,779 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-28 23:02:07,779 INFO L138 SettingsManager]: * Use SBE=true [2021-10-28 23:02:07,780 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-28 23:02:07,780 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-28 23:02:07,780 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-28 23:02:07,781 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-28 23:02:07,781 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-28 23:02:07,790 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-28 23:02:07,790 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-28 23:02:07,790 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-28 23:02:07,790 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-28 23:02:07,790 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-28 23:02:07,791 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-28 23:02:07,791 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-28 23:02:07,791 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-28 23:02:07,791 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-28 23:02:07,791 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-28 23:02:07,792 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-28 23:02:07,792 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-28 23:02:07,792 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-28 23:02:07,792 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-28 23:02:07,793 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-10-28 23:02:07,793 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-28 23:02:07,793 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-10-28 23:02:07,795 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-10-28 23:02:07,795 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-28 23:02:07,795 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-28 23:02:07,795 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_7d0c6b66-34da-45f2-9633-42efff4dc68f/bin/uautomizer-GMMbpWq8iD/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d0c6b66-34da-45f2-9633-42efff4dc68f/bin/uautomizer-GMMbpWq8iD Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 9df54eb091d78e0f82ec179542e5b1e4fed45243a056538ca557e474796bb018 [2021-10-28 23:02:08,037 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-28 23:02:08,069 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-28 23:02:08,072 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-28 23:02:08,073 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-28 23:02:08,073 INFO L275 PluginConnector]: CDTParser initialized [2021-10-28 23:02:08,074 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d0c6b66-34da-45f2-9633-42efff4dc68f/bin/uautomizer-GMMbpWq8iD/../../sv-benchmarks/c/pthread-wmm/safe029_power.opt_pso.opt_rmo.opt.i [2021-10-28 23:02:08,170 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d0c6b66-34da-45f2-9633-42efff4dc68f/bin/uautomizer-GMMbpWq8iD/data/232168320/a50588c0e1104b1b9eb7a49a33c58f28/FLAGc004ab914 [2021-10-28 23:02:08,665 INFO L306 CDTParser]: Found 1 translation units. [2021-10-28 23:02:08,669 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d0c6b66-34da-45f2-9633-42efff4dc68f/sv-benchmarks/c/pthread-wmm/safe029_power.opt_pso.opt_rmo.opt.i [2021-10-28 23:02:08,698 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d0c6b66-34da-45f2-9633-42efff4dc68f/bin/uautomizer-GMMbpWq8iD/data/232168320/a50588c0e1104b1b9eb7a49a33c58f28/FLAGc004ab914 [2021-10-28 23:02:09,005 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d0c6b66-34da-45f2-9633-42efff4dc68f/bin/uautomizer-GMMbpWq8iD/data/232168320/a50588c0e1104b1b9eb7a49a33c58f28 [2021-10-28 23:02:09,007 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-28 23:02:09,008 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-28 23:02:09,010 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-28 23:02:09,010 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-28 23:02:09,026 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-28 23:02:09,027 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 11:02:09" (1/1) ... [2021-10-28 23:02:09,028 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1bef6b0f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:02:09, skipping insertion in model container [2021-10-28 23:02:09,028 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 11:02:09" (1/1) ... [2021-10-28 23:02:09,040 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-28 23:02:09,096 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-28 23:02:09,309 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_7d0c6b66-34da-45f2-9633-42efff4dc68f/sv-benchmarks/c/pthread-wmm/safe029_power.opt_pso.opt_rmo.opt.i[967,980] [2021-10-28 23:02:09,573 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-28 23:02:09,583 INFO L203 MainTranslator]: Completed pre-run [2021-10-28 23:02:09,598 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_7d0c6b66-34da-45f2-9633-42efff4dc68f/sv-benchmarks/c/pthread-wmm/safe029_power.opt_pso.opt_rmo.opt.i[967,980] [2021-10-28 23:02:09,672 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-28 23:02:09,729 INFO L208 MainTranslator]: Completed translation [2021-10-28 23:02:09,731 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:02:09 WrapperNode [2021-10-28 23:02:09,731 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-28 23:02:09,733 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-28 23:02:09,733 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-28 23:02:09,734 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-28 23:02:09,741 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:02:09" (1/1) ... [2021-10-28 23:02:09,779 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:02:09" (1/1) ... [2021-10-28 23:02:09,827 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-28 23:02:09,828 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-28 23:02:09,828 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-28 23:02:09,828 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-28 23:02:09,839 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:02:09" (1/1) ... [2021-10-28 23:02:09,839 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:02:09" (1/1) ... [2021-10-28 23:02:09,854 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:02:09" (1/1) ... [2021-10-28 23:02:09,855 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:02:09" (1/1) ... [2021-10-28 23:02:09,864 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:02:09" (1/1) ... [2021-10-28 23:02:09,892 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:02:09" (1/1) ... [2021-10-28 23:02:09,895 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:02:09" (1/1) ... [2021-10-28 23:02:09,899 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-28 23:02:09,900 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-28 23:02:09,913 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-28 23:02:09,913 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-28 23:02:09,914 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:02:09" (1/1) ... [2021-10-28 23:02:09,921 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-28 23:02:09,937 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d0c6b66-34da-45f2-9633-42efff4dc68f/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:02:09,951 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d0c6b66-34da-45f2-9633-42efff4dc68f/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-28 23:02:09,977 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d0c6b66-34da-45f2-9633-42efff4dc68f/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-28 23:02:10,010 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-10-28 23:02:10,011 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-10-28 23:02:10,011 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-28 23:02:10,011 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-28 23:02:10,011 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2021-10-28 23:02:10,011 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2021-10-28 23:02:10,012 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2021-10-28 23:02:10,012 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2021-10-28 23:02:10,012 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-28 23:02:10,012 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-10-28 23:02:10,012 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-28 23:02:10,012 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-28 23:02:10,014 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 23:02:11,785 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-28 23:02:11,785 INFO L299 CfgBuilder]: Removed 10 assume(true) statements. [2021-10-28 23:02:11,788 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 11:02:11 BoogieIcfgContainer [2021-10-28 23:02:11,788 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-28 23:02:11,791 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-28 23:02:11,792 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-28 23:02:11,795 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-28 23:02:11,795 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.10 11:02:09" (1/3) ... [2021-10-28 23:02:11,796 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@433fe334 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 11:02:11, skipping insertion in model container [2021-10-28 23:02:11,796 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:02:09" (2/3) ... [2021-10-28 23:02:11,797 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@433fe334 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 11:02:11, skipping insertion in model container [2021-10-28 23:02:11,797 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 11:02:11" (3/3) ... [2021-10-28 23:02:11,801 INFO L111 eAbstractionObserver]: Analyzing ICFG safe029_power.opt_pso.opt_rmo.opt.i [2021-10-28 23:02:11,806 WARN L149 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-10-28 23:02:11,807 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-28 23:02:11,807 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2021-10-28 23:02:11,807 INFO L513 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-10-28 23:02:11,841 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:02:11,841 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:02:11,842 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:02:11,842 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:02:11,842 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:02:11,842 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:02:11,843 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:02:11,843 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:02:11,843 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#t~ite5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:02:11,843 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#t~ite6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:02:11,844 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#t~ite5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:02:11,844 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#t~ite9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:02:11,844 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#t~ite8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:02:11,844 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#t~ite7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:02:11,844 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#t~ite10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:02:11,845 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#t~ite5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:02:11,845 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#t~ite6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:02:11,846 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#t~ite5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:02:11,846 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#t~ite9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:02:11,847 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#t~ite8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:02:11,847 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#t~ite7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:02:11,847 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#t~ite10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:02:11,848 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:02:11,848 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:02:11,848 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:02:11,849 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:02:11,849 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:02:11,850 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:02:11,850 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:02:11,850 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:02:11,851 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:02:11,851 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:02:11,852 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:02:11,852 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:02:11,853 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0___VERIFIER_assert_~expression not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:02:11,853 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0___VERIFIER_assert_#in~expression| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:02:11,853 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0___VERIFIER_assert_~expression not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:02:11,853 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0___VERIFIER_assert_#in~expression| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:02:11,853 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0___VERIFIER_assert_~expression not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:02:11,854 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0___VERIFIER_assert_#in~expression| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:02:11,854 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0___VERIFIER_assert_~expression not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:02:11,854 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0___VERIFIER_assert_#in~expression| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:02:11,855 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#t~ite11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:02:11,855 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#t~ite11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:02:11,855 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#t~ite12| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:02:11,855 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#t~ite13| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:02:11,855 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#t~ite14| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:02:11,856 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#t~ite15| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:02:11,856 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#t~ite16| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:02:11,856 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#t~ite11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:02:11,856 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#t~ite11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:02:11,857 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#t~ite12| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:02:11,857 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#t~ite13| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:02:11,857 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#t~ite14| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:02:11,858 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#t~ite15| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:02:11,858 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#t~ite16| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:02:11,858 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:02:11,858 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:02:11,859 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:02:11,859 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:02:11,864 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0___VERIFIER_assert_~expression not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:02:11,864 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:02:11,865 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:02:11,865 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0___VERIFIER_assert_#in~expression| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:02:11,865 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#t~ite12| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:02:11,865 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#t~ite11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:02:11,866 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#t~ite14| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:02:11,866 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:02:11,866 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#t~ite13| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:02:11,867 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#t~ite16| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:02:11,867 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#t~ite15| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:02:11,867 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:02:11,869 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#t~ite10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:02:11,869 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#t~ite5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:02:11,870 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#t~ite8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:02:11,870 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:02:11,870 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#t~ite9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:02:11,871 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#t~ite6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:02:11,871 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#t~ite7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:02:11,871 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:02:11,871 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:02:11,872 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:02:11,873 INFO L148 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-10-28 23:02:11,921 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-28 23:02:11,938 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 23:02:11,939 INFO L340 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2021-10-28 23:02:11,950 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 90 places, 85 transitions, 180 flow [2021-10-28 23:02:12,003 INFO L129 PetriNetUnfolder]: 2/83 cut-off events. [2021-10-28 23:02:12,004 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-10-28 23:02:12,010 INFO L84 FinitePrefix]: Finished finitePrefix Result has 90 conditions, 83 events. 2/83 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 44 event pairs, 0 based on Foata normal form. 0/79 useless extension candidates. Maximal degree in co-relation 50. Up to 2 conditions per place. [2021-10-28 23:02:12,010 INFO L82 GeneralOperation]: Start removeDead. Operand has 90 places, 85 transitions, 180 flow [2021-10-28 23:02:12,016 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 88 places, 83 transitions, 172 flow [2021-10-28 23:02:12,037 INFO L129 PetriNetUnfolder]: 0/52 cut-off events. [2021-10-28 23:02:12,038 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-10-28 23:02:12,038 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-28 23:02:12,039 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] [2021-10-28 23:02:12,039 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting P1Err0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION (and 2 more)] === [2021-10-28 23:02:12,046 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:02:12,052 INFO L85 PathProgramCache]: Analyzing trace with hash -983988078, now seen corresponding path program 1 times [2021-10-28 23:02:12,061 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:02:12,061 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2085611627] [2021-10-28 23:02:12,061 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:02:12,062 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:02:12,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:02:12,406 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 23:02:12,407 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:02:12,407 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2085611627] [2021-10-28 23:02:12,408 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2085611627] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 23:02:12,408 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 23:02:12,409 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-28 23:02:12,410 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [203346239] [2021-10-28 23:02:12,419 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-28 23:02:12,419 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:02:12,431 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-28 23:02:12,433 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-28 23:02:12,435 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 75 out of 85 [2021-10-28 23:02:12,438 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 88 places, 83 transitions, 172 flow. Second operand has 3 states, 3 states have (on average 75.66666666666667) internal successors, (227), 3 states have internal predecessors, (227), 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 23:02:12,438 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-28 23:02:12,439 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 75 of 85 [2021-10-28 23:02:12,440 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-28 23:02:12,518 INFO L129 PetriNetUnfolder]: 16/185 cut-off events. [2021-10-28 23:02:12,518 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-10-28 23:02:12,520 INFO L84 FinitePrefix]: Finished finitePrefix Result has 227 conditions, 185 events. 16/185 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 597 event pairs, 6 based on Foata normal form. 9/183 useless extension candidates. Maximal degree in co-relation 185. Up to 27 conditions per place. [2021-10-28 23:02:12,522 INFO L132 encePairwiseOnDemand]: 80/85 looper letters, 7 selfloop transitions, 2 changer transitions 0/82 dead transitions. [2021-10-28 23:02:12,522 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 82 transitions, 188 flow [2021-10-28 23:02:12,523 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-28 23:02:12,525 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-10-28 23:02:12,533 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 239 transitions. [2021-10-28 23:02:12,536 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.9372549019607843 [2021-10-28 23:02:12,536 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 239 transitions. [2021-10-28 23:02:12,537 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 239 transitions. [2021-10-28 23:02:12,538 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-28 23:02:12,541 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 239 transitions. [2021-10-28 23:02:12,545 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 79.66666666666667) internal successors, (239), 3 states have internal predecessors, (239), 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 23:02:12,550 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 85.0) internal successors, (340), 4 states have internal predecessors, (340), 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 23:02:12,550 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 85.0) internal successors, (340), 4 states have internal predecessors, (340), 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 23:02:12,552 INFO L186 Difference]: Start difference. First operand has 88 places, 83 transitions, 172 flow. Second operand 3 states and 239 transitions. [2021-10-28 23:02:12,553 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 82 transitions, 188 flow [2021-10-28 23:02:12,556 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 86 places, 82 transitions, 186 flow, removed 0 selfloop flow, removed 2 redundant places. [2021-10-28 23:02:12,560 INFO L242 Difference]: Finished difference. Result has 86 places, 79 transitions, 166 flow [2021-10-28 23:02:12,562 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=85, PETRI_DIFFERENCE_MINUEND_FLOW=162, PETRI_DIFFERENCE_MINUEND_PLACES=84, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=79, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=77, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=166, PETRI_PLACES=86, PETRI_TRANSITIONS=79} [2021-10-28 23:02:12,563 INFO L334 CegarLoopForPetriNet]: 88 programPoint places, -2 predicate places. [2021-10-28 23:02:12,563 INFO L470 AbstractCegarLoop]: Abstraction has has 86 places, 79 transitions, 166 flow [2021-10-28 23:02:12,563 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 75.66666666666667) internal successors, (227), 3 states have internal predecessors, (227), 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 23:02:12,564 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-28 23:02:12,564 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] [2021-10-28 23:02:12,564 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-28 23:02:12,564 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION (and 2 more)] === [2021-10-28 23:02:12,565 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:02:12,565 INFO L85 PathProgramCache]: Analyzing trace with hash -260033218, now seen corresponding path program 1 times [2021-10-28 23:02:12,565 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:02:12,566 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1874699957] [2021-10-28 23:02:12,566 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:02:12,566 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:02:12,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:02:12,844 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 23:02:12,844 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:02:12,845 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1874699957] [2021-10-28 23:02:12,846 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1874699957] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 23:02:12,846 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 23:02:12,847 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-10-28 23:02:12,847 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1921869696] [2021-10-28 23:02:12,850 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-28 23:02:12,850 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:02:12,851 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-28 23:02:12,852 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-10-28 23:02:12,854 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 72 out of 85 [2021-10-28 23:02:12,855 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 79 transitions, 166 flow. Second operand has 6 states, 6 states have (on average 73.16666666666667) internal successors, (439), 6 states have internal predecessors, (439), 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 23:02:12,856 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-28 23:02:12,856 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 72 of 85 [2021-10-28 23:02:12,856 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-28 23:02:13,052 INFO L129 PetriNetUnfolder]: 30/236 cut-off events. [2021-10-28 23:02:13,053 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-10-28 23:02:13,054 INFO L84 FinitePrefix]: Finished finitePrefix Result has 318 conditions, 236 events. 30/236 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 993 event pairs, 6 based on Foata normal form. 0/230 useless extension candidates. Maximal degree in co-relation 275. Up to 36 conditions per place. [2021-10-28 23:02:13,055 INFO L132 encePairwiseOnDemand]: 78/85 looper letters, 8 selfloop transitions, 3 changer transitions 29/102 dead transitions. [2021-10-28 23:02:13,055 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 94 places, 102 transitions, 278 flow [2021-10-28 23:02:13,055 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-10-28 23:02:13,056 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-10-28 23:02:13,059 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 683 transitions. [2021-10-28 23:02:13,061 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8928104575163399 [2021-10-28 23:02:13,061 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 683 transitions. [2021-10-28 23:02:13,061 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 683 transitions. [2021-10-28 23:02:13,062 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-28 23:02:13,062 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 683 transitions. [2021-10-28 23:02:13,066 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 75.88888888888889) internal successors, (683), 9 states have internal predecessors, (683), 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 23:02:13,069 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 85.0) internal successors, (850), 10 states have internal predecessors, (850), 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 23:02:13,070 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 85.0) internal successors, (850), 10 states have internal predecessors, (850), 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 23:02:13,070 INFO L186 Difference]: Start difference. First operand has 86 places, 79 transitions, 166 flow. Second operand 9 states and 683 transitions. [2021-10-28 23:02:13,070 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 94 places, 102 transitions, 278 flow [2021-10-28 23:02:13,072 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 92 places, 102 transitions, 274 flow, removed 0 selfloop flow, removed 2 redundant places. [2021-10-28 23:02:13,074 INFO L242 Difference]: Finished difference. Result has 99 places, 73 transitions, 189 flow [2021-10-28 23:02:13,074 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=85, PETRI_DIFFERENCE_MINUEND_FLOW=162, PETRI_DIFFERENCE_MINUEND_PLACES=84, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=79, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=76, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=189, PETRI_PLACES=99, PETRI_TRANSITIONS=73} [2021-10-28 23:02:13,075 INFO L334 CegarLoopForPetriNet]: 88 programPoint places, 11 predicate places. [2021-10-28 23:02:13,075 INFO L470 AbstractCegarLoop]: Abstraction has has 99 places, 73 transitions, 189 flow [2021-10-28 23:02:13,075 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 73.16666666666667) internal successors, (439), 6 states have internal predecessors, (439), 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 23:02:13,076 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-28 23:02:13,076 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 23:02:13,076 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-10-28 23:02:13,076 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION (and 2 more)] === [2021-10-28 23:02:13,077 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:02:13,077 INFO L85 PathProgramCache]: Analyzing trace with hash -81606177, now seen corresponding path program 1 times [2021-10-28 23:02:13,077 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:02:13,077 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [683660864] [2021-10-28 23:02:13,077 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:02:13,078 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:02:13,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:02:13,421 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 23:02:13,422 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:02:13,422 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [683660864] [2021-10-28 23:02:13,423 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [683660864] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 23:02:13,424 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 23:02:13,424 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-10-28 23:02:13,424 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1988357224] [2021-10-28 23:02:13,425 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-10-28 23:02:13,425 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:02:13,428 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-10-28 23:02:13,433 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2021-10-28 23:02:13,436 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 64 out of 85 [2021-10-28 23:02:13,438 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 99 places, 73 transitions, 189 flow. Second operand has 11 states, 11 states have (on average 65.0909090909091) internal successors, (716), 11 states have internal predecessors, (716), 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 23:02:13,438 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-28 23:02:13,438 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 64 of 85 [2021-10-28 23:02:13,438 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-28 23:02:13,878 INFO L129 PetriNetUnfolder]: 138/390 cut-off events. [2021-10-28 23:02:13,878 INFO L130 PetriNetUnfolder]: For 296/296 co-relation queries the response was YES. [2021-10-28 23:02:13,883 INFO L84 FinitePrefix]: Finished finitePrefix Result has 908 conditions, 390 events. 138/390 cut-off events. For 296/296 co-relation queries the response was YES. Maximal size of possible extension queue 36. Compared 1792 event pairs, 59 based on Foata normal form. 14/395 useless extension candidates. Maximal degree in co-relation 854. Up to 129 conditions per place. [2021-10-28 23:02:13,887 INFO L132 encePairwiseOnDemand]: 73/85 looper letters, 13 selfloop transitions, 9 changer transitions 35/114 dead transitions. [2021-10-28 23:02:13,887 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 100 places, 114 transitions, 413 flow [2021-10-28 23:02:13,887 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-10-28 23:02:13,888 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2021-10-28 23:02:13,892 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 1084 transitions. [2021-10-28 23:02:13,893 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7970588235294118 [2021-10-28 23:02:13,893 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 1084 transitions. [2021-10-28 23:02:13,893 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 1084 transitions. [2021-10-28 23:02:13,894 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-28 23:02:13,894 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 1084 transitions. [2021-10-28 23:02:13,898 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 67.75) internal successors, (1084), 16 states have internal predecessors, (1084), 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 23:02:13,904 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 85.0) internal successors, (1445), 17 states have internal predecessors, (1445), 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 23:02:13,906 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 85.0) internal successors, (1445), 17 states have internal predecessors, (1445), 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 23:02:13,906 INFO L186 Difference]: Start difference. First operand has 99 places, 73 transitions, 189 flow. Second operand 16 states and 1084 transitions. [2021-10-28 23:02:13,906 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 100 places, 114 transitions, 413 flow [2021-10-28 23:02:13,915 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 96 places, 114 transitions, 392 flow, removed 9 selfloop flow, removed 4 redundant places. [2021-10-28 23:02:13,918 INFO L242 Difference]: Finished difference. Result has 107 places, 77 transitions, 254 flow [2021-10-28 23:02:13,918 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=85, PETRI_DIFFERENCE_MINUEND_FLOW=180, PETRI_DIFFERENCE_MINUEND_PLACES=81, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=73, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=65, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=254, PETRI_PLACES=107, PETRI_TRANSITIONS=77} [2021-10-28 23:02:13,918 INFO L334 CegarLoopForPetriNet]: 88 programPoint places, 19 predicate places. [2021-10-28 23:02:13,919 INFO L470 AbstractCegarLoop]: Abstraction has has 107 places, 77 transitions, 254 flow [2021-10-28 23:02:13,919 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 65.0909090909091) internal successors, (716), 11 states have internal predecessors, (716), 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 23:02:13,919 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-28 23:02:13,920 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 23:02:13,920 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-10-28 23:02:13,920 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION (and 2 more)] === [2021-10-28 23:02:13,922 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:02:13,922 INFO L85 PathProgramCache]: Analyzing trace with hash 581602826, now seen corresponding path program 1 times [2021-10-28 23:02:13,922 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:02:13,922 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1558113684] [2021-10-28 23:02:13,922 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:02:13,923 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:02:14,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:02:14,247 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 23:02:14,247 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:02:14,247 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1558113684] [2021-10-28 23:02:14,248 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1558113684] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 23:02:14,248 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 23:02:14,248 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-10-28 23:02:14,248 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1187147503] [2021-10-28 23:02:14,249 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-28 23:02:14,249 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:02:14,250 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-28 23:02:14,253 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2021-10-28 23:02:14,254 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 67 out of 85 [2021-10-28 23:02:14,255 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 107 places, 77 transitions, 254 flow. Second operand has 8 states, 8 states have (on average 68.25) internal successors, (546), 8 states have internal predecessors, (546), 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 23:02:14,255 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-28 23:02:14,256 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 67 of 85 [2021-10-28 23:02:14,256 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-28 23:02:14,702 INFO L129 PetriNetUnfolder]: 102/364 cut-off events. [2021-10-28 23:02:14,703 INFO L130 PetriNetUnfolder]: For 1027/1030 co-relation queries the response was YES. [2021-10-28 23:02:14,705 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1125 conditions, 364 events. 102/364 cut-off events. For 1027/1030 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 1736 event pairs, 6 based on Foata normal form. 9/364 useless extension candidates. Maximal degree in co-relation 1060. Up to 106 conditions per place. [2021-10-28 23:02:14,708 INFO L132 encePairwiseOnDemand]: 76/85 looper letters, 20 selfloop transitions, 7 changer transitions 25/112 dead transitions. [2021-10-28 23:02:14,708 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 110 places, 112 transitions, 592 flow [2021-10-28 23:02:14,709 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-10-28 23:02:14,709 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2021-10-28 23:02:14,712 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 923 transitions. [2021-10-28 23:02:14,712 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8352941176470589 [2021-10-28 23:02:14,712 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 923 transitions. [2021-10-28 23:02:14,713 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 923 transitions. [2021-10-28 23:02:14,713 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-28 23:02:14,714 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 923 transitions. [2021-10-28 23:02:14,716 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 71.0) internal successors, (923), 13 states have internal predecessors, (923), 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 23:02:14,719 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 85.0) internal successors, (1190), 14 states have internal predecessors, (1190), 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 23:02:14,720 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 85.0) internal successors, (1190), 14 states have internal predecessors, (1190), 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 23:02:14,720 INFO L186 Difference]: Start difference. First operand has 107 places, 77 transitions, 254 flow. Second operand 13 states and 923 transitions. [2021-10-28 23:02:14,720 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 110 places, 112 transitions, 592 flow [2021-10-28 23:02:14,729 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 104 places, 112 transitions, 562 flow, removed 12 selfloop flow, removed 6 redundant places. [2021-10-28 23:02:14,734 INFO L242 Difference]: Finished difference. Result has 114 places, 80 transitions, 304 flow [2021-10-28 23:02:14,734 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=85, PETRI_DIFFERENCE_MINUEND_FLOW=242, PETRI_DIFFERENCE_MINUEND_PLACES=92, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=77, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=71, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=304, PETRI_PLACES=114, PETRI_TRANSITIONS=80} [2021-10-28 23:02:14,734 INFO L334 CegarLoopForPetriNet]: 88 programPoint places, 26 predicate places. [2021-10-28 23:02:14,735 INFO L470 AbstractCegarLoop]: Abstraction has has 114 places, 80 transitions, 304 flow [2021-10-28 23:02:14,735 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 68.25) internal successors, (546), 8 states have internal predecessors, (546), 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 23:02:14,736 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-28 23:02:14,736 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 23:02:14,736 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-10-28 23:02:14,736 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION (and 2 more)] === [2021-10-28 23:02:14,737 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:02:14,737 INFO L85 PathProgramCache]: Analyzing trace with hash -1565276866, now seen corresponding path program 2 times [2021-10-28 23:02:14,737 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:02:14,737 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1001252161] [2021-10-28 23:02:14,737 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:02:14,738 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:02:14,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:02:15,023 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 23:02:15,024 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:02:15,024 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1001252161] [2021-10-28 23:02:15,025 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1001252161] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 23:02:15,025 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 23:02:15,025 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-10-28 23:02:15,025 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2105426107] [2021-10-28 23:02:15,026 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-28 23:02:15,027 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:02:15,027 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-28 23:02:15,028 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2021-10-28 23:02:15,030 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 65 out of 85 [2021-10-28 23:02:15,031 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 114 places, 80 transitions, 304 flow. Second operand has 10 states, 10 states have (on average 66.2) internal successors, (662), 10 states have internal predecessors, (662), 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 23:02:15,031 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-28 23:02:15,031 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 65 of 85 [2021-10-28 23:02:15,031 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-28 23:02:15,342 INFO L129 PetriNetUnfolder]: 93/290 cut-off events. [2021-10-28 23:02:15,342 INFO L130 PetriNetUnfolder]: For 1583/1619 co-relation queries the response was YES. [2021-10-28 23:02:15,344 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1223 conditions, 290 events. 93/290 cut-off events. For 1583/1619 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 1097 event pairs, 22 based on Foata normal form. 13/297 useless extension candidates. Maximal degree in co-relation 1150. Up to 101 conditions per place. [2021-10-28 23:02:15,346 INFO L132 encePairwiseOnDemand]: 76/85 looper letters, 18 selfloop transitions, 7 changer transitions 19/102 dead transitions. [2021-10-28 23:02:15,347 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 116 places, 102 transitions, 606 flow [2021-10-28 23:02:15,347 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-10-28 23:02:15,347 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2021-10-28 23:02:15,350 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 821 transitions. [2021-10-28 23:02:15,350 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8049019607843138 [2021-10-28 23:02:15,350 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 821 transitions. [2021-10-28 23:02:15,351 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 821 transitions. [2021-10-28 23:02:15,351 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-28 23:02:15,351 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 821 transitions. [2021-10-28 23:02:15,354 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 68.41666666666667) internal successors, (821), 12 states have internal predecessors, (821), 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 23:02:15,358 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 85.0) internal successors, (1105), 13 states have internal predecessors, (1105), 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 23:02:15,360 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 85.0) internal successors, (1105), 13 states have internal predecessors, (1105), 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 23:02:15,360 INFO L186 Difference]: Start difference. First operand has 114 places, 80 transitions, 304 flow. Second operand 12 states and 821 transitions. [2021-10-28 23:02:15,360 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 116 places, 102 transitions, 606 flow [2021-10-28 23:02:15,367 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 109 places, 102 transitions, 555 flow, removed 22 selfloop flow, removed 7 redundant places. [2021-10-28 23:02:15,369 INFO L242 Difference]: Finished difference. Result has 116 places, 80 transitions, 309 flow [2021-10-28 23:02:15,370 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=85, PETRI_DIFFERENCE_MINUEND_FLOW=278, PETRI_DIFFERENCE_MINUEND_PLACES=98, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=80, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=73, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=309, PETRI_PLACES=116, PETRI_TRANSITIONS=80} [2021-10-28 23:02:15,370 INFO L334 CegarLoopForPetriNet]: 88 programPoint places, 28 predicate places. [2021-10-28 23:02:15,370 INFO L470 AbstractCegarLoop]: Abstraction has has 116 places, 80 transitions, 309 flow [2021-10-28 23:02:15,371 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 66.2) internal successors, (662), 10 states have internal predecessors, (662), 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 23:02:15,371 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-28 23:02:15,371 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 23:02:15,371 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-10-28 23:02:15,371 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION (and 2 more)] === [2021-10-28 23:02:15,372 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:02:15,372 INFO L85 PathProgramCache]: Analyzing trace with hash 149924735, now seen corresponding path program 1 times [2021-10-28 23:02:15,372 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:02:15,372 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1392872605] [2021-10-28 23:02:15,372 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:02:15,373 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:02:15,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:02:15,522 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 23:02:15,523 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:02:15,523 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1392872605] [2021-10-28 23:02:15,523 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1392872605] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 23:02:15,523 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 23:02:15,523 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-10-28 23:02:15,524 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2093555792] [2021-10-28 23:02:15,524 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-28 23:02:15,524 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:02:15,524 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-28 23:02:15,525 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-10-28 23:02:15,526 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 72 out of 85 [2021-10-28 23:02:15,526 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 116 places, 80 transitions, 309 flow. Second operand has 6 states, 6 states have (on average 73.33333333333333) internal successors, (440), 6 states have internal predecessors, (440), 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 23:02:15,527 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-28 23:02:15,527 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 72 of 85 [2021-10-28 23:02:15,527 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-28 23:02:15,688 INFO L129 PetriNetUnfolder]: 60/316 cut-off events. [2021-10-28 23:02:15,688 INFO L130 PetriNetUnfolder]: For 1616/1656 co-relation queries the response was YES. [2021-10-28 23:02:15,690 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1173 conditions, 316 events. 60/316 cut-off events. For 1616/1656 co-relation queries the response was YES. Maximal size of possible extension queue 29. Compared 1598 event pairs, 25 based on Foata normal form. 8/316 useless extension candidates. Maximal degree in co-relation 1099. Up to 49 conditions per place. [2021-10-28 23:02:15,693 INFO L132 encePairwiseOnDemand]: 79/85 looper letters, 13 selfloop transitions, 6 changer transitions 6/94 dead transitions. [2021-10-28 23:02:15,693 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 118 places, 94 transitions, 505 flow [2021-10-28 23:02:15,693 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-10-28 23:02:15,693 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-10-28 23:02:15,695 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 674 transitions. [2021-10-28 23:02:15,696 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8810457516339869 [2021-10-28 23:02:15,696 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 674 transitions. [2021-10-28 23:02:15,696 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 674 transitions. [2021-10-28 23:02:15,697 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-28 23:02:15,697 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 674 transitions. [2021-10-28 23:02:15,699 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 74.88888888888889) internal successors, (674), 9 states have internal predecessors, (674), 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 23:02:15,701 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 85.0) internal successors, (850), 10 states have internal predecessors, (850), 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 23:02:15,701 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 85.0) internal successors, (850), 10 states have internal predecessors, (850), 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 23:02:15,701 INFO L186 Difference]: Start difference. First operand has 116 places, 80 transitions, 309 flow. Second operand 9 states and 674 transitions. [2021-10-28 23:02:15,701 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 118 places, 94 transitions, 505 flow [2021-10-28 23:02:15,708 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 105 places, 94 transitions, 420 flow, removed 37 selfloop flow, removed 13 redundant places. [2021-10-28 23:02:15,710 INFO L242 Difference]: Finished difference. Result has 112 places, 83 transitions, 335 flow [2021-10-28 23:02:15,711 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=85, PETRI_DIFFERENCE_MINUEND_FLOW=272, PETRI_DIFFERENCE_MINUEND_PLACES=97, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=80, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=74, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=335, PETRI_PLACES=112, PETRI_TRANSITIONS=83} [2021-10-28 23:02:15,711 INFO L334 CegarLoopForPetriNet]: 88 programPoint places, 24 predicate places. [2021-10-28 23:02:15,711 INFO L470 AbstractCegarLoop]: Abstraction has has 112 places, 83 transitions, 335 flow [2021-10-28 23:02:15,711 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 73.33333333333333) internal successors, (440), 6 states have internal predecessors, (440), 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 23:02:15,712 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-28 23:02:15,712 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 23:02:15,712 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-10-28 23:02:15,712 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION (and 2 more)] === [2021-10-28 23:02:15,712 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:02:15,713 INFO L85 PathProgramCache]: Analyzing trace with hash -857863622, now seen corresponding path program 1 times [2021-10-28 23:02:15,713 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:02:15,713 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [389816536] [2021-10-28 23:02:15,713 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:02:15,713 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:02:15,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:02:15,982 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 23:02:15,982 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:02:15,982 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [389816536] [2021-10-28 23:02:15,982 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [389816536] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 23:02:15,982 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 23:02:15,982 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-10-28 23:02:15,983 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1700708876] [2021-10-28 23:02:15,983 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-28 23:02:15,983 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:02:15,984 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-28 23:02:15,984 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2021-10-28 23:02:15,985 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 64 out of 85 [2021-10-28 23:02:15,986 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 112 places, 83 transitions, 335 flow. Second operand has 10 states, 10 states have (on average 65.4) internal successors, (654), 10 states have internal predecessors, (654), 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 23:02:15,986 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-28 23:02:15,987 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 64 of 85 [2021-10-28 23:02:15,987 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-28 23:02:16,290 INFO L129 PetriNetUnfolder]: 136/429 cut-off events. [2021-10-28 23:02:16,290 INFO L130 PetriNetUnfolder]: For 2158/2231 co-relation queries the response was YES. [2021-10-28 23:02:16,293 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1796 conditions, 429 events. 136/429 cut-off events. For 2158/2231 co-relation queries the response was YES. Maximal size of possible extension queue 42. Compared 2139 event pairs, 58 based on Foata normal form. 13/428 useless extension candidates. Maximal degree in co-relation 1723. Up to 194 conditions per place. [2021-10-28 23:02:16,296 INFO L132 encePairwiseOnDemand]: 73/85 looper letters, 16 selfloop transitions, 11 changer transitions 17/101 dead transitions. [2021-10-28 23:02:16,296 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 118 places, 101 transitions, 601 flow [2021-10-28 23:02:16,297 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-10-28 23:02:16,297 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2021-10-28 23:02:16,299 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 676 transitions. [2021-10-28 23:02:16,300 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7952941176470588 [2021-10-28 23:02:16,300 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 676 transitions. [2021-10-28 23:02:16,300 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 676 transitions. [2021-10-28 23:02:16,301 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-28 23:02:16,301 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 676 transitions. [2021-10-28 23:02:16,303 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 67.6) internal successors, (676), 10 states have internal predecessors, (676), 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 23:02:16,305 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 85.0) internal successors, (935), 11 states have internal predecessors, (935), 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 23:02:16,306 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 85.0) internal successors, (935), 11 states have internal predecessors, (935), 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 23:02:16,306 INFO L186 Difference]: Start difference. First operand has 112 places, 83 transitions, 335 flow. Second operand 10 states and 676 transitions. [2021-10-28 23:02:16,306 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 118 places, 101 transitions, 601 flow [2021-10-28 23:02:16,344 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 114 places, 101 transitions, 566 flow, removed 16 selfloop flow, removed 4 redundant places. [2021-10-28 23:02:16,346 INFO L242 Difference]: Finished difference. Result has 118 places, 82 transitions, 337 flow [2021-10-28 23:02:16,347 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=85, PETRI_DIFFERENCE_MINUEND_FLOW=314, PETRI_DIFFERENCE_MINUEND_PLACES=105, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=83, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=72, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=337, PETRI_PLACES=118, PETRI_TRANSITIONS=82} [2021-10-28 23:02:16,347 INFO L334 CegarLoopForPetriNet]: 88 programPoint places, 30 predicate places. [2021-10-28 23:02:16,347 INFO L470 AbstractCegarLoop]: Abstraction has has 118 places, 82 transitions, 337 flow [2021-10-28 23:02:16,347 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 65.4) internal successors, (654), 10 states have internal predecessors, (654), 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 23:02:16,347 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-28 23:02:16,348 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 23:02:16,348 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-10-28 23:02:16,348 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION (and 2 more)] === [2021-10-28 23:02:16,348 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:02:16,348 INFO L85 PathProgramCache]: Analyzing trace with hash -191210822, now seen corresponding path program 2 times [2021-10-28 23:02:16,348 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:02:16,349 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [770799702] [2021-10-28 23:02:16,349 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:02:16,349 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:02:16,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:02:16,612 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 23:02:16,612 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:02:16,612 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [770799702] [2021-10-28 23:02:16,612 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [770799702] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 23:02:16,613 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 23:02:16,613 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-10-28 23:02:16,613 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1050084360] [2021-10-28 23:02:16,613 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-10-28 23:02:16,613 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:02:16,614 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-10-28 23:02:16,614 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2021-10-28 23:02:16,615 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 63 out of 85 [2021-10-28 23:02:16,616 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 118 places, 82 transitions, 337 flow. Second operand has 11 states, 11 states have (on average 64.36363636363636) internal successors, (708), 11 states have internal predecessors, (708), 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 23:02:16,617 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-28 23:02:16,617 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 63 of 85 [2021-10-28 23:02:16,617 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-28 23:02:16,976 INFO L129 PetriNetUnfolder]: 102/358 cut-off events. [2021-10-28 23:02:16,976 INFO L130 PetriNetUnfolder]: For 1944/2070 co-relation queries the response was YES. [2021-10-28 23:02:16,979 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1516 conditions, 358 events. 102/358 cut-off events. For 1944/2070 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 1653 event pairs, 41 based on Foata normal form. 17/363 useless extension candidates. Maximal degree in co-relation 1438. Up to 149 conditions per place. [2021-10-28 23:02:16,982 INFO L132 encePairwiseOnDemand]: 73/85 looper letters, 18 selfloop transitions, 11 changer transitions 20/105 dead transitions. [2021-10-28 23:02:16,982 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 124 places, 105 transitions, 689 flow [2021-10-28 23:02:16,983 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-10-28 23:02:16,983 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2021-10-28 23:02:16,985 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 866 transitions. [2021-10-28 23:02:16,986 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.783710407239819 [2021-10-28 23:02:16,986 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 866 transitions. [2021-10-28 23:02:16,986 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 866 transitions. [2021-10-28 23:02:16,987 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-28 23:02:16,987 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 866 transitions. [2021-10-28 23:02:16,990 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 66.61538461538461) internal successors, (866), 13 states have internal predecessors, (866), 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 23:02:16,993 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 85.0) internal successors, (1190), 14 states have internal predecessors, (1190), 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 23:02:16,993 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 85.0) internal successors, (1190), 14 states have internal predecessors, (1190), 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 23:02:16,993 INFO L186 Difference]: Start difference. First operand has 118 places, 82 transitions, 337 flow. Second operand 13 states and 866 transitions. [2021-10-28 23:02:16,993 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 124 places, 105 transitions, 689 flow [2021-10-28 23:02:17,001 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 113 places, 105 transitions, 628 flow, removed 21 selfloop flow, removed 11 redundant places. [2021-10-28 23:02:17,003 INFO L242 Difference]: Finished difference. Result has 120 places, 83 transitions, 359 flow [2021-10-28 23:02:17,003 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=85, PETRI_DIFFERENCE_MINUEND_FLOW=292, PETRI_DIFFERENCE_MINUEND_PLACES=101, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=82, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=71, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=359, PETRI_PLACES=120, PETRI_TRANSITIONS=83} [2021-10-28 23:02:17,003 INFO L334 CegarLoopForPetriNet]: 88 programPoint places, 32 predicate places. [2021-10-28 23:02:17,004 INFO L470 AbstractCegarLoop]: Abstraction has has 120 places, 83 transitions, 359 flow [2021-10-28 23:02:17,004 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 64.36363636363636) internal successors, (708), 11 states have internal predecessors, (708), 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 23:02:17,004 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-28 23:02:17,005 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 23:02:17,005 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-10-28 23:02:17,005 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION (and 2 more)] === [2021-10-28 23:02:17,005 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:02:17,006 INFO L85 PathProgramCache]: Analyzing trace with hash 1829531136, now seen corresponding path program 3 times [2021-10-28 23:02:17,006 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:02:17,006 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [472137144] [2021-10-28 23:02:17,006 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:02:17,006 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:02:17,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:02:17,209 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 23:02:17,209 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:02:17,209 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [472137144] [2021-10-28 23:02:17,210 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [472137144] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 23:02:17,210 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 23:02:17,210 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-10-28 23:02:17,210 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1413851726] [2021-10-28 23:02:17,211 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-10-28 23:02:17,211 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:02:17,211 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-10-28 23:02:17,212 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2021-10-28 23:02:17,213 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 64 out of 85 [2021-10-28 23:02:17,214 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 120 places, 83 transitions, 359 flow. Second operand has 11 states, 11 states have (on average 65.27272727272727) internal successors, (718), 11 states have internal predecessors, (718), 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 23:02:17,214 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-28 23:02:17,214 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 64 of 85 [2021-10-28 23:02:17,215 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-28 23:02:17,557 INFO L129 PetriNetUnfolder]: 102/353 cut-off events. [2021-10-28 23:02:17,557 INFO L130 PetriNetUnfolder]: For 3632/3755 co-relation queries the response was YES. [2021-10-28 23:02:17,560 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1849 conditions, 353 events. 102/353 cut-off events. For 3632/3755 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 1612 event pairs, 42 based on Foata normal form. 17/358 useless extension candidates. Maximal degree in co-relation 1771. Up to 150 conditions per place. [2021-10-28 23:02:17,563 INFO L132 encePairwiseOnDemand]: 73/85 looper letters, 17 selfloop transitions, 13 changer transitions 11/98 dead transitions. [2021-10-28 23:02:17,564 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 123 places, 98 transitions, 678 flow [2021-10-28 23:02:17,564 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-10-28 23:02:17,564 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2021-10-28 23:02:17,567 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 675 transitions. [2021-10-28 23:02:17,567 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7941176470588235 [2021-10-28 23:02:17,567 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 675 transitions. [2021-10-28 23:02:17,568 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 675 transitions. [2021-10-28 23:02:17,568 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-28 23:02:17,569 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 675 transitions. [2021-10-28 23:02:17,571 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 67.5) internal successors, (675), 10 states have internal predecessors, (675), 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 23:02:17,574 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 85.0) internal successors, (935), 11 states have internal predecessors, (935), 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 23:02:17,574 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 85.0) internal successors, (935), 11 states have internal predecessors, (935), 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 23:02:17,574 INFO L186 Difference]: Start difference. First operand has 120 places, 83 transitions, 359 flow. Second operand 10 states and 675 transitions. [2021-10-28 23:02:17,575 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 123 places, 98 transitions, 678 flow [2021-10-28 23:02:17,584 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 112 places, 98 transitions, 599 flow, removed 29 selfloop flow, removed 11 redundant places. [2021-10-28 23:02:17,587 INFO L242 Difference]: Finished difference. Result has 116 places, 86 transitions, 402 flow [2021-10-28 23:02:17,587 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=85, PETRI_DIFFERENCE_MINUEND_FLOW=314, PETRI_DIFFERENCE_MINUEND_PLACES=103, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=83, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=72, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=402, PETRI_PLACES=116, PETRI_TRANSITIONS=86} [2021-10-28 23:02:17,587 INFO L334 CegarLoopForPetriNet]: 88 programPoint places, 28 predicate places. [2021-10-28 23:02:17,587 INFO L470 AbstractCegarLoop]: Abstraction has has 116 places, 86 transitions, 402 flow [2021-10-28 23:02:17,588 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 65.27272727272727) internal successors, (718), 11 states have internal predecessors, (718), 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 23:02:17,588 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-28 23:02:17,588 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 23:02:17,589 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-10-28 23:02:17,589 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION (and 2 more)] === [2021-10-28 23:02:17,589 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:02:17,590 INFO L85 PathProgramCache]: Analyzing trace with hash 1961170440, now seen corresponding path program 4 times [2021-10-28 23:02:17,590 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:02:17,590 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1201661820] [2021-10-28 23:02:17,590 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:02:17,591 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:02:17,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:02:17,856 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 23:02:17,857 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:02:17,857 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1201661820] [2021-10-28 23:02:17,857 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1201661820] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 23:02:17,857 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 23:02:17,858 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-10-28 23:02:17,858 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1092450229] [2021-10-28 23:02:17,858 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-28 23:02:17,859 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:02:17,859 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-28 23:02:17,859 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2021-10-28 23:02:17,861 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 65 out of 85 [2021-10-28 23:02:17,862 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 116 places, 86 transitions, 402 flow. Second operand has 10 states, 10 states have (on average 66.3) internal successors, (663), 10 states have internal predecessors, (663), 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 23:02:17,862 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-28 23:02:17,863 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 65 of 85 [2021-10-28 23:02:17,863 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-28 23:02:18,445 INFO L129 PetriNetUnfolder]: 100/386 cut-off events. [2021-10-28 23:02:18,446 INFO L130 PetriNetUnfolder]: For 3498/3665 co-relation queries the response was YES. [2021-10-28 23:02:18,448 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1887 conditions, 386 events. 100/386 cut-off events. For 3498/3665 co-relation queries the response was YES. Maximal size of possible extension queue 35. Compared 1991 event pairs, 24 based on Foata normal form. 26/397 useless extension candidates. Maximal degree in co-relation 1812. Up to 118 conditions per place. [2021-10-28 23:02:18,451 INFO L132 encePairwiseOnDemand]: 74/85 looper letters, 19 selfloop transitions, 14 changer transitions 23/114 dead transitions. [2021-10-28 23:02:18,451 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 126 places, 114 transitions, 894 flow [2021-10-28 23:02:18,452 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-10-28 23:02:18,452 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2021-10-28 23:02:18,456 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 958 transitions. [2021-10-28 23:02:18,457 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8050420168067227 [2021-10-28 23:02:18,457 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 958 transitions. [2021-10-28 23:02:18,457 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 958 transitions. [2021-10-28 23:02:18,458 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-28 23:02:18,459 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 958 transitions. [2021-10-28 23:02:18,462 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 68.42857142857143) internal successors, (958), 14 states have internal predecessors, (958), 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 23:02:18,465 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 85.0) internal successors, (1275), 15 states have internal predecessors, (1275), 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 23:02:18,466 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 85.0) internal successors, (1275), 15 states have internal predecessors, (1275), 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 23:02:18,466 INFO L186 Difference]: Start difference. First operand has 116 places, 86 transitions, 402 flow. Second operand 14 states and 958 transitions. [2021-10-28 23:02:18,466 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 126 places, 114 transitions, 894 flow [2021-10-28 23:02:18,476 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 118 places, 114 transitions, 773 flow, removed 59 selfloop flow, removed 8 redundant places. [2021-10-28 23:02:18,478 INFO L242 Difference]: Finished difference. Result has 125 places, 85 transitions, 430 flow [2021-10-28 23:02:18,479 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=85, PETRI_DIFFERENCE_MINUEND_FLOW=351, PETRI_DIFFERENCE_MINUEND_PLACES=105, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=86, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=72, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=430, PETRI_PLACES=125, PETRI_TRANSITIONS=85} [2021-10-28 23:02:18,479 INFO L334 CegarLoopForPetriNet]: 88 programPoint places, 37 predicate places. [2021-10-28 23:02:18,480 INFO L470 AbstractCegarLoop]: Abstraction has has 125 places, 85 transitions, 430 flow [2021-10-28 23:02:18,480 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 66.3) internal successors, (663), 10 states have internal predecessors, (663), 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 23:02:18,480 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-28 23:02:18,481 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 23:02:18,481 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-10-28 23:02:18,481 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION (and 2 more)] === [2021-10-28 23:02:18,482 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:02:18,483 INFO L85 PathProgramCache]: Analyzing trace with hash 729552812, now seen corresponding path program 1 times [2021-10-28 23:02:18,483 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:02:18,484 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1254489322] [2021-10-28 23:02:18,484 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:02:18,485 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:02:18,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:02:18,864 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 23:02:18,864 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:02:18,864 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1254489322] [2021-10-28 23:02:18,865 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1254489322] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 23:02:18,865 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 23:02:18,865 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-10-28 23:02:18,865 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [584604545] [2021-10-28 23:02:18,865 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-10-28 23:02:18,866 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:02:18,866 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-10-28 23:02:18,866 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=171, Unknown=0, NotChecked=0, Total=210 [2021-10-28 23:02:18,868 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 58 out of 85 [2021-10-28 23:02:18,869 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 125 places, 85 transitions, 430 flow. Second operand has 15 states, 15 states have (on average 59.266666666666666) internal successors, (889), 15 states have internal predecessors, (889), 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 23:02:18,869 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-28 23:02:18,869 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 58 of 85 [2021-10-28 23:02:18,869 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-28 23:02:19,656 INFO L129 PetriNetUnfolder]: 262/802 cut-off events. [2021-10-28 23:02:19,656 INFO L130 PetriNetUnfolder]: For 6570/6590 co-relation queries the response was YES. [2021-10-28 23:02:19,661 INFO L84 FinitePrefix]: Finished finitePrefix Result has 3236 conditions, 802 events. 262/802 cut-off events. For 6570/6590 co-relation queries the response was YES. Maximal size of possible extension queue 56. Compared 5254 event pairs, 21 based on Foata normal form. 17/815 useless extension candidates. Maximal degree in co-relation 3154. Up to 254 conditions per place. [2021-10-28 23:02:19,667 INFO L132 encePairwiseOnDemand]: 70/85 looper letters, 35 selfloop transitions, 11 changer transitions 54/151 dead transitions. [2021-10-28 23:02:19,667 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 144 places, 151 transitions, 1292 flow [2021-10-28 23:02:19,667 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-10-28 23:02:19,668 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2021-10-28 23:02:19,670 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 1604 transitions. [2021-10-28 23:02:19,671 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7257918552036199 [2021-10-28 23:02:19,672 INFO L72 ComplementDD]: Start complementDD. Operand 26 states and 1604 transitions. [2021-10-28 23:02:19,672 INFO L73 IsDeterministic]: Start isDeterministic. Operand 26 states and 1604 transitions. [2021-10-28 23:02:19,674 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-28 23:02:19,674 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 26 states and 1604 transitions. [2021-10-28 23:02:19,682 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 27 states, 26 states have (on average 61.69230769230769) internal successors, (1604), 26 states have internal predecessors, (1604), 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 23:02:19,689 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 27 states, 27 states have (on average 85.0) internal successors, (2295), 27 states have internal predecessors, (2295), 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 23:02:19,690 INFO L81 ComplementDD]: Finished complementDD. Result has 27 states, 27 states have (on average 85.0) internal successors, (2295), 27 states have internal predecessors, (2295), 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 23:02:19,690 INFO L186 Difference]: Start difference. First operand has 125 places, 85 transitions, 430 flow. Second operand 26 states and 1604 transitions. [2021-10-28 23:02:19,691 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 144 places, 151 transitions, 1292 flow [2021-10-28 23:02:19,707 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 131 places, 151 transitions, 1033 flow, removed 121 selfloop flow, removed 13 redundant places. [2021-10-28 23:02:19,710 INFO L242 Difference]: Finished difference. Result has 150 places, 83 transitions, 453 flow [2021-10-28 23:02:19,711 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=85, PETRI_DIFFERENCE_MINUEND_FLOW=377, PETRI_DIFFERENCE_MINUEND_PLACES=106, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=85, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=74, PETRI_DIFFERENCE_SUBTRAHEND_STATES=26, PETRI_FLOW=453, PETRI_PLACES=150, PETRI_TRANSITIONS=83} [2021-10-28 23:02:19,711 INFO L334 CegarLoopForPetriNet]: 88 programPoint places, 62 predicate places. [2021-10-28 23:02:19,711 INFO L470 AbstractCegarLoop]: Abstraction has has 150 places, 83 transitions, 453 flow [2021-10-28 23:02:19,712 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 59.266666666666666) internal successors, (889), 15 states have internal predecessors, (889), 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 23:02:19,712 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-28 23:02:19,712 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 23:02:19,712 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-10-28 23:02:19,713 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION (and 2 more)] === [2021-10-28 23:02:19,713 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:02:19,713 INFO L85 PathProgramCache]: Analyzing trace with hash -673174030, now seen corresponding path program 2 times [2021-10-28 23:02:19,713 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:02:19,714 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1946790601] [2021-10-28 23:02:19,714 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:02:19,714 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:02:19,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:02:20,014 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 23:02:20,014 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:02:20,014 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1946790601] [2021-10-28 23:02:20,014 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1946790601] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 23:02:20,014 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 23:02:20,015 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2021-10-28 23:02:20,015 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1317294013] [2021-10-28 23:02:20,015 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-10-28 23:02:20,015 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:02:20,016 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-10-28 23:02:20,016 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2021-10-28 23:02:20,018 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 63 out of 85 [2021-10-28 23:02:20,019 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 150 places, 83 transitions, 453 flow. Second operand has 13 states, 13 states have (on average 64.23076923076923) internal successors, (835), 13 states have internal predecessors, (835), 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 23:02:20,019 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-28 23:02:20,019 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 63 of 85 [2021-10-28 23:02:20,019 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-28 23:02:20,458 INFO L129 PetriNetUnfolder]: 77/325 cut-off events. [2021-10-28 23:02:20,458 INFO L130 PetriNetUnfolder]: For 5126/5269 co-relation queries the response was YES. [2021-10-28 23:02:20,461 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1817 conditions, 325 events. 77/325 cut-off events. For 5126/5269 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 1575 event pairs, 37 based on Foata normal form. 40/352 useless extension candidates. Maximal degree in co-relation 1722. Up to 120 conditions per place. [2021-10-28 23:02:20,464 INFO L132 encePairwiseOnDemand]: 74/85 looper letters, 17 selfloop transitions, 5 changer transitions 15/95 dead transitions. [2021-10-28 23:02:20,465 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 143 places, 95 transitions, 779 flow [2021-10-28 23:02:20,465 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-10-28 23:02:20,465 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2021-10-28 23:02:20,467 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 917 transitions. [2021-10-28 23:02:20,468 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7705882352941177 [2021-10-28 23:02:20,468 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 917 transitions. [2021-10-28 23:02:20,468 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 917 transitions. [2021-10-28 23:02:20,469 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-28 23:02:20,469 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 917 transitions. [2021-10-28 23:02:20,471 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 65.5) internal successors, (917), 14 states have internal predecessors, (917), 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 23:02:20,474 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 85.0) internal successors, (1275), 15 states have internal predecessors, (1275), 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 23:02:20,475 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 85.0) internal successors, (1275), 15 states have internal predecessors, (1275), 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 23:02:20,475 INFO L186 Difference]: Start difference. First operand has 150 places, 83 transitions, 453 flow. Second operand 14 states and 917 transitions. [2021-10-28 23:02:20,475 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 143 places, 95 transitions, 779 flow [2021-10-28 23:02:20,492 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 125 places, 95 transitions, 621 flow, removed 71 selfloop flow, removed 18 redundant places. [2021-10-28 23:02:20,494 INFO L242 Difference]: Finished difference. Result has 132 places, 79 transitions, 387 flow [2021-10-28 23:02:20,495 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=85, PETRI_DIFFERENCE_MINUEND_FLOW=389, PETRI_DIFFERENCE_MINUEND_PLACES=112, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=83, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=78, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=387, PETRI_PLACES=132, PETRI_TRANSITIONS=79} [2021-10-28 23:02:20,495 INFO L334 CegarLoopForPetriNet]: 88 programPoint places, 44 predicate places. [2021-10-28 23:02:20,495 INFO L470 AbstractCegarLoop]: Abstraction has has 132 places, 79 transitions, 387 flow [2021-10-28 23:02:20,496 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 64.23076923076923) internal successors, (835), 13 states have internal predecessors, (835), 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 23:02:20,496 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-28 23:02:20,496 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 23:02:20,496 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-10-28 23:02:20,497 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION (and 2 more)] === [2021-10-28 23:02:20,497 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:02:20,497 INFO L85 PathProgramCache]: Analyzing trace with hash 1228993504, now seen corresponding path program 3 times [2021-10-28 23:02:20,497 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:02:20,498 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [643198829] [2021-10-28 23:02:20,498 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:02:20,498 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:02:20,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:02:20,786 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 23:02:20,787 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:02:20,787 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [643198829] [2021-10-28 23:02:20,787 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [643198829] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 23:02:20,787 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 23:02:20,787 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-10-28 23:02:20,787 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1724003625] [2021-10-28 23:02:20,788 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-10-28 23:02:20,788 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:02:20,789 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-10-28 23:02:20,789 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2021-10-28 23:02:20,790 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 63 out of 85 [2021-10-28 23:02:20,791 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 132 places, 79 transitions, 387 flow. Second operand has 11 states, 11 states have (on average 64.45454545454545) internal successors, (709), 11 states have internal predecessors, (709), 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 23:02:20,791 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-28 23:02:20,792 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 63 of 85 [2021-10-28 23:02:20,792 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-28 23:02:21,103 INFO L129 PetriNetUnfolder]: 80/384 cut-off events. [2021-10-28 23:02:21,103 INFO L130 PetriNetUnfolder]: For 3504/3618 co-relation queries the response was YES. [2021-10-28 23:02:21,106 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1724 conditions, 384 events. 80/384 cut-off events. For 3504/3618 co-relation queries the response was YES. Maximal size of possible extension queue 35. Compared 2155 event pairs, 16 based on Foata normal form. 29/403 useless extension candidates. Maximal degree in co-relation 1634. Up to 87 conditions per place. [2021-10-28 23:02:21,109 INFO L132 encePairwiseOnDemand]: 75/85 looper letters, 19 selfloop transitions, 8 changer transitions 10/95 dead transitions. [2021-10-28 23:02:21,109 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 133 places, 95 transitions, 689 flow [2021-10-28 23:02:21,109 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-10-28 23:02:21,110 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2021-10-28 23:02:21,111 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 856 transitions. [2021-10-28 23:02:21,111 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7746606334841629 [2021-10-28 23:02:21,112 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 856 transitions. [2021-10-28 23:02:21,112 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 856 transitions. [2021-10-28 23:02:21,112 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-28 23:02:21,113 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 856 transitions. [2021-10-28 23:02:21,115 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 65.84615384615384) internal successors, (856), 13 states have internal predecessors, (856), 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 23:02:21,117 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 85.0) internal successors, (1190), 14 states have internal predecessors, (1190), 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 23:02:21,117 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 85.0) internal successors, (1190), 14 states have internal predecessors, (1190), 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 23:02:21,118 INFO L186 Difference]: Start difference. First operand has 132 places, 79 transitions, 387 flow. Second operand 13 states and 856 transitions. [2021-10-28 23:02:21,118 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 133 places, 95 transitions, 689 flow [2021-10-28 23:02:21,130 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 115 places, 95 transitions, 562 flow, removed 55 selfloop flow, removed 18 redundant places. [2021-10-28 23:02:21,132 INFO L242 Difference]: Finished difference. Result has 122 places, 79 transitions, 362 flow [2021-10-28 23:02:21,133 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=85, PETRI_DIFFERENCE_MINUEND_FLOW=328, PETRI_DIFFERENCE_MINUEND_PLACES=103, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=79, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=71, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=362, PETRI_PLACES=122, PETRI_TRANSITIONS=79} [2021-10-28 23:02:21,133 INFO L334 CegarLoopForPetriNet]: 88 programPoint places, 34 predicate places. [2021-10-28 23:02:21,133 INFO L470 AbstractCegarLoop]: Abstraction has has 122 places, 79 transitions, 362 flow [2021-10-28 23:02:21,134 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 64.45454545454545) internal successors, (709), 11 states have internal predecessors, (709), 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 23:02:21,134 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-28 23:02:21,134 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 23:02:21,134 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-10-28 23:02:21,135 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION (and 2 more)] === [2021-10-28 23:02:21,135 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:02:21,135 INFO L85 PathProgramCache]: Analyzing trace with hash -813929410, now seen corresponding path program 1 times [2021-10-28 23:02:21,135 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:02:21,135 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1683403535] [2021-10-28 23:02:21,136 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:02:21,136 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:02:21,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:02:21,227 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 23:02:21,227 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:02:21,227 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1683403535] [2021-10-28 23:02:21,228 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1683403535] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 23:02:21,228 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 23:02:21,228 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-10-28 23:02:21,228 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1220592840] [2021-10-28 23:02:21,229 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-28 23:02:21,229 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:02:21,229 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-28 23:02:21,229 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-10-28 23:02:21,230 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 72 out of 85 [2021-10-28 23:02:21,231 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 122 places, 79 transitions, 362 flow. Second operand has 6 states, 6 states have (on average 73.16666666666667) internal successors, (439), 6 states have internal predecessors, (439), 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 23:02:21,231 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-28 23:02:21,231 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 72 of 85 [2021-10-28 23:02:21,231 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-28 23:02:21,409 INFO L129 PetriNetUnfolder]: 157/586 cut-off events. [2021-10-28 23:02:21,409 INFO L130 PetriNetUnfolder]: For 3929/3987 co-relation queries the response was YES. [2021-10-28 23:02:21,413 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2061 conditions, 586 events. 157/586 cut-off events. For 3929/3987 co-relation queries the response was YES. Maximal size of possible extension queue 82. Compared 4129 event pairs, 10 based on Foata normal form. 35/575 useless extension candidates. Maximal degree in co-relation 1983. Up to 173 conditions per place. [2021-10-28 23:02:21,415 INFO L132 encePairwiseOnDemand]: 76/85 looper letters, 13 selfloop transitions, 12 changer transitions 10/100 dead transitions. [2021-10-28 23:02:21,415 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 125 places, 100 transitions, 574 flow [2021-10-28 23:02:21,416 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-10-28 23:02:21,416 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2021-10-28 23:02:21,417 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 755 transitions. [2021-10-28 23:02:21,417 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.888235294117647 [2021-10-28 23:02:21,418 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 755 transitions. [2021-10-28 23:02:21,418 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 755 transitions. [2021-10-28 23:02:21,418 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-28 23:02:21,418 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 755 transitions. [2021-10-28 23:02:21,420 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 75.5) internal successors, (755), 10 states have internal predecessors, (755), 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 23:02:21,422 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 85.0) internal successors, (935), 11 states have internal predecessors, (935), 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 23:02:21,422 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 85.0) internal successors, (935), 11 states have internal predecessors, (935), 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 23:02:21,423 INFO L186 Difference]: Start difference. First operand has 122 places, 79 transitions, 362 flow. Second operand 10 states and 755 transitions. [2021-10-28 23:02:21,423 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 125 places, 100 transitions, 574 flow [2021-10-28 23:02:21,431 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 109 places, 100 transitions, 516 flow, removed 22 selfloop flow, removed 16 redundant places. [2021-10-28 23:02:21,433 INFO L242 Difference]: Finished difference. Result has 113 places, 85 transitions, 369 flow [2021-10-28 23:02:21,433 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=85, PETRI_DIFFERENCE_MINUEND_FLOW=312, PETRI_DIFFERENCE_MINUEND_PLACES=100, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=79, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=71, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=369, PETRI_PLACES=113, PETRI_TRANSITIONS=85} [2021-10-28 23:02:21,433 INFO L334 CegarLoopForPetriNet]: 88 programPoint places, 25 predicate places. [2021-10-28 23:02:21,434 INFO L470 AbstractCegarLoop]: Abstraction has has 113 places, 85 transitions, 369 flow [2021-10-28 23:02:21,434 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 73.16666666666667) internal successors, (439), 6 states have internal predecessors, (439), 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 23:02:21,434 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-28 23:02:21,434 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 23:02:21,435 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-10-28 23:02:21,435 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION (and 2 more)] === [2021-10-28 23:02:21,435 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:02:21,436 INFO L85 PathProgramCache]: Analyzing trace with hash 907903445, now seen corresponding path program 1 times [2021-10-28 23:02:21,436 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:02:21,436 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1612145997] [2021-10-28 23:02:21,436 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:02:21,436 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:02:21,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:02:21,530 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:02:21,530 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:02:21,531 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1612145997] [2021-10-28 23:02:21,531 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1612145997] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 23:02:21,531 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 23:02:21,531 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-10-28 23:02:21,531 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1449322147] [2021-10-28 23:02:21,532 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-28 23:02:21,532 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:02:21,533 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-28 23:02:21,533 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-10-28 23:02:21,534 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 72 out of 85 [2021-10-28 23:02:21,535 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 113 places, 85 transitions, 369 flow. Second operand has 7 states, 7 states have (on average 73.14285714285714) internal successors, (512), 7 states have internal predecessors, (512), 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 23:02:21,535 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-28 23:02:21,537 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 72 of 85 [2021-10-28 23:02:21,537 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-28 23:02:21,686 INFO L129 PetriNetUnfolder]: 51/261 cut-off events. [2021-10-28 23:02:21,687 INFO L130 PetriNetUnfolder]: For 1251/1329 co-relation queries the response was YES. [2021-10-28 23:02:21,688 INFO L84 FinitePrefix]: Finished finitePrefix Result has 881 conditions, 261 events. 51/261 cut-off events. For 1251/1329 co-relation queries the response was YES. Maximal size of possible extension queue 37. Compared 1374 event pairs, 0 based on Foata normal form. 39/291 useless extension candidates. Maximal degree in co-relation 811. Up to 68 conditions per place. [2021-10-28 23:02:21,689 INFO L132 encePairwiseOnDemand]: 76/85 looper letters, 11 selfloop transitions, 15 changer transitions 14/103 dead transitions. [2021-10-28 23:02:21,689 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 125 places, 103 transitions, 553 flow [2021-10-28 23:02:21,690 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-10-28 23:02:21,690 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2021-10-28 23:02:21,691 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 970 transitions. [2021-10-28 23:02:21,692 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8778280542986425 [2021-10-28 23:02:21,692 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 970 transitions. [2021-10-28 23:02:21,692 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 970 transitions. [2021-10-28 23:02:21,693 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-28 23:02:21,693 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 970 transitions. [2021-10-28 23:02:21,695 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 74.61538461538461) internal successors, (970), 13 states have internal predecessors, (970), 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 23:02:21,698 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 85.0) internal successors, (1190), 14 states have internal predecessors, (1190), 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 23:02:21,698 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 85.0) internal successors, (1190), 14 states have internal predecessors, (1190), 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 23:02:21,699 INFO L186 Difference]: Start difference. First operand has 113 places, 85 transitions, 369 flow. Second operand 13 states and 970 transitions. [2021-10-28 23:02:21,699 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 125 places, 103 transitions, 553 flow [2021-10-28 23:02:21,705 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 113 places, 103 transitions, 435 flow, removed 50 selfloop flow, removed 12 redundant places. [2021-10-28 23:02:21,707 INFO L242 Difference]: Finished difference. Result has 120 places, 86 transitions, 354 flow [2021-10-28 23:02:21,707 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=85, PETRI_DIFFERENCE_MINUEND_FLOW=287, PETRI_DIFFERENCE_MINUEND_PLACES=101, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=85, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=70, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=354, PETRI_PLACES=120, PETRI_TRANSITIONS=86} [2021-10-28 23:02:21,708 INFO L334 CegarLoopForPetriNet]: 88 programPoint places, 32 predicate places. [2021-10-28 23:02:21,708 INFO L470 AbstractCegarLoop]: Abstraction has has 120 places, 86 transitions, 354 flow [2021-10-28 23:02:21,708 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 73.14285714285714) internal successors, (512), 7 states have internal predecessors, (512), 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 23:02:21,709 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-28 23:02:21,709 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 23:02:21,709 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-10-28 23:02:21,709 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION (and 2 more)] === [2021-10-28 23:02:21,710 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:02:21,710 INFO L85 PathProgramCache]: Analyzing trace with hash 587720075, now seen corresponding path program 1 times [2021-10-28 23:02:21,710 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:02:21,710 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2145169053] [2021-10-28 23:02:21,710 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:02:21,711 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:02:21,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 23:02:21,758 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 23:02:21,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 23:02:21,859 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 23:02:21,861 INFO L627 BasicCegarLoop]: Counterexample is feasible [2021-10-28 23:02:21,863 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-28 23:02:21,864 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location P1Err0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-28 23:02:21,865 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATION [2021-10-28 23:02:21,865 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATION [2021-10-28 23:02:21,865 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location P1Err0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-28 23:02:21,865 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-10-28 23:02:21,868 INFO L731 BasicCegarLoop]: Path program histogram: [4, 3, 2, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 23:02:21,873 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2021-10-28 23:02:21,873 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-28 23:02:22,027 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.10 11:02:22 BasicIcfg [2021-10-28 23:02:22,027 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-28 23:02:22,028 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-28 23:02:22,028 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-28 23:02:22,028 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-28 23:02:22,028 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 11:02:11" (3/4) ... [2021-10-28 23:02:22,031 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2021-10-28 23:02:22,172 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d0c6b66-34da-45f2-9633-42efff4dc68f/bin/uautomizer-GMMbpWq8iD/witness.graphml [2021-10-28 23:02:22,173 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-28 23:02:22,174 INFO L168 Benchmark]: Toolchain (without parser) took 13164.71 ms. Allocated memory was 153.1 MB in the beginning and 283.1 MB in the end (delta: 130.0 MB). Free memory was 118.5 MB in the beginning and 132.7 MB in the end (delta: -14.2 MB). Peak memory consumption was 115.2 MB. Max. memory is 16.1 GB. [2021-10-28 23:02:22,175 INFO L168 Benchmark]: CDTParser took 0.13 ms. Allocated memory is still 92.3 MB. Free memory is still 51.7 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-28 23:02:22,175 INFO L168 Benchmark]: CACSL2BoogieTranslator took 721.86 ms. Allocated memory is still 153.1 MB. Free memory was 118.5 MB in the beginning and 115.0 MB in the end (delta: 3.5 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-10-28 23:02:22,176 INFO L168 Benchmark]: Boogie Procedure Inliner took 94.47 ms. Allocated memory is still 153.1 MB. Free memory was 115.0 MB in the beginning and 112.5 MB in the end (delta: 2.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-28 23:02:22,176 INFO L168 Benchmark]: Boogie Preprocessor took 71.00 ms. Allocated memory is still 153.1 MB. Free memory was 112.5 MB in the beginning and 110.3 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-28 23:02:22,177 INFO L168 Benchmark]: RCFGBuilder took 1888.74 ms. Allocated memory is still 153.1 MB. Free memory was 110.3 MB in the beginning and 79.5 MB in the end (delta: 30.9 MB). Peak memory consumption was 53.3 MB. Max. memory is 16.1 GB. [2021-10-28 23:02:22,177 INFO L168 Benchmark]: TraceAbstraction took 10235.59 ms. Allocated memory was 153.1 MB in the beginning and 283.1 MB in the end (delta: 130.0 MB). Free memory was 78.6 MB in the beginning and 151.6 MB in the end (delta: -73.0 MB). Peak memory consumption was 55.8 MB. Max. memory is 16.1 GB. [2021-10-28 23:02:22,177 INFO L168 Benchmark]: Witness Printer took 145.07 ms. Allocated memory is still 283.1 MB. Free memory was 151.6 MB in the beginning and 132.7 MB in the end (delta: 18.9 MB). Peak memory consumption was 18.9 MB. Max. memory is 16.1 GB. [2021-10-28 23:02:22,180 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.13 ms. Allocated memory is still 92.3 MB. Free memory is still 51.7 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 721.86 ms. Allocated memory is still 153.1 MB. Free memory was 118.5 MB in the beginning and 115.0 MB in the end (delta: 3.5 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 94.47 ms. Allocated memory is still 153.1 MB. Free memory was 115.0 MB in the beginning and 112.5 MB in the end (delta: 2.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 71.00 ms. Allocated memory is still 153.1 MB. Free memory was 112.5 MB in the beginning and 110.3 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 1888.74 ms. Allocated memory is still 153.1 MB. Free memory was 110.3 MB in the beginning and 79.5 MB in the end (delta: 30.9 MB). Peak memory consumption was 53.3 MB. Max. memory is 16.1 GB. * TraceAbstraction took 10235.59 ms. Allocated memory was 153.1 MB in the beginning and 283.1 MB in the end (delta: 130.0 MB). Free memory was 78.6 MB in the beginning and 151.6 MB in the end (delta: -73.0 MB). Peak memory consumption was 55.8 MB. Max. memory is 16.1 GB. * Witness Printer took 145.07 ms. Allocated memory is still 283.1 MB. Free memory was 151.6 MB in the beginning and 132.7 MB in the end (delta: 18.9 MB). Peak memory consumption was 18.9 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 - CounterExampleResult [Line: 18]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L708] 0 int __unbuffered_cnt = 0; VAL [__unbuffered_cnt=0] [L709] 0 _Bool main$tmp_guard0; VAL [__unbuffered_cnt=0, main$tmp_guard0=0] [L710] 0 _Bool main$tmp_guard1; VAL [__unbuffered_cnt=0, main$tmp_guard0=0, main$tmp_guard1=0] [L712] 0 int x = 0; VAL [__unbuffered_cnt=0, main$tmp_guard0=0, main$tmp_guard1=0, x=0] [L713] 0 _Bool x$flush_delayed; VAL [__unbuffered_cnt=0, main$tmp_guard0=0, main$tmp_guard1=0, x=0, x$flush_delayed=0] [L714] 0 int x$mem_tmp; VAL [__unbuffered_cnt=0, main$tmp_guard0=0, main$tmp_guard1=0, x=0, x$flush_delayed=0, x$mem_tmp=0] [L715] 0 _Bool x$r_buff0_thd0; VAL [__unbuffered_cnt=0, main$tmp_guard0=0, main$tmp_guard1=0, x=0, x$flush_delayed=0, x$mem_tmp=0, x$r_buff0_thd0=0] [L716] 0 _Bool x$r_buff0_thd1; VAL [__unbuffered_cnt=0, main$tmp_guard0=0, main$tmp_guard1=0, x=0, x$flush_delayed=0, x$mem_tmp=0, x$r_buff0_thd0=0, x$r_buff0_thd1=0] [L717] 0 _Bool x$r_buff0_thd2; VAL [__unbuffered_cnt=0, main$tmp_guard0=0, main$tmp_guard1=0, x=0, x$flush_delayed=0, x$mem_tmp=0, x$r_buff0_thd0=0, x$r_buff0_thd1=0, x$r_buff0_thd2=0] [L718] 0 _Bool x$r_buff1_thd0; VAL [__unbuffered_cnt=0, main$tmp_guard0=0, main$tmp_guard1=0, x=0, x$flush_delayed=0, x$mem_tmp=0, x$r_buff0_thd0=0, x$r_buff0_thd1=0, x$r_buff0_thd2=0, x$r_buff1_thd0=0] [L719] 0 _Bool x$r_buff1_thd1; VAL [__unbuffered_cnt=0, main$tmp_guard0=0, main$tmp_guard1=0, x=0, x$flush_delayed=0, x$mem_tmp=0, x$r_buff0_thd0=0, x$r_buff0_thd1=0, x$r_buff0_thd2=0, x$r_buff1_thd0=0, x$r_buff1_thd1=0] [L720] 0 _Bool x$r_buff1_thd2; VAL [__unbuffered_cnt=0, main$tmp_guard0=0, main$tmp_guard1=0, x=0, x$flush_delayed=0, x$mem_tmp=0, x$r_buff0_thd0=0, x$r_buff0_thd1=0, x$r_buff0_thd2=0, x$r_buff1_thd0=0, x$r_buff1_thd1=0, x$r_buff1_thd2=0] [L721] 0 _Bool x$read_delayed; VAL [__unbuffered_cnt=0, main$tmp_guard0=0, main$tmp_guard1=0, x=0, x$flush_delayed=0, x$mem_tmp=0, x$r_buff0_thd0=0, x$r_buff0_thd1=0, x$r_buff0_thd2=0, x$r_buff1_thd0=0, x$r_buff1_thd1=0, x$r_buff1_thd2=0, x$read_delayed=0] [L722] 0 int *x$read_delayed_var; VAL [__unbuffered_cnt=0, main$tmp_guard0=0, main$tmp_guard1=0, x=0, x$flush_delayed=0, x$mem_tmp=0, x$r_buff0_thd0=0, x$r_buff0_thd1=0, x$r_buff0_thd2=0, x$r_buff1_thd0=0, x$r_buff1_thd1=0, x$r_buff1_thd2=0, x$read_delayed=0, x$read_delayed_var={0:0}] [L723] 0 int x$w_buff0; VAL [__unbuffered_cnt=0, main$tmp_guard0=0, main$tmp_guard1=0, x=0, x$flush_delayed=0, x$mem_tmp=0, x$r_buff0_thd0=0, x$r_buff0_thd1=0, x$r_buff0_thd2=0, x$r_buff1_thd0=0, x$r_buff1_thd1=0, x$r_buff1_thd2=0, x$read_delayed=0, x$read_delayed_var={0:0}, x$w_buff0=0] [L724] 0 _Bool x$w_buff0_used; VAL [__unbuffered_cnt=0, main$tmp_guard0=0, main$tmp_guard1=0, x=0, x$flush_delayed=0, x$mem_tmp=0, x$r_buff0_thd0=0, x$r_buff0_thd1=0, x$r_buff0_thd2=0, x$r_buff1_thd0=0, x$r_buff1_thd1=0, x$r_buff1_thd2=0, x$read_delayed=0, x$read_delayed_var={0:0}, x$w_buff0=0, x$w_buff0_used=0] [L725] 0 int x$w_buff1; VAL [__unbuffered_cnt=0, main$tmp_guard0=0, main$tmp_guard1=0, x=0, x$flush_delayed=0, x$mem_tmp=0, x$r_buff0_thd0=0, x$r_buff0_thd1=0, x$r_buff0_thd2=0, x$r_buff1_thd0=0, x$r_buff1_thd1=0, x$r_buff1_thd2=0, x$read_delayed=0, x$read_delayed_var={0:0}, x$w_buff0=0, x$w_buff0_used=0, x$w_buff1=0] [L726] 0 _Bool x$w_buff1_used; VAL [__unbuffered_cnt=0, main$tmp_guard0=0, main$tmp_guard1=0, x=0, x$flush_delayed=0, x$mem_tmp=0, x$r_buff0_thd0=0, x$r_buff0_thd1=0, x$r_buff0_thd2=0, x$r_buff1_thd0=0, x$r_buff1_thd1=0, x$r_buff1_thd2=0, x$read_delayed=0, x$read_delayed_var={0:0}, x$w_buff0=0, x$w_buff0_used=0, x$w_buff1=0, x$w_buff1_used=0] [L728] 0 int y = 0; VAL [__unbuffered_cnt=0, main$tmp_guard0=0, main$tmp_guard1=0, x=0, x$flush_delayed=0, x$mem_tmp=0, x$r_buff0_thd0=0, x$r_buff0_thd1=0, x$r_buff0_thd2=0, x$r_buff1_thd0=0, x$r_buff1_thd1=0, x$r_buff1_thd2=0, x$read_delayed=0, x$read_delayed_var={0:0}, x$w_buff0=0, x$w_buff0_used=0, x$w_buff1=0, x$w_buff1_used=0, y=0] [L729] 0 _Bool weak$$choice0; VAL [__unbuffered_cnt=0, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=0, x=0, x$flush_delayed=0, x$mem_tmp=0, x$r_buff0_thd0=0, x$r_buff0_thd1=0, x$r_buff0_thd2=0, x$r_buff1_thd0=0, x$r_buff1_thd1=0, x$r_buff1_thd2=0, x$read_delayed=0, x$read_delayed_var={0:0}, x$w_buff0=0, x$w_buff0_used=0, x$w_buff1=0, x$w_buff1_used=0, y=0] [L730] 0 _Bool weak$$choice2; VAL [__unbuffered_cnt=0, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=0, weak$$choice2=0, x=0, x$flush_delayed=0, x$mem_tmp=0, x$r_buff0_thd0=0, x$r_buff0_thd1=0, x$r_buff0_thd2=0, x$r_buff1_thd0=0, x$r_buff1_thd1=0, x$r_buff1_thd2=0, x$read_delayed=0, x$read_delayed_var={0:0}, x$w_buff0=0, x$w_buff0_used=0, x$w_buff1=0, x$w_buff1_used=0, y=0] [L790] 0 pthread_t t2475; VAL [__unbuffered_cnt=0, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=0, weak$$choice2=0, x=0, x$flush_delayed=0, x$mem_tmp=0, x$r_buff0_thd0=0, x$r_buff0_thd1=0, x$r_buff0_thd2=0, x$r_buff1_thd0=0, x$r_buff1_thd1=0, x$r_buff1_thd2=0, x$read_delayed=0, x$read_delayed_var={0:0}, x$w_buff0=0, x$w_buff0_used=0, x$w_buff1=0, x$w_buff1_used=0, y=0] [L791] FCALL, FORK 0 pthread_create(&t2475, ((void *)0), P0, ((void *)0)) VAL [__unbuffered_cnt=0, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=0, weak$$choice2=0, x=0, x$flush_delayed=0, x$mem_tmp=0, x$r_buff0_thd0=0, x$r_buff0_thd1=0, x$r_buff0_thd2=0, x$r_buff1_thd0=0, x$r_buff1_thd1=0, x$r_buff1_thd2=0, x$read_delayed=0, x$read_delayed_var={0:0}, x$w_buff0=0, x$w_buff0_used=0, x$w_buff1=0, x$w_buff1_used=0, y=0] [L792] 0 pthread_t t2476; VAL [__unbuffered_cnt=0, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=0, weak$$choice2=0, x=0, x$flush_delayed=0, x$mem_tmp=0, x$r_buff0_thd0=0, x$r_buff0_thd1=0, x$r_buff0_thd2=0, x$r_buff1_thd0=0, x$r_buff1_thd1=0, x$r_buff1_thd2=0, x$read_delayed=0, x$read_delayed_var={0:0}, x$w_buff0=0, x$w_buff0_used=0, x$w_buff1=0, x$w_buff1_used=0, y=0] [L793] FCALL, FORK 0 pthread_create(&t2476, ((void *)0), P1, ((void *)0)) VAL [__unbuffered_cnt=0, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=0, weak$$choice2=0, x=0, x$flush_delayed=0, x$mem_tmp=0, x$r_buff0_thd0=0, x$r_buff0_thd1=0, x$r_buff0_thd2=0, x$r_buff1_thd0=0, x$r_buff1_thd1=0, x$r_buff1_thd2=0, x$read_delayed=0, x$read_delayed_var={0:0}, x$w_buff0=0, x$w_buff0_used=0, x$w_buff1=0, x$w_buff1_used=0, y=0] [L754] 2 x$w_buff1 = x$w_buff0 [L755] 2 x$w_buff0 = 2 [L756] 2 x$w_buff1_used = x$w_buff0_used [L757] 2 x$w_buff0_used = (_Bool)1 [L18] COND FALSE 2 !(!expression) [L759] 2 x$r_buff1_thd0 = x$r_buff0_thd0 [L760] 2 x$r_buff1_thd1 = x$r_buff0_thd1 [L761] 2 x$r_buff1_thd2 = x$r_buff0_thd2 [L762] 2 x$r_buff0_thd2 = (_Bool)1 VAL [__unbuffered_cnt=0, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=0, weak$$choice2=0, x=0, x$flush_delayed=0, x$mem_tmp=0, x$r_buff0_thd0=0, x$r_buff0_thd1=0, x$r_buff0_thd2=1, x$r_buff1_thd0=0, x$r_buff1_thd1=0, x$r_buff1_thd2=0, x$read_delayed=0, x$read_delayed_var={0:0}, x$w_buff0=2, x$w_buff0_used=1, x$w_buff1=0, x$w_buff1_used=0, y=0] [L765] 2 y = 1 VAL [__unbuffered_cnt=0, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=0, weak$$choice2=0, x=0, x$flush_delayed=0, x$mem_tmp=0, x$r_buff0_thd0=0, x$r_buff0_thd1=0, x$r_buff0_thd2=1, x$r_buff1_thd0=0, x$r_buff1_thd1=0, x$r_buff1_thd2=0, x$read_delayed=0, x$read_delayed_var={0:0}, x$w_buff0=2, x$w_buff0_used=1, x$w_buff1=0, x$w_buff1_used=0, y=1] [L734] 1 y = 2 VAL [__unbuffered_cnt=0, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=0, weak$$choice2=0, x=0, x$flush_delayed=0, x$mem_tmp=0, x$r_buff0_thd0=0, x$r_buff0_thd1=0, x$r_buff0_thd2=1, x$r_buff1_thd0=0, x$r_buff1_thd1=0, x$r_buff1_thd2=0, x$read_delayed=0, x$read_delayed_var={0:0}, x$w_buff0=2, x$w_buff0_used=1, x$w_buff1=0, x$w_buff1_used=0, y=2] [L737] 1 x = 1 VAL [__unbuffered_cnt=0, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=0, weak$$choice2=0, x=1, x$flush_delayed=0, x$mem_tmp=0, x$r_buff0_thd0=0, x$r_buff0_thd1=0, x$r_buff0_thd2=1, x$r_buff1_thd0=0, x$r_buff1_thd1=0, x$r_buff1_thd2=0, x$read_delayed=0, x$read_delayed_var={0:0}, x$w_buff0=2, x$w_buff0_used=1, x$w_buff1=0, x$w_buff1_used=0, y=2] [L740] EXPR 1 x$w_buff0_used && x$r_buff0_thd1 ? x$w_buff0 : (x$w_buff1_used && x$r_buff1_thd1 ? x$w_buff1 : x) [L740] EXPR 1 x$w_buff1_used && x$r_buff1_thd1 ? x$w_buff1 : x [L740] EXPR 1 x$w_buff0_used && x$r_buff0_thd1 ? x$w_buff0 : (x$w_buff1_used && x$r_buff1_thd1 ? x$w_buff1 : x) [L740] 1 x = x$w_buff0_used && x$r_buff0_thd1 ? x$w_buff0 : (x$w_buff1_used && x$r_buff1_thd1 ? x$w_buff1 : x) [L741] EXPR 1 x$w_buff0_used && x$r_buff0_thd1 ? (_Bool)0 : x$w_buff0_used [L741] 1 x$w_buff0_used = x$w_buff0_used && x$r_buff0_thd1 ? (_Bool)0 : x$w_buff0_used [L742] EXPR 1 x$w_buff0_used && x$r_buff0_thd1 || x$w_buff1_used && x$r_buff1_thd1 ? (_Bool)0 : x$w_buff1_used [L742] 1 x$w_buff1_used = x$w_buff0_used && x$r_buff0_thd1 || x$w_buff1_used && x$r_buff1_thd1 ? (_Bool)0 : x$w_buff1_used [L743] EXPR 1 x$w_buff0_used && x$r_buff0_thd1 ? (_Bool)0 : x$r_buff0_thd1 [L743] 1 x$r_buff0_thd1 = x$w_buff0_used && x$r_buff0_thd1 ? (_Bool)0 : x$r_buff0_thd1 [L744] EXPR 1 x$w_buff0_used && x$r_buff0_thd1 || x$w_buff1_used && x$r_buff1_thd1 ? (_Bool)0 : x$r_buff1_thd1 [L744] 1 x$r_buff1_thd1 = x$w_buff0_used && x$r_buff0_thd1 || x$w_buff1_used && x$r_buff1_thd1 ? (_Bool)0 : x$r_buff1_thd1 [L768] EXPR 2 x$w_buff0_used && x$r_buff0_thd2 ? x$w_buff0 : (x$w_buff1_used && x$r_buff1_thd2 ? x$w_buff1 : x) [L768] 2 x = x$w_buff0_used && x$r_buff0_thd2 ? x$w_buff0 : (x$w_buff1_used && x$r_buff1_thd2 ? x$w_buff1 : x) [L769] EXPR 2 x$w_buff0_used && x$r_buff0_thd2 ? (_Bool)0 : x$w_buff0_used [L769] 2 x$w_buff0_used = x$w_buff0_used && x$r_buff0_thd2 ? (_Bool)0 : x$w_buff0_used [L770] EXPR 2 x$w_buff0_used && x$r_buff0_thd2 || x$w_buff1_used && x$r_buff1_thd2 ? (_Bool)0 : x$w_buff1_used [L770] 2 x$w_buff1_used = x$w_buff0_used && x$r_buff0_thd2 || x$w_buff1_used && x$r_buff1_thd2 ? (_Bool)0 : x$w_buff1_used [L771] EXPR 2 x$w_buff0_used && x$r_buff0_thd2 ? (_Bool)0 : x$r_buff0_thd2 [L771] 2 x$r_buff0_thd2 = x$w_buff0_used && x$r_buff0_thd2 ? (_Bool)0 : x$r_buff0_thd2 [L772] EXPR 2 x$w_buff0_used && x$r_buff0_thd2 || x$w_buff1_used && x$r_buff1_thd2 ? (_Bool)0 : x$r_buff1_thd2 [L772] 2 x$r_buff1_thd2 = x$w_buff0_used && x$r_buff0_thd2 || x$w_buff1_used && x$r_buff1_thd2 ? (_Bool)0 : x$r_buff1_thd2 [L775] 2 __unbuffered_cnt = __unbuffered_cnt + 1 VAL [__unbuffered_cnt=1, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=0, weak$$choice2=0, x=2, x$flush_delayed=0, x$mem_tmp=0, x$r_buff0_thd0=0, x$r_buff0_thd1=0, x$r_buff0_thd2=1, x$r_buff1_thd0=0, x$r_buff1_thd1=0, x$r_buff1_thd2=0, x$read_delayed=0, x$read_delayed_var={0:0}, x$w_buff0=2, x$w_buff0_used=0, x$w_buff1=0, x$w_buff1_used=0, y=2] [L747] 1 __unbuffered_cnt = __unbuffered_cnt + 1 VAL [__unbuffered_cnt=2, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=0, weak$$choice2=0, x=2, x$flush_delayed=0, x$mem_tmp=0, x$r_buff0_thd0=0, x$r_buff0_thd1=0, x$r_buff0_thd2=1, x$r_buff1_thd0=0, x$r_buff1_thd1=0, x$r_buff1_thd2=0, x$read_delayed=0, x$read_delayed_var={0:0}, x$w_buff0=2, x$w_buff0_used=0, x$w_buff1=0, x$w_buff1_used=0, y=2] [L795] 0 main$tmp_guard0 = __unbuffered_cnt == 2 VAL [__unbuffered_cnt=2, arg={0:0}, arg={0:0}, main$tmp_guard0=1, main$tmp_guard1=0, weak$$choice0=0, weak$$choice2=0, x=2, x$flush_delayed=0, x$mem_tmp=0, x$r_buff0_thd0=0, x$r_buff0_thd1=0, x$r_buff0_thd2=1, x$r_buff1_thd0=0, x$r_buff1_thd1=0, x$r_buff1_thd2=0, x$read_delayed=0, x$read_delayed_var={0:0}, x$w_buff0=2, x$w_buff0_used=0, x$w_buff1=0, x$w_buff1_used=0, y=2] [L3] COND FALSE 0 !(!cond) VAL [__unbuffered_cnt=2, arg={0:0}, arg={0:0}, main$tmp_guard0=1, main$tmp_guard1=0, weak$$choice0=0, weak$$choice2=0, x=2, x$flush_delayed=0, x$mem_tmp=0, x$r_buff0_thd0=0, x$r_buff0_thd1=0, x$r_buff0_thd2=1, x$r_buff1_thd0=0, x$r_buff1_thd1=0, x$r_buff1_thd2=0, x$read_delayed=0, x$read_delayed_var={0:0}, x$w_buff0=2, x$w_buff0_used=0, x$w_buff1=0, x$w_buff1_used=0, y=2] [L799] EXPR 0 x$w_buff0_used && x$r_buff0_thd0 ? x$w_buff0 : (x$w_buff1_used && x$r_buff1_thd0 ? x$w_buff1 : x) [L799] EXPR 0 x$w_buff1_used && x$r_buff1_thd0 ? x$w_buff1 : x [L799] EXPR 0 x$w_buff0_used && x$r_buff0_thd0 ? x$w_buff0 : (x$w_buff1_used && x$r_buff1_thd0 ? x$w_buff1 : x) [L799] 0 x = x$w_buff0_used && x$r_buff0_thd0 ? x$w_buff0 : (x$w_buff1_used && x$r_buff1_thd0 ? x$w_buff1 : x) [L800] EXPR 0 x$w_buff0_used && x$r_buff0_thd0 ? (_Bool)0 : x$w_buff0_used [L800] 0 x$w_buff0_used = x$w_buff0_used && x$r_buff0_thd0 ? (_Bool)0 : x$w_buff0_used [L801] EXPR 0 x$w_buff0_used && x$r_buff0_thd0 || x$w_buff1_used && x$r_buff1_thd0 ? (_Bool)0 : x$w_buff1_used [L801] 0 x$w_buff1_used = x$w_buff0_used && x$r_buff0_thd0 || x$w_buff1_used && x$r_buff1_thd0 ? (_Bool)0 : x$w_buff1_used [L802] EXPR 0 x$w_buff0_used && x$r_buff0_thd0 ? (_Bool)0 : x$r_buff0_thd0 [L802] 0 x$r_buff0_thd0 = x$w_buff0_used && x$r_buff0_thd0 ? (_Bool)0 : x$r_buff0_thd0 [L803] EXPR 0 x$w_buff0_used && x$r_buff0_thd0 || x$w_buff1_used && x$r_buff1_thd0 ? (_Bool)0 : x$r_buff1_thd0 [L803] 0 x$r_buff1_thd0 = x$w_buff0_used && x$r_buff0_thd0 || x$w_buff1_used && x$r_buff1_thd0 ? (_Bool)0 : x$r_buff1_thd0 [L806] 0 weak$$choice0 = __VERIFIER_nondet_bool() [L807] 0 weak$$choice2 = __VERIFIER_nondet_bool() [L808] 0 x$flush_delayed = weak$$choice2 [L809] 0 x$mem_tmp = x [L810] EXPR 0 !x$w_buff0_used || !x$r_buff0_thd0 && !x$w_buff1_used || !x$r_buff0_thd0 && !x$r_buff1_thd0 ? x : (x$w_buff0_used && x$r_buff0_thd0 ? x$w_buff0 : x$w_buff1) [L810] 0 x = !x$w_buff0_used || !x$r_buff0_thd0 && !x$w_buff1_used || !x$r_buff0_thd0 && !x$r_buff1_thd0 ? x : (x$w_buff0_used && x$r_buff0_thd0 ? x$w_buff0 : x$w_buff1) [L811] EXPR 0 weak$$choice2 ? x$w_buff0 : (!x$w_buff0_used || !x$r_buff0_thd0 && !x$w_buff1_used || !x$r_buff0_thd0 && !x$r_buff1_thd0 ? x$w_buff0 : (x$w_buff0_used && x$r_buff0_thd0 ? x$w_buff0 : x$w_buff0)) [L811] 0 x$w_buff0 = weak$$choice2 ? x$w_buff0 : (!x$w_buff0_used || !x$r_buff0_thd0 && !x$w_buff1_used || !x$r_buff0_thd0 && !x$r_buff1_thd0 ? x$w_buff0 : (x$w_buff0_used && x$r_buff0_thd0 ? x$w_buff0 : x$w_buff0)) [L812] EXPR 0 weak$$choice2 ? x$w_buff1 : (!x$w_buff0_used || !x$r_buff0_thd0 && !x$w_buff1_used || !x$r_buff0_thd0 && !x$r_buff1_thd0 ? x$w_buff1 : (x$w_buff0_used && x$r_buff0_thd0 ? x$w_buff1 : x$w_buff1)) [L812] 0 x$w_buff1 = weak$$choice2 ? x$w_buff1 : (!x$w_buff0_used || !x$r_buff0_thd0 && !x$w_buff1_used || !x$r_buff0_thd0 && !x$r_buff1_thd0 ? x$w_buff1 : (x$w_buff0_used && x$r_buff0_thd0 ? x$w_buff1 : x$w_buff1)) [L813] EXPR 0 weak$$choice2 ? x$w_buff0_used : (!x$w_buff0_used || !x$r_buff0_thd0 && !x$w_buff1_used || !x$r_buff0_thd0 && !x$r_buff1_thd0 ? x$w_buff0_used : (x$w_buff0_used && x$r_buff0_thd0 ? (_Bool)0 : x$w_buff0_used)) [L813] 0 x$w_buff0_used = weak$$choice2 ? x$w_buff0_used : (!x$w_buff0_used || !x$r_buff0_thd0 && !x$w_buff1_used || !x$r_buff0_thd0 && !x$r_buff1_thd0 ? x$w_buff0_used : (x$w_buff0_used && x$r_buff0_thd0 ? (_Bool)0 : x$w_buff0_used)) [L814] EXPR 0 weak$$choice2 ? x$w_buff1_used : (!x$w_buff0_used || !x$r_buff0_thd0 && !x$w_buff1_used || !x$r_buff0_thd0 && !x$r_buff1_thd0 ? x$w_buff1_used : (x$w_buff0_used && x$r_buff0_thd0 ? (_Bool)0 : (_Bool)0)) [L814] 0 x$w_buff1_used = weak$$choice2 ? x$w_buff1_used : (!x$w_buff0_used || !x$r_buff0_thd0 && !x$w_buff1_used || !x$r_buff0_thd0 && !x$r_buff1_thd0 ? x$w_buff1_used : (x$w_buff0_used && x$r_buff0_thd0 ? (_Bool)0 : (_Bool)0)) [L815] EXPR 0 weak$$choice2 ? x$r_buff0_thd0 : (!x$w_buff0_used || !x$r_buff0_thd0 && !x$w_buff1_used || !x$r_buff0_thd0 && !x$r_buff1_thd0 ? x$r_buff0_thd0 : (x$w_buff0_used && x$r_buff0_thd0 ? (_Bool)0 : x$r_buff0_thd0)) [L815] 0 x$r_buff0_thd0 = weak$$choice2 ? x$r_buff0_thd0 : (!x$w_buff0_used || !x$r_buff0_thd0 && !x$w_buff1_used || !x$r_buff0_thd0 && !x$r_buff1_thd0 ? x$r_buff0_thd0 : (x$w_buff0_used && x$r_buff0_thd0 ? (_Bool)0 : x$r_buff0_thd0)) [L816] EXPR 0 weak$$choice2 ? x$r_buff1_thd0 : (!x$w_buff0_used || !x$r_buff0_thd0 && !x$w_buff1_used || !x$r_buff0_thd0 && !x$r_buff1_thd0 ? x$r_buff1_thd0 : (x$w_buff0_used && x$r_buff0_thd0 ? (_Bool)0 : (_Bool)0)) [L816] 0 x$r_buff1_thd0 = weak$$choice2 ? x$r_buff1_thd0 : (!x$w_buff0_used || !x$r_buff0_thd0 && !x$w_buff1_used || !x$r_buff0_thd0 && !x$r_buff1_thd0 ? x$r_buff1_thd0 : (x$w_buff0_used && x$r_buff0_thd0 ? (_Bool)0 : (_Bool)0)) [L817] 0 main$tmp_guard1 = !(x == 2 && y == 2) [L818] EXPR 0 x$flush_delayed ? x$mem_tmp : x [L818] 0 x = x$flush_delayed ? x$mem_tmp : x [L819] 0 x$flush_delayed = (_Bool)0 VAL [__unbuffered_cnt=2, arg={0:0}, arg={0:0}, main$tmp_guard0=1, main$tmp_guard1=0, weak$$choice0=49, weak$$choice2=255, x=2, x$flush_delayed=0, x$mem_tmp=2, x$r_buff0_thd0=0, x$r_buff0_thd1=0, x$r_buff0_thd2=1, x$r_buff1_thd0=0, x$r_buff1_thd1=0, x$r_buff1_thd2=0, x$read_delayed=0, x$read_delayed_var={0:0}, x$w_buff0=2, x$w_buff0_used=0, x$w_buff1=0, x$w_buff1_used=0, y=2] [L18] COND TRUE 0 !expression VAL [__unbuffered_cnt=2, arg={0:0}, arg={0:0}, main$tmp_guard0=1, main$tmp_guard1=0, weak$$choice0=49, weak$$choice2=255, x=2, x$flush_delayed=0, x$mem_tmp=2, x$r_buff0_thd0=0, x$r_buff0_thd1=0, x$r_buff0_thd2=1, x$r_buff1_thd0=0, x$r_buff1_thd1=0, x$r_buff1_thd2=0, x$read_delayed=0, x$read_delayed_var={0:0}, x$w_buff0=2, x$w_buff0_used=0, x$w_buff1=0, x$w_buff1_used=0, y=2] [L18] 0 reach_error() VAL [__unbuffered_cnt=2, arg={0:0}, arg={0:0}, main$tmp_guard0=1, main$tmp_guard1=0, weak$$choice0=49, weak$$choice2=255, x=2, x$flush_delayed=0, x$mem_tmp=2, x$r_buff0_thd0=0, x$r_buff0_thd1=0, x$r_buff0_thd2=1, x$r_buff1_thd0=0, x$r_buff1_thd1=0, x$r_buff1_thd2=0, x$read_delayed=0, x$read_delayed_var={0:0}, x$w_buff0=2, x$w_buff0_used=0, x$w_buff1=0, x$w_buff1_used=0, y=2] - UnprovableResult [Line: 18]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 793]: Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Reason: Not analyzed. - UnprovableResult [Line: 791]: Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 103 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: 9.9s, OverallIterations: 16, TraceHistogramMax: 1, PathProgramHistogramMax: 4, EmptinessCheckTime: 0.0s, AutomataDifference: 5.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 166 SDtfs, 511 SDslu, 658 SDs, 0 SdLazy, 1308 SolverSat, 253 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.6s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 240 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 209 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 613 ImplicationChecksByTransitivity, 2.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=453occurred in iteration=11, InterpolantAutomatonStates: 185, 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, 0.7s SatisfiabilityAnalysisTime, 2.9s InterpolantComputationTime, 957 NumberOfCodeBlocks, 957 NumberOfCodeBlocksAsserted, 16 NumberOfCheckSat, 876 ConstructedInterpolants, 0 QuantifiedInterpolants, 5525 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 15 InterpolantComputations, 15 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! [2021-10-28 23:02:22,232 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d0c6b66-34da-45f2-9633-42efff4dc68f/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...