./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/pthread-wmm/safe003_power.oepc_pso.oepc_pso.opt_rmo.oepc_rmo.opt.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version dbf71c69 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51d990cd-4f9f-4859-9251-5d1d25828c27/bin/uautomizer-J5u9QxTXDZ/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51d990cd-4f9f-4859-9251-5d1d25828c27/bin/uautomizer-J5u9QxTXDZ/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51d990cd-4f9f-4859-9251-5d1d25828c27/bin/uautomizer-J5u9QxTXDZ/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51d990cd-4f9f-4859-9251-5d1d25828c27/bin/uautomizer-J5u9QxTXDZ/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread-wmm/safe003_power.oepc_pso.oepc_pso.opt_rmo.oepc_rmo.opt.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51d990cd-4f9f-4859-9251-5d1d25828c27/bin/uautomizer-J5u9QxTXDZ/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51d990cd-4f9f-4859-9251-5d1d25828c27/bin/uautomizer-J5u9QxTXDZ --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 5e0f2637c3745e36a3708f37a9783771b3e1c15cb350f0e936eafd42058bd9cf --- 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-dbf71c6-m [2022-10-17 10:23:33,502 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-10-17 10:23:33,505 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-10-17 10:23:33,539 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-10-17 10:23:33,540 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-10-17 10:23:33,541 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-10-17 10:23:33,543 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-10-17 10:23:33,546 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-10-17 10:23:33,548 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-10-17 10:23:33,550 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-10-17 10:23:33,551 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-10-17 10:23:33,553 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-10-17 10:23:33,554 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-10-17 10:23:33,555 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-10-17 10:23:33,557 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-10-17 10:23:33,559 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-10-17 10:23:33,560 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-10-17 10:23:33,562 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-10-17 10:23:33,564 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-10-17 10:23:33,567 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-10-17 10:23:33,569 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-10-17 10:23:33,571 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-10-17 10:23:33,573 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-10-17 10:23:33,574 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-10-17 10:23:33,580 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-10-17 10:23:33,581 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-10-17 10:23:33,581 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-10-17 10:23:33,582 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-10-17 10:23:33,583 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-10-17 10:23:33,584 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-10-17 10:23:33,585 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-10-17 10:23:33,586 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-10-17 10:23:33,587 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-10-17 10:23:33,588 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-10-17 10:23:33,590 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-10-17 10:23:33,590 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-10-17 10:23:33,591 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-10-17 10:23:33,592 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-10-17 10:23:33,592 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-10-17 10:23:33,594 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-10-17 10:23:33,594 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-10-17 10:23:33,595 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51d990cd-4f9f-4859-9251-5d1d25828c27/bin/uautomizer-J5u9QxTXDZ/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-10-17 10:23:33,623 INFO L113 SettingsManager]: Loading preferences was successful [2022-10-17 10:23:33,624 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-10-17 10:23:33,624 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-10-17 10:23:33,624 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-10-17 10:23:33,625 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-10-17 10:23:33,626 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-10-17 10:23:33,626 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-10-17 10:23:33,627 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-10-17 10:23:33,627 INFO L138 SettingsManager]: * Use SBE=true [2022-10-17 10:23:33,627 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-10-17 10:23:33,628 INFO L138 SettingsManager]: * sizeof long=4 [2022-10-17 10:23:33,628 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-10-17 10:23:33,628 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-10-17 10:23:33,628 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-10-17 10:23:33,629 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-10-17 10:23:33,629 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-10-17 10:23:33,629 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-10-17 10:23:33,630 INFO L138 SettingsManager]: * sizeof long double=12 [2022-10-17 10:23:33,630 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-10-17 10:23:33,630 INFO L138 SettingsManager]: * Use constant arrays=true [2022-10-17 10:23:33,630 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-10-17 10:23:33,631 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-10-17 10:23:33,631 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-10-17 10:23:33,631 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-10-17 10:23:33,631 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-17 10:23:33,632 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-10-17 10:23:33,632 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-10-17 10:23:33,632 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-10-17 10:23:33,640 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-10-17 10:23:33,641 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-10-17 10:23:33,641 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-10-17 10:23:33,641 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-10-17 10:23:33,642 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-10-17 10:23:33,642 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_51d990cd-4f9f-4859-9251-5d1d25828c27/bin/uautomizer-J5u9QxTXDZ/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51d990cd-4f9f-4859-9251-5d1d25828c27/bin/uautomizer-J5u9QxTXDZ Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 5e0f2637c3745e36a3708f37a9783771b3e1c15cb350f0e936eafd42058bd9cf [2022-10-17 10:23:34,009 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-10-17 10:23:34,056 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-10-17 10:23:34,060 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-10-17 10:23:34,062 INFO L271 PluginConnector]: Initializing CDTParser... [2022-10-17 10:23:34,063 INFO L275 PluginConnector]: CDTParser initialized [2022-10-17 10:23:34,064 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51d990cd-4f9f-4859-9251-5d1d25828c27/bin/uautomizer-J5u9QxTXDZ/../../sv-benchmarks/c/pthread-wmm/safe003_power.oepc_pso.oepc_pso.opt_rmo.oepc_rmo.opt.i [2022-10-17 10:23:34,163 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51d990cd-4f9f-4859-9251-5d1d25828c27/bin/uautomizer-J5u9QxTXDZ/data/aec911aa4/a6e782ca6b144a92940c56c522ba2fa3/FLAGd5258ce90 [2022-10-17 10:23:34,760 INFO L306 CDTParser]: Found 1 translation units. [2022-10-17 10:23:34,761 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51d990cd-4f9f-4859-9251-5d1d25828c27/sv-benchmarks/c/pthread-wmm/safe003_power.oepc_pso.oepc_pso.opt_rmo.oepc_rmo.opt.i [2022-10-17 10:23:34,799 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51d990cd-4f9f-4859-9251-5d1d25828c27/bin/uautomizer-J5u9QxTXDZ/data/aec911aa4/a6e782ca6b144a92940c56c522ba2fa3/FLAGd5258ce90 [2022-10-17 10:23:35,046 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51d990cd-4f9f-4859-9251-5d1d25828c27/bin/uautomizer-J5u9QxTXDZ/data/aec911aa4/a6e782ca6b144a92940c56c522ba2fa3 [2022-10-17 10:23:35,049 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-10-17 10:23:35,051 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-10-17 10:23:35,053 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-10-17 10:23:35,053 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-10-17 10:23:35,075 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-10-17 10:23:35,076 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.10 10:23:35" (1/1) ... [2022-10-17 10:23:35,077 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7061246d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:23:35, skipping insertion in model container [2022-10-17 10:23:35,077 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.10 10:23:35" (1/1) ... [2022-10-17 10:23:35,088 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-10-17 10:23:35,166 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-10-17 10:23:35,358 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51d990cd-4f9f-4859-9251-5d1d25828c27/sv-benchmarks/c/pthread-wmm/safe003_power.oepc_pso.oepc_pso.opt_rmo.oepc_rmo.opt.i[986,999] [2022-10-17 10:23:35,675 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-17 10:23:35,704 INFO L203 MainTranslator]: Completed pre-run [2022-10-17 10:23:35,721 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51d990cd-4f9f-4859-9251-5d1d25828c27/sv-benchmarks/c/pthread-wmm/safe003_power.oepc_pso.oepc_pso.opt_rmo.oepc_rmo.opt.i[986,999] [2022-10-17 10:23:35,818 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-17 10:23:35,880 INFO L208 MainTranslator]: Completed translation [2022-10-17 10:23:35,880 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:23:35 WrapperNode [2022-10-17 10:23:35,881 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-10-17 10:23:35,882 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-10-17 10:23:35,882 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-10-17 10:23:35,882 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-10-17 10:23:35,890 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:23:35" (1/1) ... [2022-10-17 10:23:35,932 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:23:35" (1/1) ... [2022-10-17 10:23:35,988 INFO L138 Inliner]: procedures = 176, calls = 54, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 275 [2022-10-17 10:23:35,990 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-10-17 10:23:35,991 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-10-17 10:23:35,991 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-10-17 10:23:35,991 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-10-17 10:23:36,001 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:23:35" (1/1) ... [2022-10-17 10:23:36,002 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:23:35" (1/1) ... [2022-10-17 10:23:36,018 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:23:35" (1/1) ... [2022-10-17 10:23:36,031 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:23:35" (1/1) ... [2022-10-17 10:23:36,048 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:23:35" (1/1) ... [2022-10-17 10:23:36,054 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:23:35" (1/1) ... [2022-10-17 10:23:36,071 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:23:35" (1/1) ... [2022-10-17 10:23:36,075 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:23:35" (1/1) ... [2022-10-17 10:23:36,085 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-10-17 10:23:36,087 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-10-17 10:23:36,087 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-10-17 10:23:36,088 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-10-17 10:23:36,089 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:23:35" (1/1) ... [2022-10-17 10:23:36,098 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-17 10:23:36,116 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51d990cd-4f9f-4859-9251-5d1d25828c27/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 10:23:36,143 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51d990cd-4f9f-4859-9251-5d1d25828c27/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-10-17 10:23:36,161 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51d990cd-4f9f-4859-9251-5d1d25828c27/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-10-17 10:23:36,203 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-10-17 10:23:36,204 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-10-17 10:23:36,204 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-10-17 10:23:36,204 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-10-17 10:23:36,204 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-10-17 10:23:36,205 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2022-10-17 10:23:36,205 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2022-10-17 10:23:36,205 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2022-10-17 10:23:36,207 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2022-10-17 10:23:36,207 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2022-10-17 10:23:36,207 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2022-10-17 10:23:36,207 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-10-17 10:23:36,208 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-10-17 10:23:36,208 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-10-17 10:23:36,208 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-10-17 10:23:36,211 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-10-17 10:23:36,497 INFO L235 CfgBuilder]: Building ICFG [2022-10-17 10:23:36,499 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-10-17 10:23:37,632 INFO L276 CfgBuilder]: Performing block encoding [2022-10-17 10:23:38,544 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-10-17 10:23:38,545 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-10-17 10:23:38,548 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.10 10:23:38 BoogieIcfgContainer [2022-10-17 10:23:38,548 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-10-17 10:23:38,551 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-10-17 10:23:38,552 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-10-17 10:23:38,555 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-10-17 10:23:38,555 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.10 10:23:35" (1/3) ... [2022-10-17 10:23:38,556 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@25bc4a82 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.10 10:23:38, skipping insertion in model container [2022-10-17 10:23:38,556 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:23:35" (2/3) ... [2022-10-17 10:23:38,557 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@25bc4a82 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.10 10:23:38, skipping insertion in model container [2022-10-17 10:23:38,557 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.10 10:23:38" (3/3) ... [2022-10-17 10:23:38,562 INFO L112 eAbstractionObserver]: Analyzing ICFG safe003_power.oepc_pso.oepc_pso.opt_rmo.oepc_rmo.opt.i [2022-10-17 10:23:38,572 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-10-17 10:23:38,583 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-10-17 10:23:38,583 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-10-17 10:23:38,584 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-10-17 10:23:38,739 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-10-17 10:23:38,818 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 123 places, 115 transitions, 245 flow [2022-10-17 10:23:38,909 INFO L130 PetriNetUnfolder]: 2/112 cut-off events. [2022-10-17 10:23:38,909 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-10-17 10:23:38,915 INFO L83 FinitePrefix]: Finished finitePrefix Result has 122 conditions, 112 events. 2/112 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 55 event pairs, 0 based on Foata normal form. 0/108 useless extension candidates. Maximal degree in co-relation 73. Up to 2 conditions per place. [2022-10-17 10:23:38,916 INFO L82 GeneralOperation]: Start removeDead. Operand has 123 places, 115 transitions, 245 flow [2022-10-17 10:23:38,921 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 120 places, 112 transitions, 233 flow [2022-10-17 10:23:38,939 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-10-17 10:23:38,949 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;@a42690a, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-10-17 10:23:38,950 INFO L358 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2022-10-17 10:23:38,967 INFO L130 PetriNetUnfolder]: 0/46 cut-off events. [2022-10-17 10:23:38,968 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-10-17 10:23:38,968 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-10-17 10:23:38,969 INFO L208 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] [2022-10-17 10:23:38,970 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting P0Err0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2022-10-17 10:23:38,976 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:23:38,977 INFO L85 PathProgramCache]: Analyzing trace with hash 1496034097, now seen corresponding path program 1 times [2022-10-17 10:23:38,987 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:23:38,989 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1141414622] [2022-10-17 10:23:38,989 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:23:38,990 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:23:39,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:23:39,732 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 10:23:39,733 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:23:39,733 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1141414622] [2022-10-17 10:23:39,734 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1141414622] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:23:39,734 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:23:39,735 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-10-17 10:23:39,737 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1677239322] [2022-10-17 10:23:39,738 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:23:39,749 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-10-17 10:23:39,749 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:23:39,798 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-10-17 10:23:39,809 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-17 10:23:39,816 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 99 out of 115 [2022-10-17 10:23:39,822 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 120 places, 112 transitions, 233 flow. Second operand has 3 states, 3 states have (on average 100.0) internal successors, (300), 3 states have internal predecessors, (300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:23:39,823 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-10-17 10:23:39,824 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 99 of 115 [2022-10-17 10:23:39,825 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-10-17 10:23:40,242 INFO L130 PetriNetUnfolder]: 124/550 cut-off events. [2022-10-17 10:23:40,242 INFO L131 PetriNetUnfolder]: For 10/10 co-relation queries the response was YES. [2022-10-17 10:23:40,246 INFO L83 FinitePrefix]: Finished finitePrefix Result has 781 conditions, 550 events. 124/550 cut-off events. For 10/10 co-relation queries the response was YES. Maximal size of possible extension queue 36. Compared 2975 event pairs, 24 based on Foata normal form. 23/542 useless extension candidates. Maximal degree in co-relation 729. Up to 155 conditions per place. [2022-10-17 10:23:40,251 INFO L137 encePairwiseOnDemand]: 110/115 looper letters, 18 selfloop transitions, 2 changer transitions 0/116 dead transitions. [2022-10-17 10:23:40,252 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 120 places, 116 transitions, 287 flow [2022-10-17 10:23:40,253 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-10-17 10:23:40,256 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-10-17 10:23:40,266 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 322 transitions. [2022-10-17 10:23:40,269 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.9333333333333333 [2022-10-17 10:23:40,270 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 322 transitions. [2022-10-17 10:23:40,270 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 322 transitions. [2022-10-17 10:23:40,272 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-10-17 10:23:40,275 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 322 transitions. [2022-10-17 10:23:40,280 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 107.33333333333333) internal successors, (322), 3 states have internal predecessors, (322), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:23:40,287 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 115.0) internal successors, (460), 4 states have internal predecessors, (460), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:23:40,288 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 115.0) internal successors, (460), 4 states have internal predecessors, (460), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:23:40,290 INFO L175 Difference]: Start difference. First operand has 120 places, 112 transitions, 233 flow. Second operand 3 states and 322 transitions. [2022-10-17 10:23:40,291 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 120 places, 116 transitions, 287 flow [2022-10-17 10:23:40,295 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 117 places, 116 transitions, 282 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-10-17 10:23:40,299 INFO L231 Difference]: Finished difference. Result has 117 places, 108 transitions, 226 flow [2022-10-17 10:23:40,301 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=115, PETRI_DIFFERENCE_MINUEND_FLOW=222, PETRI_DIFFERENCE_MINUEND_PLACES=115, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=108, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=106, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=226, PETRI_PLACES=117, PETRI_TRANSITIONS=108} [2022-10-17 10:23:40,305 INFO L287 CegarLoopForPetriNet]: 120 programPoint places, -3 predicate places. [2022-10-17 10:23:40,305 INFO L495 AbstractCegarLoop]: Abstraction has has 117 places, 108 transitions, 226 flow [2022-10-17 10:23:40,306 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 100.0) internal successors, (300), 3 states have internal predecessors, (300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:23:40,306 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-10-17 10:23:40,306 INFO L208 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] [2022-10-17 10:23:40,307 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-10-17 10:23:40,307 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2022-10-17 10:23:40,308 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:23:40,308 INFO L85 PathProgramCache]: Analyzing trace with hash -1542640867, now seen corresponding path program 1 times [2022-10-17 10:23:40,308 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:23:40,308 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [682610294] [2022-10-17 10:23:40,309 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:23:40,309 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:23:40,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:23:40,976 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 10:23:40,976 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:23:40,978 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [682610294] [2022-10-17 10:23:40,978 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [682610294] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:23:40,979 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:23:40,980 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-10-17 10:23:40,983 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [611458680] [2022-10-17 10:23:40,983 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:23:40,986 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-10-17 10:23:40,986 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:23:40,987 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-10-17 10:23:40,988 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-10-17 10:23:40,990 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 93 out of 115 [2022-10-17 10:23:40,991 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 117 places, 108 transitions, 226 flow. Second operand has 6 states, 6 states have (on average 94.83333333333333) internal successors, (569), 6 states have internal predecessors, (569), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:23:40,991 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-10-17 10:23:41,003 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 93 of 115 [2022-10-17 10:23:41,004 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-10-17 10:23:42,004 INFO L130 PetriNetUnfolder]: 488/1441 cut-off events. [2022-10-17 10:23:42,004 INFO L131 PetriNetUnfolder]: For 95/95 co-relation queries the response was YES. [2022-10-17 10:23:42,009 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2335 conditions, 1441 events. 488/1441 cut-off events. For 95/95 co-relation queries the response was YES. Maximal size of possible extension queue 104. Compared 10228 event pairs, 102 based on Foata normal form. 0/1397 useless extension candidates. Maximal degree in co-relation 2283. Up to 403 conditions per place. [2022-10-17 10:23:42,019 INFO L137 encePairwiseOnDemand]: 109/115 looper letters, 19 selfloop transitions, 2 changer transitions 48/148 dead transitions. [2022-10-17 10:23:42,019 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 125 places, 148 transitions, 436 flow [2022-10-17 10:23:42,020 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-10-17 10:23:42,020 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-10-17 10:23:42,027 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 897 transitions. [2022-10-17 10:23:42,029 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8666666666666667 [2022-10-17 10:23:42,030 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 897 transitions. [2022-10-17 10:23:42,030 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 897 transitions. [2022-10-17 10:23:42,031 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-10-17 10:23:42,031 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 897 transitions. [2022-10-17 10:23:42,036 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 99.66666666666667) internal successors, (897), 9 states have internal predecessors, (897), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:23:42,044 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 115.0) internal successors, (1150), 10 states have internal predecessors, (1150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:23:42,045 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 115.0) internal successors, (1150), 10 states have internal predecessors, (1150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:23:42,045 INFO L175 Difference]: Start difference. First operand has 117 places, 108 transitions, 226 flow. Second operand 9 states and 897 transitions. [2022-10-17 10:23:42,045 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 125 places, 148 transitions, 436 flow [2022-10-17 10:23:42,049 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 123 places, 148 transitions, 418 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-10-17 10:23:42,053 INFO L231 Difference]: Finished difference. Result has 130 places, 96 transitions, 218 flow [2022-10-17 10:23:42,054 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=115, PETRI_DIFFERENCE_MINUEND_FLOW=222, PETRI_DIFFERENCE_MINUEND_PLACES=115, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=108, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=106, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=218, PETRI_PLACES=130, PETRI_TRANSITIONS=96} [2022-10-17 10:23:42,055 INFO L287 CegarLoopForPetriNet]: 120 programPoint places, 10 predicate places. [2022-10-17 10:23:42,056 INFO L495 AbstractCegarLoop]: Abstraction has has 130 places, 96 transitions, 218 flow [2022-10-17 10:23:42,056 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 94.83333333333333) internal successors, (569), 6 states have internal predecessors, (569), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:23:42,057 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-10-17 10:23:42,057 INFO L208 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] [2022-10-17 10:23:42,057 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-10-17 10:23:42,057 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2022-10-17 10:23:42,058 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:23:42,058 INFO L85 PathProgramCache]: Analyzing trace with hash -1032371874, now seen corresponding path program 1 times [2022-10-17 10:23:42,058 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:23:42,058 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1132668510] [2022-10-17 10:23:42,059 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:23:42,059 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:23:42,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:23:42,999 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 10:23:43,000 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:23:43,001 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1132668510] [2022-10-17 10:23:43,001 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1132668510] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:23:43,002 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:23:43,002 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-10-17 10:23:43,002 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [377943545] [2022-10-17 10:23:43,003 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:23:43,004 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-10-17 10:23:43,004 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:23:43,004 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-10-17 10:23:43,005 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2022-10-17 10:23:43,008 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 115 [2022-10-17 10:23:43,009 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 130 places, 96 transitions, 218 flow. Second operand has 9 states, 9 states have (on average 90.66666666666667) internal successors, (816), 9 states have internal predecessors, (816), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:23:43,009 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-10-17 10:23:43,009 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 115 [2022-10-17 10:23:43,010 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-10-17 10:23:44,207 INFO L130 PetriNetUnfolder]: 687/1422 cut-off events. [2022-10-17 10:23:44,207 INFO L131 PetriNetUnfolder]: For 334/334 co-relation queries the response was YES. [2022-10-17 10:23:44,214 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2885 conditions, 1422 events. 687/1422 cut-off events. For 334/334 co-relation queries the response was YES. Maximal size of possible extension queue 94. Compared 8220 event pairs, 105 based on Foata normal form. 30/1396 useless extension candidates. Maximal degree in co-relation 2823. Up to 484 conditions per place. [2022-10-17 10:23:44,222 INFO L137 encePairwiseOnDemand]: 100/115 looper letters, 26 selfloop transitions, 11 changer transitions 61/173 dead transitions. [2022-10-17 10:23:44,222 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 126 places, 173 transitions, 612 flow [2022-10-17 10:23:44,224 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-10-17 10:23:44,224 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2022-10-17 10:23:44,228 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 1436 transitions. [2022-10-17 10:23:44,230 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.832463768115942 [2022-10-17 10:23:44,230 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 1436 transitions. [2022-10-17 10:23:44,230 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 1436 transitions. [2022-10-17 10:23:44,232 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-10-17 10:23:44,232 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 1436 transitions. [2022-10-17 10:23:44,238 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 95.73333333333333) internal successors, (1436), 15 states have internal predecessors, (1436), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:23:44,245 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 115.0) internal successors, (1840), 16 states have internal predecessors, (1840), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:23:44,247 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 115.0) internal successors, (1840), 16 states have internal predecessors, (1840), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:23:44,248 INFO L175 Difference]: Start difference. First operand has 130 places, 96 transitions, 218 flow. Second operand 15 states and 1436 transitions. [2022-10-17 10:23:44,248 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 126 places, 173 transitions, 612 flow [2022-10-17 10:23:44,268 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 118 places, 173 transitions, 568 flow, removed 18 selfloop flow, removed 8 redundant places. [2022-10-17 10:23:44,274 INFO L231 Difference]: Finished difference. Result has 130 places, 102 transitions, 328 flow [2022-10-17 10:23:44,274 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=115, PETRI_DIFFERENCE_MINUEND_FLOW=202, PETRI_DIFFERENCE_MINUEND_PLACES=104, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=96, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=87, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=328, PETRI_PLACES=130, PETRI_TRANSITIONS=102} [2022-10-17 10:23:44,278 INFO L287 CegarLoopForPetriNet]: 120 programPoint places, 10 predicate places. [2022-10-17 10:23:44,278 INFO L495 AbstractCegarLoop]: Abstraction has has 130 places, 102 transitions, 328 flow [2022-10-17 10:23:44,279 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 90.66666666666667) internal successors, (816), 9 states have internal predecessors, (816), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:23:44,279 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-10-17 10:23:44,280 INFO L208 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] [2022-10-17 10:23:44,280 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-10-17 10:23:44,280 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2022-10-17 10:23:44,281 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:23:44,281 INFO L85 PathProgramCache]: Analyzing trace with hash -1036763332, now seen corresponding path program 1 times [2022-10-17 10:23:44,281 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:23:44,282 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [848686720] [2022-10-17 10:23:44,282 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:23:44,282 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:23:44,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:23:44,799 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 10:23:44,799 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:23:44,800 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [848686720] [2022-10-17 10:23:44,800 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [848686720] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:23:44,800 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:23:44,800 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-10-17 10:23:44,801 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [532937167] [2022-10-17 10:23:44,801 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:23:44,803 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-10-17 10:23:44,807 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:23:44,808 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-10-17 10:23:44,808 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-10-17 10:23:44,809 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 92 out of 115 [2022-10-17 10:23:44,810 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 130 places, 102 transitions, 328 flow. Second operand has 6 states, 6 states have (on average 94.16666666666667) internal successors, (565), 6 states have internal predecessors, (565), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:23:44,811 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-10-17 10:23:44,811 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 92 of 115 [2022-10-17 10:23:44,811 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-10-17 10:23:45,656 INFO L130 PetriNetUnfolder]: 542/1153 cut-off events. [2022-10-17 10:23:45,656 INFO L131 PetriNetUnfolder]: For 4277/4583 co-relation queries the response was YES. [2022-10-17 10:23:45,663 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4512 conditions, 1153 events. 542/1153 cut-off events. For 4277/4583 co-relation queries the response was YES. Maximal size of possible extension queue 69. Compared 6155 event pairs, 214 based on Foata normal form. 25/1122 useless extension candidates. Maximal degree in co-relation 4442. Up to 519 conditions per place. [2022-10-17 10:23:45,674 INFO L137 encePairwiseOnDemand]: 109/115 looper letters, 30 selfloop transitions, 2 changer transitions 31/143 dead transitions. [2022-10-17 10:23:45,674 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 129 places, 143 transitions, 760 flow [2022-10-17 10:23:45,675 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-10-17 10:23:45,675 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-10-17 10:23:45,678 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 886 transitions. [2022-10-17 10:23:45,679 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8560386473429952 [2022-10-17 10:23:45,679 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 886 transitions. [2022-10-17 10:23:45,679 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 886 transitions. [2022-10-17 10:23:45,681 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-10-17 10:23:45,685 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 886 transitions. [2022-10-17 10:23:45,688 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 98.44444444444444) internal successors, (886), 9 states have internal predecessors, (886), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:23:45,691 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 115.0) internal successors, (1150), 10 states have internal predecessors, (1150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:23:45,694 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 115.0) internal successors, (1150), 10 states have internal predecessors, (1150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:23:45,694 INFO L175 Difference]: Start difference. First operand has 130 places, 102 transitions, 328 flow. Second operand 9 states and 886 transitions. [2022-10-17 10:23:45,694 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 129 places, 143 transitions, 760 flow [2022-10-17 10:23:45,705 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 123 places, 143 transitions, 725 flow, removed 9 selfloop flow, removed 6 redundant places. [2022-10-17 10:23:45,711 INFO L231 Difference]: Finished difference. Result has 130 places, 102 transitions, 328 flow [2022-10-17 10:23:45,711 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=115, PETRI_DIFFERENCE_MINUEND_FLOW=308, PETRI_DIFFERENCE_MINUEND_PLACES=115, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=102, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=100, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=328, PETRI_PLACES=130, PETRI_TRANSITIONS=102} [2022-10-17 10:23:45,713 INFO L287 CegarLoopForPetriNet]: 120 programPoint places, 10 predicate places. [2022-10-17 10:23:45,714 INFO L495 AbstractCegarLoop]: Abstraction has has 130 places, 102 transitions, 328 flow [2022-10-17 10:23:45,714 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 94.16666666666667) internal successors, (565), 6 states have internal predecessors, (565), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:23:45,714 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-10-17 10:23:45,715 INFO L208 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] [2022-10-17 10:23:45,715 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-10-17 10:23:45,715 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2022-10-17 10:23:45,715 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:23:45,716 INFO L85 PathProgramCache]: Analyzing trace with hash 528704832, now seen corresponding path program 1 times [2022-10-17 10:23:45,716 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:23:45,717 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1643605606] [2022-10-17 10:23:45,717 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:23:45,717 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:23:45,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:23:46,186 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 10:23:46,187 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:23:46,187 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1643605606] [2022-10-17 10:23:46,187 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1643605606] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:23:46,187 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:23:46,188 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-10-17 10:23:46,188 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [757807416] [2022-10-17 10:23:46,188 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:23:46,188 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-10-17 10:23:46,189 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:23:46,189 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-10-17 10:23:46,189 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-10-17 10:23:46,191 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 90 out of 115 [2022-10-17 10:23:46,192 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 130 places, 102 transitions, 328 flow. Second operand has 7 states, 7 states have (on average 92.0) internal successors, (644), 7 states have internal predecessors, (644), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:23:46,192 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-10-17 10:23:46,192 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 90 of 115 [2022-10-17 10:23:46,192 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-10-17 10:23:47,188 INFO L130 PetriNetUnfolder]: 719/1489 cut-off events. [2022-10-17 10:23:47,188 INFO L131 PetriNetUnfolder]: For 6052/7086 co-relation queries the response was YES. [2022-10-17 10:23:47,222 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5894 conditions, 1489 events. 719/1489 cut-off events. For 6052/7086 co-relation queries the response was YES. Maximal size of possible extension queue 78. Compared 8122 event pairs, 174 based on Foata normal form. 35/1428 useless extension candidates. Maximal degree in co-relation 5821. Up to 620 conditions per place. [2022-10-17 10:23:47,232 INFO L137 encePairwiseOnDemand]: 107/115 looper letters, 36 selfloop transitions, 4 changer transitions 40/157 dead transitions. [2022-10-17 10:23:47,232 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 133 places, 157 transitions, 860 flow [2022-10-17 10:23:47,233 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-10-17 10:23:47,233 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-10-17 10:23:47,236 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 972 transitions. [2022-10-17 10:23:47,237 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8452173913043478 [2022-10-17 10:23:47,237 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 972 transitions. [2022-10-17 10:23:47,237 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 972 transitions. [2022-10-17 10:23:47,238 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-10-17 10:23:47,238 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 972 transitions. [2022-10-17 10:23:47,242 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 97.2) internal successors, (972), 10 states have internal predecessors, (972), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:23:47,245 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 115.0) internal successors, (1265), 11 states have internal predecessors, (1265), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:23:47,246 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 115.0) internal successors, (1265), 11 states have internal predecessors, (1265), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:23:47,246 INFO L175 Difference]: Start difference. First operand has 130 places, 102 transitions, 328 flow. Second operand 10 states and 972 transitions. [2022-10-17 10:23:47,246 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 133 places, 157 transitions, 860 flow [2022-10-17 10:23:47,262 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 125 places, 157 transitions, 818 flow, removed 18 selfloop flow, removed 8 redundant places. [2022-10-17 10:23:47,265 INFO L231 Difference]: Finished difference. Result has 133 places, 100 transitions, 327 flow [2022-10-17 10:23:47,265 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=115, PETRI_DIFFERENCE_MINUEND_FLOW=310, PETRI_DIFFERENCE_MINUEND_PLACES=116, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=102, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=98, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=327, PETRI_PLACES=133, PETRI_TRANSITIONS=100} [2022-10-17 10:23:47,268 INFO L287 CegarLoopForPetriNet]: 120 programPoint places, 13 predicate places. [2022-10-17 10:23:47,268 INFO L495 AbstractCegarLoop]: Abstraction has has 133 places, 100 transitions, 327 flow [2022-10-17 10:23:47,268 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 92.0) internal successors, (644), 7 states have internal predecessors, (644), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:23:47,269 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-10-17 10:23:47,269 INFO L208 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] [2022-10-17 10:23:47,269 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-10-17 10:23:47,269 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2022-10-17 10:23:47,270 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:23:47,270 INFO L85 PathProgramCache]: Analyzing trace with hash 881608299, now seen corresponding path program 1 times [2022-10-17 10:23:47,271 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:23:47,271 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [826294435] [2022-10-17 10:23:47,271 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:23:47,271 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:23:47,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:23:47,730 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 10:23:47,731 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:23:47,731 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [826294435] [2022-10-17 10:23:47,731 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [826294435] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:23:47,731 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:23:47,732 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-10-17 10:23:47,732 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1380207201] [2022-10-17 10:23:47,732 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:23:47,733 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-10-17 10:23:47,733 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:23:47,734 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-10-17 10:23:47,735 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-10-17 10:23:47,736 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 93 out of 115 [2022-10-17 10:23:47,737 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 133 places, 100 transitions, 327 flow. Second operand has 6 states, 6 states have (on average 95.16666666666667) internal successors, (571), 6 states have internal predecessors, (571), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:23:47,737 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-10-17 10:23:47,737 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 93 of 115 [2022-10-17 10:23:47,737 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-10-17 10:23:48,290 INFO L130 PetriNetUnfolder]: 293/685 cut-off events. [2022-10-17 10:23:48,290 INFO L131 PetriNetUnfolder]: For 3025/3221 co-relation queries the response was YES. [2022-10-17 10:23:48,294 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2820 conditions, 685 events. 293/685 cut-off events. For 3025/3221 co-relation queries the response was YES. Maximal size of possible extension queue 42. Compared 3064 event pairs, 96 based on Foata normal form. 19/677 useless extension candidates. Maximal degree in co-relation 2744. Up to 300 conditions per place. [2022-10-17 10:23:48,299 INFO L137 encePairwiseOnDemand]: 109/115 looper letters, 21 selfloop transitions, 2 changer transitions 25/128 dead transitions. [2022-10-17 10:23:48,299 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 135 places, 128 transitions, 629 flow [2022-10-17 10:23:48,300 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-10-17 10:23:48,300 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-10-17 10:23:48,302 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 884 transitions. [2022-10-17 10:23:48,303 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8541062801932368 [2022-10-17 10:23:48,304 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 884 transitions. [2022-10-17 10:23:48,304 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 884 transitions. [2022-10-17 10:23:48,305 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-10-17 10:23:48,305 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 884 transitions. [2022-10-17 10:23:48,307 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 98.22222222222223) internal successors, (884), 9 states have internal predecessors, (884), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:23:48,312 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 115.0) internal successors, (1150), 10 states have internal predecessors, (1150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:23:48,313 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 115.0) internal successors, (1150), 10 states have internal predecessors, (1150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:23:48,313 INFO L175 Difference]: Start difference. First operand has 133 places, 100 transitions, 327 flow. Second operand 9 states and 884 transitions. [2022-10-17 10:23:48,313 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 135 places, 128 transitions, 629 flow [2022-10-17 10:23:48,319 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 121 places, 128 transitions, 561 flow, removed 28 selfloop flow, removed 14 redundant places. [2022-10-17 10:23:48,321 INFO L231 Difference]: Finished difference. Result has 128 places, 100 transitions, 307 flow [2022-10-17 10:23:48,322 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=115, PETRI_DIFFERENCE_MINUEND_FLOW=287, PETRI_DIFFERENCE_MINUEND_PLACES=113, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=100, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=98, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=307, PETRI_PLACES=128, PETRI_TRANSITIONS=100} [2022-10-17 10:23:48,325 INFO L287 CegarLoopForPetriNet]: 120 programPoint places, 8 predicate places. [2022-10-17 10:23:48,325 INFO L495 AbstractCegarLoop]: Abstraction has has 128 places, 100 transitions, 307 flow [2022-10-17 10:23:48,325 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 95.16666666666667) internal successors, (571), 6 states have internal predecessors, (571), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:23:48,326 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-10-17 10:23:48,326 INFO L208 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] [2022-10-17 10:23:48,326 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-10-17 10:23:48,326 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2022-10-17 10:23:48,327 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:23:48,327 INFO L85 PathProgramCache]: Analyzing trace with hash -1694920703, now seen corresponding path program 1 times [2022-10-17 10:23:48,327 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:23:48,327 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [414964976] [2022-10-17 10:23:48,327 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:23:48,327 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:23:48,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:23:49,288 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 10:23:49,288 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:23:49,288 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [414964976] [2022-10-17 10:23:49,289 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [414964976] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:23:49,289 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:23:49,289 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-10-17 10:23:49,294 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [591015959] [2022-10-17 10:23:49,294 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:23:49,295 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-10-17 10:23:49,295 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:23:49,295 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-10-17 10:23:49,296 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2022-10-17 10:23:49,297 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 88 out of 115 [2022-10-17 10:23:49,299 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 128 places, 100 transitions, 307 flow. Second operand has 10 states, 10 states have (on average 89.8) internal successors, (898), 10 states have internal predecessors, (898), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:23:49,299 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-10-17 10:23:49,299 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 88 of 115 [2022-10-17 10:23:49,299 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-10-17 10:23:49,987 INFO L130 PetriNetUnfolder]: 309/768 cut-off events. [2022-10-17 10:23:49,987 INFO L131 PetriNetUnfolder]: For 2285/3177 co-relation queries the response was YES. [2022-10-17 10:23:49,992 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2888 conditions, 768 events. 309/768 cut-off events. For 2285/3177 co-relation queries the response was YES. Maximal size of possible extension queue 50. Compared 3704 event pairs, 49 based on Foata normal form. 16/745 useless extension candidates. Maximal degree in co-relation 2814. Up to 340 conditions per place. [2022-10-17 10:23:49,998 INFO L137 encePairwiseOnDemand]: 101/115 looper letters, 24 selfloop transitions, 10 changer transitions 25/133 dead transitions. [2022-10-17 10:23:49,999 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 132 places, 133 transitions, 689 flow [2022-10-17 10:23:49,999 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-10-17 10:23:50,000 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2022-10-17 10:23:50,003 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 1025 transitions. [2022-10-17 10:23:50,004 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8102766798418972 [2022-10-17 10:23:50,004 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 1025 transitions. [2022-10-17 10:23:50,004 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 1025 transitions. [2022-10-17 10:23:50,005 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-10-17 10:23:50,006 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 1025 transitions. [2022-10-17 10:23:50,009 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 93.18181818181819) internal successors, (1025), 11 states have internal predecessors, (1025), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:23:50,013 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 115.0) internal successors, (1380), 12 states have internal predecessors, (1380), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:23:50,014 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 115.0) internal successors, (1380), 12 states have internal predecessors, (1380), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:23:50,014 INFO L175 Difference]: Start difference. First operand has 128 places, 100 transitions, 307 flow. Second operand 11 states and 1025 transitions. [2022-10-17 10:23:50,014 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 132 places, 133 transitions, 689 flow [2022-10-17 10:23:50,019 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 124 places, 133 transitions, 661 flow, removed 10 selfloop flow, removed 8 redundant places. [2022-10-17 10:23:50,022 INFO L231 Difference]: Finished difference. Result has 129 places, 99 transitions, 332 flow [2022-10-17 10:23:50,023 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=115, PETRI_DIFFERENCE_MINUEND_FLOW=291, PETRI_DIFFERENCE_MINUEND_PLACES=114, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=100, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=90, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=332, PETRI_PLACES=129, PETRI_TRANSITIONS=99} [2022-10-17 10:23:50,023 INFO L287 CegarLoopForPetriNet]: 120 programPoint places, 9 predicate places. [2022-10-17 10:23:50,023 INFO L495 AbstractCegarLoop]: Abstraction has has 129 places, 99 transitions, 332 flow [2022-10-17 10:23:50,024 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 89.8) internal successors, (898), 10 states have internal predecessors, (898), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:23:50,024 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-10-17 10:23:50,025 INFO L208 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] [2022-10-17 10:23:50,025 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-10-17 10:23:50,025 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2022-10-17 10:23:50,026 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:23:50,026 INFO L85 PathProgramCache]: Analyzing trace with hash 1050187925, now seen corresponding path program 2 times [2022-10-17 10:23:50,027 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:23:50,027 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1717464635] [2022-10-17 10:23:50,027 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:23:50,027 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:23:50,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:23:51,217 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 10:23:51,217 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:23:51,221 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1717464635] [2022-10-17 10:23:51,221 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1717464635] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:23:51,222 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:23:51,222 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-10-17 10:23:51,222 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1510510769] [2022-10-17 10:23:51,222 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:23:51,223 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-10-17 10:23:51,223 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:23:51,223 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-10-17 10:23:51,223 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2022-10-17 10:23:51,225 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 86 out of 115 [2022-10-17 10:23:51,227 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 129 places, 99 transitions, 332 flow. Second operand has 12 states, 12 states have (on average 87.66666666666667) internal successors, (1052), 12 states have internal predecessors, (1052), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:23:51,227 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-10-17 10:23:51,227 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 86 of 115 [2022-10-17 10:23:51,227 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-10-17 10:23:51,902 INFO L130 PetriNetUnfolder]: 237/601 cut-off events. [2022-10-17 10:23:51,903 INFO L131 PetriNetUnfolder]: For 2199/2344 co-relation queries the response was YES. [2022-10-17 10:23:51,906 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2405 conditions, 601 events. 237/601 cut-off events. For 2199/2344 co-relation queries the response was YES. Maximal size of possible extension queue 32. Compared 2673 event pairs, 54 based on Foata normal form. 20/609 useless extension candidates. Maximal degree in co-relation 2325. Up to 248 conditions per place. [2022-10-17 10:23:51,911 INFO L137 encePairwiseOnDemand]: 101/115 looper letters, 29 selfloop transitions, 12 changer transitions 19/132 dead transitions. [2022-10-17 10:23:51,911 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 136 places, 132 transitions, 732 flow [2022-10-17 10:23:51,911 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-10-17 10:23:51,912 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2022-10-17 10:23:51,914 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 1003 transitions. [2022-10-17 10:23:51,916 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.7928853754940711 [2022-10-17 10:23:51,916 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 1003 transitions. [2022-10-17 10:23:51,916 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 1003 transitions. [2022-10-17 10:23:51,917 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-10-17 10:23:51,917 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 1003 transitions. [2022-10-17 10:23:51,920 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 91.18181818181819) internal successors, (1003), 11 states have internal predecessors, (1003), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:23:51,924 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 115.0) internal successors, (1380), 12 states have internal predecessors, (1380), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:23:51,925 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 115.0) internal successors, (1380), 12 states have internal predecessors, (1380), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:23:51,925 INFO L175 Difference]: Start difference. First operand has 129 places, 99 transitions, 332 flow. Second operand 11 states and 1003 transitions. [2022-10-17 10:23:51,925 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 136 places, 132 transitions, 732 flow [2022-10-17 10:23:51,930 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 124 places, 132 transitions, 638 flow, removed 24 selfloop flow, removed 12 redundant places. [2022-10-17 10:23:51,933 INFO L231 Difference]: Finished difference. Result has 130 places, 105 transitions, 385 flow [2022-10-17 10:23:51,933 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=115, PETRI_DIFFERENCE_MINUEND_FLOW=284, PETRI_DIFFERENCE_MINUEND_PLACES=114, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=99, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=87, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=385, PETRI_PLACES=130, PETRI_TRANSITIONS=105} [2022-10-17 10:23:51,936 INFO L287 CegarLoopForPetriNet]: 120 programPoint places, 10 predicate places. [2022-10-17 10:23:51,936 INFO L495 AbstractCegarLoop]: Abstraction has has 130 places, 105 transitions, 385 flow [2022-10-17 10:23:51,937 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 87.66666666666667) internal successors, (1052), 12 states have internal predecessors, (1052), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:23:51,937 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-10-17 10:23:51,938 INFO L208 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] [2022-10-17 10:23:51,938 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-10-17 10:23:51,938 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2022-10-17 10:23:51,938 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:23:51,939 INFO L85 PathProgramCache]: Analyzing trace with hash 972141200, now seen corresponding path program 1 times [2022-10-17 10:23:51,939 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:23:51,939 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1163468250] [2022-10-17 10:23:51,939 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:23:51,939 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:23:52,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:23:52,753 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 10:23:52,753 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:23:52,753 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1163468250] [2022-10-17 10:23:52,754 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1163468250] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:23:52,754 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:23:52,754 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-10-17 10:23:52,754 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1991177190] [2022-10-17 10:23:52,754 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:23:52,755 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-10-17 10:23:52,755 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:23:52,755 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-10-17 10:23:52,755 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-10-17 10:23:52,756 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 88 out of 115 [2022-10-17 10:23:52,757 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 130 places, 105 transitions, 385 flow. Second operand has 8 states, 8 states have (on average 90.375) internal successors, (723), 8 states have internal predecessors, (723), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:23:52,758 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-10-17 10:23:52,758 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 88 of 115 [2022-10-17 10:23:52,758 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-10-17 10:23:53,429 INFO L130 PetriNetUnfolder]: 210/602 cut-off events. [2022-10-17 10:23:53,429 INFO L131 PetriNetUnfolder]: For 1880/2118 co-relation queries the response was YES. [2022-10-17 10:23:53,433 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2153 conditions, 602 events. 210/602 cut-off events. For 1880/2118 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 2682 event pairs, 61 based on Foata normal form. 20/592 useless extension candidates. Maximal degree in co-relation 2075. Up to 233 conditions per place. [2022-10-17 10:23:53,437 INFO L137 encePairwiseOnDemand]: 104/115 looper letters, 30 selfloop transitions, 12 changer transitions 37/153 dead transitions. [2022-10-17 10:23:53,437 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 138 places, 153 transitions, 913 flow [2022-10-17 10:23:53,438 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-10-17 10:23:53,438 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2022-10-17 10:23:53,441 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 1129 transitions. [2022-10-17 10:23:53,442 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8181159420289855 [2022-10-17 10:23:53,442 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 1129 transitions. [2022-10-17 10:23:53,442 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 1129 transitions. [2022-10-17 10:23:53,443 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-10-17 10:23:53,444 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 1129 transitions. [2022-10-17 10:23:53,447 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 94.08333333333333) internal successors, (1129), 12 states have internal predecessors, (1129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:23:53,451 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 115.0) internal successors, (1495), 13 states have internal predecessors, (1495), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:23:53,452 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 115.0) internal successors, (1495), 13 states have internal predecessors, (1495), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:23:53,452 INFO L175 Difference]: Start difference. First operand has 130 places, 105 transitions, 385 flow. Second operand 12 states and 1129 transitions. [2022-10-17 10:23:53,452 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 138 places, 153 transitions, 913 flow [2022-10-17 10:23:53,462 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 130 places, 153 transitions, 857 flow, removed 18 selfloop flow, removed 8 redundant places. [2022-10-17 10:23:53,465 INFO L231 Difference]: Finished difference. Result has 140 places, 112 transitions, 475 flow [2022-10-17 10:23:53,465 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=115, PETRI_DIFFERENCE_MINUEND_FLOW=345, PETRI_DIFFERENCE_MINUEND_PLACES=119, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=105, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=95, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=475, PETRI_PLACES=140, PETRI_TRANSITIONS=112} [2022-10-17 10:23:53,466 INFO L287 CegarLoopForPetriNet]: 120 programPoint places, 20 predicate places. [2022-10-17 10:23:53,467 INFO L495 AbstractCegarLoop]: Abstraction has has 140 places, 112 transitions, 475 flow [2022-10-17 10:23:53,467 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 90.375) internal successors, (723), 8 states have internal predecessors, (723), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:23:53,467 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-10-17 10:23:53,468 INFO L208 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] [2022-10-17 10:23:53,468 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-10-17 10:23:53,468 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2022-10-17 10:23:53,469 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:23:53,469 INFO L85 PathProgramCache]: Analyzing trace with hash -27801226, now seen corresponding path program 2 times [2022-10-17 10:23:53,469 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:23:53,469 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [816095833] [2022-10-17 10:23:53,469 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:23:53,469 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:23:53,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:23:55,075 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 10:23:55,076 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:23:55,076 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [816095833] [2022-10-17 10:23:55,076 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [816095833] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:23:55,076 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:23:55,076 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-10-17 10:23:55,076 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1418605909] [2022-10-17 10:23:55,077 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:23:55,077 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-10-17 10:23:55,078 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:23:55,078 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-10-17 10:23:55,080 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2022-10-17 10:23:55,081 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 86 out of 115 [2022-10-17 10:23:55,083 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 140 places, 112 transitions, 475 flow. Second operand has 11 states, 11 states have (on average 87.9090909090909) internal successors, (967), 11 states have internal predecessors, (967), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:23:55,083 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-10-17 10:23:55,083 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 86 of 115 [2022-10-17 10:23:55,084 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-10-17 10:23:56,038 INFO L130 PetriNetUnfolder]: 232/677 cut-off events. [2022-10-17 10:23:56,040 INFO L131 PetriNetUnfolder]: For 4559/6619 co-relation queries the response was YES. [2022-10-17 10:23:56,045 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3096 conditions, 677 events. 232/677 cut-off events. For 4559/6619 co-relation queries the response was YES. Maximal size of possible extension queue 50. Compared 3522 event pairs, 12 based on Foata normal form. 32/679 useless extension candidates. Maximal degree in co-relation 3014. Up to 248 conditions per place. [2022-10-17 10:23:56,050 INFO L137 encePairwiseOnDemand]: 103/115 looper letters, 39 selfloop transitions, 12 changer transitions 42/165 dead transitions. [2022-10-17 10:23:56,050 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 147 places, 165 transitions, 1274 flow [2022-10-17 10:23:56,051 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-10-17 10:23:56,051 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2022-10-17 10:23:56,055 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 1457 transitions. [2022-10-17 10:23:56,056 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.7918478260869565 [2022-10-17 10:23:56,056 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 1457 transitions. [2022-10-17 10:23:56,057 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 1457 transitions. [2022-10-17 10:23:56,058 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-10-17 10:23:56,059 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 1457 transitions. [2022-10-17 10:23:56,065 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 91.0625) internal successors, (1457), 16 states have internal predecessors, (1457), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:23:56,071 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 115.0) internal successors, (1955), 17 states have internal predecessors, (1955), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:23:56,072 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 115.0) internal successors, (1955), 17 states have internal predecessors, (1955), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:23:56,073 INFO L175 Difference]: Start difference. First operand has 140 places, 112 transitions, 475 flow. Second operand 16 states and 1457 transitions. [2022-10-17 10:23:56,073 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 147 places, 165 transitions, 1274 flow [2022-10-17 10:23:56,083 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 139 places, 165 transitions, 1066 flow, removed 104 selfloop flow, removed 8 redundant places. [2022-10-17 10:23:56,087 INFO L231 Difference]: Finished difference. Result has 151 places, 117 transitions, 555 flow [2022-10-17 10:23:56,088 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=115, PETRI_DIFFERENCE_MINUEND_FLOW=419, PETRI_DIFFERENCE_MINUEND_PLACES=124, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=112, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=102, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=555, PETRI_PLACES=151, PETRI_TRANSITIONS=117} [2022-10-17 10:23:56,089 INFO L287 CegarLoopForPetriNet]: 120 programPoint places, 31 predicate places. [2022-10-17 10:23:56,089 INFO L495 AbstractCegarLoop]: Abstraction has has 151 places, 117 transitions, 555 flow [2022-10-17 10:23:56,090 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 87.9090909090909) internal successors, (967), 11 states have internal predecessors, (967), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:23:56,091 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-10-17 10:23:56,091 INFO L208 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] [2022-10-17 10:23:56,091 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-10-17 10:23:56,091 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2022-10-17 10:23:56,092 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:23:56,092 INFO L85 PathProgramCache]: Analyzing trace with hash -653993261, now seen corresponding path program 1 times [2022-10-17 10:23:56,092 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:23:56,093 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1158345018] [2022-10-17 10:23:56,093 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:23:56,093 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:23:56,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:23:57,047 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 10:23:57,048 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:23:57,048 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1158345018] [2022-10-17 10:23:57,049 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1158345018] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:23:57,049 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:23:57,049 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-10-17 10:23:57,049 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1708307643] [2022-10-17 10:23:57,049 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:23:57,050 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-10-17 10:23:57,050 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:23:57,051 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-10-17 10:23:57,051 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2022-10-17 10:23:57,052 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 90 out of 115 [2022-10-17 10:23:57,053 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 151 places, 117 transitions, 555 flow. Second operand has 9 states, 9 states have (on average 92.0) internal successors, (828), 9 states have internal predecessors, (828), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:23:57,054 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-10-17 10:23:57,054 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 90 of 115 [2022-10-17 10:23:57,054 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-10-17 10:23:57,575 INFO L130 PetriNetUnfolder]: 139/509 cut-off events. [2022-10-17 10:23:57,575 INFO L131 PetriNetUnfolder]: For 2016/2316 co-relation queries the response was YES. [2022-10-17 10:23:57,579 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1981 conditions, 509 events. 139/509 cut-off events. For 2016/2316 co-relation queries the response was YES. Maximal size of possible extension queue 51. Compared 2704 event pairs, 44 based on Foata normal form. 16/511 useless extension candidates. Maximal degree in co-relation 1896. Up to 229 conditions per place. [2022-10-17 10:23:57,584 INFO L137 encePairwiseOnDemand]: 103/115 looper letters, 32 selfloop transitions, 16 changer transitions 19/143 dead transitions. [2022-10-17 10:23:57,584 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 152 places, 143 transitions, 917 flow [2022-10-17 10:23:57,584 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-10-17 10:23:57,584 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2022-10-17 10:23:57,588 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 1038 transitions. [2022-10-17 10:23:57,589 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8205533596837945 [2022-10-17 10:23:57,589 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 1038 transitions. [2022-10-17 10:23:57,590 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 1038 transitions. [2022-10-17 10:23:57,590 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-10-17 10:23:57,590 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 1038 transitions. [2022-10-17 10:23:57,593 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 94.36363636363636) internal successors, (1038), 11 states have internal predecessors, (1038), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:23:57,597 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 115.0) internal successors, (1380), 12 states have internal predecessors, (1380), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:23:57,598 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 115.0) internal successors, (1380), 12 states have internal predecessors, (1380), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:23:57,598 INFO L175 Difference]: Start difference. First operand has 151 places, 117 transitions, 555 flow. Second operand 11 states and 1038 transitions. [2022-10-17 10:23:57,598 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 152 places, 143 transitions, 917 flow [2022-10-17 10:23:57,608 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 140 places, 143 transitions, 847 flow, removed 32 selfloop flow, removed 12 redundant places. [2022-10-17 10:23:57,611 INFO L231 Difference]: Finished difference. Result has 147 places, 122 transitions, 651 flow [2022-10-17 10:23:57,612 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=115, PETRI_DIFFERENCE_MINUEND_FLOW=509, PETRI_DIFFERENCE_MINUEND_PLACES=130, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=117, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=101, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=651, PETRI_PLACES=147, PETRI_TRANSITIONS=122} [2022-10-17 10:23:57,612 INFO L287 CegarLoopForPetriNet]: 120 programPoint places, 27 predicate places. [2022-10-17 10:23:57,613 INFO L495 AbstractCegarLoop]: Abstraction has has 147 places, 122 transitions, 651 flow [2022-10-17 10:23:57,613 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 92.0) internal successors, (828), 9 states have internal predecessors, (828), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:23:57,613 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-10-17 10:23:57,614 INFO L208 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] [2022-10-17 10:23:57,614 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-10-17 10:23:57,614 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2022-10-17 10:23:57,614 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:23:57,615 INFO L85 PathProgramCache]: Analyzing trace with hash 793725965, now seen corresponding path program 2 times [2022-10-17 10:23:57,615 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:23:57,615 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [729850595] [2022-10-17 10:23:57,615 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:23:57,615 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:23:57,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:23:57,998 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 10:23:57,998 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:23:57,999 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [729850595] [2022-10-17 10:23:57,999 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [729850595] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:23:57,999 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:23:57,999 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-10-17 10:23:57,999 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1861864840] [2022-10-17 10:23:57,999 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:23:58,000 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-10-17 10:23:58,000 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:23:58,000 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-10-17 10:23:58,001 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-10-17 10:23:58,001 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 115 [2022-10-17 10:23:58,002 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 147 places, 122 transitions, 651 flow. Second operand has 6 states, 6 states have (on average 91.66666666666667) internal successors, (550), 6 states have internal predecessors, (550), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:23:58,002 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-10-17 10:23:58,002 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 115 [2022-10-17 10:23:58,003 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-10-17 10:23:59,594 INFO L130 PetriNetUnfolder]: 1965/3783 cut-off events. [2022-10-17 10:23:59,594 INFO L131 PetriNetUnfolder]: For 26660/26699 co-relation queries the response was YES. [2022-10-17 10:23:59,614 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14986 conditions, 3783 events. 1965/3783 cut-off events. For 26660/26699 co-relation queries the response was YES. Maximal size of possible extension queue 221. Compared 25589 event pairs, 67 based on Foata normal form. 39/3740 useless extension candidates. Maximal degree in co-relation 14905. Up to 1203 conditions per place. [2022-10-17 10:23:59,640 INFO L137 encePairwiseOnDemand]: 105/115 looper letters, 59 selfloop transitions, 6 changer transitions 97/239 dead transitions. [2022-10-17 10:23:59,640 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 150 places, 239 transitions, 2226 flow [2022-10-17 10:23:59,641 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-10-17 10:23:59,641 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-10-17 10:23:59,643 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 983 transitions. [2022-10-17 10:23:59,644 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8547826086956521 [2022-10-17 10:23:59,644 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 983 transitions. [2022-10-17 10:23:59,644 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 983 transitions. [2022-10-17 10:23:59,645 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-10-17 10:23:59,645 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 983 transitions. [2022-10-17 10:23:59,647 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 98.3) internal successors, (983), 10 states have internal predecessors, (983), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:23:59,650 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 115.0) internal successors, (1265), 11 states have internal predecessors, (1265), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:23:59,651 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 115.0) internal successors, (1265), 11 states have internal predecessors, (1265), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:23:59,651 INFO L175 Difference]: Start difference. First operand has 147 places, 122 transitions, 651 flow. Second operand 10 states and 983 transitions. [2022-10-17 10:23:59,651 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 150 places, 239 transitions, 2226 flow [2022-10-17 10:23:59,678 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 138 places, 239 transitions, 2062 flow, removed 39 selfloop flow, removed 12 redundant places. [2022-10-17 10:23:59,682 INFO L231 Difference]: Finished difference. Result has 144 places, 115 transitions, 550 flow [2022-10-17 10:23:59,682 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=115, PETRI_DIFFERENCE_MINUEND_FLOW=496, PETRI_DIFFERENCE_MINUEND_PLACES=129, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=113, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=107, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=550, PETRI_PLACES=144, PETRI_TRANSITIONS=115} [2022-10-17 10:23:59,683 INFO L287 CegarLoopForPetriNet]: 120 programPoint places, 24 predicate places. [2022-10-17 10:23:59,683 INFO L495 AbstractCegarLoop]: Abstraction has has 144 places, 115 transitions, 550 flow [2022-10-17 10:23:59,684 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 91.66666666666667) internal successors, (550), 6 states have internal predecessors, (550), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:23:59,684 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-10-17 10:23:59,684 INFO L208 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] [2022-10-17 10:23:59,684 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-10-17 10:23:59,685 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2022-10-17 10:23:59,685 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:23:59,685 INFO L85 PathProgramCache]: Analyzing trace with hash 1579445725, now seen corresponding path program 1 times [2022-10-17 10:23:59,685 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:23:59,686 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1403517071] [2022-10-17 10:23:59,686 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:23:59,686 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:23:59,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:24:00,114 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 10:24:00,115 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:24:00,115 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1403517071] [2022-10-17 10:24:00,115 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1403517071] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:24:00,115 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:24:00,115 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-10-17 10:24:00,116 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [134575733] [2022-10-17 10:24:00,116 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:24:00,116 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-10-17 10:24:00,116 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:24:00,117 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-10-17 10:24:00,117 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-10-17 10:24:00,118 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 115 [2022-10-17 10:24:00,119 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 144 places, 115 transitions, 550 flow. Second operand has 7 states, 7 states have (on average 91.42857142857143) internal successors, (640), 7 states have internal predecessors, (640), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:24:00,119 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-10-17 10:24:00,119 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 115 [2022-10-17 10:24:00,119 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand