./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/pthread-wmm/mix021_power.oepc_pso.oepc_rmo.oepc.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version e04fb08f Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f068ede-98fc-43b7-9582-fd9728820210/bin/uautomizer-tPACEb0tL8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f068ede-98fc-43b7-9582-fd9728820210/bin/uautomizer-tPACEb0tL8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f068ede-98fc-43b7-9582-fd9728820210/bin/uautomizer-tPACEb0tL8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f068ede-98fc-43b7-9582-fd9728820210/bin/uautomizer-tPACEb0tL8/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread-wmm/mix021_power.oepc_pso.oepc_rmo.oepc.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f068ede-98fc-43b7-9582-fd9728820210/bin/uautomizer-tPACEb0tL8/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f068ede-98fc-43b7-9582-fd9728820210/bin/uautomizer-tPACEb0tL8 --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 8943650a21e052edc6a6af145da55799620df509a78c8e503eca6167eaa2f8fc --- 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-e04fb08 [2022-11-16 11:59:59,146 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-16 11:59:59,148 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-16 11:59:59,195 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-16 11:59:59,195 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-16 11:59:59,197 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-16 11:59:59,198 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-16 11:59:59,210 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-16 11:59:59,213 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-16 11:59:59,216 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-16 11:59:59,217 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-16 11:59:59,219 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-16 11:59:59,219 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-16 11:59:59,220 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-16 11:59:59,222 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-16 11:59:59,223 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-16 11:59:59,224 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-16 11:59:59,225 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-16 11:59:59,231 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-16 11:59:59,241 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-16 11:59:59,247 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-16 11:59:59,252 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-16 11:59:59,253 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-16 11:59:59,255 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-16 11:59:59,259 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-16 11:59:59,259 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-16 11:59:59,259 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-16 11:59:59,261 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-16 11:59:59,261 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-16 11:59:59,262 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-16 11:59:59,268 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-16 11:59:59,270 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-16 11:59:59,273 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-16 11:59:59,274 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-16 11:59:59,277 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-16 11:59:59,277 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-16 11:59:59,278 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-16 11:59:59,279 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-16 11:59:59,279 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-16 11:59:59,280 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-16 11:59:59,281 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-16 11:59:59,282 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f068ede-98fc-43b7-9582-fd9728820210/bin/uautomizer-tPACEb0tL8/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-11-16 11:59:59,335 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-16 11:59:59,336 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-16 11:59:59,356 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-16 11:59:59,356 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-16 11:59:59,357 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-16 11:59:59,358 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-16 11:59:59,359 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-16 11:59:59,359 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-16 11:59:59,359 INFO L138 SettingsManager]: * Use SBE=true [2022-11-16 11:59:59,360 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-16 11:59:59,361 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-16 11:59:59,361 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-16 11:59:59,362 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-16 11:59:59,362 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-16 11:59:59,362 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-16 11:59:59,362 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-16 11:59:59,363 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-16 11:59:59,363 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-16 11:59:59,363 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-16 11:59:59,363 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-16 11:59:59,364 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-16 11:59:59,364 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-16 11:59:59,364 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-16 11:59:59,364 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-16 11:59:59,365 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 11:59:59,365 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-16 11:59:59,368 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-16 11:59:59,368 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-16 11:59:59,368 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-16 11:59:59,369 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-16 11:59:59,369 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-16 11:59:59,369 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-16 11:59:59,370 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-16 11:59:59,370 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_5f068ede-98fc-43b7-9582-fd9728820210/bin/uautomizer-tPACEb0tL8/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f068ede-98fc-43b7-9582-fd9728820210/bin/uautomizer-tPACEb0tL8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 8943650a21e052edc6a6af145da55799620df509a78c8e503eca6167eaa2f8fc [2022-11-16 11:59:59,744 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-16 11:59:59,774 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-16 11:59:59,779 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-16 11:59:59,780 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-16 11:59:59,782 INFO L275 PluginConnector]: CDTParser initialized [2022-11-16 11:59:59,783 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f068ede-98fc-43b7-9582-fd9728820210/bin/uautomizer-tPACEb0tL8/../../sv-benchmarks/c/pthread-wmm/mix021_power.oepc_pso.oepc_rmo.oepc.i [2022-11-16 11:59:59,887 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f068ede-98fc-43b7-9582-fd9728820210/bin/uautomizer-tPACEb0tL8/data/819ce76a4/64f7bc70ee5a4cafa498f370014ccef2/FLAG0fe631ccc [2022-11-16 12:00:00,623 INFO L306 CDTParser]: Found 1 translation units. [2022-11-16 12:00:00,624 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f068ede-98fc-43b7-9582-fd9728820210/sv-benchmarks/c/pthread-wmm/mix021_power.oepc_pso.oepc_rmo.oepc.i [2022-11-16 12:00:00,641 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f068ede-98fc-43b7-9582-fd9728820210/bin/uautomizer-tPACEb0tL8/data/819ce76a4/64f7bc70ee5a4cafa498f370014ccef2/FLAG0fe631ccc [2022-11-16 12:00:00,845 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f068ede-98fc-43b7-9582-fd9728820210/bin/uautomizer-tPACEb0tL8/data/819ce76a4/64f7bc70ee5a4cafa498f370014ccef2 [2022-11-16 12:00:00,848 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-16 12:00:00,849 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-16 12:00:00,851 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-16 12:00:00,851 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-16 12:00:00,855 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-16 12:00:00,856 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 12:00:00" (1/1) ... [2022-11-16 12:00:00,858 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@53a4432f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:00:00, skipping insertion in model container [2022-11-16 12:00:00,858 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 12:00:00" (1/1) ... [2022-11-16 12:00:00,866 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-16 12:00:00,924 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-16 12:00:01,165 WARN L229 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_5f068ede-98fc-43b7-9582-fd9728820210/sv-benchmarks/c/pthread-wmm/mix021_power.oepc_pso.oepc_rmo.oepc.i[969,982] [2022-11-16 12:00:01,451 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 12:00:01,462 INFO L203 MainTranslator]: Completed pre-run [2022-11-16 12:00:01,486 WARN L229 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_5f068ede-98fc-43b7-9582-fd9728820210/sv-benchmarks/c/pthread-wmm/mix021_power.oepc_pso.oepc_rmo.oepc.i[969,982] [2022-11-16 12:00:01,550 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 12:00:01,588 INFO L208 MainTranslator]: Completed translation [2022-11-16 12:00:01,589 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:00:01 WrapperNode [2022-11-16 12:00:01,589 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-16 12:00:01,590 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-16 12:00:01,591 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-16 12:00:01,591 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-16 12:00:01,604 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:00:01" (1/1) ... [2022-11-16 12:00:01,645 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:00:01" (1/1) ... [2022-11-16 12:00:01,703 INFO L138 Inliner]: procedures = 177, calls = 69, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 144 [2022-11-16 12:00:01,706 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-16 12:00:01,708 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-16 12:00:01,708 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-16 12:00:01,708 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-16 12:00:01,720 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:00:01" (1/1) ... [2022-11-16 12:00:01,720 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:00:01" (1/1) ... [2022-11-16 12:00:01,738 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:00:01" (1/1) ... [2022-11-16 12:00:01,738 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:00:01" (1/1) ... [2022-11-16 12:00:01,746 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:00:01" (1/1) ... [2022-11-16 12:00:01,749 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:00:01" (1/1) ... [2022-11-16 12:00:01,767 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:00:01" (1/1) ... [2022-11-16 12:00:01,769 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:00:01" (1/1) ... [2022-11-16 12:00:01,773 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-16 12:00:01,774 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-16 12:00:01,774 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-16 12:00:01,774 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-16 12:00:01,791 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:00:01" (1/1) ... [2022-11-16 12:00:01,799 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 12:00:01,814 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f068ede-98fc-43b7-9582-fd9728820210/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:00:01,831 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f068ede-98fc-43b7-9582-fd9728820210/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-16 12:00:01,865 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f068ede-98fc-43b7-9582-fd9728820210/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-16 12:00:01,903 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-16 12:00:01,904 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-11-16 12:00:01,904 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-16 12:00:01,904 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-16 12:00:01,904 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-16 12:00:01,905 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2022-11-16 12:00:01,905 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2022-11-16 12:00:01,905 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2022-11-16 12:00:01,905 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2022-11-16 12:00:01,905 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2022-11-16 12:00:01,906 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2022-11-16 12:00:01,906 INFO L130 BoogieDeclarations]: Found specification of procedure P3 [2022-11-16 12:00:01,906 INFO L138 BoogieDeclarations]: Found implementation of procedure P3 [2022-11-16 12:00:01,906 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-16 12:00:01,907 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-11-16 12:00:01,907 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-16 12:00:01,907 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-16 12:00:01,909 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-16 12:00:02,221 INFO L235 CfgBuilder]: Building ICFG [2022-11-16 12:00:02,223 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-16 12:00:02,778 INFO L276 CfgBuilder]: Performing block encoding [2022-11-16 12:00:03,014 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-16 12:00:03,014 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-11-16 12:00:03,017 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 12:00:03 BoogieIcfgContainer [2022-11-16 12:00:03,017 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-16 12:00:03,020 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-16 12:00:03,021 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-16 12:00:03,025 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-16 12:00:03,026 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.11 12:00:00" (1/3) ... [2022-11-16 12:00:03,026 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@49aa6165 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 12:00:03, skipping insertion in model container [2022-11-16 12:00:03,027 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:00:01" (2/3) ... [2022-11-16 12:00:03,027 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@49aa6165 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 12:00:03, skipping insertion in model container [2022-11-16 12:00:03,028 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 12:00:03" (3/3) ... [2022-11-16 12:00:03,029 INFO L112 eAbstractionObserver]: Analyzing ICFG mix021_power.oepc_pso.oepc_rmo.oepc.i [2022-11-16 12:00:03,040 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-16 12:00:03,053 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-16 12:00:03,053 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-11-16 12:00:03,054 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-16 12:00:03,159 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-11-16 12:00:03,226 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 148 places, 137 transitions, 294 flow [2022-11-16 12:00:03,287 INFO L130 PetriNetUnfolder]: 2/133 cut-off events. [2022-11-16 12:00:03,287 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-16 12:00:03,294 INFO L83 FinitePrefix]: Finished finitePrefix Result has 146 conditions, 133 events. 2/133 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 71 event pairs, 0 based on Foata normal form. 0/129 useless extension candidates. Maximal degree in co-relation 92. Up to 2 conditions per place. [2022-11-16 12:00:03,294 INFO L82 GeneralOperation]: Start removeDead. Operand has 148 places, 137 transitions, 294 flow [2022-11-16 12:00:03,299 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 144 places, 133 transitions, 278 flow [2022-11-16 12:00:03,310 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-16 12:00:03,318 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;@2a203526, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-16 12:00:03,319 INFO L358 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2022-11-16 12:00:03,332 INFO L130 PetriNetUnfolder]: 0/50 cut-off events. [2022-11-16 12:00:03,333 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-16 12:00:03,333 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:00:03,334 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:00:03,334 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting P0Err0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-11-16 12:00:03,340 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:00:03,341 INFO L85 PathProgramCache]: Analyzing trace with hash -1278159159, now seen corresponding path program 1 times [2022-11-16 12:00:03,352 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:00:03,352 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [368961733] [2022-11-16 12:00:03,353 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:00:03,353 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:00:03,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:00:04,054 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:00:04,054 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:00:04,055 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [368961733] [2022-11-16 12:00:04,055 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [368961733] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:00:04,056 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:00:04,056 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-16 12:00:04,057 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1545097023] [2022-11-16 12:00:04,058 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:00:04,066 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 12:00:04,067 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:00:04,100 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 12:00:04,102 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 12:00:04,105 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 121 out of 137 [2022-11-16 12:00:04,109 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 144 places, 133 transitions, 278 flow. Second operand has 3 states, 3 states have (on average 122.0) internal successors, (366), 3 states have internal predecessors, (366), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:00:04,110 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:00:04,110 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 121 of 137 [2022-11-16 12:00:04,111 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:00:04,446 INFO L130 PetriNetUnfolder]: 162/620 cut-off events. [2022-11-16 12:00:04,447 INFO L131 PetriNetUnfolder]: For 22/22 co-relation queries the response was YES. [2022-11-16 12:00:04,452 INFO L83 FinitePrefix]: Finished finitePrefix Result has 926 conditions, 620 events. 162/620 cut-off events. For 22/22 co-relation queries the response was YES. Maximal size of possible extension queue 47. Compared 3411 event pairs, 132 based on Foata normal form. 41/619 useless extension candidates. Maximal degree in co-relation 869. Up to 191 conditions per place. [2022-11-16 12:00:04,458 INFO L137 encePairwiseOnDemand]: 132/137 looper letters, 18 selfloop transitions, 2 changer transitions 0/137 dead transitions. [2022-11-16 12:00:04,458 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 144 places, 137 transitions, 335 flow [2022-11-16 12:00:04,460 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 12:00:04,463 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-16 12:00:04,472 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 388 transitions. [2022-11-16 12:00:04,475 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9440389294403893 [2022-11-16 12:00:04,476 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 388 transitions. [2022-11-16 12:00:04,476 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 388 transitions. [2022-11-16 12:00:04,478 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:00:04,485 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 388 transitions. [2022-11-16 12:00:04,493 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 129.33333333333334) internal successors, (388), 3 states have internal predecessors, (388), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:00:04,504 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 137.0) internal successors, (548), 4 states have internal predecessors, (548), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:00:04,507 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 137.0) internal successors, (548), 4 states have internal predecessors, (548), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:00:04,509 INFO L175 Difference]: Start difference. First operand has 144 places, 133 transitions, 278 flow. Second operand 3 states and 388 transitions. [2022-11-16 12:00:04,511 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 144 places, 137 transitions, 335 flow [2022-11-16 12:00:04,516 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 140 places, 137 transitions, 328 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-11-16 12:00:04,520 INFO L231 Difference]: Finished difference. Result has 140 places, 129 transitions, 270 flow [2022-11-16 12:00:04,522 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=137, PETRI_DIFFERENCE_MINUEND_FLOW=266, PETRI_DIFFERENCE_MINUEND_PLACES=138, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=129, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=127, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=270, PETRI_PLACES=140, PETRI_TRANSITIONS=129} [2022-11-16 12:00:04,532 INFO L288 CegarLoopForPetriNet]: 144 programPoint places, -4 predicate places. [2022-11-16 12:00:04,532 INFO L495 AbstractCegarLoop]: Abstraction has has 140 places, 129 transitions, 270 flow [2022-11-16 12:00:04,533 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 122.0) internal successors, (366), 3 states have internal predecessors, (366), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:00:04,533 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:00:04,534 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:00:04,534 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-16 12:00:04,535 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-11-16 12:00:04,536 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:00:04,539 INFO L85 PathProgramCache]: Analyzing trace with hash 2119633754, now seen corresponding path program 1 times [2022-11-16 12:00:04,539 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:00:04,540 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [931480556] [2022-11-16 12:00:04,540 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:00:04,540 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:00:04,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:00:05,240 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:00:05,241 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:00:05,241 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [931480556] [2022-11-16 12:00:05,242 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [931480556] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:00:05,242 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:00:05,242 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-16 12:00:05,243 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1469853348] [2022-11-16 12:00:05,243 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:00:05,244 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-16 12:00:05,245 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:00:05,246 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-16 12:00:05,246 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-11-16 12:00:05,249 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 104 out of 137 [2022-11-16 12:00:05,250 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 140 places, 129 transitions, 270 flow. Second operand has 7 states, 7 states have (on average 106.28571428571429) internal successors, (744), 7 states have internal predecessors, (744), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:00:05,251 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:00:05,251 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 104 of 137 [2022-11-16 12:00:05,251 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:00:11,883 INFO L130 PetriNetUnfolder]: 13320/29116 cut-off events. [2022-11-16 12:00:11,883 INFO L131 PetriNetUnfolder]: For 1069/1069 co-relation queries the response was YES. [2022-11-16 12:00:12,018 INFO L83 FinitePrefix]: Finished finitePrefix Result has 48585 conditions, 29116 events. 13320/29116 cut-off events. For 1069/1069 co-relation queries the response was YES. Maximal size of possible extension queue 1159. Compared 301499 event pairs, 1164 based on Foata normal form. 0/28582 useless extension candidates. Maximal degree in co-relation 48525. Up to 6340 conditions per place. [2022-11-16 12:00:12,122 INFO L137 encePairwiseOnDemand]: 125/137 looper letters, 46 selfloop transitions, 8 changer transitions 125/266 dead transitions. [2022-11-16 12:00:12,123 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 152 places, 266 transitions, 898 flow [2022-11-16 12:00:12,124 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-16 12:00:12,124 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2022-11-16 12:00:12,128 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1521 transitions. [2022-11-16 12:00:12,130 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8540145985401459 [2022-11-16 12:00:12,131 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 1521 transitions. [2022-11-16 12:00:12,131 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 1521 transitions. [2022-11-16 12:00:12,132 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:00:12,132 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 1521 transitions. [2022-11-16 12:00:12,137 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 117.0) internal successors, (1521), 13 states have internal predecessors, (1521), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:00:12,143 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 137.0) internal successors, (1918), 14 states have internal predecessors, (1918), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:00:12,145 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 137.0) internal successors, (1918), 14 states have internal predecessors, (1918), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:00:12,145 INFO L175 Difference]: Start difference. First operand has 140 places, 129 transitions, 270 flow. Second operand 13 states and 1521 transitions. [2022-11-16 12:00:12,146 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 152 places, 266 transitions, 898 flow [2022-11-16 12:00:12,151 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 150 places, 266 transitions, 872 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-16 12:00:12,156 INFO L231 Difference]: Finished difference. Result has 162 places, 121 transitions, 352 flow [2022-11-16 12:00:12,156 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=137, PETRI_DIFFERENCE_MINUEND_FLOW=266, PETRI_DIFFERENCE_MINUEND_PLACES=138, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=129, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=121, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=352, PETRI_PLACES=162, PETRI_TRANSITIONS=121} [2022-11-16 12:00:12,157 INFO L288 CegarLoopForPetriNet]: 144 programPoint places, 18 predicate places. [2022-11-16 12:00:12,158 INFO L495 AbstractCegarLoop]: Abstraction has has 162 places, 121 transitions, 352 flow [2022-11-16 12:00:12,159 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 106.28571428571429) internal successors, (744), 7 states have internal predecessors, (744), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:00:12,159 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:00:12,160 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:00:12,160 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-16 12:00:12,160 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-11-16 12:00:12,163 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:00:12,164 INFO L85 PathProgramCache]: Analyzing trace with hash -383908476, now seen corresponding path program 1 times [2022-11-16 12:00:12,164 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:00:12,164 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [681253551] [2022-11-16 12:00:12,165 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:00:12,165 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:00:12,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:00:12,801 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:00:12,801 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:00:12,802 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [681253551] [2022-11-16 12:00:12,802 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [681253551] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:00:12,802 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:00:12,802 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-16 12:00:12,803 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1039824354] [2022-11-16 12:00:12,803 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:00:12,804 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-16 12:00:12,804 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:00:12,805 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-16 12:00:12,805 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-11-16 12:00:12,806 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 104 out of 137 [2022-11-16 12:00:12,808 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 162 places, 121 transitions, 352 flow. Second operand has 7 states, 7 states have (on average 106.42857142857143) internal successors, (745), 7 states have internal predecessors, (745), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:00:12,808 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:00:12,808 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 104 of 137 [2022-11-16 12:00:12,809 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:00:17,230 INFO L130 PetriNetUnfolder]: 9662/16481 cut-off events. [2022-11-16 12:00:17,230 INFO L131 PetriNetUnfolder]: For 33049/33049 co-relation queries the response was YES. [2022-11-16 12:00:17,295 INFO L83 FinitePrefix]: Finished finitePrefix Result has 51663 conditions, 16481 events. 9662/16481 cut-off events. For 33049/33049 co-relation queries the response was YES. Maximal size of possible extension queue 801. Compared 126295 event pairs, 1984 based on Foata normal form. 326/16434 useless extension candidates. Maximal degree in co-relation 51591. Up to 5235 conditions per place. [2022-11-16 12:00:17,366 INFO L137 encePairwiseOnDemand]: 124/137 looper letters, 49 selfloop transitions, 17 changer transitions 100/253 dead transitions. [2022-11-16 12:00:17,366 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 151 places, 253 transitions, 1432 flow [2022-11-16 12:00:17,367 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-16 12:00:17,367 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2022-11-16 12:00:17,370 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1515 transitions. [2022-11-16 12:00:17,371 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8506457046603032 [2022-11-16 12:00:17,371 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 1515 transitions. [2022-11-16 12:00:17,372 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 1515 transitions. [2022-11-16 12:00:17,373 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:00:17,373 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 1515 transitions. [2022-11-16 12:00:17,377 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 116.53846153846153) internal successors, (1515), 13 states have internal predecessors, (1515), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:00:17,382 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 137.0) internal successors, (1918), 14 states have internal predecessors, (1918), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:00:17,383 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 137.0) internal successors, (1918), 14 states have internal predecessors, (1918), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:00:17,384 INFO L175 Difference]: Start difference. First operand has 162 places, 121 transitions, 352 flow. Second operand 13 states and 1515 transitions. [2022-11-16 12:00:17,384 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 151 places, 253 transitions, 1432 flow [2022-11-16 12:00:17,597 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 147 places, 253 transitions, 1404 flow, removed 12 selfloop flow, removed 4 redundant places. [2022-11-16 12:00:17,602 INFO L231 Difference]: Finished difference. Result has 159 places, 130 transitions, 525 flow [2022-11-16 12:00:17,603 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=137, PETRI_DIFFERENCE_MINUEND_FLOW=344, PETRI_DIFFERENCE_MINUEND_PLACES=135, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=121, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=107, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=525, PETRI_PLACES=159, PETRI_TRANSITIONS=130} [2022-11-16 12:00:17,606 INFO L288 CegarLoopForPetriNet]: 144 programPoint places, 15 predicate places. [2022-11-16 12:00:17,606 INFO L495 AbstractCegarLoop]: Abstraction has has 159 places, 130 transitions, 525 flow [2022-11-16 12:00:17,607 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 106.42857142857143) internal successors, (745), 7 states have internal predecessors, (745), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:00:17,607 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:00:17,607 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:00:17,608 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-16 12:00:17,608 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-11-16 12:00:17,609 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:00:17,609 INFO L85 PathProgramCache]: Analyzing trace with hash -545408253, now seen corresponding path program 1 times [2022-11-16 12:00:17,609 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:00:17,610 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1391141576] [2022-11-16 12:00:17,610 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:00:17,610 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:00:17,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:00:17,998 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:00:17,999 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:00:17,999 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1391141576] [2022-11-16 12:00:18,000 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1391141576] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:00:18,000 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:00:18,000 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-16 12:00:18,000 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1663413995] [2022-11-16 12:00:18,001 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:00:18,003 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-16 12:00:18,007 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:00:18,008 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-16 12:00:18,008 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-16 12:00:18,009 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 112 out of 137 [2022-11-16 12:00:18,010 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 159 places, 130 transitions, 525 flow. Second operand has 6 states, 6 states have (on average 114.0) internal successors, (684), 6 states have internal predecessors, (684), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:00:18,010 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:00:18,010 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 112 of 137 [2022-11-16 12:00:18,011 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:00:21,132 INFO L130 PetriNetUnfolder]: 7125/13105 cut-off events. [2022-11-16 12:00:21,132 INFO L131 PetriNetUnfolder]: For 49009/50640 co-relation queries the response was YES. [2022-11-16 12:00:21,213 INFO L83 FinitePrefix]: Finished finitePrefix Result has 45108 conditions, 13105 events. 7125/13105 cut-off events. For 49009/50640 co-relation queries the response was YES. Maximal size of possible extension queue 766. Compared 107041 event pairs, 2662 based on Foata normal form. 548/13036 useless extension candidates. Maximal degree in co-relation 45028. Up to 5945 conditions per place. [2022-11-16 12:00:21,295 INFO L137 encePairwiseOnDemand]: 130/137 looper letters, 32 selfloop transitions, 7 changer transitions 67/211 dead transitions. [2022-11-16 12:00:21,296 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 158 places, 211 transitions, 1337 flow [2022-11-16 12:00:21,297 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-16 12:00:21,297 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-11-16 12:00:21,300 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1088 transitions. [2022-11-16 12:00:21,301 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8824006488240065 [2022-11-16 12:00:21,302 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1088 transitions. [2022-11-16 12:00:21,303 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1088 transitions. [2022-11-16 12:00:21,307 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:00:21,307 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1088 transitions. [2022-11-16 12:00:21,312 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 120.88888888888889) internal successors, (1088), 9 states have internal predecessors, (1088), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:00:21,316 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 137.0) internal successors, (1370), 10 states have internal predecessors, (1370), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:00:21,317 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 137.0) internal successors, (1370), 10 states have internal predecessors, (1370), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:00:21,318 INFO L175 Difference]: Start difference. First operand has 159 places, 130 transitions, 525 flow. Second operand 9 states and 1088 transitions. [2022-11-16 12:00:21,318 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 158 places, 211 transitions, 1337 flow [2022-11-16 12:00:21,749 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 149 places, 211 transitions, 1289 flow, removed 24 selfloop flow, removed 9 redundant places. [2022-11-16 12:00:21,755 INFO L231 Difference]: Finished difference. Result has 156 places, 136 transitions, 644 flow [2022-11-16 12:00:21,761 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=137, PETRI_DIFFERENCE_MINUEND_FLOW=501, PETRI_DIFFERENCE_MINUEND_PLACES=141, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=130, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=123, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=644, PETRI_PLACES=156, PETRI_TRANSITIONS=136} [2022-11-16 12:00:21,763 INFO L288 CegarLoopForPetriNet]: 144 programPoint places, 12 predicate places. [2022-11-16 12:00:21,763 INFO L495 AbstractCegarLoop]: Abstraction has has 156 places, 136 transitions, 644 flow [2022-11-16 12:00:21,763 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 114.0) internal successors, (684), 6 states have internal predecessors, (684), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:00:21,764 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:00:21,764 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:00:21,764 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-16 12:00:21,765 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-11-16 12:00:21,765 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:00:21,765 INFO L85 PathProgramCache]: Analyzing trace with hash 1100444344, now seen corresponding path program 1 times [2022-11-16 12:00:21,766 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:00:21,767 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [595282920] [2022-11-16 12:00:21,767 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:00:21,767 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:00:21,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:00:22,202 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:00:22,202 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:00:22,203 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [595282920] [2022-11-16 12:00:22,203 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [595282920] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:00:22,203 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:00:22,204 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-16 12:00:22,204 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1125732223] [2022-11-16 12:00:22,204 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:00:22,206 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-16 12:00:22,207 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:00:22,207 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-16 12:00:22,208 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-11-16 12:00:22,210 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 104 out of 137 [2022-11-16 12:00:22,211 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 156 places, 136 transitions, 644 flow. Second operand has 7 states, 7 states have (on average 106.71428571428571) internal successors, (747), 7 states have internal predecessors, (747), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:00:22,212 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:00:22,212 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 104 of 137 [2022-11-16 12:00:22,212 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:00:26,515 INFO L130 PetriNetUnfolder]: 9343/16694 cut-off events. [2022-11-16 12:00:26,515 INFO L131 PetriNetUnfolder]: For 66448/66698 co-relation queries the response was YES. [2022-11-16 12:00:26,610 INFO L83 FinitePrefix]: Finished finitePrefix Result has 59317 conditions, 16694 events. 9343/16694 cut-off events. For 66448/66698 co-relation queries the response was YES. Maximal size of possible extension queue 782. Compared 133553 event pairs, 2020 based on Foata normal form. 262/16265 useless extension candidates. Maximal degree in co-relation 59233. Up to 4348 conditions per place. [2022-11-16 12:00:26,699 INFO L137 encePairwiseOnDemand]: 125/137 looper letters, 58 selfloop transitions, 24 changer transitions 92/261 dead transitions. [2022-11-16 12:00:26,699 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 162 places, 261 transitions, 1822 flow [2022-11-16 12:00:26,700 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-16 12:00:26,700 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2022-11-16 12:00:26,704 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1498 transitions. [2022-11-16 12:00:26,705 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.841100505334082 [2022-11-16 12:00:26,705 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 1498 transitions. [2022-11-16 12:00:26,706 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 1498 transitions. [2022-11-16 12:00:26,707 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:00:26,707 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 1498 transitions. [2022-11-16 12:00:26,712 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 115.23076923076923) internal successors, (1498), 13 states have internal predecessors, (1498), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:00:26,716 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 137.0) internal successors, (1918), 14 states have internal predecessors, (1918), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:00:26,717 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 137.0) internal successors, (1918), 14 states have internal predecessors, (1918), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:00:26,718 INFO L175 Difference]: Start difference. First operand has 156 places, 136 transitions, 644 flow. Second operand 13 states and 1498 transitions. [2022-11-16 12:00:26,718 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 162 places, 261 transitions, 1822 flow [2022-11-16 12:00:26,955 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 158 places, 261 transitions, 1768 flow, removed 23 selfloop flow, removed 4 redundant places. [2022-11-16 12:00:26,964 INFO L231 Difference]: Finished difference. Result has 170 places, 143 transitions, 843 flow [2022-11-16 12:00:26,965 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=137, PETRI_DIFFERENCE_MINUEND_FLOW=627, PETRI_DIFFERENCE_MINUEND_PLACES=146, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=136, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=112, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=843, PETRI_PLACES=170, PETRI_TRANSITIONS=143} [2022-11-16 12:00:26,968 INFO L288 CegarLoopForPetriNet]: 144 programPoint places, 26 predicate places. [2022-11-16 12:00:26,968 INFO L495 AbstractCegarLoop]: Abstraction has has 170 places, 143 transitions, 843 flow [2022-11-16 12:00:26,969 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 106.71428571428571) internal successors, (747), 7 states have internal predecessors, (747), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:00:26,969 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:00:26,969 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:00:26,970 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-16 12:00:26,970 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-11-16 12:00:26,971 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:00:26,972 INFO L85 PathProgramCache]: Analyzing trace with hash 2124534054, now seen corresponding path program 1 times [2022-11-16 12:00:26,972 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:00:26,972 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [671444490] [2022-11-16 12:00:26,972 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:00:26,973 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:00:27,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:00:27,351 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:00:27,351 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:00:27,351 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [671444490] [2022-11-16 12:00:27,352 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [671444490] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:00:27,352 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:00:27,352 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-16 12:00:27,353 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1679590079] [2022-11-16 12:00:27,354 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:00:27,354 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-16 12:00:27,355 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:00:27,356 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-16 12:00:27,356 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-16 12:00:27,357 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 110 out of 137 [2022-11-16 12:00:27,360 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 170 places, 143 transitions, 843 flow. Second operand has 6 states, 6 states have (on average 112.0) internal successors, (672), 6 states have internal predecessors, (672), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:00:27,360 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:00:27,361 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 110 of 137 [2022-11-16 12:00:27,361 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:00:37,484 INFO L130 PetriNetUnfolder]: 29208/51369 cut-off events. [2022-11-16 12:00:37,484 INFO L131 PetriNetUnfolder]: For 102081/115221 co-relation queries the response was YES. [2022-11-16 12:00:37,886 INFO L83 FinitePrefix]: Finished finitePrefix Result has 126699 conditions, 51369 events. 29208/51369 cut-off events. For 102081/115221 co-relation queries the response was YES. Maximal size of possible extension queue 2844. Compared 491197 event pairs, 1817 based on Foata normal form. 555/49731 useless extension candidates. Maximal degree in co-relation 126609. Up to 16623 conditions per place. [2022-11-16 12:00:38,269 INFO L137 encePairwiseOnDemand]: 126/137 looper letters, 101 selfloop transitions, 20 changer transitions 0/239 dead transitions. [2022-11-16 12:00:38,271 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 170 places, 239 transitions, 1535 flow [2022-11-16 12:00:38,272 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-16 12:00:38,272 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-11-16 12:00:38,275 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1207 transitions. [2022-11-16 12:00:38,276 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.881021897810219 [2022-11-16 12:00:38,276 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1207 transitions. [2022-11-16 12:00:38,277 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1207 transitions. [2022-11-16 12:00:38,278 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:00:38,278 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1207 transitions. [2022-11-16 12:00:38,281 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 120.7) internal successors, (1207), 10 states have internal predecessors, (1207), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:00:38,285 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 137.0) internal successors, (1507), 11 states have internal predecessors, (1507), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:00:38,286 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 137.0) internal successors, (1507), 11 states have internal predecessors, (1507), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:00:38,287 INFO L175 Difference]: Start difference. First operand has 170 places, 143 transitions, 843 flow. Second operand 10 states and 1207 transitions. [2022-11-16 12:00:38,287 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 170 places, 239 transitions, 1535 flow [2022-11-16 12:00:38,447 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 167 places, 239 transitions, 1511 flow, removed 12 selfloop flow, removed 3 redundant places. [2022-11-16 12:00:38,450 INFO L231 Difference]: Finished difference. Result has 173 places, 161 transitions, 962 flow [2022-11-16 12:00:38,451 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=137, PETRI_DIFFERENCE_MINUEND_FLOW=819, PETRI_DIFFERENCE_MINUEND_PLACES=158, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=143, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=133, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=962, PETRI_PLACES=173, PETRI_TRANSITIONS=161} [2022-11-16 12:00:38,452 INFO L288 CegarLoopForPetriNet]: 144 programPoint places, 29 predicate places. [2022-11-16 12:00:38,452 INFO L495 AbstractCegarLoop]: Abstraction has has 173 places, 161 transitions, 962 flow [2022-11-16 12:00:38,452 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 112.0) internal successors, (672), 6 states have internal predecessors, (672), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:00:38,453 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:00:38,453 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:00:38,453 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-16 12:00:38,453 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-11-16 12:00:38,454 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:00:38,454 INFO L85 PathProgramCache]: Analyzing trace with hash -1422842106, now seen corresponding path program 1 times [2022-11-16 12:00:38,454 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:00:38,455 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1155099287] [2022-11-16 12:00:38,455 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:00:38,455 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:00:38,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:00:38,765 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:00:38,766 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:00:38,766 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1155099287] [2022-11-16 12:00:38,766 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1155099287] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:00:38,766 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:00:38,767 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-16 12:00:38,773 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [546480485] [2022-11-16 12:00:38,773 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:00:38,776 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-16 12:00:38,776 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:00:38,776 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-16 12:00:38,777 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-16 12:00:38,778 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 112 out of 137 [2022-11-16 12:00:38,779 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 173 places, 161 transitions, 962 flow. Second operand has 6 states, 6 states have (on average 114.5) internal successors, (687), 6 states have internal predecessors, (687), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:00:38,779 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:00:38,779 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 112 of 137 [2022-11-16 12:00:38,779 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:00:45,249 INFO L130 PetriNetUnfolder]: 10337/29309 cut-off events. [2022-11-16 12:00:45,250 INFO L131 PetriNetUnfolder]: For 89009/93609 co-relation queries the response was YES. [2022-11-16 12:00:45,771 INFO L83 FinitePrefix]: Finished finitePrefix Result has 89763 conditions, 29309 events. 10337/29309 cut-off events. For 89009/93609 co-relation queries the response was YES. Maximal size of possible extension queue 1944. Compared 383156 event pairs, 4227 based on Foata normal form. 602/27739 useless extension candidates. Maximal degree in co-relation 89667. Up to 5687 conditions per place. [2022-11-16 12:00:45,886 INFO L137 encePairwiseOnDemand]: 131/137 looper letters, 68 selfloop transitions, 18 changer transitions 6/221 dead transitions. [2022-11-16 12:00:45,886 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 181 places, 221 transitions, 1550 flow [2022-11-16 12:00:45,887 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-16 12:00:45,887 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-11-16 12:00:45,890 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1084 transitions. [2022-11-16 12:00:45,891 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8791565287915653 [2022-11-16 12:00:45,891 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1084 transitions. [2022-11-16 12:00:45,891 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1084 transitions. [2022-11-16 12:00:45,892 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:00:45,892 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1084 transitions. [2022-11-16 12:00:45,896 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 120.44444444444444) internal successors, (1084), 9 states have internal predecessors, (1084), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:00:45,899 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 137.0) internal successors, (1370), 10 states have internal predecessors, (1370), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:00:45,900 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 137.0) internal successors, (1370), 10 states have internal predecessors, (1370), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:00:45,900 INFO L175 Difference]: Start difference. First operand has 173 places, 161 transitions, 962 flow. Second operand 9 states and 1084 transitions. [2022-11-16 12:00:45,900 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 181 places, 221 transitions, 1550 flow [2022-11-16 12:00:46,558 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 179 places, 221 transitions, 1519 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-16 12:00:46,561 INFO L231 Difference]: Finished difference. Result has 186 places, 169 transitions, 1110 flow [2022-11-16 12:00:46,561 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=137, PETRI_DIFFERENCE_MINUEND_FLOW=938, PETRI_DIFFERENCE_MINUEND_PLACES=171, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=161, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=148, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1110, PETRI_PLACES=186, PETRI_TRANSITIONS=169} [2022-11-16 12:00:46,562 INFO L288 CegarLoopForPetriNet]: 144 programPoint places, 42 predicate places. [2022-11-16 12:00:46,562 INFO L495 AbstractCegarLoop]: Abstraction has has 186 places, 169 transitions, 1110 flow [2022-11-16 12:00:46,563 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 114.5) internal successors, (687), 6 states have internal predecessors, (687), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:00:46,563 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:00:46,563 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:00:46,563 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-16 12:00:46,563 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-11-16 12:00:46,564 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:00:46,564 INFO L85 PathProgramCache]: Analyzing trace with hash 1007757656, now seen corresponding path program 1 times [2022-11-16 12:00:46,564 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:00:46,564 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1620779176] [2022-11-16 12:00:46,564 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:00:46,565 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:00:46,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:00:47,011 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:00:47,011 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:00:47,011 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1620779176] [2022-11-16 12:00:47,012 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1620779176] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:00:47,012 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:00:47,012 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-16 12:00:47,012 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [434283821] [2022-11-16 12:00:47,013 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:00:47,013 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-16 12:00:47,013 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:00:47,014 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-16 12:00:47,014 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-11-16 12:00:47,016 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 110 out of 137 [2022-11-16 12:00:47,017 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 186 places, 169 transitions, 1110 flow. Second operand has 7 states, 7 states have (on average 112.0) internal successors, (784), 7 states have internal predecessors, (784), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:00:47,018 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:00:47,018 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 110 of 137 [2022-11-16 12:00:47,018 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand