./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/pthread/triangular-longer-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 6b4ec56b 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_27cf5266-8cde-4ea0-9b5b-fb69db61a10b/bin/uautomizer-ug76WZFUDN/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27cf5266-8cde-4ea0-9b5b-fb69db61a10b/bin/uautomizer-ug76WZFUDN/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27cf5266-8cde-4ea0-9b5b-fb69db61a10b/bin/uautomizer-ug76WZFUDN/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27cf5266-8cde-4ea0-9b5b-fb69db61a10b/bin/uautomizer-ug76WZFUDN/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread/triangular-longer-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27cf5266-8cde-4ea0-9b5b-fb69db61a10b/bin/uautomizer-ug76WZFUDN/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27cf5266-8cde-4ea0-9b5b-fb69db61a10b/bin/uautomizer-ug76WZFUDN --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 1e30b67a045ce6921ac9aa6cdcebddb50c3d7d787a6b9dd7b66c9173f916fde4 --- 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-6b4ec56 [2022-11-20 11:46:44,704 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-20 11:46:44,708 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-20 11:46:44,764 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-20 11:46:44,766 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-20 11:46:44,771 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-20 11:46:44,775 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-20 11:46:44,780 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-20 11:46:44,783 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-20 11:46:44,790 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-20 11:46:44,792 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-20 11:46:44,794 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-20 11:46:44,796 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-20 11:46:44,799 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-20 11:46:44,801 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-20 11:46:44,807 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-20 11:46:44,809 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-20 11:46:44,810 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-20 11:46:44,813 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-20 11:46:44,821 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-20 11:46:44,824 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-20 11:46:44,827 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-20 11:46:44,829 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-20 11:46:44,830 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-20 11:46:44,843 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-20 11:46:44,844 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-20 11:46:44,844 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-20 11:46:44,847 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-20 11:46:44,848 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-20 11:46:44,849 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-20 11:46:44,849 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-20 11:46:44,851 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-20 11:46:44,853 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-20 11:46:44,854 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-20 11:46:44,858 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-20 11:46:44,858 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-20 11:46:44,859 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-20 11:46:44,860 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-20 11:46:44,860 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-20 11:46:44,863 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-20 11:46:44,864 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-20 11:46:44,865 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27cf5266-8cde-4ea0-9b5b-fb69db61a10b/bin/uautomizer-ug76WZFUDN/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-11-20 11:46:44,917 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-20 11:46:44,917 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-20 11:46:44,919 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-20 11:46:44,919 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-20 11:46:44,920 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-20 11:46:44,921 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-20 11:46:44,922 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-20 11:46:44,922 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-20 11:46:44,923 INFO L138 SettingsManager]: * Use SBE=true [2022-11-20 11:46:44,923 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-20 11:46:44,925 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-20 11:46:44,926 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-20 11:46:44,926 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-20 11:46:44,926 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-20 11:46:44,927 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-20 11:46:44,927 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-20 11:46:44,928 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-20 11:46:44,928 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-20 11:46:44,928 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-20 11:46:44,929 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-20 11:46:44,929 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-20 11:46:44,930 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-20 11:46:44,930 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-20 11:46:44,931 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-20 11:46:44,931 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 11:46:44,931 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-20 11:46:44,932 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-20 11:46:44,932 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-20 11:46:44,933 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-20 11:46:44,934 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-20 11:46:44,934 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-20 11:46:44,935 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-20 11:46:44,935 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-20 11:46:44,936 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_27cf5266-8cde-4ea0-9b5b-fb69db61a10b/bin/uautomizer-ug76WZFUDN/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27cf5266-8cde-4ea0-9b5b-fb69db61a10b/bin/uautomizer-ug76WZFUDN Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1e30b67a045ce6921ac9aa6cdcebddb50c3d7d787a6b9dd7b66c9173f916fde4 [2022-11-20 11:46:45,309 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-20 11:46:45,342 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-20 11:46:45,346 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-20 11:46:45,351 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-20 11:46:45,351 INFO L275 PluginConnector]: CDTParser initialized [2022-11-20 11:46:45,353 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27cf5266-8cde-4ea0-9b5b-fb69db61a10b/bin/uautomizer-ug76WZFUDN/../../sv-benchmarks/c/pthread/triangular-longer-1.i [2022-11-20 11:46:49,308 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-20 11:46:49,719 INFO L351 CDTParser]: Found 1 translation units. [2022-11-20 11:46:49,720 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27cf5266-8cde-4ea0-9b5b-fb69db61a10b/sv-benchmarks/c/pthread/triangular-longer-1.i [2022-11-20 11:46:49,736 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27cf5266-8cde-4ea0-9b5b-fb69db61a10b/bin/uautomizer-ug76WZFUDN/data/7dd037e43/ca40ba9fb2d640e0a61ee32c43caa71b/FLAG24f0f27b9 [2022-11-20 11:46:49,755 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27cf5266-8cde-4ea0-9b5b-fb69db61a10b/bin/uautomizer-ug76WZFUDN/data/7dd037e43/ca40ba9fb2d640e0a61ee32c43caa71b [2022-11-20 11:46:49,758 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-20 11:46:49,760 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-20 11:46:49,762 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-20 11:46:49,762 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-20 11:46:49,771 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-20 11:46:49,772 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 11:46:49" (1/1) ... [2022-11-20 11:46:49,773 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2bb47a5e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:46:49, skipping insertion in model container [2022-11-20 11:46:49,773 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 11:46:49" (1/1) ... [2022-11-20 11:46:49,787 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-20 11:46:49,851 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-20 11:46:50,255 WARN L237 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_27cf5266-8cde-4ea0-9b5b-fb69db61a10b/sv-benchmarks/c/pthread/triangular-longer-1.i[30961,30974] [2022-11-20 11:46:50,263 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 11:46:50,278 INFO L203 MainTranslator]: Completed pre-run [2022-11-20 11:46:50,370 WARN L237 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_27cf5266-8cde-4ea0-9b5b-fb69db61a10b/sv-benchmarks/c/pthread/triangular-longer-1.i[30961,30974] [2022-11-20 11:46:50,378 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 11:46:50,421 INFO L208 MainTranslator]: Completed translation [2022-11-20 11:46:50,422 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:46:50 WrapperNode [2022-11-20 11:46:50,422 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-20 11:46:50,424 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-20 11:46:50,424 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-20 11:46:50,424 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-20 11:46:50,435 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:46:50" (1/1) ... [2022-11-20 11:46:50,471 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:46:50" (1/1) ... [2022-11-20 11:46:50,506 INFO L138 Inliner]: procedures = 169, calls = 24, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 47 [2022-11-20 11:46:50,507 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-20 11:46:50,508 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-20 11:46:50,508 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-20 11:46:50,508 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-20 11:46:50,523 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:46:50" (1/1) ... [2022-11-20 11:46:50,523 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:46:50" (1/1) ... [2022-11-20 11:46:50,541 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:46:50" (1/1) ... [2022-11-20 11:46:50,542 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:46:50" (1/1) ... [2022-11-20 11:46:50,548 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:46:50" (1/1) ... [2022-11-20 11:46:50,560 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:46:50" (1/1) ... [2022-11-20 11:46:50,569 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:46:50" (1/1) ... [2022-11-20 11:46:50,570 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:46:50" (1/1) ... [2022-11-20 11:46:50,573 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-20 11:46:50,583 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-20 11:46:50,583 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-20 11:46:50,583 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-20 11:46:50,584 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:46:50" (1/1) ... [2022-11-20 11:46:50,593 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 11:46:50,610 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27cf5266-8cde-4ea0-9b5b-fb69db61a10b/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:46:50,629 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27cf5266-8cde-4ea0-9b5b-fb69db61a10b/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-20 11:46:50,662 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27cf5266-8cde-4ea0-9b5b-fb69db61a10b/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-20 11:46:50,700 INFO L130 BoogieDeclarations]: Found specification of procedure t1 [2022-11-20 11:46:50,700 INFO L138 BoogieDeclarations]: Found implementation of procedure t1 [2022-11-20 11:46:50,701 INFO L130 BoogieDeclarations]: Found specification of procedure t2 [2022-11-20 11:46:50,701 INFO L138 BoogieDeclarations]: Found implementation of procedure t2 [2022-11-20 11:46:50,701 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-20 11:46:50,701 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-11-20 11:46:50,702 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-20 11:46:50,702 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-20 11:46:50,703 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-20 11:46:50,704 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-20 11:46:50,704 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-11-20 11:46:50,704 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-20 11:46:50,704 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-20 11:46:50,706 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-20 11:46:50,867 INFO L235 CfgBuilder]: Building ICFG [2022-11-20 11:46:50,870 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-20 11:46:51,059 INFO L276 CfgBuilder]: Performing block encoding [2022-11-20 11:46:51,068 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-20 11:46:51,069 INFO L300 CfgBuilder]: Removed 2 assume(true) statements. [2022-11-20 11:46:51,072 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 11:46:51 BoogieIcfgContainer [2022-11-20 11:46:51,073 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-20 11:46:51,076 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-20 11:46:51,077 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-20 11:46:51,082 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-20 11:46:51,082 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 11:46:49" (1/3) ... [2022-11-20 11:46:51,083 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@63a25961 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 11:46:51, skipping insertion in model container [2022-11-20 11:46:51,084 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:46:50" (2/3) ... [2022-11-20 11:46:51,084 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@63a25961 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 11:46:51, skipping insertion in model container [2022-11-20 11:46:51,084 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 11:46:51" (3/3) ... [2022-11-20 11:46:51,086 INFO L112 eAbstractionObserver]: Analyzing ICFG triangular-longer-1.i [2022-11-20 11:46:51,098 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-20 11:46:51,113 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-20 11:46:51,113 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-20 11:46:51,114 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-20 11:46:51,268 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-11-20 11:46:51,335 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 72 places, 70 transitions, 150 flow [2022-11-20 11:46:51,436 INFO L130 PetriNetUnfolder]: 5/68 cut-off events. [2022-11-20 11:46:51,436 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-20 11:46:51,451 INFO L83 FinitePrefix]: Finished finitePrefix Result has 75 conditions, 68 events. 5/68 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 62 event pairs, 0 based on Foata normal form. 0/62 useless extension candidates. Maximal degree in co-relation 47. Up to 2 conditions per place. [2022-11-20 11:46:51,451 INFO L82 GeneralOperation]: Start removeDead. Operand has 72 places, 70 transitions, 150 flow [2022-11-20 11:46:51,461 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 70 places, 68 transitions, 142 flow [2022-11-20 11:46:51,491 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-20 11:46:51,502 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;@7b1d76c0, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-20 11:46:51,503 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2022-11-20 11:46:51,594 INFO L130 PetriNetUnfolder]: 4/57 cut-off events. [2022-11-20 11:46:51,594 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-20 11:46:51,595 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:46:51,596 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] [2022-11-20 11:46:51,596 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-20 11:46:51,603 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:46:51,603 INFO L85 PathProgramCache]: Analyzing trace with hash 398220865, now seen corresponding path program 1 times [2022-11-20 11:46:51,615 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:46:51,616 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1737618492] [2022-11-20 11:46:51,616 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:46:51,617 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:46:51,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:46:52,699 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:46:52,700 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:46:52,700 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1737618492] [2022-11-20 11:46:52,701 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1737618492] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:46:52,702 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:46:52,702 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-20 11:46:52,705 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1541275508] [2022-11-20 11:46:52,706 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:46:52,718 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-20 11:46:52,718 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:46:52,758 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-20 11:46:52,760 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-20 11:46:52,766 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 70 [2022-11-20 11:46:52,771 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 68 transitions, 142 flow. Second operand has 6 states, 6 states have (on average 56.333333333333336) internal successors, (338), 6 states have internal predecessors, (338), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:46:52,771 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:46:52,771 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 70 [2022-11-20 11:46:52,773 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:46:52,990 INFO L130 PetriNetUnfolder]: 42/203 cut-off events. [2022-11-20 11:46:52,990 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-11-20 11:46:52,993 INFO L83 FinitePrefix]: Finished finitePrefix Result has 283 conditions, 203 events. 42/203 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 766 event pairs, 3 based on Foata normal form. 45/231 useless extension candidates. Maximal degree in co-relation 250. Up to 28 conditions per place. [2022-11-20 11:46:52,996 INFO L137 encePairwiseOnDemand]: 59/70 looper letters, 22 selfloop transitions, 17 changer transitions 0/92 dead transitions. [2022-11-20 11:46:52,996 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 92 transitions, 271 flow [2022-11-20 11:46:52,998 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-20 11:46:53,001 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-11-20 11:46:53,011 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 613 transitions. [2022-11-20 11:46:53,015 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8757142857142857 [2022-11-20 11:46:53,017 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 613 transitions. [2022-11-20 11:46:53,017 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 613 transitions. [2022-11-20 11:46:53,021 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:46:53,024 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 613 transitions. [2022-11-20 11:46:53,029 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 61.3) internal successors, (613), 10 states have internal predecessors, (613), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:46:53,038 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 70.0) internal successors, (770), 11 states have internal predecessors, (770), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:46:53,047 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 70.0) internal successors, (770), 11 states have internal predecessors, (770), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:46:53,049 INFO L175 Difference]: Start difference. First operand has 70 places, 68 transitions, 142 flow. Second operand 10 states and 613 transitions. [2022-11-20 11:46:53,050 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 92 transitions, 271 flow [2022-11-20 11:46:53,053 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 92 transitions, 268 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-20 11:46:53,057 INFO L231 Difference]: Finished difference. Result has 85 places, 85 transitions, 276 flow [2022-11-20 11:46:53,060 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=70, PETRI_DIFFERENCE_MINUEND_FLOW=132, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=64, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=276, PETRI_PLACES=85, PETRI_TRANSITIONS=85} [2022-11-20 11:46:53,065 INFO L288 CegarLoopForPetriNet]: 70 programPoint places, 15 predicate places. [2022-11-20 11:46:53,065 INFO L495 AbstractCegarLoop]: Abstraction has has 85 places, 85 transitions, 276 flow [2022-11-20 11:46:53,065 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 56.333333333333336) internal successors, (338), 6 states have internal predecessors, (338), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:46:53,066 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:46:53,066 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] [2022-11-20 11:46:53,066 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-20 11:46:53,067 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-20 11:46:53,067 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:46:53,067 INFO L85 PathProgramCache]: Analyzing trace with hash 245149124, now seen corresponding path program 1 times [2022-11-20 11:46:53,068 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:46:53,068 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1613031473] [2022-11-20 11:46:53,068 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:46:53,069 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:46:53,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:46:53,451 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:46:53,452 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:46:53,452 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1613031473] [2022-11-20 11:46:53,452 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1613031473] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:46:53,453 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:46:53,453 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-20 11:46:53,453 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1553748191] [2022-11-20 11:46:53,454 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:46:53,456 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-20 11:46:53,456 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:46:53,457 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-20 11:46:53,457 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-20 11:46:53,459 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 70 [2022-11-20 11:46:53,460 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 85 places, 85 transitions, 276 flow. Second operand has 6 states, 6 states have (on average 56.5) internal successors, (339), 6 states have internal predecessors, (339), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:46:53,460 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:46:53,460 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 70 [2022-11-20 11:46:53,461 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:46:53,779 INFO L130 PetriNetUnfolder]: 46/218 cut-off events. [2022-11-20 11:46:53,779 INFO L131 PetriNetUnfolder]: For 115/120 co-relation queries the response was YES. [2022-11-20 11:46:53,785 INFO L83 FinitePrefix]: Finished finitePrefix Result has 421 conditions, 218 events. 46/218 cut-off events. For 115/120 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 852 event pairs, 0 based on Foata normal form. 3/205 useless extension candidates. Maximal degree in co-relation 377. Up to 35 conditions per place. [2022-11-20 11:46:53,787 INFO L137 encePairwiseOnDemand]: 63/70 looper letters, 16 selfloop transitions, 9 changer transitions 40/110 dead transitions. [2022-11-20 11:46:53,788 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 92 places, 110 transitions, 508 flow [2022-11-20 11:46:53,789 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-20 11:46:53,789 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-11-20 11:46:53,795 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 475 transitions. [2022-11-20 11:46:53,798 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8482142857142857 [2022-11-20 11:46:53,799 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 475 transitions. [2022-11-20 11:46:53,799 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 475 transitions. [2022-11-20 11:46:53,800 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:46:53,800 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 475 transitions. [2022-11-20 11:46:53,803 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 59.375) internal successors, (475), 8 states have internal predecessors, (475), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:46:53,809 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 70.0) internal successors, (630), 9 states have internal predecessors, (630), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:46:53,811 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 70.0) internal successors, (630), 9 states have internal predecessors, (630), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:46:53,811 INFO L175 Difference]: Start difference. First operand has 85 places, 85 transitions, 276 flow. Second operand 8 states and 475 transitions. [2022-11-20 11:46:53,811 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 92 places, 110 transitions, 508 flow [2022-11-20 11:46:53,821 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 92 places, 110 transitions, 508 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-20 11:46:53,825 INFO L231 Difference]: Finished difference. Result has 96 places, 67 transitions, 237 flow [2022-11-20 11:46:53,826 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=70, PETRI_DIFFERENCE_MINUEND_FLOW=276, PETRI_DIFFERENCE_MINUEND_PLACES=85, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=85, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=77, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=237, PETRI_PLACES=96, PETRI_TRANSITIONS=67} [2022-11-20 11:46:53,827 INFO L288 CegarLoopForPetriNet]: 70 programPoint places, 26 predicate places. [2022-11-20 11:46:53,828 INFO L495 AbstractCegarLoop]: Abstraction has has 96 places, 67 transitions, 237 flow [2022-11-20 11:46:53,828 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 56.5) internal successors, (339), 6 states have internal predecessors, (339), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:46:53,829 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:46:53,829 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] [2022-11-20 11:46:53,830 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-20 11:46:53,831 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-20 11:46:53,832 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:46:53,832 INFO L85 PathProgramCache]: Analyzing trace with hash 1444168350, now seen corresponding path program 1 times [2022-11-20 11:46:53,832 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:46:53,833 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [776874175] [2022-11-20 11:46:53,833 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:46:53,835 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:46:53,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:46:54,191 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:46:54,192 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:46:54,192 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [776874175] [2022-11-20 11:46:54,192 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [776874175] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:46:54,193 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:46:54,194 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-20 11:46:54,194 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1268111627] [2022-11-20 11:46:54,195 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:46:54,196 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-20 11:46:54,197 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:46:54,198 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-20 11:46:54,198 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-20 11:46:54,200 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 70 [2022-11-20 11:46:54,201 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 96 places, 67 transitions, 237 flow. Second operand has 6 states, 6 states have (on average 56.5) internal successors, (339), 6 states have internal predecessors, (339), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:46:54,201 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:46:54,202 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 70 [2022-11-20 11:46:54,202 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:46:54,371 INFO L130 PetriNetUnfolder]: 37/195 cut-off events. [2022-11-20 11:46:54,372 INFO L131 PetriNetUnfolder]: For 255/264 co-relation queries the response was YES. [2022-11-20 11:46:54,375 INFO L83 FinitePrefix]: Finished finitePrefix Result has 411 conditions, 195 events. 37/195 cut-off events. For 255/264 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 642 event pairs, 0 based on Foata normal form. 12/188 useless extension candidates. Maximal degree in co-relation 361. Up to 35 conditions per place. [2022-11-20 11:46:54,377 INFO L137 encePairwiseOnDemand]: 64/70 looper letters, 23 selfloop transitions, 11 changer transitions 8/87 dead transitions. [2022-11-20 11:46:54,377 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 87 transitions, 457 flow [2022-11-20 11:46:54,378 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-20 11:46:54,378 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-11-20 11:46:54,379 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 530 transitions. [2022-11-20 11:46:54,380 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8412698412698413 [2022-11-20 11:46:54,381 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 530 transitions. [2022-11-20 11:46:54,382 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 530 transitions. [2022-11-20 11:46:54,382 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:46:54,383 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 530 transitions. [2022-11-20 11:46:54,387 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 58.888888888888886) internal successors, (530), 9 states have internal predecessors, (530), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:46:54,390 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 70.0) internal successors, (700), 10 states have internal predecessors, (700), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:46:54,392 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 70.0) internal successors, (700), 10 states have internal predecessors, (700), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:46:54,392 INFO L175 Difference]: Start difference. First operand has 96 places, 67 transitions, 237 flow. Second operand 9 states and 530 transitions. [2022-11-20 11:46:54,392 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 87 transitions, 457 flow [2022-11-20 11:46:54,399 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 87 transitions, 387 flow, removed 25 selfloop flow, removed 9 redundant places. [2022-11-20 11:46:54,403 INFO L231 Difference]: Finished difference. Result has 86 places, 72 transitions, 289 flow [2022-11-20 11:46:54,404 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=70, PETRI_DIFFERENCE_MINUEND_FLOW=209, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=67, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=289, PETRI_PLACES=86, PETRI_TRANSITIONS=72} [2022-11-20 11:46:54,411 INFO L288 CegarLoopForPetriNet]: 70 programPoint places, 16 predicate places. [2022-11-20 11:46:54,411 INFO L495 AbstractCegarLoop]: Abstraction has has 86 places, 72 transitions, 289 flow [2022-11-20 11:46:54,412 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 56.5) internal successors, (339), 6 states have internal predecessors, (339), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:46:54,412 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:46:54,412 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] [2022-11-20 11:46:54,412 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-20 11:46:54,413 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-20 11:46:54,415 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:46:54,415 INFO L85 PathProgramCache]: Analyzing trace with hash -1245653052, now seen corresponding path program 2 times [2022-11-20 11:46:54,416 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:46:54,416 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1970490381] [2022-11-20 11:46:54,416 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:46:54,417 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:46:54,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:46:54,745 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:46:54,745 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:46:54,746 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1970490381] [2022-11-20 11:46:54,746 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1970490381] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:46:54,746 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:46:54,747 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-20 11:46:54,747 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [203720726] [2022-11-20 11:46:54,747 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:46:54,753 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-20 11:46:54,754 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:46:54,755 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-20 11:46:54,755 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-20 11:46:54,756 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 70 [2022-11-20 11:46:54,757 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 72 transitions, 289 flow. Second operand has 6 states, 6 states have (on average 56.5) internal successors, (339), 6 states have internal predecessors, (339), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:46:54,758 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:46:54,758 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 70 [2022-11-20 11:46:54,758 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:46:54,943 INFO L130 PetriNetUnfolder]: 30/184 cut-off events. [2022-11-20 11:46:54,944 INFO L131 PetriNetUnfolder]: For 240/261 co-relation queries the response was YES. [2022-11-20 11:46:54,945 INFO L83 FinitePrefix]: Finished finitePrefix Result has 404 conditions, 184 events. 30/184 cut-off events. For 240/261 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 612 event pairs, 0 based on Foata normal form. 18/184 useless extension candidates. Maximal degree in co-relation 372. Up to 32 conditions per place. [2022-11-20 11:46:54,946 INFO L137 encePairwiseOnDemand]: 63/70 looper letters, 19 selfloop transitions, 12 changer transitions 11/87 dead transitions. [2022-11-20 11:46:54,947 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 91 places, 87 transitions, 487 flow [2022-11-20 11:46:54,947 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-20 11:46:54,947 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-11-20 11:46:54,949 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 524 transitions. [2022-11-20 11:46:54,950 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8317460317460318 [2022-11-20 11:46:54,950 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 524 transitions. [2022-11-20 11:46:54,950 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 524 transitions. [2022-11-20 11:46:54,951 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:46:54,951 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 524 transitions. [2022-11-20 11:46:54,955 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 58.22222222222222) internal successors, (524), 9 states have internal predecessors, (524), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:46:54,957 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 70.0) internal successors, (700), 10 states have internal predecessors, (700), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:46:54,961 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 70.0) internal successors, (700), 10 states have internal predecessors, (700), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:46:54,961 INFO L175 Difference]: Start difference. First operand has 86 places, 72 transitions, 289 flow. Second operand 9 states and 524 transitions. [2022-11-20 11:46:54,961 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 91 places, 87 transitions, 487 flow [2022-11-20 11:46:54,965 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 88 places, 87 transitions, 467 flow, removed 6 selfloop flow, removed 3 redundant places. [2022-11-20 11:46:54,967 INFO L231 Difference]: Finished difference. Result has 93 places, 73 transitions, 332 flow [2022-11-20 11:46:54,968 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=70, PETRI_DIFFERENCE_MINUEND_FLOW=273, PETRI_DIFFERENCE_MINUEND_PLACES=80, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=72, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=332, PETRI_PLACES=93, PETRI_TRANSITIONS=73} [2022-11-20 11:46:54,968 INFO L288 CegarLoopForPetriNet]: 70 programPoint places, 23 predicate places. [2022-11-20 11:46:54,969 INFO L495 AbstractCegarLoop]: Abstraction has has 93 places, 73 transitions, 332 flow [2022-11-20 11:46:54,969 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 56.5) internal successors, (339), 6 states have internal predecessors, (339), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:46:54,969 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:46:54,970 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] [2022-11-20 11:46:54,970 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-20 11:46:54,970 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-20 11:46:54,971 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:46:54,971 INFO L85 PathProgramCache]: Analyzing trace with hash -150168411, now seen corresponding path program 1 times [2022-11-20 11:46:54,971 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:46:54,972 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1552198644] [2022-11-20 11:46:54,972 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:46:54,972 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:46:54,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:46:55,203 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:46:55,204 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:46:55,204 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1552198644] [2022-11-20 11:46:55,204 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1552198644] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:46:55,204 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:46:55,205 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-20 11:46:55,205 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1420328585] [2022-11-20 11:46:55,205 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:46:55,205 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-20 11:46:55,206 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:46:55,206 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-20 11:46:55,206 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-11-20 11:46:55,207 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 70 [2022-11-20 11:46:55,208 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 93 places, 73 transitions, 332 flow. Second operand has 7 states, 7 states have (on average 56.42857142857143) internal successors, (395), 7 states have internal predecessors, (395), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:46:55,208 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:46:55,208 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 70 [2022-11-20 11:46:55,209 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:46:55,426 INFO L130 PetriNetUnfolder]: 43/234 cut-off events. [2022-11-20 11:46:55,427 INFO L131 PetriNetUnfolder]: For 614/638 co-relation queries the response was YES. [2022-11-20 11:46:55,428 INFO L83 FinitePrefix]: Finished finitePrefix Result has 589 conditions, 234 events. 43/234 cut-off events. For 614/638 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 837 event pairs, 1 based on Foata normal form. 17/229 useless extension candidates. Maximal degree in co-relation 535. Up to 50 conditions per place. [2022-11-20 11:46:55,430 INFO L137 encePairwiseOnDemand]: 63/70 looper letters, 23 selfloop transitions, 21 changer transitions 8/97 dead transitions. [2022-11-20 11:46:55,431 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 100 places, 97 transitions, 660 flow [2022-11-20 11:46:55,431 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-20 11:46:55,432 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2022-11-20 11:46:55,433 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 644 transitions. [2022-11-20 11:46:55,434 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8363636363636363 [2022-11-20 11:46:55,435 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 644 transitions. [2022-11-20 11:46:55,435 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 644 transitions. [2022-11-20 11:46:55,436 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:46:55,436 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 644 transitions. [2022-11-20 11:46:55,438 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 58.54545454545455) internal successors, (644), 11 states have internal predecessors, (644), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:46:55,441 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 70.0) internal successors, (840), 12 states have internal predecessors, (840), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:46:55,441 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 70.0) internal successors, (840), 12 states have internal predecessors, (840), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:46:55,442 INFO L175 Difference]: Start difference. First operand has 93 places, 73 transitions, 332 flow. Second operand 11 states and 644 transitions. [2022-11-20 11:46:55,442 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 100 places, 97 transitions, 660 flow [2022-11-20 11:46:55,446 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 90 places, 97 transitions, 544 flow, removed 45 selfloop flow, removed 10 redundant places. [2022-11-20 11:46:55,449 INFO L231 Difference]: Finished difference. Result has 97 places, 79 transitions, 417 flow [2022-11-20 11:46:55,449 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=70, PETRI_DIFFERENCE_MINUEND_FLOW=286, PETRI_DIFFERENCE_MINUEND_PLACES=80, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=73, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=417, PETRI_PLACES=97, PETRI_TRANSITIONS=79} [2022-11-20 11:46:55,450 INFO L288 CegarLoopForPetriNet]: 70 programPoint places, 27 predicate places. [2022-11-20 11:46:55,451 INFO L495 AbstractCegarLoop]: Abstraction has has 97 places, 79 transitions, 417 flow [2022-11-20 11:46:55,451 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 56.42857142857143) internal successors, (395), 7 states have internal predecessors, (395), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:46:55,451 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:46:55,452 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] [2022-11-20 11:46:55,452 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-20 11:46:55,452 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-20 11:46:55,453 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:46:55,453 INFO L85 PathProgramCache]: Analyzing trace with hash -1283973881, now seen corresponding path program 2 times [2022-11-20 11:46:55,453 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:46:55,454 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [410133747] [2022-11-20 11:46:55,454 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:46:55,454 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:46:55,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:46:55,691 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:46:55,692 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:46:55,692 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [410133747] [2022-11-20 11:46:55,692 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [410133747] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:46:55,693 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:46:55,693 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-20 11:46:55,693 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1710102131] [2022-11-20 11:46:55,694 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:46:55,695 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-20 11:46:55,695 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:46:55,696 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-20 11:46:55,697 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-20 11:46:55,698 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 70 [2022-11-20 11:46:55,700 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 97 places, 79 transitions, 417 flow. Second operand has 7 states, 7 states have (on average 56.42857142857143) internal successors, (395), 7 states have internal predecessors, (395), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:46:55,701 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:46:55,701 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 70 [2022-11-20 11:46:55,701 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:46:55,979 INFO L130 PetriNetUnfolder]: 36/216 cut-off events. [2022-11-20 11:46:55,979 INFO L131 PetriNetUnfolder]: For 788/823 co-relation queries the response was YES. [2022-11-20 11:46:55,983 INFO L83 FinitePrefix]: Finished finitePrefix Result has 602 conditions, 216 events. 36/216 cut-off events. For 788/823 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 761 event pairs, 1 based on Foata normal form. 27/223 useless extension candidates. Maximal degree in co-relation 558. Up to 44 conditions per place. [2022-11-20 11:46:55,985 INFO L137 encePairwiseOnDemand]: 63/70 looper letters, 20 selfloop transitions, 21 changer transitions 11/97 dead transitions. [2022-11-20 11:46:55,985 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 104 places, 97 transitions, 749 flow [2022-11-20 11:46:55,986 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-20 11:46:55,986 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2022-11-20 11:46:55,989 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 638 transitions. [2022-11-20 11:46:55,990 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8285714285714286 [2022-11-20 11:46:55,991 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 638 transitions. [2022-11-20 11:46:55,991 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 638 transitions. [2022-11-20 11:46:55,992 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:46:55,992 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 638 transitions. [2022-11-20 11:46:55,995 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 58.0) internal successors, (638), 11 states have internal predecessors, (638), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:46:56,000 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 70.0) internal successors, (840), 12 states have internal predecessors, (840), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:46:56,001 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 70.0) internal successors, (840), 12 states have internal predecessors, (840), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:46:56,002 INFO L175 Difference]: Start difference. First operand has 97 places, 79 transitions, 417 flow. Second operand 11 states and 638 transitions. [2022-11-20 11:46:56,002 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 104 places, 97 transitions, 749 flow [2022-11-20 11:46:56,009 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 99 places, 97 transitions, 693 flow, removed 19 selfloop flow, removed 5 redundant places. [2022-11-20 11:46:56,013 INFO L231 Difference]: Finished difference. Result has 104 places, 80 transitions, 470 flow [2022-11-20 11:46:56,013 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=70, PETRI_DIFFERENCE_MINUEND_FLOW=383, PETRI_DIFFERENCE_MINUEND_PLACES=89, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=79, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=470, PETRI_PLACES=104, PETRI_TRANSITIONS=80} [2022-11-20 11:46:56,017 INFO L288 CegarLoopForPetriNet]: 70 programPoint places, 34 predicate places. [2022-11-20 11:46:56,018 INFO L495 AbstractCegarLoop]: Abstraction has has 104 places, 80 transitions, 470 flow [2022-11-20 11:46:56,022 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 56.42857142857143) internal successors, (395), 7 states have internal predecessors, (395), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:46:56,022 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:46:56,023 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] [2022-11-20 11:46:56,023 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-20 11:46:56,023 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-20 11:46:56,024 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:46:56,024 INFO L85 PathProgramCache]: Analyzing trace with hash -949175033, now seen corresponding path program 3 times [2022-11-20 11:46:56,025 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:46:56,025 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [459386272] [2022-11-20 11:46:56,025 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:46:56,026 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:46:56,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:46:56,292 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:46:56,292 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:46:56,294 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [459386272] [2022-11-20 11:46:56,297 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [459386272] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:46:56,297 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:46:56,297 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-20 11:46:56,298 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1429096607] [2022-11-20 11:46:56,301 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:46:56,302 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-20 11:46:56,304 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:46:56,305 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-20 11:46:56,305 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-20 11:46:56,307 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 70 [2022-11-20 11:46:56,310 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 104 places, 80 transitions, 470 flow. Second operand has 7 states, 7 states have (on average 56.42857142857143) internal successors, (395), 7 states have internal predecessors, (395), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:46:56,311 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:46:56,311 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 70 [2022-11-20 11:46:56,311 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:46:56,588 INFO L130 PetriNetUnfolder]: 35/201 cut-off events. [2022-11-20 11:46:56,588 INFO L131 PetriNetUnfolder]: For 899/928 co-relation queries the response was YES. [2022-11-20 11:46:56,590 INFO L83 FinitePrefix]: Finished finitePrefix Result has 604 conditions, 201 events. 35/201 cut-off events. For 899/928 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 736 event pairs, 0 based on Foata normal form. 23/207 useless extension candidates. Maximal degree in co-relation 556. Up to 42 conditions per place. [2022-11-20 11:46:56,592 INFO L137 encePairwiseOnDemand]: 63/70 looper letters, 25 selfloop transitions, 17 changer transitions 5/92 dead transitions. [2022-11-20 11:46:56,593 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 112 places, 92 transitions, 718 flow [2022-11-20 11:46:56,593 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-20 11:46:56,595 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2022-11-20 11:46:56,597 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 695 transitions. [2022-11-20 11:46:56,598 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8273809523809523 [2022-11-20 11:46:56,598 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 695 transitions. [2022-11-20 11:46:56,599 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 695 transitions. [2022-11-20 11:46:56,599 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:46:56,600 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 695 transitions. [2022-11-20 11:46:56,602 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 57.916666666666664) internal successors, (695), 12 states have internal predecessors, (695), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:46:56,606 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 70.0) internal successors, (910), 13 states have internal predecessors, (910), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:46:56,607 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 70.0) internal successors, (910), 13 states have internal predecessors, (910), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:46:56,607 INFO L175 Difference]: Start difference. First operand has 104 places, 80 transitions, 470 flow. Second operand 12 states and 695 transitions. [2022-11-20 11:46:56,607 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 112 places, 92 transitions, 718 flow [2022-11-20 11:46:56,615 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 103 places, 92 transitions, 644 flow, removed 19 selfloop flow, removed 9 redundant places. [2022-11-20 11:46:56,621 INFO L231 Difference]: Finished difference. Result has 107 places, 83 transitions, 503 flow [2022-11-20 11:46:56,622 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=70, PETRI_DIFFERENCE_MINUEND_FLOW=414, PETRI_DIFFERENCE_MINUEND_PLACES=92, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=80, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=64, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=503, PETRI_PLACES=107, PETRI_TRANSITIONS=83} [2022-11-20 11:46:56,623 INFO L288 CegarLoopForPetriNet]: 70 programPoint places, 37 predicate places. [2022-11-20 11:46:56,623 INFO L495 AbstractCegarLoop]: Abstraction has has 107 places, 83 transitions, 503 flow [2022-11-20 11:46:56,624 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 56.42857142857143) internal successors, (395), 7 states have internal predecessors, (395), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:46:56,624 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:46:56,624 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:46:56,624 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-20 11:46:56,625 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-20 11:46:56,625 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:46:56,626 INFO L85 PathProgramCache]: Analyzing trace with hash 270829877, now seen corresponding path program 1 times [2022-11-20 11:46:56,626 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:46:56,626 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [837674101] [2022-11-20 11:46:56,627 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:46:56,627 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:46:56,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:46:56,907 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:46:56,908 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:46:56,908 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [837674101] [2022-11-20 11:46:56,908 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [837674101] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 11:46:56,909 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [96009284] [2022-11-20 11:46:56,909 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:46:56,909 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:46:56,910 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27cf5266-8cde-4ea0-9b5b-fb69db61a10b/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:46:56,915 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27cf5266-8cde-4ea0-9b5b-fb69db61a10b/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 11:46:56,954 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27cf5266-8cde-4ea0-9b5b-fb69db61a10b/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-20 11:46:57,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:46:57,054 INFO L263 TraceCheckSpWp]: Trace formula consists of 136 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-20 11:46:57,065 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:46:57,316 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:46:57,317 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 11:46:57,532 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:46:57,533 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [96009284] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 11:46:57,533 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-20 11:46:57,533 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 13 [2022-11-20 11:46:57,534 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [479355775] [2022-11-20 11:46:57,534 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-20 11:46:57,535 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-11-20 11:46:57,535 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:46:57,536 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-11-20 11:46:57,536 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=117, Unknown=0, NotChecked=0, Total=156 [2022-11-20 11:46:57,538 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 70 [2022-11-20 11:46:57,539 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 107 places, 83 transitions, 503 flow. Second operand has 13 states, 13 states have (on average 56.61538461538461) internal successors, (736), 13 states have internal predecessors, (736), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:46:57,539 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:46:57,540 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 70 [2022-11-20 11:46:57,540 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:46:58,111 INFO L130 PetriNetUnfolder]: 53/299 cut-off events. [2022-11-20 11:46:58,111 INFO L131 PetriNetUnfolder]: For 1219/1259 co-relation queries the response was YES. [2022-11-20 11:46:58,114 INFO L83 FinitePrefix]: Finished finitePrefix Result has 890 conditions, 299 events. 53/299 cut-off events. For 1219/1259 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 1141 event pairs, 1 based on Foata normal form. 28/298 useless extension candidates. Maximal degree in co-relation 843. Up to 64 conditions per place. [2022-11-20 11:46:58,117 INFO L137 encePairwiseOnDemand]: 63/70 looper letters, 27 selfloop transitions, 36 changer transitions 14/122 dead transitions. [2022-11-20 11:46:58,118 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 124 places, 122 transitions, 1187 flow [2022-11-20 11:46:58,118 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-11-20 11:46:58,118 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2022-11-20 11:46:58,121 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 1159 transitions. [2022-11-20 11:46:58,122 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8278571428571428 [2022-11-20 11:46:58,123 INFO L72 ComplementDD]: Start complementDD. Operand 20 states and 1159 transitions. [2022-11-20 11:46:58,123 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 1159 transitions. [2022-11-20 11:46:58,124 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:46:58,124 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 20 states and 1159 transitions. [2022-11-20 11:46:58,128 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 21 states, 20 states have (on average 57.95) internal successors, (1159), 20 states have internal predecessors, (1159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:46:58,132 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 21 states, 21 states have (on average 70.0) internal successors, (1470), 21 states have internal predecessors, (1470), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:46:58,133 INFO L81 ComplementDD]: Finished complementDD. Result has 21 states, 21 states have (on average 70.0) internal successors, (1470), 21 states have internal predecessors, (1470), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:46:58,134 INFO L175 Difference]: Start difference. First operand has 107 places, 83 transitions, 503 flow. Second operand 20 states and 1159 transitions. [2022-11-20 11:46:58,134 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 124 places, 122 transitions, 1187 flow [2022-11-20 11:46:58,142 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 117 places, 122 transitions, 1151 flow, removed 10 selfloop flow, removed 7 redundant places. [2022-11-20 11:46:58,145 INFO L231 Difference]: Finished difference. Result has 127 places, 99 transitions, 828 flow [2022-11-20 11:46:58,146 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=70, PETRI_DIFFERENCE_MINUEND_FLOW=467, PETRI_DIFFERENCE_MINUEND_PLACES=98, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=83, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=828, PETRI_PLACES=127, PETRI_TRANSITIONS=99} [2022-11-20 11:46:58,146 INFO L288 CegarLoopForPetriNet]: 70 programPoint places, 57 predicate places. [2022-11-20 11:46:58,147 INFO L495 AbstractCegarLoop]: Abstraction has has 127 places, 99 transitions, 828 flow [2022-11-20 11:46:58,147 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 56.61538461538461) internal successors, (736), 13 states have internal predecessors, (736), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:46:58,148 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:46:58,148 INFO L209 CegarLoopForPetriNet]: trace histogram [4, 4, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:46:58,156 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27cf5266-8cde-4ea0-9b5b-fb69db61a10b/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-20 11:46:58,355 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27cf5266-8cde-4ea0-9b5b-fb69db61a10b/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2022-11-20 11:46:58,356 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-20 11:46:58,356 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:46:58,356 INFO L85 PathProgramCache]: Analyzing trace with hash -2022110288, now seen corresponding path program 1 times [2022-11-20 11:46:58,357 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:46:58,357 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1293201416] [2022-11-20 11:46:58,357 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:46:58,357 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:46:58,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:46:58,656 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-20 11:46:58,657 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:46:58,657 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1293201416] [2022-11-20 11:46:58,657 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1293201416] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 11:46:58,658 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1909223021] [2022-11-20 11:46:58,658 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:46:58,658 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:46:58,658 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27cf5266-8cde-4ea0-9b5b-fb69db61a10b/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:46:58,660 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27cf5266-8cde-4ea0-9b5b-fb69db61a10b/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 11:46:58,703 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27cf5266-8cde-4ea0-9b5b-fb69db61a10b/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-20 11:46:58,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:46:58,810 INFO L263 TraceCheckSpWp]: Trace formula consists of 160 conjuncts, 11 conjunts are in the unsatisfiable core [2022-11-20 11:46:58,816 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:46:59,050 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-20 11:46:59,051 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 11:46:59,497 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-20 11:46:59,497 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1909223021] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 11:46:59,497 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-20 11:46:59,498 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 17 [2022-11-20 11:46:59,501 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1545272440] [2022-11-20 11:46:59,502 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-20 11:46:59,503 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-11-20 11:46:59,503 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:46:59,505 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-11-20 11:46:59,505 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=205, Unknown=0, NotChecked=0, Total=272 [2022-11-20 11:46:59,507 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 70 [2022-11-20 11:46:59,509 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 127 places, 99 transitions, 828 flow. Second operand has 17 states, 17 states have (on average 56.64705882352941) internal successors, (963), 17 states have internal predecessors, (963), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:46:59,509 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:46:59,509 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 70 [2022-11-20 11:46:59,509 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:47:00,143 INFO L130 PetriNetUnfolder]: 75/452 cut-off events. [2022-11-20 11:47:00,143 INFO L131 PetriNetUnfolder]: For 3341/3397 co-relation queries the response was YES. [2022-11-20 11:47:00,148 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1569 conditions, 452 events. 75/452 cut-off events. For 3341/3397 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 1806 event pairs, 0 based on Foata normal form. 31/437 useless extension candidates. Maximal degree in co-relation 1506. Up to 100 conditions per place. [2022-11-20 11:47:00,152 INFO L137 encePairwiseOnDemand]: 64/70 looper letters, 58 selfloop transitions, 25 changer transitions 26/154 dead transitions. [2022-11-20 11:47:00,152 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 146 places, 154 transitions, 2060 flow [2022-11-20 11:47:00,153 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2022-11-20 11:47:00,153 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2022-11-20 11:47:00,156 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 1450 transitions. [2022-11-20 11:47:00,158 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8285714285714286 [2022-11-20 11:47:00,158 INFO L72 ComplementDD]: Start complementDD. Operand 25 states and 1450 transitions. [2022-11-20 11:47:00,158 INFO L73 IsDeterministic]: Start isDeterministic. Operand 25 states and 1450 transitions. [2022-11-20 11:47:00,160 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:47:00,160 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 25 states and 1450 transitions. [2022-11-20 11:47:00,165 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 26 states, 25 states have (on average 58.0) internal successors, (1450), 25 states have internal predecessors, (1450), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:47:00,173 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 26 states, 26 states have (on average 70.0) internal successors, (1820), 26 states have internal predecessors, (1820), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:47:00,175 INFO L81 ComplementDD]: Finished complementDD. Result has 26 states, 26 states have (on average 70.0) internal successors, (1820), 26 states have internal predecessors, (1820), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:47:00,175 INFO L175 Difference]: Start difference. First operand has 127 places, 99 transitions, 828 flow. Second operand 25 states and 1450 transitions. [2022-11-20 11:47:00,175 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 146 places, 154 transitions, 2060 flow [2022-11-20 11:47:00,195 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 134 places, 154 transitions, 1647 flow, removed 189 selfloop flow, removed 12 redundant places. [2022-11-20 11:47:00,199 INFO L231 Difference]: Finished difference. Result has 153 places, 113 transitions, 955 flow [2022-11-20 11:47:00,199 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=70, PETRI_DIFFERENCE_MINUEND_FLOW=627, PETRI_DIFFERENCE_MINUEND_PLACES=110, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=99, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=83, PETRI_DIFFERENCE_SUBTRAHEND_STATES=25, PETRI_FLOW=955, PETRI_PLACES=153, PETRI_TRANSITIONS=113} [2022-11-20 11:47:00,200 INFO L288 CegarLoopForPetriNet]: 70 programPoint places, 83 predicate places. [2022-11-20 11:47:00,201 INFO L495 AbstractCegarLoop]: Abstraction has has 153 places, 113 transitions, 955 flow [2022-11-20 11:47:00,202 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 56.64705882352941) internal successors, (963), 17 states have internal predecessors, (963), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:47:00,202 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:47:00,202 INFO L209 CegarLoopForPetriNet]: trace histogram [4, 4, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:47:00,215 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27cf5266-8cde-4ea0-9b5b-fb69db61a10b/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-20 11:47:00,409 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27cf5266-8cde-4ea0-9b5b-fb69db61a10b/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:47:00,409 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-20 11:47:00,410 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:47:00,410 INFO L85 PathProgramCache]: Analyzing trace with hash 1596067542, now seen corresponding path program 2 times [2022-11-20 11:47:00,410 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:47:00,411 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [715920298] [2022-11-20 11:47:00,411 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:47:00,411 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:47:00,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:47:00,743 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-20 11:47:00,743 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:47:00,743 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [715920298] [2022-11-20 11:47:00,744 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [715920298] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 11:47:00,744 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1109977860] [2022-11-20 11:47:00,744 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-20 11:47:00,744 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:47:00,745 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27cf5266-8cde-4ea0-9b5b-fb69db61a10b/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:47:00,746 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27cf5266-8cde-4ea0-9b5b-fb69db61a10b/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 11:47:00,771 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27cf5266-8cde-4ea0-9b5b-fb69db61a10b/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-20 11:47:00,872 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-20 11:47:00,872 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 11:47:00,874 INFO L263 TraceCheckSpWp]: Trace formula consists of 160 conjuncts, 11 conjunts are in the unsatisfiable core [2022-11-20 11:47:00,879 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:47:01,093 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-20 11:47:01,094 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 11:47:01,511 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-20 11:47:01,511 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1109977860] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 11:47:01,512 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-20 11:47:01,512 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 18 [2022-11-20 11:47:01,512 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1542489284] [2022-11-20 11:47:01,513 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-20 11:47:01,513 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-11-20 11:47:01,513 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:47:01,514 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-11-20 11:47:01,514 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=244, Unknown=0, NotChecked=0, Total=306 [2022-11-20 11:47:01,517 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 70 [2022-11-20 11:47:01,519 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 153 places, 113 transitions, 955 flow. Second operand has 18 states, 18 states have (on average 56.666666666666664) internal successors, (1020), 18 states have internal predecessors, (1020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:47:01,519 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:47:01,519 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 70 [2022-11-20 11:47:01,520 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:47:02,533 INFO L130 PetriNetUnfolder]: 113/712 cut-off events. [2022-11-20 11:47:02,534 INFO L131 PetriNetUnfolder]: For 12122/12272 co-relation queries the response was YES. [2022-11-20 11:47:02,541 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2934 conditions, 712 events. 113/712 cut-off events. For 12122/12272 co-relation queries the response was YES. Maximal size of possible extension queue 32. Compared 4137 event pairs, 0 based on Foata normal form. 31/671 useless extension candidates. Maximal degree in co-relation 2855. Up to 148 conditions per place. [2022-11-20 11:47:02,548 INFO L137 encePairwiseOnDemand]: 63/70 looper letters, 59 selfloop transitions, 72 changer transitions 26/202 dead transitions. [2022-11-20 11:47:02,549 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 175 places, 202 transitions, 3279 flow [2022-11-20 11:47:02,549 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2022-11-20 11:47:02,550 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2022-11-20 11:47:02,553 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 1851 transitions. [2022-11-20 11:47:02,554 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8263392857142857 [2022-11-20 11:47:02,555 INFO L72 ComplementDD]: Start complementDD. Operand 32 states and 1851 transitions. [2022-11-20 11:47:02,555 INFO L73 IsDeterministic]: Start isDeterministic. Operand 32 states and 1851 transitions. [2022-11-20 11:47:02,560 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:47:02,560 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 32 states and 1851 transitions. [2022-11-20 11:47:02,565 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 33 states, 32 states have (on average 57.84375) internal successors, (1851), 32 states have internal predecessors, (1851), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:47:02,571 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 33 states, 33 states have (on average 70.0) internal successors, (2310), 33 states have internal predecessors, (2310), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:47:02,573 INFO L81 ComplementDD]: Finished complementDD. Result has 33 states, 33 states have (on average 70.0) internal successors, (2310), 33 states have internal predecessors, (2310), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:47:02,573 INFO L175 Difference]: Start difference. First operand has 153 places, 113 transitions, 955 flow. Second operand 32 states and 1851 transitions. [2022-11-20 11:47:02,573 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 175 places, 202 transitions, 3279 flow [2022-11-20 11:47:02,623 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 162 places, 202 transitions, 2817 flow, removed 223 selfloop flow, removed 13 redundant places. [2022-11-20 11:47:02,632 INFO L231 Difference]: Finished difference. Result has 185 places, 151 transitions, 1736 flow [2022-11-20 11:47:02,633 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=70, PETRI_DIFFERENCE_MINUEND_FLOW=829, PETRI_DIFFERENCE_MINUEND_PLACES=131, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=113, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=66, PETRI_DIFFERENCE_SUBTRAHEND_STATES=32, PETRI_FLOW=1736, PETRI_PLACES=185, PETRI_TRANSITIONS=151} [2022-11-20 11:47:02,634 INFO L288 CegarLoopForPetriNet]: 70 programPoint places, 115 predicate places. [2022-11-20 11:47:02,635 INFO L495 AbstractCegarLoop]: Abstraction has has 185 places, 151 transitions, 1736 flow [2022-11-20 11:47:02,636 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 56.666666666666664) internal successors, (1020), 18 states have internal predecessors, (1020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:47:02,636 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:47:02,636 INFO L209 CegarLoopForPetriNet]: trace histogram [4, 4, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:47:02,649 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27cf5266-8cde-4ea0-9b5b-fb69db61a10b/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-20 11:47:02,843 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27cf5266-8cde-4ea0-9b5b-fb69db61a10b/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-11-20 11:47:02,844 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-20 11:47:02,844 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:47:02,844 INFO L85 PathProgramCache]: Analyzing trace with hash 1214506290, now seen corresponding path program 3 times [2022-11-20 11:47:02,845 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:47:02,845 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [380615195] [2022-11-20 11:47:02,845 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:47:02,845 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:47:02,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:47:03,116 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-20 11:47:03,116 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:47:03,117 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [380615195] [2022-11-20 11:47:03,117 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [380615195] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 11:47:03,117 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2117820648] [2022-11-20 11:47:03,118 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-20 11:47:03,118 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:47:03,120 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27cf5266-8cde-4ea0-9b5b-fb69db61a10b/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:47:03,122 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27cf5266-8cde-4ea0-9b5b-fb69db61a10b/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 11:47:03,134 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27cf5266-8cde-4ea0-9b5b-fb69db61a10b/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-20 11:47:03,257 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-11-20 11:47:03,258 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 11:47:03,259 INFO L263 TraceCheckSpWp]: Trace formula consists of 152 conjuncts, 11 conjunts are in the unsatisfiable core [2022-11-20 11:47:03,262 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:47:03,415 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-20 11:47:03,415 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 11:47:03,672 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-20 11:47:03,673 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2117820648] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 11:47:03,673 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-20 11:47:03,673 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 18 [2022-11-20 11:47:03,674 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2050039148] [2022-11-20 11:47:03,674 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-20 11:47:03,674 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-11-20 11:47:03,675 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:47:03,675 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-11-20 11:47:03,676 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=238, Unknown=0, NotChecked=0, Total=306 [2022-11-20 11:47:03,677 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 70 [2022-11-20 11:47:03,679 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 185 places, 151 transitions, 1736 flow. Second operand has 18 states, 18 states have (on average 56.611111111111114) internal successors, (1019), 18 states have internal predecessors, (1019), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:47:03,679 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:47:03,680 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 70 [2022-11-20 11:47:03,680 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:47:05,107 INFO L130 PetriNetUnfolder]: 154/992 cut-off events. [2022-11-20 11:47:05,107 INFO L131 PetriNetUnfolder]: For 31452/31593 co-relation queries the response was YES. [2022-11-20 11:47:05,118 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4905 conditions, 992 events. 154/992 cut-off events. For 31452/31593 co-relation queries the response was YES. Maximal size of possible extension queue 44. Compared 6612 event pairs, 0 based on Foata normal form. 42/934 useless extension candidates. Maximal degree in co-relation 4810. Up to 198 conditions per place. [2022-11-20 11:47:05,129 INFO L137 encePairwiseOnDemand]: 63/70 looper letters, 49 selfloop transitions, 128 changer transitions 26/248 dead transitions. [2022-11-20 11:47:05,130 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 212 places, 248 transitions, 5288 flow [2022-11-20 11:47:05,130 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2022-11-20 11:47:05,131 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2022-11-20 11:47:05,133 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 2143 transitions. [2022-11-20 11:47:05,135 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8274131274131274 [2022-11-20 11:47:05,135 INFO L72 ComplementDD]: Start complementDD. Operand 37 states and 2143 transitions. [2022-11-20 11:47:05,135 INFO L73 IsDeterministic]: Start isDeterministic. Operand 37 states and 2143 transitions. [2022-11-20 11:47:05,139 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:47:05,139 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 37 states and 2143 transitions. [2022-11-20 11:47:05,148 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 38 states, 37 states have (on average 57.91891891891892) internal successors, (2143), 37 states have internal predecessors, (2143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:47:05,156 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 38 states, 38 states have (on average 70.0) internal successors, (2660), 38 states have internal predecessors, (2660), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:47:05,158 INFO L81 ComplementDD]: Finished complementDD. Result has 38 states, 38 states have (on average 70.0) internal successors, (2660), 38 states have internal predecessors, (2660), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:47:05,158 INFO L175 Difference]: Start difference. First operand has 185 places, 151 transitions, 1736 flow. Second operand 37 states and 2143 transitions. [2022-11-20 11:47:05,159 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 212 places, 248 transitions, 5288 flow [2022-11-20 11:47:05,266 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 196 places, 248 transitions, 4514 flow, removed 374 selfloop flow, removed 16 redundant places. [2022-11-20 11:47:05,275 INFO L231 Difference]: Finished difference. Result has 220 places, 193 transitions, 2781 flow [2022-11-20 11:47:05,276 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=70, PETRI_DIFFERENCE_MINUEND_FLOW=1454, PETRI_DIFFERENCE_MINUEND_PLACES=160, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=151, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=87, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=37, PETRI_FLOW=2781, PETRI_PLACES=220, PETRI_TRANSITIONS=193} [2022-11-20 11:47:05,277 INFO L288 CegarLoopForPetriNet]: 70 programPoint places, 150 predicate places. [2022-11-20 11:47:05,277 INFO L495 AbstractCegarLoop]: Abstraction has has 220 places, 193 transitions, 2781 flow [2022-11-20 11:47:05,278 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 56.611111111111114) internal successors, (1019), 18 states have internal predecessors, (1019), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:47:05,278 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:47:05,278 INFO L209 CegarLoopForPetriNet]: trace histogram [5, 5, 4, 4, 4, 4, 4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:47:05,286 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27cf5266-8cde-4ea0-9b5b-fb69db61a10b/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-20 11:47:05,485 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27cf5266-8cde-4ea0-9b5b-fb69db61a10b/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2022-11-20 11:47:05,486 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-20 11:47:05,486 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:47:05,487 INFO L85 PathProgramCache]: Analyzing trace with hash 1976790522, now seen corresponding path program 4 times [2022-11-20 11:47:05,487 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:47:05,487 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1786302553] [2022-11-20 11:47:05,487 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:47:05,488 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:47:05,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:47:05,860 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 0 proven. 59 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:47:05,861 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:47:05,861 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1786302553] [2022-11-20 11:47:05,861 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1786302553] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 11:47:05,861 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [87427569] [2022-11-20 11:47:05,862 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-20 11:47:05,862 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:47:05,862 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27cf5266-8cde-4ea0-9b5b-fb69db61a10b/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:47:05,864 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27cf5266-8cde-4ea0-9b5b-fb69db61a10b/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 11:47:05,872 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27cf5266-8cde-4ea0-9b5b-fb69db61a10b/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-20 11:47:05,993 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-20 11:47:05,994 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 11:47:05,995 INFO L263 TraceCheckSpWp]: Trace formula consists of 184 conjuncts, 15 conjunts are in the unsatisfiable core [2022-11-20 11:47:05,999 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:47:06,243 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 0 proven. 59 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:47:06,243 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 11:47:06,655 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 0 proven. 59 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:47:06,655 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [87427569] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 11:47:06,656 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-20 11:47:06,656 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14, 14] total 25 [2022-11-20 11:47:06,659 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [577982696] [2022-11-20 11:47:06,660 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-20 11:47:06,661 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-11-20 11:47:06,662 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:47:06,663 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-11-20 11:47:06,663 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=138, Invalid=462, Unknown=0, NotChecked=0, Total=600 [2022-11-20 11:47:06,667 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 70 [2022-11-20 11:47:06,670 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 220 places, 193 transitions, 2781 flow. Second operand has 25 states, 25 states have (on average 56.32) internal successors, (1408), 25 states have internal predecessors, (1408), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:47:06,670 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:47:06,670 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 70 [2022-11-20 11:47:06,671 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:47:08,732 INFO L130 PetriNetUnfolder]: 216/1378 cut-off events. [2022-11-20 11:47:08,732 INFO L131 PetriNetUnfolder]: For 76636/76877 co-relation queries the response was YES. [2022-11-20 11:47:08,752 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8508 conditions, 1378 events. 216/1378 cut-off events. For 76636/76877 co-relation queries the response was YES. Maximal size of possible extension queue 42. Compared 9003 event pairs, 1 based on Foata normal form. 42/1278 useless extension candidates. Maximal degree in co-relation 8397. Up to 278 conditions per place. [2022-11-20 11:47:08,772 INFO L137 encePairwiseOnDemand]: 63/70 looper letters, 62 selfloop transitions, 183 changer transitions 32/322 dead transitions. [2022-11-20 11:47:08,772 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 260 places, 322 transitions, 9410 flow [2022-11-20 11:47:08,773 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2022-11-20 11:47:08,773 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2022-11-20 11:47:08,777 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 2893 transitions. [2022-11-20 11:47:08,780 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8265714285714286 [2022-11-20 11:47:08,780 INFO L72 ComplementDD]: Start complementDD. Operand 50 states and 2893 transitions. [2022-11-20 11:47:08,780 INFO L73 IsDeterministic]: Start isDeterministic. Operand 50 states and 2893 transitions. [2022-11-20 11:47:08,782 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:47:08,783 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 50 states and 2893 transitions. [2022-11-20 11:47:08,791 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 51 states, 50 states have (on average 57.86) internal successors, (2893), 50 states have internal predecessors, (2893), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:47:08,801 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 51 states, 51 states have (on average 70.0) internal successors, (3570), 51 states have internal predecessors, (3570), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:47:08,803 INFO L81 ComplementDD]: Finished complementDD. Result has 51 states, 51 states have (on average 70.0) internal successors, (3570), 51 states have internal predecessors, (3570), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:47:08,804 INFO L175 Difference]: Start difference. First operand has 220 places, 193 transitions, 2781 flow. Second operand 50 states and 2893 transitions. [2022-11-20 11:47:08,804 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 260 places, 322 transitions, 9410 flow [2022-11-20 11:47:09,027 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 240 places, 322 transitions, 6914 flow, removed 1224 selfloop flow, removed 20 redundant places. [2022-11-20 11:47:09,041 INFO L231 Difference]: Finished difference. Result has 271 places, 254 transitions, 4105 flow [2022-11-20 11:47:09,041 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=70, PETRI_DIFFERENCE_MINUEND_FLOW=2187, PETRI_DIFFERENCE_MINUEND_PLACES=191, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=193, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=125, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=64, PETRI_DIFFERENCE_SUBTRAHEND_STATES=50, PETRI_FLOW=4105, PETRI_PLACES=271, PETRI_TRANSITIONS=254} [2022-11-20 11:47:09,044 INFO L288 CegarLoopForPetriNet]: 70 programPoint places, 201 predicate places. [2022-11-20 11:47:09,045 INFO L495 AbstractCegarLoop]: Abstraction has has 271 places, 254 transitions, 4105 flow [2022-11-20 11:47:09,046 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 56.32) internal successors, (1408), 25 states have internal predecessors, (1408), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:47:09,046 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:47:09,046 INFO L209 CegarLoopForPetriNet]: trace histogram [10, 10, 9, 9, 9, 8, 8, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:47:09,059 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27cf5266-8cde-4ea0-9b5b-fb69db61a10b/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-11-20 11:47:09,253 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27cf5266-8cde-4ea0-9b5b-fb69db61a10b/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2022-11-20 11:47:09,254 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-20 11:47:09,254 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:47:09,255 INFO L85 PathProgramCache]: Analyzing trace with hash 992522128, now seen corresponding path program 5 times [2022-11-20 11:47:09,255 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:47:09,255 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1595514920] [2022-11-20 11:47:09,255 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:47:09,256 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:47:09,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:47:10,189 INFO L134 CoverageAnalysis]: Checked inductivity of 317 backedges. 0 proven. 312 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-20 11:47:10,189 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:47:10,189 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1595514920] [2022-11-20 11:47:10,189 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1595514920] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 11:47:10,190 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [559708421] [2022-11-20 11:47:10,190 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-11-20 11:47:10,190 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:47:10,190 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27cf5266-8cde-4ea0-9b5b-fb69db61a10b/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:47:10,192 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27cf5266-8cde-4ea0-9b5b-fb69db61a10b/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 11:47:10,196 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27cf5266-8cde-4ea0-9b5b-fb69db61a10b/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-20 11:47:10,339 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 10 check-sat command(s) [2022-11-20 11:47:10,340 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 11:47:10,342 INFO L263 TraceCheckSpWp]: Trace formula consists of 256 conjuncts, 23 conjunts are in the unsatisfiable core [2022-11-20 11:47:10,346 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:47:10,865 INFO L134 CoverageAnalysis]: Checked inductivity of 317 backedges. 0 proven. 312 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-20 11:47:10,865 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 11:47:11,948 INFO L134 CoverageAnalysis]: Checked inductivity of 317 backedges. 0 proven. 312 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-20 11:47:11,948 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [559708421] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 11:47:11,948 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-20 11:47:11,949 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 22, 22] total 29 [2022-11-20 11:47:11,949 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1906458206] [2022-11-20 11:47:11,949 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-20 11:47:11,950 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2022-11-20 11:47:11,950 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:47:11,951 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2022-11-20 11:47:11,952 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=193, Invalid=619, Unknown=0, NotChecked=0, Total=812 [2022-11-20 11:47:11,954 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 70 [2022-11-20 11:47:11,957 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 271 places, 254 transitions, 4105 flow. Second operand has 29 states, 29 states have (on average 56.37931034482759) internal successors, (1635), 29 states have internal predecessors, (1635), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:47:11,957 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:47:11,958 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 70 [2022-11-20 11:47:11,958 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:47:13,542 INFO L130 PetriNetUnfolder]: 230/1506 cut-off events. [2022-11-20 11:47:13,542 INFO L131 PetriNetUnfolder]: For 106278/106633 co-relation queries the response was YES. [2022-11-20 11:47:13,568 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9940 conditions, 1506 events. 230/1506 cut-off events. For 106278/106633 co-relation queries the response was YES. Maximal size of possible extension queue 41. Compared 9567 event pairs, 0 based on Foata normal form. 27/1372 useless extension candidates. Maximal degree in co-relation 9808. Up to 310 conditions per place. [2022-11-20 11:47:13,591 INFO L137 encePairwiseOnDemand]: 64/70 looper letters, 208 selfloop transitions, 47 changer transitions 26/326 dead transitions. [2022-11-20 11:47:13,592 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 296 places, 326 transitions, 9251 flow [2022-11-20 11:47:13,592 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2022-11-20 11:47:13,593 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2022-11-20 11:47:13,603 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 2134 transitions. [2022-11-20 11:47:13,609 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8239382239382239 [2022-11-20 11:47:13,609 INFO L72 ComplementDD]: Start complementDD. Operand 37 states and 2134 transitions. [2022-11-20 11:47:13,609 INFO L73 IsDeterministic]: Start isDeterministic. Operand 37 states and 2134 transitions. [2022-11-20 11:47:13,611 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:47:13,611 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 37 states and 2134 transitions. [2022-11-20 11:47:13,616 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 38 states, 37 states have (on average 57.67567567567568) internal successors, (2134), 37 states have internal predecessors, (2134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:47:13,622 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 38 states, 38 states have (on average 70.0) internal successors, (2660), 38 states have internal predecessors, (2660), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:47:13,632 INFO L81 ComplementDD]: Finished complementDD. Result has 38 states, 38 states have (on average 70.0) internal successors, (2660), 38 states have internal predecessors, (2660), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:47:13,643 INFO L175 Difference]: Start difference. First operand has 271 places, 254 transitions, 4105 flow. Second operand 37 states and 2134 transitions. [2022-11-20 11:47:13,643 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 296 places, 326 transitions, 9251 flow [2022-11-20 11:47:14,080 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 278 places, 326 transitions, 7432 flow, removed 884 selfloop flow, removed 18 redundant places. [2022-11-20 11:47:14,090 INFO L231 Difference]: Finished difference. Result has 297 places, 272 transitions, 4055 flow [2022-11-20 11:47:14,091 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=70, PETRI_DIFFERENCE_MINUEND_FLOW=3268, PETRI_DIFFERENCE_MINUEND_PLACES=242, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=254, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=217, PETRI_DIFFERENCE_SUBTRAHEND_STATES=37, PETRI_FLOW=4055, PETRI_PLACES=297, PETRI_TRANSITIONS=272} [2022-11-20 11:47:14,092 INFO L288 CegarLoopForPetriNet]: 70 programPoint places, 227 predicate places. [2022-11-20 11:47:14,092 INFO L495 AbstractCegarLoop]: Abstraction has has 297 places, 272 transitions, 4055 flow [2022-11-20 11:47:14,094 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 56.37931034482759) internal successors, (1635), 29 states have internal predecessors, (1635), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:47:14,094 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:47:14,094 INFO L209 CegarLoopForPetriNet]: trace histogram [10, 10, 9, 9, 9, 8, 8, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:47:14,108 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27cf5266-8cde-4ea0-9b5b-fb69db61a10b/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-11-20 11:47:14,301 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27cf5266-8cde-4ea0-9b5b-fb69db61a10b/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2022-11-20 11:47:14,301 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-20 11:47:14,302 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:47:14,302 INFO L85 PathProgramCache]: Analyzing trace with hash -1598014154, now seen corresponding path program 6 times [2022-11-20 11:47:14,302 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:47:14,302 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [461393277] [2022-11-20 11:47:14,302 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:47:14,303 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:47:14,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:47:15,177 INFO L134 CoverageAnalysis]: Checked inductivity of 317 backedges. 0 proven. 312 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-20 11:47:15,178 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:47:15,178 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [461393277] [2022-11-20 11:47:15,178 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [461393277] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 11:47:15,178 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [866544627] [2022-11-20 11:47:15,178 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-11-20 11:47:15,179 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:47:15,179 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27cf5266-8cde-4ea0-9b5b-fb69db61a10b/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:47:15,181 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27cf5266-8cde-4ea0-9b5b-fb69db61a10b/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 11:47:15,188 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27cf5266-8cde-4ea0-9b5b-fb69db61a10b/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-11-20 11:47:15,358 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 12 check-sat command(s) [2022-11-20 11:47:15,359 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 11:47:15,362 INFO L263 TraceCheckSpWp]: Trace formula consists of 256 conjuncts, 23 conjunts are in the unsatisfiable core [2022-11-20 11:47:15,367 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:47:15,936 INFO L134 CoverageAnalysis]: Checked inductivity of 317 backedges. 0 proven. 312 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-20 11:47:15,936 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 11:47:17,096 INFO L134 CoverageAnalysis]: Checked inductivity of 317 backedges. 0 proven. 312 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-20 11:47:17,097 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [866544627] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 11:47:17,097 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-20 11:47:17,097 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 22, 22] total 31 [2022-11-20 11:47:17,098 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1565945830] [2022-11-20 11:47:17,098 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-20 11:47:17,099 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2022-11-20 11:47:17,099 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:47:17,100 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2022-11-20 11:47:17,101 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=189, Invalid=741, Unknown=0, NotChecked=0, Total=930 [2022-11-20 11:47:17,103 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 70 [2022-11-20 11:47:17,106 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 297 places, 272 transitions, 4055 flow. Second operand has 31 states, 31 states have (on average 56.41935483870968) internal successors, (1749), 31 states have internal predecessors, (1749), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:47:17,106 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:47:17,106 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 70 [2022-11-20 11:47:17,107 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:47:19,508 INFO L130 PetriNetUnfolder]: 288/2028 cut-off events. [2022-11-20 11:47:19,508 INFO L131 PetriNetUnfolder]: For 158041/158447 co-relation queries the response was YES. [2022-11-20 11:47:19,548 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13065 conditions, 2028 events. 288/2028 cut-off events. For 158041/158447 co-relation queries the response was YES. Maximal size of possible extension queue 44. Compared 14386 event pairs, 0 based on Foata normal form. 35/1844 useless extension candidates. Maximal degree in co-relation 12925. Up to 424 conditions per place. [2022-11-20 11:47:19,586 INFO L137 encePairwiseOnDemand]: 63/70 looper letters, 164 selfloop transitions, 161 changer transitions 26/396 dead transitions. [2022-11-20 11:47:19,586 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 331 places, 396 transitions, 10108 flow [2022-11-20 11:47:19,587 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2022-11-20 11:47:19,587 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2022-11-20 11:47:19,592 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 2535 transitions. [2022-11-20 11:47:19,596 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.823051948051948 [2022-11-20 11:47:19,597 INFO L72 ComplementDD]: Start complementDD. Operand 44 states and 2535 transitions. [2022-11-20 11:47:19,597 INFO L73 IsDeterministic]: Start isDeterministic. Operand 44 states and 2535 transitions. [2022-11-20 11:47:19,599 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:47:19,601 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 44 states and 2535 transitions. [2022-11-20 11:47:19,608 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 45 states, 44 states have (on average 57.61363636363637) internal successors, (2535), 44 states have internal predecessors, (2535), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:47:19,614 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 45 states, 45 states have (on average 70.0) internal successors, (3150), 45 states have internal predecessors, (3150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:47:19,616 INFO L81 ComplementDD]: Finished complementDD. Result has 45 states, 45 states have (on average 70.0) internal successors, (3150), 45 states have internal predecessors, (3150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:47:19,617 INFO L175 Difference]: Start difference. First operand has 297 places, 272 transitions, 4055 flow. Second operand 44 states and 2535 transitions. [2022-11-20 11:47:19,617 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 331 places, 396 transitions, 10108 flow [2022-11-20 11:47:20,132 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 308 places, 396 transitions, 9187 flow, removed 435 selfloop flow, removed 23 redundant places. [2022-11-20 11:47:20,144 INFO L231 Difference]: Finished difference. Result has 329 places, 329 transitions, 5357 flow [2022-11-20 11:47:20,144 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=70, PETRI_DIFFERENCE_MINUEND_FLOW=3534, PETRI_DIFFERENCE_MINUEND_PLACES=265, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=272, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=112, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=143, PETRI_DIFFERENCE_SUBTRAHEND_STATES=44, PETRI_FLOW=5357, PETRI_PLACES=329, PETRI_TRANSITIONS=329} [2022-11-20 11:47:20,145 INFO L288 CegarLoopForPetriNet]: 70 programPoint places, 259 predicate places. [2022-11-20 11:47:20,145 INFO L495 AbstractCegarLoop]: Abstraction has has 329 places, 329 transitions, 5357 flow [2022-11-20 11:47:20,146 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 56.41935483870968) internal successors, (1749), 31 states have internal predecessors, (1749), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:47:20,147 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:47:20,147 INFO L209 CegarLoopForPetriNet]: trace histogram [10, 10, 9, 9, 9, 8, 8, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:47:20,159 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27cf5266-8cde-4ea0-9b5b-fb69db61a10b/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-11-20 11:47:20,354 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27cf5266-8cde-4ea0-9b5b-fb69db61a10b/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:47:20,355 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-20 11:47:20,356 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:47:20,356 INFO L85 PathProgramCache]: Analyzing trace with hash -1923481798, now seen corresponding path program 7 times [2022-11-20 11:47:20,356 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:47:20,356 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [794298084] [2022-11-20 11:47:20,357 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:47:20,357 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:47:20,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:47:21,115 INFO L134 CoverageAnalysis]: Checked inductivity of 317 backedges. 0 proven. 312 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-20 11:47:21,115 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:47:21,115 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [794298084] [2022-11-20 11:47:21,115 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [794298084] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 11:47:21,115 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1700175888] [2022-11-20 11:47:21,116 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-11-20 11:47:21,116 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:47:21,116 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27cf5266-8cde-4ea0-9b5b-fb69db61a10b/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:47:21,118 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27cf5266-8cde-4ea0-9b5b-fb69db61a10b/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 11:47:21,139 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27cf5266-8cde-4ea0-9b5b-fb69db61a10b/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-11-20 11:47:21,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:47:21,266 INFO L263 TraceCheckSpWp]: Trace formula consists of 256 conjuncts, 23 conjunts are in the unsatisfiable core [2022-11-20 11:47:21,270 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:47:21,732 INFO L134 CoverageAnalysis]: Checked inductivity of 317 backedges. 0 proven. 312 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-20 11:47:21,732 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 11:47:22,623 INFO L134 CoverageAnalysis]: Checked inductivity of 317 backedges. 0 proven. 312 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-20 11:47:22,624 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1700175888] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 11:47:22,624 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-20 11:47:22,624 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 22, 22] total 34 [2022-11-20 11:47:22,625 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [149334135] [2022-11-20 11:47:22,625 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-20 11:47:22,626 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2022-11-20 11:47:22,626 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:47:22,627 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2022-11-20 11:47:22,628 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=189, Invalid=933, Unknown=0, NotChecked=0, Total=1122 [2022-11-20 11:47:22,631 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 70 [2022-11-20 11:47:22,634 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 329 places, 329 transitions, 5357 flow. Second operand has 34 states, 34 states have (on average 56.38235294117647) internal successors, (1917), 34 states have internal predecessors, (1917), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:47:22,635 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:47:22,635 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 70 [2022-11-20 11:47:22,635 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:47:25,631 INFO L130 PetriNetUnfolder]: 346/2488 cut-off events. [2022-11-20 11:47:25,631 INFO L131 PetriNetUnfolder]: For 241157/241645 co-relation queries the response was YES. [2022-11-20 11:47:25,674 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17426 conditions, 2488 events. 346/2488 cut-off events. For 241157/241645 co-relation queries the response was YES. Maximal size of possible extension queue 50. Compared 19008 event pairs, 0 based on Foata normal form. 42/2266 useless extension candidates. Maximal degree in co-relation 17272. Up to 528 conditions per place. [2022-11-20 11:47:25,722 INFO L137 encePairwiseOnDemand]: 63/70 looper letters, 94 selfloop transitions, 298 changer transitions 26/463 dead transitions. [2022-11-20 11:47:25,723 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 371 places, 463 transitions, 13439 flow [2022-11-20 11:47:25,723 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2022-11-20 11:47:25,724 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52 states. [2022-11-20 11:47:25,727 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 3000 transitions. [2022-11-20 11:47:25,729 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8241758241758241 [2022-11-20 11:47:25,730 INFO L72 ComplementDD]: Start complementDD. Operand 52 states and 3000 transitions. [2022-11-20 11:47:25,730 INFO L73 IsDeterministic]: Start isDeterministic. Operand 52 states and 3000 transitions. [2022-11-20 11:47:25,732 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:47:25,732 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 52 states and 3000 transitions. [2022-11-20 11:47:25,739 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 53 states, 52 states have (on average 57.69230769230769) internal successors, (3000), 52 states have internal predecessors, (3000), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:47:25,746 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 53 states, 53 states have (on average 70.0) internal successors, (3710), 53 states have internal predecessors, (3710), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:47:25,749 INFO L81 ComplementDD]: Finished complementDD. Result has 53 states, 53 states have (on average 70.0) internal successors, (3710), 53 states have internal predecessors, (3710), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:47:25,749 INFO L175 Difference]: Start difference. First operand has 329 places, 329 transitions, 5357 flow. Second operand 52 states and 3000 transitions. [2022-11-20 11:47:25,749 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 371 places, 463 transitions, 13439 flow [2022-11-20 11:47:26,403 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 341 places, 463 transitions, 11873 flow, removed 704 selfloop flow, removed 30 redundant places. [2022-11-20 11:47:26,415 INFO L231 Difference]: Finished difference. Result has 363 places, 390 transitions, 7126 flow [2022-11-20 11:47:26,416 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=70, PETRI_DIFFERENCE_MINUEND_FLOW=4619, PETRI_DIFFERENCE_MINUEND_PLACES=290, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=329, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=245, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=70, PETRI_DIFFERENCE_SUBTRAHEND_STATES=52, PETRI_FLOW=7126, PETRI_PLACES=363, PETRI_TRANSITIONS=390} [2022-11-20 11:47:26,416 INFO L288 CegarLoopForPetriNet]: 70 programPoint places, 293 predicate places. [2022-11-20 11:47:26,417 INFO L495 AbstractCegarLoop]: Abstraction has has 363 places, 390 transitions, 7126 flow [2022-11-20 11:47:26,418 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 56.38235294117647) internal successors, (1917), 34 states have internal predecessors, (1917), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:47:26,418 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:47:26,419 INFO L209 CegarLoopForPetriNet]: trace histogram [10, 10, 9, 9, 9, 8, 8, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:47:26,433 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27cf5266-8cde-4ea0-9b5b-fb69db61a10b/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-11-20 11:47:26,627 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27cf5266-8cde-4ea0-9b5b-fb69db61a10b/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:47:26,628 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-20 11:47:26,629 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:47:26,629 INFO L85 PathProgramCache]: Analyzing trace with hash -1659446404, now seen corresponding path program 8 times [2022-11-20 11:47:26,629 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:47:26,630 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1151425869] [2022-11-20 11:47:26,630 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:47:26,630 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:47:26,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:47:27,411 INFO L134 CoverageAnalysis]: Checked inductivity of 317 backedges. 0 proven. 312 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-20 11:47:27,411 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:47:27,411 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1151425869] [2022-11-20 11:47:27,411 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1151425869] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 11:47:27,412 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [658786294] [2022-11-20 11:47:27,412 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-20 11:47:27,412 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:47:27,412 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27cf5266-8cde-4ea0-9b5b-fb69db61a10b/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:47:27,414 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27cf5266-8cde-4ea0-9b5b-fb69db61a10b/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 11:47:27,417 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27cf5266-8cde-4ea0-9b5b-fb69db61a10b/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-11-20 11:47:27,570 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-20 11:47:27,571 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 11:47:27,573 INFO L263 TraceCheckSpWp]: Trace formula consists of 256 conjuncts, 23 conjunts are in the unsatisfiable core [2022-11-20 11:47:27,576 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:47:27,984 INFO L134 CoverageAnalysis]: Checked inductivity of 317 backedges. 0 proven. 312 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-20 11:47:27,985 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 11:47:28,785 INFO L134 CoverageAnalysis]: Checked inductivity of 317 backedges. 0 proven. 312 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-20 11:47:28,786 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [658786294] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 11:47:28,786 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-20 11:47:28,786 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 22, 22] total 35 [2022-11-20 11:47:28,787 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [478402011] [2022-11-20 11:47:28,787 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-20 11:47:28,788 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2022-11-20 11:47:28,788 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:47:28,789 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2022-11-20 11:47:28,789 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=193, Invalid=997, Unknown=0, NotChecked=0, Total=1190 [2022-11-20 11:47:28,792 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 70 [2022-11-20 11:47:28,795 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 363 places, 390 transitions, 7126 flow. Second operand has 35 states, 35 states have (on average 56.371428571428574) internal successors, (1973), 35 states have internal predecessors, (1973), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:47:28,796 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:47:28,796 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 70 [2022-11-20 11:47:28,796 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:47:32,819 INFO L130 PetriNetUnfolder]: 414/2934 cut-off events. [2022-11-20 11:47:32,819 INFO L131 PetriNetUnfolder]: For 378475/378851 co-relation queries the response was YES. [2022-11-20 11:47:32,874 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22735 conditions, 2934 events. 414/2934 cut-off events. For 378475/378851 co-relation queries the response was YES. Maximal size of possible extension queue 61. Compared 23625 event pairs, 0 based on Foata normal form. 53/2677 useless extension candidates. Maximal degree in co-relation 22567. Up to 624 conditions per place. [2022-11-20 11:47:32,919 INFO L137 encePairwiseOnDemand]: 63/70 looper letters, 82 selfloop transitions, 384 changer transitions 29/540 dead transitions. [2022-11-20 11:47:32,920 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 413 places, 540 transitions, 17041 flow [2022-11-20 11:47:32,920 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2022-11-20 11:47:32,920 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 60 states. [2022-11-20 11:47:32,929 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 3465 transitions. [2022-11-20 11:47:32,932 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.825 [2022-11-20 11:47:32,932 INFO L72 ComplementDD]: Start complementDD. Operand 60 states and 3465 transitions. [2022-11-20 11:47:32,933 INFO L73 IsDeterministic]: Start isDeterministic. Operand 60 states and 3465 transitions. [2022-11-20 11:47:32,936 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:47:32,937 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 60 states and 3465 transitions. [2022-11-20 11:47:32,947 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 61 states, 60 states have (on average 57.75) internal successors, (3465), 60 states have internal predecessors, (3465), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:47:32,962 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 61 states, 61 states have (on average 70.0) internal successors, (4270), 61 states have internal predecessors, (4270), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:47:32,964 INFO L81 ComplementDD]: Finished complementDD. Result has 61 states, 61 states have (on average 70.0) internal successors, (4270), 61 states have internal predecessors, (4270), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:47:32,966 INFO L175 Difference]: Start difference. First operand has 363 places, 390 transitions, 7126 flow. Second operand 60 states and 3465 transitions. [2022-11-20 11:47:32,966 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 413 places, 540 transitions, 17041 flow [2022-11-20 11:47:34,004 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 379 places, 540 transitions, 14327 flow, removed 1201 selfloop flow, removed 34 redundant places. [2022-11-20 11:47:34,062 INFO L231 Difference]: Finished difference. Result has 404 places, 459 transitions, 8646 flow [2022-11-20 11:47:34,063 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=70, PETRI_DIFFERENCE_MINUEND_FLOW=5778, PETRI_DIFFERENCE_MINUEND_PLACES=320, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=390, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=322, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=64, PETRI_DIFFERENCE_SUBTRAHEND_STATES=60, PETRI_FLOW=8646, PETRI_PLACES=404, PETRI_TRANSITIONS=459} [2022-11-20 11:47:34,063 INFO L288 CegarLoopForPetriNet]: 70 programPoint places, 334 predicate places. [2022-11-20 11:47:34,063 INFO L495 AbstractCegarLoop]: Abstraction has has 404 places, 459 transitions, 8646 flow [2022-11-20 11:47:34,064 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 35 states have (on average 56.371428571428574) internal successors, (1973), 35 states have internal predecessors, (1973), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:47:34,064 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:47:34,065 INFO L209 CegarLoopForPetriNet]: trace histogram [10, 10, 9, 9, 9, 9, 9, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:47:34,076 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27cf5266-8cde-4ea0-9b5b-fb69db61a10b/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-11-20 11:47:34,275 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27cf5266-8cde-4ea0-9b5b-fb69db61a10b/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2022-11-20 11:47:34,276 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-20 11:47:34,277 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:47:34,277 INFO L85 PathProgramCache]: Analyzing trace with hash 592571080, now seen corresponding path program 9 times [2022-11-20 11:47:34,277 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:47:34,278 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [56925731] [2022-11-20 11:47:34,278 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:47:34,278 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:47:34,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:47:35,279 INFO L134 CoverageAnalysis]: Checked inductivity of 354 backedges. 0 proven. 349 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-20 11:47:35,279 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:47:35,279 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [56925731] [2022-11-20 11:47:35,279 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [56925731] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 11:47:35,280 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2052561001] [2022-11-20 11:47:35,280 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-20 11:47:35,280 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:47:35,280 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27cf5266-8cde-4ea0-9b5b-fb69db61a10b/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:47:35,282 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27cf5266-8cde-4ea0-9b5b-fb69db61a10b/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 11:47:35,323 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27cf5266-8cde-4ea0-9b5b-fb69db61a10b/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-11-20 11:47:35,450 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 10 check-sat command(s) [2022-11-20 11:47:35,450 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 11:47:35,452 INFO L263 TraceCheckSpWp]: Trace formula consists of 264 conjuncts, 24 conjunts are in the unsatisfiable core [2022-11-20 11:47:35,455 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:47:35,852 INFO L134 CoverageAnalysis]: Checked inductivity of 354 backedges. 0 proven. 349 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-20 11:47:35,852 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 11:47:36,385 INFO L134 CoverageAnalysis]: Checked inductivity of 354 backedges. 0 proven. 349 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-20 11:47:36,386 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2052561001] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 11:47:36,386 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-20 11:47:36,386 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23, 23] total 27 [2022-11-20 11:47:36,387 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1999071878] [2022-11-20 11:47:36,387 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-20 11:47:36,388 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-11-20 11:47:36,388 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:47:36,389 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-11-20 11:47:36,389 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=147, Invalid=555, Unknown=0, NotChecked=0, Total=702 [2022-11-20 11:47:36,394 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 70 [2022-11-20 11:47:36,396 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 404 places, 459 transitions, 8646 flow. Second operand has 27 states, 27 states have (on average 56.407407407407405) internal successors, (1523), 27 states have internal predecessors, (1523), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:47:36,397 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:47:36,397 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 70 [2022-11-20 11:47:36,397 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:47:39,550 INFO L130 PetriNetUnfolder]: 423/2988 cut-off events. [2022-11-20 11:47:39,550 INFO L131 PetriNetUnfolder]: For 441259/441573 co-relation queries the response was YES. [2022-11-20 11:47:39,601 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24321 conditions, 2988 events. 423/2988 cut-off events. For 441259/441573 co-relation queries the response was YES. Maximal size of possible extension queue 58. Compared 23991 event pairs, 0 based on Foata normal form. 54/2728 useless extension candidates. Maximal degree in co-relation 24136. Up to 638 conditions per place. [2022-11-20 11:47:39,651 INFO L137 encePairwiseOnDemand]: 63/70 looper letters, 89 selfloop transitions, 388 changer transitions 14/536 dead transitions. [2022-11-20 11:47:39,651 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 444 places, 536 transitions, 16379 flow [2022-11-20 11:47:39,652 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2022-11-20 11:47:39,652 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51 states. [2022-11-20 11:47:39,656 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 2942 transitions. [2022-11-20 11:47:39,658 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8240896358543417 [2022-11-20 11:47:39,658 INFO L72 ComplementDD]: Start complementDD. Operand 51 states and 2942 transitions. [2022-11-20 11:47:39,659 INFO L73 IsDeterministic]: Start isDeterministic. Operand 51 states and 2942 transitions. [2022-11-20 11:47:39,660 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:47:39,660 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 51 states and 2942 transitions. [2022-11-20 11:47:39,666 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 52 states, 51 states have (on average 57.68627450980392) internal successors, (2942), 51 states have internal predecessors, (2942), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:47:39,672 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 52 states, 52 states have (on average 70.0) internal successors, (3640), 52 states have internal predecessors, (3640), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:47:39,674 INFO L81 ComplementDD]: Finished complementDD. Result has 52 states, 52 states have (on average 70.0) internal successors, (3640), 52 states have internal predecessors, (3640), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:47:39,675 INFO L175 Difference]: Start difference. First operand has 404 places, 459 transitions, 8646 flow. Second operand 51 states and 2942 transitions. [2022-11-20 11:47:39,675 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 444 places, 536 transitions, 16379 flow [2022-11-20 11:47:40,974 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 404 places, 536 transitions, 14015 flow, removed 975 selfloop flow, removed 40 redundant places. [2022-11-20 11:47:40,988 INFO L231 Difference]: Finished difference. Result has 416 places, 478 transitions, 8967 flow [2022-11-20 11:47:40,989 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=70, PETRI_DIFFERENCE_MINUEND_FLOW=7122, PETRI_DIFFERENCE_MINUEND_PLACES=354, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=459, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=370, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=78, PETRI_DIFFERENCE_SUBTRAHEND_STATES=51, PETRI_FLOW=8967, PETRI_PLACES=416, PETRI_TRANSITIONS=478} [2022-11-20 11:47:40,990 INFO L288 CegarLoopForPetriNet]: 70 programPoint places, 346 predicate places. [2022-11-20 11:47:40,991 INFO L495 AbstractCegarLoop]: Abstraction has has 416 places, 478 transitions, 8967 flow [2022-11-20 11:47:40,992 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 56.407407407407405) internal successors, (1523), 27 states have internal predecessors, (1523), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:47:40,993 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:47:40,993 INFO L209 CegarLoopForPetriNet]: trace histogram [11, 11, 10, 10, 10, 10, 10, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:47:41,010 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27cf5266-8cde-4ea0-9b5b-fb69db61a10b/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-11-20 11:47:41,200 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27cf5266-8cde-4ea0-9b5b-fb69db61a10b/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2022-11-20 11:47:41,200 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-20 11:47:41,201 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:47:41,201 INFO L85 PathProgramCache]: Analyzing trace with hash 596124818, now seen corresponding path program 10 times [2022-11-20 11:47:41,201 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:47:41,201 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1626401636] [2022-11-20 11:47:41,202 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:47:41,202 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:47:41,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:47:41,988 INFO L134 CoverageAnalysis]: Checked inductivity of 443 backedges. 386 proven. 53 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-20 11:47:41,988 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:47:41,989 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1626401636] [2022-11-20 11:47:41,989 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1626401636] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 11:47:41,989 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2064935951] [2022-11-20 11:47:41,989 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-20 11:47:41,989 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:47:41,990 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27cf5266-8cde-4ea0-9b5b-fb69db61a10b/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:47:41,991 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27cf5266-8cde-4ea0-9b5b-fb69db61a10b/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 11:47:41,997 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27cf5266-8cde-4ea0-9b5b-fb69db61a10b/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-11-20 11:47:42,132 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-20 11:47:42,132 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 11:47:42,134 INFO L263 TraceCheckSpWp]: Trace formula consists of 270 conjuncts, 22 conjunts are in the unsatisfiable core [2022-11-20 11:47:42,137 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:47:42,378 INFO L134 CoverageAnalysis]: Checked inductivity of 443 backedges. 439 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-20 11:47:42,378 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 11:47:42,378 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2064935951] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:47:42,379 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-20 11:47:42,379 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [23] imperfect sequences [23] total 25 [2022-11-20 11:47:42,379 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1264342343] [2022-11-20 11:47:42,379 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:47:42,380 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-11-20 11:47:42,380 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:47:42,381 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-11-20 11:47:42,381 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=149, Invalid=451, Unknown=0, NotChecked=0, Total=600 [2022-11-20 11:47:42,383 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 58 out of 70 [2022-11-20 11:47:42,385 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 416 places, 478 transitions, 8967 flow. Second operand has 23 states, 23 states have (on average 59.91304347826087) internal successors, (1378), 23 states have internal predecessors, (1378), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:47:42,385 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:47:42,385 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 58 of 70 [2022-11-20 11:47:42,386 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:47:50,223 INFO L130 PetriNetUnfolder]: 2340/12790 cut-off events. [2022-11-20 11:47:50,223 INFO L131 PetriNetUnfolder]: For 1578409/1578599 co-relation queries the response was YES. [2022-11-20 11:47:50,600 INFO L83 FinitePrefix]: Finished finitePrefix Result has 93355 conditions, 12790 events. 2340/12790 cut-off events. For 1578409/1578599 co-relation queries the response was YES. Maximal size of possible extension queue 315. Compared 148637 event pairs, 554 based on Foata normal form. 41/11404 useless extension candidates. Maximal degree in co-relation 93203. Up to 2604 conditions per place. [2022-11-20 11:47:50,647 INFO L137 encePairwiseOnDemand]: 64/70 looper letters, 14 selfloop transitions, 41 changer transitions 339/531 dead transitions. [2022-11-20 11:47:50,647 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 438 places, 531 transitions, 8638 flow [2022-11-20 11:47:50,648 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2022-11-20 11:47:50,648 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2022-11-20 11:47:50,650 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 2000 transitions. [2022-11-20 11:47:50,651 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8658008658008658 [2022-11-20 11:47:50,652 INFO L72 ComplementDD]: Start complementDD. Operand 33 states and 2000 transitions. [2022-11-20 11:47:50,652 INFO L73 IsDeterministic]: Start isDeterministic. Operand 33 states and 2000 transitions. [2022-11-20 11:47:50,653 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:47:50,653 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 33 states and 2000 transitions. [2022-11-20 11:47:50,657 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 34 states, 33 states have (on average 60.60606060606061) internal successors, (2000), 33 states have internal predecessors, (2000), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:47:50,661 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 34 states, 34 states have (on average 70.0) internal successors, (2380), 34 states have internal predecessors, (2380), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:47:50,662 INFO L81 ComplementDD]: Finished complementDD. Result has 34 states, 34 states have (on average 70.0) internal successors, (2380), 34 states have internal predecessors, (2380), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:47:50,663 INFO L175 Difference]: Start difference. First operand has 416 places, 478 transitions, 8967 flow. Second operand 33 states and 2000 transitions. [2022-11-20 11:47:50,663 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 438 places, 531 transitions, 8638 flow [2022-11-20 11:47:55,702 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 404 places, 531 transitions, 7808 flow, removed 278 selfloop flow, removed 34 redundant places. [2022-11-20 11:47:55,712 INFO L231 Difference]: Finished difference. Result has 405 places, 182 transitions, 1828 flow [2022-11-20 11:47:55,712 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=70, PETRI_DIFFERENCE_MINUEND_FLOW=7422, PETRI_DIFFERENCE_MINUEND_PLACES=372, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=454, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=449, PETRI_DIFFERENCE_SUBTRAHEND_STATES=33, PETRI_FLOW=1828, PETRI_PLACES=405, PETRI_TRANSITIONS=182} [2022-11-20 11:47:55,713 INFO L288 CegarLoopForPetriNet]: 70 programPoint places, 335 predicate places. [2022-11-20 11:47:55,713 INFO L495 AbstractCegarLoop]: Abstraction has has 405 places, 182 transitions, 1828 flow [2022-11-20 11:47:55,714 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 59.91304347826087) internal successors, (1378), 23 states have internal predecessors, (1378), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:47:55,714 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:47:55,714 INFO L209 CegarLoopForPetriNet]: trace histogram [11, 11, 10, 10, 10, 10, 10, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:47:55,721 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27cf5266-8cde-4ea0-9b5b-fb69db61a10b/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2022-11-20 11:47:55,920 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27cf5266-8cde-4ea0-9b5b-fb69db61a10b/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2022-11-20 11:47:55,921 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-20 11:47:55,921 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:47:55,921 INFO L85 PathProgramCache]: Analyzing trace with hash 665756159, now seen corresponding path program 11 times [2022-11-20 11:47:55,922 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:47:55,922 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [89129250] [2022-11-20 11:47:55,922 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:47:55,922 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:47:55,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:47:56,637 INFO L134 CoverageAnalysis]: Checked inductivity of 443 backedges. 384 proven. 55 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-20 11:47:56,637 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:47:56,638 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [89129250] [2022-11-20 11:47:56,638 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [89129250] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 11:47:56,638 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1484112894] [2022-11-20 11:47:56,638 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-11-20 11:47:56,638 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:47:56,639 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27cf5266-8cde-4ea0-9b5b-fb69db61a10b/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:47:56,643 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27cf5266-8cde-4ea0-9b5b-fb69db61a10b/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 11:47:56,654 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27cf5266-8cde-4ea0-9b5b-fb69db61a10b/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-11-20 11:47:56,805 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 11 check-sat command(s) [2022-11-20 11:47:56,806 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 11:47:56,808 INFO L263 TraceCheckSpWp]: Trace formula consists of 280 conjuncts, 22 conjunts are in the unsatisfiable core [2022-11-20 11:47:56,812 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:47:57,067 INFO L134 CoverageAnalysis]: Checked inductivity of 443 backedges. 439 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-20 11:47:57,067 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 11:47:57,068 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1484112894] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:47:57,068 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-20 11:47:57,069 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [23] imperfect sequences [23] total 25 [2022-11-20 11:47:57,069 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [554283576] [2022-11-20 11:47:57,069 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:47:57,070 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-11-20 11:47:57,070 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:47:57,071 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-11-20 11:47:57,071 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=149, Invalid=451, Unknown=0, NotChecked=0, Total=600 [2022-11-20 11:47:57,073 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 58 out of 70 [2022-11-20 11:47:57,076 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 405 places, 182 transitions, 1828 flow. Second operand has 23 states, 23 states have (on average 59.91304347826087) internal successors, (1378), 23 states have internal predecessors, (1378), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:47:57,076 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:47:57,076 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 58 of 70 [2022-11-20 11:47:57,076 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:48:02,371 INFO L130 PetriNetUnfolder]: 3131/11785 cut-off events. [2022-11-20 11:48:02,371 INFO L131 PetriNetUnfolder]: For 1149052/1149339 co-relation queries the response was YES. [2022-11-20 11:48:02,706 INFO L83 FinitePrefix]: Finished finitePrefix Result has 88695 conditions, 11785 events. 3131/11785 cut-off events. For 1149052/1149339 co-relation queries the response was YES. Maximal size of possible extension queue 368. Compared 128950 event pairs, 680 based on Foata normal form. 35/10653 useless extension candidates. Maximal degree in co-relation 88553. Up to 2416 conditions per place. [2022-11-20 11:48:02,717 INFO L137 encePairwiseOnDemand]: 64/70 looper letters, 0 selfloop transitions, 0 changer transitions 221/221 dead transitions. [2022-11-20 11:48:02,717 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 364 places, 221 transitions, 1864 flow [2022-11-20 11:48:02,718 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2022-11-20 11:48:02,718 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2022-11-20 11:48:02,720 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 1969 transitions. [2022-11-20 11:48:02,721 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8523809523809524 [2022-11-20 11:48:02,721 INFO L72 ComplementDD]: Start complementDD. Operand 33 states and 1969 transitions. [2022-11-20 11:48:02,722 INFO L73 IsDeterministic]: Start isDeterministic. Operand 33 states and 1969 transitions. [2022-11-20 11:48:02,723 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:48:02,723 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 33 states and 1969 transitions. [2022-11-20 11:48:02,727 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 34 states, 33 states have (on average 59.666666666666664) internal successors, (1969), 33 states have internal predecessors, (1969), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:48:02,730 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 34 states, 34 states have (on average 70.0) internal successors, (2380), 34 states have internal predecessors, (2380), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:48:02,731 INFO L81 ComplementDD]: Finished complementDD. Result has 34 states, 34 states have (on average 70.0) internal successors, (2380), 34 states have internal predecessors, (2380), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:48:02,732 INFO L175 Difference]: Start difference. First operand has 405 places, 182 transitions, 1828 flow. Second operand 33 states and 1969 transitions. [2022-11-20 11:48:02,732 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 364 places, 221 transitions, 1864 flow [2022-11-20 11:48:05,775 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 287 places, 221 transitions, 1417 flow, removed 100 selfloop flow, removed 77 redundant places. [2022-11-20 11:48:05,776 INFO L231 Difference]: Finished difference. Result has 287 places, 0 transitions, 0 flow [2022-11-20 11:48:05,776 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=70, PETRI_DIFFERENCE_MINUEND_FLOW=1217, PETRI_DIFFERENCE_MINUEND_PLACES=255, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=175, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=175, PETRI_DIFFERENCE_SUBTRAHEND_STATES=33, PETRI_FLOW=0, PETRI_PLACES=287, PETRI_TRANSITIONS=0} [2022-11-20 11:48:05,777 INFO L288 CegarLoopForPetriNet]: 70 programPoint places, 217 predicate places. [2022-11-20 11:48:05,777 INFO L495 AbstractCegarLoop]: Abstraction has has 287 places, 0 transitions, 0 flow [2022-11-20 11:48:05,778 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 59.91304347826087) internal successors, (1378), 23 states have internal predecessors, (1378), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:48:05,781 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 3 remaining) [2022-11-20 11:48:05,782 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 3 remaining) [2022-11-20 11:48:05,782 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 3 remaining) [2022-11-20 11:48:05,792 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27cf5266-8cde-4ea0-9b5b-fb69db61a10b/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2022-11-20 11:48:05,989 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27cf5266-8cde-4ea0-9b5b-fb69db61a10b/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:48:05,989 INFO L444 BasicCegarLoop]: Path program histogram: [11, 3, 2, 1, 1, 1] [2022-11-20 11:48:05,993 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-11-20 11:48:05,993 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-20 11:48:05,999 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.11 11:48:05 BasicIcfg [2022-11-20 11:48:05,999 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-20 11:48:05,999 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-20 11:48:06,000 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-20 11:48:06,000 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-20 11:48:06,001 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 11:46:51" (3/4) ... [2022-11-20 11:48:06,004 INFO L137 WitnessPrinter]: Generating witness for correct program [2022-11-20 11:48:06,012 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure t1 [2022-11-20 11:48:06,012 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure t2 [2022-11-20 11:48:06,017 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 15 nodes and edges [2022-11-20 11:48:06,017 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2022-11-20 11:48:06,017 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2022-11-20 11:48:06,018 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2022-11-20 11:48:06,055 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27cf5266-8cde-4ea0-9b5b-fb69db61a10b/bin/uautomizer-ug76WZFUDN/witness.graphml [2022-11-20 11:48:06,055 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-20 11:48:06,055 INFO L158 Benchmark]: Toolchain (without parser) took 76295.68ms. Allocated memory was 138.4MB in the beginning and 8.3GB in the end (delta: 8.1GB). Free memory was 104.6MB in the beginning and 7.2GB in the end (delta: -7.1GB). Peak memory consumption was 1.0GB. Max. memory is 16.1GB. [2022-11-20 11:48:06,056 INFO L158 Benchmark]: CDTParser took 0.34ms. Allocated memory is still 138.4MB. Free memory is still 85.9MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-20 11:48:06,056 INFO L158 Benchmark]: CACSL2BoogieTranslator took 660.64ms. Allocated memory is still 138.4MB. Free memory was 104.6MB in the beginning and 85.7MB in the end (delta: 18.9MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. [2022-11-20 11:48:06,056 INFO L158 Benchmark]: Boogie Procedure Inliner took 83.39ms. Allocated memory is still 138.4MB. Free memory was 85.2MB in the beginning and 83.6MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-20 11:48:06,057 INFO L158 Benchmark]: Boogie Preprocessor took 73.96ms. Allocated memory is still 138.4MB. Free memory was 83.6MB in the beginning and 82.1MB in the end (delta: 1.6MB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-20 11:48:06,057 INFO L158 Benchmark]: RCFGBuilder took 490.19ms. Allocated memory is still 138.4MB. Free memory was 82.1MB in the beginning and 69.5MB in the end (delta: 12.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2022-11-20 11:48:06,058 INFO L158 Benchmark]: TraceAbstraction took 74922.44ms. Allocated memory was 138.4MB in the beginning and 8.3GB in the end (delta: 8.1GB). Free memory was 69.0MB in the beginning and 7.2GB in the end (delta: -7.1GB). Peak memory consumption was 1.4GB. Max. memory is 16.1GB. [2022-11-20 11:48:06,058 INFO L158 Benchmark]: Witness Printer took 55.50ms. Allocated memory is still 8.3GB. Free memory was 7.2GB in the beginning and 7.2GB in the end (delta: 2.1MB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-20 11:48:06,059 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.34ms. Allocated memory is still 138.4MB. Free memory is still 85.9MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 660.64ms. Allocated memory is still 138.4MB. Free memory was 104.6MB in the beginning and 85.7MB in the end (delta: 18.9MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 83.39ms. Allocated memory is still 138.4MB. Free memory was 85.2MB in the beginning and 83.6MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 73.96ms. Allocated memory is still 138.4MB. Free memory was 83.6MB in the beginning and 82.1MB in the end (delta: 1.6MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 490.19ms. Allocated memory is still 138.4MB. Free memory was 82.1MB in the beginning and 69.5MB in the end (delta: 12.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * TraceAbstraction took 74922.44ms. Allocated memory was 138.4MB in the beginning and 8.3GB in the end (delta: 8.1GB). Free memory was 69.0MB in the beginning and 7.2GB in the end (delta: -7.1GB). Peak memory consumption was 1.4GB. Max. memory is 16.1GB. * Witness Printer took 55.50ms. Allocated memory is still 8.3GB. Free memory was 7.2GB in the beginning and 7.2GB in the end (delta: 2.1MB). There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 722]: 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 5 procedures, 88 locations, 3 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: 74.7s, OverallIterations: 19, TraceHistogramMax: 11, PathProgramHistogramMax: 11, EmptinessCheckTime: 0.0s, AutomataDifference: 49.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.2s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 2022 SdHoareTripleChecker+Valid, 3.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 2022 mSDsluCounter, 350 SdHoareTripleChecker+Invalid, 2.7s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 250 mSDsCounter, 500 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 2978 IncrementalHoareTripleChecker+Invalid, 3478 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 500 mSolverCounterUnsat, 100 mSDtfsCounter, 2978 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 2817 GetRequests, 2030 SyntacticMatches, 64 SemanticMatches, 723 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11368 ImplicationChecksByTransitivity, 16.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=8967occurred in iteration=17, InterpolantAutomatonStates: 544, 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: 0.3s SsaConstructionTime, 1.1s SatisfiabilityAnalysisTime, 19.5s InterpolantComputationTime, 2703 NumberOfCodeBlocks, 2694 NumberOfCodeBlocksAsserted, 75 NumberOfCheckSat, 3597 ConstructedInterpolants, 0 QuantifiedInterpolants, 14135 SizeOfPredicates, 163 NumberOfNonLiveVariables, 2630 ConjunctsInSsa, 217 ConjunctsInUnsatCore, 41 InterpolantComputations, 9 PerfectInterpolantSequences, 1784/7028 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! [2022-11-20 11:48:06,079 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27cf5266-8cde-4ea0-9b5b-fb69db61a10b/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE