./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/pthread-wmm/safe004_power.opt_pso.opt_rmo.opt.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 63182f13 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73ac7e77-2e24-4a6c-8d04-4d78906280fd/bin/uautomizer-YU5uOKAj3y/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73ac7e77-2e24-4a6c-8d04-4d78906280fd/bin/uautomizer-YU5uOKAj3y/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73ac7e77-2e24-4a6c-8d04-4d78906280fd/bin/uautomizer-YU5uOKAj3y/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73ac7e77-2e24-4a6c-8d04-4d78906280fd/bin/uautomizer-YU5uOKAj3y/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread-wmm/safe004_power.opt_pso.opt_rmo.opt.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73ac7e77-2e24-4a6c-8d04-4d78906280fd/bin/uautomizer-YU5uOKAj3y/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73ac7e77-2e24-4a6c-8d04-4d78906280fd/bin/uautomizer-YU5uOKAj3y --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 ad7a565ad4ebe037ce541fa36cdf85746d072cc2b5132ab8ae2e3025ff70fea5 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-63182f1 [2021-11-13 18:06:09,397 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-13 18:06:09,400 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-13 18:06:09,442 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-13 18:06:09,443 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-13 18:06:09,444 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-13 18:06:09,446 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-13 18:06:09,448 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-13 18:06:09,451 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-13 18:06:09,452 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-13 18:06:09,453 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-13 18:06:09,455 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-13 18:06:09,456 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-13 18:06:09,457 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-13 18:06:09,459 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-13 18:06:09,460 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-13 18:06:09,462 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-13 18:06:09,463 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-13 18:06:09,465 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-13 18:06:09,468 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-13 18:06:09,470 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-13 18:06:09,472 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-13 18:06:09,473 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-13 18:06:09,475 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-13 18:06:09,479 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-13 18:06:09,479 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-13 18:06:09,480 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-13 18:06:09,481 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-13 18:06:09,482 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-13 18:06:09,483 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-13 18:06:09,483 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-13 18:06:09,484 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-13 18:06:09,485 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-13 18:06:09,487 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-13 18:06:09,488 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-13 18:06:09,488 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-13 18:06:09,489 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-13 18:06:09,489 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-13 18:06:09,489 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-13 18:06:09,491 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-13 18:06:09,491 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-13 18:06:09,492 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73ac7e77-2e24-4a6c-8d04-4d78906280fd/bin/uautomizer-YU5uOKAj3y/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-11-13 18:06:09,517 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-13 18:06:09,518 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-13 18:06:09,518 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-13 18:06:09,518 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-13 18:06:09,519 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-13 18:06:09,519 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-13 18:06:09,520 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-13 18:06:09,520 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-13 18:06:09,520 INFO L138 SettingsManager]: * Use SBE=true [2021-11-13 18:06:09,521 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-13 18:06:09,521 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-13 18:06:09,521 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-13 18:06:09,521 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-13 18:06:09,522 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-13 18:06:09,522 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-13 18:06:09,522 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-13 18:06:09,522 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-13 18:06:09,522 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-13 18:06:09,523 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-13 18:06:09,523 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-13 18:06:09,523 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-13 18:06:09,523 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-13 18:06:09,524 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-13 18:06:09,524 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-13 18:06:09,524 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-13 18:06:09,524 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-13 18:06:09,525 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-13 18:06:09,525 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-13 18:06:09,525 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-13 18:06:09,525 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-13 18:06:09,525 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-13 18:06:09,526 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-13 18:06:09,526 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-13 18:06:09,526 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-13 18:06:09,526 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_73ac7e77-2e24-4a6c-8d04-4d78906280fd/bin/uautomizer-YU5uOKAj3y/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73ac7e77-2e24-4a6c-8d04-4d78906280fd/bin/uautomizer-YU5uOKAj3y Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ad7a565ad4ebe037ce541fa36cdf85746d072cc2b5132ab8ae2e3025ff70fea5 [2021-11-13 18:06:09,796 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-13 18:06:09,824 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-13 18:06:09,827 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-13 18:06:09,829 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-13 18:06:09,830 INFO L275 PluginConnector]: CDTParser initialized [2021-11-13 18:06:09,832 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73ac7e77-2e24-4a6c-8d04-4d78906280fd/bin/uautomizer-YU5uOKAj3y/../../sv-benchmarks/c/pthread-wmm/safe004_power.opt_pso.opt_rmo.opt.i [2021-11-13 18:06:09,940 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73ac7e77-2e24-4a6c-8d04-4d78906280fd/bin/uautomizer-YU5uOKAj3y/data/71683e0af/720484ef087c440ca4fe3ebf23df8278/FLAGfa546e28f [2021-11-13 18:06:10,516 INFO L306 CDTParser]: Found 1 translation units. [2021-11-13 18:06:10,516 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73ac7e77-2e24-4a6c-8d04-4d78906280fd/sv-benchmarks/c/pthread-wmm/safe004_power.opt_pso.opt_rmo.opt.i [2021-11-13 18:06:10,541 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73ac7e77-2e24-4a6c-8d04-4d78906280fd/bin/uautomizer-YU5uOKAj3y/data/71683e0af/720484ef087c440ca4fe3ebf23df8278/FLAGfa546e28f [2021-11-13 18:06:10,806 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73ac7e77-2e24-4a6c-8d04-4d78906280fd/bin/uautomizer-YU5uOKAj3y/data/71683e0af/720484ef087c440ca4fe3ebf23df8278 [2021-11-13 18:06:10,809 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-13 18:06:10,810 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-13 18:06:10,831 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-13 18:06:10,832 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-13 18:06:10,836 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-13 18:06:10,837 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 06:06:10" (1/1) ... [2021-11-13 18:06:10,838 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1a9e2b45 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:06:10, skipping insertion in model container [2021-11-13 18:06:10,838 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 06:06:10" (1/1) ... [2021-11-13 18:06:10,846 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-13 18:06:10,911 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-13 18:06:11,138 WARN L228 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_73ac7e77-2e24-4a6c-8d04-4d78906280fd/sv-benchmarks/c/pthread-wmm/safe004_power.opt_pso.opt_rmo.opt.i[967,980] [2021-11-13 18:06:11,435 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-13 18:06:11,446 INFO L203 MainTranslator]: Completed pre-run [2021-11-13 18:06:11,461 WARN L228 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_73ac7e77-2e24-4a6c-8d04-4d78906280fd/sv-benchmarks/c/pthread-wmm/safe004_power.opt_pso.opt_rmo.opt.i[967,980] [2021-11-13 18:06:11,561 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-13 18:06:11,627 INFO L208 MainTranslator]: Completed translation [2021-11-13 18:06:11,628 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:06:11 WrapperNode [2021-11-13 18:06:11,629 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-13 18:06:11,630 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-13 18:06:11,630 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-13 18:06:11,630 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-13 18:06:11,639 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:06:11" (1/1) ... [2021-11-13 18:06:11,680 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:06:11" (1/1) ... [2021-11-13 18:06:11,742 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-13 18:06:11,747 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-13 18:06:11,747 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-13 18:06:11,747 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-13 18:06:11,757 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:06:11" (1/1) ... [2021-11-13 18:06:11,758 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:06:11" (1/1) ... [2021-11-13 18:06:11,786 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:06:11" (1/1) ... [2021-11-13 18:06:11,786 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:06:11" (1/1) ... [2021-11-13 18:06:11,798 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:06:11" (1/1) ... [2021-11-13 18:06:11,802 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:06:11" (1/1) ... [2021-11-13 18:06:11,811 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:06:11" (1/1) ... [2021-11-13 18:06:11,817 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-13 18:06:11,824 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-13 18:06:11,824 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-13 18:06:11,824 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-13 18:06:11,826 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:06:11" (1/1) ... [2021-11-13 18:06:11,835 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-13 18:06:11,847 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73ac7e77-2e24-4a6c-8d04-4d78906280fd/bin/uautomizer-YU5uOKAj3y/z3 [2021-11-13 18:06:11,871 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73ac7e77-2e24-4a6c-8d04-4d78906280fd/bin/uautomizer-YU5uOKAj3y/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-13 18:06:11,890 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73ac7e77-2e24-4a6c-8d04-4d78906280fd/bin/uautomizer-YU5uOKAj3y/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-13 18:06:11,928 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-13 18:06:11,928 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-11-13 18:06:11,928 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-13 18:06:11,929 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-13 18:06:11,929 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2021-11-13 18:06:11,929 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2021-11-13 18:06:11,929 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2021-11-13 18:06:11,929 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2021-11-13 18:06:11,929 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2021-11-13 18:06:11,930 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2021-11-13 18:06:11,930 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-13 18:06:11,930 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-11-13 18:06:11,930 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-13 18:06:11,930 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-13 18:06:11,933 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-11-13 18:06:13,242 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-13 18:06:13,242 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-11-13 18:06:13,245 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 06:06:13 BoogieIcfgContainer [2021-11-13 18:06:13,245 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-13 18:06:13,247 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-13 18:06:13,247 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-13 18:06:13,252 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-13 18:06:13,252 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.11 06:06:10" (1/3) ... [2021-11-13 18:06:13,253 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1768d564 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.11 06:06:13, skipping insertion in model container [2021-11-13 18:06:13,253 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:06:11" (2/3) ... [2021-11-13 18:06:13,254 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1768d564 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.11 06:06:13, skipping insertion in model container [2021-11-13 18:06:13,254 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 06:06:13" (3/3) ... [2021-11-13 18:06:13,256 INFO L111 eAbstractionObserver]: Analyzing ICFG safe004_power.opt_pso.opt_rmo.opt.i [2021-11-13 18:06:13,262 WARN L149 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-11-13 18:06:13,263 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-13 18:06:13,263 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2021-11-13 18:06:13,263 INFO L513 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-11-13 18:06:13,305 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 18:06:13,305 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 18:06:13,306 WARN L322 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 18:06:13,306 WARN L322 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 18:06:13,306 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 18:06:13,306 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 18:06:13,307 WARN L322 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 18:06:13,307 WARN L322 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 18:06:13,307 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#t~ite5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 18:06:13,308 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#t~ite6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 18:06:13,308 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#t~ite5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 18:06:13,308 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#t~ite9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 18:06:13,308 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#t~ite8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 18:06:13,308 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#t~ite7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 18:06:13,309 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#t~ite10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 18:06:13,309 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#t~ite5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 18:06:13,310 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#t~ite6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 18:06:13,310 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#t~ite5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 18:06:13,310 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#t~ite9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 18:06:13,310 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#t~ite8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 18:06:13,310 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#t~ite7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 18:06:13,311 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#t~ite10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 18:06:13,311 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 18:06:13,312 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 18:06:13,312 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 18:06:13,312 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 18:06:13,313 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#in~arg#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 18:06:13,313 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#in~arg#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 18:06:13,313 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_~arg#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 18:06:13,314 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_~arg#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 18:06:13,314 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#in~arg#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 18:06:13,314 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#in~arg#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 18:06:13,314 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_~arg#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 18:06:13,314 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_~arg#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 18:06:13,315 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2___VERIFIER_assert_#in~expression#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 18:06:13,315 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2___VERIFIER_assert_~expression#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 18:06:13,315 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2___VERIFIER_assert_#in~expression#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 18:06:13,316 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2___VERIFIER_assert_~expression#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 18:06:13,316 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2___VERIFIER_assert_#in~expression#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 18:06:13,316 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2___VERIFIER_assert_~expression#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 18:06:13,316 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2___VERIFIER_assert_#in~expression#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 18:06:13,317 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2___VERIFIER_assert_~expression#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 18:06:13,317 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#t~ite11#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 18:06:13,317 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#t~ite14#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 18:06:13,318 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#t~ite11#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 18:06:13,318 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#t~ite12#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 18:06:13,318 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#t~ite16#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 18:06:13,318 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#t~ite15#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 18:06:13,318 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#t~ite13#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 18:06:13,319 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#t~ite11#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 18:06:13,319 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#t~ite14#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 18:06:13,319 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#t~ite11#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 18:06:13,320 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#t~ite12#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 18:06:13,320 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#t~ite16#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 18:06:13,320 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#t~ite15#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 18:06:13,320 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#t~ite13#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 18:06:13,321 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 18:06:13,321 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 18:06:13,322 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 18:06:13,322 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 18:06:13,322 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 18:06:13,323 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 18:06:13,323 WARN L322 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 18:06:13,323 WARN L322 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 18:06:13,323 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 18:06:13,324 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 18:06:13,324 WARN L322 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 18:06:13,324 WARN L322 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 18:06:13,324 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#t~ite17| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 18:06:13,325 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#t~ite18| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 18:06:13,325 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#t~ite19| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 18:06:13,325 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#t~ite22| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 18:06:13,325 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#t~ite21| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 18:06:13,326 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#t~ite17| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 18:06:13,326 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#t~ite20| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 18:06:13,326 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#t~ite17| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 18:06:13,327 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#t~ite18| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 18:06:13,327 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#t~ite19| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 18:06:13,327 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#t~ite22| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 18:06:13,327 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#t~ite21| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 18:06:13,328 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#t~ite17| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 18:06:13,328 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#t~ite20| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 18:06:13,328 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 18:06:13,329 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 18:06:13,329 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 18:06:13,329 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 18:06:13,333 WARN L322 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 18:06:13,334 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#t~ite17| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 18:06:13,334 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 18:06:13,334 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#t~ite21| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 18:06:13,334 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#t~ite22| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 18:06:13,335 WARN L322 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 18:06:13,335 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#t~ite20| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 18:06:13,335 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#t~ite18| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 18:06:13,335 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#t~ite19| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 18:06:13,336 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 18:06:13,337 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#t~ite10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 18:06:13,337 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#t~ite5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 18:06:13,337 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#t~ite8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 18:06:13,338 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 18:06:13,338 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#t~ite9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 18:06:13,338 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#t~ite6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 18:06:13,339 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#t~ite7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 18:06:13,339 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 18:06:13,339 WARN L322 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 18:06:13,339 WARN L322 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 18:06:13,340 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_~arg#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 18:06:13,340 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#t~ite12#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 18:06:13,341 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 18:06:13,341 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#t~ite11#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 18:06:13,341 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2___VERIFIER_assert_#in~expression#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 18:06:13,341 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#t~ite13#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 18:06:13,342 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_~arg#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 18:06:13,342 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#t~ite16#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 18:06:13,342 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#t~ite15#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 18:06:13,342 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2___VERIFIER_assert_~expression#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 18:06:13,343 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 18:06:13,343 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#t~ite14#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 18:06:13,343 INFO L148 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-11-13 18:06:13,402 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-13 18:06:13,411 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-13 18:06:13,411 INFO L340 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2021-11-13 18:06:13,428 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 122 places, 114 transitions, 243 flow [2021-11-13 18:06:13,523 INFO L129 PetriNetUnfolder]: 2/111 cut-off events. [2021-11-13 18:06:13,523 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-11-13 18:06:13,528 INFO L84 FinitePrefix]: Finished finitePrefix Result has 121 conditions, 111 events. 2/111 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 54 event pairs, 0 based on Foata normal form. 0/107 useless extension candidates. Maximal degree in co-relation 73. Up to 2 conditions per place. [2021-11-13 18:06:13,529 INFO L82 GeneralOperation]: Start removeDead. Operand has 122 places, 114 transitions, 243 flow [2021-11-13 18:06:13,536 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 119 places, 111 transitions, 231 flow [2021-11-13 18:06:13,568 INFO L129 PetriNetUnfolder]: 0/60 cut-off events. [2021-11-13 18:06:13,568 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-11-13 18:06:13,568 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-13 18:06:13,570 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 18:06:13,570 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting P1Err0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION (and 3 more)] === [2021-11-13 18:06:13,581 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:06:13,581 INFO L85 PathProgramCache]: Analyzing trace with hash -388777824, now seen corresponding path program 1 times [2021-11-13 18:06:13,590 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 18:06:13,590 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1341658500] [2021-11-13 18:06:13,590 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:06:13,591 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 18:06:13,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:06:14,011 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 18:06:14,012 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 18:06:14,012 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1341658500] [2021-11-13 18:06:14,013 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1341658500] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 18:06:14,013 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 18:06:14,014 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-13 18:06:14,015 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [857808776] [2021-11-13 18:06:14,016 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 18:06:14,028 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-13 18:06:14,028 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 18:06:14,061 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-13 18:06:14,062 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-13 18:06:14,064 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 100 out of 114 [2021-11-13 18:06:14,069 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 119 places, 111 transitions, 231 flow. Second operand has 3 states, 3 states have (on average 101.33333333333333) internal successors, (304), 3 states have internal predecessors, (304), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 18:06:14,069 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-13 18:06:14,070 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 100 of 114 [2021-11-13 18:06:14,071 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-13 18:06:14,244 INFO L129 PetriNetUnfolder]: 57/323 cut-off events. [2021-11-13 18:06:14,245 INFO L130 PetriNetUnfolder]: For 9/9 co-relation queries the response was YES. [2021-11-13 18:06:14,249 INFO L84 FinitePrefix]: Finished finitePrefix Result has 448 conditions, 323 events. 57/323 cut-off events. For 9/9 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 1318 event pairs, 11 based on Foata normal form. 12/318 useless extension candidates. Maximal degree in co-relation 397. Up to 75 conditions per place. [2021-11-13 18:06:14,255 INFO L132 encePairwiseOnDemand]: 109/114 looper letters, 13 selfloop transitions, 2 changer transitions 0/112 dead transitions. [2021-11-13 18:06:14,255 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 119 places, 112 transitions, 266 flow [2021-11-13 18:06:14,257 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-13 18:06:14,260 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-11-13 18:06:14,275 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 320 transitions. [2021-11-13 18:06:14,282 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.935672514619883 [2021-11-13 18:06:14,283 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 320 transitions. [2021-11-13 18:06:14,283 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 320 transitions. [2021-11-13 18:06:14,288 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-13 18:06:14,292 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 320 transitions. [2021-11-13 18:06:14,299 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 106.66666666666667) internal successors, (320), 3 states have internal predecessors, (320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 18:06:14,309 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 114.0) internal successors, (456), 4 states have internal predecessors, (456), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 18:06:14,310 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 114.0) internal successors, (456), 4 states have internal predecessors, (456), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 18:06:14,312 INFO L186 Difference]: Start difference. First operand has 119 places, 111 transitions, 231 flow. Second operand 3 states and 320 transitions. [2021-11-13 18:06:14,313 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 119 places, 112 transitions, 266 flow [2021-11-13 18:06:14,322 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 116 places, 112 transitions, 262 flow, removed 0 selfloop flow, removed 3 redundant places. [2021-11-13 18:06:14,328 INFO L242 Difference]: Finished difference. Result has 116 places, 107 transitions, 224 flow [2021-11-13 18:06:14,331 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=114, PETRI_DIFFERENCE_MINUEND_FLOW=220, PETRI_DIFFERENCE_MINUEND_PLACES=114, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=107, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=105, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=224, PETRI_PLACES=116, PETRI_TRANSITIONS=107} [2021-11-13 18:06:14,347 INFO L334 CegarLoopForPetriNet]: 119 programPoint places, -3 predicate places. [2021-11-13 18:06:14,347 INFO L470 AbstractCegarLoop]: Abstraction has has 116 places, 107 transitions, 224 flow [2021-11-13 18:06:14,348 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 101.33333333333333) internal successors, (304), 3 states have internal predecessors, (304), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 18:06:14,348 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-13 18:06:14,348 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 18:06:14,348 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-13 18:06:14,350 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION (and 3 more)] === [2021-11-13 18:06:14,350 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:06:14,351 INFO L85 PathProgramCache]: Analyzing trace with hash 1563106335, now seen corresponding path program 1 times [2021-11-13 18:06:14,351 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 18:06:14,351 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [897921519] [2021-11-13 18:06:14,351 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:06:14,352 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 18:06:14,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:06:14,782 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 18:06:14,782 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 18:06:14,783 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [897921519] [2021-11-13 18:06:14,783 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [897921519] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 18:06:14,783 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 18:06:14,783 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-13 18:06:14,784 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [447666964] [2021-11-13 18:06:14,784 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 18:06:14,786 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-13 18:06:14,787 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 18:06:14,789 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-13 18:06:14,790 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-13 18:06:14,792 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 90 out of 114 [2021-11-13 18:06:14,793 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 116 places, 107 transitions, 224 flow. Second operand has 6 states, 6 states have (on average 91.83333333333333) internal successors, (551), 6 states have internal predecessors, (551), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 18:06:14,793 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-13 18:06:14,793 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 90 of 114 [2021-11-13 18:06:14,794 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-13 18:06:15,839 INFO L129 PetriNetUnfolder]: 1152/3062 cut-off events. [2021-11-13 18:06:15,839 INFO L130 PetriNetUnfolder]: For 135/135 co-relation queries the response was YES. [2021-11-13 18:06:15,854 INFO L84 FinitePrefix]: Finished finitePrefix Result has 4978 conditions, 3062 events. 1152/3062 cut-off events. For 135/135 co-relation queries the response was YES. Maximal size of possible extension queue 161. Compared 24421 event pairs, 256 based on Foata normal form. 0/2973 useless extension candidates. Maximal degree in co-relation 4927. Up to 992 conditions per place. [2021-11-13 18:06:15,873 INFO L132 encePairwiseOnDemand]: 107/114 looper letters, 25 selfloop transitions, 3 changer transitions 63/167 dead transitions. [2021-11-13 18:06:15,876 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 124 places, 167 transitions, 522 flow [2021-11-13 18:06:15,877 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-13 18:06:15,878 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-11-13 18:06:15,882 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 892 transitions. [2021-11-13 18:06:15,884 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8693957115009746 [2021-11-13 18:06:15,884 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 892 transitions. [2021-11-13 18:06:15,885 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 892 transitions. [2021-11-13 18:06:15,886 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-13 18:06:15,887 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 892 transitions. [2021-11-13 18:06:15,898 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) [2021-11-13 18:06:15,905 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 114.0) internal successors, (1140), 10 states have internal predecessors, (1140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 18:06:15,906 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 114.0) internal successors, (1140), 10 states have internal predecessors, (1140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 18:06:15,906 INFO L186 Difference]: Start difference. First operand has 116 places, 107 transitions, 224 flow. Second operand 9 states and 892 transitions. [2021-11-13 18:06:15,907 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 124 places, 167 transitions, 522 flow [2021-11-13 18:06:15,912 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 122 places, 167 transitions, 504 flow, removed 0 selfloop flow, removed 2 redundant places. [2021-11-13 18:06:15,917 INFO L242 Difference]: Finished difference. Result has 129 places, 97 transitions, 239 flow [2021-11-13 18:06:15,917 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=114, PETRI_DIFFERENCE_MINUEND_FLOW=220, PETRI_DIFFERENCE_MINUEND_PLACES=114, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=107, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=104, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=239, PETRI_PLACES=129, PETRI_TRANSITIONS=97} [2021-11-13 18:06:15,918 INFO L334 CegarLoopForPetriNet]: 119 programPoint places, 10 predicate places. [2021-11-13 18:06:15,919 INFO L470 AbstractCegarLoop]: Abstraction has has 129 places, 97 transitions, 239 flow [2021-11-13 18:06:15,919 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 91.83333333333333) internal successors, (551), 6 states have internal predecessors, (551), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 18:06:15,920 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-13 18:06:15,920 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 18:06:15,920 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-13 18:06:15,920 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION (and 3 more)] === [2021-11-13 18:06:15,922 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:06:15,922 INFO L85 PathProgramCache]: Analyzing trace with hash -153763700, now seen corresponding path program 1 times [2021-11-13 18:06:15,922 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 18:06:15,923 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2056644180] [2021-11-13 18:06:15,923 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:06:15,923 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 18:06:16,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:06:16,248 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 18:06:16,249 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 18:06:16,251 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2056644180] [2021-11-13 18:06:16,251 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2056644180] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 18:06:16,252 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 18:06:16,252 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-13 18:06:16,252 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1498328676] [2021-11-13 18:06:16,253 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 18:06:16,254 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-13 18:06:16,255 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 18:06:16,256 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-13 18:06:16,256 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-13 18:06:16,262 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 93 out of 114 [2021-11-13 18:06:16,266 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 129 places, 97 transitions, 239 flow. Second operand has 6 states, 6 states have (on average 94.83333333333333) internal successors, (569), 6 states have internal predecessors, (569), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 18:06:16,267 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-13 18:06:16,267 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 93 of 114 [2021-11-13 18:06:16,267 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-13 18:06:16,873 INFO L129 PetriNetUnfolder]: 420/940 cut-off events. [2021-11-13 18:06:16,873 INFO L130 PetriNetUnfolder]: For 682/682 co-relation queries the response was YES. [2021-11-13 18:06:16,879 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2147 conditions, 940 events. 420/940 cut-off events. For 682/682 co-relation queries the response was YES. Maximal size of possible extension queue 73. Compared 5198 event pairs, 98 based on Foata normal form. 30/931 useless extension candidates. Maximal degree in co-relation 2089. Up to 295 conditions per place. [2021-11-13 18:06:16,886 INFO L132 encePairwiseOnDemand]: 108/114 looper letters, 18 selfloop transitions, 2 changer transitions 31/132 dead transitions. [2021-11-13 18:06:16,886 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 119 places, 132 transitions, 429 flow [2021-11-13 18:06:16,887 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-13 18:06:16,887 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-11-13 18:06:16,890 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 890 transitions. [2021-11-13 18:06:16,891 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8674463937621832 [2021-11-13 18:06:16,891 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 890 transitions. [2021-11-13 18:06:16,891 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 890 transitions. [2021-11-13 18:06:16,892 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-13 18:06:16,893 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 890 transitions. [2021-11-13 18:06:16,896 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 98.88888888888889) internal successors, (890), 9 states have internal predecessors, (890), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 18:06:16,900 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 114.0) internal successors, (1140), 10 states have internal predecessors, (1140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 18:06:16,901 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 114.0) internal successors, (1140), 10 states have internal predecessors, (1140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 18:06:16,902 INFO L186 Difference]: Start difference. First operand has 129 places, 97 transitions, 239 flow. Second operand 9 states and 890 transitions. [2021-11-13 18:06:16,902 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 119 places, 132 transitions, 429 flow [2021-11-13 18:06:16,915 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 115 places, 132 transitions, 412 flow, removed 7 selfloop flow, removed 4 redundant places. [2021-11-13 18:06:16,922 INFO L242 Difference]: Finished difference. Result has 122 places, 97 transitions, 250 flow [2021-11-13 18:06:16,922 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=114, PETRI_DIFFERENCE_MINUEND_FLOW=230, PETRI_DIFFERENCE_MINUEND_PLACES=107, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=97, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=95, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=250, PETRI_PLACES=122, PETRI_TRANSITIONS=97} [2021-11-13 18:06:16,925 INFO L334 CegarLoopForPetriNet]: 119 programPoint places, 3 predicate places. [2021-11-13 18:06:16,925 INFO L470 AbstractCegarLoop]: Abstraction has has 122 places, 97 transitions, 250 flow [2021-11-13 18:06:16,926 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 94.83333333333333) internal successors, (569), 6 states have internal predecessors, (569), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 18:06:16,926 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-13 18:06:16,927 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 18:06:16,927 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-13 18:06:16,927 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION (and 3 more)] === [2021-11-13 18:06:16,929 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:06:16,929 INFO L85 PathProgramCache]: Analyzing trace with hash -1392322563, now seen corresponding path program 1 times [2021-11-13 18:06:16,929 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 18:06:16,929 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1036981181] [2021-11-13 18:06:16,930 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:06:16,930 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 18:06:17,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:06:17,199 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 18:06:17,199 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 18:06:17,199 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1036981181] [2021-11-13 18:06:17,200 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1036981181] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 18:06:17,200 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 18:06:17,200 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-13 18:06:17,200 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [262287181] [2021-11-13 18:06:17,201 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 18:06:17,201 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-13 18:06:17,201 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 18:06:17,202 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-13 18:06:17,202 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-11-13 18:06:17,204 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 114 [2021-11-13 18:06:17,205 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 122 places, 97 transitions, 250 flow. Second operand has 7 states, 7 states have (on average 91.0) internal successors, (637), 7 states have internal predecessors, (637), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 18:06:17,205 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-13 18:06:17,206 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 114 [2021-11-13 18:06:17,206 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-13 18:06:17,908 INFO L129 PetriNetUnfolder]: 799/1625 cut-off events. [2021-11-13 18:06:17,909 INFO L130 PetriNetUnfolder]: For 2174/2174 co-relation queries the response was YES. [2021-11-13 18:06:17,916 INFO L84 FinitePrefix]: Finished finitePrefix Result has 4234 conditions, 1625 events. 799/1625 cut-off events. For 2174/2174 co-relation queries the response was YES. Maximal size of possible extension queue 103. Compared 9953 event pairs, 152 based on Foata normal form. 30/1584 useless extension candidates. Maximal degree in co-relation 4170. Up to 614 conditions per place. [2021-11-13 18:06:17,927 INFO L132 encePairwiseOnDemand]: 105/114 looper letters, 27 selfloop transitions, 5 changer transitions 30/137 dead transitions. [2021-11-13 18:06:17,927 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 122 places, 137 transitions, 541 flow [2021-11-13 18:06:17,927 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-13 18:06:17,928 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-11-13 18:06:17,930 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 686 transitions. [2021-11-13 18:06:17,930 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8596491228070176 [2021-11-13 18:06:17,931 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 686 transitions. [2021-11-13 18:06:17,931 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 686 transitions. [2021-11-13 18:06:17,932 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-13 18:06:17,932 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 686 transitions. [2021-11-13 18:06:17,935 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 98.0) internal successors, (686), 7 states have internal predecessors, (686), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 18:06:17,938 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 114.0) internal successors, (912), 8 states have internal predecessors, (912), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 18:06:17,938 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 114.0) internal successors, (912), 8 states have internal predecessors, (912), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 18:06:17,939 INFO L186 Difference]: Start difference. First operand has 122 places, 97 transitions, 250 flow. Second operand 7 states and 686 transitions. [2021-11-13 18:06:17,939 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 122 places, 137 transitions, 541 flow [2021-11-13 18:06:17,958 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 114 places, 137 transitions, 515 flow, removed 10 selfloop flow, removed 8 redundant places. [2021-11-13 18:06:17,964 INFO L242 Difference]: Finished difference. Result has 118 places, 97 transitions, 257 flow [2021-11-13 18:06:17,964 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=114, PETRI_DIFFERENCE_MINUEND_FLOW=234, PETRI_DIFFERENCE_MINUEND_PLACES=108, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=97, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=92, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=257, PETRI_PLACES=118, PETRI_TRANSITIONS=97} [2021-11-13 18:06:17,966 INFO L334 CegarLoopForPetriNet]: 119 programPoint places, -1 predicate places. [2021-11-13 18:06:17,967 INFO L470 AbstractCegarLoop]: Abstraction has has 118 places, 97 transitions, 257 flow [2021-11-13 18:06:17,967 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 91.0) internal successors, (637), 7 states have internal predecessors, (637), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 18:06:17,967 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-13 18:06:17,968 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 18:06:17,968 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-13 18:06:17,973 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION (and 3 more)] === [2021-11-13 18:06:17,973 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:06:17,974 INFO L85 PathProgramCache]: Analyzing trace with hash 1359209825, now seen corresponding path program 2 times [2021-11-13 18:06:17,974 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 18:06:17,975 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [551026065] [2021-11-13 18:06:17,975 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:06:17,975 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 18:06:18,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:06:18,173 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 18:06:18,175 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 18:06:18,175 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [551026065] [2021-11-13 18:06:18,176 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [551026065] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 18:06:18,176 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 18:06:18,176 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-13 18:06:18,176 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1274705121] [2021-11-13 18:06:18,177 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 18:06:18,177 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-13 18:06:18,177 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 18:06:18,178 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-13 18:06:18,178 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-13 18:06:18,180 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 93 out of 114 [2021-11-13 18:06:18,181 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 118 places, 97 transitions, 257 flow. Second operand has 6 states, 6 states have (on average 94.83333333333333) internal successors, (569), 6 states have internal predecessors, (569), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 18:06:18,181 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-13 18:06:18,181 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 93 of 114 [2021-11-13 18:06:18,181 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-13 18:06:18,663 INFO L129 PetriNetUnfolder]: 422/938 cut-off events. [2021-11-13 18:06:18,664 INFO L130 PetriNetUnfolder]: For 849/852 co-relation queries the response was YES. [2021-11-13 18:06:18,670 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2225 conditions, 938 events. 422/938 cut-off events. For 849/852 co-relation queries the response was YES. Maximal size of possible extension queue 72. Compared 5042 event pairs, 91 based on Foata normal form. 30/927 useless extension candidates. Maximal degree in co-relation 2162. Up to 301 conditions per place. [2021-11-13 18:06:18,676 INFO L132 encePairwiseOnDemand]: 108/114 looper letters, 18 selfloop transitions, 2 changer transitions 31/132 dead transitions. [2021-11-13 18:06:18,676 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 123 places, 132 transitions, 451 flow [2021-11-13 18:06:18,677 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-13 18:06:18,677 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-11-13 18:06:18,680 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 890 transitions. [2021-11-13 18:06:18,681 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8674463937621832 [2021-11-13 18:06:18,681 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 890 transitions. [2021-11-13 18:06:18,682 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 890 transitions. [2021-11-13 18:06:18,683 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-13 18:06:18,683 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 890 transitions. [2021-11-13 18:06:18,686 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 98.88888888888889) internal successors, (890), 9 states have internal predecessors, (890), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 18:06:18,690 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 114.0) internal successors, (1140), 10 states have internal predecessors, (1140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 18:06:18,691 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 114.0) internal successors, (1140), 10 states have internal predecessors, (1140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 18:06:18,691 INFO L186 Difference]: Start difference. First operand has 118 places, 97 transitions, 257 flow. Second operand 9 states and 890 transitions. [2021-11-13 18:06:18,691 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 123 places, 132 transitions, 451 flow [2021-11-13 18:06:18,696 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 117 places, 132 transitions, 423 flow, removed 9 selfloop flow, removed 6 redundant places. [2021-11-13 18:06:18,699 INFO L242 Difference]: Finished difference. Result has 124 places, 97 transitions, 259 flow [2021-11-13 18:06:18,699 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=114, PETRI_DIFFERENCE_MINUEND_FLOW=239, PETRI_DIFFERENCE_MINUEND_PLACES=109, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=97, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=95, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=259, PETRI_PLACES=124, PETRI_TRANSITIONS=97} [2021-11-13 18:06:18,700 INFO L334 CegarLoopForPetriNet]: 119 programPoint places, 5 predicate places. [2021-11-13 18:06:18,701 INFO L470 AbstractCegarLoop]: Abstraction has has 124 places, 97 transitions, 259 flow [2021-11-13 18:06:18,701 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 94.83333333333333) internal successors, (569), 6 states have internal predecessors, (569), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 18:06:18,701 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-13 18:06:18,702 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 18:06:18,702 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-13 18:06:18,702 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION (and 3 more)] === [2021-11-13 18:06:18,703 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:06:18,703 INFO L85 PathProgramCache]: Analyzing trace with hash 1988417999, now seen corresponding path program 1 times [2021-11-13 18:06:18,703 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 18:06:18,703 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [418616943] [2021-11-13 18:06:18,704 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:06:18,704 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 18:06:18,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:06:18,854 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 18:06:18,854 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 18:06:18,855 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [418616943] [2021-11-13 18:06:18,855 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [418616943] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 18:06:18,855 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 18:06:18,855 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-13 18:06:18,856 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [819532673] [2021-11-13 18:06:18,856 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 18:06:18,856 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-13 18:06:18,857 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 18:06:18,857 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-13 18:06:18,858 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-11-13 18:06:18,859 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 114 [2021-11-13 18:06:18,860 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 124 places, 97 transitions, 259 flow. Second operand has 7 states, 7 states have (on average 91.14285714285714) internal successors, (638), 7 states have internal predecessors, (638), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 18:06:18,861 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-13 18:06:18,861 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 114 [2021-11-13 18:06:18,861 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-13 18:06:19,494 INFO L129 PetriNetUnfolder]: 546/1334 cut-off events. [2021-11-13 18:06:19,494 INFO L130 PetriNetUnfolder]: For 1365/1365 co-relation queries the response was YES. [2021-11-13 18:06:19,501 INFO L84 FinitePrefix]: Finished finitePrefix Result has 3152 conditions, 1334 events. 546/1334 cut-off events. For 1365/1365 co-relation queries the response was YES. Maximal size of possible extension queue 90. Compared 8444 event pairs, 126 based on Foata normal form. 24/1299 useless extension candidates. Maximal degree in co-relation 3086. Up to 277 conditions per place. [2021-11-13 18:06:19,508 INFO L132 encePairwiseOnDemand]: 107/114 looper letters, 32 selfloop transitions, 3 changer transitions 43/153 dead transitions. [2021-11-13 18:06:19,508 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 128 places, 153 transitions, 628 flow [2021-11-13 18:06:19,508 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-13 18:06:19,508 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2021-11-13 18:06:19,511 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 1058 transitions. [2021-11-13 18:06:19,512 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8437001594896332 [2021-11-13 18:06:19,512 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 1058 transitions. [2021-11-13 18:06:19,512 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 1058 transitions. [2021-11-13 18:06:19,513 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-13 18:06:19,514 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 1058 transitions. [2021-11-13 18:06:19,517 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 96.18181818181819) internal successors, (1058), 11 states have internal predecessors, (1058), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 18:06:19,520 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 114.0) internal successors, (1368), 12 states have internal predecessors, (1368), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 18:06:19,521 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 114.0) internal successors, (1368), 12 states have internal predecessors, (1368), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 18:06:19,521 INFO L186 Difference]: Start difference. First operand has 124 places, 97 transitions, 259 flow. Second operand 11 states and 1058 transitions. [2021-11-13 18:06:19,521 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 128 places, 153 transitions, 628 flow [2021-11-13 18:06:19,528 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 120 places, 153 transitions, 572 flow, removed 25 selfloop flow, removed 8 redundant places. [2021-11-13 18:06:19,531 INFO L242 Difference]: Finished difference. Result has 129 places, 97 transitions, 268 flow [2021-11-13 18:06:19,531 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=114, PETRI_DIFFERENCE_MINUEND_FLOW=241, PETRI_DIFFERENCE_MINUEND_PLACES=110, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=97, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=94, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=268, PETRI_PLACES=129, PETRI_TRANSITIONS=97} [2021-11-13 18:06:19,532 INFO L334 CegarLoopForPetriNet]: 119 programPoint places, 10 predicate places. [2021-11-13 18:06:19,533 INFO L470 AbstractCegarLoop]: Abstraction has has 129 places, 97 transitions, 268 flow [2021-11-13 18:06:19,533 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 91.14285714285714) internal successors, (638), 7 states have internal predecessors, (638), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 18:06:19,533 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-13 18:06:19,533 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 18:06:19,534 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-13 18:06:19,534 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION (and 3 more)] === [2021-11-13 18:06:19,534 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:06:19,535 INFO L85 PathProgramCache]: Analyzing trace with hash -1475007665, now seen corresponding path program 1 times [2021-11-13 18:06:19,535 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 18:06:19,535 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1903426053] [2021-11-13 18:06:19,535 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:06:19,535 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 18:06:19,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:06:19,640 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 18:06:19,640 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 18:06:19,641 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1903426053] [2021-11-13 18:06:19,641 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1903426053] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 18:06:19,641 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 18:06:19,641 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-13 18:06:19,641 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [693953640] [2021-11-13 18:06:19,642 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 18:06:19,642 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-13 18:06:19,642 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 18:06:19,643 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-13 18:06:19,643 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-13 18:06:19,644 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 90 out of 114 [2021-11-13 18:06:19,645 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 129 places, 97 transitions, 268 flow. Second operand has 6 states, 6 states have (on average 92.5) internal successors, (555), 6 states have internal predecessors, (555), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 18:06:19,645 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-13 18:06:19,645 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 90 of 114 [2021-11-13 18:06:19,645 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-13 18:06:20,045 INFO L129 PetriNetUnfolder]: 334/834 cut-off events. [2021-11-13 18:06:20,046 INFO L130 PetriNetUnfolder]: For 1324/1324 co-relation queries the response was YES. [2021-11-13 18:06:20,050 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2060 conditions, 834 events. 334/834 cut-off events. For 1324/1324 co-relation queries the response was YES. Maximal size of possible extension queue 60. Compared 4595 event pairs, 88 based on Foata normal form. 20/805 useless extension candidates. Maximal degree in co-relation 1993. Up to 252 conditions per place. [2021-11-13 18:06:20,053 INFO L132 encePairwiseOnDemand]: 108/114 looper letters, 21 selfloop transitions, 2 changer transitions 32/131 dead transitions. [2021-11-13 18:06:20,053 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 129 places, 131 transitions, 517 flow [2021-11-13 18:06:20,054 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-13 18:06:20,054 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-11-13 18:06:20,056 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 866 transitions. [2021-11-13 18:06:20,057 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8440545808966862 [2021-11-13 18:06:20,058 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 866 transitions. [2021-11-13 18:06:20,058 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 866 transitions. [2021-11-13 18:06:20,059 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-13 18:06:20,059 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 866 transitions. [2021-11-13 18:06:20,061 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 96.22222222222223) internal successors, (866), 9 states have internal predecessors, (866), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 18:06:20,064 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 114.0) internal successors, (1140), 10 states have internal predecessors, (1140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 18:06:20,065 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 114.0) internal successors, (1140), 10 states have internal predecessors, (1140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 18:06:20,065 INFO L186 Difference]: Start difference. First operand has 129 places, 97 transitions, 268 flow. Second operand 9 states and 866 transitions. [2021-11-13 18:06:20,065 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 129 places, 131 transitions, 517 flow [2021-11-13 18:06:20,071 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 120 places, 131 transitions, 463 flow, removed 24 selfloop flow, removed 9 redundant places. [2021-11-13 18:06:20,073 INFO L242 Difference]: Finished difference. Result has 127 places, 95 transitions, 250 flow [2021-11-13 18:06:20,073 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=114, PETRI_DIFFERENCE_MINUEND_FLOW=243, PETRI_DIFFERENCE_MINUEND_PLACES=112, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=97, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=95, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=250, PETRI_PLACES=127, PETRI_TRANSITIONS=95} [2021-11-13 18:06:20,074 INFO L334 CegarLoopForPetriNet]: 119 programPoint places, 8 predicate places. [2021-11-13 18:06:20,075 INFO L470 AbstractCegarLoop]: Abstraction has has 127 places, 95 transitions, 250 flow [2021-11-13 18:06:20,075 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 92.5) internal successors, (555), 6 states have internal predecessors, (555), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 18:06:20,075 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-13 18:06:20,076 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 18:06:20,076 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-13 18:06:20,076 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION (and 3 more)] === [2021-11-13 18:06:20,076 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:06:20,077 INFO L85 PathProgramCache]: Analyzing trace with hash 77153262, now seen corresponding path program 1 times [2021-11-13 18:06:20,077 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 18:06:20,077 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [55651957] [2021-11-13 18:06:20,077 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:06:20,078 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 18:06:20,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:06:20,365 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 18:06:20,365 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 18:06:20,366 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [55651957] [2021-11-13 18:06:20,366 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [55651957] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 18:06:20,366 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 18:06:20,366 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-11-13 18:06:20,367 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [195808632] [2021-11-13 18:06:20,367 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 18:06:20,367 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-13 18:06:20,367 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 18:06:20,368 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-13 18:06:20,368 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2021-11-13 18:06:20,370 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 114 [2021-11-13 18:06:20,371 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 127 places, 95 transitions, 250 flow. Second operand has 11 states, 11 states have (on average 90.45454545454545) internal successors, (995), 11 states have internal predecessors, (995), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 18:06:20,372 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-13 18:06:20,372 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 114 [2021-11-13 18:06:20,372 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-13 18:06:20,838 INFO L129 PetriNetUnfolder]: 200/553 cut-off events. [2021-11-13 18:06:20,838 INFO L130 PetriNetUnfolder]: For 446/452 co-relation queries the response was YES. [2021-11-13 18:06:20,841 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1215 conditions, 553 events. 200/553 cut-off events. For 446/452 co-relation queries the response was YES. Maximal size of possible extension queue 34. Compared 2411 event pairs, 70 based on Foata normal form. 12/550 useless extension candidates. Maximal degree in co-relation 1145. Up to 221 conditions per place. [2021-11-13 18:06:20,844 INFO L132 encePairwiseOnDemand]: 101/114 looper letters, 18 selfloop transitions, 9 changer transitions 28/130 dead transitions. [2021-11-13 18:06:20,844 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 134 places, 130 transitions, 466 flow [2021-11-13 18:06:20,845 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-13 18:06:20,845 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2021-11-13 18:06:20,848 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 1303 transitions. [2021-11-13 18:06:20,849 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8164160401002506 [2021-11-13 18:06:20,849 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 1303 transitions. [2021-11-13 18:06:20,850 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 1303 transitions. [2021-11-13 18:06:20,851 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-13 18:06:20,851 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 1303 transitions. [2021-11-13 18:06:20,855 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 93.07142857142857) internal successors, (1303), 14 states have internal predecessors, (1303), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 18:06:20,858 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 114.0) internal successors, (1710), 15 states have internal predecessors, (1710), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 18:06:20,859 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 114.0) internal successors, (1710), 15 states have internal predecessors, (1710), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 18:06:20,860 INFO L186 Difference]: Start difference. First operand has 127 places, 95 transitions, 250 flow. Second operand 14 states and 1303 transitions. [2021-11-13 18:06:20,860 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 134 places, 130 transitions, 466 flow [2021-11-13 18:06:20,863 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 123 places, 130 transitions, 414 flow, removed 24 selfloop flow, removed 11 redundant places. [2021-11-13 18:06:20,865 INFO L242 Difference]: Finished difference. Result has 130 places, 98 transitions, 288 flow [2021-11-13 18:06:20,865 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=114, PETRI_DIFFERENCE_MINUEND_FLOW=222, PETRI_DIFFERENCE_MINUEND_PLACES=110, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=95, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=86, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=288, PETRI_PLACES=130, PETRI_TRANSITIONS=98} [2021-11-13 18:06:20,866 INFO L334 CegarLoopForPetriNet]: 119 programPoint places, 11 predicate places. [2021-11-13 18:06:20,866 INFO L470 AbstractCegarLoop]: Abstraction has has 130 places, 98 transitions, 288 flow [2021-11-13 18:06:20,867 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 90.45454545454545) internal successors, (995), 11 states have internal predecessors, (995), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 18:06:20,867 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-13 18:06:20,867 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 18:06:20,867 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-11-13 18:06:20,868 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION (and 3 more)] === [2021-11-13 18:06:20,868 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:06:20,868 INFO L85 PathProgramCache]: Analyzing trace with hash 734104480, now seen corresponding path program 1 times [2021-11-13 18:06:20,868 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 18:06:20,869 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2031302778] [2021-11-13 18:06:20,869 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:06:20,869 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 18:06:20,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:06:20,982 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 18:06:20,983 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 18:06:20,983 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2031302778] [2021-11-13 18:06:20,983 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2031302778] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 18:06:20,984 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 18:06:20,984 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-13 18:06:20,984 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [259637289] [2021-11-13 18:06:20,984 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 18:06:20,985 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-13 18:06:20,985 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 18:06:20,985 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-13 18:06:20,986 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-13 18:06:20,987 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 90 out of 114 [2021-11-13 18:06:20,988 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 130 places, 98 transitions, 288 flow. Second operand has 6 states, 6 states have (on average 92.33333333333333) internal successors, (554), 6 states have internal predecessors, (554), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 18:06:20,988 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-13 18:06:20,988 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 90 of 114 [2021-11-13 18:06:20,988 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-13 18:06:21,460 INFO L129 PetriNetUnfolder]: 800/1739 cut-off events. [2021-11-13 18:06:21,461 INFO L130 PetriNetUnfolder]: For 3294/3427 co-relation queries the response was YES. [2021-11-13 18:06:21,469 INFO L84 FinitePrefix]: Finished finitePrefix Result has 4690 conditions, 1739 events. 800/1739 cut-off events. For 3294/3427 co-relation queries the response was YES. Maximal size of possible extension queue 129. Compared 10576 event pairs, 42 based on Foata normal form. 4/1679 useless extension candidates. Maximal degree in co-relation 4622. Up to 487 conditions per place. [2021-11-13 18:06:21,478 INFO L132 encePairwiseOnDemand]: 104/114 looper letters, 33 selfloop transitions, 7 changer transitions 40/156 dead transitions. [2021-11-13 18:06:21,479 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 133 places, 156 transitions, 696 flow [2021-11-13 18:06:21,479 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-13 18:06:21,480 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2021-11-13 18:06:21,482 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 976 transitions. [2021-11-13 18:06:21,483 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.856140350877193 [2021-11-13 18:06:21,483 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 976 transitions. [2021-11-13 18:06:21,484 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 976 transitions. [2021-11-13 18:06:21,484 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-13 18:06:21,485 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 976 transitions. [2021-11-13 18:06:21,488 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 97.6) internal successors, (976), 10 states have internal predecessors, (976), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 18:06:21,491 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 114.0) internal successors, (1254), 11 states have internal predecessors, (1254), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 18:06:21,491 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 114.0) internal successors, (1254), 11 states have internal predecessors, (1254), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 18:06:21,492 INFO L186 Difference]: Start difference. First operand has 130 places, 98 transitions, 288 flow. Second operand 10 states and 976 transitions. [2021-11-13 18:06:21,492 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 133 places, 156 transitions, 696 flow [2021-11-13 18:06:21,496 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 123 places, 156 transitions, 666 flow, removed 4 selfloop flow, removed 10 redundant places. [2021-11-13 18:06:21,499 INFO L242 Difference]: Finished difference. Result has 129 places, 102 transitions, 326 flow [2021-11-13 18:06:21,500 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=114, PETRI_DIFFERENCE_MINUEND_FLOW=264, PETRI_DIFFERENCE_MINUEND_PLACES=114, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=98, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=91, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=326, PETRI_PLACES=129, PETRI_TRANSITIONS=102} [2021-11-13 18:06:21,501 INFO L334 CegarLoopForPetriNet]: 119 programPoint places, 10 predicate places. [2021-11-13 18:06:21,501 INFO L470 AbstractCegarLoop]: Abstraction has has 129 places, 102 transitions, 326 flow [2021-11-13 18:06:21,502 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 92.33333333333333) internal successors, (554), 6 states have internal predecessors, (554), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 18:06:21,502 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-13 18:06:21,503 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 18:06:21,503 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-11-13 18:06:21,503 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION (and 3 more)] === [2021-11-13 18:06:21,504 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:06:21,504 INFO L85 PathProgramCache]: Analyzing trace with hash 1518525217, now seen corresponding path program 1 times [2021-11-13 18:06:21,504 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 18:06:21,504 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1907025167] [2021-11-13 18:06:21,504 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:06:21,505 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 18:06:21,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:06:21,631 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 18:06:21,632 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 18:06:21,632 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1907025167] [2021-11-13 18:06:21,632 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1907025167] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 18:06:21,632 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 18:06:21,632 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-13 18:06:21,634 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1028229769] [2021-11-13 18:06:21,636 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 18:06:21,637 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-13 18:06:21,638 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 18:06:21,639 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-13 18:06:21,639 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-11-13 18:06:21,640 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 90 out of 114 [2021-11-13 18:06:21,641 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 129 places, 102 transitions, 326 flow. Second operand has 7 states, 7 states have (on average 92.14285714285714) internal successors, (645), 7 states have internal predecessors, (645), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 18:06:21,641 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-13 18:06:21,641 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 90 of 114 [2021-11-13 18:06:21,641 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-13 18:06:22,030 INFO L129 PetriNetUnfolder]: 345/943 cut-off events. [2021-11-13 18:06:22,030 INFO L130 PetriNetUnfolder]: For 2351/2419 co-relation queries the response was YES. [2021-11-13 18:06:22,035 INFO L84 FinitePrefix]: Finished finitePrefix Result has 3148 conditions, 943 events. 345/943 cut-off events. For 2351/2419 co-relation queries the response was YES. Maximal size of possible extension queue 70. Compared 5404 event pairs, 26 based on Foata normal form. 29/957 useless extension candidates. Maximal degree in co-relation 3081. Up to 236 conditions per place. [2021-11-13 18:06:22,040 INFO L132 encePairwiseOnDemand]: 104/114 looper letters, 41 selfloop transitions, 18 changer transitions 23/158 dead transitions. [2021-11-13 18:06:22,040 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 135 places, 158 transitions, 883 flow [2021-11-13 18:06:22,041 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-13 18:06:22,041 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2021-11-13 18:06:22,044 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 1072 transitions. [2021-11-13 18:06:22,045 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8548644338118022 [2021-11-13 18:06:22,045 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 1072 transitions. [2021-11-13 18:06:22,045 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 1072 transitions. [2021-11-13 18:06:22,046 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-13 18:06:22,046 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 1072 transitions. [2021-11-13 18:06:22,050 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 97.45454545454545) internal successors, (1072), 11 states have internal predecessors, (1072), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 18:06:22,053 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 114.0) internal successors, (1368), 12 states have internal predecessors, (1368), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 18:06:22,054 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 114.0) internal successors, (1368), 12 states have internal predecessors, (1368), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 18:06:22,054 INFO L186 Difference]: Start difference. First operand has 129 places, 102 transitions, 326 flow. Second operand 11 states and 1072 transitions. [2021-11-13 18:06:22,054 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 135 places, 158 transitions, 883 flow [2021-11-13 18:06:22,059 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 131 places, 158 transitions, 867 flow, removed 4 selfloop flow, removed 4 redundant places. [2021-11-13 18:06:22,062 INFO L242 Difference]: Finished difference. Result has 137 places, 117 transitions, 503 flow [2021-11-13 18:06:22,063 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=114, PETRI_DIFFERENCE_MINUEND_FLOW=317, PETRI_DIFFERENCE_MINUEND_PLACES=121, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=102, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=90, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=503, PETRI_PLACES=137, PETRI_TRANSITIONS=117} [2021-11-13 18:06:22,065 INFO L334 CegarLoopForPetriNet]: 119 programPoint places, 18 predicate places. [2021-11-13 18:06:22,065 INFO L470 AbstractCegarLoop]: Abstraction has has 137 places, 117 transitions, 503 flow [2021-11-13 18:06:22,066 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 92.14285714285714) internal successors, (645), 7 states have internal predecessors, (645), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 18:06:22,066 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-13 18:06:22,066 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 18:06:22,067 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-11-13 18:06:22,068 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION (and 3 more)] === [2021-11-13 18:06:22,068 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:06:22,068 INFO L85 PathProgramCache]: Analyzing trace with hash -1886260202, now seen corresponding path program 1 times [2021-11-13 18:06:22,069 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 18:06:22,069 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [849752701] [2021-11-13 18:06:22,069 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:06:22,070 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 18:06:22,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:06:22,225 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 18:06:22,225 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 18:06:22,225 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [849752701] [2021-11-13 18:06:22,226 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [849752701] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 18:06:22,226 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 18:06:22,226 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-11-13 18:06:22,227 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [442873083] [2021-11-13 18:06:22,227 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 18:06:22,228 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-13 18:06:22,229 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 18:06:22,229 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-13 18:06:22,230 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-11-13 18:06:22,231 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 90 out of 114 [2021-11-13 18:06:22,232 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 137 places, 117 transitions, 503 flow. Second operand has 8 states, 8 states have (on average 92.125) internal successors, (737), 8 states have internal predecessors, (737), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 18:06:22,232 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-13 18:06:22,233 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 90 of 114 [2021-11-13 18:06:22,233 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-13 18:06:22,712 INFO L129 PetriNetUnfolder]: 286/824 cut-off events. [2021-11-13 18:06:22,712 INFO L130 PetriNetUnfolder]: For 2958/3035 co-relation queries the response was YES. [2021-11-13 18:06:22,717 INFO L84 FinitePrefix]: Finished finitePrefix Result has 3137 conditions, 824 events. 286/824 cut-off events. For 2958/3035 co-relation queries the response was YES. Maximal size of possible extension queue 70. Compared 4962 event pairs, 22 based on Foata normal form. 17/826 useless extension candidates. Maximal degree in co-relation 3065. Up to 198 conditions per place. [2021-11-13 18:06:22,721 INFO L132 encePairwiseOnDemand]: 104/114 looper letters, 34 selfloop transitions, 22 changer transitions 25/157 dead transitions. [2021-11-13 18:06:22,721 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 150 places, 157 transitions, 953 flow [2021-11-13 18:06:22,722 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-13 18:06:22,722 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2021-11-13 18:06:22,727 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 1333 transitions. [2021-11-13 18:06:22,728 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8352130325814536 [2021-11-13 18:06:22,729 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 1333 transitions. [2021-11-13 18:06:22,729 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 1333 transitions. [2021-11-13 18:06:22,731 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-13 18:06:22,731 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 1333 transitions. [2021-11-13 18:06:22,736 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 95.21428571428571) internal successors, (1333), 14 states have internal predecessors, (1333), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 18:06:22,741 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 114.0) internal successors, (1710), 15 states have internal predecessors, (1710), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 18:06:22,742 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 114.0) internal successors, (1710), 15 states have internal predecessors, (1710), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 18:06:22,742 INFO L186 Difference]: Start difference. First operand has 137 places, 117 transitions, 503 flow. Second operand 14 states and 1333 transitions. [2021-11-13 18:06:22,743 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 150 places, 157 transitions, 953 flow [2021-11-13 18:06:22,757 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 145 places, 157 transitions, 875 flow, removed 33 selfloop flow, removed 5 redundant places. [2021-11-13 18:06:22,761 INFO L242 Difference]: Finished difference. Result has 152 places, 118 transitions, 513 flow [2021-11-13 18:06:22,761 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=114, PETRI_DIFFERENCE_MINUEND_FLOW=429, PETRI_DIFFERENCE_MINUEND_PLACES=132, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=117, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=95, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=513, PETRI_PLACES=152, PETRI_TRANSITIONS=118} [2021-11-13 18:06:22,762 INFO L334 CegarLoopForPetriNet]: 119 programPoint places, 33 predicate places. [2021-11-13 18:06:22,762 INFO L470 AbstractCegarLoop]: Abstraction has has 152 places, 118 transitions, 513 flow [2021-11-13 18:06:22,763 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 92.125) internal successors, (737), 8 states have internal predecessors, (737), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 18:06:22,763 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-13 18:06:22,763 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 18:06:22,763 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-11-13 18:06:22,764 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION (and 3 more)] === [2021-11-13 18:06:22,764 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:06:22,764 INFO L85 PathProgramCache]: Analyzing trace with hash 940523500, now seen corresponding path program 1 times [2021-11-13 18:06:22,765 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 18:06:22,765 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1043661453] [2021-11-13 18:06:22,765 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:06:22,765 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 18:06:22,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:06:23,178 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 18:06:23,178 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 18:06:23,179 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1043661453] [2021-11-13 18:06:23,179 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1043661453] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 18:06:23,179 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 18:06:23,179 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-11-13 18:06:23,179 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [63290813] [2021-11-13 18:06:23,179 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 18:06:23,180 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-13 18:06:23,180 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 18:06:23,180 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-13 18:06:23,180 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=141, Unknown=0, NotChecked=0, Total=182 [2021-11-13 18:06:23,182 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 85 out of 114 [2021-11-13 18:06:23,184 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 152 places, 118 transitions, 513 flow. Second operand has 14 states, 14 states have (on average 86.71428571428571) internal successors, (1214), 14 states have internal predecessors, (1214), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 18:06:23,184 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-13 18:06:23,184 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 85 of 114 [2021-11-13 18:06:23,184 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-13 18:06:23,672 INFO L129 PetriNetUnfolder]: 94/668 cut-off events. [2021-11-13 18:06:23,672 INFO L130 PetriNetUnfolder]: For 1665/1708 co-relation queries the response was YES. [2021-11-13 18:06:23,677 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1992 conditions, 668 events. 94/668 cut-off events. For 1665/1708 co-relation queries the response was YES. Maximal size of possible extension queue 77. Compared 5120 event pairs, 1 based on Foata normal form. 8/647 useless extension candidates. Maximal degree in co-relation 1929. Up to 95 conditions per place. [2021-11-13 18:06:23,679 INFO L132 encePairwiseOnDemand]: 103/114 looper letters, 24 selfloop transitions, 5 changer transitions 11/131 dead transitions. [2021-11-13 18:06:23,679 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 160 places, 131 transitions, 649 flow [2021-11-13 18:06:23,680 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-11-13 18:06:23,680 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2021-11-13 18:06:23,682 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 1058 transitions. [2021-11-13 18:06:23,683 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7733918128654971 [2021-11-13 18:06:23,683 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 1058 transitions. [2021-11-13 18:06:23,683 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 1058 transitions. [2021-11-13 18:06:23,684 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-13 18:06:23,684 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 1058 transitions. [2021-11-13 18:06:23,686 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 88.16666666666667) internal successors, (1058), 12 states have internal predecessors, (1058), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 18:06:23,689 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 114.0) internal successors, (1482), 13 states have internal predecessors, (1482), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 18:06:23,690 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 114.0) internal successors, (1482), 13 states have internal predecessors, (1482), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 18:06:23,690 INFO L186 Difference]: Start difference. First operand has 152 places, 118 transitions, 513 flow. Second operand 12 states and 1058 transitions. [2021-11-13 18:06:23,690 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 160 places, 131 transitions, 649 flow [2021-11-13 18:06:23,704 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 144 places, 131 transitions, 535 flow, removed 39 selfloop flow, removed 16 redundant places. [2021-11-13 18:06:23,707 INFO L242 Difference]: Finished difference. Result has 150 places, 117 transitions, 436 flow [2021-11-13 18:06:23,707 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=114, PETRI_DIFFERENCE_MINUEND_FLOW=417, PETRI_DIFFERENCE_MINUEND_PLACES=133, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=118, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=113, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=436, PETRI_PLACES=150, PETRI_TRANSITIONS=117} [2021-11-13 18:06:23,708 INFO L334 CegarLoopForPetriNet]: 119 programPoint places, 31 predicate places. [2021-11-13 18:06:23,708 INFO L470 AbstractCegarLoop]: Abstraction has has 150 places, 117 transitions, 436 flow [2021-11-13 18:06:23,709 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 86.71428571428571) internal successors, (1214), 14 states have internal predecessors, (1214), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 18:06:23,709 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-13 18:06:23,709 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 18:06:23,709 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-11-13 18:06:23,709 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION (and 3 more)] === [2021-11-13 18:06:23,710 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:06:23,710 INFO L85 PathProgramCache]: Analyzing trace with hash 1354931950, now seen corresponding path program 2 times [2021-11-13 18:06:23,710 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 18:06:23,710 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1172607010] [2021-11-13 18:06:23,710 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:06:23,711 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 18:06:23,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-13 18:06:23,760 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-13 18:06:23,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-13 18:06:23,884 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-11-13 18:06:23,885 INFO L628 BasicCegarLoop]: Counterexample is feasible [2021-11-13 18:06:23,886 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (5 of 6 remaining) [2021-11-13 18:06:23,887 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location P1Err0ASSERT_VIOLATIONERROR_FUNCTION (4 of 6 remaining) [2021-11-13 18:06:23,888 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATION (3 of 6 remaining) [2021-11-13 18:06:23,888 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATION (2 of 6 remaining) [2021-11-13 18:06:23,888 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2INUSE_VIOLATION (1 of 6 remaining) [2021-11-13 18:06:23,888 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location P1Err0ASSERT_VIOLATIONERROR_FUNCTION (0 of 6 remaining) [2021-11-13 18:06:23,888 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-11-13 18:06:23,892 INFO L732 BasicCegarLoop]: Path program histogram: [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 18:06:23,901 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2021-11-13 18:06:23,901 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-11-13 18:06:24,015 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.NullPointerException at de.uni_freiburg.informatik.ultimate.boogie.procedureinliner.backtranslation.InlinerBacktranslator.computeCurrectProc(InlinerBacktranslator.java:230) at de.uni_freiburg.informatik.ultimate.boogie.procedureinliner.backtranslation.InlinerBacktranslator.translateProgramExecution(InlinerBacktranslator.java:203) at de.uni_freiburg.informatik.ultimate.core.coreplugin.services.ModelTranslationContainer.translateProgramExecution(ModelTranslationContainer.java:216) at de.uni_freiburg.informatik.ultimate.core.coreplugin.services.ModelTranslationContainer.translateProgramExecution(ModelTranslationContainer.java:225) at de.uni_freiburg.informatik.ultimate.core.coreplugin.services.ModelTranslationContainer.translateProgramExecution(ModelTranslationContainer.java:225) at de.uni_freiburg.informatik.ultimate.core.coreplugin.services.ModelTranslationContainer.translateProgramExecution(ModelTranslationContainer.java:225) at de.uni_freiburg.informatik.ultimate.core.coreplugin.services.ModelTranslationContainer.translateProgramExecution(ModelTranslationContainer.java:206) at de.uni_freiburg.informatik.ultimate.core.lib.results.CounterExampleResult.getProgramExecutionAsString(CounterExampleResult.java:155) at de.uni_freiburg.informatik.ultimate.core.lib.results.CounterExampleResult.getLongDescription(CounterExampleResult.java:134) at de.uni_freiburg.informatik.ultimate.core.coreplugin.services.ResultService.reportResult(ResultService.java:86) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarLoopResultReporter.reportResult(CegarLoopResultReporter.java:141) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.reportLocationResults(TraceAbstractionStarter.java:586) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:181) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:155) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:123) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2021-11-13 18:06:24,018 INFO L158 Benchmark]: Toolchain (without parser) took 13207.84ms. Allocated memory was 107.0MB in the beginning and 268.4MB in the end (delta: 161.5MB). Free memory was 63.4MB in the beginning and 182.9MB in the end (delta: -119.5MB). Peak memory consumption was 160.1MB. Max. memory is 16.1GB. [2021-11-13 18:06:24,019 INFO L158 Benchmark]: CDTParser took 0.34ms. Allocated memory is still 107.0MB. Free memory was 81.3MB in the beginning and 81.3MB in the end (delta: 61.0kB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-13 18:06:24,020 INFO L158 Benchmark]: CACSL2BoogieTranslator took 797.76ms. Allocated memory is still 107.0MB. Free memory was 63.2MB in the beginning and 66.4MB in the end (delta: -3.2MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-11-13 18:06:24,020 INFO L158 Benchmark]: Boogie Procedure Inliner took 116.08ms. Allocated memory is still 107.0MB. Free memory was 66.4MB in the beginning and 63.4MB in the end (delta: 3.0MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2021-11-13 18:06:24,021 INFO L158 Benchmark]: Boogie Preprocessor took 76.15ms. Allocated memory is still 107.0MB. Free memory was 63.4MB in the beginning and 61.3MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-13 18:06:24,023 INFO L158 Benchmark]: RCFGBuilder took 1421.64ms. Allocated memory was 107.0MB in the beginning and 142.6MB in the end (delta: 35.7MB). Free memory was 61.3MB in the beginning and 73.6MB in the end (delta: -12.3MB). Peak memory consumption was 32.1MB. Max. memory is 16.1GB. [2021-11-13 18:06:24,024 INFO L158 Benchmark]: TraceAbstraction took 10770.49ms. Allocated memory was 142.6MB in the beginning and 268.4MB in the end (delta: 125.8MB). Free memory was 72.8MB in the beginning and 182.9MB in the end (delta: -110.1MB). Peak memory consumption was 134.0MB. Max. memory is 16.1GB. [2021-11-13 18:06:24,028 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.34ms. Allocated memory is still 107.0MB. Free memory was 81.3MB in the beginning and 81.3MB in the end (delta: 61.0kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 797.76ms. Allocated memory is still 107.0MB. Free memory was 63.2MB in the beginning and 66.4MB in the end (delta: -3.2MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 116.08ms. Allocated memory is still 107.0MB. Free memory was 66.4MB in the beginning and 63.4MB in the end (delta: 3.0MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Boogie Preprocessor took 76.15ms. Allocated memory is still 107.0MB. Free memory was 63.4MB in the beginning and 61.3MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 1421.64ms. Allocated memory was 107.0MB in the beginning and 142.6MB in the end (delta: 35.7MB). Free memory was 61.3MB in the beginning and 73.6MB in the end (delta: -12.3MB). Peak memory consumption was 32.1MB. Max. memory is 16.1GB. * TraceAbstraction took 10770.49ms. Allocated memory was 142.6MB in the beginning and 268.4MB in the end (delta: 125.8MB). Free memory was 72.8MB in the beginning and 182.9MB in the end (delta: -110.1MB). Peak memory consumption was 134.0MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - ExceptionOrErrorResult: NullPointerException: null de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: NullPointerException: null: de.uni_freiburg.informatik.ultimate.boogie.procedureinliner.backtranslation.InlinerBacktranslator.computeCurrectProc(InlinerBacktranslator.java:230) RESULT: Ultimate could not prove your program: Toolchain returned no result. [2021-11-13 18:06:24,081 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73ac7e77-2e24-4a6c-8d04-4d78906280fd/bin/uautomizer-YU5uOKAj3y/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 Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73ac7e77-2e24-4a6c-8d04-4d78906280fd/bin/uautomizer-YU5uOKAj3y/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73ac7e77-2e24-4a6c-8d04-4d78906280fd/bin/uautomizer-YU5uOKAj3y/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73ac7e77-2e24-4a6c-8d04-4d78906280fd/bin/uautomizer-YU5uOKAj3y/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73ac7e77-2e24-4a6c-8d04-4d78906280fd/bin/uautomizer-YU5uOKAj3y/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread-wmm/safe004_power.opt_pso.opt_rmo.opt.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73ac7e77-2e24-4a6c-8d04-4d78906280fd/bin/uautomizer-YU5uOKAj3y/config/svcomp-Reach-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73ac7e77-2e24-4a6c-8d04-4d78906280fd/bin/uautomizer-YU5uOKAj3y --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 ad7a565ad4ebe037ce541fa36cdf85746d072cc2b5132ab8ae2e3025ff70fea5 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-63182f1 [2021-11-13 18:06:26,594 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-13 18:06:26,597 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-13 18:06:26,645 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-13 18:06:26,646 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-13 18:06:26,650 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-13 18:06:26,651 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-13 18:06:26,662 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-13 18:06:26,667 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-13 18:06:26,675 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-13 18:06:26,676 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-13 18:06:26,678 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-13 18:06:26,679 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-13 18:06:26,682 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-13 18:06:26,684 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-13 18:06:26,686 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-13 18:06:26,691 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-13 18:06:26,692 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-13 18:06:26,694 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-13 18:06:26,699 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-13 18:06:26,701 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-13 18:06:26,702 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-13 18:06:26,704 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-13 18:06:26,705 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-13 18:06:26,709 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-13 18:06:26,709 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-13 18:06:26,710 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-13 18:06:26,711 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-13 18:06:26,711 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-13 18:06:26,713 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-13 18:06:26,713 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-13 18:06:26,714 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-13 18:06:26,715 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-13 18:06:26,716 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-13 18:06:26,731 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-13 18:06:26,731 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-13 18:06:26,732 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-13 18:06:26,732 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-13 18:06:26,732 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-13 18:06:26,734 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-13 18:06:26,734 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-13 18:06:26,735 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73ac7e77-2e24-4a6c-8d04-4d78906280fd/bin/uautomizer-YU5uOKAj3y/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2021-11-13 18:06:26,764 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-13 18:06:26,766 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-13 18:06:26,767 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-13 18:06:26,767 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-13 18:06:26,768 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-13 18:06:26,768 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-13 18:06:26,769 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-13 18:06:26,770 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-13 18:06:26,770 INFO L138 SettingsManager]: * Use SBE=true [2021-11-13 18:06:26,770 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-13 18:06:26,771 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-13 18:06:26,772 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-13 18:06:26,772 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-13 18:06:26,772 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-13 18:06:26,773 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-13 18:06:26,773 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-13 18:06:26,773 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-13 18:06:26,773 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-13 18:06:26,773 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-13 18:06:26,774 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-13 18:06:26,774 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-13 18:06:26,774 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-13 18:06:26,774 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-13 18:06:26,775 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-13 18:06:26,775 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-13 18:06:26,775 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-13 18:06:26,776 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-13 18:06:26,776 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-13 18:06:26,776 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-13 18:06:26,776 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2021-11-13 18:06:26,777 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-13 18:06:26,777 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-13 18:06:26,777 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-13 18:06:26,777 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-13 18:06:26,778 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-13 18:06:26,778 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-13 18:06:26,778 INFO L138 SettingsManager]: * Logic for external solver=AUFBV 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_73ac7e77-2e24-4a6c-8d04-4d78906280fd/bin/uautomizer-YU5uOKAj3y/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73ac7e77-2e24-4a6c-8d04-4d78906280fd/bin/uautomizer-YU5uOKAj3y Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ad7a565ad4ebe037ce541fa36cdf85746d072cc2b5132ab8ae2e3025ff70fea5 [2021-11-13 18:06:27,180 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-13 18:06:27,202 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-13 18:06:27,205 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-13 18:06:27,206 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-13 18:06:27,207 INFO L275 PluginConnector]: CDTParser initialized [2021-11-13 18:06:27,209 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73ac7e77-2e24-4a6c-8d04-4d78906280fd/bin/uautomizer-YU5uOKAj3y/../../sv-benchmarks/c/pthread-wmm/safe004_power.opt_pso.opt_rmo.opt.i [2021-11-13 18:06:27,280 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73ac7e77-2e24-4a6c-8d04-4d78906280fd/bin/uautomizer-YU5uOKAj3y/data/e2b096ca8/e8abda8f9aec4148a3b9b946998bcc22/FLAGd8ac1d971 [2021-11-13 18:06:27,981 INFO L306 CDTParser]: Found 1 translation units. [2021-11-13 18:06:27,981 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73ac7e77-2e24-4a6c-8d04-4d78906280fd/sv-benchmarks/c/pthread-wmm/safe004_power.opt_pso.opt_rmo.opt.i [2021-11-13 18:06:28,008 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73ac7e77-2e24-4a6c-8d04-4d78906280fd/bin/uautomizer-YU5uOKAj3y/data/e2b096ca8/e8abda8f9aec4148a3b9b946998bcc22/FLAGd8ac1d971 [2021-11-13 18:06:28,185 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73ac7e77-2e24-4a6c-8d04-4d78906280fd/bin/uautomizer-YU5uOKAj3y/data/e2b096ca8/e8abda8f9aec4148a3b9b946998bcc22 [2021-11-13 18:06:28,187 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-13 18:06:28,188 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-13 18:06:28,194 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-13 18:06:28,195 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-13 18:06:28,199 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-13 18:06:28,200 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 06:06:28" (1/1) ... [2021-11-13 18:06:28,201 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2c967437 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:06:28, skipping insertion in model container [2021-11-13 18:06:28,203 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 06:06:28" (1/1) ... [2021-11-13 18:06:28,211 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-13 18:06:28,283 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-13 18:06:28,459 WARN L228 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_73ac7e77-2e24-4a6c-8d04-4d78906280fd/sv-benchmarks/c/pthread-wmm/safe004_power.opt_pso.opt_rmo.opt.i[967,980] [2021-11-13 18:06:28,725 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-13 18:06:28,739 INFO L203 MainTranslator]: Completed pre-run [2021-11-13 18:06:28,754 WARN L228 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_73ac7e77-2e24-4a6c-8d04-4d78906280fd/sv-benchmarks/c/pthread-wmm/safe004_power.opt_pso.opt_rmo.opt.i[967,980] [2021-11-13 18:06:28,839 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-13 18:06:28,910 INFO L208 MainTranslator]: Completed translation [2021-11-13 18:06:28,911 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:06:28 WrapperNode [2021-11-13 18:06:28,911 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-13 18:06:28,912 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-13 18:06:28,912 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-13 18:06:28,912 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-13 18:06:28,921 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:06:28" (1/1) ... [2021-11-13 18:06:28,971 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:06:28" (1/1) ... [2021-11-13 18:06:29,033 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-13 18:06:29,034 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-13 18:06:29,034 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-13 18:06:29,034 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-13 18:06:29,051 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:06:28" (1/1) ... [2021-11-13 18:06:29,051 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:06:28" (1/1) ... [2021-11-13 18:06:29,068 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:06:28" (1/1) ... [2021-11-13 18:06:29,069 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:06:28" (1/1) ... [2021-11-13 18:06:29,100 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:06:28" (1/1) ... [2021-11-13 18:06:29,104 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:06:28" (1/1) ... [2021-11-13 18:06:29,113 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:06:28" (1/1) ... [2021-11-13 18:06:29,136 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-13 18:06:29,137 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-13 18:06:29,137 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-13 18:06:29,138 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-13 18:06:29,138 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:06:28" (1/1) ... [2021-11-13 18:06:29,149 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-13 18:06:29,162 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73ac7e77-2e24-4a6c-8d04-4d78906280fd/bin/uautomizer-YU5uOKAj3y/z3 [2021-11-13 18:06:29,174 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73ac7e77-2e24-4a6c-8d04-4d78906280fd/bin/uautomizer-YU5uOKAj3y/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-13 18:06:29,176 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73ac7e77-2e24-4a6c-8d04-4d78906280fd/bin/uautomizer-YU5uOKAj3y/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-13 18:06:29,218 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-11-13 18:06:29,218 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-13 18:06:29,218 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-13 18:06:29,218 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-11-13 18:06:29,218 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-13 18:06:29,219 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2021-11-13 18:06:29,219 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2021-11-13 18:06:29,219 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2021-11-13 18:06:29,219 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2021-11-13 18:06:29,219 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2021-11-13 18:06:29,220 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2021-11-13 18:06:29,220 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-11-13 18:06:29,220 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-13 18:06:29,220 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-13 18:06:29,222 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-11-13 18:06:30,539 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-13 18:06:30,540 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-11-13 18:06:30,542 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 06:06:30 BoogieIcfgContainer [2021-11-13 18:06:30,543 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-13 18:06:30,545 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-13 18:06:30,545 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-13 18:06:30,548 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-13 18:06:30,548 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.11 06:06:28" (1/3) ... [2021-11-13 18:06:30,549 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7f95fdf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.11 06:06:30, skipping insertion in model container [2021-11-13 18:06:30,549 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:06:28" (2/3) ... [2021-11-13 18:06:30,550 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7f95fdf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.11 06:06:30, skipping insertion in model container [2021-11-13 18:06:30,550 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 06:06:30" (3/3) ... [2021-11-13 18:06:30,551 INFO L111 eAbstractionObserver]: Analyzing ICFG safe004_power.opt_pso.opt_rmo.opt.i [2021-11-13 18:06:30,558 WARN L149 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-11-13 18:06:30,558 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-13 18:06:30,558 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2021-11-13 18:06:30,558 INFO L513 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-11-13 18:06:30,602 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 18:06:30,602 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 18:06:30,602 WARN L322 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 18:06:30,602 WARN L322 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 18:06:30,603 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 18:06:30,603 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 18:06:30,603 WARN L322 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 18:06:30,603 WARN L322 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 18:06:30,604 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#t~ite5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 18:06:30,604 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#t~ite6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 18:06:30,604 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#t~ite5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 18:06:30,604 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#t~ite9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 18:06:30,604 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#t~ite8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 18:06:30,604 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#t~ite7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 18:06:30,605 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#t~ite10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 18:06:30,605 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#t~ite5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 18:06:30,605 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#t~ite6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 18:06:30,606 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#t~ite5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 18:06:30,606 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#t~ite9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 18:06:30,606 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#t~ite8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 18:06:30,606 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#t~ite7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 18:06:30,606 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#t~ite10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 18:06:30,607 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 18:06:30,607 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 18:06:30,608 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 18:06:30,609 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 18:06:30,609 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#in~arg#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 18:06:30,609 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#in~arg#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 18:06:30,610 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_~arg#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 18:06:30,610 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_~arg#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 18:06:30,610 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#in~arg#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 18:06:30,610 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#in~arg#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 18:06:30,611 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_~arg#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 18:06:30,611 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_~arg#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 18:06:30,611 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2___VERIFIER_assert_#in~expression#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 18:06:30,611 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2___VERIFIER_assert_~expression#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 18:06:30,611 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2___VERIFIER_assert_#in~expression#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 18:06:30,612 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2___VERIFIER_assert_~expression#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 18:06:30,612 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2___VERIFIER_assert_#in~expression#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 18:06:30,612 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2___VERIFIER_assert_~expression#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 18:06:30,612 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2___VERIFIER_assert_#in~expression#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 18:06:30,613 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2___VERIFIER_assert_~expression#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 18:06:30,613 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#t~ite11#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 18:06:30,613 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#t~ite14#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 18:06:30,613 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#t~ite11#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 18:06:30,614 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#t~ite12#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 18:06:30,614 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#t~ite16#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 18:06:30,614 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#t~ite15#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 18:06:30,614 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#t~ite13#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 18:06:30,615 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#t~ite11#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 18:06:30,615 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#t~ite14#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 18:06:30,615 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#t~ite11#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 18:06:30,616 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#t~ite12#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 18:06:30,616 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#t~ite16#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 18:06:30,616 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#t~ite15#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 18:06:30,616 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#t~ite13#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 18:06:30,617 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 18:06:30,617 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 18:06:30,617 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 18:06:30,617 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 18:06:30,618 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 18:06:30,618 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 18:06:30,618 WARN L322 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 18:06:30,618 WARN L322 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 18:06:30,619 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 18:06:30,619 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 18:06:30,619 WARN L322 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 18:06:30,619 WARN L322 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 18:06:30,619 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#t~ite17| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 18:06:30,620 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#t~ite18| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 18:06:30,620 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#t~ite19| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 18:06:30,620 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#t~ite22| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 18:06:30,620 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#t~ite21| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 18:06:30,621 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#t~ite17| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 18:06:30,621 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#t~ite20| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 18:06:30,621 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#t~ite17| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 18:06:30,622 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#t~ite18| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 18:06:30,622 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#t~ite19| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 18:06:30,622 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#t~ite22| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 18:06:30,622 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#t~ite21| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 18:06:30,622 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#t~ite17| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 18:06:30,623 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#t~ite20| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 18:06:30,625 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 18:06:30,628 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 18:06:30,628 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 18:06:30,628 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 18:06:30,635 WARN L322 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 18:06:30,636 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#t~ite17| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 18:06:30,636 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 18:06:30,637 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#t~ite21| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 18:06:30,637 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#t~ite22| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 18:06:30,637 WARN L322 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 18:06:30,644 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#t~ite20| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 18:06:30,644 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#t~ite18| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 18:06:30,644 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#t~ite19| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 18:06:30,645 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 18:06:30,646 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#t~ite10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 18:06:30,646 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#t~ite5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 18:06:30,646 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#t~ite8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 18:06:30,646 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 18:06:30,646 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#t~ite9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 18:06:30,647 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#t~ite6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 18:06:30,647 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#t~ite7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 18:06:30,648 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 18:06:30,648 WARN L322 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 18:06:30,648 WARN L322 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 18:06:30,649 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_~arg#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 18:06:30,649 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#t~ite12#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 18:06:30,650 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 18:06:30,650 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#t~ite11#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 18:06:30,650 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2___VERIFIER_assert_#in~expression#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 18:06:30,650 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#t~ite13#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 18:06:30,650 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_~arg#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 18:06:30,650 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#t~ite16#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 18:06:30,651 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#t~ite15#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 18:06:30,651 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2___VERIFIER_assert_~expression#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 18:06:30,651 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 18:06:30,651 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#t~ite14#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 18:06:30,652 INFO L148 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-11-13 18:06:30,720 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-13 18:06:30,728 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-13 18:06:30,729 INFO L340 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2021-11-13 18:06:30,744 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 123 places, 115 transitions, 245 flow [2021-11-13 18:06:30,826 INFO L129 PetriNetUnfolder]: 2/112 cut-off events. [2021-11-13 18:06:30,826 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-11-13 18:06:30,830 INFO L84 FinitePrefix]: Finished finitePrefix Result has 122 conditions, 112 events. 2/112 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 54 event pairs, 0 based on Foata normal form. 0/108 useless extension candidates. Maximal degree in co-relation 73. Up to 2 conditions per place. [2021-11-13 18:06:30,830 INFO L82 GeneralOperation]: Start removeDead. Operand has 123 places, 115 transitions, 245 flow [2021-11-13 18:06:30,837 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 120 places, 112 transitions, 233 flow [2021-11-13 18:06:30,854 INFO L129 PetriNetUnfolder]: 0/61 cut-off events. [2021-11-13 18:06:30,854 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-11-13 18:06:30,854 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-13 18:06:30,855 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 18:06:30,855 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting P1Err0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION (and 3 more)] === [2021-11-13 18:06:30,861 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:06:30,862 INFO L85 PathProgramCache]: Analyzing trace with hash 839774991, now seen corresponding path program 1 times [2021-11-13 18:06:30,875 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-13 18:06:30,876 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1086337077] [2021-11-13 18:06:30,876 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:06:30,877 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 18:06:30,877 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73ac7e77-2e24-4a6c-8d04-4d78906280fd/bin/uautomizer-YU5uOKAj3y/mathsat [2021-11-13 18:06:30,881 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73ac7e77-2e24-4a6c-8d04-4d78906280fd/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 18:06:30,909 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73ac7e77-2e24-4a6c-8d04-4d78906280fd/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-13 18:06:31,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:06:31,067 INFO L263 TraceCheckSpWp]: Trace formula consists of 90 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-13 18:06:31,077 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 18:06:31,337 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 18:06:31,337 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 18:06:31,531 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 18:06:31,532 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-13 18:06:31,532 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1086337077] [2021-11-13 18:06:31,533 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1086337077] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 18:06:31,534 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 18:06:31,534 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-11-13 18:06:31,536 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [435217586] [2021-11-13 18:06:31,538 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 18:06:31,547 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-13 18:06:31,549 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-13 18:06:31,590 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-13 18:06:31,592 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-13 18:06:31,595 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 101 out of 115 [2021-11-13 18:06:31,599 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 120 places, 112 transitions, 233 flow. Second operand has 3 states, 3 states have (on average 102.33333333333333) internal successors, (307), 3 states have internal predecessors, (307), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 18:06:31,599 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-13 18:06:31,600 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 101 of 115 [2021-11-13 18:06:31,601 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-13 18:06:31,850 INFO L129 PetriNetUnfolder]: 57/324 cut-off events. [2021-11-13 18:06:31,850 INFO L130 PetriNetUnfolder]: For 9/9 co-relation queries the response was YES. [2021-11-13 18:06:31,853 INFO L84 FinitePrefix]: Finished finitePrefix Result has 449 conditions, 324 events. 57/324 cut-off events. For 9/9 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 1322 event pairs, 11 based on Foata normal form. 12/319 useless extension candidates. Maximal degree in co-relation 397. Up to 75 conditions per place. [2021-11-13 18:06:31,858 INFO L132 encePairwiseOnDemand]: 110/115 looper letters, 13 selfloop transitions, 2 changer transitions 0/113 dead transitions. [2021-11-13 18:06:31,858 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 120 places, 113 transitions, 268 flow [2021-11-13 18:06:31,859 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-13 18:06:31,862 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-11-13 18:06:31,874 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 323 transitions. [2021-11-13 18:06:31,880 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.936231884057971 [2021-11-13 18:06:31,880 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 323 transitions. [2021-11-13 18:06:31,881 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 323 transitions. [2021-11-13 18:06:31,885 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-13 18:06:31,888 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 323 transitions. [2021-11-13 18:06:31,894 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 107.66666666666667) internal successors, (323), 3 states have internal predecessors, (323), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 18:06:31,901 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 115.0) internal successors, (460), 4 states have internal predecessors, (460), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 18:06:31,901 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 115.0) internal successors, (460), 4 states have internal predecessors, (460), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 18:06:31,904 INFO L186 Difference]: Start difference. First operand has 120 places, 112 transitions, 233 flow. Second operand 3 states and 323 transitions. [2021-11-13 18:06:31,905 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 120 places, 113 transitions, 268 flow [2021-11-13 18:06:31,909 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 117 places, 113 transitions, 264 flow, removed 0 selfloop flow, removed 3 redundant places. [2021-11-13 18:06:31,913 INFO L242 Difference]: Finished difference. Result has 117 places, 108 transitions, 226 flow [2021-11-13 18:06:31,916 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=115, PETRI_DIFFERENCE_MINUEND_FLOW=222, PETRI_DIFFERENCE_MINUEND_PLACES=115, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=108, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=106, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=226, PETRI_PLACES=117, PETRI_TRANSITIONS=108} [2021-11-13 18:06:31,920 INFO L334 CegarLoopForPetriNet]: 120 programPoint places, -3 predicate places. [2021-11-13 18:06:31,920 INFO L470 AbstractCegarLoop]: Abstraction has has 117 places, 108 transitions, 226 flow [2021-11-13 18:06:31,921 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 102.33333333333333) internal successors, (307), 3 states have internal predecessors, (307), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 18:06:31,921 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-13 18:06:31,921 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 18:06:31,940 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73ac7e77-2e24-4a6c-8d04-4d78906280fd/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-13 18:06:32,135 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73ac7e77-2e24-4a6c-8d04-4d78906280fd/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 [2021-11-13 18:06:32,136 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION (and 3 more)] === [2021-11-13 18:06:32,136 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:06:32,136 INFO L85 PathProgramCache]: Analyzing trace with hash -748036243, now seen corresponding path program 1 times [2021-11-13 18:06:32,137 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-13 18:06:32,138 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1058264091] [2021-11-13 18:06:32,138 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:06:32,138 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 18:06:32,139 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73ac7e77-2e24-4a6c-8d04-4d78906280fd/bin/uautomizer-YU5uOKAj3y/mathsat [2021-11-13 18:06:32,140 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73ac7e77-2e24-4a6c-8d04-4d78906280fd/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 18:06:32,177 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73ac7e77-2e24-4a6c-8d04-4d78906280fd/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-13 18:06:32,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:06:32,295 INFO L263 TraceCheckSpWp]: Trace formula consists of 131 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-13 18:06:32,298 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 18:06:32,581 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 18:06:32,582 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 18:06:32,826 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 18:06:32,827 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-13 18:06:32,829 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1058264091] [2021-11-13 18:06:32,833 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1058264091] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 18:06:32,833 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 18:06:32,833 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 7 [2021-11-13 18:06:32,834 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1201143319] [2021-11-13 18:06:32,834 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 18:06:32,836 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-13 18:06:32,837 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-13 18:06:32,837 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-13 18:06:32,838 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-11-13 18:06:32,841 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 91 out of 115 [2021-11-13 18:06:32,843 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 117 places, 108 transitions, 226 flow. Second operand has 7 states, 7 states have (on average 93.57142857142857) internal successors, (655), 7 states have internal predecessors, (655), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 18:06:32,843 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-13 18:06:32,843 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 91 of 115 [2021-11-13 18:06:32,843 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-13 18:06:33,585 INFO L129 PetriNetUnfolder]: 482/1152 cut-off events. [2021-11-13 18:06:33,585 INFO L130 PetriNetUnfolder]: For 65/65 co-relation queries the response was YES. [2021-11-13 18:06:33,591 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2032 conditions, 1152 events. 482/1152 cut-off events. For 65/65 co-relation queries the response was YES. Maximal size of possible extension queue 74. Compared 6491 event pairs, 50 based on Foata normal form. 0/1125 useless extension candidates. Maximal degree in co-relation 1980. Up to 106 conditions per place. [2021-11-13 18:06:33,598 INFO L132 encePairwiseOnDemand]: 105/115 looper letters, 34 selfloop transitions, 9 changer transitions 64/195 dead transitions. [2021-11-13 18:06:33,598 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 129 places, 195 transitions, 640 flow [2021-11-13 18:06:33,599 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-11-13 18:06:33,599 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2021-11-13 18:06:33,604 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1293 transitions. [2021-11-13 18:06:33,605 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8648829431438128 [2021-11-13 18:06:33,606 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 1293 transitions. [2021-11-13 18:06:33,606 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 1293 transitions. [2021-11-13 18:06:33,607 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-13 18:06:33,607 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 1293 transitions. [2021-11-13 18:06:33,612 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 99.46153846153847) internal successors, (1293), 13 states have internal predecessors, (1293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 18:06:33,620 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 115.0) internal successors, (1610), 14 states have internal predecessors, (1610), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 18:06:33,622 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 115.0) internal successors, (1610), 14 states have internal predecessors, (1610), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 18:06:33,622 INFO L186 Difference]: Start difference. First operand has 117 places, 108 transitions, 226 flow. Second operand 13 states and 1293 transitions. [2021-11-13 18:06:33,622 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 129 places, 195 transitions, 640 flow [2021-11-13 18:06:33,626 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 127 places, 195 transitions, 616 flow, removed 0 selfloop flow, removed 2 redundant places. [2021-11-13 18:06:33,633 INFO L242 Difference]: Finished difference. Result has 136 places, 113 transitions, 318 flow [2021-11-13 18:06:33,633 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=115, PETRI_DIFFERENCE_MINUEND_FLOW=222, PETRI_DIFFERENCE_MINUEND_PLACES=115, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=108, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=102, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=318, PETRI_PLACES=136, PETRI_TRANSITIONS=113} [2021-11-13 18:06:33,634 INFO L334 CegarLoopForPetriNet]: 120 programPoint places, 16 predicate places. [2021-11-13 18:06:33,635 INFO L470 AbstractCegarLoop]: Abstraction has has 136 places, 113 transitions, 318 flow [2021-11-13 18:06:33,636 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 93.57142857142857) internal successors, (655), 7 states have internal predecessors, (655), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 18:06:33,636 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-13 18:06:33,636 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 18:06:33,657 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73ac7e77-2e24-4a6c-8d04-4d78906280fd/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (3)] Ended with exit code 0 [2021-11-13 18:06:33,851 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73ac7e77-2e24-4a6c-8d04-4d78906280fd/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 [2021-11-13 18:06:33,851 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION (and 3 more)] === [2021-11-13 18:06:33,853 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:06:33,853 INFO L85 PathProgramCache]: Analyzing trace with hash -1831278080, now seen corresponding path program 1 times [2021-11-13 18:06:33,854 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-13 18:06:33,854 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [547303930] [2021-11-13 18:06:33,854 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:06:33,854 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 18:06:33,855 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73ac7e77-2e24-4a6c-8d04-4d78906280fd/bin/uautomizer-YU5uOKAj3y/mathsat [2021-11-13 18:06:33,856 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73ac7e77-2e24-4a6c-8d04-4d78906280fd/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 18:06:33,889 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73ac7e77-2e24-4a6c-8d04-4d78906280fd/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-13 18:06:34,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:06:34,037 INFO L263 TraceCheckSpWp]: Trace formula consists of 162 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-13 18:06:34,041 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 18:06:34,353 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 18:06:34,354 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 18:06:34,660 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 18:06:34,661 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-13 18:06:34,661 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [547303930] [2021-11-13 18:06:34,662 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [547303930] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 18:06:34,662 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 18:06:34,662 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8, 8] imperfect sequences [] total 11 [2021-11-13 18:06:34,662 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [440151145] [2021-11-13 18:06:34,663 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 18:06:34,663 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-13 18:06:34,665 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-13 18:06:34,666 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-13 18:06:34,666 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2021-11-13 18:06:34,669 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 91 out of 115 [2021-11-13 18:06:34,672 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 136 places, 113 transitions, 318 flow. Second operand has 11 states, 11 states have (on average 93.54545454545455) internal successors, (1029), 11 states have internal predecessors, (1029), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 18:06:34,672 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-13 18:06:34,672 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 91 of 115 [2021-11-13 18:06:34,672 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-13 18:06:35,199 INFO L129 PetriNetUnfolder]: 86/334 cut-off events. [2021-11-13 18:06:35,204 INFO L130 PetriNetUnfolder]: For 405/405 co-relation queries the response was YES. [2021-11-13 18:06:35,206 INFO L84 FinitePrefix]: Finished finitePrefix Result has 797 conditions, 334 events. 86/334 cut-off events. For 405/405 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 1279 event pairs, 21 based on Foata normal form. 8/332 useless extension candidates. Maximal degree in co-relation 757. Up to 49 conditions per place. [2021-11-13 18:06:35,208 INFO L132 encePairwiseOnDemand]: 106/115 looper letters, 24 selfloop transitions, 12 changer transitions 33/145 dead transitions. [2021-11-13 18:06:35,209 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 139 places, 145 transitions, 601 flow [2021-11-13 18:06:35,210 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-11-13 18:06:35,210 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2021-11-13 18:06:35,213 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 1151 transitions. [2021-11-13 18:06:35,215 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8340579710144927 [2021-11-13 18:06:35,215 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 1151 transitions. [2021-11-13 18:06:35,215 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 1151 transitions. [2021-11-13 18:06:35,216 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-13 18:06:35,217 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 1151 transitions. [2021-11-13 18:06:35,221 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 95.91666666666667) internal successors, (1151), 12 states have internal predecessors, (1151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 18:06:35,227 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 115.0) internal successors, (1495), 13 states have internal predecessors, (1495), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 18:06:35,229 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 115.0) internal successors, (1495), 13 states have internal predecessors, (1495), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 18:06:35,229 INFO L186 Difference]: Start difference. First operand has 136 places, 113 transitions, 318 flow. Second operand 12 states and 1151 transitions. [2021-11-13 18:06:35,229 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 139 places, 145 transitions, 601 flow [2021-11-13 18:06:35,243 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 132 places, 145 transitions, 515 flow, removed 38 selfloop flow, removed 7 redundant places. [2021-11-13 18:06:35,250 INFO L242 Difference]: Finished difference. Result has 138 places, 101 transitions, 304 flow [2021-11-13 18:06:35,250 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=115, PETRI_DIFFERENCE_MINUEND_FLOW=282, PETRI_DIFFERENCE_MINUEND_PLACES=121, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=113, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=101, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=304, PETRI_PLACES=138, PETRI_TRANSITIONS=101} [2021-11-13 18:06:35,253 INFO L334 CegarLoopForPetriNet]: 120 programPoint places, 18 predicate places. [2021-11-13 18:06:35,254 INFO L470 AbstractCegarLoop]: Abstraction has has 138 places, 101 transitions, 304 flow [2021-11-13 18:06:35,255 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 93.54545454545455) internal successors, (1029), 11 states have internal predecessors, (1029), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 18:06:35,255 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-13 18:06:35,255 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 18:06:35,278 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73ac7e77-2e24-4a6c-8d04-4d78906280fd/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-11-13 18:06:35,478 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73ac7e77-2e24-4a6c-8d04-4d78906280fd/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 [2021-11-13 18:06:35,479 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION (and 3 more)] === [2021-11-13 18:06:35,480 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:06:35,480 INFO L85 PathProgramCache]: Analyzing trace with hash 1763073748, now seen corresponding path program 1 times [2021-11-13 18:06:35,481 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-13 18:06:35,481 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1195035065] [2021-11-13 18:06:35,481 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:06:35,482 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 18:06:35,482 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73ac7e77-2e24-4a6c-8d04-4d78906280fd/bin/uautomizer-YU5uOKAj3y/mathsat [2021-11-13 18:06:35,483 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73ac7e77-2e24-4a6c-8d04-4d78906280fd/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 18:06:35,486 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73ac7e77-2e24-4a6c-8d04-4d78906280fd/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-11-13 18:06:35,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:06:35,649 INFO L263 TraceCheckSpWp]: Trace formula consists of 172 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-13 18:06:35,660 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 18:06:35,976 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 18:06:35,976 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 18:06:36,347 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 18:06:36,348 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-13 18:06:36,348 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1195035065] [2021-11-13 18:06:36,348 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1195035065] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 18:06:36,348 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 18:06:36,348 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [] total 12 [2021-11-13 18:06:36,348 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1098155342] [2021-11-13 18:06:36,349 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 18:06:36,349 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-13 18:06:36,349 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-13 18:06:36,350 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-13 18:06:36,350 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2021-11-13 18:06:36,352 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 90 out of 115 [2021-11-13 18:06:36,353 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 138 places, 101 transitions, 304 flow. Second operand has 12 states, 12 states have (on average 93.0) internal successors, (1116), 12 states have internal predecessors, (1116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 18:06:36,354 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-13 18:06:36,355 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 90 of 115 [2021-11-13 18:06:36,355 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-13 18:06:37,035 INFO L129 PetriNetUnfolder]: 194/842 cut-off events. [2021-11-13 18:06:37,038 INFO L130 PetriNetUnfolder]: For 563/599 co-relation queries the response was YES. [2021-11-13 18:06:37,042 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1797 conditions, 842 events. 194/842 cut-off events. For 563/599 co-relation queries the response was YES. Maximal size of possible extension queue 65. Compared 5674 event pairs, 13 based on Foata normal form. 4/829 useless extension candidates. Maximal degree in co-relation 1732. Up to 99 conditions per place. [2021-11-13 18:06:37,048 INFO L132 encePairwiseOnDemand]: 106/115 looper letters, 32 selfloop transitions, 7 changer transitions 40/160 dead transitions. [2021-11-13 18:06:37,048 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 141 places, 160 transitions, 586 flow [2021-11-13 18:06:37,049 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-11-13 18:06:37,049 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2021-11-13 18:06:37,055 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 1883 transitions. [2021-11-13 18:06:37,057 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.818695652173913 [2021-11-13 18:06:37,057 INFO L72 ComplementDD]: Start complementDD. Operand 20 states and 1883 transitions. [2021-11-13 18:06:37,057 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 1883 transitions. [2021-11-13 18:06:37,059 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-13 18:06:37,060 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 20 states and 1883 transitions. [2021-11-13 18:06:37,069 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 21 states, 20 states have (on average 94.15) internal successors, (1883), 20 states have internal predecessors, (1883), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 18:06:37,076 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 21 states, 21 states have (on average 115.0) internal successors, (2415), 21 states have internal predecessors, (2415), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 18:06:37,078 INFO L81 ComplementDD]: Finished complementDD. Result has 21 states, 21 states have (on average 115.0) internal successors, (2415), 21 states have internal predecessors, (2415), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 18:06:37,078 INFO L186 Difference]: Start difference. First operand has 138 places, 101 transitions, 304 flow. Second operand 20 states and 1883 transitions. [2021-11-13 18:06:37,078 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 141 places, 160 transitions, 586 flow [2021-11-13 18:06:37,086 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 126 places, 160 transitions, 511 flow, removed 19 selfloop flow, removed 15 redundant places. [2021-11-13 18:06:37,094 INFO L242 Difference]: Finished difference. Result has 142 places, 103 transitions, 286 flow [2021-11-13 18:06:37,094 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=115, PETRI_DIFFERENCE_MINUEND_FLOW=229, PETRI_DIFFERENCE_MINUEND_PLACES=107, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=101, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=96, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=286, PETRI_PLACES=142, PETRI_TRANSITIONS=103} [2021-11-13 18:06:37,096 INFO L334 CegarLoopForPetriNet]: 120 programPoint places, 22 predicate places. [2021-11-13 18:06:37,097 INFO L470 AbstractCegarLoop]: Abstraction has has 142 places, 103 transitions, 286 flow [2021-11-13 18:06:37,097 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 93.0) internal successors, (1116), 12 states have internal predecessors, (1116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 18:06:37,098 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-13 18:06:37,098 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 18:06:37,116 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73ac7e77-2e24-4a6c-8d04-4d78906280fd/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-11-13 18:06:37,313 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73ac7e77-2e24-4a6c-8d04-4d78906280fd/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 [2021-11-13 18:06:37,313 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION (and 3 more)] === [2021-11-13 18:06:37,313 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:06:37,314 INFO L85 PathProgramCache]: Analyzing trace with hash 2116588218, now seen corresponding path program 2 times [2021-11-13 18:06:37,314 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-13 18:06:37,315 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [258155770] [2021-11-13 18:06:37,315 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-13 18:06:37,315 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 18:06:37,315 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73ac7e77-2e24-4a6c-8d04-4d78906280fd/bin/uautomizer-YU5uOKAj3y/mathsat [2021-11-13 18:06:37,316 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73ac7e77-2e24-4a6c-8d04-4d78906280fd/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 18:06:37,317 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73ac7e77-2e24-4a6c-8d04-4d78906280fd/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-11-13 18:06:37,465 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-11-13 18:06:37,465 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-13 18:06:37,473 INFO L263 TraceCheckSpWp]: Trace formula consists of 172 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-13 18:06:37,476 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 18:06:37,702 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 18:06:37,702 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 18:06:37,958 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 18:06:37,958 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-13 18:06:37,958 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [258155770] [2021-11-13 18:06:37,959 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [258155770] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 18:06:37,959 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 18:06:37,959 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 10 [2021-11-13 18:06:37,959 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1729884424] [2021-11-13 18:06:37,960 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 18:06:37,960 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-13 18:06:37,960 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-13 18:06:37,961 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-13 18:06:37,961 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2021-11-13 18:06:37,962 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 91 out of 115 [2021-11-13 18:06:37,964 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 142 places, 103 transitions, 286 flow. Second operand has 10 states, 10 states have (on average 94.0) internal successors, (940), 10 states have internal predecessors, (940), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 18:06:37,964 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-13 18:06:37,964 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 91 of 115 [2021-11-13 18:06:37,965 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-13 18:06:38,191 INFO L129 PetriNetUnfolder]: 66/332 cut-off events. [2021-11-13 18:06:38,192 INFO L130 PetriNetUnfolder]: For 90/90 co-relation queries the response was YES. [2021-11-13 18:06:38,194 INFO L84 FinitePrefix]: Finished finitePrefix Result has 623 conditions, 332 events. 66/332 cut-off events. For 90/90 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 1322 event pairs, 10 based on Foata normal form. 1/323 useless extension candidates. Maximal degree in co-relation 597. Up to 56 conditions per place. [2021-11-13 18:06:38,195 INFO L132 encePairwiseOnDemand]: 108/115 looper letters, 20 selfloop transitions, 3 changer transitions 11/116 dead transitions. [2021-11-13 18:06:38,196 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 134 places, 116 transitions, 410 flow [2021-11-13 18:06:38,196 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-13 18:06:38,196 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-11-13 18:06:38,198 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 672 transitions. [2021-11-13 18:06:38,199 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8347826086956521 [2021-11-13 18:06:38,199 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 672 transitions. [2021-11-13 18:06:38,200 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 672 transitions. [2021-11-13 18:06:38,200 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-13 18:06:38,201 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 672 transitions. [2021-11-13 18:06:38,203 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 96.0) internal successors, (672), 7 states have internal predecessors, (672), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 18:06:38,206 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 115.0) internal successors, (920), 8 states have internal predecessors, (920), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 18:06:38,206 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 115.0) internal successors, (920), 8 states have internal predecessors, (920), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 18:06:38,206 INFO L186 Difference]: Start difference. First operand has 142 places, 103 transitions, 286 flow. Second operand 7 states and 672 transitions. [2021-11-13 18:06:38,207 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 134 places, 116 transitions, 410 flow [2021-11-13 18:06:38,209 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 118 places, 116 transitions, 347 flow, removed 28 selfloop flow, removed 16 redundant places. [2021-11-13 18:06:38,211 INFO L242 Difference]: Finished difference. Result has 122 places, 101 transitions, 255 flow [2021-11-13 18:06:38,212 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=115, PETRI_DIFFERENCE_MINUEND_FLOW=247, PETRI_DIFFERENCE_MINUEND_PLACES=112, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=103, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=100, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=255, PETRI_PLACES=122, PETRI_TRANSITIONS=101} [2021-11-13 18:06:38,213 INFO L334 CegarLoopForPetriNet]: 120 programPoint places, 2 predicate places. [2021-11-13 18:06:38,213 INFO L470 AbstractCegarLoop]: Abstraction has has 122 places, 101 transitions, 255 flow [2021-11-13 18:06:38,214 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 94.0) internal successors, (940), 10 states have internal predecessors, (940), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 18:06:38,214 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-13 18:06:38,214 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 18:06:38,242 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73ac7e77-2e24-4a6c-8d04-4d78906280fd/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-11-13 18:06:38,431 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73ac7e77-2e24-4a6c-8d04-4d78906280fd/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 [2021-11-13 18:06:38,432 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION (and 3 more)] === [2021-11-13 18:06:38,432 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:06:38,432 INFO L85 PathProgramCache]: Analyzing trace with hash 1875043686, now seen corresponding path program 3 times [2021-11-13 18:06:38,433 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-13 18:06:38,433 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [219992075] [2021-11-13 18:06:38,433 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-13 18:06:38,433 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 18:06:38,434 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73ac7e77-2e24-4a6c-8d04-4d78906280fd/bin/uautomizer-YU5uOKAj3y/mathsat [2021-11-13 18:06:38,434 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73ac7e77-2e24-4a6c-8d04-4d78906280fd/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 18:06:38,436 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73ac7e77-2e24-4a6c-8d04-4d78906280fd/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-11-13 18:06:38,583 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2021-11-13 18:06:38,583 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-13 18:06:38,590 INFO L263 TraceCheckSpWp]: Trace formula consists of 172 conjuncts, 19 conjunts are in the unsatisfiable core [2021-11-13 18:06:38,595 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 18:06:39,630 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 18:06:39,630 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 18:06:41,492 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 18:06:41,492 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-13 18:06:41,493 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [219992075] [2021-11-13 18:06:41,493 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [219992075] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 18:06:41,493 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 18:06:41,493 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14, 13] imperfect sequences [] total 23 [2021-11-13 18:06:41,498 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1325482002] [2021-11-13 18:06:41,498 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 18:06:41,500 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2021-11-13 18:06:41,500 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-13 18:06:41,501 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-11-13 18:06:41,503 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=89, Invalid=417, Unknown=0, NotChecked=0, Total=506 [2021-11-13 18:06:41,505 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 85 out of 115 [2021-11-13 18:06:41,508 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 122 places, 101 transitions, 255 flow. Second operand has 23 states, 23 states have (on average 86.95652173913044) internal successors, (2000), 23 states have internal predecessors, (2000), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 18:06:41,508 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-13 18:06:41,508 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 85 of 115 [2021-11-13 18:06:41,509 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-13 18:06:41,925 INFO L129 PetriNetUnfolder]: 24/208 cut-off events. [2021-11-13 18:06:41,926 INFO L130 PetriNetUnfolder]: For 7/7 co-relation queries the response was YES. [2021-11-13 18:06:41,928 INFO L84 FinitePrefix]: Finished finitePrefix Result has 335 conditions, 208 events. 24/208 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 593 event pairs, 2 based on Foata normal form. 1/208 useless extension candidates. Maximal degree in co-relation 323. Up to 21 conditions per place. [2021-11-13 18:06:41,930 INFO L132 encePairwiseOnDemand]: 104/115 looper letters, 25 selfloop transitions, 7 changer transitions 5/113 dead transitions. [2021-11-13 18:06:41,931 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 128 places, 113 transitions, 363 flow [2021-11-13 18:06:41,931 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-13 18:06:41,931 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2021-11-13 18:06:41,940 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 973 transitions. [2021-11-13 18:06:41,942 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7691699604743083 [2021-11-13 18:06:41,942 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 973 transitions. [2021-11-13 18:06:41,942 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 973 transitions. [2021-11-13 18:06:41,944 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-13 18:06:41,944 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 973 transitions. [2021-11-13 18:06:41,948 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 88.45454545454545) internal successors, (973), 11 states have internal predecessors, (973), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 18:06:41,952 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 115.0) internal successors, (1380), 12 states have internal predecessors, (1380), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 18:06:41,953 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 115.0) internal successors, (1380), 12 states have internal predecessors, (1380), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 18:06:41,953 INFO L186 Difference]: Start difference. First operand has 122 places, 101 transitions, 255 flow. Second operand 11 states and 973 transitions. [2021-11-13 18:06:41,953 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 128 places, 113 transitions, 363 flow [2021-11-13 18:06:41,955 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 121 places, 113 transitions, 341 flow, removed 7 selfloop flow, removed 7 redundant places. [2021-11-13 18:06:41,959 INFO L242 Difference]: Finished difference. Result has 126 places, 103 transitions, 274 flow [2021-11-13 18:06:41,959 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=115, PETRI_DIFFERENCE_MINUEND_FLOW=239, PETRI_DIFFERENCE_MINUEND_PLACES=111, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=101, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=94, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=274, PETRI_PLACES=126, PETRI_TRANSITIONS=103} [2021-11-13 18:06:41,963 INFO L334 CegarLoopForPetriNet]: 120 programPoint places, 6 predicate places. [2021-11-13 18:06:41,963 INFO L470 AbstractCegarLoop]: Abstraction has has 126 places, 103 transitions, 274 flow [2021-11-13 18:06:41,965 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 86.95652173913044) internal successors, (2000), 23 states have internal predecessors, (2000), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 18:06:41,965 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-13 18:06:41,965 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 18:06:41,981 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73ac7e77-2e24-4a6c-8d04-4d78906280fd/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-11-13 18:06:42,181 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73ac7e77-2e24-4a6c-8d04-4d78906280fd/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 [2021-11-13 18:06:42,181 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION (and 3 more)] === [2021-11-13 18:06:42,181 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:06:42,182 INFO L85 PathProgramCache]: Analyzing trace with hash -525710288, now seen corresponding path program 4 times [2021-11-13 18:06:42,182 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-13 18:06:42,182 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [155320252] [2021-11-13 18:06:42,182 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-11-13 18:06:42,183 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 18:06:42,183 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73ac7e77-2e24-4a6c-8d04-4d78906280fd/bin/uautomizer-YU5uOKAj3y/mathsat [2021-11-13 18:06:42,184 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73ac7e77-2e24-4a6c-8d04-4d78906280fd/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 18:06:42,185 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73ac7e77-2e24-4a6c-8d04-4d78906280fd/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-11-13 18:06:42,353 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-11-13 18:06:42,353 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-13 18:06:42,358 INFO L263 TraceCheckSpWp]: Trace formula consists of 172 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-13 18:06:42,360 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 18:06:42,614 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 18:06:42,614 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 18:06:42,911 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 18:06:42,912 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-13 18:06:42,912 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [155320252] [2021-11-13 18:06:42,912 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [155320252] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 18:06:42,912 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 18:06:42,912 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 6] imperfect sequences [] total 11 [2021-11-13 18:06:42,913 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [144742299] [2021-11-13 18:06:42,913 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 18:06:42,913 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-13 18:06:42,914 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-13 18:06:42,914 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-13 18:06:42,914 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2021-11-13 18:06:42,915 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 90 out of 115 [2021-11-13 18:06:42,917 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 126 places, 103 transitions, 274 flow. Second operand has 11 states, 11 states have (on average 92.81818181818181) internal successors, (1021), 11 states have internal predecessors, (1021), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 18:06:42,917 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-13 18:06:42,917 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 90 of 115 [2021-11-13 18:06:42,917 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-13 18:06:43,147 INFO L129 PetriNetUnfolder]: 60/362 cut-off events. [2021-11-13 18:06:43,147 INFO L130 PetriNetUnfolder]: For 95/96 co-relation queries the response was YES. [2021-11-13 18:06:43,149 INFO L84 FinitePrefix]: Finished finitePrefix Result has 634 conditions, 362 events. 60/362 cut-off events. For 95/96 co-relation queries the response was YES. Maximal size of possible extension queue 43. Compared 1778 event pairs, 11 based on Foata normal form. 2/357 useless extension candidates. Maximal degree in co-relation 621. Up to 40 conditions per place. [2021-11-13 18:06:43,150 INFO L132 encePairwiseOnDemand]: 108/115 looper letters, 21 selfloop transitions, 2 changer transitions 10/115 dead transitions. [2021-11-13 18:06:43,151 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 130 places, 115 transitions, 384 flow [2021-11-13 18:06:43,151 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-13 18:06:43,151 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-11-13 18:06:43,154 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 752 transitions. [2021-11-13 18:06:43,154 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8173913043478261 [2021-11-13 18:06:43,155 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 752 transitions. [2021-11-13 18:06:43,155 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 752 transitions. [2021-11-13 18:06:43,156 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-13 18:06:43,156 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 752 transitions. [2021-11-13 18:06:43,158 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 94.0) internal successors, (752), 8 states have internal predecessors, (752), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 18:06:43,161 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 115.0) internal successors, (1035), 9 states have internal predecessors, (1035), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 18:06:43,161 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 115.0) internal successors, (1035), 9 states have internal predecessors, (1035), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 18:06:43,162 INFO L186 Difference]: Start difference. First operand has 126 places, 103 transitions, 274 flow. Second operand 8 states and 752 transitions. [2021-11-13 18:06:43,162 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 130 places, 115 transitions, 384 flow [2021-11-13 18:06:43,164 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 122 places, 115 transitions, 363 flow, removed 5 selfloop flow, removed 8 redundant places. [2021-11-13 18:06:43,166 INFO L242 Difference]: Finished difference. Result has 127 places, 103 transitions, 274 flow [2021-11-13 18:06:43,166 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=115, PETRI_DIFFERENCE_MINUEND_FLOW=259, PETRI_DIFFERENCE_MINUEND_PLACES=115, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=103, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=101, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=274, PETRI_PLACES=127, PETRI_TRANSITIONS=103} [2021-11-13 18:06:43,167 INFO L334 CegarLoopForPetriNet]: 120 programPoint places, 7 predicate places. [2021-11-13 18:06:43,167 INFO L470 AbstractCegarLoop]: Abstraction has has 127 places, 103 transitions, 274 flow [2021-11-13 18:06:43,168 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 92.81818181818181) internal successors, (1021), 11 states have internal predecessors, (1021), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 18:06:43,168 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-13 18:06:43,168 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 18:06:43,186 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73ac7e77-2e24-4a6c-8d04-4d78906280fd/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-11-13 18:06:43,381 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73ac7e77-2e24-4a6c-8d04-4d78906280fd/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 [2021-11-13 18:06:43,382 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION (and 3 more)] === [2021-11-13 18:06:43,382 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:06:43,382 INFO L85 PathProgramCache]: Analyzing trace with hash 1562273698, now seen corresponding path program 5 times [2021-11-13 18:06:43,383 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-13 18:06:43,383 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [159209568] [2021-11-13 18:06:43,383 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-11-13 18:06:43,383 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 18:06:43,383 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73ac7e77-2e24-4a6c-8d04-4d78906280fd/bin/uautomizer-YU5uOKAj3y/mathsat [2021-11-13 18:06:43,385 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73ac7e77-2e24-4a6c-8d04-4d78906280fd/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 18:06:43,424 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73ac7e77-2e24-4a6c-8d04-4d78906280fd/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-11-13 18:06:43,535 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-11-13 18:06:43,535 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-13 18:06:43,541 INFO L263 TraceCheckSpWp]: Trace formula consists of 172 conjuncts, 21 conjunts are in the unsatisfiable core [2021-11-13 18:06:43,545 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 18:06:44,504 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 18:06:44,504 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 18:06:46,939 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 18:06:46,940 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-13 18:06:46,940 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [159209568] [2021-11-13 18:06:46,940 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [159209568] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 18:06:46,940 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 18:06:46,941 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14, 14] imperfect sequences [] total 23 [2021-11-13 18:06:46,941 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1127848622] [2021-11-13 18:06:46,941 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 18:06:46,942 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2021-11-13 18:06:46,942 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-13 18:06:46,942 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-11-13 18:06:46,943 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=88, Invalid=418, Unknown=0, NotChecked=0, Total=506 [2021-11-13 18:06:46,945 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 84 out of 115 [2021-11-13 18:06:46,948 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 127 places, 103 transitions, 274 flow. Second operand has 23 states, 23 states have (on average 85.6086956521739) internal successors, (1969), 23 states have internal predecessors, (1969), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 18:06:46,948 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-13 18:06:46,948 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 84 of 115 [2021-11-13 18:06:46,948 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-13 18:06:47,352 INFO L129 PetriNetUnfolder]: 31/275 cut-off events. [2021-11-13 18:06:47,353 INFO L130 PetriNetUnfolder]: For 56/58 co-relation queries the response was YES. [2021-11-13 18:06:47,354 INFO L84 FinitePrefix]: Finished finitePrefix Result has 472 conditions, 275 events. 31/275 cut-off events. For 56/58 co-relation queries the response was YES. Maximal size of possible extension queue 29. Compared 1115 event pairs, 3 based on Foata normal form. 1/272 useless extension candidates. Maximal degree in co-relation 457. Up to 28 conditions per place. [2021-11-13 18:06:47,355 INFO L132 encePairwiseOnDemand]: 105/115 looper letters, 24 selfloop transitions, 5 changer transitions 9/113 dead transitions. [2021-11-13 18:06:47,355 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 133 places, 113 transitions, 384 flow [2021-11-13 18:06:47,356 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-13 18:06:47,356 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2021-11-13 18:06:47,359 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 963 transitions. [2021-11-13 18:06:47,360 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7612648221343874 [2021-11-13 18:06:47,360 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 963 transitions. [2021-11-13 18:06:47,360 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 963 transitions. [2021-11-13 18:06:47,361 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-13 18:06:47,361 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 963 transitions. [2021-11-13 18:06:47,365 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 87.54545454545455) internal successors, (963), 11 states have internal predecessors, (963), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 18:06:47,368 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 115.0) internal successors, (1380), 12 states have internal predecessors, (1380), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 18:06:47,369 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 115.0) internal successors, (1380), 12 states have internal predecessors, (1380), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 18:06:47,369 INFO L186 Difference]: Start difference. First operand has 127 places, 103 transitions, 274 flow. Second operand 11 states and 963 transitions. [2021-11-13 18:06:47,370 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 133 places, 113 transitions, 384 flow [2021-11-13 18:06:47,371 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 127 places, 113 transitions, 367 flow, removed 7 selfloop flow, removed 6 redundant places. [2021-11-13 18:06:47,374 INFO L242 Difference]: Finished difference. Result has 131 places, 101 transitions, 269 flow [2021-11-13 18:06:47,374 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=115, PETRI_DIFFERENCE_MINUEND_FLOW=263, PETRI_DIFFERENCE_MINUEND_PLACES=117, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=103, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=98, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=269, PETRI_PLACES=131, PETRI_TRANSITIONS=101} [2021-11-13 18:06:47,378 INFO L334 CegarLoopForPetriNet]: 120 programPoint places, 11 predicate places. [2021-11-13 18:06:47,378 INFO L470 AbstractCegarLoop]: Abstraction has has 131 places, 101 transitions, 269 flow [2021-11-13 18:06:47,380 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 85.6086956521739) internal successors, (1969), 23 states have internal predecessors, (1969), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 18:06:47,380 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-13 18:06:47,380 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 18:06:47,404 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73ac7e77-2e24-4a6c-8d04-4d78906280fd/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2021-11-13 18:06:47,600 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73ac7e77-2e24-4a6c-8d04-4d78906280fd/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 [2021-11-13 18:06:47,600 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION (and 3 more)] === [2021-11-13 18:06:47,600 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:06:47,601 INFO L85 PathProgramCache]: Analyzing trace with hash -1137250254, now seen corresponding path program 6 times [2021-11-13 18:06:47,601 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-13 18:06:47,602 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1993253959] [2021-11-13 18:06:47,602 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-11-13 18:06:47,602 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 18:06:47,602 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73ac7e77-2e24-4a6c-8d04-4d78906280fd/bin/uautomizer-YU5uOKAj3y/mathsat [2021-11-13 18:06:47,608 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73ac7e77-2e24-4a6c-8d04-4d78906280fd/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 18:06:47,649 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73ac7e77-2e24-4a6c-8d04-4d78906280fd/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-11-13 18:06:47,810 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 1 check-sat command(s) [2021-11-13 18:06:47,810 INFO L229 tOrderPrioritization]: Conjunction of SSA is sat [2021-11-13 18:06:47,810 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-13 18:06:47,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-13 18:06:48,160 INFO L133 FreeRefinementEngine]: Strategy WOLF found a feasible trace [2021-11-13 18:06:48,173 INFO L628 BasicCegarLoop]: Counterexample is feasible [2021-11-13 18:06:48,175 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (5 of 6 remaining) [2021-11-13 18:06:48,177 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location P1Err0ASSERT_VIOLATIONERROR_FUNCTION (4 of 6 remaining) [2021-11-13 18:06:48,177 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATION (3 of 6 remaining) [2021-11-13 18:06:48,177 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATION (2 of 6 remaining) [2021-11-13 18:06:48,178 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2INUSE_VIOLATION (1 of 6 remaining) [2021-11-13 18:06:48,178 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location P1Err0ASSERT_VIOLATIONERROR_FUNCTION (0 of 6 remaining) [2021-11-13 18:06:48,205 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73ac7e77-2e24-4a6c-8d04-4d78906280fd/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2021-11-13 18:06:48,394 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73ac7e77-2e24-4a6c-8d04-4d78906280fd/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 [2021-11-13 18:06:48,397 INFO L732 BasicCegarLoop]: Path program histogram: [6, 1, 1, 1] [2021-11-13 18:06:48,403 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2021-11-13 18:06:48,403 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-11-13 18:06:48,510 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.NullPointerException at de.uni_freiburg.informatik.ultimate.boogie.procedureinliner.backtranslation.InlinerBacktranslator.computeCurrectProc(InlinerBacktranslator.java:230) at de.uni_freiburg.informatik.ultimate.boogie.procedureinliner.backtranslation.InlinerBacktranslator.translateProgramExecution(InlinerBacktranslator.java:203) at de.uni_freiburg.informatik.ultimate.core.coreplugin.services.ModelTranslationContainer.translateProgramExecution(ModelTranslationContainer.java:216) at de.uni_freiburg.informatik.ultimate.core.coreplugin.services.ModelTranslationContainer.translateProgramExecution(ModelTranslationContainer.java:225) at de.uni_freiburg.informatik.ultimate.core.coreplugin.services.ModelTranslationContainer.translateProgramExecution(ModelTranslationContainer.java:225) at de.uni_freiburg.informatik.ultimate.core.coreplugin.services.ModelTranslationContainer.translateProgramExecution(ModelTranslationContainer.java:225) at de.uni_freiburg.informatik.ultimate.core.coreplugin.services.ModelTranslationContainer.translateProgramExecution(ModelTranslationContainer.java:206) at de.uni_freiburg.informatik.ultimate.core.lib.results.CounterExampleResult.getProgramExecutionAsString(CounterExampleResult.java:155) at de.uni_freiburg.informatik.ultimate.core.lib.results.CounterExampleResult.getLongDescription(CounterExampleResult.java:134) at de.uni_freiburg.informatik.ultimate.core.coreplugin.services.ResultService.reportResult(ResultService.java:86) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarLoopResultReporter.reportResult(CegarLoopResultReporter.java:141) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.reportLocationResults(TraceAbstractionStarter.java:586) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:181) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:155) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:123) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2021-11-13 18:06:48,513 INFO L158 Benchmark]: Toolchain (without parser) took 20324.77ms. Allocated memory was 56.6MB in the beginning and 144.7MB in the end (delta: 88.1MB). Free memory was 32.5MB in the beginning and 89.7MB in the end (delta: -57.3MB). Peak memory consumption was 87.5MB. Max. memory is 16.1GB. [2021-11-13 18:06:48,514 INFO L158 Benchmark]: CDTParser took 0.24ms. Allocated memory is still 56.6MB. Free memory was 36.3MB in the beginning and 36.3MB in the end (delta: 42.7kB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-13 18:06:48,514 INFO L158 Benchmark]: CACSL2BoogieTranslator took 716.91ms. Allocated memory is still 56.6MB. Free memory was 32.3MB in the beginning and 26.5MB in the end (delta: 5.8MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2021-11-13 18:06:48,515 INFO L158 Benchmark]: Boogie Procedure Inliner took 120.90ms. Allocated memory is still 56.6MB. Free memory was 26.5MB in the beginning and 23.7MB in the end (delta: 2.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-13 18:06:48,515 INFO L158 Benchmark]: Boogie Preprocessor took 102.65ms. Allocated memory was 56.6MB in the beginning and 69.2MB in the end (delta: 12.6MB). Free memory was 23.7MB in the beginning and 49.5MB in the end (delta: -25.8MB). Peak memory consumption was 5.3MB. Max. memory is 16.1GB. [2021-11-13 18:06:48,516 INFO L158 Benchmark]: RCFGBuilder took 1405.59ms. Allocated memory is still 69.2MB. Free memory was 49.2MB in the beginning and 43.2MB in the end (delta: 6.0MB). Peak memory consumption was 25.3MB. Max. memory is 16.1GB. [2021-11-13 18:06:48,516 INFO L158 Benchmark]: TraceAbstraction took 17967.90ms. Allocated memory was 69.2MB in the beginning and 144.7MB in the end (delta: 75.5MB). Free memory was 42.8MB in the beginning and 89.7MB in the end (delta: -47.0MB). Peak memory consumption was 85.3MB. Max. memory is 16.1GB. [2021-11-13 18:06:48,519 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24ms. Allocated memory is still 56.6MB. Free memory was 36.3MB in the beginning and 36.3MB in the end (delta: 42.7kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 716.91ms. Allocated memory is still 56.6MB. Free memory was 32.3MB in the beginning and 26.5MB in the end (delta: 5.8MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 120.90ms. Allocated memory is still 56.6MB. Free memory was 26.5MB in the beginning and 23.7MB in the end (delta: 2.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 102.65ms. Allocated memory was 56.6MB in the beginning and 69.2MB in the end (delta: 12.6MB). Free memory was 23.7MB in the beginning and 49.5MB in the end (delta: -25.8MB). Peak memory consumption was 5.3MB. Max. memory is 16.1GB. * RCFGBuilder took 1405.59ms. Allocated memory is still 69.2MB. Free memory was 49.2MB in the beginning and 43.2MB in the end (delta: 6.0MB). Peak memory consumption was 25.3MB. Max. memory is 16.1GB. * TraceAbstraction took 17967.90ms. Allocated memory was 69.2MB in the beginning and 144.7MB in the end (delta: 75.5MB). Free memory was 42.8MB in the beginning and 89.7MB in the end (delta: -47.0MB). Peak memory consumption was 85.3MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - ExceptionOrErrorResult: NullPointerException: null de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: NullPointerException: null: de.uni_freiburg.informatik.ultimate.boogie.procedureinliner.backtranslation.InlinerBacktranslator.computeCurrectProc(InlinerBacktranslator.java:230) RESULT: Ultimate could not prove your program: Toolchain returned no result. [2021-11-13 18:06:48,577 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73ac7e77-2e24-4a6c-8d04-4d78906280fd/bin/uautomizer-YU5uOKAj3y/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: ERROR: ExceptionOrErrorResult: NullPointerException: null