./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/pthread-wmm/safe029_power.opt_pso.opt_rmo.opt.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 839c364b Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3552ddc7-aeb7-4786-a221-41c64c059177/bin/uautomizer-DrprNOufMa/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3552ddc7-aeb7-4786-a221-41c64c059177/bin/uautomizer-DrprNOufMa/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3552ddc7-aeb7-4786-a221-41c64c059177/bin/uautomizer-DrprNOufMa/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3552ddc7-aeb7-4786-a221-41c64c059177/bin/uautomizer-DrprNOufMa/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_3552ddc7-aeb7-4786-a221-41c64c059177/bin/uautomizer-DrprNOufMa/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3552ddc7-aeb7-4786-a221-41c64c059177/bin/uautomizer-DrprNOufMa --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 9df54eb091d78e0f82ec179542e5b1e4fed45243a056538ca557e474796bb018 --- Real Ultimate output --- This is Ultimate 0.2.2-hotfix-svcomp22-839c364 [2021-12-06 21:06:30,626 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-06 21:06:30,627 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-06 21:06:30,649 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-06 21:06:30,649 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-06 21:06:30,650 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-06 21:06:30,651 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-06 21:06:30,653 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-06 21:06:30,654 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-06 21:06:30,655 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-06 21:06:30,656 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-06 21:06:30,657 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-06 21:06:30,657 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-06 21:06:30,658 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-06 21:06:30,659 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-06 21:06:30,661 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-06 21:06:30,661 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-06 21:06:30,662 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-06 21:06:30,664 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-06 21:06:30,666 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-06 21:06:30,667 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-06 21:06:30,669 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-06 21:06:30,670 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-06 21:06:30,670 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-06 21:06:30,673 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-06 21:06:30,673 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-06 21:06:30,674 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-06 21:06:30,674 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-06 21:06:30,675 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-06 21:06:30,676 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-06 21:06:30,676 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-06 21:06:30,677 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-06 21:06:30,677 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-06 21:06:30,678 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-06 21:06:30,679 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-06 21:06:30,679 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-06 21:06:30,680 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-06 21:06:30,680 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-06 21:06:30,680 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-06 21:06:30,681 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-06 21:06:30,681 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-06 21:06:30,682 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3552ddc7-aeb7-4786-a221-41c64c059177/bin/uautomizer-DrprNOufMa/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-12-06 21:06:30,698 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-06 21:06:30,699 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-06 21:06:30,699 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-06 21:06:30,699 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-06 21:06:30,699 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-06 21:06:30,700 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-06 21:06:30,700 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-06 21:06:30,700 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-06 21:06:30,700 INFO L138 SettingsManager]: * Use SBE=true [2021-12-06 21:06:30,701 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-06 21:06:30,701 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-06 21:06:30,701 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-06 21:06:30,701 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-06 21:06:30,701 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-06 21:06:30,701 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-06 21:06:30,701 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-06 21:06:30,701 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-06 21:06:30,701 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-06 21:06:30,702 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-06 21:06:30,702 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-06 21:06:30,702 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-06 21:06:30,702 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-06 21:06:30,702 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-06 21:06:30,702 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-06 21:06:30,702 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-06 21:06:30,703 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-06 21:06:30,703 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-06 21:06:30,703 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-06 21:06:30,703 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-06 21:06:30,703 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-06 21:06:30,715 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-06 21:06:30,716 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-06 21:06:30,716 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-06 21:06:30,716 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-06 21:06:30,716 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_3552ddc7-aeb7-4786-a221-41c64c059177/bin/uautomizer-DrprNOufMa/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3552ddc7-aeb7-4786-a221-41c64c059177/bin/uautomizer-DrprNOufMa Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 9df54eb091d78e0f82ec179542e5b1e4fed45243a056538ca557e474796bb018 [2021-12-06 21:06:30,885 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-06 21:06:30,903 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-06 21:06:30,905 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-06 21:06:30,906 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-06 21:06:30,906 INFO L275 PluginConnector]: CDTParser initialized [2021-12-06 21:06:30,907 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3552ddc7-aeb7-4786-a221-41c64c059177/bin/uautomizer-DrprNOufMa/../../sv-benchmarks/c/pthread-wmm/safe029_power.opt_pso.opt_rmo.opt.i [2021-12-06 21:06:30,951 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3552ddc7-aeb7-4786-a221-41c64c059177/bin/uautomizer-DrprNOufMa/data/6b81bc6d7/2eb8aaa8cc3c460bafd7565353696447/FLAG442ca3027 [2021-12-06 21:06:31,377 INFO L306 CDTParser]: Found 1 translation units. [2021-12-06 21:06:31,378 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3552ddc7-aeb7-4786-a221-41c64c059177/sv-benchmarks/c/pthread-wmm/safe029_power.opt_pso.opt_rmo.opt.i [2021-12-06 21:06:31,390 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3552ddc7-aeb7-4786-a221-41c64c059177/bin/uautomizer-DrprNOufMa/data/6b81bc6d7/2eb8aaa8cc3c460bafd7565353696447/FLAG442ca3027 [2021-12-06 21:06:31,400 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3552ddc7-aeb7-4786-a221-41c64c059177/bin/uautomizer-DrprNOufMa/data/6b81bc6d7/2eb8aaa8cc3c460bafd7565353696447 [2021-12-06 21:06:31,402 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-06 21:06:31,403 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-06 21:06:31,404 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-06 21:06:31,404 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-06 21:06:31,408 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-06 21:06:31,409 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.12 09:06:31" (1/1) ... [2021-12-06 21:06:31,410 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@68575434 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 09:06:31, skipping insertion in model container [2021-12-06 21:06:31,410 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.12 09:06:31" (1/1) ... [2021-12-06 21:06:31,416 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-06 21:06:31,451 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-06 21:06:31,587 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3552ddc7-aeb7-4786-a221-41c64c059177/sv-benchmarks/c/pthread-wmm/safe029_power.opt_pso.opt_rmo.opt.i[967,980] [2021-12-06 21:06:31,700 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-06 21:06:31,705 INFO L203 MainTranslator]: Completed pre-run [2021-12-06 21:06:31,714 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3552ddc7-aeb7-4786-a221-41c64c059177/sv-benchmarks/c/pthread-wmm/safe029_power.opt_pso.opt_rmo.opt.i[967,980] [2021-12-06 21:06:31,744 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-06 21:06:31,770 INFO L208 MainTranslator]: Completed translation [2021-12-06 21:06:31,771 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 09:06:31 WrapperNode [2021-12-06 21:06:31,771 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-06 21:06:31,771 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-06 21:06:31,771 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-06 21:06:31,772 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-06 21:06:31,778 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 09:06:31" (1/1) ... [2021-12-06 21:06:31,793 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 09:06:31" (1/1) ... [2021-12-06 21:06:31,817 INFO L137 Inliner]: procedures = 175, calls = 41, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 258 [2021-12-06 21:06:31,818 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-06 21:06:31,818 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-06 21:06:31,818 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-06 21:06:31,818 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-06 21:06:31,825 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 09:06:31" (1/1) ... [2021-12-06 21:06:31,825 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 09:06:31" (1/1) ... [2021-12-06 21:06:31,829 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 09:06:31" (1/1) ... [2021-12-06 21:06:31,829 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 09:06:31" (1/1) ... [2021-12-06 21:06:31,837 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 09:06:31" (1/1) ... [2021-12-06 21:06:31,840 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 09:06:31" (1/1) ... [2021-12-06 21:06:31,842 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 09:06:31" (1/1) ... [2021-12-06 21:06:31,846 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-06 21:06:31,847 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-06 21:06:31,847 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-06 21:06:31,847 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-06 21:06:31,848 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 09:06:31" (1/1) ... [2021-12-06 21:06:31,854 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-06 21:06:31,864 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3552ddc7-aeb7-4786-a221-41c64c059177/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 21:06:31,876 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3552ddc7-aeb7-4786-a221-41c64c059177/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-12-06 21:06:31,878 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3552ddc7-aeb7-4786-a221-41c64c059177/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-12-06 21:06:31,914 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-12-06 21:06:31,915 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-12-06 21:06:31,915 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-06 21:06:31,915 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-12-06 21:06:31,915 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-12-06 21:06:31,915 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2021-12-06 21:06:31,915 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2021-12-06 21:06:31,915 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2021-12-06 21:06:31,915 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2021-12-06 21:06:31,915 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-06 21:06:31,916 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-12-06 21:06:31,916 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-06 21:06:31,916 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-06 21:06:31,917 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-12-06 21:06:32,007 INFO L236 CfgBuilder]: Building ICFG [2021-12-06 21:06:32,008 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-06 21:06:32,313 INFO L277 CfgBuilder]: Performing block encoding [2021-12-06 21:06:32,504 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-06 21:06:32,504 INFO L301 CfgBuilder]: Removed 0 assume(true) statements. [2021-12-06 21:06:32,506 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.12 09:06:32 BoogieIcfgContainer [2021-12-06 21:06:32,506 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-06 21:06:32,507 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-06 21:06:32,507 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-06 21:06:32,510 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-06 21:06:32,510 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.12 09:06:31" (1/3) ... [2021-12-06 21:06:32,511 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@69690eab and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.12 09:06:32, skipping insertion in model container [2021-12-06 21:06:32,511 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 09:06:31" (2/3) ... [2021-12-06 21:06:32,511 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@69690eab and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.12 09:06:32, skipping insertion in model container [2021-12-06 21:06:32,511 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.12 09:06:32" (3/3) ... [2021-12-06 21:06:32,512 INFO L111 eAbstractionObserver]: Analyzing ICFG safe029_power.opt_pso.opt_rmo.opt.i [2021-12-06 21:06:32,516 WARN L149 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-12-06 21:06:32,516 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-06 21:06:32,516 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2021-12-06 21:06:32,516 INFO L513 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-12-06 21:06:32,539 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 21:06:32,539 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 21:06:32,539 WARN L322 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 21:06:32,539 WARN L322 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 21:06:32,540 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 21:06:32,540 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 21:06:32,540 WARN L322 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 21:06:32,540 WARN L322 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 21:06:32,540 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#t~ite3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 21:06:32,540 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#t~ite6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 21:06:32,540 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#t~ite5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 21:06:32,540 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#t~ite4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 21:06:32,540 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#t~ite3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 21:06:32,541 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#t~ite8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 21:06:32,541 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#t~ite7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 21:06:32,541 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#t~ite3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 21:06:32,541 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#t~ite6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 21:06:32,541 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#t~ite5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 21:06:32,541 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#t~ite4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 21:06:32,541 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#t~ite3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 21:06:32,541 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#t~ite8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 21:06:32,542 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#t~ite7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 21:06:32,542 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 21:06:32,542 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 21:06:32,542 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 21:06:32,542 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 21:06:32,543 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#in~arg#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 21:06:32,543 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#in~arg#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 21:06:32,543 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_~arg#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 21:06:32,543 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_~arg#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 21:06:32,543 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#in~arg#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 21:06:32,543 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#in~arg#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 21:06:32,543 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_~arg#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 21:06:32,543 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_~arg#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 21:06:32,543 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0___VERIFIER_assert_#in~expression#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 21:06:32,543 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0___VERIFIER_assert_~expression#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 21:06:32,544 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0___VERIFIER_assert_#in~expression#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 21:06:32,544 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0___VERIFIER_assert_~expression#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 21:06:32,544 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0___VERIFIER_assert_#in~expression#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 21:06:32,552 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0___VERIFIER_assert_~expression#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 21:06:32,552 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0___VERIFIER_assert_#in~expression#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 21:06:32,552 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0___VERIFIER_assert_~expression#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 21:06:32,552 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#t~ite9#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 21:06:32,552 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#t~ite14#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 21:06:32,553 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#t~ite11#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 21:06:32,553 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#t~ite12#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 21:06:32,553 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#t~ite9#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 21:06:32,553 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#t~ite13#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 21:06:32,553 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#t~ite10#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 21:06:32,553 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#t~ite9#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 21:06:32,553 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#t~ite14#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 21:06:32,554 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#t~ite11#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 21:06:32,554 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#t~ite12#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 21:06:32,554 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#t~ite9#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 21:06:32,554 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#t~ite13#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 21:06:32,554 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#t~ite10#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 21:06:32,554 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 21:06:32,555 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 21:06:32,555 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 21:06:32,555 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 21:06:32,557 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0___VERIFIER_assert_~expression#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 21:06:32,557 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_~arg#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 21:06:32,557 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_~arg#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 21:06:32,558 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#t~ite9#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 21:06:32,558 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#t~ite10#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 21:06:32,558 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0___VERIFIER_assert_#in~expression#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 21:06:32,558 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#t~ite11#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 21:06:32,558 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 21:06:32,558 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 21:06:32,558 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#t~ite14#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 21:06:32,559 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#t~ite13#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 21:06:32,559 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#t~ite12#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 21:06:32,559 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#t~ite4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 21:06:32,560 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#t~ite5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 21:06:32,560 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#t~ite3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 21:06:32,560 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#t~ite8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 21:06:32,560 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 21:06:32,560 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#t~ite6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 21:06:32,560 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#t~ite7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 21:06:32,560 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 21:06:32,561 WARN L322 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 21:06:32,561 WARN L322 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 21:06:32,561 INFO L148 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-12-06 21:06:32,599 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-06 21:06:32,605 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-12-06 21:06:32,605 INFO L340 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2021-12-06 21:06:32,614 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 98 places, 93 transitions, 196 flow [2021-12-06 21:06:32,645 INFO L129 PetriNetUnfolder]: 2/91 cut-off events. [2021-12-06 21:06:32,645 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-12-06 21:06:32,648 INFO L84 FinitePrefix]: Finished finitePrefix Result has 98 conditions, 91 events. 2/91 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 43 event pairs, 0 based on Foata normal form. 0/87 useless extension candidates. Maximal degree in co-relation 55. Up to 2 conditions per place. [2021-12-06 21:06:32,648 INFO L82 GeneralOperation]: Start removeDead. Operand has 98 places, 93 transitions, 196 flow [2021-12-06 21:06:32,652 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 96 places, 91 transitions, 188 flow [2021-12-06 21:06:32,663 INFO L129 PetriNetUnfolder]: 0/55 cut-off events. [2021-12-06 21:06:32,663 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-12-06 21:06:32,663 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-06 21:06:32,664 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] [2021-12-06 21:06:32,664 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting P1Err0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION (and 2 more)] === [2021-12-06 21:06:32,668 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 21:06:32,668 INFO L85 PathProgramCache]: Analyzing trace with hash -1568406000, now seen corresponding path program 1 times [2021-12-06 21:06:32,675 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 21:06:32,676 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1327360080] [2021-12-06 21:06:32,676 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 21:06:32,677 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 21:06:32,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:06:32,895 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 21:06:32,895 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 21:06:32,896 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1327360080] [2021-12-06 21:06:32,896 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1327360080] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 21:06:32,897 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 21:06:32,897 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-06 21:06:32,898 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1491537319] [2021-12-06 21:06:32,899 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 21:06:32,907 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-06 21:06:32,908 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 21:06:32,934 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-06 21:06:32,935 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-06 21:06:32,937 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 81 out of 93 [2021-12-06 21:06:32,941 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 96 places, 91 transitions, 188 flow. Second operand has 3 states, 3 states have (on average 82.33333333333333) internal successors, (247), 3 states have internal predecessors, (247), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 21:06:32,941 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-06 21:06:32,941 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 81 of 93 [2021-12-06 21:06:32,942 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-06 21:06:33,013 INFO L129 PetriNetUnfolder]: 17/213 cut-off events. [2021-12-06 21:06:33,013 INFO L130 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2021-12-06 21:06:33,014 INFO L84 FinitePrefix]: Finished finitePrefix Result has 261 conditions, 213 events. 17/213 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 691 event pairs, 7 based on Foata normal form. 8/209 useless extension candidates. Maximal degree in co-relation 215. Up to 27 conditions per place. [2021-12-06 21:06:33,016 INFO L132 encePairwiseOnDemand]: 88/93 looper letters, 9 selfloop transitions, 2 changer transitions 0/90 dead transitions. [2021-12-06 21:06:33,016 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 96 places, 90 transitions, 208 flow [2021-12-06 21:06:33,017 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-06 21:06:33,019 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-12-06 21:06:33,025 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 259 transitions. [2021-12-06 21:06:33,027 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.9283154121863799 [2021-12-06 21:06:33,027 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 259 transitions. [2021-12-06 21:06:33,028 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 259 transitions. [2021-12-06 21:06:33,029 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-06 21:06:33,031 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 259 transitions. [2021-12-06 21:06:33,034 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 86.33333333333333) internal successors, (259), 3 states have internal predecessors, (259), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 21:06:33,039 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 93.0) internal successors, (372), 4 states have internal predecessors, (372), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 21:06:33,039 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 93.0) internal successors, (372), 4 states have internal predecessors, (372), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 21:06:33,040 INFO L186 Difference]: Start difference. First operand has 96 places, 91 transitions, 188 flow. Second operand 3 states and 259 transitions. [2021-12-06 21:06:33,041 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 96 places, 90 transitions, 208 flow [2021-12-06 21:06:33,044 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 94 places, 90 transitions, 206 flow, removed 0 selfloop flow, removed 2 redundant places. [2021-12-06 21:06:33,047 INFO L242 Difference]: Finished difference. Result has 94 places, 87 transitions, 182 flow [2021-12-06 21:06:33,048 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=93, PETRI_DIFFERENCE_MINUEND_FLOW=178, PETRI_DIFFERENCE_MINUEND_PLACES=92, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=87, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=85, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=182, PETRI_PLACES=94, PETRI_TRANSITIONS=87} [2021-12-06 21:06:33,051 INFO L334 CegarLoopForPetriNet]: 96 programPoint places, -2 predicate places. [2021-12-06 21:06:33,051 INFO L470 AbstractCegarLoop]: Abstraction has has 94 places, 87 transitions, 182 flow [2021-12-06 21:06:33,051 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 82.33333333333333) internal successors, (247), 3 states have internal predecessors, (247), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 21:06:33,051 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-06 21:06:33,052 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 21:06:33,052 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-06 21:06:33,052 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION (and 2 more)] === [2021-12-06 21:06:33,052 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 21:06:33,052 INFO L85 PathProgramCache]: Analyzing trace with hash 1291529996, now seen corresponding path program 1 times [2021-12-06 21:06:33,053 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 21:06:33,053 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [944210441] [2021-12-06 21:06:33,053 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 21:06:33,053 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 21:06:33,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:06:33,264 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 21:06:33,264 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 21:06:33,264 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [944210441] [2021-12-06 21:06:33,265 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [944210441] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 21:06:33,265 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 21:06:33,265 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-06 21:06:33,265 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1162501150] [2021-12-06 21:06:33,265 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 21:06:33,266 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-06 21:06:33,267 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 21:06:33,267 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-06 21:06:33,267 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-06 21:06:33,269 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 73 out of 93 [2021-12-06 21:06:33,270 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 94 places, 87 transitions, 182 flow. Second operand has 6 states, 6 states have (on average 74.66666666666667) internal successors, (448), 6 states have internal predecessors, (448), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 21:06:33,270 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-06 21:06:33,270 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 73 of 93 [2021-12-06 21:06:33,270 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-06 21:06:33,512 INFO L129 PetriNetUnfolder]: 178/649 cut-off events. [2021-12-06 21:06:33,512 INFO L130 PetriNetUnfolder]: For 33/33 co-relation queries the response was YES. [2021-12-06 21:06:33,514 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1021 conditions, 649 events. 178/649 cut-off events. For 33/33 co-relation queries the response was YES. Maximal size of possible extension queue 44. Compared 3793 event pairs, 61 based on Foata normal form. 0/627 useless extension candidates. Maximal degree in co-relation 974. Up to 186 conditions per place. [2021-12-06 21:06:33,516 INFO L132 encePairwiseOnDemand]: 86/93 looper letters, 17 selfloop transitions, 3 changer transitions 43/125 dead transitions. [2021-12-06 21:06:33,516 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 102 places, 125 transitions, 382 flow [2021-12-06 21:06:33,517 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-06 21:06:33,517 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-12-06 21:06:33,519 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 713 transitions. [2021-12-06 21:06:33,521 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8518518518518519 [2021-12-06 21:06:33,521 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 713 transitions. [2021-12-06 21:06:33,521 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 713 transitions. [2021-12-06 21:06:33,522 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-06 21:06:33,522 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 713 transitions. [2021-12-06 21:06:33,525 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 79.22222222222223) internal successors, (713), 9 states have internal predecessors, (713), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 21:06:33,528 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 93.0) internal successors, (930), 10 states have internal predecessors, (930), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 21:06:33,529 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 93.0) internal successors, (930), 10 states have internal predecessors, (930), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 21:06:33,529 INFO L186 Difference]: Start difference. First operand has 94 places, 87 transitions, 182 flow. Second operand 9 states and 713 transitions. [2021-12-06 21:06:33,529 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 102 places, 125 transitions, 382 flow [2021-12-06 21:06:33,530 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 100 places, 125 transitions, 364 flow, removed 0 selfloop flow, removed 2 redundant places. [2021-12-06 21:06:33,532 INFO L242 Difference]: Finished difference. Result has 107 places, 79 transitions, 201 flow [2021-12-06 21:06:33,532 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=93, PETRI_DIFFERENCE_MINUEND_FLOW=178, PETRI_DIFFERENCE_MINUEND_PLACES=92, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=87, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=84, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=201, PETRI_PLACES=107, PETRI_TRANSITIONS=79} [2021-12-06 21:06:33,533 INFO L334 CegarLoopForPetriNet]: 96 programPoint places, 11 predicate places. [2021-12-06 21:06:33,533 INFO L470 AbstractCegarLoop]: Abstraction has has 107 places, 79 transitions, 201 flow [2021-12-06 21:06:33,534 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 74.66666666666667) internal successors, (448), 6 states have internal predecessors, (448), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 21:06:33,534 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-06 21:06:33,534 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 21:06:33,534 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-06 21:06:33,534 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION (and 2 more)] === [2021-12-06 21:06:33,534 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 21:06:33,535 INFO L85 PathProgramCache]: Analyzing trace with hash -2040361013, now seen corresponding path program 1 times [2021-12-06 21:06:33,535 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 21:06:33,535 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [674891574] [2021-12-06 21:06:33,535 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 21:06:33,535 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 21:06:33,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:06:33,702 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 21:06:33,702 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 21:06:33,702 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [674891574] [2021-12-06 21:06:33,702 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [674891574] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 21:06:33,702 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 21:06:33,703 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-06 21:06:33,703 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [582836865] [2021-12-06 21:06:33,703 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 21:06:33,703 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-06 21:06:33,704 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 21:06:33,704 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-06 21:06:33,704 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-12-06 21:06:33,705 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 72 out of 93 [2021-12-06 21:06:33,707 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 107 places, 79 transitions, 201 flow. Second operand has 8 states, 8 states have (on average 73.5) internal successors, (588), 8 states have internal predecessors, (588), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 21:06:33,707 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-06 21:06:33,707 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 72 of 93 [2021-12-06 21:06:33,707 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-06 21:06:33,928 INFO L129 PetriNetUnfolder]: 134/431 cut-off events. [2021-12-06 21:06:33,928 INFO L130 PetriNetUnfolder]: For 300/300 co-relation queries the response was YES. [2021-12-06 21:06:33,930 INFO L84 FinitePrefix]: Finished finitePrefix Result has 931 conditions, 431 events. 134/431 cut-off events. For 300/300 co-relation queries the response was YES. Maximal size of possible extension queue 38. Compared 2168 event pairs, 45 based on Foata normal form. 14/430 useless extension candidates. Maximal degree in co-relation 875. Up to 127 conditions per place. [2021-12-06 21:06:33,931 INFO L132 encePairwiseOnDemand]: 84/93 looper letters, 16 selfloop transitions, 5 changer transitions 28/112 dead transitions. [2021-12-06 21:06:33,932 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 101 places, 112 transitions, 385 flow [2021-12-06 21:06:33,932 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-12-06 21:06:33,932 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2021-12-06 21:06:33,934 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 843 transitions. [2021-12-06 21:06:33,934 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8240469208211144 [2021-12-06 21:06:33,934 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 843 transitions. [2021-12-06 21:06:33,935 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 843 transitions. [2021-12-06 21:06:33,935 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-06 21:06:33,935 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 843 transitions. [2021-12-06 21:06:33,937 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 76.63636363636364) internal successors, (843), 11 states have internal predecessors, (843), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 21:06:33,940 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 93.0) internal successors, (1116), 12 states have internal predecessors, (1116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 21:06:33,941 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 93.0) internal successors, (1116), 12 states have internal predecessors, (1116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 21:06:33,941 INFO L186 Difference]: Start difference. First operand has 107 places, 79 transitions, 201 flow. Second operand 11 states and 843 transitions. [2021-12-06 21:06:33,941 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 101 places, 112 transitions, 385 flow [2021-12-06 21:06:33,944 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 97 places, 112 transitions, 368 flow, removed 7 selfloop flow, removed 4 redundant places. [2021-12-06 21:06:33,946 INFO L242 Difference]: Finished difference. Result has 104 places, 81 transitions, 239 flow [2021-12-06 21:06:33,946 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=93, PETRI_DIFFERENCE_MINUEND_FLOW=192, PETRI_DIFFERENCE_MINUEND_PLACES=87, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=79, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=74, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=239, PETRI_PLACES=104, PETRI_TRANSITIONS=81} [2021-12-06 21:06:33,946 INFO L334 CegarLoopForPetriNet]: 96 programPoint places, 8 predicate places. [2021-12-06 21:06:33,947 INFO L470 AbstractCegarLoop]: Abstraction has has 104 places, 81 transitions, 239 flow [2021-12-06 21:06:33,947 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 73.5) internal successors, (588), 8 states have internal predecessors, (588), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 21:06:33,947 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-06 21:06:33,947 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 21:06:33,947 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-12-06 21:06:33,948 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION (and 2 more)] === [2021-12-06 21:06:33,948 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 21:06:33,948 INFO L85 PathProgramCache]: Analyzing trace with hash 516845962, now seen corresponding path program 1 times [2021-12-06 21:06:33,948 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 21:06:33,948 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1786731404] [2021-12-06 21:06:33,948 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 21:06:33,948 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 21:06:33,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:06:34,066 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 21:06:34,066 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 21:06:34,066 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1786731404] [2021-12-06 21:06:34,066 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1786731404] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 21:06:34,066 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 21:06:34,066 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-06 21:06:34,067 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1917047425] [2021-12-06 21:06:34,067 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 21:06:34,067 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-06 21:06:34,067 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 21:06:34,067 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-06 21:06:34,068 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-12-06 21:06:34,068 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 72 out of 93 [2021-12-06 21:06:34,070 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 104 places, 81 transitions, 239 flow. Second operand has 8 states, 8 states have (on average 73.625) internal successors, (589), 8 states have internal predecessors, (589), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 21:06:34,070 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-06 21:06:34,070 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 72 of 93 [2021-12-06 21:06:34,070 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-06 21:06:34,273 INFO L129 PetriNetUnfolder]: 103/353 cut-off events. [2021-12-06 21:06:34,273 INFO L130 PetriNetUnfolder]: For 634/634 co-relation queries the response was YES. [2021-12-06 21:06:34,274 INFO L84 FinitePrefix]: Finished finitePrefix Result has 963 conditions, 353 events. 103/353 cut-off events. For 634/634 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 1501 event pairs, 16 based on Foata normal form. 8/349 useless extension candidates. Maximal degree in co-relation 900. Up to 106 conditions per place. [2021-12-06 21:06:34,275 INFO L132 encePairwiseOnDemand]: 83/93 looper letters, 23 selfloop transitions, 7 changer transitions 19/112 dead transitions. [2021-12-06 21:06:34,275 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 108 places, 112 transitions, 478 flow [2021-12-06 21:06:34,276 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-12-06 21:06:34,276 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2021-12-06 21:06:34,278 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 841 transitions. [2021-12-06 21:06:34,278 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8220918866080157 [2021-12-06 21:06:34,278 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 841 transitions. [2021-12-06 21:06:34,278 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 841 transitions. [2021-12-06 21:06:34,279 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-06 21:06:34,279 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 841 transitions. [2021-12-06 21:06:34,281 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 76.45454545454545) internal successors, (841), 11 states have internal predecessors, (841), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 21:06:34,283 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 93.0) internal successors, (1116), 12 states have internal predecessors, (1116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 21:06:34,284 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 93.0) internal successors, (1116), 12 states have internal predecessors, (1116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 21:06:34,284 INFO L186 Difference]: Start difference. First operand has 104 places, 81 transitions, 239 flow. Second operand 11 states and 841 transitions. [2021-12-06 21:06:34,284 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 108 places, 112 transitions, 478 flow [2021-12-06 21:06:34,287 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 102 places, 112 transitions, 450 flow, removed 10 selfloop flow, removed 6 redundant places. [2021-12-06 21:06:34,289 INFO L242 Difference]: Finished difference. Result has 110 places, 85 transitions, 279 flow [2021-12-06 21:06:34,289 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=93, PETRI_DIFFERENCE_MINUEND_FLOW=226, PETRI_DIFFERENCE_MINUEND_PLACES=92, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=81, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=75, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=279, PETRI_PLACES=110, PETRI_TRANSITIONS=85} [2021-12-06 21:06:34,290 INFO L334 CegarLoopForPetriNet]: 96 programPoint places, 14 predicate places. [2021-12-06 21:06:34,290 INFO L470 AbstractCegarLoop]: Abstraction has has 110 places, 85 transitions, 279 flow [2021-12-06 21:06:34,290 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 73.625) internal successors, (589), 8 states have internal predecessors, (589), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 21:06:34,290 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-06 21:06:34,290 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 21:06:34,290 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-12-06 21:06:34,291 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION (and 2 more)] === [2021-12-06 21:06:34,291 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 21:06:34,291 INFO L85 PathProgramCache]: Analyzing trace with hash 1145345042, now seen corresponding path program 2 times [2021-12-06 21:06:34,291 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 21:06:34,291 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1611241799] [2021-12-06 21:06:34,291 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 21:06:34,292 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 21:06:34,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:06:34,426 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 21:06:34,426 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 21:06:34,426 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1611241799] [2021-12-06 21:06:34,427 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1611241799] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 21:06:34,427 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 21:06:34,427 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-12-06 21:06:34,427 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [968600359] [2021-12-06 21:06:34,427 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 21:06:34,427 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-12-06 21:06:34,427 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 21:06:34,428 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-12-06 21:06:34,428 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2021-12-06 21:06:34,428 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 93 [2021-12-06 21:06:34,429 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 110 places, 85 transitions, 279 flow. Second operand has 10 states, 10 states have (on average 72.4) internal successors, (724), 10 states have internal predecessors, (724), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 21:06:34,429 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-06 21:06:34,429 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 93 [2021-12-06 21:06:34,429 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-06 21:06:34,718 INFO L129 PetriNetUnfolder]: 95/328 cut-off events. [2021-12-06 21:06:34,718 INFO L130 PetriNetUnfolder]: For 868/900 co-relation queries the response was YES. [2021-12-06 21:06:34,720 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1056 conditions, 328 events. 95/328 cut-off events. For 868/900 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 1409 event pairs, 29 based on Foata normal form. 11/321 useless extension candidates. Maximal degree in co-relation 987. Up to 100 conditions per place. [2021-12-06 21:06:34,721 INFO L132 encePairwiseOnDemand]: 83/93 looper letters, 23 selfloop transitions, 9 changer transitions 25/119 dead transitions. [2021-12-06 21:06:34,721 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 118 places, 119 transitions, 608 flow [2021-12-06 21:06:34,722 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-12-06 21:06:34,722 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2021-12-06 21:06:34,724 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 1121 transitions. [2021-12-06 21:06:34,725 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.803584229390681 [2021-12-06 21:06:34,725 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 1121 transitions. [2021-12-06 21:06:34,725 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 1121 transitions. [2021-12-06 21:06:34,725 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-06 21:06:34,726 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 1121 transitions. [2021-12-06 21:06:34,728 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 74.73333333333333) internal successors, (1121), 15 states have internal predecessors, (1121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 21:06:34,731 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 93.0) internal successors, (1488), 16 states have internal predecessors, (1488), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 21:06:34,731 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 93.0) internal successors, (1488), 16 states have internal predecessors, (1488), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 21:06:34,731 INFO L186 Difference]: Start difference. First operand has 110 places, 85 transitions, 279 flow. Second operand 15 states and 1121 transitions. [2021-12-06 21:06:34,731 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 118 places, 119 transitions, 608 flow [2021-12-06 21:06:34,734 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 110 places, 119 transitions, 548 flow, removed 24 selfloop flow, removed 8 redundant places. [2021-12-06 21:06:34,736 INFO L242 Difference]: Finished difference. Result has 120 places, 87 transitions, 321 flow [2021-12-06 21:06:34,736 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=93, PETRI_DIFFERENCE_MINUEND_FLOW=262, PETRI_DIFFERENCE_MINUEND_PLACES=96, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=85, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=77, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=321, PETRI_PLACES=120, PETRI_TRANSITIONS=87} [2021-12-06 21:06:34,737 INFO L334 CegarLoopForPetriNet]: 96 programPoint places, 24 predicate places. [2021-12-06 21:06:34,737 INFO L470 AbstractCegarLoop]: Abstraction has has 120 places, 87 transitions, 321 flow [2021-12-06 21:06:34,737 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 72.4) internal successors, (724), 10 states have internal predecessors, (724), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 21:06:34,737 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-06 21:06:34,737 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 21:06:34,738 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-12-06 21:06:34,738 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION (and 2 more)] === [2021-12-06 21:06:34,738 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 21:06:34,738 INFO L85 PathProgramCache]: Analyzing trace with hash -71306102, now seen corresponding path program 1 times [2021-12-06 21:06:34,738 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 21:06:34,738 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1828963619] [2021-12-06 21:06:34,738 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 21:06:34,738 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 21:06:34,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:06:34,906 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 21:06:34,907 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 21:06:34,907 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1828963619] [2021-12-06 21:06:34,907 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1828963619] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 21:06:34,907 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 21:06:34,907 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-12-06 21:06:34,907 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1773107871] [2021-12-06 21:06:34,907 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 21:06:34,907 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-12-06 21:06:34,908 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 21:06:34,908 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-12-06 21:06:34,908 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2021-12-06 21:06:34,909 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 70 out of 93 [2021-12-06 21:06:34,909 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 120 places, 87 transitions, 321 flow. Second operand has 11 states, 11 states have (on average 71.45454545454545) internal successors, (786), 11 states have internal predecessors, (786), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 21:06:34,910 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-06 21:06:34,910 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 70 of 93 [2021-12-06 21:06:34,910 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-06 21:06:35,153 INFO L129 PetriNetUnfolder]: 67/323 cut-off events. [2021-12-06 21:06:35,154 INFO L130 PetriNetUnfolder]: For 1239/1264 co-relation queries the response was YES. [2021-12-06 21:06:35,155 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1098 conditions, 323 events. 67/323 cut-off events. For 1239/1264 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 1422 event pairs, 12 based on Foata normal form. 11/321 useless extension candidates. Maximal degree in co-relation 1022. Up to 58 conditions per place. [2021-12-06 21:06:35,157 INFO L132 encePairwiseOnDemand]: 83/93 looper letters, 26 selfloop transitions, 8 changer transitions 19/114 dead transitions. [2021-12-06 21:06:35,157 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 123 places, 114 transitions, 673 flow [2021-12-06 21:06:35,158 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-12-06 21:06:35,158 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2021-12-06 21:06:35,160 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 958 transitions. [2021-12-06 21:06:35,160 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7923904052936311 [2021-12-06 21:06:35,160 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 958 transitions. [2021-12-06 21:06:35,160 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 958 transitions. [2021-12-06 21:06:35,161 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-06 21:06:35,161 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 958 transitions. [2021-12-06 21:06:35,164 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 73.6923076923077) internal successors, (958), 13 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) [2021-12-06 21:06:35,166 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 93.0) internal successors, (1302), 14 states have internal predecessors, (1302), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 21:06:35,167 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 93.0) internal successors, (1302), 14 states have internal predecessors, (1302), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 21:06:35,167 INFO L186 Difference]: Start difference. First operand has 120 places, 87 transitions, 321 flow. Second operand 13 states and 958 transitions. [2021-12-06 21:06:35,167 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 123 places, 114 transitions, 673 flow [2021-12-06 21:06:35,170 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 114 places, 114 transitions, 611 flow, removed 25 selfloop flow, removed 9 redundant places. [2021-12-06 21:06:35,172 INFO L242 Difference]: Finished difference. Result has 121 places, 87 transitions, 331 flow [2021-12-06 21:06:35,173 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=93, PETRI_DIFFERENCE_MINUEND_FLOW=297, PETRI_DIFFERENCE_MINUEND_PLACES=102, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=87, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=79, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=331, PETRI_PLACES=121, PETRI_TRANSITIONS=87} [2021-12-06 21:06:35,173 INFO L334 CegarLoopForPetriNet]: 96 programPoint places, 25 predicate places. [2021-12-06 21:06:35,173 INFO L470 AbstractCegarLoop]: Abstraction has has 121 places, 87 transitions, 331 flow [2021-12-06 21:06:35,174 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 71.45454545454545) internal successors, (786), 11 states have internal predecessors, (786), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 21:06:35,174 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-06 21:06:35,174 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 21:06:35,174 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-12-06 21:06:35,174 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION (and 2 more)] === [2021-12-06 21:06:35,175 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 21:06:35,175 INFO L85 PathProgramCache]: Analyzing trace with hash -1854324791, now seen corresponding path program 1 times [2021-12-06 21:06:35,175 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 21:06:35,175 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1923982115] [2021-12-06 21:06:35,175 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 21:06:35,175 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 21:06:35,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:06:35,258 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 21:06:35,258 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 21:06:35,259 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1923982115] [2021-12-06 21:06:35,259 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1923982115] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 21:06:35,259 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 21:06:35,259 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-06 21:06:35,259 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1923397139] [2021-12-06 21:06:35,259 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 21:06:35,260 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-06 21:06:35,260 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 21:06:35,260 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-06 21:06:35,260 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-06 21:06:35,261 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 73 out of 93 [2021-12-06 21:06:35,262 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 121 places, 87 transitions, 331 flow. Second operand has 6 states, 6 states have (on average 75.16666666666667) internal successors, (451), 6 states have internal predecessors, (451), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 21:06:35,262 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-06 21:06:35,262 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 73 of 93 [2021-12-06 21:06:35,262 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-06 21:06:35,409 INFO L129 PetriNetUnfolder]: 68/326 cut-off events. [2021-12-06 21:06:35,409 INFO L130 PetriNetUnfolder]: For 1454/1588 co-relation queries the response was YES. [2021-12-06 21:06:35,410 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1162 conditions, 326 events. 68/326 cut-off events. For 1454/1588 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 1534 event pairs, 33 based on Foata normal form. 10/309 useless extension candidates. Maximal degree in co-relation 1087. Up to 89 conditions per place. [2021-12-06 21:06:35,412 INFO L132 encePairwiseOnDemand]: 87/93 looper letters, 16 selfloop transitions, 2 changer transitions 26/107 dead transitions. [2021-12-06 21:06:35,412 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 123 places, 107 transitions, 614 flow [2021-12-06 21:06:35,412 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-06 21:06:35,412 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-12-06 21:06:35,414 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 694 transitions. [2021-12-06 21:06:35,414 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8291517323775388 [2021-12-06 21:06:35,414 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 694 transitions. [2021-12-06 21:06:35,414 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 694 transitions. [2021-12-06 21:06:35,415 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-06 21:06:35,415 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 694 transitions. [2021-12-06 21:06:35,416 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 77.11111111111111) internal successors, (694), 9 states have internal predecessors, (694), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 21:06:35,418 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 93.0) internal successors, (930), 10 states have internal predecessors, (930), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 21:06:35,418 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 93.0) internal successors, (930), 10 states have internal predecessors, (930), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 21:06:35,418 INFO L186 Difference]: Start difference. First operand has 121 places, 87 transitions, 331 flow. Second operand 9 states and 694 transitions. [2021-12-06 21:06:35,418 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 123 places, 107 transitions, 614 flow [2021-12-06 21:06:35,421 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 112 places, 107 transitions, 549 flow, removed 26 selfloop flow, removed 11 redundant places. [2021-12-06 21:06:35,423 INFO L242 Difference]: Finished difference. Result has 119 places, 79 transitions, 260 flow [2021-12-06 21:06:35,423 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=93, PETRI_DIFFERENCE_MINUEND_FLOW=295, PETRI_DIFFERENCE_MINUEND_PLACES=104, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=87, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=85, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=260, PETRI_PLACES=119, PETRI_TRANSITIONS=79} [2021-12-06 21:06:35,423 INFO L334 CegarLoopForPetriNet]: 96 programPoint places, 23 predicate places. [2021-12-06 21:06:35,424 INFO L470 AbstractCegarLoop]: Abstraction has has 119 places, 79 transitions, 260 flow [2021-12-06 21:06:35,424 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 75.16666666666667) internal successors, (451), 6 states have internal predecessors, (451), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 21:06:35,424 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-06 21:06:35,424 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 21:06:35,424 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-12-06 21:06:35,424 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION (and 2 more)] === [2021-12-06 21:06:35,425 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 21:06:35,425 INFO L85 PathProgramCache]: Analyzing trace with hash -673807284, now seen corresponding path program 1 times [2021-12-06 21:06:35,425 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 21:06:35,425 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1331395178] [2021-12-06 21:06:35,425 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 21:06:35,425 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 21:06:35,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:06:35,555 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 21:06:35,556 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 21:06:35,556 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1331395178] [2021-12-06 21:06:35,556 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1331395178] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 21:06:35,556 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 21:06:35,556 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-12-06 21:06:35,556 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [695783123] [2021-12-06 21:06:35,556 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 21:06:35,557 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-12-06 21:06:35,557 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 21:06:35,557 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-12-06 21:06:35,558 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2021-12-06 21:06:35,558 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 67 out of 93 [2021-12-06 21:06:35,559 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 119 places, 79 transitions, 260 flow. Second operand has 10 states, 10 states have (on average 68.7) internal successors, (687), 10 states have internal predecessors, (687), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 21:06:35,559 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-06 21:06:35,559 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 67 of 93 [2021-12-06 21:06:35,560 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-06 21:06:35,851 INFO L129 PetriNetUnfolder]: 222/705 cut-off events. [2021-12-06 21:06:35,851 INFO L130 PetriNetUnfolder]: For 1659/1681 co-relation queries the response was YES. [2021-12-06 21:06:35,853 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1859 conditions, 705 events. 222/705 cut-off events. For 1659/1681 co-relation queries the response was YES. Maximal size of possible extension queue 45. Compared 4264 event pairs, 20 based on Foata normal form. 17/700 useless extension candidates. Maximal degree in co-relation 1783. Up to 241 conditions per place. [2021-12-06 21:06:35,856 INFO L132 encePairwiseOnDemand]: 78/93 looper letters, 40 selfloop transitions, 19 changer transitions 7/121 dead transitions. [2021-12-06 21:06:35,856 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 121 places, 121 transitions, 559 flow [2021-12-06 21:06:35,856 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-12-06 21:06:35,857 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2021-12-06 21:06:35,858 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 802 transitions. [2021-12-06 21:06:35,859 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7839687194525904 [2021-12-06 21:06:35,859 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 802 transitions. [2021-12-06 21:06:35,859 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 802 transitions. [2021-12-06 21:06:35,859 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-06 21:06:35,859 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 802 transitions. [2021-12-06 21:06:35,861 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 72.9090909090909) internal successors, (802), 11 states have internal predecessors, (802), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 21:06:35,863 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 93.0) internal successors, (1116), 12 states have internal predecessors, (1116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 21:06:35,863 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 93.0) internal successors, (1116), 12 states have internal predecessors, (1116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 21:06:35,863 INFO L186 Difference]: Start difference. First operand has 119 places, 79 transitions, 260 flow. Second operand 11 states and 802 transitions. [2021-12-06 21:06:35,863 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 121 places, 121 transitions, 559 flow [2021-12-06 21:06:35,867 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 106 places, 121 transitions, 502 flow, removed 22 selfloop flow, removed 15 redundant places. [2021-12-06 21:06:35,868 INFO L242 Difference]: Finished difference. Result has 112 places, 93 transitions, 363 flow [2021-12-06 21:06:35,868 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=93, PETRI_DIFFERENCE_MINUEND_FLOW=220, PETRI_DIFFERENCE_MINUEND_PLACES=96, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=79, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=66, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=363, PETRI_PLACES=112, PETRI_TRANSITIONS=93} [2021-12-06 21:06:35,869 INFO L334 CegarLoopForPetriNet]: 96 programPoint places, 16 predicate places. [2021-12-06 21:06:35,869 INFO L470 AbstractCegarLoop]: Abstraction has has 112 places, 93 transitions, 363 flow [2021-12-06 21:06:35,870 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 68.7) internal successors, (687), 10 states have internal predecessors, (687), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 21:06:35,870 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-06 21:06:35,870 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 21:06:35,870 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-12-06 21:06:35,870 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION (and 2 more)] === [2021-12-06 21:06:35,870 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 21:06:35,871 INFO L85 PathProgramCache]: Analyzing trace with hash 1024197062, now seen corresponding path program 2 times [2021-12-06 21:06:35,871 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 21:06:35,871 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1604102864] [2021-12-06 21:06:35,871 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 21:06:35,871 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 21:06:35,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:06:35,943 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 21:06:35,943 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 21:06:35,944 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1604102864] [2021-12-06 21:06:35,944 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1604102864] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 21:06:35,944 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 21:06:35,944 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-06 21:06:35,944 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1184729857] [2021-12-06 21:06:35,944 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 21:06:35,945 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-06 21:06:35,945 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 21:06:35,945 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-06 21:06:35,945 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-06 21:06:35,946 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 72 out of 93 [2021-12-06 21:06:35,947 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 112 places, 93 transitions, 363 flow. Second operand has 6 states, 6 states have (on average 74.16666666666667) internal successors, (445), 6 states have internal predecessors, (445), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 21:06:35,947 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-06 21:06:35,947 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 72 of 93 [2021-12-06 21:06:35,947 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-06 21:06:36,120 INFO L129 PetriNetUnfolder]: 147/507 cut-off events. [2021-12-06 21:06:36,120 INFO L130 PetriNetUnfolder]: For 838/843 co-relation queries the response was YES. [2021-12-06 21:06:36,123 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1425 conditions, 507 events. 147/507 cut-off events. For 838/843 co-relation queries the response was YES. Maximal size of possible extension queue 40. Compared 2690 event pairs, 14 based on Foata normal form. 20/521 useless extension candidates. Maximal degree in co-relation 1356. Up to 115 conditions per place. [2021-12-06 21:06:36,124 INFO L132 encePairwiseOnDemand]: 85/93 looper letters, 20 selfloop transitions, 5 changer transitions 36/122 dead transitions. [2021-12-06 21:06:36,124 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 118 places, 122 transitions, 633 flow [2021-12-06 21:06:36,125 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-06 21:06:36,125 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-12-06 21:06:36,127 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 699 transitions. [2021-12-06 21:06:36,127 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8351254480286738 [2021-12-06 21:06:36,127 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 699 transitions. [2021-12-06 21:06:36,127 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 699 transitions. [2021-12-06 21:06:36,127 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-06 21:06:36,127 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 699 transitions. [2021-12-06 21:06:36,129 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 77.66666666666667) internal successors, (699), 9 states have internal predecessors, (699), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 21:06:36,130 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 93.0) internal successors, (930), 10 states have internal predecessors, (930), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 21:06:36,131 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 93.0) internal successors, (930), 10 states have internal predecessors, (930), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 21:06:36,131 INFO L186 Difference]: Start difference. First operand has 112 places, 93 transitions, 363 flow. Second operand 9 states and 699 transitions. [2021-12-06 21:06:36,131 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 118 places, 122 transitions, 633 flow [2021-12-06 21:06:36,133 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 111 places, 122 transitions, 597 flow, removed 2 selfloop flow, removed 7 redundant places. [2021-12-06 21:06:36,135 INFO L242 Difference]: Finished difference. Result has 117 places, 80 transitions, 273 flow [2021-12-06 21:06:36,135 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=93, PETRI_DIFFERENCE_MINUEND_FLOW=311, PETRI_DIFFERENCE_MINUEND_PLACES=103, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=89, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=84, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=273, PETRI_PLACES=117, PETRI_TRANSITIONS=80} [2021-12-06 21:06:36,136 INFO L334 CegarLoopForPetriNet]: 96 programPoint places, 21 predicate places. [2021-12-06 21:06:36,136 INFO L470 AbstractCegarLoop]: Abstraction has has 117 places, 80 transitions, 273 flow [2021-12-06 21:06:36,136 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 74.16666666666667) internal successors, (445), 6 states have internal predecessors, (445), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 21:06:36,136 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-06 21:06:36,137 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 21:06:36,137 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-12-06 21:06:36,137 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION (and 2 more)] === [2021-12-06 21:06:36,137 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 21:06:36,137 INFO L85 PathProgramCache]: Analyzing trace with hash -1068636325, now seen corresponding path program 1 times [2021-12-06 21:06:36,137 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 21:06:36,138 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1688043747] [2021-12-06 21:06:36,138 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 21:06:36,138 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 21:06:36,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:06:36,207 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 21:06:36,207 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 21:06:36,208 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1688043747] [2021-12-06 21:06:36,208 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1688043747] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 21:06:36,208 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 21:06:36,208 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-06 21:06:36,208 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [713743505] [2021-12-06 21:06:36,208 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 21:06:36,208 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-06 21:06:36,208 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 21:06:36,209 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-06 21:06:36,209 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-12-06 21:06:36,209 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 72 out of 93 [2021-12-06 21:06:36,210 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 117 places, 80 transitions, 273 flow. Second operand has 7 states, 7 states have (on average 74.0) internal successors, (518), 7 states have internal predecessors, (518), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 21:06:36,210 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-06 21:06:36,210 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 72 of 93 [2021-12-06 21:06:36,210 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-06 21:06:36,337 INFO L129 PetriNetUnfolder]: 32/188 cut-off events. [2021-12-06 21:06:36,337 INFO L130 PetriNetUnfolder]: For 351/351 co-relation queries the response was YES. [2021-12-06 21:06:36,338 INFO L84 FinitePrefix]: Finished finitePrefix Result has 546 conditions, 188 events. 32/188 cut-off events. For 351/351 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 582 event pairs, 1 based on Foata normal form. 9/197 useless extension candidates. Maximal degree in co-relation 486. Up to 29 conditions per place. [2021-12-06 21:06:36,338 INFO L132 encePairwiseOnDemand]: 85/93 looper letters, 13 selfloop transitions, 7 changer transitions 17/97 dead transitions. [2021-12-06 21:06:36,338 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 119 places, 97 transitions, 446 flow [2021-12-06 21:06:36,339 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-12-06 21:06:36,339 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2021-12-06 21:06:36,340 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 757 transitions. [2021-12-06 21:06:36,341 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8139784946236559 [2021-12-06 21:06:36,341 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 757 transitions. [2021-12-06 21:06:36,341 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 757 transitions. [2021-12-06 21:06:36,341 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-06 21:06:36,341 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 757 transitions. [2021-12-06 21:06:36,343 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 75.7) internal successors, (757), 10 states have internal predecessors, (757), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 21:06:36,345 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 93.0) internal successors, (1023), 11 states have internal predecessors, (1023), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 21:06:36,345 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 93.0) internal successors, (1023), 11 states have internal predecessors, (1023), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 21:06:36,345 INFO L186 Difference]: Start difference. First operand has 117 places, 80 transitions, 273 flow. Second operand 10 states and 757 transitions. [2021-12-06 21:06:36,345 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 119 places, 97 transitions, 446 flow [2021-12-06 21:06:36,347 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 99 places, 97 transitions, 325 flow, removed 52 selfloop flow, removed 20 redundant places. [2021-12-06 21:06:36,348 INFO L242 Difference]: Finished difference. Result has 105 places, 78 transitions, 225 flow [2021-12-06 21:06:36,348 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=93, PETRI_DIFFERENCE_MINUEND_FLOW=204, PETRI_DIFFERENCE_MINUEND_PLACES=90, 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=10, PETRI_FLOW=225, PETRI_PLACES=105, PETRI_TRANSITIONS=78} [2021-12-06 21:06:36,349 INFO L334 CegarLoopForPetriNet]: 96 programPoint places, 9 predicate places. [2021-12-06 21:06:36,349 INFO L470 AbstractCegarLoop]: Abstraction has has 105 places, 78 transitions, 225 flow [2021-12-06 21:06:36,349 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 74.0) internal successors, (518), 7 states have internal predecessors, (518), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 21:06:36,349 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-06 21:06:36,349 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 21:06:36,349 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-12-06 21:06:36,350 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION (and 2 more)] === [2021-12-06 21:06:36,350 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 21:06:36,350 INFO L85 PathProgramCache]: Analyzing trace with hash 703766383, now seen corresponding path program 1 times [2021-12-06 21:06:36,350 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 21:06:36,350 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2095143795] [2021-12-06 21:06:36,350 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 21:06:36,350 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 21:06:36,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-06 21:06:36,376 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-06 21:06:36,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-06 21:06:36,434 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-06 21:06:36,434 INFO L628 BasicCegarLoop]: Counterexample is feasible [2021-12-06 21:06:36,435 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (4 of 5 remaining) [2021-12-06 21:06:36,436 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location P1Err0ASSERT_VIOLATIONERROR_FUNCTION (3 of 5 remaining) [2021-12-06 21:06:36,436 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATION (2 of 5 remaining) [2021-12-06 21:06:36,437 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATION (1 of 5 remaining) [2021-12-06 21:06:36,437 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location P1Err0ASSERT_VIOLATIONERROR_FUNCTION (0 of 5 remaining) [2021-12-06 21:06:36,437 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-12-06 21:06:36,439 INFO L732 BasicCegarLoop]: Path program histogram: [2, 2, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 21:06:36,443 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2021-12-06 21:06:36,443 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-12-06 21:06:36,515 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 06.12 09:06:36 BasicIcfg [2021-12-06 21:06:36,515 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-12-06 21:06:36,515 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-12-06 21:06:36,515 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-12-06 21:06:36,515 INFO L275 PluginConnector]: Witness Printer initialized [2021-12-06 21:06:36,516 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.12 09:06:32" (3/4) ... [2021-12-06 21:06:36,517 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2021-12-06 21:06:36,586 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3552ddc7-aeb7-4786-a221-41c64c059177/bin/uautomizer-DrprNOufMa/witness.graphml [2021-12-06 21:06:36,586 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-12-06 21:06:36,587 INFO L158 Benchmark]: Toolchain (without parser) took 5183.94ms. Allocated memory was 113.2MB in the beginning and 163.6MB in the end (delta: 50.3MB). Free memory was 71.0MB in the beginning and 93.0MB in the end (delta: -22.1MB). Peak memory consumption was 28.2MB. Max. memory is 16.1GB. [2021-12-06 21:06:36,587 INFO L158 Benchmark]: CDTParser took 0.14ms. Allocated memory is still 113.2MB. Free memory is still 88.8MB. There was no memory consumed. Max. memory is 16.1GB. [2021-12-06 21:06:36,587 INFO L158 Benchmark]: CACSL2BoogieTranslator took 366.56ms. Allocated memory is still 113.2MB. Free memory was 70.7MB in the beginning and 76.6MB in the end (delta: -5.9MB). Peak memory consumption was 6.5MB. Max. memory is 16.1GB. [2021-12-06 21:06:36,588 INFO L158 Benchmark]: Boogie Procedure Inliner took 46.52ms. Allocated memory is still 113.2MB. Free memory was 76.6MB in the beginning and 73.7MB in the end (delta: 2.9MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-12-06 21:06:36,588 INFO L158 Benchmark]: Boogie Preprocessor took 28.19ms. Allocated memory is still 113.2MB. Free memory was 73.7MB in the beginning and 71.6MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-12-06 21:06:36,588 INFO L158 Benchmark]: RCFGBuilder took 659.10ms. Allocated memory is still 113.2MB. Free memory was 71.6MB in the beginning and 48.9MB in the end (delta: 22.7MB). Peak memory consumption was 29.0MB. Max. memory is 16.1GB. [2021-12-06 21:06:36,589 INFO L158 Benchmark]: TraceAbstraction took 4007.55ms. Allocated memory was 113.2MB in the beginning and 163.6MB in the end (delta: 50.3MB). Free memory was 48.9MB in the beginning and 110.8MB in the end (delta: -61.9MB). Peak memory consumption was 59.8MB. Max. memory is 16.1GB. [2021-12-06 21:06:36,589 INFO L158 Benchmark]: Witness Printer took 71.37ms. Allocated memory is still 163.6MB. Free memory was 110.8MB in the beginning and 93.0MB in the end (delta: 17.8MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2021-12-06 21:06:36,590 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14ms. Allocated memory is still 113.2MB. Free memory is still 88.8MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 366.56ms. Allocated memory is still 113.2MB. Free memory was 70.7MB in the beginning and 76.6MB in the end (delta: -5.9MB). Peak memory consumption was 6.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 46.52ms. Allocated memory is still 113.2MB. Free memory was 76.6MB in the beginning and 73.7MB in the end (delta: 2.9MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 28.19ms. Allocated memory is still 113.2MB. Free memory was 73.7MB in the beginning and 71.6MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 659.10ms. Allocated memory is still 113.2MB. Free memory was 71.6MB in the beginning and 48.9MB in the end (delta: 22.7MB). Peak memory consumption was 29.0MB. Max. memory is 16.1GB. * TraceAbstraction took 4007.55ms. Allocated memory was 113.2MB in the beginning and 163.6MB in the end (delta: 50.3MB). Free memory was 48.9MB in the beginning and 110.8MB in the end (delta: -61.9MB). Peak memory consumption was 59.8MB. Max. memory is 16.1GB. * Witness Printer took 71.37ms. Allocated memory is still 163.6MB. Free memory was 110.8MB in the beginning and 93.0MB in the end (delta: 17.8MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - CounterExampleResult [Line: 18]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L708] 0 int __unbuffered_cnt = 0; VAL [__unbuffered_cnt=0] [L709] 0 _Bool main$tmp_guard0; VAL [__unbuffered_cnt=0, main$tmp_guard0=0] [L710] 0 _Bool main$tmp_guard1; VAL [__unbuffered_cnt=0, main$tmp_guard0=0, main$tmp_guard1=0] [L712] 0 int x = 0; VAL [__unbuffered_cnt=0, main$tmp_guard0=0, main$tmp_guard1=0, x=0] [L713] 0 _Bool x$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$$choice2=0, x=0, x$flush_delayed=0, x$mem_tmp=0, x$r_buff0_thd0=0, x$r_buff0_thd1=0, x$r_buff0_thd2=0, x$r_buff1_thd0=0, x$r_buff1_thd1=0, x$r_buff1_thd2=0, x$read_delayed=0, x$read_delayed_var={0:0}, x$w_buff0=0, x$w_buff0_used=0, x$w_buff1=0, x$w_buff1_used=0, y=0] [L790] 0 pthread_t t2475; VAL [__unbuffered_cnt=0, main$tmp_guard0=0, main$tmp_guard1=0, t2475={5:0}, weak$$choice0=0, weak$$choice2=0, x=0, x$flush_delayed=0, x$mem_tmp=0, x$r_buff0_thd0=0, x$r_buff0_thd1=0, x$r_buff0_thd2=0, x$r_buff1_thd0=0, x$r_buff1_thd1=0, x$r_buff1_thd2=0, x$read_delayed=0, x$read_delayed_var={0:0}, x$w_buff0=0, x$w_buff0_used=0, x$w_buff1=0, x$w_buff1_used=0, y=0] [L791] FCALL, FORK 0 pthread_create(&t2475, ((void *)0), P0, ((void *)0)) VAL [__unbuffered_cnt=0, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, pthread_create(&t2475, ((void *)0), P0, ((void *)0))=-1, t2475={5:0}, weak$$choice0=0, weak$$choice2=0, x=0, x$flush_delayed=0, x$mem_tmp=0, x$r_buff0_thd0=0, x$r_buff0_thd1=0, x$r_buff0_thd2=0, x$r_buff1_thd0=0, x$r_buff1_thd1=0, x$r_buff1_thd2=0, x$read_delayed=0, x$read_delayed_var={0:0}, x$w_buff0=0, x$w_buff0_used=0, x$w_buff1=0, x$w_buff1_used=0, y=0] [L792] 0 pthread_t t2476; VAL [__unbuffered_cnt=0, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, t2475={5:0}, t2476={3:0}, weak$$choice0=0, weak$$choice2=0, x=0, x$flush_delayed=0, x$mem_tmp=0, x$r_buff0_thd0=0, x$r_buff0_thd1=0, x$r_buff0_thd2=0, x$r_buff1_thd0=0, x$r_buff1_thd1=0, x$r_buff1_thd2=0, x$read_delayed=0, x$read_delayed_var={0:0}, x$w_buff0=0, x$w_buff0_used=0, x$w_buff1=0, x$w_buff1_used=0, y=0] [L793] FCALL, FORK 0 pthread_create(&t2476, ((void *)0), P1, ((void *)0)) VAL [__unbuffered_cnt=0, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, pthread_create(&t2476, ((void *)0), P1, ((void *)0))=0, t2475={5:0}, t2476={3:0}, weak$$choice0=0, weak$$choice2=0, x=0, x$flush_delayed=0, x$mem_tmp=0, x$r_buff0_thd0=0, x$r_buff0_thd1=0, x$r_buff0_thd2=0, x$r_buff1_thd0=0, x$r_buff1_thd1=0, x$r_buff1_thd2=0, x$read_delayed=0, x$read_delayed_var={0:0}, x$w_buff0=0, x$w_buff0_used=0, x$w_buff1=0, x$w_buff1_used=0, y=0] [L754] 2 x$w_buff1 = x$w_buff0 [L755] 2 x$w_buff0 = 2 [L756] 2 x$w_buff1_used = x$w_buff0_used [L757] 2 x$w_buff0_used = (_Bool)1 [L758] CALL 2 __VERIFIER_assert(!(x$w_buff1_used && x$w_buff0_used)) [L18] COND FALSE 2 !(!expression) [L758] RET 2 __VERIFIER_assert(!(x$w_buff1_used && x$w_buff0_used)) [L759] 2 x$r_buff1_thd0 = x$r_buff0_thd0 [L760] 2 x$r_buff1_thd1 = x$r_buff0_thd1 [L761] 2 x$r_buff1_thd2 = x$r_buff0_thd2 [L762] 2 x$r_buff0_thd2 = (_Bool)1 VAL [__unbuffered_cnt=0, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=0, weak$$choice2=0, x=0, x$flush_delayed=0, x$mem_tmp=0, x$r_buff0_thd0=0, x$r_buff0_thd1=0, x$r_buff0_thd2=1, x$r_buff1_thd0=0, x$r_buff1_thd1=0, x$r_buff1_thd2=0, x$read_delayed=0, x$read_delayed_var={0:0}, x$w_buff0=2, x$w_buff0_used=1, x$w_buff1=0, x$w_buff1_used=0, y=0] [L765] 2 y = 1 VAL [__unbuffered_cnt=0, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, weak$$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] [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 [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 [L775] 2 __unbuffered_cnt = __unbuffered_cnt + 1 VAL [__unbuffered_cnt=1, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=0, weak$$choice2=0, x=2, x$flush_delayed=0, x$mem_tmp=0, x$r_buff0_thd0=0, x$r_buff0_thd1=0, x$r_buff0_thd2=1, x$r_buff1_thd0=0, x$r_buff1_thd1=0, x$r_buff1_thd2=0, x$read_delayed=0, x$read_delayed_var={0:0}, x$w_buff0=2, x$w_buff0_used=0, x$w_buff1=0, x$w_buff1_used=0, y=2] [L747] 1 __unbuffered_cnt = __unbuffered_cnt + 1 VAL [__unbuffered_cnt=2, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=0, weak$$choice2=0, x=2, x$flush_delayed=0, x$mem_tmp=0, x$r_buff0_thd0=0, x$r_buff0_thd1=0, x$r_buff0_thd2=1, x$r_buff1_thd0=0, x$r_buff1_thd1=0, x$r_buff1_thd2=0, x$read_delayed=0, x$read_delayed_var={0:0}, x$w_buff0=2, x$w_buff0_used=0, x$w_buff1=0, x$w_buff1_used=0, y=2] [L795] 0 main$tmp_guard0 = __unbuffered_cnt == 2 VAL [__unbuffered_cnt=2, arg={0:0}, arg={0:0}, main$tmp_guard0=1, main$tmp_guard1=0, t2475={5:0}, t2476={3:0}, weak$$choice0=0, weak$$choice2=0, x=2, x$flush_delayed=0, x$mem_tmp=0, x$r_buff0_thd0=0, x$r_buff0_thd1=0, x$r_buff0_thd2=1, x$r_buff1_thd0=0, x$r_buff1_thd1=0, x$r_buff1_thd2=0, x$read_delayed=0, x$read_delayed_var={0:0}, x$w_buff0=2, x$w_buff0_used=0, x$w_buff1=0, x$w_buff1_used=0, y=2] [L797] CALL 0 assume_abort_if_not(main$tmp_guard0) [L3] COND FALSE 0 !(!cond) VAL [\old(cond)=1, __unbuffered_cnt=2, arg={0:0}, arg={0:0}, cond=1, main$tmp_guard0=1, main$tmp_guard1=0, weak$$choice0=0, weak$$choice2=0, x=2, x$flush_delayed=0, x$mem_tmp=0, x$r_buff0_thd0=0, x$r_buff0_thd1=0, x$r_buff0_thd2=1, x$r_buff1_thd0=0, x$r_buff1_thd1=0, x$r_buff1_thd2=0, x$read_delayed=0, x$read_delayed_var={0:0}, x$w_buff0=2, x$w_buff0_used=0, x$w_buff1=0, x$w_buff1_used=0, y=2] [L797] RET 0 assume_abort_if_not(main$tmp_guard0) [L799] EXPR 0 x$w_buff0_used && x$r_buff0_thd0 ? x$w_buff0 : (x$w_buff1_used && x$r_buff1_thd0 ? x$w_buff1 : x) [L799] EXPR 0 x$w_buff1_used && x$r_buff1_thd0 ? x$w_buff1 : x [L799] EXPR 0 x$w_buff0_used && x$r_buff0_thd0 ? x$w_buff0 : (x$w_buff1_used && x$r_buff1_thd0 ? x$w_buff1 : x) [L799] 0 x = x$w_buff0_used && x$r_buff0_thd0 ? x$w_buff0 : (x$w_buff1_used && x$r_buff1_thd0 ? x$w_buff1 : x) [L800] EXPR 0 x$w_buff0_used && x$r_buff0_thd0 ? (_Bool)0 : x$w_buff0_used [L800] 0 x$w_buff0_used = x$w_buff0_used && x$r_buff0_thd0 ? (_Bool)0 : x$w_buff0_used [L801] EXPR 0 x$w_buff0_used && x$r_buff0_thd0 || x$w_buff1_used && x$r_buff1_thd0 ? (_Bool)0 : x$w_buff1_used [L801] 0 x$w_buff1_used = x$w_buff0_used && x$r_buff0_thd0 || x$w_buff1_used && x$r_buff1_thd0 ? (_Bool)0 : x$w_buff1_used [L802] EXPR 0 x$w_buff0_used && x$r_buff0_thd0 ? (_Bool)0 : x$r_buff0_thd0 [L802] 0 x$r_buff0_thd0 = x$w_buff0_used && x$r_buff0_thd0 ? (_Bool)0 : x$r_buff0_thd0 [L803] EXPR 0 x$w_buff0_used && x$r_buff0_thd0 || x$w_buff1_used && x$r_buff1_thd0 ? (_Bool)0 : x$r_buff1_thd0 [L803] 0 x$r_buff1_thd0 = x$w_buff0_used && x$r_buff0_thd0 || x$w_buff1_used && x$r_buff1_thd0 ? (_Bool)0 : x$r_buff1_thd0 [L806] 0 weak$$choice0 = __VERIFIER_nondet_bool() [L807] 0 weak$$choice2 = __VERIFIER_nondet_bool() [L808] 0 x$flush_delayed = weak$$choice2 [L809] 0 x$mem_tmp = x [L810] EXPR 0 !x$w_buff0_used || !x$r_buff0_thd0 && !x$w_buff1_used || !x$r_buff0_thd0 && !x$r_buff1_thd0 ? x : (x$w_buff0_used && x$r_buff0_thd0 ? x$w_buff0 : x$w_buff1) [L810] 0 x = !x$w_buff0_used || !x$r_buff0_thd0 && !x$w_buff1_used || !x$r_buff0_thd0 && !x$r_buff1_thd0 ? x : (x$w_buff0_used && x$r_buff0_thd0 ? x$w_buff0 : x$w_buff1) [L811] EXPR 0 weak$$choice2 ? x$w_buff0 : (!x$w_buff0_used || !x$r_buff0_thd0 && !x$w_buff1_used || !x$r_buff0_thd0 && !x$r_buff1_thd0 ? x$w_buff0 : (x$w_buff0_used && x$r_buff0_thd0 ? x$w_buff0 : x$w_buff0)) [L811] EXPR 0 !x$w_buff0_used || !x$r_buff0_thd0 && !x$w_buff1_used || !x$r_buff0_thd0 && !x$r_buff1_thd0 ? x$w_buff0 : (x$w_buff0_used && x$r_buff0_thd0 ? x$w_buff0 : x$w_buff0) [L811] EXPR 0 weak$$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$w_buff1)) [L812] EXPR 0 !x$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] 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$$choice2 ? x$w_buff0_used : (!x$w_buff0_used || !x$r_buff0_thd0 && !x$w_buff1_used || !x$r_buff0_thd0 && !x$r_buff1_thd0 ? x$w_buff0_used : (x$w_buff0_used && x$r_buff0_thd0 ? (_Bool)0 : x$w_buff0_used)) [L813] EXPR 0 !x$w_buff0_used || !x$r_buff0_thd0 && !x$w_buff1_used || !x$r_buff0_thd0 && !x$r_buff1_thd0 ? x$w_buff0_used : (x$w_buff0_used && x$r_buff0_thd0 ? (_Bool)0 : x$w_buff0_used) [L813] EXPR 0 weak$$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$r_buff0_thd0 ? (_Bool)0 : (_Bool)0)) [L814] EXPR 0 !x$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] 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$$choice2 ? x$r_buff0_thd0 : (!x$w_buff0_used || !x$r_buff0_thd0 && !x$w_buff1_used || !x$r_buff0_thd0 && !x$r_buff1_thd0 ? x$r_buff0_thd0 : (x$w_buff0_used && x$r_buff0_thd0 ? (_Bool)0 : x$r_buff0_thd0)) [L815] EXPR 0 !x$w_buff0_used || !x$r_buff0_thd0 && !x$w_buff1_used || !x$r_buff0_thd0 && !x$r_buff1_thd0 ? x$r_buff0_thd0 : (x$w_buff0_used && x$r_buff0_thd0 ? (_Bool)0 : x$r_buff0_thd0) [L815] EXPR 0 weak$$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$r_buff0_thd0 ? (_Bool)0 : (_Bool)0)) [L816] EXPR 0 !x$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] 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, t2475={5:0}, t2476={3:0}, weak$$choice0=49, weak$$choice2=0, 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] [L821] CALL 0 __VERIFIER_assert(main$tmp_guard1) [L18] COND TRUE 0 !expression VAL [\old(expression)=1, \old(expression)=0, __unbuffered_cnt=2, arg={0:0}, arg={0:0}, expression=1, expression=0, main$tmp_guard0=1, main$tmp_guard1=0, weak$$choice0=49, weak$$choice2=0, 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 [\old(expression)=1, \old(expression)=0, __unbuffered_cnt=2, arg={0:0}, arg={0:0}, expression=0, expression=1, main$tmp_guard0=1, main$tmp_guard1=0, weak$$choice0=49, weak$$choice2=0, x=2, x$flush_delayed=0, x$mem_tmp=2, x$r_buff0_thd0=0, x$r_buff0_thd1=0, x$r_buff0_thd2=1, x$r_buff1_thd0=0, x$r_buff1_thd1=0, x$r_buff1_thd2=0, x$read_delayed=0, x$read_delayed_var={0:0}, x$w_buff0=2, x$w_buff0_used=0, x$w_buff1=0, x$w_buff1_used=0, y=2] - UnprovableResult [Line: 18]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 791]: Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Reason: Not analyzed. - UnprovableResult [Line: 793]: Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 111 locations, 5 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 3.8s, OverallIterations: 11, TraceHistogramMax: 1, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 2.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 353 SdHoareTripleChecker+Valid, 0.9s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 353 mSDsluCounter, 384 SdHoareTripleChecker+Invalid, 0.8s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 503 mSDsCounter, 98 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 930 IncrementalHoareTripleChecker+Invalid, 1028 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 98 mSolverCounterUnsat, 90 mSDtfsCounter, 930 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 128 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 106 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 155 ImplicationChecksByTransitivity, 0.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=363occurred in iteration=8, InterpolantAutomatonStates: 101, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 0.9s InterpolantComputationTime, 712 NumberOfCodeBlocks, 712 NumberOfCodeBlocksAsserted, 11 NumberOfCheckSat, 630 ConstructedInterpolants, 0 QuantifiedInterpolants, 3244 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 10 InterpolantComputations, 10 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! [2021-12-06 21:06:36,621 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3552ddc7-aeb7-4786-a221-41c64c059177/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE