./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/pthread-wmm/mix044.opt.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 6b4ec56b Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a26aa0bf-72c3-4601-910b-96a118f282bd/bin/uautomizer-ug76WZFUDN/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a26aa0bf-72c3-4601-910b-96a118f282bd/bin/uautomizer-ug76WZFUDN/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a26aa0bf-72c3-4601-910b-96a118f282bd/bin/uautomizer-ug76WZFUDN/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a26aa0bf-72c3-4601-910b-96a118f282bd/bin/uautomizer-ug76WZFUDN/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread-wmm/mix044.opt.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a26aa0bf-72c3-4601-910b-96a118f282bd/bin/uautomizer-ug76WZFUDN/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a26aa0bf-72c3-4601-910b-96a118f282bd/bin/uautomizer-ug76WZFUDN --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 bb408c890b0d52a937687fd58d564d57121120b7f4647156375768e776a678b4 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-6b4ec56 [2022-11-20 11:45:23,693 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-20 11:45:23,695 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-20 11:45:23,718 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-20 11:45:23,718 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-20 11:45:23,719 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-20 11:45:23,720 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-20 11:45:23,722 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-20 11:45:23,724 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-20 11:45:23,724 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-20 11:45:23,725 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-20 11:45:23,727 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-20 11:45:23,727 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-20 11:45:23,728 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-20 11:45:23,729 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-20 11:45:23,730 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-20 11:45:23,731 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-20 11:45:23,732 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-20 11:45:23,733 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-20 11:45:23,735 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-20 11:45:23,736 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-20 11:45:23,738 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-20 11:45:23,739 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-20 11:45:23,740 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-20 11:45:23,743 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-20 11:45:23,744 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-20 11:45:23,744 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-20 11:45:23,745 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-20 11:45:23,745 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-20 11:45:23,746 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-20 11:45:23,747 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-20 11:45:23,747 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-20 11:45:23,748 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-20 11:45:23,749 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-20 11:45:23,750 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-20 11:45:23,750 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-20 11:45:23,751 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-20 11:45:23,751 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-20 11:45:23,752 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-20 11:45:23,752 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-20 11:45:23,753 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-20 11:45:23,754 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a26aa0bf-72c3-4601-910b-96a118f282bd/bin/uautomizer-ug76WZFUDN/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-11-20 11:45:23,779 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-20 11:45:23,779 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-20 11:45:23,780 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-20 11:45:23,780 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-20 11:45:23,780 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-20 11:45:23,780 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-20 11:45:23,781 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-20 11:45:23,788 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-20 11:45:23,789 INFO L138 SettingsManager]: * Use SBE=true [2022-11-20 11:45:23,789 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-20 11:45:23,789 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-20 11:45:23,789 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-20 11:45:23,790 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-20 11:45:23,790 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-20 11:45:23,790 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-20 11:45:23,790 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-20 11:45:23,790 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-20 11:45:23,791 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-20 11:45:23,791 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-20 11:45:23,791 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-20 11:45:23,791 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-20 11:45:23,791 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-20 11:45:23,792 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-20 11:45:23,792 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-20 11:45:23,792 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 11:45:23,792 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-20 11:45:23,793 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-20 11:45:23,793 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-20 11:45:23,793 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-20 11:45:23,793 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-20 11:45:23,793 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-20 11:45:23,794 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-20 11:45:23,794 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-20 11:45:23,794 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_a26aa0bf-72c3-4601-910b-96a118f282bd/bin/uautomizer-ug76WZFUDN/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a26aa0bf-72c3-4601-910b-96a118f282bd/bin/uautomizer-ug76WZFUDN Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> bb408c890b0d52a937687fd58d564d57121120b7f4647156375768e776a678b4 [2022-11-20 11:45:24,046 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-20 11:45:24,067 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-20 11:45:24,069 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-20 11:45:24,071 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-20 11:45:24,071 INFO L275 PluginConnector]: CDTParser initialized [2022-11-20 11:45:24,072 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a26aa0bf-72c3-4601-910b-96a118f282bd/bin/uautomizer-ug76WZFUDN/../../sv-benchmarks/c/pthread-wmm/mix044.opt.i [2022-11-20 11:45:27,198 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-20 11:45:27,530 INFO L351 CDTParser]: Found 1 translation units. [2022-11-20 11:45:27,531 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a26aa0bf-72c3-4601-910b-96a118f282bd/sv-benchmarks/c/pthread-wmm/mix044.opt.i [2022-11-20 11:45:27,545 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a26aa0bf-72c3-4601-910b-96a118f282bd/bin/uautomizer-ug76WZFUDN/data/c7152f7e2/ce0e552a3c554d52927e05978c958d11/FLAGfb2ac0498 [2022-11-20 11:45:27,559 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a26aa0bf-72c3-4601-910b-96a118f282bd/bin/uautomizer-ug76WZFUDN/data/c7152f7e2/ce0e552a3c554d52927e05978c958d11 [2022-11-20 11:45:27,561 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-20 11:45:27,563 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-20 11:45:27,564 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-20 11:45:27,564 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-20 11:45:27,568 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-20 11:45:27,569 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 11:45:27" (1/1) ... [2022-11-20 11:45:27,570 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@38c3561c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:45:27, skipping insertion in model container [2022-11-20 11:45:27,570 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 11:45:27" (1/1) ... [2022-11-20 11:45:27,577 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-20 11:45:27,613 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-20 11:45:27,799 WARN L237 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_a26aa0bf-72c3-4601-910b-96a118f282bd/sv-benchmarks/c/pthread-wmm/mix044.opt.i[944,957] [2022-11-20 11:45:28,005 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 11:45:28,015 INFO L203 MainTranslator]: Completed pre-run [2022-11-20 11:45:28,028 WARN L237 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_a26aa0bf-72c3-4601-910b-96a118f282bd/sv-benchmarks/c/pthread-wmm/mix044.opt.i[944,957] [2022-11-20 11:45:28,075 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 11:45:28,135 INFO L208 MainTranslator]: Completed translation [2022-11-20 11:45:28,136 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:45:28 WrapperNode [2022-11-20 11:45:28,136 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-20 11:45:28,138 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-20 11:45:28,138 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-20 11:45:28,138 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-20 11:45:28,146 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:45:28" (1/1) ... [2022-11-20 11:45:28,173 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:45:28" (1/1) ... [2022-11-20 11:45:28,210 INFO L138 Inliner]: procedures = 177, calls = 71, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 166 [2022-11-20 11:45:28,210 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-20 11:45:28,211 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-20 11:45:28,211 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-20 11:45:28,211 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-20 11:45:28,226 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:45:28" (1/1) ... [2022-11-20 11:45:28,229 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:45:28" (1/1) ... [2022-11-20 11:45:28,232 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:45:28" (1/1) ... [2022-11-20 11:45:28,237 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:45:28" (1/1) ... [2022-11-20 11:45:28,245 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:45:28" (1/1) ... [2022-11-20 11:45:28,256 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:45:28" (1/1) ... [2022-11-20 11:45:28,258 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:45:28" (1/1) ... [2022-11-20 11:45:28,259 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:45:28" (1/1) ... [2022-11-20 11:45:28,277 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-20 11:45:28,278 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-20 11:45:28,278 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-20 11:45:28,279 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-20 11:45:28,279 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:45:28" (1/1) ... [2022-11-20 11:45:28,295 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 11:45:28,314 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a26aa0bf-72c3-4601-910b-96a118f282bd/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:45:28,332 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a26aa0bf-72c3-4601-910b-96a118f282bd/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-20 11:45:28,333 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a26aa0bf-72c3-4601-910b-96a118f282bd/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-20 11:45:28,366 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-20 11:45:28,366 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-11-20 11:45:28,366 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-20 11:45:28,366 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-20 11:45:28,367 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-20 11:45:28,367 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2022-11-20 11:45:28,367 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2022-11-20 11:45:28,368 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2022-11-20 11:45:28,368 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2022-11-20 11:45:28,368 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2022-11-20 11:45:28,369 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2022-11-20 11:45:28,370 INFO L130 BoogieDeclarations]: Found specification of procedure P3 [2022-11-20 11:45:28,370 INFO L138 BoogieDeclarations]: Found implementation of procedure P3 [2022-11-20 11:45:28,370 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-20 11:45:28,371 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-11-20 11:45:28,371 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-20 11:45:28,371 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-20 11:45:28,372 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-20 11:45:28,519 INFO L235 CfgBuilder]: Building ICFG [2022-11-20 11:45:28,522 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-20 11:45:28,967 INFO L276 CfgBuilder]: Performing block encoding [2022-11-20 11:45:29,214 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-20 11:45:29,215 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-11-20 11:45:29,217 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 11:45:29 BoogieIcfgContainer [2022-11-20 11:45:29,218 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-20 11:45:29,220 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-20 11:45:29,221 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-20 11:45:29,230 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-20 11:45:29,230 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 11:45:27" (1/3) ... [2022-11-20 11:45:29,232 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@20cdb14c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 11:45:29, skipping insertion in model container [2022-11-20 11:45:29,233 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:45:28" (2/3) ... [2022-11-20 11:45:29,234 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@20cdb14c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 11:45:29, skipping insertion in model container [2022-11-20 11:45:29,234 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 11:45:29" (3/3) ... [2022-11-20 11:45:29,235 INFO L112 eAbstractionObserver]: Analyzing ICFG mix044.opt.i [2022-11-20 11:45:29,246 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-20 11:45:29,257 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-20 11:45:29,257 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-11-20 11:45:29,257 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-20 11:45:29,336 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-11-20 11:45:29,376 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 148 places, 137 transitions, 294 flow [2022-11-20 11:45:29,442 INFO L130 PetriNetUnfolder]: 2/133 cut-off events. [2022-11-20 11:45:29,442 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-20 11:45:29,448 INFO L83 FinitePrefix]: Finished finitePrefix Result has 146 conditions, 133 events. 2/133 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 70 event pairs, 0 based on Foata normal form. 0/129 useless extension candidates. Maximal degree in co-relation 91. Up to 2 conditions per place. [2022-11-20 11:45:29,448 INFO L82 GeneralOperation]: Start removeDead. Operand has 148 places, 137 transitions, 294 flow [2022-11-20 11:45:29,453 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 144 places, 133 transitions, 278 flow [2022-11-20 11:45:29,464 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-20 11:45:29,471 INFO L357 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, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@442d70f5, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-20 11:45:29,471 INFO L358 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2022-11-20 11:45:29,507 INFO L130 PetriNetUnfolder]: 0/90 cut-off events. [2022-11-20 11:45:29,508 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-20 11:45:29,508 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:45:29,509 INFO L209 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] [2022-11-20 11:45:29,509 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting P3Err0ASSERT_VIOLATIONERROR_FUNCTION === [P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-11-20 11:45:29,515 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:45:29,515 INFO L85 PathProgramCache]: Analyzing trace with hash -1020769699, now seen corresponding path program 1 times [2022-11-20 11:45:29,525 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:45:29,526 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1346586751] [2022-11-20 11:45:29,527 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:45:29,528 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:45:29,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:45:30,314 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:45:30,315 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:45:30,315 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1346586751] [2022-11-20 11:45:30,316 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1346586751] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:45:30,317 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:45:30,317 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-20 11:45:30,320 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1837452780] [2022-11-20 11:45:30,321 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:45:30,330 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 11:45:30,331 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:45:30,366 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 11:45:30,368 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 11:45:30,370 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 123 out of 137 [2022-11-20 11:45:30,374 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 144 places, 133 transitions, 278 flow. Second operand has 3 states, 3 states have (on average 125.0) internal successors, (375), 3 states have internal predecessors, (375), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:45:30,375 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:45:30,375 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 123 of 137 [2022-11-20 11:45:30,376 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:45:30,564 INFO L130 PetriNetUnfolder]: 17/277 cut-off events. [2022-11-20 11:45:30,564 INFO L131 PetriNetUnfolder]: For 5/5 co-relation queries the response was YES. [2022-11-20 11:45:30,568 INFO L83 FinitePrefix]: Finished finitePrefix Result has 333 conditions, 277 events. 17/277 cut-off events. For 5/5 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 827 event pairs, 7 based on Foata normal form. 9/275 useless extension candidates. Maximal degree in co-relation 275. Up to 27 conditions per place. [2022-11-20 11:45:30,571 INFO L137 encePairwiseOnDemand]: 132/137 looper letters, 11 selfloop transitions, 2 changer transitions 0/132 dead transitions. [2022-11-20 11:45:30,571 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 144 places, 132 transitions, 302 flow [2022-11-20 11:45:30,572 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 11:45:30,575 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-20 11:45:30,588 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 387 transitions. [2022-11-20 11:45:30,593 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9416058394160584 [2022-11-20 11:45:30,594 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 387 transitions. [2022-11-20 11:45:30,595 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 387 transitions. [2022-11-20 11:45:30,599 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:45:30,602 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 387 transitions. [2022-11-20 11:45:30,609 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 129.0) internal successors, (387), 3 states have internal predecessors, (387), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:45:30,619 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 137.0) internal successors, (548), 4 states have internal predecessors, (548), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:45:30,620 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 137.0) internal successors, (548), 4 states have internal predecessors, (548), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:45:30,622 INFO L175 Difference]: Start difference. First operand has 144 places, 133 transitions, 278 flow. Second operand 3 states and 387 transitions. [2022-11-20 11:45:30,623 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 144 places, 132 transitions, 302 flow [2022-11-20 11:45:30,627 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 140 places, 132 transitions, 298 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-11-20 11:45:30,633 INFO L231 Difference]: Finished difference. Result has 140 places, 129 transitions, 270 flow [2022-11-20 11:45:30,636 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=137, PETRI_DIFFERENCE_MINUEND_FLOW=266, PETRI_DIFFERENCE_MINUEND_PLACES=138, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=129, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=127, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=270, PETRI_PLACES=140, PETRI_TRANSITIONS=129} [2022-11-20 11:45:30,640 INFO L288 CegarLoopForPetriNet]: 144 programPoint places, -4 predicate places. [2022-11-20 11:45:30,641 INFO L495 AbstractCegarLoop]: Abstraction has has 140 places, 129 transitions, 270 flow [2022-11-20 11:45:30,641 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 125.0) internal successors, (375), 3 states have internal predecessors, (375), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:45:30,641 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:45:30,642 INFO L209 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:45:30,642 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-20 11:45:30,643 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-11-20 11:45:30,645 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:45:30,645 INFO L85 PathProgramCache]: Analyzing trace with hash 890165960, now seen corresponding path program 1 times [2022-11-20 11:45:30,645 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:45:30,646 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1268466514] [2022-11-20 11:45:30,646 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:45:30,646 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:45:30,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:45:32,046 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:45:32,047 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:45:32,047 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1268466514] [2022-11-20 11:45:32,047 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1268466514] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:45:32,047 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:45:32,047 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-20 11:45:32,048 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1655190324] [2022-11-20 11:45:32,048 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:45:32,049 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-20 11:45:32,049 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:45:32,050 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-20 11:45:32,050 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-11-20 11:45:32,052 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 101 out of 137 [2022-11-20 11:45:32,053 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 140 places, 129 transitions, 270 flow. Second operand has 7 states, 7 states have (on average 104.14285714285714) internal successors, (729), 7 states have internal predecessors, (729), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:45:32,053 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:45:32,053 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 101 of 137 [2022-11-20 11:45:32,054 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:45:34,320 INFO L130 PetriNetUnfolder]: 3015/7296 cut-off events. [2022-11-20 11:45:34,320 INFO L131 PetriNetUnfolder]: For 126/126 co-relation queries the response was YES. [2022-11-20 11:45:34,347 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11838 conditions, 7296 events. 3015/7296 cut-off events. For 126/126 co-relation queries the response was YES. Maximal size of possible extension queue 418. Compared 66149 event pairs, 390 based on Foata normal form. 0/7145 useless extension candidates. Maximal degree in co-relation 11771. Up to 1667 conditions per place. [2022-11-20 11:45:34,367 INFO L137 encePairwiseOnDemand]: 124/137 looper letters, 39 selfloop transitions, 9 changer transitions 89/221 dead transitions. [2022-11-20 11:45:34,368 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 152 places, 221 transitions, 708 flow [2022-11-20 11:45:34,368 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-20 11:45:34,368 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2022-11-20 11:45:34,371 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1440 transitions. [2022-11-20 11:45:34,372 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8085345311622684 [2022-11-20 11:45:34,372 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 1440 transitions. [2022-11-20 11:45:34,372 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 1440 transitions. [2022-11-20 11:45:34,373 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:45:34,373 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 1440 transitions. [2022-11-20 11:45:34,377 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 110.76923076923077) internal successors, (1440), 13 states have internal predecessors, (1440), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:45:34,381 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 137.0) internal successors, (1918), 14 states have internal predecessors, (1918), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:45:34,382 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 137.0) internal successors, (1918), 14 states have internal predecessors, (1918), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:45:34,382 INFO L175 Difference]: Start difference. First operand has 140 places, 129 transitions, 270 flow. Second operand 13 states and 1440 transitions. [2022-11-20 11:45:34,383 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 152 places, 221 transitions, 708 flow [2022-11-20 11:45:34,387 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 150 places, 221 transitions, 698 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-20 11:45:34,390 INFO L231 Difference]: Finished difference. Result has 162 places, 122 transitions, 360 flow [2022-11-20 11:45:34,391 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=137, PETRI_DIFFERENCE_MINUEND_FLOW=266, PETRI_DIFFERENCE_MINUEND_PLACES=138, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=129, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=120, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=360, PETRI_PLACES=162, PETRI_TRANSITIONS=122} [2022-11-20 11:45:34,391 INFO L288 CegarLoopForPetriNet]: 144 programPoint places, 18 predicate places. [2022-11-20 11:45:34,392 INFO L495 AbstractCegarLoop]: Abstraction has has 162 places, 122 transitions, 360 flow [2022-11-20 11:45:34,393 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 104.14285714285714) internal successors, (729), 7 states have internal predecessors, (729), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:45:34,393 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:45:34,393 INFO L209 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:45:34,393 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-20 11:45:34,393 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-11-20 11:45:34,395 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:45:34,395 INFO L85 PathProgramCache]: Analyzing trace with hash -1351829307, now seen corresponding path program 1 times [2022-11-20 11:45:34,395 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:45:34,396 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [696745697] [2022-11-20 11:45:34,396 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:45:34,397 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:45:34,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:45:35,647 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:45:35,647 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:45:35,647 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [696745697] [2022-11-20 11:45:35,647 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [696745697] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:45:35,648 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:45:35,648 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-11-20 11:45:35,648 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1936392507] [2022-11-20 11:45:35,648 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:45:35,649 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-20 11:45:35,649 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:45:35,649 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-20 11:45:35,649 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2022-11-20 11:45:35,651 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 111 out of 137 [2022-11-20 11:45:35,653 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 162 places, 122 transitions, 360 flow. Second operand has 12 states, 12 states have (on average 112.5) internal successors, (1350), 12 states have internal predecessors, (1350), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:45:35,653 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:45:35,653 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 111 of 137 [2022-11-20 11:45:35,653 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:45:36,699 INFO L130 PetriNetUnfolder]: 1160/2621 cut-off events. [2022-11-20 11:45:36,699 INFO L131 PetriNetUnfolder]: For 5731/6639 co-relation queries the response was YES. [2022-11-20 11:45:36,714 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8794 conditions, 2621 events. 1160/2621 cut-off events. For 5731/6639 co-relation queries the response was YES. Maximal size of possible extension queue 221. Compared 19708 event pairs, 610 based on Foata normal form. 126/2625 useless extension candidates. Maximal degree in co-relation 8720. Up to 1242 conditions per place. [2022-11-20 11:45:36,729 INFO L137 encePairwiseOnDemand]: 124/137 looper letters, 22 selfloop transitions, 11 changer transitions 31/162 dead transitions. [2022-11-20 11:45:36,729 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 153 places, 162 transitions, 726 flow [2022-11-20 11:45:36,730 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-20 11:45:36,730 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2022-11-20 11:45:36,733 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 1717 transitions. [2022-11-20 11:45:36,734 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8355231143552312 [2022-11-20 11:45:36,734 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 1717 transitions. [2022-11-20 11:45:36,734 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 1717 transitions. [2022-11-20 11:45:36,735 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:45:36,736 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 1717 transitions. [2022-11-20 11:45:36,740 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 114.46666666666667) internal successors, (1717), 15 states have internal predecessors, (1717), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:45:36,744 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 137.0) internal successors, (2192), 16 states have internal predecessors, (2192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:45:36,745 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 137.0) internal successors, (2192), 16 states have internal predecessors, (2192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:45:36,746 INFO L175 Difference]: Start difference. First operand has 162 places, 122 transitions, 360 flow. Second operand 15 states and 1717 transitions. [2022-11-20 11:45:36,746 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 153 places, 162 transitions, 726 flow [2022-11-20 11:45:36,768 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 149 places, 162 transitions, 696 flow, removed 14 selfloop flow, removed 4 redundant places. [2022-11-20 11:45:36,771 INFO L231 Difference]: Finished difference. Result has 157 places, 127 transitions, 431 flow [2022-11-20 11:45:36,772 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=137, PETRI_DIFFERENCE_MINUEND_FLOW=346, PETRI_DIFFERENCE_MINUEND_PLACES=135, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=122, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=112, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=431, PETRI_PLACES=157, PETRI_TRANSITIONS=127} [2022-11-20 11:45:36,774 INFO L288 CegarLoopForPetriNet]: 144 programPoint places, 13 predicate places. [2022-11-20 11:45:36,774 INFO L495 AbstractCegarLoop]: Abstraction has has 157 places, 127 transitions, 431 flow [2022-11-20 11:45:36,777 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 112.5) internal successors, (1350), 12 states have internal predecessors, (1350), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:45:36,777 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:45:36,777 INFO L209 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:45:36,778 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-20 11:45:36,778 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-11-20 11:45:36,780 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:45:36,780 INFO L85 PathProgramCache]: Analyzing trace with hash -37925084, now seen corresponding path program 1 times [2022-11-20 11:45:36,780 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:45:36,781 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1988862033] [2022-11-20 11:45:36,781 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:45:36,782 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:45:36,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:45:37,185 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:45:37,186 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:45:37,186 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1988862033] [2022-11-20 11:45:37,186 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1988862033] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:45:37,186 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:45:37,187 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-20 11:45:37,187 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [635025037] [2022-11-20 11:45:37,187 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:45:37,188 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-20 11:45:37,188 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:45:37,188 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-20 11:45:37,189 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-20 11:45:37,190 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 115 out of 137 [2022-11-20 11:45:37,191 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 157 places, 127 transitions, 431 flow. Second operand has 6 states, 6 states have (on average 117.33333333333333) internal successors, (704), 6 states have internal predecessors, (704), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:45:37,191 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:45:37,191 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 115 of 137 [2022-11-20 11:45:37,191 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:45:37,994 INFO L130 PetriNetUnfolder]: 1129/2724 cut-off events. [2022-11-20 11:45:37,994 INFO L131 PetriNetUnfolder]: For 9370/10348 co-relation queries the response was YES. [2022-11-20 11:45:38,010 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10222 conditions, 2724 events. 1129/2724 cut-off events. For 9370/10348 co-relation queries the response was YES. Maximal size of possible extension queue 200. Compared 20642 event pairs, 535 based on Foata normal form. 71/2693 useless extension candidates. Maximal degree in co-relation 10142. Up to 1150 conditions per place. [2022-11-20 11:45:38,027 INFO L137 encePairwiseOnDemand]: 130/137 looper letters, 41 selfloop transitions, 15 changer transitions 21/179 dead transitions. [2022-11-20 11:45:38,028 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 159 places, 179 transitions, 1064 flow [2022-11-20 11:45:38,028 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-20 11:45:38,029 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-11-20 11:45:38,030 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1094 transitions. [2022-11-20 11:45:38,031 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8872668288726683 [2022-11-20 11:45:38,031 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1094 transitions. [2022-11-20 11:45:38,032 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1094 transitions. [2022-11-20 11:45:38,032 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:45:38,033 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1094 transitions. [2022-11-20 11:45:38,035 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 121.55555555555556) internal successors, (1094), 9 states have internal predecessors, (1094), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:45:38,038 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 137.0) internal successors, (1370), 10 states have internal predecessors, (1370), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:45:38,038 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 137.0) internal successors, (1370), 10 states have internal predecessors, (1370), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:45:38,039 INFO L175 Difference]: Start difference. First operand has 157 places, 127 transitions, 431 flow. Second operand 9 states and 1094 transitions. [2022-11-20 11:45:38,039 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 159 places, 179 transitions, 1064 flow [2022-11-20 11:45:38,066 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 148 places, 179 transitions, 1028 flow, removed 13 selfloop flow, removed 11 redundant places. [2022-11-20 11:45:38,068 INFO L231 Difference]: Finished difference. Result has 153 places, 141 transitions, 580 flow [2022-11-20 11:45:38,069 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=137, PETRI_DIFFERENCE_MINUEND_FLOW=409, PETRI_DIFFERENCE_MINUEND_PLACES=140, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=127, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=120, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=580, PETRI_PLACES=153, PETRI_TRANSITIONS=141} [2022-11-20 11:45:38,070 INFO L288 CegarLoopForPetriNet]: 144 programPoint places, 9 predicate places. [2022-11-20 11:45:38,070 INFO L495 AbstractCegarLoop]: Abstraction has has 153 places, 141 transitions, 580 flow [2022-11-20 11:45:38,071 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 117.33333333333333) internal successors, (704), 6 states have internal predecessors, (704), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:45:38,071 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:45:38,071 INFO L209 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:45:38,071 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-20 11:45:38,072 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-11-20 11:45:38,072 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:45:38,072 INFO L85 PathProgramCache]: Analyzing trace with hash -1957316349, now seen corresponding path program 1 times [2022-11-20 11:45:38,072 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:45:38,073 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [196067957] [2022-11-20 11:45:38,073 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:45:38,073 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:45:38,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:45:38,505 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:45:38,505 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:45:38,505 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [196067957] [2022-11-20 11:45:38,505 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [196067957] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:45:38,506 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:45:38,506 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-20 11:45:38,506 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [27567070] [2022-11-20 11:45:38,506 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:45:38,507 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-20 11:45:38,507 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:45:38,507 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-20 11:45:38,508 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-20 11:45:38,509 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 112 out of 137 [2022-11-20 11:45:38,510 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 153 places, 141 transitions, 580 flow. Second operand has 6 states, 6 states have (on average 114.5) internal successors, (687), 6 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) [2022-11-20 11:45:38,510 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:45:38,511 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 112 of 137 [2022-11-20 11:45:38,511 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:45:41,747 INFO L130 PetriNetUnfolder]: 7271/13660 cut-off events. [2022-11-20 11:45:41,748 INFO L131 PetriNetUnfolder]: For 46300/51355 co-relation queries the response was YES. [2022-11-20 11:45:41,870 INFO L83 FinitePrefix]: Finished finitePrefix Result has 43072 conditions, 13660 events. 7271/13660 cut-off events. For 46300/51355 co-relation queries the response was YES. Maximal size of possible extension queue 1074. Compared 120920 event pairs, 1157 based on Foata normal form. 13/12671 useless extension candidates. Maximal degree in co-relation 42996. Up to 4380 conditions per place. [2022-11-20 11:45:41,966 INFO L137 encePairwiseOnDemand]: 126/137 looper letters, 96 selfloop transitions, 20 changer transitions 8/237 dead transitions. [2022-11-20 11:45:41,967 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 162 places, 237 transitions, 1474 flow [2022-11-20 11:45:41,968 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-20 11:45:41,969 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-11-20 11:45:41,971 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1204 transitions. [2022-11-20 11:45:41,972 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8788321167883212 [2022-11-20 11:45:41,973 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1204 transitions. [2022-11-20 11:45:41,973 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1204 transitions. [2022-11-20 11:45:41,974 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:45:41,974 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1204 transitions. [2022-11-20 11:45:41,978 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 120.4) internal successors, (1204), 10 states have internal predecessors, (1204), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:45:41,981 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 137.0) internal successors, (1507), 11 states have internal predecessors, (1507), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:45:41,982 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 137.0) internal successors, (1507), 11 states have internal predecessors, (1507), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:45:41,982 INFO L175 Difference]: Start difference. First operand has 153 places, 141 transitions, 580 flow. Second operand 10 states and 1204 transitions. [2022-11-20 11:45:41,982 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 162 places, 237 transitions, 1474 flow [2022-11-20 11:45:42,082 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 162 places, 237 transitions, 1474 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-20 11:45:42,086 INFO L231 Difference]: Finished difference. Result has 168 places, 159 transitions, 723 flow [2022-11-20 11:45:42,086 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=137, PETRI_DIFFERENCE_MINUEND_FLOW=580, PETRI_DIFFERENCE_MINUEND_PLACES=153, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=141, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=131, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=723, PETRI_PLACES=168, PETRI_TRANSITIONS=159} [2022-11-20 11:45:42,087 INFO L288 CegarLoopForPetriNet]: 144 programPoint places, 24 predicate places. [2022-11-20 11:45:42,088 INFO L495 AbstractCegarLoop]: Abstraction has has 168 places, 159 transitions, 723 flow [2022-11-20 11:45:42,088 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 114.5) internal successors, (687), 6 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) [2022-11-20 11:45:42,088 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:45:42,089 INFO L209 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:45:42,089 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-20 11:45:42,089 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-11-20 11:45:42,090 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:45:42,090 INFO L85 PathProgramCache]: Analyzing trace with hash 184414641, now seen corresponding path program 1 times [2022-11-20 11:45:42,090 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:45:42,091 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1011305871] [2022-11-20 11:45:42,091 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:45:42,091 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:45:42,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:45:42,544 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:45:42,544 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:45:42,544 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1011305871] [2022-11-20 11:45:42,544 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1011305871] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:45:42,545 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:45:42,545 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-20 11:45:42,545 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [13683122] [2022-11-20 11:45:42,545 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:45:42,546 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-20 11:45:42,546 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:45:42,547 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-20 11:45:42,548 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-11-20 11:45:42,548 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 112 out of 137 [2022-11-20 11:45:42,551 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 168 places, 159 transitions, 723 flow. Second operand has 7 states, 7 states have (on average 114.28571428571429) internal successors, (800), 7 states have internal predecessors, (800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:45:42,551 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:45:42,551 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 112 of 137 [2022-11-20 11:45:42,551 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:45:45,581 INFO L130 PetriNetUnfolder]: 6413/12649 cut-off events. [2022-11-20 11:45:45,581 INFO L131 PetriNetUnfolder]: For 56595/62527 co-relation queries the response was YES. [2022-11-20 11:45:45,686 INFO L83 FinitePrefix]: Finished finitePrefix Result has 51593 conditions, 12649 events. 6413/12649 cut-off events. For 56595/62527 co-relation queries the response was YES. Maximal size of possible extension queue 1091. Compared 117955 event pairs, 443 based on Foata normal form. 728/12804 useless extension candidates. Maximal degree in co-relation 51508. Up to 3752 conditions per place. [2022-11-20 11:45:45,757 INFO L137 encePairwiseOnDemand]: 126/137 looper letters, 120 selfloop transitions, 38 changer transitions 25/286 dead transitions. [2022-11-20 11:45:45,758 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 180 places, 286 transitions, 2169 flow [2022-11-20 11:45:45,759 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-20 11:45:45,759 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2022-11-20 11:45:45,763 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1568 transitions. [2022-11-20 11:45:45,764 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8804042672655812 [2022-11-20 11:45:45,765 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 1568 transitions. [2022-11-20 11:45:45,765 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 1568 transitions. [2022-11-20 11:45:45,766 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:45:45,767 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 1568 transitions. [2022-11-20 11:45:45,772 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 120.61538461538461) internal successors, (1568), 13 states have internal predecessors, (1568), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:45:45,777 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 137.0) internal successors, (1918), 14 states have internal predecessors, (1918), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:45:45,778 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 137.0) internal successors, (1918), 14 states have internal predecessors, (1918), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:45:45,779 INFO L175 Difference]: Start difference. First operand has 168 places, 159 transitions, 723 flow. Second operand 13 states and 1568 transitions. [2022-11-20 11:45:45,779 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 180 places, 286 transitions, 2169 flow [2022-11-20 11:45:46,054 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 179 places, 286 transitions, 2131 flow, removed 18 selfloop flow, removed 1 redundant places. [2022-11-20 11:45:46,059 INFO L231 Difference]: Finished difference. Result has 185 places, 168 transitions, 897 flow [2022-11-20 11:45:46,060 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=137, PETRI_DIFFERENCE_MINUEND_FLOW=685, PETRI_DIFFERENCE_MINUEND_PLACES=167, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=159, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=133, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=897, PETRI_PLACES=185, PETRI_TRANSITIONS=168} [2022-11-20 11:45:46,061 INFO L288 CegarLoopForPetriNet]: 144 programPoint places, 41 predicate places. [2022-11-20 11:45:46,061 INFO L495 AbstractCegarLoop]: Abstraction has has 185 places, 168 transitions, 897 flow [2022-11-20 11:45:46,062 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 114.28571428571429) internal successors, (800), 7 states have internal predecessors, (800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:45:46,062 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:45:46,062 INFO L209 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:45:46,062 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-20 11:45:46,063 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-11-20 11:45:46,063 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:45:46,064 INFO L85 PathProgramCache]: Analyzing trace with hash -882967152, now seen corresponding path program 1 times [2022-11-20 11:45:46,064 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:45:46,064 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1219881217] [2022-11-20 11:45:46,064 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:45:46,065 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:45:46,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:45:47,322 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:45:47,322 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:45:47,322 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1219881217] [2022-11-20 11:45:47,323 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1219881217] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:45:47,323 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:45:47,323 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-20 11:45:47,323 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1450908900] [2022-11-20 11:45:47,323 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:45:47,324 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-20 11:45:47,324 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:45:47,324 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-20 11:45:47,324 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-11-20 11:45:47,325 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 99 out of 137 [2022-11-20 11:45:47,326 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 185 places, 168 transitions, 897 flow. Second operand has 8 states, 8 states have (on average 102.625) internal successors, (821), 8 states have internal predecessors, (821), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:45:47,327 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:45:47,327 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 99 of 137 [2022-11-20 11:45:47,327 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:45:49,898 INFO L130 PetriNetUnfolder]: 3268/10839 cut-off events. [2022-11-20 11:45:49,898 INFO L131 PetriNetUnfolder]: For 43623/52759 co-relation queries the response was YES. [2022-11-20 11:45:49,999 INFO L83 FinitePrefix]: Finished finitePrefix Result has 41329 conditions, 10839 events. 3268/10839 cut-off events. For 43623/52759 co-relation queries the response was YES. Maximal size of possible extension queue 1129. Compared 133196 event pairs, 251 based on Foata normal form. 194/10404 useless extension candidates. Maximal degree in co-relation 41225. Up to 2771 conditions per place. [2022-11-20 11:45:50,067 INFO L137 encePairwiseOnDemand]: 119/137 looper letters, 111 selfloop transitions, 27 changer transitions 0/258 dead transitions. [2022-11-20 11:45:50,067 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 187 places, 258 transitions, 1932 flow [2022-11-20 11:45:50,068 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-20 11:45:50,068 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-11-20 11:45:50,070 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 991 transitions. [2022-11-20 11:45:50,071 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8037307380373074 [2022-11-20 11:45:50,071 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 991 transitions. [2022-11-20 11:45:50,071 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 991 transitions. [2022-11-20 11:45:50,072 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:45:50,072 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 991 transitions. [2022-11-20 11:45:50,075 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 110.11111111111111) internal successors, (991), 9 states have internal predecessors, (991), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:45:50,077 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 137.0) internal successors, (1370), 10 states have internal predecessors, (1370), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:45:50,078 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 137.0) internal successors, (1370), 10 states have internal predecessors, (1370), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:45:50,078 INFO L175 Difference]: Start difference. First operand has 185 places, 168 transitions, 897 flow. Second operand 9 states and 991 transitions. [2022-11-20 11:45:50,078 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 187 places, 258 transitions, 1932 flow [2022-11-20 11:45:51,471 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 180 places, 258 transitions, 1809 flow, removed 52 selfloop flow, removed 7 redundant places. [2022-11-20 11:45:51,475 INFO L231 Difference]: Finished difference. Result has 186 places, 187 transitions, 1088 flow [2022-11-20 11:45:51,476 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=137, PETRI_DIFFERENCE_MINUEND_FLOW=796, PETRI_DIFFERENCE_MINUEND_PLACES=172, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=168, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=141, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1088, PETRI_PLACES=186, PETRI_TRANSITIONS=187} [2022-11-20 11:45:51,477 INFO L288 CegarLoopForPetriNet]: 144 programPoint places, 42 predicate places. [2022-11-20 11:45:51,477 INFO L495 AbstractCegarLoop]: Abstraction has has 186 places, 187 transitions, 1088 flow [2022-11-20 11:45:51,477 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 102.625) internal successors, (821), 8 states have internal predecessors, (821), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:45:51,478 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:45:51,478 INFO L209 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:45:51,478 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-20 11:45:51,478 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-11-20 11:45:51,479 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:45:51,479 INFO L85 PathProgramCache]: Analyzing trace with hash 1087701076, now seen corresponding path program 2 times [2022-11-20 11:45:51,479 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:45:51,479 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1944025580] [2022-11-20 11:45:51,480 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:45:51,480 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:45:51,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:45:51,767 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:45:51,767 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:45:51,767 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1944025580] [2022-11-20 11:45:51,768 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1944025580] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:45:51,768 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:45:51,768 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-20 11:45:51,768 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1964637818] [2022-11-20 11:45:51,768 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:45:51,769 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-20 11:45:51,769 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:45:51,769 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-20 11:45:51,770 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-20 11:45:51,770 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 115 out of 137 [2022-11-20 11:45:51,771 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 186 places, 187 transitions, 1088 flow. Second operand has 6 states, 6 states have (on average 117.5) internal successors, (705), 6 states have internal predecessors, (705), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:45:51,772 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:45:51,772 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 115 of 137 [2022-11-20 11:45:51,772 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:45:54,529 INFO L130 PetriNetUnfolder]: 3882/13665 cut-off events. [2022-11-20 11:45:54,530 INFO L131 PetriNetUnfolder]: For 50602/53793 co-relation queries the response was YES. [2022-11-20 11:45:54,630 INFO L83 FinitePrefix]: Finished finitePrefix Result has 47912 conditions, 13665 events. 3882/13665 cut-off events. For 50602/53793 co-relation queries the response was YES. Maximal size of possible extension queue 1337. Compared 178270 event pairs, 640 based on Foata normal form. 353/13201 useless extension candidates. Maximal degree in co-relation 47813. Up to 2604 conditions per place. [2022-11-20 11:45:54,693 INFO L137 encePairwiseOnDemand]: 131/137 looper letters, 56 selfloop transitions, 23 changer transitions 6/229 dead transitions. [2022-11-20 11:45:54,693 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 194 places, 229 transitions, 1729 flow [2022-11-20 11:45:54,695 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-20 11:45:54,695 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-11-20 11:45:54,698 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1088 transitions. [2022-11-20 11:45:54,699 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8824006488240065 [2022-11-20 11:45:54,699 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1088 transitions. [2022-11-20 11:45:54,699 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1088 transitions. [2022-11-20 11:45:54,700 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:45:54,700 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1088 transitions. [2022-11-20 11:45:54,702 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 120.88888888888889) internal successors, (1088), 9 states have internal predecessors, (1088), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:45:54,705 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 137.0) internal successors, (1370), 10 states have internal predecessors, (1370), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:45:54,705 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 137.0) internal successors, (1370), 10 states have internal predecessors, (1370), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:45:54,706 INFO L175 Difference]: Start difference. First operand has 186 places, 187 transitions, 1088 flow. Second operand 9 states and 1088 transitions. [2022-11-20 11:45:54,706 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 194 places, 229 transitions, 1729 flow [2022-11-20 11:45:55,397 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 192 places, 229 transitions, 1716 flow, removed 2 selfloop flow, removed 2 redundant places. [2022-11-20 11:45:55,400 INFO L231 Difference]: Finished difference. Result has 199 places, 200 transitions, 1337 flow [2022-11-20 11:45:55,401 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=137, PETRI_DIFFERENCE_MINUEND_FLOW=1077, PETRI_DIFFERENCE_MINUEND_PLACES=184, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=187, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=171, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1337, PETRI_PLACES=199, PETRI_TRANSITIONS=200} [2022-11-20 11:45:55,402 INFO L288 CegarLoopForPetriNet]: 144 programPoint places, 55 predicate places. [2022-11-20 11:45:55,402 INFO L495 AbstractCegarLoop]: Abstraction has has 199 places, 200 transitions, 1337 flow [2022-11-20 11:45:55,402 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 117.5) internal successors, (705), 6 states have internal predecessors, (705), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:45:55,403 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:45:55,403 INFO L209 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:45:55,403 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-20 11:45:55,403 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-11-20 11:45:55,404 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:45:55,404 INFO L85 PathProgramCache]: Analyzing trace with hash 95198650, now seen corresponding path program 1 times [2022-11-20 11:45:55,404 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:45:55,404 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1949307908] [2022-11-20 11:45:55,404 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:45:55,405 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:45:55,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:45:55,729 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:45:55,730 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:45:55,730 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1949307908] [2022-11-20 11:45:55,730 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1949307908] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:45:55,730 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:45:55,730 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-20 11:45:55,731 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1642597886] [2022-11-20 11:45:55,731 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:45:55,731 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-20 11:45:55,731 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:45:55,732 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-20 11:45:55,732 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-11-20 11:45:55,733 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 112 out of 137 [2022-11-20 11:45:55,734 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 199 places, 200 transitions, 1337 flow. Second operand has 8 states, 8 states have (on average 114.125) internal successors, (913), 8 states have internal predecessors, (913), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:45:55,734 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:45:55,734 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 112 of 137 [2022-11-20 11:45:55,734 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:46:02,304 INFO L130 PetriNetUnfolder]: 16202/31650 cut-off events. [2022-11-20 11:46:02,304 INFO L131 PetriNetUnfolder]: For 241132/259361 co-relation queries the response was YES. [2022-11-20 11:46:02,594 INFO L83 FinitePrefix]: Finished finitePrefix Result has 151750 conditions, 31650 events. 16202/31650 cut-off events. For 241132/259361 co-relation queries the response was YES. Maximal size of possible extension queue 2489. Compared 334767 event pairs, 742 based on Foata normal form. 2647/32744 useless extension candidates. Maximal degree in co-relation 151648. Up to 6711 conditions per place. [2022-11-20 11:46:02,638 INFO L137 encePairwiseOnDemand]: 126/137 looper letters, 119 selfloop transitions, 52 changer transitions 122/406 dead transitions. [2022-11-20 11:46:02,639 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 214 places, 406 transitions, 4223 flow [2022-11-20 11:46:02,639 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-11-20 11:46:02,640 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2022-11-20 11:46:02,647 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 1931 transitions. [2022-11-20 11:46:02,648 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8809306569343066 [2022-11-20 11:46:02,649 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 1931 transitions. [2022-11-20 11:46:02,649 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 1931 transitions. [2022-11-20 11:46:02,650 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:46:02,650 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 1931 transitions. [2022-11-20 11:46:02,656 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 120.6875) internal successors, (1931), 16 states have internal predecessors, (1931), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:46:02,661 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 137.0) internal successors, (2329), 17 states have internal predecessors, (2329), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:46:02,663 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 137.0) internal successors, (2329), 17 states have internal predecessors, (2329), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:46:02,663 INFO L175 Difference]: Start difference. First operand has 199 places, 200 transitions, 1337 flow. Second operand 16 states and 1931 transitions. [2022-11-20 11:46:02,663 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 214 places, 406 transitions, 4223 flow [2022-11-20 11:46:07,099 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 213 places, 406 transitions, 4179 flow, removed 17 selfloop flow, removed 1 redundant places. [2022-11-20 11:46:07,103 INFO L231 Difference]: Finished difference. Result has 217 places, 203 transitions, 1471 flow [2022-11-20 11:46:07,103 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=137, PETRI_DIFFERENCE_MINUEND_FLOW=1293, PETRI_DIFFERENCE_MINUEND_PLACES=198, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=200, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=160, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=1471, PETRI_PLACES=217, PETRI_TRANSITIONS=203} [2022-11-20 11:46:07,103 INFO L288 CegarLoopForPetriNet]: 144 programPoint places, 73 predicate places. [2022-11-20 11:46:07,104 INFO L495 AbstractCegarLoop]: Abstraction has has 217 places, 203 transitions, 1471 flow [2022-11-20 11:46:07,104 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 114.125) internal successors, (913), 8 states have internal predecessors, (913), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:46:07,105 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:46:07,105 INFO L209 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:46:07,105 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-20 11:46:07,105 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-11-20 11:46:07,106 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:46:07,106 INFO L85 PathProgramCache]: Analyzing trace with hash 171537838, now seen corresponding path program 1 times [2022-11-20 11:46:07,106 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:46:07,106 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [223814631] [2022-11-20 11:46:07,106 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:46:07,107 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:46:07,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:46:07,484 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:46:07,484 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:46:07,484 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [223814631] [2022-11-20 11:46:07,488 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [223814631] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:46:07,488 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:46:07,488 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-11-20 11:46:07,488 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [817135029] [2022-11-20 11:46:07,489 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:46:07,490 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-20 11:46:07,491 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:46:07,492 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-20 11:46:07,492 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2022-11-20 11:46:07,493 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 112 out of 137 [2022-11-20 11:46:07,494 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 217 places, 203 transitions, 1471 flow. Second operand has 9 states, 9 states have (on average 114.0) internal successors, (1026), 9 states have internal predecessors, (1026), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:46:07,495 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:46:07,495 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 112 of 137 [2022-11-20 11:46:07,495 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:46:13,474 INFO L130 PetriNetUnfolder]: 14298/29199 cut-off events. [2022-11-20 11:46:13,474 INFO L131 PetriNetUnfolder]: For 262608/282474 co-relation queries the response was YES. [2022-11-20 11:46:13,872 INFO L83 FinitePrefix]: Finished finitePrefix Result has 150083 conditions, 29199 events. 14298/29199 cut-off events. For 262608/282474 co-relation queries the response was YES. Maximal size of possible extension queue 2452. Compared 323785 event pairs, 467 based on Foata normal form. 1685/29433 useless extension candidates. Maximal degree in co-relation 150029. Up to 5822 conditions per place. [2022-11-20 11:46:13,915 INFO L137 encePairwiseOnDemand]: 126/137 looper letters, 91 selfloop transitions, 57 changer transitions 99/358 dead transitions. [2022-11-20 11:46:13,915 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 229 places, 358 transitions, 3614 flow [2022-11-20 11:46:13,916 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-11-20 11:46:13,916 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2022-11-20 11:46:13,921 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 2254 transitions. [2022-11-20 11:46:13,923 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8659239339223972 [2022-11-20 11:46:13,923 INFO L72 ComplementDD]: Start complementDD. Operand 19 states and 2254 transitions. [2022-11-20 11:46:13,924 INFO L73 IsDeterministic]: Start isDeterministic. Operand 19 states and 2254 transitions. [2022-11-20 11:46:13,925 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:46:13,926 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 19 states and 2254 transitions. [2022-11-20 11:46:13,933 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 20 states, 19 states have (on average 118.63157894736842) internal successors, (2254), 19 states have internal predecessors, (2254), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:46:13,939 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 20 states, 20 states have (on average 137.0) internal successors, (2740), 20 states have internal predecessors, (2740), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:46:13,940 INFO L81 ComplementDD]: Finished complementDD. Result has 20 states, 20 states have (on average 137.0) internal successors, (2740), 20 states have internal predecessors, (2740), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:46:13,940 INFO L175 Difference]: Start difference. First operand has 217 places, 203 transitions, 1471 flow. Second operand 19 states and 2254 transitions. [2022-11-20 11:46:13,941 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 229 places, 358 transitions, 3614 flow [2022-11-20 11:46:44,971 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 206 places, 358 transitions, 2959 flow, removed 287 selfloop flow, removed 23 redundant places. [2022-11-20 11:46:44,977 INFO L231 Difference]: Finished difference. Result has 213 places, 196 transitions, 1177 flow [2022-11-20 11:46:44,978 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=137, PETRI_DIFFERENCE_MINUEND_FLOW=1068, PETRI_DIFFERENCE_MINUEND_PLACES=188, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=203, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=54, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=146, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=1177, PETRI_PLACES=213, PETRI_TRANSITIONS=196} [2022-11-20 11:46:44,979 INFO L288 CegarLoopForPetriNet]: 144 programPoint places, 69 predicate places. [2022-11-20 11:46:44,979 INFO L495 AbstractCegarLoop]: Abstraction has has 213 places, 196 transitions, 1177 flow [2022-11-20 11:46:44,980 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 114.0) internal successors, (1026), 9 states have internal predecessors, (1026), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:46:44,980 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:46:44,980 INFO L209 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:46:44,980 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-20 11:46:44,980 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-11-20 11:46:44,981 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:46:44,981 INFO L85 PathProgramCache]: Analyzing trace with hash -2092545884, now seen corresponding path program 1 times [2022-11-20 11:46:44,981 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:46:44,981 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [365586337] [2022-11-20 11:46:44,982 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:46:44,982 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:46:45,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:46:46,100 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:46:46,100 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:46:46,100 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [365586337] [2022-11-20 11:46:46,101 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [365586337] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:46:46,101 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:46:46,101 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-20 11:46:46,101 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [610241907] [2022-11-20 11:46:46,101 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:46:46,102 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-20 11:46:46,102 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:46:46,102 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-20 11:46:46,102 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-11-20 11:46:46,104 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 99 out of 137 [2022-11-20 11:46:46,105 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 213 places, 196 transitions, 1177 flow. Second operand has 8 states, 8 states have (on average 103.125) internal successors, (825), 8 states have internal predecessors, (825), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:46:46,105 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:46:46,105 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 99 of 137 [2022-11-20 11:46:46,105 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand