./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/weaver/chl-sre-trans.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version dbf71c69 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8626d63-3d2c-4c2d-9dca-4c0519d23aed/bin/uautomizer-J5u9QxTXDZ/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8626d63-3d2c-4c2d-9dca-4c0519d23aed/bin/uautomizer-J5u9QxTXDZ/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8626d63-3d2c-4c2d-9dca-4c0519d23aed/bin/uautomizer-J5u9QxTXDZ/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8626d63-3d2c-4c2d-9dca-4c0519d23aed/bin/uautomizer-J5u9QxTXDZ/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/chl-sre-trans.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8626d63-3d2c-4c2d-9dca-4c0519d23aed/bin/uautomizer-J5u9QxTXDZ/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8626d63-3d2c-4c2d-9dca-4c0519d23aed/bin/uautomizer-J5u9QxTXDZ --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 672ab63d50f6d257836fb16bc257f69b3b166ee79333dc7cfe86a969c93c0f7f --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-dbf71c6-m [2022-10-17 10:41:58,399 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-10-17 10:41:58,405 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-10-17 10:41:58,458 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-10-17 10:41:58,459 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-10-17 10:41:58,463 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-10-17 10:41:58,465 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-10-17 10:41:58,469 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-10-17 10:41:58,474 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-10-17 10:41:58,479 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-10-17 10:41:58,481 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-10-17 10:41:58,483 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-10-17 10:41:58,484 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-10-17 10:41:58,487 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-10-17 10:41:58,489 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-10-17 10:41:58,491 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-10-17 10:41:58,493 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-10-17 10:41:58,494 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-10-17 10:41:58,496 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-10-17 10:41:58,503 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-10-17 10:41:58,505 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-10-17 10:41:58,507 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-10-17 10:41:58,510 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-10-17 10:41:58,511 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-10-17 10:41:58,522 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-10-17 10:41:58,522 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-10-17 10:41:58,523 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-10-17 10:41:58,524 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-10-17 10:41:58,525 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-10-17 10:41:58,526 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-10-17 10:41:58,527 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-10-17 10:41:58,529 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-10-17 10:41:58,531 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-10-17 10:41:58,533 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-10-17 10:41:58,534 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-10-17 10:41:58,534 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-10-17 10:41:58,535 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-10-17 10:41:58,535 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-10-17 10:41:58,536 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-10-17 10:41:58,537 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-10-17 10:41:58,537 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-10-17 10:41:58,539 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8626d63-3d2c-4c2d-9dca-4c0519d23aed/bin/uautomizer-J5u9QxTXDZ/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-10-17 10:41:58,579 INFO L113 SettingsManager]: Loading preferences was successful [2022-10-17 10:41:58,579 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-10-17 10:41:58,580 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-10-17 10:41:58,580 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-10-17 10:41:58,582 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-10-17 10:41:58,582 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-10-17 10:41:58,583 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-10-17 10:41:58,584 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-10-17 10:41:58,584 INFO L138 SettingsManager]: * Use SBE=true [2022-10-17 10:41:58,584 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-10-17 10:41:58,585 INFO L138 SettingsManager]: * sizeof long=4 [2022-10-17 10:41:58,586 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-10-17 10:41:58,586 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-10-17 10:41:58,586 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-10-17 10:41:58,586 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-10-17 10:41:58,587 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-10-17 10:41:58,587 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-10-17 10:41:58,587 INFO L138 SettingsManager]: * sizeof long double=12 [2022-10-17 10:41:58,587 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-10-17 10:41:58,589 INFO L138 SettingsManager]: * Use constant arrays=true [2022-10-17 10:41:58,589 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-10-17 10:41:58,595 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-10-17 10:41:58,595 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-10-17 10:41:58,595 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-10-17 10:41:58,596 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-17 10:41:58,596 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-10-17 10:41:58,596 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-10-17 10:41:58,596 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-10-17 10:41:58,597 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-10-17 10:41:58,597 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-10-17 10:41:58,597 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-10-17 10:41:58,597 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-10-17 10:41:58,598 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-10-17 10:41:58,598 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_a8626d63-3d2c-4c2d-9dca-4c0519d23aed/bin/uautomizer-J5u9QxTXDZ/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8626d63-3d2c-4c2d-9dca-4c0519d23aed/bin/uautomizer-J5u9QxTXDZ Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 672ab63d50f6d257836fb16bc257f69b3b166ee79333dc7cfe86a969c93c0f7f [2022-10-17 10:41:58,867 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-10-17 10:41:58,902 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-10-17 10:41:58,905 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-10-17 10:41:58,907 INFO L271 PluginConnector]: Initializing CDTParser... [2022-10-17 10:41:58,908 INFO L275 PluginConnector]: CDTParser initialized [2022-10-17 10:41:58,909 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8626d63-3d2c-4c2d-9dca-4c0519d23aed/bin/uautomizer-J5u9QxTXDZ/../../sv-benchmarks/c/weaver/chl-sre-trans.wvr.c [2022-10-17 10:41:58,987 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8626d63-3d2c-4c2d-9dca-4c0519d23aed/bin/uautomizer-J5u9QxTXDZ/data/2d09abce6/88e9ce7f5eab4a88bbeda961f2fbec8a/FLAG7bc157062 [2022-10-17 10:41:59,475 INFO L306 CDTParser]: Found 1 translation units. [2022-10-17 10:41:59,476 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8626d63-3d2c-4c2d-9dca-4c0519d23aed/sv-benchmarks/c/weaver/chl-sre-trans.wvr.c [2022-10-17 10:41:59,484 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8626d63-3d2c-4c2d-9dca-4c0519d23aed/bin/uautomizer-J5u9QxTXDZ/data/2d09abce6/88e9ce7f5eab4a88bbeda961f2fbec8a/FLAG7bc157062 [2022-10-17 10:41:59,838 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8626d63-3d2c-4c2d-9dca-4c0519d23aed/bin/uautomizer-J5u9QxTXDZ/data/2d09abce6/88e9ce7f5eab4a88bbeda961f2fbec8a [2022-10-17 10:41:59,841 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-10-17 10:41:59,843 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-10-17 10:41:59,846 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-10-17 10:41:59,847 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-10-17 10:41:59,850 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-10-17 10:41:59,850 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.10 10:41:59" (1/1) ... [2022-10-17 10:41:59,851 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2e8d3995 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:41:59, skipping insertion in model container [2022-10-17 10:41:59,852 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.10 10:41:59" (1/1) ... [2022-10-17 10:41:59,860 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-10-17 10:41:59,884 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-10-17 10:42:00,101 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8626d63-3d2c-4c2d-9dca-4c0519d23aed/sv-benchmarks/c/weaver/chl-sre-trans.wvr.c[2272,2285] [2022-10-17 10:42:00,104 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-17 10:42:00,113 INFO L203 MainTranslator]: Completed pre-run [2022-10-17 10:42:00,136 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8626d63-3d2c-4c2d-9dca-4c0519d23aed/sv-benchmarks/c/weaver/chl-sre-trans.wvr.c[2272,2285] [2022-10-17 10:42:00,137 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-17 10:42:00,152 INFO L208 MainTranslator]: Completed translation [2022-10-17 10:42:00,152 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:42:00 WrapperNode [2022-10-17 10:42:00,153 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-10-17 10:42:00,154 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-10-17 10:42:00,154 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-10-17 10:42:00,154 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-10-17 10:42:00,163 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:42:00" (1/1) ... [2022-10-17 10:42:00,171 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:42:00" (1/1) ... [2022-10-17 10:42:00,193 INFO L138 Inliner]: procedures = 22, calls = 25, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 70 [2022-10-17 10:42:00,194 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-10-17 10:42:00,195 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-10-17 10:42:00,195 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-10-17 10:42:00,195 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-10-17 10:42:00,205 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:42:00" (1/1) ... [2022-10-17 10:42:00,206 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:42:00" (1/1) ... [2022-10-17 10:42:00,208 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:42:00" (1/1) ... [2022-10-17 10:42:00,209 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:42:00" (1/1) ... [2022-10-17 10:42:00,214 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:42:00" (1/1) ... [2022-10-17 10:42:00,216 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:42:00" (1/1) ... [2022-10-17 10:42:00,218 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:42:00" (1/1) ... [2022-10-17 10:42:00,219 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:42:00" (1/1) ... [2022-10-17 10:42:00,222 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-10-17 10:42:00,223 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-10-17 10:42:00,223 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-10-17 10:42:00,223 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-10-17 10:42:00,225 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:42:00" (1/1) ... [2022-10-17 10:42:00,236 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-17 10:42:00,248 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8626d63-3d2c-4c2d-9dca-4c0519d23aed/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 10:42:00,275 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8626d63-3d2c-4c2d-9dca-4c0519d23aed/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-10-17 10:42:00,313 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8626d63-3d2c-4c2d-9dca-4c0519d23aed/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-10-17 10:42:00,335 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-10-17 10:42:00,335 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-10-17 10:42:00,335 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-10-17 10:42:00,335 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-10-17 10:42:00,336 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-10-17 10:42:00,336 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2022-10-17 10:42:00,336 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2022-10-17 10:42:00,341 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-10-17 10:42:00,342 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-10-17 10:42:00,342 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-10-17 10:42:00,342 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-10-17 10:42:00,342 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-10-17 10:42:00,342 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-10-17 10:42:00,342 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-10-17 10:42:00,344 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-10-17 10:42:00,476 INFO L235 CfgBuilder]: Building ICFG [2022-10-17 10:42:00,478 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-10-17 10:42:00,832 INFO L276 CfgBuilder]: Performing block encoding [2022-10-17 10:42:00,842 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-10-17 10:42:00,842 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-10-17 10:42:00,846 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.10 10:42:00 BoogieIcfgContainer [2022-10-17 10:42:00,846 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-10-17 10:42:00,849 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-10-17 10:42:00,849 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-10-17 10:42:00,853 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-10-17 10:42:00,853 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.10 10:41:59" (1/3) ... [2022-10-17 10:42:00,854 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4d268b6c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.10 10:42:00, skipping insertion in model container [2022-10-17 10:42:00,855 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:42:00" (2/3) ... [2022-10-17 10:42:00,855 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4d268b6c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.10 10:42:00, skipping insertion in model container [2022-10-17 10:42:00,855 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.10 10:42:00" (3/3) ... [2022-10-17 10:42:00,857 INFO L112 eAbstractionObserver]: Analyzing ICFG chl-sre-trans.wvr.c [2022-10-17 10:42:00,867 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-10-17 10:42:00,878 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-10-17 10:42:00,879 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-10-17 10:42:00,879 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-10-17 10:42:00,971 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2022-10-17 10:42:01,014 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 119 places, 116 transitions, 256 flow [2022-10-17 10:42:01,109 INFO L130 PetriNetUnfolder]: 7/113 cut-off events. [2022-10-17 10:42:01,109 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-10-17 10:42:01,114 INFO L83 FinitePrefix]: Finished finitePrefix Result has 126 conditions, 113 events. 7/113 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 113 event pairs, 0 based on Foata normal form. 0/105 useless extension candidates. Maximal degree in co-relation 72. Up to 2 conditions per place. [2022-10-17 10:42:01,114 INFO L82 GeneralOperation]: Start removeDead. Operand has 119 places, 116 transitions, 256 flow [2022-10-17 10:42:01,120 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 105 places, 102 transitions, 222 flow [2022-10-17 10:42:01,131 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-10-17 10:42:01,139 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;@6c03ddb5, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-10-17 10:42:01,140 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2022-10-17 10:42:01,201 INFO L130 PetriNetUnfolder]: 7/101 cut-off events. [2022-10-17 10:42:01,201 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-10-17 10:42:01,202 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-10-17 10:42:01,202 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:42:01,203 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-10-17 10:42:01,209 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:42:01,209 INFO L85 PathProgramCache]: Analyzing trace with hash -154722085, now seen corresponding path program 1 times [2022-10-17 10:42:01,219 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:42:01,220 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1572196880] [2022-10-17 10:42:01,221 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:42:01,221 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:42:01,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:42:02,139 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 10:42:02,140 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:42:02,140 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1572196880] [2022-10-17 10:42:02,141 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1572196880] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:42:02,141 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:42:02,142 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-10-17 10:42:02,143 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1786963022] [2022-10-17 10:42:02,144 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:42:02,160 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-10-17 10:42:02,160 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:42:02,204 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-10-17 10:42:02,208 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-10-17 10:42:02,219 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 94 out of 116 [2022-10-17 10:42:02,230 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 105 places, 102 transitions, 222 flow. Second operand has 6 states, 6 states have (on average 97.0) internal successors, (582), 6 states have internal predecessors, (582), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:42:02,231 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-10-17 10:42:02,231 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 94 of 116 [2022-10-17 10:42:02,232 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-10-17 10:42:02,520 INFO L130 PetriNetUnfolder]: 81/364 cut-off events. [2022-10-17 10:42:02,520 INFO L131 PetriNetUnfolder]: For 84/84 co-relation queries the response was YES. [2022-10-17 10:42:02,524 INFO L83 FinitePrefix]: Finished finitePrefix Result has 581 conditions, 364 events. 81/364 cut-off events. For 84/84 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 1766 event pairs, 30 based on Foata normal form. 2/349 useless extension candidates. Maximal degree in co-relation 466. Up to 91 conditions per place. [2022-10-17 10:42:02,528 INFO L137 encePairwiseOnDemand]: 104/116 looper letters, 25 selfloop transitions, 10 changer transitions 6/122 dead transitions. [2022-10-17 10:42:02,529 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 112 places, 122 transitions, 368 flow [2022-10-17 10:42:02,530 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-10-17 10:42:02,533 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-10-17 10:42:02,549 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 796 transitions. [2022-10-17 10:42:02,555 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8577586206896551 [2022-10-17 10:42:02,556 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 796 transitions. [2022-10-17 10:42:02,557 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 796 transitions. [2022-10-17 10:42:02,564 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-10-17 10:42:02,567 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 796 transitions. [2022-10-17 10:42:02,576 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 99.5) internal successors, (796), 8 states have internal predecessors, (796), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:42:02,591 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 116.0) internal successors, (1044), 9 states have internal predecessors, (1044), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:42:02,592 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 116.0) internal successors, (1044), 9 states have internal predecessors, (1044), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:42:02,593 INFO L175 Difference]: Start difference. First operand has 105 places, 102 transitions, 222 flow. Second operand 8 states and 796 transitions. [2022-10-17 10:42:02,594 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 112 places, 122 transitions, 368 flow [2022-10-17 10:42:02,600 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 106 places, 122 transitions, 340 flow, removed 0 selfloop flow, removed 6 redundant places. [2022-10-17 10:42:02,605 INFO L231 Difference]: Finished difference. Result has 111 places, 107 transitions, 272 flow [2022-10-17 10:42:02,607 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=116, PETRI_DIFFERENCE_MINUEND_FLOW=208, PETRI_DIFFERENCE_MINUEND_PLACES=99, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=101, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=94, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=272, PETRI_PLACES=111, PETRI_TRANSITIONS=107} [2022-10-17 10:42:02,616 INFO L287 CegarLoopForPetriNet]: 105 programPoint places, 6 predicate places. [2022-10-17 10:42:02,617 INFO L495 AbstractCegarLoop]: Abstraction has has 111 places, 107 transitions, 272 flow [2022-10-17 10:42:02,618 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 97.0) internal successors, (582), 6 states have internal predecessors, (582), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:42:02,618 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-10-17 10:42:02,618 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:42:02,619 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-10-17 10:42:02,620 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-10-17 10:42:02,621 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:42:02,621 INFO L85 PathProgramCache]: Analyzing trace with hash -1375195157, now seen corresponding path program 2 times [2022-10-17 10:42:02,622 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:42:02,622 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1688317584] [2022-10-17 10:42:02,623 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:42:02,623 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:42:02,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:42:03,037 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 10:42:03,038 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:42:03,038 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1688317584] [2022-10-17 10:42:03,039 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1688317584] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:42:03,039 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:42:03,039 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-10-17 10:42:03,039 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1522375546] [2022-10-17 10:42:03,040 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:42:03,041 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-10-17 10:42:03,041 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:42:03,042 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-10-17 10:42:03,042 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-10-17 10:42:03,044 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 98 out of 116 [2022-10-17 10:42:03,046 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 111 places, 107 transitions, 272 flow. Second operand has 6 states, 6 states have (on average 100.33333333333333) internal successors, (602), 6 states have internal predecessors, (602), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:42:03,046 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-10-17 10:42:03,046 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 98 of 116 [2022-10-17 10:42:03,046 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-10-17 10:42:03,249 INFO L130 PetriNetUnfolder]: 41/300 cut-off events. [2022-10-17 10:42:03,249 INFO L131 PetriNetUnfolder]: For 74/82 co-relation queries the response was YES. [2022-10-17 10:42:03,254 INFO L83 FinitePrefix]: Finished finitePrefix Result has 508 conditions, 300 events. 41/300 cut-off events. For 74/82 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 1425 event pairs, 12 based on Foata normal form. 2/284 useless extension candidates. Maximal degree in co-relation 495. Up to 39 conditions per place. [2022-10-17 10:42:03,257 INFO L137 encePairwiseOnDemand]: 109/116 looper letters, 18 selfloop transitions, 5 changer transitions 4/116 dead transitions. [2022-10-17 10:42:03,257 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 112 places, 116 transitions, 354 flow [2022-10-17 10:42:03,258 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-10-17 10:42:03,258 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-10-17 10:42:03,261 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 615 transitions. [2022-10-17 10:42:03,263 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8836206896551724 [2022-10-17 10:42:03,264 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 615 transitions. [2022-10-17 10:42:03,264 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 615 transitions. [2022-10-17 10:42:03,265 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-10-17 10:42:03,265 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 615 transitions. [2022-10-17 10:42:03,267 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 102.5) internal successors, (615), 6 states have internal predecessors, (615), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:42:03,270 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 116.0) internal successors, (812), 7 states have internal predecessors, (812), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:42:03,271 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 116.0) internal successors, (812), 7 states have internal predecessors, (812), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:42:03,271 INFO L175 Difference]: Start difference. First operand has 111 places, 107 transitions, 272 flow. Second operand 6 states and 615 transitions. [2022-10-17 10:42:03,272 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 112 places, 116 transitions, 354 flow [2022-10-17 10:42:03,278 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 110 places, 116 transitions, 348 flow, removed 3 selfloop flow, removed 2 redundant places. [2022-10-17 10:42:03,282 INFO L231 Difference]: Finished difference. Result has 113 places, 107 transitions, 289 flow [2022-10-17 10:42:03,283 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=116, PETRI_DIFFERENCE_MINUEND_FLOW=268, PETRI_DIFFERENCE_MINUEND_PLACES=105, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=107, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=102, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=289, PETRI_PLACES=113, PETRI_TRANSITIONS=107} [2022-10-17 10:42:03,284 INFO L287 CegarLoopForPetriNet]: 105 programPoint places, 8 predicate places. [2022-10-17 10:42:03,284 INFO L495 AbstractCegarLoop]: Abstraction has has 113 places, 107 transitions, 289 flow [2022-10-17 10:42:03,285 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 100.33333333333333) internal successors, (602), 6 states have internal predecessors, (602), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:42:03,285 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-10-17 10:42:03,286 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:42:03,287 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-10-17 10:42:03,287 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-10-17 10:42:03,289 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:42:03,289 INFO L85 PathProgramCache]: Analyzing trace with hash -1807013954, now seen corresponding path program 1 times [2022-10-17 10:42:03,289 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:42:03,290 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [842016838] [2022-10-17 10:42:03,290 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:42:03,291 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:42:03,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:42:03,606 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 10:42:03,607 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:42:03,607 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [842016838] [2022-10-17 10:42:03,608 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [842016838] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:42:03,608 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:42:03,609 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-10-17 10:42:03,609 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [286392643] [2022-10-17 10:42:03,610 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:42:03,610 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-10-17 10:42:03,611 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:42:03,611 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-10-17 10:42:03,612 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-10-17 10:42:03,615 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 94 out of 116 [2022-10-17 10:42:03,616 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 113 places, 107 transitions, 289 flow. Second operand has 7 states, 7 states have (on average 96.57142857142857) internal successors, (676), 7 states have internal predecessors, (676), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:42:03,616 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-10-17 10:42:03,617 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 94 of 116 [2022-10-17 10:42:03,617 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-10-17 10:42:03,860 INFO L130 PetriNetUnfolder]: 156/790 cut-off events. [2022-10-17 10:42:03,860 INFO L131 PetriNetUnfolder]: For 425/472 co-relation queries the response was YES. [2022-10-17 10:42:03,866 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1533 conditions, 790 events. 156/790 cut-off events. For 425/472 co-relation queries the response was YES. Maximal size of possible extension queue 59. Compared 5551 event pairs, 66 based on Foata normal form. 6/757 useless extension candidates. Maximal degree in co-relation 1518. Up to 110 conditions per place. [2022-10-17 10:42:03,870 INFO L137 encePairwiseOnDemand]: 109/116 looper letters, 34 selfloop transitions, 6 changer transitions 8/131 dead transitions. [2022-10-17 10:42:03,871 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 116 places, 131 transitions, 497 flow [2022-10-17 10:42:03,871 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-10-17 10:42:03,871 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-10-17 10:42:03,873 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 600 transitions. [2022-10-17 10:42:03,874 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8620689655172413 [2022-10-17 10:42:03,874 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 600 transitions. [2022-10-17 10:42:03,874 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 600 transitions. [2022-10-17 10:42:03,877 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-10-17 10:42:03,877 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 600 transitions. [2022-10-17 10:42:03,879 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 100.0) internal successors, (600), 6 states have internal predecessors, (600), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:42:03,882 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 116.0) internal successors, (812), 7 states have internal predecessors, (812), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:42:03,883 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 116.0) internal successors, (812), 7 states have internal predecessors, (812), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:42:03,883 INFO L175 Difference]: Start difference. First operand has 113 places, 107 transitions, 289 flow. Second operand 6 states and 600 transitions. [2022-10-17 10:42:03,883 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 116 places, 131 transitions, 497 flow [2022-10-17 10:42:03,893 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 111 places, 131 transitions, 468 flow, removed 6 selfloop flow, removed 5 redundant places. [2022-10-17 10:42:03,898 INFO L231 Difference]: Finished difference. Result has 115 places, 111 transitions, 325 flow [2022-10-17 10:42:03,898 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=116, PETRI_DIFFERENCE_MINUEND_FLOW=273, PETRI_DIFFERENCE_MINUEND_PLACES=106, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=107, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=101, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=325, PETRI_PLACES=115, PETRI_TRANSITIONS=111} [2022-10-17 10:42:03,901 INFO L287 CegarLoopForPetriNet]: 105 programPoint places, 10 predicate places. [2022-10-17 10:42:03,901 INFO L495 AbstractCegarLoop]: Abstraction has has 115 places, 111 transitions, 325 flow [2022-10-17 10:42:03,902 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 96.57142857142857) internal successors, (676), 7 states have internal predecessors, (676), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:42:03,902 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-10-17 10:42:03,903 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:42:03,903 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-10-17 10:42:03,903 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-10-17 10:42:03,905 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:42:03,905 INFO L85 PathProgramCache]: Analyzing trace with hash -392341713, now seen corresponding path program 1 times [2022-10-17 10:42:03,905 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:42:03,905 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [884575812] [2022-10-17 10:42:03,906 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:42:03,906 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:42:03,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:42:04,175 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 10:42:04,175 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:42:04,176 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [884575812] [2022-10-17 10:42:04,176 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [884575812] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:42:04,176 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:42:04,176 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-10-17 10:42:04,177 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [530535441] [2022-10-17 10:42:04,177 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:42:04,178 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-10-17 10:42:04,178 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:42:04,178 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-10-17 10:42:04,179 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-10-17 10:42:04,180 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 95 out of 116 [2022-10-17 10:42:04,182 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 115 places, 111 transitions, 325 flow. Second operand has 7 states, 7 states have (on average 97.28571428571429) internal successors, (681), 7 states have internal predecessors, (681), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:42:04,182 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-10-17 10:42:04,182 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 95 of 116 [2022-10-17 10:42:04,182 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-10-17 10:42:04,443 INFO L130 PetriNetUnfolder]: 79/503 cut-off events. [2022-10-17 10:42:04,443 INFO L131 PetriNetUnfolder]: For 238/381 co-relation queries the response was YES. [2022-10-17 10:42:04,447 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1016 conditions, 503 events. 79/503 cut-off events. For 238/381 co-relation queries the response was YES. Maximal size of possible extension queue 40. Compared 3206 event pairs, 33 based on Foata normal form. 24/497 useless extension candidates. Maximal degree in co-relation 1000. Up to 116 conditions per place. [2022-10-17 10:42:04,449 INFO L137 encePairwiseOnDemand]: 108/116 looper letters, 32 selfloop transitions, 7 changer transitions 9/133 dead transitions. [2022-10-17 10:42:04,450 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 121 places, 133 transitions, 503 flow [2022-10-17 10:42:04,450 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-10-17 10:42:04,450 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-10-17 10:42:04,453 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 894 transitions. [2022-10-17 10:42:04,454 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8563218390804598 [2022-10-17 10:42:04,454 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 894 transitions. [2022-10-17 10:42:04,455 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 894 transitions. [2022-10-17 10:42:04,456 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-10-17 10:42:04,456 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 894 transitions. [2022-10-17 10:42:04,460 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 99.33333333333333) internal successors, (894), 9 states have internal predecessors, (894), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:42:04,463 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 116.0) internal successors, (1160), 10 states have internal predecessors, (1160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:42:04,464 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 116.0) internal successors, (1160), 10 states have internal predecessors, (1160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:42:04,464 INFO L175 Difference]: Start difference. First operand has 115 places, 111 transitions, 325 flow. Second operand 9 states and 894 transitions. [2022-10-17 10:42:04,465 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 121 places, 133 transitions, 503 flow [2022-10-17 10:42:04,468 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 118 places, 133 transitions, 490 flow, removed 3 selfloop flow, removed 3 redundant places. [2022-10-17 10:42:04,471 INFO L231 Difference]: Finished difference. Result has 125 places, 115 transitions, 382 flow [2022-10-17 10:42:04,472 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=116, PETRI_DIFFERENCE_MINUEND_FLOW=317, PETRI_DIFFERENCE_MINUEND_PLACES=110, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=111, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=104, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=382, PETRI_PLACES=125, PETRI_TRANSITIONS=115} [2022-10-17 10:42:04,473 INFO L287 CegarLoopForPetriNet]: 105 programPoint places, 20 predicate places. [2022-10-17 10:42:04,473 INFO L495 AbstractCegarLoop]: Abstraction has has 125 places, 115 transitions, 382 flow [2022-10-17 10:42:04,474 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 97.28571428571429) internal successors, (681), 7 states have internal predecessors, (681), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:42:04,474 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-10-17 10:42:04,474 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:42:04,474 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-10-17 10:42:04,475 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-10-17 10:42:04,475 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:42:04,475 INFO L85 PathProgramCache]: Analyzing trace with hash 1635729045, now seen corresponding path program 1 times [2022-10-17 10:42:04,475 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:42:04,476 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1548851910] [2022-10-17 10:42:04,476 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:42:04,476 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:42:04,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:42:04,753 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 10:42:04,753 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:42:04,753 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1548851910] [2022-10-17 10:42:04,754 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1548851910] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:42:04,754 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:42:04,754 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-10-17 10:42:04,754 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1534283497] [2022-10-17 10:42:04,754 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:42:04,755 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-10-17 10:42:04,755 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:42:04,756 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-10-17 10:42:04,756 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-10-17 10:42:04,757 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 90 out of 116 [2022-10-17 10:42:04,758 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 125 places, 115 transitions, 382 flow. Second operand has 5 states, 5 states have (on average 93.4) internal successors, (467), 5 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:42:04,758 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-10-17 10:42:04,758 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 90 of 116 [2022-10-17 10:42:04,758 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-10-17 10:42:05,633 INFO L130 PetriNetUnfolder]: 661/3509 cut-off events. [2022-10-17 10:42:05,633 INFO L131 PetriNetUnfolder]: For 1296/1435 co-relation queries the response was YES. [2022-10-17 10:42:05,655 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6333 conditions, 3509 events. 661/3509 cut-off events. For 1296/1435 co-relation queries the response was YES. Maximal size of possible extension queue 256. Compared 37706 event pairs, 149 based on Foata normal form. 50/3090 useless extension candidates. Maximal degree in co-relation 6305. Up to 448 conditions per place. [2022-10-17 10:42:05,664 INFO L137 encePairwiseOnDemand]: 102/116 looper letters, 46 selfloop transitions, 16 changer transitions 34/169 dead transitions. [2022-10-17 10:42:05,664 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 128 places, 169 transitions, 662 flow [2022-10-17 10:42:05,665 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-10-17 10:42:05,665 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-10-17 10:42:05,667 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 620 transitions. [2022-10-17 10:42:05,668 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8908045977011494 [2022-10-17 10:42:05,668 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 620 transitions. [2022-10-17 10:42:05,668 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 620 transitions. [2022-10-17 10:42:05,669 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-10-17 10:42:05,669 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 620 transitions. [2022-10-17 10:42:05,673 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 103.33333333333333) internal successors, (620), 6 states have internal predecessors, (620), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:42:05,676 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 116.0) internal successors, (812), 7 states have internal predecessors, (812), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:42:05,676 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 116.0) internal successors, (812), 7 states have internal predecessors, (812), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:42:05,677 INFO L175 Difference]: Start difference. First operand has 125 places, 115 transitions, 382 flow. Second operand 6 states and 620 transitions. [2022-10-17 10:42:05,677 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 128 places, 169 transitions, 662 flow [2022-10-17 10:42:05,702 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 125 places, 169 transitions, 655 flow, removed 3 selfloop flow, removed 3 redundant places. [2022-10-17 10:42:05,706 INFO L231 Difference]: Finished difference. Result has 130 places, 111 transitions, 370 flow [2022-10-17 10:42:05,706 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=116, PETRI_DIFFERENCE_MINUEND_FLOW=375, PETRI_DIFFERENCE_MINUEND_PLACES=120, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=115, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=106, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=370, PETRI_PLACES=130, PETRI_TRANSITIONS=111} [2022-10-17 10:42:05,709 INFO L287 CegarLoopForPetriNet]: 105 programPoint places, 25 predicate places. [2022-10-17 10:42:05,710 INFO L495 AbstractCegarLoop]: Abstraction has has 130 places, 111 transitions, 370 flow [2022-10-17 10:42:05,710 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 93.4) internal successors, (467), 5 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:42:05,710 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-10-17 10:42:05,710 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:42:05,711 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-10-17 10:42:05,711 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-10-17 10:42:05,712 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:42:05,712 INFO L85 PathProgramCache]: Analyzing trace with hash 60688389, now seen corresponding path program 2 times [2022-10-17 10:42:05,713 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:42:05,713 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2058089100] [2022-10-17 10:42:05,713 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:42:05,713 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:42:05,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:42:06,151 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 10:42:06,152 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:42:06,152 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2058089100] [2022-10-17 10:42:06,152 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2058089100] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:42:06,153 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:42:06,153 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-10-17 10:42:06,154 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [586568025] [2022-10-17 10:42:06,154 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:42:06,155 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-10-17 10:42:06,155 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:42:06,156 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-10-17 10:42:06,156 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2022-10-17 10:42:06,157 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 90 out of 116 [2022-10-17 10:42:06,159 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 130 places, 111 transitions, 370 flow. Second operand has 6 states, 6 states have (on average 92.83333333333333) internal successors, (557), 6 states have internal predecessors, (557), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:42:06,159 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-10-17 10:42:06,160 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 90 of 116 [2022-10-17 10:42:06,160 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-10-17 10:42:06,617 INFO L130 PetriNetUnfolder]: 339/1440 cut-off events. [2022-10-17 10:42:06,618 INFO L131 PetriNetUnfolder]: For 994/1036 co-relation queries the response was YES. [2022-10-17 10:42:06,628 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3291 conditions, 1440 events. 339/1440 cut-off events. For 994/1036 co-relation queries the response was YES. Maximal size of possible extension queue 109. Compared 11930 event pairs, 96 based on Foata normal form. 31/1402 useless extension candidates. Maximal degree in co-relation 3243. Up to 182 conditions per place. [2022-10-17 10:42:06,635 INFO L137 encePairwiseOnDemand]: 106/116 looper letters, 69 selfloop transitions, 10 changer transitions 3/155 dead transitions. [2022-10-17 10:42:06,636 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 126 places, 155 transitions, 748 flow [2022-10-17 10:42:06,636 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-10-17 10:42:06,636 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-10-17 10:42:06,638 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 506 transitions. [2022-10-17 10:42:06,639 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8724137931034482 [2022-10-17 10:42:06,639 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 506 transitions. [2022-10-17 10:42:06,639 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 506 transitions. [2022-10-17 10:42:06,640 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-10-17 10:42:06,640 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 506 transitions. [2022-10-17 10:42:06,642 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 101.2) internal successors, (506), 5 states have internal predecessors, (506), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:42:06,644 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 116.0) internal successors, (696), 6 states have internal predecessors, (696), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:42:06,645 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 116.0) internal successors, (696), 6 states have internal predecessors, (696), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:42:06,645 INFO L175 Difference]: Start difference. First operand has 130 places, 111 transitions, 370 flow. Second operand 5 states and 506 transitions. [2022-10-17 10:42:06,645 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 126 places, 155 transitions, 748 flow [2022-10-17 10:42:06,655 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 113 places, 155 transitions, 712 flow, removed 12 selfloop flow, removed 13 redundant places. [2022-10-17 10:42:06,658 INFO L231 Difference]: Finished difference. Result has 115 places, 114 transitions, 399 flow [2022-10-17 10:42:06,659 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=116, PETRI_DIFFERENCE_MINUEND_FLOW=334, PETRI_DIFFERENCE_MINUEND_PLACES=109, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=111, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=101, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=399, PETRI_PLACES=115, PETRI_TRANSITIONS=114} [2022-10-17 10:42:06,662 INFO L287 CegarLoopForPetriNet]: 105 programPoint places, 10 predicate places. [2022-10-17 10:42:06,663 INFO L495 AbstractCegarLoop]: Abstraction has has 115 places, 114 transitions, 399 flow [2022-10-17 10:42:06,663 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 92.83333333333333) internal successors, (557), 6 states have internal predecessors, (557), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:42:06,663 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-10-17 10:42:06,664 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:42:06,664 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-10-17 10:42:06,664 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-10-17 10:42:06,665 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:42:06,665 INFO L85 PathProgramCache]: Analyzing trace with hash -221220277, now seen corresponding path program 3 times [2022-10-17 10:42:06,665 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:42:06,666 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [278696397] [2022-10-17 10:42:06,666 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:42:06,666 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:42:06,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:42:06,905 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 10:42:06,906 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:42:06,906 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [278696397] [2022-10-17 10:42:06,908 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [278696397] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:42:06,908 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:42:06,908 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-10-17 10:42:06,913 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1699318535] [2022-10-17 10:42:06,913 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:42:06,914 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-10-17 10:42:06,914 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:42:06,914 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-10-17 10:42:06,915 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-10-17 10:42:06,918 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 92 out of 116 [2022-10-17 10:42:06,919 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 115 places, 114 transitions, 399 flow. Second operand has 4 states, 4 states have (on average 95.75) internal successors, (383), 4 states have internal predecessors, (383), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:42:06,919 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-10-17 10:42:06,919 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 92 of 116 [2022-10-17 10:42:06,919 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-10-17 10:42:07,198 INFO L130 PetriNetUnfolder]: 268/1310 cut-off events. [2022-10-17 10:42:07,198 INFO L131 PetriNetUnfolder]: For 1017/1017 co-relation queries the response was YES. [2022-10-17 10:42:07,204 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2791 conditions, 1310 events. 268/1310 cut-off events. For 1017/1017 co-relation queries the response was YES. Maximal size of possible extension queue 91. Compared 10930 event pairs, 99 based on Foata normal form. 15/1265 useless extension candidates. Maximal degree in co-relation 1879. Up to 201 conditions per place. [2022-10-17 10:42:07,210 INFO L137 encePairwiseOnDemand]: 108/116 looper letters, 47 selfloop transitions, 18 changer transitions 4/144 dead transitions. [2022-10-17 10:42:07,210 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 118 places, 144 transitions, 718 flow [2022-10-17 10:42:07,211 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-10-17 10:42:07,212 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-10-17 10:42:07,213 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 414 transitions. [2022-10-17 10:42:07,214 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8922413793103449 [2022-10-17 10:42:07,214 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 414 transitions. [2022-10-17 10:42:07,214 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 414 transitions. [2022-10-17 10:42:07,214 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-10-17 10:42:07,215 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 414 transitions. [2022-10-17 10:42:07,216 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 103.5) internal successors, (414), 4 states have internal predecessors, (414), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:42:07,217 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 116.0) internal successors, (580), 5 states have internal predecessors, (580), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:42:07,218 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 116.0) internal successors, (580), 5 states have internal predecessors, (580), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:42:07,218 INFO L175 Difference]: Start difference. First operand has 115 places, 114 transitions, 399 flow. Second operand 4 states and 414 transitions. [2022-10-17 10:42:07,218 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 118 places, 144 transitions, 718 flow [2022-10-17 10:42:07,221 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 116 places, 144 transitions, 706 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-10-17 10:42:07,225 INFO L231 Difference]: Finished difference. Result has 119 places, 123 transitions, 542 flow [2022-10-17 10:42:07,226 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=116, PETRI_DIFFERENCE_MINUEND_FLOW=382, PETRI_DIFFERENCE_MINUEND_PLACES=113, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=113, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=98, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=542, PETRI_PLACES=119, PETRI_TRANSITIONS=123} [2022-10-17 10:42:07,226 INFO L287 CegarLoopForPetriNet]: 105 programPoint places, 14 predicate places. [2022-10-17 10:42:07,227 INFO L495 AbstractCegarLoop]: Abstraction has has 119 places, 123 transitions, 542 flow [2022-10-17 10:42:07,227 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 95.75) internal successors, (383), 4 states have internal predecessors, (383), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:42:07,227 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-10-17 10:42:07,227 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:42:07,227 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-10-17 10:42:07,228 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-10-17 10:42:07,228 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:42:07,228 INFO L85 PathProgramCache]: Analyzing trace with hash -1055370329, now seen corresponding path program 1 times [2022-10-17 10:42:07,228 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:42:07,229 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1405683150] [2022-10-17 10:42:07,229 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:42:07,229 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:42:07,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:42:07,411 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 10:42:07,411 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:42:07,411 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1405683150] [2022-10-17 10:42:07,411 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1405683150] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:42:07,412 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:42:07,412 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-10-17 10:42:07,412 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [942731707] [2022-10-17 10:42:07,412 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:42:07,413 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-10-17 10:42:07,413 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:42:07,413 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-10-17 10:42:07,413 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-10-17 10:42:07,415 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 95 out of 116 [2022-10-17 10:42:07,416 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 119 places, 123 transitions, 542 flow. Second operand has 7 states, 7 states have (on average 97.28571428571429) internal successors, (681), 7 states have internal predecessors, (681), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:42:07,416 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-10-17 10:42:07,416 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 95 of 116 [2022-10-17 10:42:07,416 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-10-17 10:42:07,676 INFO L130 PetriNetUnfolder]: 143/820 cut-off events. [2022-10-17 10:42:07,676 INFO L131 PetriNetUnfolder]: For 648/894 co-relation queries the response was YES. [2022-10-17 10:42:07,682 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1648 conditions, 820 events. 143/820 cut-off events. For 648/894 co-relation queries the response was YES. Maximal size of possible extension queue 70. Compared 6520 event pairs, 60 based on Foata normal form. 6/755 useless extension candidates. Maximal degree in co-relation 1115. Up to 129 conditions per place. [2022-10-17 10:42:07,685 INFO L137 encePairwiseOnDemand]: 108/116 looper letters, 21 selfloop transitions, 5 changer transitions 23/142 dead transitions. [2022-10-17 10:42:07,685 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 127 places, 142 transitions, 664 flow [2022-10-17 10:42:07,686 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-10-17 10:42:07,686 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-10-17 10:42:07,688 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 892 transitions. [2022-10-17 10:42:07,689 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8544061302681992 [2022-10-17 10:42:07,690 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 892 transitions. [2022-10-17 10:42:07,690 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 892 transitions. [2022-10-17 10:42:07,691 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-10-17 10:42:07,691 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 892 transitions. [2022-10-17 10:42:07,694 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 99.11111111111111) internal successors, (892), 9 states have internal predecessors, (892), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:42:07,698 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 116.0) internal successors, (1160), 10 states have internal predecessors, (1160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:42:07,699 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 116.0) internal successors, (1160), 10 states have internal predecessors, (1160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:42:07,699 INFO L175 Difference]: Start difference. First operand has 119 places, 123 transitions, 542 flow. Second operand 9 states and 892 transitions. [2022-10-17 10:42:07,699 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 127 places, 142 transitions, 664 flow [2022-10-17 10:42:07,704 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 127 places, 142 transitions, 654 flow, removed 5 selfloop flow, removed 0 redundant places. [2022-10-17 10:42:07,707 INFO L231 Difference]: Finished difference. Result has 134 places, 114 transitions, 447 flow [2022-10-17 10:42:07,707 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=116, PETRI_DIFFERENCE_MINUEND_FLOW=532, PETRI_DIFFERENCE_MINUEND_PLACES=119, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=123, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=118, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=447, PETRI_PLACES=134, PETRI_TRANSITIONS=114} [2022-10-17 10:42:07,708 INFO L287 CegarLoopForPetriNet]: 105 programPoint places, 29 predicate places. [2022-10-17 10:42:07,708 INFO L495 AbstractCegarLoop]: Abstraction has has 134 places, 114 transitions, 447 flow [2022-10-17 10:42:07,709 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 97.28571428571429) internal successors, (681), 7 states have internal predecessors, (681), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:42:07,709 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-10-17 10:42:07,709 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:42:07,709 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-10-17 10:42:07,709 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-10-17 10:42:07,710 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:42:07,710 INFO L85 PathProgramCache]: Analyzing trace with hash 185078007, now seen corresponding path program 4 times [2022-10-17 10:42:07,710 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:42:07,710 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1061110126] [2022-10-17 10:42:07,711 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:42:07,711 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:42:07,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:42:07,863 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 10:42:07,863 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:42:07,863 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1061110126] [2022-10-17 10:42:07,863 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1061110126] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:42:07,864 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:42:07,864 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-10-17 10:42:07,864 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1996537902] [2022-10-17 10:42:07,864 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:42:07,865 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-10-17 10:42:07,865 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:42:07,865 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-10-17 10:42:07,865 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-10-17 10:42:07,866 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 92 out of 116 [2022-10-17 10:42:07,867 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 134 places, 114 transitions, 447 flow. Second operand has 4 states, 4 states have (on average 95.75) internal successors, (383), 4 states have internal predecessors, (383), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:42:07,867 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-10-17 10:42:07,867 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 92 of 116 [2022-10-17 10:42:07,867 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-10-17 10:42:08,083 INFO L130 PetriNetUnfolder]: 155/982 cut-off events. [2022-10-17 10:42:08,083 INFO L131 PetriNetUnfolder]: For 1084/1084 co-relation queries the response was YES. [2022-10-17 10:42:08,089 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2264 conditions, 982 events. 155/982 cut-off events. For 1084/1084 co-relation queries the response was YES. Maximal size of possible extension queue 76. Compared 8114 event pairs, 47 based on Foata normal form. 26/977 useless extension candidates. Maximal degree in co-relation 2243. Up to 161 conditions per place. [2022-10-17 10:42:08,091 INFO L137 encePairwiseOnDemand]: 109/116 looper letters, 0 selfloop transitions, 0 changer transitions 129/129 dead transitions. [2022-10-17 10:42:08,091 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 127 places, 129 transitions, 674 flow [2022-10-17 10:42:08,092 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-10-17 10:42:08,092 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-10-17 10:42:08,093 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 410 transitions. [2022-10-17 10:42:08,094 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8836206896551724 [2022-10-17 10:42:08,094 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 410 transitions. [2022-10-17 10:42:08,094 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 410 transitions. [2022-10-17 10:42:08,095 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-10-17 10:42:08,095 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 410 transitions. [2022-10-17 10:42:08,097 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 102.5) internal successors, (410), 4 states have internal predecessors, (410), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:42:08,098 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 116.0) internal successors, (580), 5 states have internal predecessors, (580), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:42:08,099 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 116.0) internal successors, (580), 5 states have internal predecessors, (580), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:42:08,099 INFO L175 Difference]: Start difference. First operand has 134 places, 114 transitions, 447 flow. Second operand 4 states and 410 transitions. [2022-10-17 10:42:08,099 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 127 places, 129 transitions, 674 flow [2022-10-17 10:42:08,106 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 124 places, 129 transitions, 654 flow, removed 9 selfloop flow, removed 3 redundant places. [2022-10-17 10:42:08,108 INFO L231 Difference]: Finished difference. Result has 124 places, 0 transitions, 0 flow [2022-10-17 10:42:08,109 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=116, PETRI_DIFFERENCE_MINUEND_FLOW=415, PETRI_DIFFERENCE_MINUEND_PLACES=121, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=108, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=108, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=0, PETRI_PLACES=124, PETRI_TRANSITIONS=0} [2022-10-17 10:42:08,109 INFO L287 CegarLoopForPetriNet]: 105 programPoint places, 19 predicate places. [2022-10-17 10:42:08,110 INFO L495 AbstractCegarLoop]: Abstraction has has 124 places, 0 transitions, 0 flow [2022-10-17 10:42:08,110 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 95.75) internal successors, (383), 4 states have internal predecessors, (383), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:42:08,113 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (3 of 4 remaining) [2022-10-17 10:42:08,113 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 4 remaining) [2022-10-17 10:42:08,114 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 4 remaining) [2022-10-17 10:42:08,114 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 4 remaining) [2022-10-17 10:42:08,114 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-10-17 10:42:08,115 INFO L444 BasicCegarLoop]: Path program histogram: [4, 2, 1, 1, 1] [2022-10-17 10:42:08,118 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-10-17 10:42:08,118 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-10-17 10:42:08,124 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 17.10 10:42:08 BasicIcfg [2022-10-17 10:42:08,124 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-10-17 10:42:08,125 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-10-17 10:42:08,125 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-10-17 10:42:08,125 INFO L275 PluginConnector]: Witness Printer initialized [2022-10-17 10:42:08,125 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.10 10:42:00" (3/4) ... [2022-10-17 10:42:08,128 INFO L137 WitnessPrinter]: Generating witness for correct program [2022-10-17 10:42:08,136 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure thread1 [2022-10-17 10:42:08,136 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure thread2 [2022-10-17 10:42:08,136 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure thread3 [2022-10-17 10:42:08,141 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 19 nodes and edges [2022-10-17 10:42:08,141 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2022-10-17 10:42:08,141 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2022-10-17 10:42:08,142 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2022-10-17 10:42:08,178 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8626d63-3d2c-4c2d-9dca-4c0519d23aed/bin/uautomizer-J5u9QxTXDZ/witness.graphml [2022-10-17 10:42:08,178 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-10-17 10:42:08,179 INFO L158 Benchmark]: Toolchain (without parser) took 8336.44ms. Allocated memory was 109.1MB in the beginning and 283.1MB in the end (delta: 174.1MB). Free memory was 72.8MB in the beginning and 176.1MB in the end (delta: -103.3MB). Peak memory consumption was 70.3MB. Max. memory is 16.1GB. [2022-10-17 10:42:08,179 INFO L158 Benchmark]: CDTParser took 0.30ms. Allocated memory is still 109.1MB. Free memory was 78.4MB in the beginning and 78.4MB in the end (delta: 29.7kB). There was no memory consumed. Max. memory is 16.1GB. [2022-10-17 10:42:08,180 INFO L158 Benchmark]: CACSL2BoogieTranslator took 306.57ms. Allocated memory is still 109.1MB. Free memory was 72.5MB in the beginning and 82.3MB in the end (delta: -9.7MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2022-10-17 10:42:08,180 INFO L158 Benchmark]: Boogie Procedure Inliner took 40.74ms. Allocated memory is still 109.1MB. Free memory was 82.3MB in the beginning and 80.5MB in the end (delta: 1.8MB). There was no memory consumed. Max. memory is 16.1GB. [2022-10-17 10:42:08,181 INFO L158 Benchmark]: Boogie Preprocessor took 27.23ms. Allocated memory is still 109.1MB. Free memory was 80.5MB in the beginning and 79.3MB in the end (delta: 1.2MB). There was no memory consumed. Max. memory is 16.1GB. [2022-10-17 10:42:08,181 INFO L158 Benchmark]: RCFGBuilder took 623.12ms. Allocated memory is still 109.1MB. Free memory was 79.3MB in the beginning and 65.5MB in the end (delta: 13.8MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2022-10-17 10:42:08,182 INFO L158 Benchmark]: TraceAbstraction took 7275.35ms. Allocated memory was 109.1MB in the beginning and 283.1MB in the end (delta: 174.1MB). Free memory was 64.7MB in the beginning and 178.2MB in the end (delta: -113.5MB). Peak memory consumption was 62.6MB. Max. memory is 16.1GB. [2022-10-17 10:42:08,182 INFO L158 Benchmark]: Witness Printer took 53.67ms. Allocated memory is still 283.1MB. Free memory was 178.2MB in the beginning and 176.1MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-10-17 10:42:08,184 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.30ms. Allocated memory is still 109.1MB. Free memory was 78.4MB in the beginning and 78.4MB in the end (delta: 29.7kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 306.57ms. Allocated memory is still 109.1MB. Free memory was 72.5MB in the beginning and 82.3MB in the end (delta: -9.7MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 40.74ms. Allocated memory is still 109.1MB. Free memory was 82.3MB in the beginning and 80.5MB in the end (delta: 1.8MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 27.23ms. Allocated memory is still 109.1MB. Free memory was 80.5MB in the beginning and 79.3MB in the end (delta: 1.2MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 623.12ms. Allocated memory is still 109.1MB. Free memory was 79.3MB in the beginning and 65.5MB in the end (delta: 13.8MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * TraceAbstraction took 7275.35ms. Allocated memory was 109.1MB in the beginning and 283.1MB in the end (delta: 174.1MB). Free memory was 64.7MB in the beginning and 178.2MB in the end (delta: -113.5MB). Peak memory consumption was 62.6MB. Max. memory is 16.1GB. * Witness Printer took 53.67ms. Allocated memory is still 283.1MB. Free memory was 178.2MB in the beginning and 176.1MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 76]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 7 procedures, 149 locations, 4 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.1s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 7.1s, OverallIterations: 9, TraceHistogramMax: 1, PathProgramHistogramMax: 4, EmptinessCheckTime: 0.0s, AutomataDifference: 3.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 204 SdHoareTripleChecker+Valid, 0.8s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 204 mSDsluCounter, 347 SdHoareTripleChecker+Invalid, 0.6s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 470 mSDsCounter, 37 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 693 IncrementalHoareTripleChecker+Invalid, 730 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 37 mSolverCounterUnsat, 126 mSDtfsCounter, 693 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 85 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=542occurred in iteration=7, InterpolantAutomatonStates: 57, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 2.5s InterpolantComputationTime, 764 NumberOfCodeBlocks, 764 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 755 ConstructedInterpolants, 0 QuantifiedInterpolants, 2344 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 9 InterpolantComputations, 9 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2022-10-17 10:42:08,230 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8626d63-3d2c-4c2d-9dca-4c0519d23aed/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE