./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/pthread-wmm/safe019_pso.oepc_pso.opt_tso.oepc_tso.opt.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version e04fb08f Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40c08481-5f88-40a4-ac6e-975f110d3b50/bin/uautomizer-tPACEb0tL8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40c08481-5f88-40a4-ac6e-975f110d3b50/bin/uautomizer-tPACEb0tL8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40c08481-5f88-40a4-ac6e-975f110d3b50/bin/uautomizer-tPACEb0tL8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40c08481-5f88-40a4-ac6e-975f110d3b50/bin/uautomizer-tPACEb0tL8/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread-wmm/safe019_pso.oepc_pso.opt_tso.oepc_tso.opt.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40c08481-5f88-40a4-ac6e-975f110d3b50/bin/uautomizer-tPACEb0tL8/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40c08481-5f88-40a4-ac6e-975f110d3b50/bin/uautomizer-tPACEb0tL8 --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 4633300b13c3e317f8d3cd1cc05f3f76ba271ffedabaa8599cd9617354fa2b7b --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-e04fb08 [2022-11-16 12:01:37,482 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-16 12:01:37,487 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-16 12:01:37,510 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-16 12:01:37,511 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-16 12:01:37,512 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-16 12:01:37,513 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-16 12:01:37,515 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-16 12:01:37,517 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-16 12:01:37,518 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-16 12:01:37,519 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-16 12:01:37,520 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-16 12:01:37,521 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-16 12:01:37,522 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-16 12:01:37,523 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-16 12:01:37,525 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-16 12:01:37,526 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-16 12:01:37,527 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-16 12:01:37,529 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-16 12:01:37,531 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-16 12:01:37,532 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-16 12:01:37,534 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-16 12:01:37,535 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-16 12:01:37,536 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-16 12:01:37,540 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-16 12:01:37,545 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-16 12:01:37,545 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-16 12:01:37,546 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-16 12:01:37,549 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-16 12:01:37,550 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-16 12:01:37,557 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-16 12:01:37,558 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-16 12:01:37,559 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-16 12:01:37,560 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-16 12:01:37,561 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-16 12:01:37,561 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-16 12:01:37,562 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-16 12:01:37,562 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-16 12:01:37,562 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-16 12:01:37,563 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-16 12:01:37,565 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-16 12:01:37,567 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40c08481-5f88-40a4-ac6e-975f110d3b50/bin/uautomizer-tPACEb0tL8/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-11-16 12:01:37,605 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-16 12:01:37,615 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-16 12:01:37,616 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-16 12:01:37,616 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-16 12:01:37,617 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-16 12:01:37,618 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-16 12:01:37,619 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-16 12:01:37,619 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-16 12:01:37,619 INFO L138 SettingsManager]: * Use SBE=true [2022-11-16 12:01:37,619 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-16 12:01:37,621 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-16 12:01:37,621 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-16 12:01:37,621 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-16 12:01:37,621 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-16 12:01:37,622 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-16 12:01:37,622 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-16 12:01:37,622 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-16 12:01:37,622 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-16 12:01:37,623 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-16 12:01:37,623 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-16 12:01:37,623 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-16 12:01:37,623 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-16 12:01:37,623 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-16 12:01:37,625 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-16 12:01:37,626 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 12:01:37,626 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-16 12:01:37,626 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-16 12:01:37,626 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-16 12:01:37,627 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-16 12:01:37,627 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-16 12:01:37,627 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-16 12:01:37,627 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-16 12:01:37,628 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-16 12:01:37,628 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_40c08481-5f88-40a4-ac6e-975f110d3b50/bin/uautomizer-tPACEb0tL8/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40c08481-5f88-40a4-ac6e-975f110d3b50/bin/uautomizer-tPACEb0tL8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4633300b13c3e317f8d3cd1cc05f3f76ba271ffedabaa8599cd9617354fa2b7b [2022-11-16 12:01:37,869 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-16 12:01:37,905 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-16 12:01:37,908 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-16 12:01:37,909 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-16 12:01:37,910 INFO L275 PluginConnector]: CDTParser initialized [2022-11-16 12:01:37,912 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40c08481-5f88-40a4-ac6e-975f110d3b50/bin/uautomizer-tPACEb0tL8/../../sv-benchmarks/c/pthread-wmm/safe019_pso.oepc_pso.opt_tso.oepc_tso.opt.i [2022-11-16 12:01:37,973 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40c08481-5f88-40a4-ac6e-975f110d3b50/bin/uautomizer-tPACEb0tL8/data/55c9ebd34/03f9a25f7e894efa92f68ceb035bad73/FLAGcd8b84a8c [2022-11-16 12:01:38,453 INFO L306 CDTParser]: Found 1 translation units. [2022-11-16 12:01:38,454 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40c08481-5f88-40a4-ac6e-975f110d3b50/sv-benchmarks/c/pthread-wmm/safe019_pso.oepc_pso.opt_tso.oepc_tso.opt.i [2022-11-16 12:01:38,467 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40c08481-5f88-40a4-ac6e-975f110d3b50/bin/uautomizer-tPACEb0tL8/data/55c9ebd34/03f9a25f7e894efa92f68ceb035bad73/FLAGcd8b84a8c [2022-11-16 12:01:38,777 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40c08481-5f88-40a4-ac6e-975f110d3b50/bin/uautomizer-tPACEb0tL8/data/55c9ebd34/03f9a25f7e894efa92f68ceb035bad73 [2022-11-16 12:01:38,780 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-16 12:01:38,781 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-16 12:01:38,784 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-16 12:01:38,784 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-16 12:01:38,789 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-16 12:01:38,790 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 12:01:38" (1/1) ... [2022-11-16 12:01:38,791 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5ffdc652 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:01:38, skipping insertion in model container [2022-11-16 12:01:38,791 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 12:01:38" (1/1) ... [2022-11-16 12:01:38,800 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-16 12:01:38,855 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-16 12:01:39,033 WARN L229 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40c08481-5f88-40a4-ac6e-975f110d3b50/sv-benchmarks/c/pthread-wmm/safe019_pso.oepc_pso.opt_tso.oepc_tso.opt.i[975,988] [2022-11-16 12:01:39,262 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 12:01:39,275 INFO L203 MainTranslator]: Completed pre-run [2022-11-16 12:01:39,291 WARN L229 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40c08481-5f88-40a4-ac6e-975f110d3b50/sv-benchmarks/c/pthread-wmm/safe019_pso.oepc_pso.opt_tso.oepc_tso.opt.i[975,988] [2022-11-16 12:01:39,347 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 12:01:39,383 INFO L208 MainTranslator]: Completed translation [2022-11-16 12:01:39,383 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:01:39 WrapperNode [2022-11-16 12:01:39,383 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-16 12:01:39,385 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-16 12:01:39,385 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-16 12:01:39,385 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-16 12:01:39,393 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:01:39" (1/1) ... [2022-11-16 12:01:39,426 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:01:39" (1/1) ... [2022-11-16 12:01:39,453 INFO L138 Inliner]: procedures = 177, calls = 62, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 82 [2022-11-16 12:01:39,453 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-16 12:01:39,454 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-16 12:01:39,454 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-16 12:01:39,455 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-16 12:01:39,463 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:01:39" (1/1) ... [2022-11-16 12:01:39,464 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:01:39" (1/1) ... [2022-11-16 12:01:39,476 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:01:39" (1/1) ... [2022-11-16 12:01:39,478 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:01:39" (1/1) ... [2022-11-16 12:01:39,483 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:01:39" (1/1) ... [2022-11-16 12:01:39,495 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:01:39" (1/1) ... [2022-11-16 12:01:39,496 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:01:39" (1/1) ... [2022-11-16 12:01:39,498 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:01:39" (1/1) ... [2022-11-16 12:01:39,506 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-16 12:01:39,507 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-16 12:01:39,507 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-16 12:01:39,508 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-16 12:01:39,515 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:01:39" (1/1) ... [2022-11-16 12:01:39,522 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 12:01:39,538 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40c08481-5f88-40a4-ac6e-975f110d3b50/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:01:39,552 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40c08481-5f88-40a4-ac6e-975f110d3b50/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-16 12:01:39,580 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40c08481-5f88-40a4-ac6e-975f110d3b50/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-16 12:01:39,599 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-16 12:01:39,600 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-11-16 12:01:39,600 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-16 12:01:39,600 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-16 12:01:39,600 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-16 12:01:39,600 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2022-11-16 12:01:39,601 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2022-11-16 12:01:39,601 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2022-11-16 12:01:39,602 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2022-11-16 12:01:39,602 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2022-11-16 12:01:39,602 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2022-11-16 12:01:39,602 INFO L130 BoogieDeclarations]: Found specification of procedure P3 [2022-11-16 12:01:39,602 INFO L138 BoogieDeclarations]: Found implementation of procedure P3 [2022-11-16 12:01:39,603 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-16 12:01:39,603 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-11-16 12:01:39,603 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-16 12:01:39,603 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-16 12:01:39,605 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-16 12:01:39,746 INFO L235 CfgBuilder]: Building ICFG [2022-11-16 12:01:39,748 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-16 12:01:39,940 INFO L276 CfgBuilder]: Performing block encoding [2022-11-16 12:01:39,949 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-16 12:01:39,949 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-11-16 12:01:39,963 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 12:01:39 BoogieIcfgContainer [2022-11-16 12:01:39,964 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-16 12:01:39,966 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-16 12:01:39,968 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-16 12:01:39,971 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-16 12:01:39,972 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.11 12:01:38" (1/3) ... [2022-11-16 12:01:39,973 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4ea8f102 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 12:01:39, skipping insertion in model container [2022-11-16 12:01:39,973 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:01:39" (2/3) ... [2022-11-16 12:01:39,973 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4ea8f102 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 12:01:39, skipping insertion in model container [2022-11-16 12:01:39,974 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 12:01:39" (3/3) ... [2022-11-16 12:01:39,975 INFO L112 eAbstractionObserver]: Analyzing ICFG safe019_pso.oepc_pso.opt_tso.oepc_tso.opt.i [2022-11-16 12:01:39,987 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-16 12:01:39,999 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-16 12:01:40,000 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-16 12:01:40,000 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-16 12:01:40,122 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-11-16 12:01:40,179 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 117 places, 106 transitions, 232 flow [2022-11-16 12:01:40,255 INFO L130 PetriNetUnfolder]: 2/102 cut-off events. [2022-11-16 12:01:40,255 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-16 12:01:40,262 INFO L83 FinitePrefix]: Finished finitePrefix Result has 115 conditions, 102 events. 2/102 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 51 event pairs, 0 based on Foata normal form. 0/99 useless extension candidates. Maximal degree in co-relation 83. Up to 2 conditions per place. [2022-11-16 12:01:40,262 INFO L82 GeneralOperation]: Start removeDead. Operand has 117 places, 106 transitions, 232 flow [2022-11-16 12:01:40,268 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 98 places, 86 transitions, 184 flow [2022-11-16 12:01:40,294 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-16 12:01:40,302 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@70a999dd, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-16 12:01:40,302 INFO L358 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2022-11-16 12:01:40,349 INFO L130 PetriNetUnfolder]: 1/85 cut-off events. [2022-11-16 12:01:40,356 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-16 12:01:40,357 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:01:40,358 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:01:40,358 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-11-16 12:01:40,363 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:01:40,364 INFO L85 PathProgramCache]: Analyzing trace with hash 1910105396, now seen corresponding path program 1 times [2022-11-16 12:01:40,374 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:01:40,374 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1386218968] [2022-11-16 12:01:40,375 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:01:40,376 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:01:40,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:01:41,472 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:01:41,472 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:01:41,473 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1386218968] [2022-11-16 12:01:41,474 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1386218968] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:01:41,474 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:01:41,474 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-16 12:01:41,476 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1058343580] [2022-11-16 12:01:41,476 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:01:41,487 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-16 12:01:41,487 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:01:41,539 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-16 12:01:41,543 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-11-16 12:01:41,550 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 83 out of 106 [2022-11-16 12:01:41,556 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 98 places, 86 transitions, 184 flow. Second operand has 7 states, 7 states have (on average 85.0) internal successors, (595), 7 states have internal predecessors, (595), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:01:41,560 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:01:41,560 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 83 of 106 [2022-11-16 12:01:41,561 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:01:42,189 INFO L130 PetriNetUnfolder]: 285/808 cut-off events. [2022-11-16 12:01:42,190 INFO L131 PetriNetUnfolder]: For 18/18 co-relation queries the response was YES. [2022-11-16 12:01:42,195 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1347 conditions, 808 events. 285/808 cut-off events. For 18/18 co-relation queries the response was YES. Maximal size of possible extension queue 65. Compared 4625 event pairs, 97 based on Foata normal form. 26/799 useless extension candidates. Maximal degree in co-relation 1308. Up to 211 conditions per place. [2022-11-16 12:01:42,199 INFO L137 encePairwiseOnDemand]: 94/106 looper letters, 25 selfloop transitions, 7 changer transitions 41/139 dead transitions. [2022-11-16 12:01:42,199 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 110 places, 139 transitions, 448 flow [2022-11-16 12:01:42,201 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-16 12:01:42,203 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2022-11-16 12:01:42,213 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1158 transitions. [2022-11-16 12:01:42,217 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8403483309143687 [2022-11-16 12:01:42,218 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 1158 transitions. [2022-11-16 12:01:42,218 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 1158 transitions. [2022-11-16 12:01:42,221 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:01:42,224 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 1158 transitions. [2022-11-16 12:01:42,232 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 89.07692307692308) internal successors, (1158), 13 states have internal predecessors, (1158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:01:42,242 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 106.0) internal successors, (1484), 14 states have internal predecessors, (1484), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:01:42,243 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 106.0) internal successors, (1484), 14 states have internal predecessors, (1484), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:01:42,245 INFO L175 Difference]: Start difference. First operand has 98 places, 86 transitions, 184 flow. Second operand 13 states and 1158 transitions. [2022-11-16 12:01:42,246 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 110 places, 139 transitions, 448 flow [2022-11-16 12:01:42,249 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 106 places, 139 transitions, 440 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-11-16 12:01:42,253 INFO L231 Difference]: Finished difference. Result has 118 places, 88 transitions, 258 flow [2022-11-16 12:01:42,255 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=106, PETRI_DIFFERENCE_MINUEND_FLOW=178, PETRI_DIFFERENCE_MINUEND_PLACES=94, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=85, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=78, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=258, PETRI_PLACES=118, PETRI_TRANSITIONS=88} [2022-11-16 12:01:42,259 INFO L288 CegarLoopForPetriNet]: 98 programPoint places, 20 predicate places. [2022-11-16 12:01:42,259 INFO L495 AbstractCegarLoop]: Abstraction has has 118 places, 88 transitions, 258 flow [2022-11-16 12:01:42,259 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 85.0) internal successors, (595), 7 states have internal predecessors, (595), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:01:42,260 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:01:42,260 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:01:42,260 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-16 12:01:42,260 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-11-16 12:01:42,261 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:01:42,261 INFO L85 PathProgramCache]: Analyzing trace with hash -1969588525, now seen corresponding path program 1 times [2022-11-16 12:01:42,261 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:01:42,261 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2000190643] [2022-11-16 12:01:42,262 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:01:42,262 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:01:42,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:01:42,676 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:01:42,676 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:01:42,677 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2000190643] [2022-11-16 12:01:42,678 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2000190643] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:01:42,681 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:01:42,682 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-16 12:01:42,682 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1465548840] [2022-11-16 12:01:42,683 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:01:42,685 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-16 12:01:42,686 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:01:42,687 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-16 12:01:42,687 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-11-16 12:01:42,689 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 83 out of 106 [2022-11-16 12:01:42,695 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 118 places, 88 transitions, 258 flow. Second operand has 7 states, 7 states have (on average 85.14285714285714) internal successors, (596), 7 states have internal predecessors, (596), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:01:42,695 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:01:42,696 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 83 of 106 [2022-11-16 12:01:42,696 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:01:43,125 INFO L130 PetriNetUnfolder]: 163/637 cut-off events. [2022-11-16 12:01:43,125 INFO L131 PetriNetUnfolder]: For 1130/1244 co-relation queries the response was YES. [2022-11-16 12:01:43,131 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1727 conditions, 637 events. 163/637 cut-off events. For 1130/1244 co-relation queries the response was YES. Maximal size of possible extension queue 43. Compared 3655 event pairs, 13 based on Foata normal form. 18/631 useless extension candidates. Maximal degree in co-relation 1674. Up to 130 conditions per place. [2022-11-16 12:01:43,136 INFO L137 encePairwiseOnDemand]: 94/106 looper letters, 23 selfloop transitions, 13 changer transitions 40/142 dead transitions. [2022-11-16 12:01:43,136 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 121 places, 142 transitions, 768 flow [2022-11-16 12:01:43,136 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-16 12:01:43,137 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2022-11-16 12:01:43,139 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1155 transitions. [2022-11-16 12:01:43,139 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8381712626995645 [2022-11-16 12:01:43,139 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 1155 transitions. [2022-11-16 12:01:43,140 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 1155 transitions. [2022-11-16 12:01:43,140 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:01:43,141 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 1155 transitions. [2022-11-16 12:01:43,143 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 88.84615384615384) internal successors, (1155), 13 states have internal predecessors, (1155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:01:43,147 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 106.0) internal successors, (1484), 14 states have internal predecessors, (1484), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:01:43,148 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 106.0) internal successors, (1484), 14 states have internal predecessors, (1484), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:01:43,148 INFO L175 Difference]: Start difference. First operand has 118 places, 88 transitions, 258 flow. Second operand 13 states and 1155 transitions. [2022-11-16 12:01:43,148 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 121 places, 142 transitions, 768 flow [2022-11-16 12:01:43,160 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 117 places, 142 transitions, 716 flow, removed 24 selfloop flow, removed 4 redundant places. [2022-11-16 12:01:43,163 INFO L231 Difference]: Finished difference. Result has 128 places, 93 transitions, 351 flow [2022-11-16 12:01:43,164 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=106, PETRI_DIFFERENCE_MINUEND_FLOW=244, PETRI_DIFFERENCE_MINUEND_PLACES=105, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=88, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=78, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=351, PETRI_PLACES=128, PETRI_TRANSITIONS=93} [2022-11-16 12:01:43,165 INFO L288 CegarLoopForPetriNet]: 98 programPoint places, 30 predicate places. [2022-11-16 12:01:43,165 INFO L495 AbstractCegarLoop]: Abstraction has has 128 places, 93 transitions, 351 flow [2022-11-16 12:01:43,166 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 85.14285714285714) internal successors, (596), 7 states have internal predecessors, (596), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:01:43,166 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:01:43,166 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:01:43,167 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-16 12:01:43,167 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-11-16 12:01:43,167 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:01:43,168 INFO L85 PathProgramCache]: Analyzing trace with hash -1081389422, now seen corresponding path program 1 times [2022-11-16 12:01:43,168 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:01:43,168 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2114023406] [2022-11-16 12:01:43,168 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:01:43,168 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:01:43,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:01:43,480 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:01:43,481 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:01:43,482 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2114023406] [2022-11-16 12:01:43,482 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2114023406] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:01:43,482 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:01:43,483 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-16 12:01:43,483 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2093812830] [2022-11-16 12:01:43,483 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:01:43,484 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-16 12:01:43,485 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:01:43,485 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-16 12:01:43,486 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-11-16 12:01:43,487 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 83 out of 106 [2022-11-16 12:01:43,488 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 128 places, 93 transitions, 351 flow. Second operand has 7 states, 7 states have (on average 85.28571428571429) internal successors, (597), 7 states have internal predecessors, (597), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:01:43,488 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:01:43,488 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 83 of 106 [2022-11-16 12:01:43,488 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:01:43,813 INFO L130 PetriNetUnfolder]: 94/411 cut-off events. [2022-11-16 12:01:43,813 INFO L131 PetriNetUnfolder]: For 1207/1266 co-relation queries the response was YES. [2022-11-16 12:01:43,816 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1290 conditions, 411 events. 94/411 cut-off events. For 1207/1266 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 1914 event pairs, 8 based on Foata normal form. 15/407 useless extension candidates. Maximal degree in co-relation 1223. Up to 99 conditions per place. [2022-11-16 12:01:43,821 INFO L137 encePairwiseOnDemand]: 96/106 looper letters, 26 selfloop transitions, 10 changer transitions 25/127 dead transitions. [2022-11-16 12:01:43,821 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 131 places, 127 transitions, 737 flow [2022-11-16 12:01:43,821 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-16 12:01:43,822 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2022-11-16 12:01:43,825 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1138 transitions. [2022-11-16 12:01:43,827 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8258345428156749 [2022-11-16 12:01:43,827 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 1138 transitions. [2022-11-16 12:01:43,827 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 1138 transitions. [2022-11-16 12:01:43,828 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:01:43,828 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 1138 transitions. [2022-11-16 12:01:43,830 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 87.53846153846153) internal successors, (1138), 13 states have internal predecessors, (1138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:01:43,833 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 106.0) internal successors, (1484), 14 states have internal predecessors, (1484), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:01:43,834 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 106.0) internal successors, (1484), 14 states have internal predecessors, (1484), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:01:43,834 INFO L175 Difference]: Start difference. First operand has 128 places, 93 transitions, 351 flow. Second operand 13 states and 1138 transitions. [2022-11-16 12:01:43,834 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 131 places, 127 transitions, 737 flow [2022-11-16 12:01:43,840 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 119 places, 127 transitions, 653 flow, removed 42 selfloop flow, removed 12 redundant places. [2022-11-16 12:01:43,843 INFO L231 Difference]: Finished difference. Result has 129 places, 93 transitions, 363 flow [2022-11-16 12:01:43,843 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=106, PETRI_DIFFERENCE_MINUEND_FLOW=321, PETRI_DIFFERENCE_MINUEND_PLACES=107, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=93, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=83, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=363, PETRI_PLACES=129, PETRI_TRANSITIONS=93} [2022-11-16 12:01:43,845 INFO L288 CegarLoopForPetriNet]: 98 programPoint places, 31 predicate places. [2022-11-16 12:01:43,846 INFO L495 AbstractCegarLoop]: Abstraction has has 129 places, 93 transitions, 363 flow [2022-11-16 12:01:43,846 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 85.28571428571429) internal successors, (597), 7 states have internal predecessors, (597), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:01:43,846 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:01:43,847 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:01:43,847 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-16 12:01:43,847 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-11-16 12:01:43,848 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:01:43,848 INFO L85 PathProgramCache]: Analyzing trace with hash -971600657, now seen corresponding path program 1 times [2022-11-16 12:01:43,848 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:01:43,848 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [730458311] [2022-11-16 12:01:43,848 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:01:43,848 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:01:43,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:01:44,149 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:01:44,149 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:01:44,149 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [730458311] [2022-11-16 12:01:44,150 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [730458311] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:01:44,150 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:01:44,150 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-16 12:01:44,150 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [268963601] [2022-11-16 12:01:44,150 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:01:44,153 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-16 12:01:44,157 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:01:44,157 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-16 12:01:44,158 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-11-16 12:01:44,159 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 83 out of 106 [2022-11-16 12:01:44,162 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 129 places, 93 transitions, 363 flow. Second operand has 7 states, 7 states have (on average 85.42857142857143) internal successors, (598), 7 states have internal predecessors, (598), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:01:44,162 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:01:44,162 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 83 of 106 [2022-11-16 12:01:44,162 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:01:44,396 INFO L130 PetriNetUnfolder]: 72/408 cut-off events. [2022-11-16 12:01:44,396 INFO L131 PetriNetUnfolder]: For 1136/1324 co-relation queries the response was YES. [2022-11-16 12:01:44,399 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1238 conditions, 408 events. 72/408 cut-off events. For 1136/1324 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 1971 event pairs, 22 based on Foata normal form. 9/399 useless extension candidates. Maximal degree in co-relation 1171. Up to 79 conditions per place. [2022-11-16 12:01:44,402 INFO L137 encePairwiseOnDemand]: 95/106 looper letters, 26 selfloop transitions, 12 changer transitions 17/121 dead transitions. [2022-11-16 12:01:44,402 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 129 places, 121 transitions, 706 flow [2022-11-16 12:01:44,402 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-16 12:01:44,403 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-11-16 12:01:44,404 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 881 transitions. [2022-11-16 12:01:44,405 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8311320754716981 [2022-11-16 12:01:44,405 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 881 transitions. [2022-11-16 12:01:44,405 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 881 transitions. [2022-11-16 12:01:44,406 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:01:44,406 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 881 transitions. [2022-11-16 12:01:44,408 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 88.1) internal successors, (881), 10 states have internal predecessors, (881), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:01:44,411 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 106.0) internal successors, (1166), 11 states have internal predecessors, (1166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:01:44,411 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 106.0) internal successors, (1166), 11 states have internal predecessors, (1166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:01:44,411 INFO L175 Difference]: Start difference. First operand has 129 places, 93 transitions, 363 flow. Second operand 10 states and 881 transitions. [2022-11-16 12:01:44,412 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 129 places, 121 transitions, 706 flow [2022-11-16 12:01:44,417 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 117 places, 121 transitions, 620 flow, removed 30 selfloop flow, removed 12 redundant places. [2022-11-16 12:01:44,419 INFO L231 Difference]: Finished difference. Result has 125 places, 95 transitions, 393 flow [2022-11-16 12:01:44,419 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=106, PETRI_DIFFERENCE_MINUEND_FLOW=321, PETRI_DIFFERENCE_MINUEND_PLACES=108, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=93, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=81, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=393, PETRI_PLACES=125, PETRI_TRANSITIONS=95} [2022-11-16 12:01:44,420 INFO L288 CegarLoopForPetriNet]: 98 programPoint places, 27 predicate places. [2022-11-16 12:01:44,420 INFO L495 AbstractCegarLoop]: Abstraction has has 125 places, 95 transitions, 393 flow [2022-11-16 12:01:44,421 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 85.42857142857143) internal successors, (598), 7 states have internal predecessors, (598), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:01:44,421 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:01:44,421 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:01:44,421 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-16 12:01:44,422 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-11-16 12:01:44,422 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:01:44,422 INFO L85 PathProgramCache]: Analyzing trace with hash 1604071953, now seen corresponding path program 1 times [2022-11-16 12:01:44,422 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:01:44,423 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1355300744] [2022-11-16 12:01:44,423 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:01:44,423 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:01:44,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:01:44,663 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:01:44,663 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:01:44,664 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1355300744] [2022-11-16 12:01:44,664 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1355300744] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:01:44,664 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:01:44,664 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-16 12:01:44,664 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1050445172] [2022-11-16 12:01:44,664 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:01:44,665 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-16 12:01:44,665 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:01:44,665 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-16 12:01:44,665 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2022-11-16 12:01:44,666 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 83 out of 106 [2022-11-16 12:01:44,667 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 125 places, 95 transitions, 393 flow. Second operand has 8 states, 8 states have (on average 85.125) internal successors, (681), 8 states have internal predecessors, (681), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:01:44,667 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:01:44,667 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 83 of 106 [2022-11-16 12:01:44,668 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:01:44,878 INFO L130 PetriNetUnfolder]: 69/405 cut-off events. [2022-11-16 12:01:44,878 INFO L131 PetriNetUnfolder]: For 1258/2113 co-relation queries the response was YES. [2022-11-16 12:01:44,880 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1262 conditions, 405 events. 69/405 cut-off events. For 1258/2113 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 2100 event pairs, 26 based on Foata normal form. 9/391 useless extension candidates. Maximal degree in co-relation 1195. Up to 67 conditions per place. [2022-11-16 12:01:44,881 INFO L137 encePairwiseOnDemand]: 94/106 looper letters, 22 selfloop transitions, 11 changer transitions 23/122 dead transitions. [2022-11-16 12:01:44,882 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 126 places, 122 transitions, 737 flow [2022-11-16 12:01:44,882 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-16 12:01:44,882 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-11-16 12:01:44,883 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 710 transitions. [2022-11-16 12:01:44,884 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8372641509433962 [2022-11-16 12:01:44,884 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 710 transitions. [2022-11-16 12:01:44,884 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 710 transitions. [2022-11-16 12:01:44,885 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:01:44,885 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 710 transitions. [2022-11-16 12:01:44,887 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 88.75) internal successors, (710), 8 states have internal predecessors, (710), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:01:44,889 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 106.0) internal successors, (954), 9 states have internal predecessors, (954), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:01:44,889 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 106.0) internal successors, (954), 9 states have internal predecessors, (954), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:01:44,889 INFO L175 Difference]: Start difference. First operand has 125 places, 95 transitions, 393 flow. Second operand 8 states and 710 transitions. [2022-11-16 12:01:44,890 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 126 places, 122 transitions, 737 flow [2022-11-16 12:01:44,894 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 119 places, 122 transitions, 682 flow, removed 19 selfloop flow, removed 7 redundant places. [2022-11-16 12:01:44,896 INFO L231 Difference]: Finished difference. Result has 123 places, 92 transitions, 368 flow [2022-11-16 12:01:44,897 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=106, PETRI_DIFFERENCE_MINUEND_FLOW=363, PETRI_DIFFERENCE_MINUEND_PLACES=112, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=95, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=84, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=368, PETRI_PLACES=123, PETRI_TRANSITIONS=92} [2022-11-16 12:01:44,898 INFO L288 CegarLoopForPetriNet]: 98 programPoint places, 25 predicate places. [2022-11-16 12:01:44,898 INFO L495 AbstractCegarLoop]: Abstraction has has 123 places, 92 transitions, 368 flow [2022-11-16 12:01:44,898 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 85.125) internal successors, (681), 8 states have internal predecessors, (681), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:01:44,898 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:01:44,899 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:01:44,899 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-16 12:01:44,899 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-11-16 12:01:44,900 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:01:44,900 INFO L85 PathProgramCache]: Analyzing trace with hash -1882568755, now seen corresponding path program 2 times [2022-11-16 12:01:44,900 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:01:44,900 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [288606870] [2022-11-16 12:01:44,900 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:01:44,901 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:01:44,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:01:45,135 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:01:45,135 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:01:45,135 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [288606870] [2022-11-16 12:01:45,135 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [288606870] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:01:45,136 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:01:45,136 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-16 12:01:45,136 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [390403867] [2022-11-16 12:01:45,136 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:01:45,137 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-16 12:01:45,137 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:01:45,137 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-16 12:01:45,137 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-11-16 12:01:45,139 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 81 out of 106 [2022-11-16 12:01:45,139 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 123 places, 92 transitions, 368 flow. Second operand has 8 states, 8 states have (on average 83.25) internal successors, (666), 8 states have internal predecessors, (666), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:01:45,140 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:01:45,140 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 81 of 106 [2022-11-16 12:01:45,140 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:01:45,424 INFO L130 PetriNetUnfolder]: 128/540 cut-off events. [2022-11-16 12:01:45,424 INFO L131 PetriNetUnfolder]: For 1891/2722 co-relation queries the response was YES. [2022-11-16 12:01:45,426 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1696 conditions, 540 events. 128/540 cut-off events. For 1891/2722 co-relation queries the response was YES. Maximal size of possible extension queue 35. Compared 3137 event pairs, 16 based on Foata normal form. 15/538 useless extension candidates. Maximal degree in co-relation 1626. Up to 84 conditions per place. [2022-11-16 12:01:45,428 INFO L137 encePairwiseOnDemand]: 94/106 looper letters, 31 selfloop transitions, 10 changer transitions 45/150 dead transitions. [2022-11-16 12:01:45,429 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 130 places, 150 transitions, 1098 flow [2022-11-16 12:01:45,429 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-16 12:01:45,429 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2022-11-16 12:01:45,431 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 957 transitions. [2022-11-16 12:01:45,432 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8207547169811321 [2022-11-16 12:01:45,432 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 957 transitions. [2022-11-16 12:01:45,433 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 957 transitions. [2022-11-16 12:01:45,433 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:01:45,433 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 957 transitions. [2022-11-16 12:01:45,436 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 87.0) internal successors, (957), 11 states have internal predecessors, (957), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:01:45,439 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 106.0) internal successors, (1272), 12 states have internal predecessors, (1272), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:01:45,440 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 106.0) internal successors, (1272), 12 states have internal predecessors, (1272), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:01:45,440 INFO L175 Difference]: Start difference. First operand has 123 places, 92 transitions, 368 flow. Second operand 11 states and 957 transitions. [2022-11-16 12:01:45,440 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 130 places, 150 transitions, 1098 flow [2022-11-16 12:01:45,446 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 121 places, 150 transitions, 924 flow, removed 33 selfloop flow, removed 9 redundant places. [2022-11-16 12:01:45,449 INFO L231 Difference]: Finished difference. Result has 129 places, 92 transitions, 356 flow [2022-11-16 12:01:45,450 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=106, PETRI_DIFFERENCE_MINUEND_FLOW=313, PETRI_DIFFERENCE_MINUEND_PLACES=111, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=92, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=82, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=356, PETRI_PLACES=129, PETRI_TRANSITIONS=92} [2022-11-16 12:01:45,452 INFO L288 CegarLoopForPetriNet]: 98 programPoint places, 31 predicate places. [2022-11-16 12:01:45,453 INFO L495 AbstractCegarLoop]: Abstraction has has 129 places, 92 transitions, 356 flow [2022-11-16 12:01:45,453 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 83.25) internal successors, (666), 8 states have internal predecessors, (666), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:01:45,453 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:01:45,454 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:01:45,454 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-16 12:01:45,454 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-11-16 12:01:45,455 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:01:45,455 INFO L85 PathProgramCache]: Analyzing trace with hash -218457066, now seen corresponding path program 1 times [2022-11-16 12:01:45,455 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:01:45,455 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1654777973] [2022-11-16 12:01:45,455 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:01:45,456 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:01:45,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:01:45,715 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:01:45,715 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:01:45,715 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1654777973] [2022-11-16 12:01:45,716 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1654777973] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:01:45,716 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:01:45,716 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-16 12:01:45,721 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [632563717] [2022-11-16 12:01:45,721 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:01:45,721 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-16 12:01:45,721 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:01:45,722 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-16 12:01:45,722 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-16 12:01:45,723 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 87 out of 106 [2022-11-16 12:01:45,724 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 129 places, 92 transitions, 356 flow. Second operand has 6 states, 6 states have (on average 88.83333333333333) internal successors, (533), 6 states have internal predecessors, (533), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:01:45,724 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:01:45,724 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 87 of 106 [2022-11-16 12:01:45,724 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:01:46,304 INFO L130 PetriNetUnfolder]: 1341/2737 cut-off events. [2022-11-16 12:01:46,304 INFO L131 PetriNetUnfolder]: For 1505/1572 co-relation queries the response was YES. [2022-11-16 12:01:46,317 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5610 conditions, 2737 events. 1341/2737 cut-off events. For 1505/1572 co-relation queries the response was YES. Maximal size of possible extension queue 323. Compared 20801 event pairs, 87 based on Foata normal form. 0/2422 useless extension candidates. Maximal degree in co-relation 5544. Up to 885 conditions per place. [2022-11-16 12:01:46,327 INFO L137 encePairwiseOnDemand]: 95/106 looper letters, 35 selfloop transitions, 20 changer transitions 0/131 dead transitions. [2022-11-16 12:01:46,327 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 132 places, 131 transitions, 548 flow [2022-11-16 12:01:46,328 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-16 12:01:46,328 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-11-16 12:01:46,330 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 927 transitions. [2022-11-16 12:01:46,330 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8745283018867924 [2022-11-16 12:01:46,330 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 927 transitions. [2022-11-16 12:01:46,331 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 927 transitions. [2022-11-16 12:01:46,331 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:01:46,331 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 927 transitions. [2022-11-16 12:01:46,334 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 92.7) internal successors, (927), 10 states have internal predecessors, (927), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:01:46,336 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 106.0) internal successors, (1166), 11 states have internal predecessors, (1166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:01:46,337 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 106.0) internal successors, (1166), 11 states have internal predecessors, (1166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:01:46,337 INFO L175 Difference]: Start difference. First operand has 129 places, 92 transitions, 356 flow. Second operand 10 states and 927 transitions. [2022-11-16 12:01:46,337 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 132 places, 131 transitions, 548 flow [2022-11-16 12:01:46,345 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 121 places, 131 transitions, 510 flow, removed 8 selfloop flow, removed 11 redundant places. [2022-11-16 12:01:46,347 INFO L231 Difference]: Finished difference. Result has 127 places, 110 transitions, 461 flow [2022-11-16 12:01:46,348 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=106, PETRI_DIFFERENCE_MINUEND_FLOW=318, PETRI_DIFFERENCE_MINUEND_PLACES=112, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=92, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=82, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=461, PETRI_PLACES=127, PETRI_TRANSITIONS=110} [2022-11-16 12:01:46,349 INFO L288 CegarLoopForPetriNet]: 98 programPoint places, 29 predicate places. [2022-11-16 12:01:46,349 INFO L495 AbstractCegarLoop]: Abstraction has has 127 places, 110 transitions, 461 flow [2022-11-16 12:01:46,349 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 88.83333333333333) internal successors, (533), 6 states have internal predecessors, (533), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:01:46,349 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:01:46,350 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:01:46,350 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-16 12:01:46,350 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-11-16 12:01:46,350 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:01:46,350 INFO L85 PathProgramCache]: Analyzing trace with hash 982699072, now seen corresponding path program 1 times [2022-11-16 12:01:46,351 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:01:46,351 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1014614800] [2022-11-16 12:01:46,351 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:01:46,351 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:01:46,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:01:46,573 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:01:46,577 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:01:46,578 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1014614800] [2022-11-16 12:01:46,578 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1014614800] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:01:46,578 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:01:46,578 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-16 12:01:46,578 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1975381799] [2022-11-16 12:01:46,578 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:01:46,579 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-16 12:01:46,579 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:01:46,579 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-16 12:01:46,579 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-11-16 12:01:46,580 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 87 out of 106 [2022-11-16 12:01:46,581 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 127 places, 110 transitions, 461 flow. Second operand has 7 states, 7 states have (on average 88.71428571428571) internal successors, (621), 7 states have internal predecessors, (621), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:01:46,581 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:01:46,581 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 87 of 106 [2022-11-16 12:01:46,582 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:01:47,284 INFO L130 PetriNetUnfolder]: 1474/3021 cut-off events. [2022-11-16 12:01:47,284 INFO L131 PetriNetUnfolder]: For 9072/9782 co-relation queries the response was YES. [2022-11-16 12:01:47,297 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11373 conditions, 3021 events. 1474/3021 cut-off events. For 9072/9782 co-relation queries the response was YES. Maximal size of possible extension queue 366. Compared 23783 event pairs, 33 based on Foata normal form. 160/2953 useless extension candidates. Maximal degree in co-relation 11309. Up to 1593 conditions per place. [2022-11-16 12:01:47,316 INFO L137 encePairwiseOnDemand]: 95/106 looper letters, 41 selfloop transitions, 38 changer transitions 0/155 dead transitions. [2022-11-16 12:01:47,316 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 139 places, 155 transitions, 911 flow [2022-11-16 12:01:47,316 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-16 12:01:47,316 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2022-11-16 12:01:47,318 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1206 transitions. [2022-11-16 12:01:47,319 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8751814223512336 [2022-11-16 12:01:47,319 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 1206 transitions. [2022-11-16 12:01:47,319 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 1206 transitions. [2022-11-16 12:01:47,320 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:01:47,320 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 1206 transitions. [2022-11-16 12:01:47,323 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 92.76923076923077) internal successors, (1206), 13 states have internal predecessors, (1206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:01:47,325 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 106.0) internal successors, (1484), 14 states have internal predecessors, (1484), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:01:47,326 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 106.0) internal successors, (1484), 14 states have internal predecessors, (1484), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:01:47,327 INFO L175 Difference]: Start difference. First operand has 127 places, 110 transitions, 461 flow. Second operand 13 states and 1206 transitions. [2022-11-16 12:01:47,327 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 139 places, 155 transitions, 911 flow [2022-11-16 12:01:47,348 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 138 places, 155 transitions, 909 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-16 12:01:47,351 INFO L231 Difference]: Finished difference. Result has 144 places, 130 transitions, 752 flow [2022-11-16 12:01:47,351 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=106, PETRI_DIFFERENCE_MINUEND_FLOW=459, PETRI_DIFFERENCE_MINUEND_PLACES=126, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=110, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=84, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=752, PETRI_PLACES=144, PETRI_TRANSITIONS=130} [2022-11-16 12:01:47,354 INFO L288 CegarLoopForPetriNet]: 98 programPoint places, 46 predicate places. [2022-11-16 12:01:47,354 INFO L495 AbstractCegarLoop]: Abstraction has has 144 places, 130 transitions, 752 flow [2022-11-16 12:01:47,354 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 88.71428571428571) internal successors, (621), 7 states have internal predecessors, (621), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:01:47,355 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:01:47,355 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:01:47,355 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-16 12:01:47,355 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-11-16 12:01:47,355 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:01:47,356 INFO L85 PathProgramCache]: Analyzing trace with hash -472982899, now seen corresponding path program 1 times [2022-11-16 12:01:47,356 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:01:47,356 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1982013228] [2022-11-16 12:01:47,356 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:01:47,356 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:01:47,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:01:47,597 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:01:47,597 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:01:47,597 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1982013228] [2022-11-16 12:01:47,598 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1982013228] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:01:47,598 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:01:47,598 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-16 12:01:47,598 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [802527138] [2022-11-16 12:01:47,598 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:01:47,599 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-16 12:01:47,599 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:01:47,600 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-16 12:01:47,600 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-11-16 12:01:47,601 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 87 out of 106 [2022-11-16 12:01:47,602 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 144 places, 130 transitions, 752 flow. Second operand has 8 states, 8 states have (on average 88.625) internal successors, (709), 8 states have internal predecessors, (709), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:01:47,602 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:01:47,603 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 87 of 106 [2022-11-16 12:01:47,603 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:01:48,502 INFO L130 PetriNetUnfolder]: 1444/2930 cut-off events. [2022-11-16 12:01:48,503 INFO L131 PetriNetUnfolder]: For 26015/28496 co-relation queries the response was YES. [2022-11-16 12:01:48,519 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16000 conditions, 2930 events. 1444/2930 cut-off events. For 26015/28496 co-relation queries the response was YES. Maximal size of possible extension queue 381. Compared 23310 event pairs, 5 based on Foata normal form. 269/2966 useless extension candidates. Maximal degree in co-relation 15928. Up to 1570 conditions per place. [2022-11-16 12:01:48,533 INFO L137 encePairwiseOnDemand]: 95/106 looper letters, 36 selfloop transitions, 58 changer transitions 12/182 dead transitions. [2022-11-16 12:01:48,533 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 159 places, 182 transitions, 1486 flow [2022-11-16 12:01:48,533 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-11-16 12:01:48,534 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2022-11-16 12:01:48,538 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 1485 transitions. [2022-11-16 12:01:48,539 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8755896226415094 [2022-11-16 12:01:48,539 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 1485 transitions. [2022-11-16 12:01:48,539 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 1485 transitions. [2022-11-16 12:01:48,541 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:01:48,541 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 1485 transitions. [2022-11-16 12:01:48,546 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 92.8125) internal successors, (1485), 16 states have internal predecessors, (1485), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:01:48,550 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 106.0) internal successors, (1802), 17 states have internal predecessors, (1802), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:01:48,551 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 106.0) internal successors, (1802), 17 states have internal predecessors, (1802), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:01:48,552 INFO L175 Difference]: Start difference. First operand has 144 places, 130 transitions, 752 flow. Second operand 16 states and 1485 transitions. [2022-11-16 12:01:48,552 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 159 places, 182 transitions, 1486 flow [2022-11-16 12:01:48,686 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 155 places, 182 transitions, 1383 flow, removed 42 selfloop flow, removed 4 redundant places. [2022-11-16 12:01:48,690 INFO L231 Difference]: Finished difference. Result has 159 places, 156 transitions, 1118 flow [2022-11-16 12:01:48,691 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=106, PETRI_DIFFERENCE_MINUEND_FLOW=657, PETRI_DIFFERENCE_MINUEND_PLACES=140, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=130, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=86, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=1118, PETRI_PLACES=159, PETRI_TRANSITIONS=156} [2022-11-16 12:01:48,692 INFO L288 CegarLoopForPetriNet]: 98 programPoint places, 61 predicate places. [2022-11-16 12:01:48,692 INFO L495 AbstractCegarLoop]: Abstraction has has 159 places, 156 transitions, 1118 flow [2022-11-16 12:01:48,692 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 88.625) internal successors, (709), 8 states have internal predecessors, (709), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:01:48,692 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:01:48,693 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:01:48,693 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-16 12:01:48,693 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-11-16 12:01:48,693 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:01:48,693 INFO L85 PathProgramCache]: Analyzing trace with hash 635627538, now seen corresponding path program 1 times [2022-11-16 12:01:48,694 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:01:48,694 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [392577533] [2022-11-16 12:01:48,694 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:01:48,694 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:01:48,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:01:48,954 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:01:48,954 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:01:48,954 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [392577533] [2022-11-16 12:01:48,955 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [392577533] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:01:48,955 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:01:48,955 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-16 12:01:48,955 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1312343717] [2022-11-16 12:01:48,955 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:01:48,956 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-16 12:01:48,956 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:01:48,957 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-16 12:01:48,958 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2022-11-16 12:01:48,959 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 83 out of 106 [2022-11-16 12:01:48,960 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 159 places, 156 transitions, 1118 flow. Second operand has 8 states, 8 states have (on average 85.25) internal successors, (682), 8 states have internal predecessors, (682), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:01:48,960 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:01:48,960 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 83 of 106 [2022-11-16 12:01:48,961 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:01:49,514 INFO L130 PetriNetUnfolder]: 933/2679 cut-off events. [2022-11-16 12:01:49,515 INFO L131 PetriNetUnfolder]: For 19069/19555 co-relation queries the response was YES. [2022-11-16 12:01:49,531 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11786 conditions, 2679 events. 933/2679 cut-off events. For 19069/19555 co-relation queries the response was YES. Maximal size of possible extension queue 339. Compared 25457 event pairs, 5 based on Foata normal form. 8/2523 useless extension candidates. Maximal degree in co-relation 11706. Up to 875 conditions per place. [2022-11-16 12:01:49,546 INFO L137 encePairwiseOnDemand]: 95/106 looper letters, 25 selfloop transitions, 10 changer transitions 7/172 dead transitions. [2022-11-16 12:01:49,546 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 167 places, 172 transitions, 1298 flow [2022-11-16 12:01:49,547 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-16 12:01:49,547 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-11-16 12:01:49,548 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 789 transitions. [2022-11-16 12:01:49,548 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8270440251572327 [2022-11-16 12:01:49,548 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 789 transitions. [2022-11-16 12:01:49,548 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 789 transitions. [2022-11-16 12:01:49,549 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:01:49,549 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 789 transitions. [2022-11-16 12:01:49,551 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 87.66666666666667) internal successors, (789), 9 states have internal predecessors, (789), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:01:49,553 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 106.0) internal successors, (1060), 10 states have internal predecessors, (1060), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:01:49,554 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 106.0) internal successors, (1060), 10 states have internal predecessors, (1060), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:01:49,554 INFO L175 Difference]: Start difference. First operand has 159 places, 156 transitions, 1118 flow. Second operand 9 states and 789 transitions. [2022-11-16 12:01:49,554 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 167 places, 172 transitions, 1298 flow [2022-11-16 12:01:49,887 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 156 places, 172 transitions, 985 flow, removed 114 selfloop flow, removed 11 redundant places. [2022-11-16 12:01:49,890 INFO L231 Difference]: Finished difference. Result has 160 places, 156 transitions, 834 flow [2022-11-16 12:01:49,890 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=106, PETRI_DIFFERENCE_MINUEND_FLOW=805, PETRI_DIFFERENCE_MINUEND_PLACES=148, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=156, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=146, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=834, PETRI_PLACES=160, PETRI_TRANSITIONS=156} [2022-11-16 12:01:49,891 INFO L288 CegarLoopForPetriNet]: 98 programPoint places, 62 predicate places. [2022-11-16 12:01:49,891 INFO L495 AbstractCegarLoop]: Abstraction has has 160 places, 156 transitions, 834 flow [2022-11-16 12:01:49,891 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 85.25) internal successors, (682), 8 states have internal predecessors, (682), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:01:49,891 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:01:49,892 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:01:49,892 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-16 12:01:49,892 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-11-16 12:01:49,892 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:01:49,893 INFO L85 PathProgramCache]: Analyzing trace with hash 75932948, now seen corresponding path program 2 times [2022-11-16 12:01:49,893 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:01:49,893 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [272414104] [2022-11-16 12:01:49,893 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:01:49,893 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:01:49,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:01:50,114 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:01:50,114 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:01:50,114 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [272414104] [2022-11-16 12:01:50,115 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [272414104] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:01:50,115 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:01:50,115 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-11-16 12:01:50,115 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [89049530] [2022-11-16 12:01:50,115 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:01:50,116 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-16 12:01:50,116 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:01:50,117 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-16 12:01:50,117 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2022-11-16 12:01:50,118 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 87 out of 106 [2022-11-16 12:01:50,119 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 160 places, 156 transitions, 834 flow. Second operand has 9 states, 9 states have (on average 88.55555555555556) internal successors, (797), 9 states have internal predecessors, (797), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:01:50,119 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:01:50,120 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 87 of 106 [2022-11-16 12:01:50,120 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:01:51,061 INFO L130 PetriNetUnfolder]: 1478/3174 cut-off events. [2022-11-16 12:01:51,061 INFO L131 PetriNetUnfolder]: For 6418/7231 co-relation queries the response was YES. [2022-11-16 12:01:51,079 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11228 conditions, 3174 events. 1478/3174 cut-off events. For 6418/7231 co-relation queries the response was YES. Maximal size of possible extension queue 456. Compared 27825 event pairs, 3 based on Foata normal form. 264/3192 useless extension candidates. Maximal degree in co-relation 11194. Up to 472 conditions per place. [2022-11-16 12:01:51,085 INFO L137 encePairwiseOnDemand]: 95/106 looper letters, 25 selfloop transitions, 57 changer transitions 37/195 dead transitions. [2022-11-16 12:01:51,086 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 175 places, 195 transitions, 1327 flow [2022-11-16 12:01:51,086 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-11-16 12:01:51,086 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2022-11-16 12:01:51,088 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 1743 transitions. [2022-11-16 12:01:51,089 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.865441906653426 [2022-11-16 12:01:51,090 INFO L72 ComplementDD]: Start complementDD. Operand 19 states and 1743 transitions. [2022-11-16 12:01:51,090 INFO L73 IsDeterministic]: Start isDeterministic. Operand 19 states and 1743 transitions. [2022-11-16 12:01:51,091 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:01:51,091 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 19 states and 1743 transitions. [2022-11-16 12:01:51,096 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 20 states, 19 states have (on average 91.73684210526316) internal successors, (1743), 19 states have internal predecessors, (1743), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:01:51,100 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 20 states, 20 states have (on average 106.0) internal successors, (2120), 20 states have internal predecessors, (2120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:01:51,101 INFO L81 ComplementDD]: Finished complementDD. Result has 20 states, 20 states have (on average 106.0) internal successors, (2120), 20 states have internal predecessors, (2120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:01:51,101 INFO L175 Difference]: Start difference. First operand has 160 places, 156 transitions, 834 flow. Second operand 19 states and 1743 transitions. [2022-11-16 12:01:51,101 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 175 places, 195 transitions, 1327 flow [2022-11-16 12:01:51,222 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 166 places, 195 transitions, 1276 flow, removed 12 selfloop flow, removed 9 redundant places. [2022-11-16 12:01:51,225 INFO L231 Difference]: Finished difference. Result has 172 places, 147 transitions, 857 flow [2022-11-16 12:01:51,226 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=106, PETRI_DIFFERENCE_MINUEND_FLOW=783, PETRI_DIFFERENCE_MINUEND_PLACES=148, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=156, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=57, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=99, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=857, PETRI_PLACES=172, PETRI_TRANSITIONS=147} [2022-11-16 12:01:51,226 INFO L288 CegarLoopForPetriNet]: 98 programPoint places, 74 predicate places. [2022-11-16 12:01:51,226 INFO L495 AbstractCegarLoop]: Abstraction has has 172 places, 147 transitions, 857 flow [2022-11-16 12:01:51,227 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 88.55555555555556) internal successors, (797), 9 states have internal predecessors, (797), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:01:51,227 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:01:51,227 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:01:51,227 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-16 12:01:51,228 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-11-16 12:01:51,228 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:01:51,228 INFO L85 PathProgramCache]: Analyzing trace with hash 697421419, now seen corresponding path program 1 times [2022-11-16 12:01:51,228 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:01:51,228 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [9412297] [2022-11-16 12:01:51,228 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:01:51,229 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:01:51,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:01:51,422 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:01:51,422 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:01:51,423 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [9412297] [2022-11-16 12:01:51,423 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [9412297] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:01:51,423 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:01:51,423 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-16 12:01:51,424 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [280535775] [2022-11-16 12:01:51,424 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:01:51,424 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-16 12:01:51,424 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:01:51,425 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-16 12:01:51,425 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-16 12:01:51,426 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 87 out of 106 [2022-11-16 12:01:51,427 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 172 places, 147 transitions, 857 flow. Second operand has 7 states, 7 states have (on average 89.14285714285714) internal successors, (624), 7 states have internal predecessors, (624), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:01:51,428 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:01:51,428 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 87 of 106 [2022-11-16 12:01:51,428 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:01:52,031 INFO L130 PetriNetUnfolder]: 954/2812 cut-off events. [2022-11-16 12:01:52,031 INFO L131 PetriNetUnfolder]: For 6461/6719 co-relation queries the response was YES. [2022-11-16 12:01:52,050 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8588 conditions, 2812 events. 954/2812 cut-off events. For 6461/6719 co-relation queries the response was YES. Maximal size of possible extension queue 401. Compared 28490 event pairs, 1 based on Foata normal form. 3/2621 useless extension candidates. Maximal degree in co-relation 8508. Up to 347 conditions per place. [2022-11-16 12:01:52,054 INFO L137 encePairwiseOnDemand]: 100/106 looper letters, 0 selfloop transitions, 0 changer transitions 150/150 dead transitions. [2022-11-16 12:01:52,054 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 172 places, 150 transitions, 922 flow [2022-11-16 12:01:52,054 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-16 12:01:52,054 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-16 12:01:52,055 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 629 transitions. [2022-11-16 12:01:52,056 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8477088948787062 [2022-11-16 12:01:52,056 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 629 transitions. [2022-11-16 12:01:52,056 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 629 transitions. [2022-11-16 12:01:52,057 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:01:52,057 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 629 transitions. [2022-11-16 12:01:52,059 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 89.85714285714286) internal successors, (629), 7 states have internal predecessors, (629), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:01:52,060 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 106.0) internal successors, (848), 8 states have internal predecessors, (848), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:01:52,061 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 106.0) internal successors, (848), 8 states have internal predecessors, (848), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:01:52,061 INFO L175 Difference]: Start difference. First operand has 172 places, 147 transitions, 857 flow. Second operand 7 states and 629 transitions. [2022-11-16 12:01:52,061 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 172 places, 150 transitions, 922 flow [2022-11-16 12:01:52,195 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 149 places, 150 transitions, 749 flow, removed 19 selfloop flow, removed 23 redundant places. [2022-11-16 12:01:52,197 INFO L231 Difference]: Finished difference. Result has 149 places, 0 transitions, 0 flow [2022-11-16 12:01:52,197 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=106, PETRI_DIFFERENCE_MINUEND_FLOW=686, PETRI_DIFFERENCE_MINUEND_PLACES=143, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=145, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=145, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=0, PETRI_PLACES=149, PETRI_TRANSITIONS=0} [2022-11-16 12:01:52,198 INFO L288 CegarLoopForPetriNet]: 98 programPoint places, 51 predicate places. [2022-11-16 12:01:52,198 INFO L495 AbstractCegarLoop]: Abstraction has has 149 places, 0 transitions, 0 flow [2022-11-16 12:01:52,199 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 89.14285714285714) internal successors, (624), 7 states have internal predecessors, (624), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:01:52,202 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (4 of 5 remaining) [2022-11-16 12:01:52,202 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (3 of 5 remaining) [2022-11-16 12:01:52,203 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 5 remaining) [2022-11-16 12:01:52,203 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 5 remaining) [2022-11-16 12:01:52,203 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 5 remaining) [2022-11-16 12:01:52,204 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-11-16 12:01:52,204 INFO L444 BasicCegarLoop]: Path program histogram: [2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:01:52,208 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-11-16 12:01:52,208 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-16 12:01:52,217 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.11 12:01:52 BasicIcfg [2022-11-16 12:01:52,217 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-16 12:01:52,218 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-16 12:01:52,218 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-16 12:01:52,218 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-16 12:01:52,219 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 12:01:39" (3/4) ... [2022-11-16 12:01:52,222 INFO L137 WitnessPrinter]: Generating witness for correct program [2022-11-16 12:01:52,229 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure P0 [2022-11-16 12:01:52,230 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure P1 [2022-11-16 12:01:52,230 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure P2 [2022-11-16 12:01:52,230 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure P3 [2022-11-16 12:01:52,237 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 19 nodes and edges [2022-11-16 12:01:52,238 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2022-11-16 12:01:52,238 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2022-11-16 12:01:52,238 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2022-11-16 12:01:52,281 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40c08481-5f88-40a4-ac6e-975f110d3b50/bin/uautomizer-tPACEb0tL8/witness.graphml [2022-11-16 12:01:52,281 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-16 12:01:52,282 INFO L158 Benchmark]: Toolchain (without parser) took 13500.84ms. Allocated memory was 140.5MB in the beginning and 570.4MB in the end (delta: 429.9MB). Free memory was 102.7MB in the beginning and 332.7MB in the end (delta: -230.0MB). Peak memory consumption was 199.3MB. Max. memory is 16.1GB. [2022-11-16 12:01:52,283 INFO L158 Benchmark]: CDTParser took 0.28ms. Allocated memory is still 140.5MB. Free memory is still 121.2MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-16 12:01:52,283 INFO L158 Benchmark]: CACSL2BoogieTranslator took 600.12ms. Allocated memory is still 140.5MB. Free memory was 102.5MB in the beginning and 106.5MB in the end (delta: -4.0MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-11-16 12:01:52,283 INFO L158 Benchmark]: Boogie Procedure Inliner took 68.71ms. Allocated memory is still 140.5MB. Free memory was 106.5MB in the beginning and 104.3MB in the end (delta: 2.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-16 12:01:52,284 INFO L158 Benchmark]: Boogie Preprocessor took 52.33ms. Allocated memory is still 140.5MB. Free memory was 104.3MB in the beginning and 102.8MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-16 12:01:52,284 INFO L158 Benchmark]: RCFGBuilder took 456.97ms. Allocated memory is still 140.5MB. Free memory was 102.8MB in the beginning and 88.6MB in the end (delta: 14.2MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2022-11-16 12:01:52,285 INFO L158 Benchmark]: TraceAbstraction took 12250.95ms. Allocated memory was 140.5MB in the beginning and 570.4MB in the end (delta: 429.9MB). Free memory was 87.6MB in the beginning and 334.8MB in the end (delta: -247.2MB). Peak memory consumption was 184.8MB. Max. memory is 16.1GB. [2022-11-16 12:01:52,285 INFO L158 Benchmark]: Witness Printer took 63.65ms. Allocated memory is still 570.4MB. Free memory was 334.8MB in the beginning and 332.7MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-16 12:01:52,287 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.28ms. Allocated memory is still 140.5MB. Free memory is still 121.2MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 600.12ms. Allocated memory is still 140.5MB. Free memory was 102.5MB in the beginning and 106.5MB in the end (delta: -4.0MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 68.71ms. Allocated memory is still 140.5MB. Free memory was 106.5MB in the beginning and 104.3MB in the end (delta: 2.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 52.33ms. Allocated memory is still 140.5MB. Free memory was 104.3MB in the beginning and 102.8MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 456.97ms. Allocated memory is still 140.5MB. Free memory was 102.8MB in the beginning and 88.6MB in the end (delta: 14.2MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * TraceAbstraction took 12250.95ms. Allocated memory was 140.5MB in the beginning and 570.4MB in the end (delta: 429.9MB). Free memory was 87.6MB in the beginning and 334.8MB in the end (delta: -247.2MB). Peak memory consumption was 184.8MB. Max. memory is 16.1GB. * Witness Printer took 63.65ms. Allocated memory is still 570.4MB. Free memory was 334.8MB in the beginning and 332.7MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 18]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 9 procedures, 135 locations, 5 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.1s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 12.0s, OverallIterations: 12, TraceHistogramMax: 1, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 7.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 766 SdHoareTripleChecker+Valid, 1.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 766 mSDsluCounter, 786 SdHoareTripleChecker+Invalid, 0.8s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 606 mSDsCounter, 64 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 960 IncrementalHoareTripleChecker+Invalid, 1024 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 64 mSolverCounterUnsat, 180 mSDtfsCounter, 960 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 176 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 151 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 286 ImplicationChecksByTransitivity, 1.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1118occurred in iteration=9, InterpolantAutomatonStates: 142, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 3.4s InterpolantComputationTime, 832 NumberOfCodeBlocks, 832 NumberOfCodeBlocksAsserted, 12 NumberOfCheckSat, 820 ConstructedInterpolants, 0 QuantifiedInterpolants, 3520 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 12 InterpolantComputations, 12 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2022-11-16 12:01:52,319 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40c08481-5f88-40a4-ac6e-975f110d3b50/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE