./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/weaver/chl-node-symm.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version b5237d83 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_5fc1a3cf-a740-4d08-8e24-7f0f8df0dd72/bin/uautomizer-vX5HgA9Q3a/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fc1a3cf-a740-4d08-8e24-7f0f8df0dd72/bin/uautomizer-vX5HgA9Q3a/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fc1a3cf-a740-4d08-8e24-7f0f8df0dd72/bin/uautomizer-vX5HgA9Q3a/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fc1a3cf-a740-4d08-8e24-7f0f8df0dd72/bin/uautomizer-vX5HgA9Q3a/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/chl-node-symm.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fc1a3cf-a740-4d08-8e24-7f0f8df0dd72/bin/uautomizer-vX5HgA9Q3a/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fc1a3cf-a740-4d08-8e24-7f0f8df0dd72/bin/uautomizer-vX5HgA9Q3a --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 514e162b13bdcbe99106b4f79e5a61b8afdae9b478788e06b35106cd952df62f --- 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-b5237d8 [2022-11-21 16:55:57,617 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-21 16:55:57,619 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-21 16:55:57,649 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-21 16:55:57,659 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-21 16:55:57,664 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-21 16:55:57,665 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-21 16:55:57,668 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-21 16:55:57,672 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-21 16:55:57,673 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-21 16:55:57,675 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-21 16:55:57,678 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-21 16:55:57,679 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-21 16:55:57,687 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-21 16:55:57,692 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-21 16:55:57,694 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-21 16:55:57,695 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-21 16:55:57,696 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-21 16:55:57,698 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-21 16:55:57,699 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-21 16:55:57,701 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-21 16:55:57,704 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-21 16:55:57,705 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-21 16:55:57,706 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-21 16:55:57,710 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-21 16:55:57,710 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-21 16:55:57,710 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-21 16:55:57,711 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-21 16:55:57,712 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-21 16:55:57,713 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-21 16:55:57,713 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-21 16:55:57,714 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-21 16:55:57,715 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-21 16:55:57,716 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-21 16:55:57,717 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-21 16:55:57,717 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-21 16:55:57,718 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-21 16:55:57,718 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-21 16:55:57,718 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-21 16:55:57,728 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-21 16:55:57,729 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-21 16:55:57,730 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fc1a3cf-a740-4d08-8e24-7f0f8df0dd72/bin/uautomizer-vX5HgA9Q3a/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-11-21 16:55:57,777 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-21 16:55:57,778 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-21 16:55:57,778 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-21 16:55:57,779 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-21 16:55:57,779 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-21 16:55:57,780 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-21 16:55:57,780 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-21 16:55:57,780 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-21 16:55:57,781 INFO L138 SettingsManager]: * Use SBE=true [2022-11-21 16:55:57,781 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-21 16:55:57,782 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-21 16:55:57,782 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-21 16:55:57,782 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-21 16:55:57,783 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-21 16:55:57,783 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-21 16:55:57,783 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-21 16:55:57,783 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-21 16:55:57,783 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-21 16:55:57,784 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-21 16:55:57,784 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-21 16:55:57,784 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-21 16:55:57,784 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-21 16:55:57,785 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-21 16:55:57,785 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-21 16:55:57,785 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-21 16:55:57,785 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-21 16:55:57,785 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-21 16:55:57,786 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-21 16:55:57,786 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-21 16:55:57,786 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-21 16:55:57,786 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-21 16:55:57,786 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-21 16:55:57,787 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-21 16:55:57,787 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_5fc1a3cf-a740-4d08-8e24-7f0f8df0dd72/bin/uautomizer-vX5HgA9Q3a/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fc1a3cf-a740-4d08-8e24-7f0f8df0dd72/bin/uautomizer-vX5HgA9Q3a Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 514e162b13bdcbe99106b4f79e5a61b8afdae9b478788e06b35106cd952df62f [2022-11-21 16:55:58,107 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-21 16:55:58,143 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-21 16:55:58,146 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-21 16:55:58,147 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-21 16:55:58,148 INFO L275 PluginConnector]: CDTParser initialized [2022-11-21 16:55:58,149 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fc1a3cf-a740-4d08-8e24-7f0f8df0dd72/bin/uautomizer-vX5HgA9Q3a/../../sv-benchmarks/c/weaver/chl-node-symm.wvr.c [2022-11-21 16:56:01,379 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-21 16:56:01,580 INFO L351 CDTParser]: Found 1 translation units. [2022-11-21 16:56:01,581 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fc1a3cf-a740-4d08-8e24-7f0f8df0dd72/sv-benchmarks/c/weaver/chl-node-symm.wvr.c [2022-11-21 16:56:01,588 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fc1a3cf-a740-4d08-8e24-7f0f8df0dd72/bin/uautomizer-vX5HgA9Q3a/data/65e6f25a3/0f7fa83d97b3409faf248ae286159faf/FLAG7b76903d3 [2022-11-21 16:56:01,604 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fc1a3cf-a740-4d08-8e24-7f0f8df0dd72/bin/uautomizer-vX5HgA9Q3a/data/65e6f25a3/0f7fa83d97b3409faf248ae286159faf [2022-11-21 16:56:01,607 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-21 16:56:01,609 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-21 16:56:01,610 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-21 16:56:01,610 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-21 16:56:01,614 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-21 16:56:01,615 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 04:56:01" (1/1) ... [2022-11-21 16:56:01,616 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3399c53f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:56:01, skipping insertion in model container [2022-11-21 16:56:01,616 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 04:56:01" (1/1) ... [2022-11-21 16:56:01,624 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-21 16:56:01,646 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-21 16:56:01,891 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_5fc1a3cf-a740-4d08-8e24-7f0f8df0dd72/sv-benchmarks/c/weaver/chl-node-symm.wvr.c[3305,3318] [2022-11-21 16:56:01,920 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-21 16:56:01,932 INFO L203 MainTranslator]: Completed pre-run [2022-11-21 16:56:01,956 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_5fc1a3cf-a740-4d08-8e24-7f0f8df0dd72/sv-benchmarks/c/weaver/chl-node-symm.wvr.c[3305,3318] [2022-11-21 16:56:01,963 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-21 16:56:01,978 INFO L208 MainTranslator]: Completed translation [2022-11-21 16:56:01,978 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:56:01 WrapperNode [2022-11-21 16:56:01,979 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-21 16:56:01,980 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-21 16:56:01,980 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-21 16:56:01,980 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-21 16:56:01,987 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:56:01" (1/1) ... [2022-11-21 16:56:01,998 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:56:01" (1/1) ... [2022-11-21 16:56:02,031 INFO L138 Inliner]: procedures = 26, calls = 50, calls flagged for inlining = 18, calls inlined = 24, statements flattened = 282 [2022-11-21 16:56:02,031 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-21 16:56:02,032 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-21 16:56:02,032 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-21 16:56:02,032 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-21 16:56:02,043 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:56:01" (1/1) ... [2022-11-21 16:56:02,043 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:56:01" (1/1) ... [2022-11-21 16:56:02,047 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:56:01" (1/1) ... [2022-11-21 16:56:02,048 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:56:01" (1/1) ... [2022-11-21 16:56:02,061 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:56:01" (1/1) ... [2022-11-21 16:56:02,096 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:56:01" (1/1) ... [2022-11-21 16:56:02,098 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:56:01" (1/1) ... [2022-11-21 16:56:02,099 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:56:01" (1/1) ... [2022-11-21 16:56:02,103 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-21 16:56:02,104 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-21 16:56:02,104 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-21 16:56:02,105 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-21 16:56:02,115 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:56:01" (1/1) ... [2022-11-21 16:56:02,122 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-21 16:56:02,138 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fc1a3cf-a740-4d08-8e24-7f0f8df0dd72/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 16:56:02,151 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fc1a3cf-a740-4d08-8e24-7f0f8df0dd72/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-21 16:56:02,176 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fc1a3cf-a740-4d08-8e24-7f0f8df0dd72/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-21 16:56:02,201 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-21 16:56:02,201 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-21 16:56:02,202 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-21 16:56:02,202 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-21 16:56:02,202 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-11-21 16:56:02,202 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-11-21 16:56:02,202 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-11-21 16:56:02,203 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-11-21 16:56:02,203 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-21 16:56:02,204 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-21 16:56:02,204 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-21 16:56:02,204 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-21 16:56:02,204 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-21 16:56:02,206 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-21 16:56:02,312 INFO L235 CfgBuilder]: Building ICFG [2022-11-21 16:56:02,314 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-21 16:56:02,919 INFO L276 CfgBuilder]: Performing block encoding [2022-11-21 16:56:02,932 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-21 16:56:02,933 INFO L300 CfgBuilder]: Removed 4 assume(true) statements. [2022-11-21 16:56:02,935 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 04:56:02 BoogieIcfgContainer [2022-11-21 16:56:02,936 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-21 16:56:02,938 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-21 16:56:02,939 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-21 16:56:02,942 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-21 16:56:02,942 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.11 04:56:01" (1/3) ... [2022-11-21 16:56:02,943 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@14dbaa07 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 04:56:02, skipping insertion in model container [2022-11-21 16:56:02,943 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:56:01" (2/3) ... [2022-11-21 16:56:02,944 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@14dbaa07 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 04:56:02, skipping insertion in model container [2022-11-21 16:56:02,944 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 04:56:02" (3/3) ... [2022-11-21 16:56:02,945 INFO L112 eAbstractionObserver]: Analyzing ICFG chl-node-symm.wvr.c [2022-11-21 16:56:02,955 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-21 16:56:02,978 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-21 16:56:02,979 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-21 16:56:02,979 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-21 16:56:03,085 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-11-21 16:56:03,142 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 353 places, 374 transitions, 764 flow [2022-11-21 16:56:03,321 INFO L130 PetriNetUnfolder]: 28/372 cut-off events. [2022-11-21 16:56:03,321 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-11-21 16:56:03,332 INFO L83 FinitePrefix]: Finished finitePrefix Result has 381 conditions, 372 events. 28/372 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 359 event pairs, 0 based on Foata normal form. 0/343 useless extension candidates. Maximal degree in co-relation 293. Up to 2 conditions per place. [2022-11-21 16:56:03,332 INFO L82 GeneralOperation]: Start removeDead. Operand has 353 places, 374 transitions, 764 flow [2022-11-21 16:56:03,340 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 342 places, 363 transitions, 738 flow [2022-11-21 16:56:03,351 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-21 16:56:03,362 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;@678fe42c, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-21 16:56:03,362 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2022-11-21 16:56:03,477 INFO L130 PetriNetUnfolder]: 28/362 cut-off events. [2022-11-21 16:56:03,477 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-11-21 16:56:03,478 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 16:56:03,479 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 16:56:03,480 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-21 16:56:03,486 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:56:03,487 INFO L85 PathProgramCache]: Analyzing trace with hash 376588704, now seen corresponding path program 1 times [2022-11-21 16:56:03,497 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:56:03,498 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1715024957] [2022-11-21 16:56:03,498 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:56:03,500 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:56:03,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:56:03,951 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:56:03,952 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:56:03,952 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1715024957] [2022-11-21 16:56:03,953 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1715024957] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:56:03,953 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:56:03,953 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-21 16:56:03,955 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [972282814] [2022-11-21 16:56:03,956 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:56:03,965 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-21 16:56:03,965 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:56:03,993 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-21 16:56:03,995 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-21 16:56:03,998 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 349 out of 374 [2022-11-21 16:56:04,002 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 342 places, 363 transitions, 738 flow. Second operand has 2 states, 2 states have (on average 353.0) internal successors, (706), 2 states have internal predecessors, (706), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:56:04,002 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 16:56:04,003 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 349 of 374 [2022-11-21 16:56:04,004 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 16:56:04,117 INFO L130 PetriNetUnfolder]: 8/343 cut-off events. [2022-11-21 16:56:04,118 INFO L131 PetriNetUnfolder]: For 8/9 co-relation queries the response was YES. [2022-11-21 16:56:04,123 INFO L83 FinitePrefix]: Finished finitePrefix Result has 357 conditions, 343 events. 8/343 cut-off events. For 8/9 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 337 event pairs, 0 based on Foata normal form. 21/340 useless extension candidates. Maximal degree in co-relation 277. Up to 5 conditions per place. [2022-11-21 16:56:04,125 INFO L137 encePairwiseOnDemand]: 354/374 looper letters, 4 selfloop transitions, 0 changer transitions 12/343 dead transitions. [2022-11-21 16:56:04,126 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 343 places, 343 transitions, 706 flow [2022-11-21 16:56:04,127 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-21 16:56:04,130 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2022-11-21 16:56:04,143 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 722 transitions. [2022-11-21 16:56:04,149 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9652406417112299 [2022-11-21 16:56:04,150 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 722 transitions. [2022-11-21 16:56:04,150 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 722 transitions. [2022-11-21 16:56:04,155 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 16:56:04,158 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 722 transitions. [2022-11-21 16:56:04,164 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 361.0) internal successors, (722), 2 states have internal predecessors, (722), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:56:04,175 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 374.0) internal successors, (1122), 3 states have internal predecessors, (1122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:56:04,177 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 374.0) internal successors, (1122), 3 states have internal predecessors, (1122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:56:04,179 INFO L175 Difference]: Start difference. First operand has 342 places, 363 transitions, 738 flow. Second operand 2 states and 722 transitions. [2022-11-21 16:56:04,180 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 343 places, 343 transitions, 706 flow [2022-11-21 16:56:04,187 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 339 places, 343 transitions, 698 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-11-21 16:56:04,195 INFO L231 Difference]: Finished difference. Result has 339 places, 331 transitions, 666 flow [2022-11-21 16:56:04,198 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=374, PETRI_DIFFERENCE_MINUEND_FLOW=690, PETRI_DIFFERENCE_MINUEND_PLACES=338, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=343, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=343, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=666, PETRI_PLACES=339, PETRI_TRANSITIONS=331} [2022-11-21 16:56:04,205 INFO L288 CegarLoopForPetriNet]: 342 programPoint places, -3 predicate places. [2022-11-21 16:56:04,205 INFO L495 AbstractCegarLoop]: Abstraction has has 339 places, 331 transitions, 666 flow [2022-11-21 16:56:04,206 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 353.0) internal successors, (706), 2 states have internal predecessors, (706), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:56:04,206 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 16:56:04,207 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 16:56:04,207 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-21 16:56:04,208 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-21 16:56:04,209 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:56:04,209 INFO L85 PathProgramCache]: Analyzing trace with hash -761859074, now seen corresponding path program 1 times [2022-11-21 16:56:04,209 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:56:04,210 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [454626967] [2022-11-21 16:56:04,210 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:56:04,211 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:56:04,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:56:04,556 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:56:04,557 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:56:04,557 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [454626967] [2022-11-21 16:56:04,557 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [454626967] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:56:04,557 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:56:04,558 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-21 16:56:04,558 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1911926639] [2022-11-21 16:56:04,560 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:56:04,565 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-21 16:56:04,566 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:56:04,566 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-21 16:56:04,566 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-21 16:56:04,569 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 342 out of 374 [2022-11-21 16:56:04,571 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 339 places, 331 transitions, 666 flow. Second operand has 3 states, 3 states have (on average 344.6666666666667) internal successors, (1034), 3 states have internal predecessors, (1034), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:56:04,572 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 16:56:04,573 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 342 of 374 [2022-11-21 16:56:04,573 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 16:56:04,719 INFO L130 PetriNetUnfolder]: 19/448 cut-off events. [2022-11-21 16:56:04,720 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-11-21 16:56:04,722 INFO L83 FinitePrefix]: Finished finitePrefix Result has 489 conditions, 448 events. 19/448 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 1039 event pairs, 5 based on Foata normal form. 0/427 useless extension candidates. Maximal degree in co-relation 486. Up to 22 conditions per place. [2022-11-21 16:56:04,723 INFO L137 encePairwiseOnDemand]: 370/374 looper letters, 11 selfloop transitions, 3 changer transitions 0/334 dead transitions. [2022-11-21 16:56:04,724 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 329 places, 334 transitions, 701 flow [2022-11-21 16:56:04,724 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-21 16:56:04,724 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-21 16:56:04,726 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1041 transitions. [2022-11-21 16:56:04,726 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9278074866310161 [2022-11-21 16:56:04,727 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1041 transitions. [2022-11-21 16:56:04,727 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1041 transitions. [2022-11-21 16:56:04,727 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 16:56:04,728 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1041 transitions. [2022-11-21 16:56:04,730 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 347.0) internal successors, (1041), 3 states have internal predecessors, (1041), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:56:04,733 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 374.0) internal successors, (1496), 4 states have internal predecessors, (1496), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:56:04,734 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 374.0) internal successors, (1496), 4 states have internal predecessors, (1496), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:56:04,734 INFO L175 Difference]: Start difference. First operand has 339 places, 331 transitions, 666 flow. Second operand 3 states and 1041 transitions. [2022-11-21 16:56:04,734 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 329 places, 334 transitions, 701 flow [2022-11-21 16:56:04,738 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 329 places, 334 transitions, 701 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-21 16:56:04,745 INFO L231 Difference]: Finished difference. Result has 331 places, 333 transitions, 688 flow [2022-11-21 16:56:04,746 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=374, PETRI_DIFFERENCE_MINUEND_FLOW=666, PETRI_DIFFERENCE_MINUEND_PLACES=327, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=331, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=328, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=688, PETRI_PLACES=331, PETRI_TRANSITIONS=333} [2022-11-21 16:56:04,746 INFO L288 CegarLoopForPetriNet]: 342 programPoint places, -11 predicate places. [2022-11-21 16:56:04,747 INFO L495 AbstractCegarLoop]: Abstraction has has 331 places, 333 transitions, 688 flow [2022-11-21 16:56:04,748 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 344.6666666666667) internal successors, (1034), 3 states have internal predecessors, (1034), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:56:04,748 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 16:56:04,748 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 16:56:04,748 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-21 16:56:04,749 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-21 16:56:04,758 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:56:04,758 INFO L85 PathProgramCache]: Analyzing trace with hash 1946151650, now seen corresponding path program 1 times [2022-11-21 16:56:04,759 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:56:04,760 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [683980121] [2022-11-21 16:56:04,760 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:56:04,761 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:56:04,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:56:04,984 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:56:04,984 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:56:04,985 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [683980121] [2022-11-21 16:56:04,985 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [683980121] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:56:04,986 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:56:04,986 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-21 16:56:04,986 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [479075497] [2022-11-21 16:56:04,987 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:56:04,987 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-21 16:56:04,987 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:56:04,988 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-21 16:56:04,989 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-21 16:56:04,990 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 342 out of 374 [2022-11-21 16:56:04,992 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 331 places, 333 transitions, 688 flow. Second operand has 3 states, 3 states have (on average 344.6666666666667) internal successors, (1034), 3 states have internal predecessors, (1034), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:56:04,992 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 16:56:04,993 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 342 of 374 [2022-11-21 16:56:04,993 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 16:56:05,106 INFO L130 PetriNetUnfolder]: 17/398 cut-off events. [2022-11-21 16:56:05,107 INFO L131 PetriNetUnfolder]: For 12/13 co-relation queries the response was YES. [2022-11-21 16:56:05,109 INFO L83 FinitePrefix]: Finished finitePrefix Result has 443 conditions, 398 events. 17/398 cut-off events. For 12/13 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 651 event pairs, 5 based on Foata normal form. 0/378 useless extension candidates. Maximal degree in co-relation 438. Up to 22 conditions per place. [2022-11-21 16:56:05,110 INFO L137 encePairwiseOnDemand]: 370/374 looper letters, 11 selfloop transitions, 3 changer transitions 0/336 dead transitions. [2022-11-21 16:56:05,110 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 333 places, 336 transitions, 723 flow [2022-11-21 16:56:05,111 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-21 16:56:05,111 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-21 16:56:05,113 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1041 transitions. [2022-11-21 16:56:05,114 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9278074866310161 [2022-11-21 16:56:05,114 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1041 transitions. [2022-11-21 16:56:05,115 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1041 transitions. [2022-11-21 16:56:05,115 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 16:56:05,117 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1041 transitions. [2022-11-21 16:56:05,119 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 347.0) internal successors, (1041), 3 states have internal predecessors, (1041), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:56:05,122 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 374.0) internal successors, (1496), 4 states have internal predecessors, (1496), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:56:05,123 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 374.0) internal successors, (1496), 4 states have internal predecessors, (1496), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:56:05,123 INFO L175 Difference]: Start difference. First operand has 331 places, 333 transitions, 688 flow. Second operand 3 states and 1041 transitions. [2022-11-21 16:56:05,123 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 333 places, 336 transitions, 723 flow [2022-11-21 16:56:05,126 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 331 places, 336 transitions, 717 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-21 16:56:05,130 INFO L231 Difference]: Finished difference. Result has 333 places, 335 transitions, 704 flow [2022-11-21 16:56:05,131 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=374, PETRI_DIFFERENCE_MINUEND_FLOW=682, PETRI_DIFFERENCE_MINUEND_PLACES=329, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=333, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=330, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=704, PETRI_PLACES=333, PETRI_TRANSITIONS=335} [2022-11-21 16:56:05,132 INFO L288 CegarLoopForPetriNet]: 342 programPoint places, -9 predicate places. [2022-11-21 16:56:05,133 INFO L495 AbstractCegarLoop]: Abstraction has has 333 places, 335 transitions, 704 flow [2022-11-21 16:56:05,134 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 344.6666666666667) internal successors, (1034), 3 states have internal predecessors, (1034), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:56:05,134 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 16:56:05,134 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 16:56:05,134 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-21 16:56:05,135 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-21 16:56:05,136 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:56:05,136 INFO L85 PathProgramCache]: Analyzing trace with hash -1265240246, now seen corresponding path program 1 times [2022-11-21 16:56:05,136 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:56:05,137 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2047467959] [2022-11-21 16:56:05,137 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:56:05,137 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:56:05,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:56:05,852 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:56:05,852 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:56:05,852 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2047467959] [2022-11-21 16:56:05,853 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2047467959] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:56:05,853 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:56:05,853 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-21 16:56:05,854 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [103823757] [2022-11-21 16:56:05,854 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:56:05,858 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-21 16:56:05,859 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:56:05,865 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-21 16:56:05,866 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=31, Unknown=0, NotChecked=0, Total=56 [2022-11-21 16:56:05,871 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 260 out of 374 [2022-11-21 16:56:05,874 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 333 places, 335 transitions, 704 flow. Second operand has 8 states, 8 states have (on average 268.875) internal successors, (2151), 8 states have internal predecessors, (2151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:56:05,874 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 16:56:05,874 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 260 of 374 [2022-11-21 16:56:05,874 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 16:56:06,210 INFO L130 PetriNetUnfolder]: 33/644 cut-off events. [2022-11-21 16:56:06,210 INFO L131 PetriNetUnfolder]: For 20/20 co-relation queries the response was YES. [2022-11-21 16:56:06,213 INFO L83 FinitePrefix]: Finished finitePrefix Result has 827 conditions, 644 events. 33/644 cut-off events. For 20/20 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 2174 event pairs, 15 based on Foata normal form. 0/618 useless extension candidates. Maximal degree in co-relation 821. Up to 77 conditions per place. [2022-11-21 16:56:06,217 INFO L137 encePairwiseOnDemand]: 364/374 looper letters, 76 selfloop transitions, 9 changer transitions 0/339 dead transitions. [2022-11-21 16:56:06,217 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 340 places, 339 transitions, 882 flow [2022-11-21 16:56:06,218 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-21 16:56:06,218 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-11-21 16:56:06,221 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 2166 transitions. [2022-11-21 16:56:06,222 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7239304812834224 [2022-11-21 16:56:06,223 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 2166 transitions. [2022-11-21 16:56:06,223 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 2166 transitions. [2022-11-21 16:56:06,225 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 16:56:06,225 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 2166 transitions. [2022-11-21 16:56:06,231 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 270.75) internal successors, (2166), 8 states have internal predecessors, (2166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:56:06,240 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 374.0) internal successors, (3366), 9 states have internal predecessors, (3366), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:56:06,242 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 374.0) internal successors, (3366), 9 states have internal predecessors, (3366), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:56:06,242 INFO L175 Difference]: Start difference. First operand has 333 places, 335 transitions, 704 flow. Second operand 8 states and 2166 transitions. [2022-11-21 16:56:06,242 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 340 places, 339 transitions, 882 flow [2022-11-21 16:56:06,247 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 338 places, 339 transitions, 876 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-21 16:56:06,252 INFO L231 Difference]: Finished difference. Result has 339 places, 336 transitions, 724 flow [2022-11-21 16:56:06,253 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=374, PETRI_DIFFERENCE_MINUEND_FLOW=698, PETRI_DIFFERENCE_MINUEND_PLACES=331, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=335, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=326, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=724, PETRI_PLACES=339, PETRI_TRANSITIONS=336} [2022-11-21 16:56:06,254 INFO L288 CegarLoopForPetriNet]: 342 programPoint places, -3 predicate places. [2022-11-21 16:56:06,255 INFO L495 AbstractCegarLoop]: Abstraction has has 339 places, 336 transitions, 724 flow [2022-11-21 16:56:06,258 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 268.875) internal successors, (2151), 8 states have internal predecessors, (2151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:56:06,258 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 16:56:06,258 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 16:56:06,258 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-21 16:56:06,259 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-21 16:56:06,259 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:56:06,259 INFO L85 PathProgramCache]: Analyzing trace with hash -1927680248, now seen corresponding path program 1 times [2022-11-21 16:56:06,260 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:56:06,260 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [222646883] [2022-11-21 16:56:06,261 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:56:06,261 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:56:06,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:56:06,778 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:56:06,778 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:56:06,779 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [222646883] [2022-11-21 16:56:06,779 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [222646883] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-21 16:56:06,779 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1624646410] [2022-11-21 16:56:06,779 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:56:06,779 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 16:56:06,780 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fc1a3cf-a740-4d08-8e24-7f0f8df0dd72/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 16:56:06,787 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fc1a3cf-a740-4d08-8e24-7f0f8df0dd72/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-21 16:56:06,815 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fc1a3cf-a740-4d08-8e24-7f0f8df0dd72/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-21 16:56:06,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:56:06,983 INFO L263 TraceCheckSpWp]: Trace formula consists of 510 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-21 16:56:06,993 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 16:56:07,227 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:56:07,227 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-21 16:56:07,564 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:56:07,564 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1624646410] provided 1 perfect and 1 imperfect interpolant sequences [2022-11-21 16:56:07,564 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-11-21 16:56:07,565 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [10, 9] total 16 [2022-11-21 16:56:07,565 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1503568971] [2022-11-21 16:56:07,565 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:56:07,566 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-21 16:56:07,566 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:56:07,567 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-21 16:56:07,568 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=190, Unknown=0, NotChecked=0, Total=240 [2022-11-21 16:56:07,572 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 293 out of 374 [2022-11-21 16:56:07,576 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 339 places, 336 transitions, 724 flow. Second operand has 9 states, 9 states have (on average 298.1111111111111) internal successors, (2683), 9 states have internal predecessors, (2683), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:56:07,576 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 16:56:07,576 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 293 of 374 [2022-11-21 16:56:07,576 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 16:56:07,972 INFO L130 PetriNetUnfolder]: 33/645 cut-off events. [2022-11-21 16:56:07,972 INFO L131 PetriNetUnfolder]: For 13/13 co-relation queries the response was YES. [2022-11-21 16:56:07,975 INFO L83 FinitePrefix]: Finished finitePrefix Result has 806 conditions, 645 events. 33/645 cut-off events. For 13/13 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 2175 event pairs, 15 based on Foata normal form. 0/615 useless extension candidates. Maximal degree in co-relation 799. Up to 45 conditions per place. [2022-11-21 16:56:07,977 INFO L137 encePairwiseOnDemand]: 358/374 looper letters, 48 selfloop transitions, 15 changer transitions 0/338 dead transitions. [2022-11-21 16:56:07,978 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 350 places, 338 transitions, 854 flow [2022-11-21 16:56:07,978 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-21 16:56:07,978 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2022-11-21 16:56:07,983 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 3579 transitions. [2022-11-21 16:56:07,985 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7974598930481284 [2022-11-21 16:56:07,985 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 3579 transitions. [2022-11-21 16:56:07,986 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 3579 transitions. [2022-11-21 16:56:07,988 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 16:56:07,988 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 3579 transitions. [2022-11-21 16:56:07,996 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 298.25) internal successors, (3579), 12 states have internal predecessors, (3579), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:56:08,004 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 374.0) internal successors, (4862), 13 states have internal predecessors, (4862), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:56:08,006 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 374.0) internal successors, (4862), 13 states have internal predecessors, (4862), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:56:08,006 INFO L175 Difference]: Start difference. First operand has 339 places, 336 transitions, 724 flow. Second operand 12 states and 3579 transitions. [2022-11-21 16:56:08,006 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 350 places, 338 transitions, 854 flow [2022-11-21 16:56:08,010 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 344 places, 338 transitions, 838 flow, removed 0 selfloop flow, removed 6 redundant places. [2022-11-21 16:56:08,014 INFO L231 Difference]: Finished difference. Result has 347 places, 338 transitions, 757 flow [2022-11-21 16:56:08,015 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=374, PETRI_DIFFERENCE_MINUEND_FLOW=708, PETRI_DIFFERENCE_MINUEND_PLACES=333, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=336, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=321, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=757, PETRI_PLACES=347, PETRI_TRANSITIONS=338} [2022-11-21 16:56:08,016 INFO L288 CegarLoopForPetriNet]: 342 programPoint places, 5 predicate places. [2022-11-21 16:56:08,016 INFO L495 AbstractCegarLoop]: Abstraction has has 347 places, 338 transitions, 757 flow [2022-11-21 16:56:08,017 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 298.1111111111111) internal successors, (2683), 9 states have internal predecessors, (2683), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:56:08,017 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 16:56:08,018 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 16:56:08,036 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fc1a3cf-a740-4d08-8e24-7f0f8df0dd72/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-21 16:56:08,227 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fc1a3cf-a740-4d08-8e24-7f0f8df0dd72/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 16:56:08,228 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-21 16:56:08,228 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:56:08,229 INFO L85 PathProgramCache]: Analyzing trace with hash -352128074, now seen corresponding path program 1 times [2022-11-21 16:56:08,229 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:56:08,229 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1054752559] [2022-11-21 16:56:08,229 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:56:08,229 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:56:08,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:56:08,726 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-21 16:56:08,726 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:56:08,727 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1054752559] [2022-11-21 16:56:08,727 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1054752559] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:56:08,727 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:56:08,727 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-21 16:56:08,728 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [661163979] [2022-11-21 16:56:08,728 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:56:08,728 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-21 16:56:08,728 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:56:08,729 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-21 16:56:08,729 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-11-21 16:56:08,732 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 260 out of 374 [2022-11-21 16:56:08,734 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 347 places, 338 transitions, 757 flow. Second operand has 8 states, 8 states have (on average 269.375) internal successors, (2155), 8 states have internal predecessors, (2155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:56:08,735 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 16:56:08,735 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 260 of 374 [2022-11-21 16:56:08,735 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 16:56:08,996 INFO L130 PetriNetUnfolder]: 31/606 cut-off events. [2022-11-21 16:56:08,996 INFO L131 PetriNetUnfolder]: For 20/20 co-relation queries the response was YES. [2022-11-21 16:56:08,998 INFO L83 FinitePrefix]: Finished finitePrefix Result has 802 conditions, 606 events. 31/606 cut-off events. For 20/20 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 1984 event pairs, 15 based on Foata normal form. 1/584 useless extension candidates. Maximal degree in co-relation 792. Up to 92 conditions per place. [2022-11-21 16:56:09,000 INFO L137 encePairwiseOnDemand]: 362/374 looper letters, 76 selfloop transitions, 11 changer transitions 0/342 dead transitions. [2022-11-21 16:56:09,001 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 355 places, 342 transitions, 939 flow [2022-11-21 16:56:09,001 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-21 16:56:09,001 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-11-21 16:56:09,005 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 2426 transitions. [2022-11-21 16:56:09,007 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.720736779560309 [2022-11-21 16:56:09,007 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 2426 transitions. [2022-11-21 16:56:09,007 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 2426 transitions. [2022-11-21 16:56:09,009 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 16:56:09,009 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 2426 transitions. [2022-11-21 16:56:09,014 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 269.55555555555554) internal successors, (2426), 9 states have internal predecessors, (2426), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:56:09,019 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 374.0) internal successors, (3740), 10 states have internal predecessors, (3740), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:56:09,021 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 374.0) internal successors, (3740), 10 states have internal predecessors, (3740), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:56:09,021 INFO L175 Difference]: Start difference. First operand has 347 places, 338 transitions, 757 flow. Second operand 9 states and 2426 transitions. [2022-11-21 16:56:09,021 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 355 places, 342 transitions, 939 flow [2022-11-21 16:56:09,025 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 346 places, 342 transitions, 915 flow, removed 0 selfloop flow, removed 9 redundant places. [2022-11-21 16:56:09,029 INFO L231 Difference]: Finished difference. Result has 347 places, 339 transitions, 763 flow [2022-11-21 16:56:09,030 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=374, PETRI_DIFFERENCE_MINUEND_FLOW=733, PETRI_DIFFERENCE_MINUEND_PLACES=338, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=338, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=327, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=763, PETRI_PLACES=347, PETRI_TRANSITIONS=339} [2022-11-21 16:56:09,031 INFO L288 CegarLoopForPetriNet]: 342 programPoint places, 5 predicate places. [2022-11-21 16:56:09,031 INFO L495 AbstractCegarLoop]: Abstraction has has 347 places, 339 transitions, 763 flow [2022-11-21 16:56:09,032 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 269.375) internal successors, (2155), 8 states have internal predecessors, (2155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:56:09,032 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 16:56:09,033 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 16:56:09,033 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-21 16:56:09,033 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-21 16:56:09,034 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:56:09,034 INFO L85 PathProgramCache]: Analyzing trace with hash -836834027, now seen corresponding path program 1 times [2022-11-21 16:56:09,034 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:56:09,034 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1356329607] [2022-11-21 16:56:09,034 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:56:09,035 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:56:09,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:56:09,402 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-21 16:56:09,402 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:56:09,403 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1356329607] [2022-11-21 16:56:09,403 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1356329607] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-21 16:56:09,403 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [577336383] [2022-11-21 16:56:09,403 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:56:09,403 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 16:56:09,404 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fc1a3cf-a740-4d08-8e24-7f0f8df0dd72/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 16:56:09,407 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fc1a3cf-a740-4d08-8e24-7f0f8df0dd72/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-21 16:56:09,431 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fc1a3cf-a740-4d08-8e24-7f0f8df0dd72/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-21 16:56:09,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:56:09,592 INFO L263 TraceCheckSpWp]: Trace formula consists of 534 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-21 16:56:09,598 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 16:56:09,769 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-21 16:56:09,770 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-21 16:56:10,040 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-21 16:56:10,040 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [577336383] provided 1 perfect and 1 imperfect interpolant sequences [2022-11-21 16:56:10,040 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-11-21 16:56:10,040 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [10, 9] total 16 [2022-11-21 16:56:10,041 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2132638684] [2022-11-21 16:56:10,041 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:56:10,042 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-21 16:56:10,042 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:56:10,042 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-21 16:56:10,042 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=190, Unknown=0, NotChecked=0, Total=240 [2022-11-21 16:56:10,046 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 293 out of 374 [2022-11-21 16:56:10,048 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 347 places, 339 transitions, 763 flow. Second operand has 9 states, 9 states have (on average 299.0) internal successors, (2691), 9 states have internal predecessors, (2691), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:56:10,049 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 16:56:10,049 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 293 of 374 [2022-11-21 16:56:10,049 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 16:56:10,337 INFO L130 PetriNetUnfolder]: 31/607 cut-off events. [2022-11-21 16:56:10,338 INFO L131 PetriNetUnfolder]: For 27/27 co-relation queries the response was YES. [2022-11-21 16:56:10,339 INFO L83 FinitePrefix]: Finished finitePrefix Result has 787 conditions, 607 events. 31/607 cut-off events. For 27/27 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 1971 event pairs, 15 based on Foata normal form. 0/583 useless extension candidates. Maximal degree in co-relation 776. Up to 73 conditions per place. [2022-11-21 16:56:10,341 INFO L137 encePairwiseOnDemand]: 358/374 looper letters, 50 selfloop transitions, 16 changer transitions 0/341 dead transitions. [2022-11-21 16:56:10,341 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 357 places, 341 transitions, 899 flow [2022-11-21 16:56:10,342 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-21 16:56:10,342 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2022-11-21 16:56:10,348 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 3286 transitions. [2022-11-21 16:56:10,350 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7987360233349539 [2022-11-21 16:56:10,350 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 3286 transitions. [2022-11-21 16:56:10,350 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 3286 transitions. [2022-11-21 16:56:10,352 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 16:56:10,352 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 3286 transitions. [2022-11-21 16:56:10,375 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 298.72727272727275) internal successors, (3286), 11 states have internal predecessors, (3286), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:56:10,382 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 374.0) internal successors, (4488), 12 states have internal predecessors, (4488), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:56:10,385 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 374.0) internal successors, (4488), 12 states have internal predecessors, (4488), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:56:10,386 INFO L175 Difference]: Start difference. First operand has 347 places, 339 transitions, 763 flow. Second operand 11 states and 3286 transitions. [2022-11-21 16:56:10,386 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 357 places, 341 transitions, 899 flow [2022-11-21 16:56:10,391 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 350 places, 341 transitions, 879 flow, removed 0 selfloop flow, removed 7 redundant places. [2022-11-21 16:56:10,397 INFO L231 Difference]: Finished difference. Result has 353 places, 341 transitions, 795 flow [2022-11-21 16:56:10,397 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=374, PETRI_DIFFERENCE_MINUEND_FLOW=743, PETRI_DIFFERENCE_MINUEND_PLACES=340, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=339, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=323, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=795, PETRI_PLACES=353, PETRI_TRANSITIONS=341} [2022-11-21 16:56:10,398 INFO L288 CegarLoopForPetriNet]: 342 programPoint places, 11 predicate places. [2022-11-21 16:56:10,398 INFO L495 AbstractCegarLoop]: Abstraction has has 353 places, 341 transitions, 795 flow [2022-11-21 16:56:10,399 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 299.0) internal successors, (2691), 9 states have internal predecessors, (2691), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:56:10,399 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 16:56:10,399 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 16:56:10,406 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fc1a3cf-a740-4d08-8e24-7f0f8df0dd72/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-21 16:56:10,605 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fc1a3cf-a740-4d08-8e24-7f0f8df0dd72/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2022-11-21 16:56:10,606 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-21 16:56:10,606 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:56:10,607 INFO L85 PathProgramCache]: Analyzing trace with hash 1997562046, now seen corresponding path program 1 times [2022-11-21 16:56:10,607 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:56:10,607 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [330180003] [2022-11-21 16:56:10,607 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:56:10,607 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:56:10,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:56:13,028 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-21 16:56:13,028 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:56:13,029 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [330180003] [2022-11-21 16:56:13,029 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [330180003] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:56:13,029 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:56:13,029 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2022-11-21 16:56:13,029 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [169603255] [2022-11-21 16:56:13,029 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:56:13,030 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-11-21 16:56:13,030 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:56:13,030 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-11-21 16:56:13,031 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=207, Unknown=0, NotChecked=0, Total=240 [2022-11-21 16:56:13,036 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 227 out of 374 [2022-11-21 16:56:13,040 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 353 places, 341 transitions, 795 flow. Second operand has 16 states, 16 states have (on average 233.75) internal successors, (3740), 16 states have internal predecessors, (3740), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:56:13,040 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 16:56:13,040 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 227 of 374 [2022-11-21 16:56:13,040 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 16:56:16,784 INFO L130 PetriNetUnfolder]: 1437/5597 cut-off events. [2022-11-21 16:56:16,785 INFO L131 PetriNetUnfolder]: For 61/67 co-relation queries the response was YES. [2022-11-21 16:56:16,801 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8481 conditions, 5597 events. 1437/5597 cut-off events. For 61/67 co-relation queries the response was YES. Maximal size of possible extension queue 150. Compared 51086 event pairs, 45 based on Foata normal form. 5/5362 useless extension candidates. Maximal degree in co-relation 8467. Up to 805 conditions per place. [2022-11-21 16:56:16,824 INFO L137 encePairwiseOnDemand]: 353/374 looper letters, 328 selfloop transitions, 33 changer transitions 25/613 dead transitions. [2022-11-21 16:56:16,824 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 386 places, 613 transitions, 2127 flow [2022-11-21 16:56:16,825 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2022-11-21 16:56:16,825 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2022-11-21 16:56:16,842 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 8105 transitions. [2022-11-21 16:56:16,847 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6373859704309531 [2022-11-21 16:56:16,847 INFO L72 ComplementDD]: Start complementDD. Operand 34 states and 8105 transitions. [2022-11-21 16:56:16,847 INFO L73 IsDeterministic]: Start isDeterministic. Operand 34 states and 8105 transitions. [2022-11-21 16:56:16,853 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 16:56:16,853 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 34 states and 8105 transitions. [2022-11-21 16:56:16,874 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 35 states, 34 states have (on average 238.38235294117646) internal successors, (8105), 34 states have internal predecessors, (8105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:56:16,897 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 35 states, 35 states have (on average 374.0) internal successors, (13090), 35 states have internal predecessors, (13090), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:56:16,902 INFO L81 ComplementDD]: Finished complementDD. Result has 35 states, 35 states have (on average 374.0) internal successors, (13090), 35 states have internal predecessors, (13090), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:56:16,903 INFO L175 Difference]: Start difference. First operand has 353 places, 341 transitions, 795 flow. Second operand 34 states and 8105 transitions. [2022-11-21 16:56:16,903 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 386 places, 613 transitions, 2127 flow [2022-11-21 16:56:16,912 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 378 places, 613 transitions, 2102 flow, removed 0 selfloop flow, removed 8 redundant places. [2022-11-21 16:56:16,921 INFO L231 Difference]: Finished difference. Result has 405 places, 368 transitions, 1005 flow [2022-11-21 16:56:16,921 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=374, PETRI_DIFFERENCE_MINUEND_FLOW=770, PETRI_DIFFERENCE_MINUEND_PLACES=345, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=341, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=326, PETRI_DIFFERENCE_SUBTRAHEND_STATES=34, PETRI_FLOW=1005, PETRI_PLACES=405, PETRI_TRANSITIONS=368} [2022-11-21 16:56:16,924 INFO L288 CegarLoopForPetriNet]: 342 programPoint places, 63 predicate places. [2022-11-21 16:56:16,925 INFO L495 AbstractCegarLoop]: Abstraction has has 405 places, 368 transitions, 1005 flow [2022-11-21 16:56:16,926 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 233.75) internal successors, (3740), 16 states have internal predecessors, (3740), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:56:16,926 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 16:56:16,927 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 16:56:16,927 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-21 16:56:16,927 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-21 16:56:16,928 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:56:16,928 INFO L85 PathProgramCache]: Analyzing trace with hash 1794910986, now seen corresponding path program 2 times [2022-11-21 16:56:16,928 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:56:16,928 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [924393880] [2022-11-21 16:56:16,929 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:56:16,929 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:56:17,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:56:19,227 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-21 16:56:19,228 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:56:19,228 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [924393880] [2022-11-21 16:56:19,228 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [924393880] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:56:19,228 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:56:19,228 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2022-11-21 16:56:19,228 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1142988746] [2022-11-21 16:56:19,228 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:56:19,229 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-11-21 16:56:19,229 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:56:19,229 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-11-21 16:56:19,229 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=209, Unknown=0, NotChecked=0, Total=240 [2022-11-21 16:56:19,233 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 227 out of 374 [2022-11-21 16:56:19,235 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 405 places, 368 transitions, 1005 flow. Second operand has 16 states, 16 states have (on average 233.75) internal successors, (3740), 16 states have internal predecessors, (3740), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:56:19,235 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 16:56:19,235 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 227 of 374 [2022-11-21 16:56:19,235 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 16:56:25,711 INFO L130 PetriNetUnfolder]: 2402/9121 cut-off events. [2022-11-21 16:56:25,712 INFO L131 PetriNetUnfolder]: For 5814/5822 co-relation queries the response was YES. [2022-11-21 16:56:25,771 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17818 conditions, 9121 events. 2402/9121 cut-off events. For 5814/5822 co-relation queries the response was YES. Maximal size of possible extension queue 244. Compared 94361 event pairs, 419 based on Foata normal form. 1/8718 useless extension candidates. Maximal degree in co-relation 17777. Up to 1377 conditions per place. [2022-11-21 16:56:25,808 INFO L137 encePairwiseOnDemand]: 352/374 looper letters, 328 selfloop transitions, 54 changer transitions 25/634 dead transitions. [2022-11-21 16:56:25,809 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 427 places, 634 transitions, 2848 flow [2022-11-21 16:56:25,809 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2022-11-21 16:56:25,810 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2022-11-21 16:56:25,823 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 7418 transitions. [2022-11-21 16:56:25,827 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6398136967396929 [2022-11-21 16:56:25,827 INFO L72 ComplementDD]: Start complementDD. Operand 31 states and 7418 transitions. [2022-11-21 16:56:25,828 INFO L73 IsDeterministic]: Start isDeterministic. Operand 31 states and 7418 transitions. [2022-11-21 16:56:25,832 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 16:56:25,833 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 31 states and 7418 transitions. [2022-11-21 16:56:25,851 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 32 states, 31 states have (on average 239.29032258064515) internal successors, (7418), 31 states have internal predecessors, (7418), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:56:25,872 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 32 states, 32 states have (on average 374.0) internal successors, (11968), 32 states have internal predecessors, (11968), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:56:25,876 INFO L81 ComplementDD]: Finished complementDD. Result has 32 states, 32 states have (on average 374.0) internal successors, (11968), 32 states have internal predecessors, (11968), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:56:25,877 INFO L175 Difference]: Start difference. First operand has 405 places, 368 transitions, 1005 flow. Second operand 31 states and 7418 transitions. [2022-11-21 16:56:25,877 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 427 places, 634 transitions, 2848 flow [2022-11-21 16:56:25,959 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 415 places, 634 transitions, 2603 flow, removed 54 selfloop flow, removed 12 redundant places. [2022-11-21 16:56:25,970 INFO L231 Difference]: Finished difference. Result has 443 places, 404 transitions, 1411 flow [2022-11-21 16:56:25,971 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=374, PETRI_DIFFERENCE_MINUEND_FLOW=973, PETRI_DIFFERENCE_MINUEND_PLACES=385, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=368, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=334, PETRI_DIFFERENCE_SUBTRAHEND_STATES=31, PETRI_FLOW=1411, PETRI_PLACES=443, PETRI_TRANSITIONS=404} [2022-11-21 16:56:25,972 INFO L288 CegarLoopForPetriNet]: 342 programPoint places, 101 predicate places. [2022-11-21 16:56:25,972 INFO L495 AbstractCegarLoop]: Abstraction has has 443 places, 404 transitions, 1411 flow [2022-11-21 16:56:25,974 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 233.75) internal successors, (3740), 16 states have internal predecessors, (3740), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:56:25,974 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 16:56:25,974 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 16:56:25,975 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-21 16:56:25,975 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-21 16:56:25,975 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:56:25,976 INFO L85 PathProgramCache]: Analyzing trace with hash 801899956, now seen corresponding path program 3 times [2022-11-21 16:56:25,976 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:56:25,979 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1845063225] [2022-11-21 16:56:25,979 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:56:25,979 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:56:26,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:56:27,904 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-21 16:56:27,904 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:56:27,904 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1845063225] [2022-11-21 16:56:27,905 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1845063225] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:56:27,905 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:56:27,905 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2022-11-21 16:56:27,905 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1881515105] [2022-11-21 16:56:27,905 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:56:27,906 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-11-21 16:56:27,906 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:56:27,906 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-11-21 16:56:27,906 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=208, Unknown=0, NotChecked=0, Total=240 [2022-11-21 16:56:27,909 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 227 out of 374 [2022-11-21 16:56:27,913 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 443 places, 404 transitions, 1411 flow. Second operand has 16 states, 16 states have (on average 233.75) internal successors, (3740), 16 states have internal predecessors, (3740), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:56:27,913 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 16:56:27,913 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 227 of 374 [2022-11-21 16:56:27,914 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 16:56:32,636 INFO L130 PetriNetUnfolder]: 2461/9945 cut-off events. [2022-11-21 16:56:32,637 INFO L131 PetriNetUnfolder]: For 12602/12637 co-relation queries the response was YES. [2022-11-21 16:56:32,690 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21529 conditions, 9945 events. 2461/9945 cut-off events. For 12602/12637 co-relation queries the response was YES. Maximal size of possible extension queue 272. Compared 105921 event pairs, 356 based on Foata normal form. 16/9501 useless extension candidates. Maximal degree in co-relation 21466. Up to 2862 conditions per place. [2022-11-21 16:56:32,731 INFO L137 encePairwiseOnDemand]: 353/374 looper letters, 295 selfloop transitions, 46 changer transitions 15/583 dead transitions. [2022-11-21 16:56:32,732 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 457 places, 583 transitions, 3319 flow [2022-11-21 16:56:32,733 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-11-21 16:56:32,733 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2022-11-21 16:56:32,741 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 5480 transitions. [2022-11-21 16:56:32,744 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6370611485701 [2022-11-21 16:56:32,744 INFO L72 ComplementDD]: Start complementDD. Operand 23 states and 5480 transitions. [2022-11-21 16:56:32,744 INFO L73 IsDeterministic]: Start isDeterministic. Operand 23 states and 5480 transitions. [2022-11-21 16:56:32,747 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 16:56:32,748 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 23 states and 5480 transitions. [2022-11-21 16:56:32,760 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 24 states, 23 states have (on average 238.2608695652174) internal successors, (5480), 23 states have internal predecessors, (5480), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:56:32,774 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 24 states, 24 states have (on average 374.0) internal successors, (8976), 24 states have internal predecessors, (8976), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:56:32,778 INFO L81 ComplementDD]: Finished complementDD. Result has 24 states, 24 states have (on average 374.0) internal successors, (8976), 24 states have internal predecessors, (8976), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:56:32,779 INFO L175 Difference]: Start difference. First operand has 443 places, 404 transitions, 1411 flow. Second operand 23 states and 5480 transitions. [2022-11-21 16:56:32,779 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 457 places, 583 transitions, 3319 flow [2022-11-21 16:56:32,889 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 450 places, 583 transitions, 3037 flow, removed 141 selfloop flow, removed 7 redundant places. [2022-11-21 16:56:32,898 INFO L231 Difference]: Finished difference. Result has 466 places, 428 transitions, 1723 flow [2022-11-21 16:56:32,899 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=374, PETRI_DIFFERENCE_MINUEND_FLOW=1321, PETRI_DIFFERENCE_MINUEND_PLACES=428, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=404, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=368, PETRI_DIFFERENCE_SUBTRAHEND_STATES=23, PETRI_FLOW=1723, PETRI_PLACES=466, PETRI_TRANSITIONS=428} [2022-11-21 16:56:32,900 INFO L288 CegarLoopForPetriNet]: 342 programPoint places, 124 predicate places. [2022-11-21 16:56:32,900 INFO L495 AbstractCegarLoop]: Abstraction has has 466 places, 428 transitions, 1723 flow [2022-11-21 16:56:32,901 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 233.75) internal successors, (3740), 16 states have internal predecessors, (3740), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:56:32,901 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 16:56:32,902 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 16:56:32,902 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-21 16:56:32,902 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-21 16:56:32,903 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:56:32,903 INFO L85 PathProgramCache]: Analyzing trace with hash -1769371254, now seen corresponding path program 4 times [2022-11-21 16:56:32,903 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:56:32,903 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1353456181] [2022-11-21 16:56:32,904 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:56:32,904 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:56:33,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:56:34,987 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-21 16:56:34,988 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:56:34,988 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1353456181] [2022-11-21 16:56:34,988 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1353456181] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:56:34,988 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:56:34,988 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2022-11-21 16:56:34,988 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1458749863] [2022-11-21 16:56:34,989 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:56:34,989 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-11-21 16:56:34,989 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:56:34,990 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-11-21 16:56:34,990 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=209, Unknown=0, NotChecked=0, Total=240 [2022-11-21 16:56:34,993 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 227 out of 374 [2022-11-21 16:56:34,997 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 466 places, 428 transitions, 1723 flow. Second operand has 16 states, 16 states have (on average 233.75) internal successors, (3740), 16 states have internal predecessors, (3740), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:56:34,998 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 16:56:34,998 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 227 of 374 [2022-11-21 16:56:34,998 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 16:56:40,852 INFO L130 PetriNetUnfolder]: 2590/10030 cut-off events. [2022-11-21 16:56:40,852 INFO L131 PetriNetUnfolder]: For 14438/14478 co-relation queries the response was YES. [2022-11-21 16:56:40,918 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22531 conditions, 10030 events. 2590/10030 cut-off events. For 14438/14478 co-relation queries the response was YES. Maximal size of possible extension queue 282. Compared 106804 event pairs, 456 based on Foata normal form. 25/9618 useless extension candidates. Maximal degree in co-relation 22458. Up to 1671 conditions per place. [2022-11-21 16:56:40,955 INFO L137 encePairwiseOnDemand]: 352/374 looper letters, 316 selfloop transitions, 80 changer transitions 25/648 dead transitions. [2022-11-21 16:56:40,955 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 490 places, 648 transitions, 3811 flow [2022-11-21 16:56:40,956 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-11-21 16:56:40,956 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2022-11-21 16:56:40,965 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 7157 transitions. [2022-11-21 16:56:40,969 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6378787878787879 [2022-11-21 16:56:40,969 INFO L72 ComplementDD]: Start complementDD. Operand 30 states and 7157 transitions. [2022-11-21 16:56:40,969 INFO L73 IsDeterministic]: Start isDeterministic. Operand 30 states and 7157 transitions. [2022-11-21 16:56:40,974 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 16:56:40,974 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 30 states and 7157 transitions. [2022-11-21 16:56:40,991 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 31 states, 30 states have (on average 238.56666666666666) internal successors, (7157), 30 states have internal predecessors, (7157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:56:41,014 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 31 states, 31 states have (on average 374.0) internal successors, (11594), 31 states have internal predecessors, (11594), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:56:41,019 INFO L81 ComplementDD]: Finished complementDD. Result has 31 states, 31 states have (on average 374.0) internal successors, (11594), 31 states have internal predecessors, (11594), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:56:41,023 INFO L175 Difference]: Start difference. First operand has 466 places, 428 transitions, 1723 flow. Second operand 30 states and 7157 transitions. [2022-11-21 16:56:41,023 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 490 places, 648 transitions, 3811 flow [2022-11-21 16:56:41,131 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 483 places, 648 transitions, 3602 flow, removed 79 selfloop flow, removed 7 redundant places. [2022-11-21 16:56:41,143 INFO L231 Difference]: Finished difference. Result has 504 places, 449 transitions, 2084 flow [2022-11-21 16:56:41,144 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=374, PETRI_DIFFERENCE_MINUEND_FLOW=1609, PETRI_DIFFERENCE_MINUEND_PLACES=454, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=428, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=59, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=362, PETRI_DIFFERENCE_SUBTRAHEND_STATES=30, PETRI_FLOW=2084, PETRI_PLACES=504, PETRI_TRANSITIONS=449} [2022-11-21 16:56:41,144 INFO L288 CegarLoopForPetriNet]: 342 programPoint places, 162 predicate places. [2022-11-21 16:56:41,145 INFO L495 AbstractCegarLoop]: Abstraction has has 504 places, 449 transitions, 2084 flow [2022-11-21 16:56:41,146 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 233.75) internal successors, (3740), 16 states have internal predecessors, (3740), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:56:41,146 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 16:56:41,146 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 16:56:41,147 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-21 16:56:41,147 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-21 16:56:41,147 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:56:41,148 INFO L85 PathProgramCache]: Analyzing trace with hash 1628135536, now seen corresponding path program 5 times [2022-11-21 16:56:41,148 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:56:41,148 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1481838961] [2022-11-21 16:56:41,148 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:56:41,149 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:56:41,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:56:43,175 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-21 16:56:43,175 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:56:43,175 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1481838961] [2022-11-21 16:56:43,175 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1481838961] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:56:43,176 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:56:43,176 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2022-11-21 16:56:43,176 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1120192354] [2022-11-21 16:56:43,176 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:56:43,176 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-11-21 16:56:43,177 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:56:43,177 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-11-21 16:56:43,177 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=209, Unknown=0, NotChecked=0, Total=240 [2022-11-21 16:56:43,180 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 227 out of 374 [2022-11-21 16:56:43,184 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 504 places, 449 transitions, 2084 flow. Second operand has 16 states, 16 states have (on average 233.75) internal successors, (3740), 16 states have internal predecessors, (3740), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:56:43,184 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 16:56:43,184 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 227 of 374 [2022-11-21 16:56:43,185 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 16:56:50,049 INFO L130 PetriNetUnfolder]: 3342/12941 cut-off events. [2022-11-21 16:56:50,049 INFO L131 PetriNetUnfolder]: For 32714/32792 co-relation queries the response was YES. [2022-11-21 16:56:50,149 INFO L83 FinitePrefix]: Finished finitePrefix Result has 32767 conditions, 12941 events. 3342/12941 cut-off events. For 32714/32792 co-relation queries the response was YES. Maximal size of possible extension queue 353. Compared 144889 event pairs, 452 based on Foata normal form. 49/12431 useless extension candidates. Maximal degree in co-relation 32677. Up to 2223 conditions per place. [2022-11-21 16:56:50,200 INFO L137 encePairwiseOnDemand]: 352/374 looper letters, 433 selfloop transitions, 95 changer transitions 23/778 dead transitions. [2022-11-21 16:56:50,200 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 532 places, 778 transitions, 5500 flow [2022-11-21 16:56:50,200 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2022-11-21 16:56:50,201 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2022-11-21 16:56:50,212 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 8828 transitions. [2022-11-21 16:56:50,217 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6379534614828732 [2022-11-21 16:56:50,217 INFO L72 ComplementDD]: Start complementDD. Operand 37 states and 8828 transitions. [2022-11-21 16:56:50,217 INFO L73 IsDeterministic]: Start isDeterministic. Operand 37 states and 8828 transitions. [2022-11-21 16:56:50,222 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 16:56:50,222 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 37 states and 8828 transitions. [2022-11-21 16:56:50,241 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 38 states, 37 states have (on average 238.59459459459458) internal successors, (8828), 37 states have internal predecessors, (8828), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:56:50,260 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 38 states, 38 states have (on average 374.0) internal successors, (14212), 38 states have internal predecessors, (14212), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:56:50,266 INFO L81 ComplementDD]: Finished complementDD. Result has 38 states, 38 states have (on average 374.0) internal successors, (14212), 38 states have internal predecessors, (14212), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:56:50,266 INFO L175 Difference]: Start difference. First operand has 504 places, 449 transitions, 2084 flow. Second operand 37 states and 8828 transitions. [2022-11-21 16:56:50,266 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 532 places, 778 transitions, 5500 flow [2022-11-21 16:56:50,496 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 519 places, 778 transitions, 5111 flow, removed 119 selfloop flow, removed 13 redundant places. [2022-11-21 16:56:50,509 INFO L231 Difference]: Finished difference. Result has 552 places, 485 transitions, 2713 flow [2022-11-21 16:56:50,510 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=374, PETRI_DIFFERENCE_MINUEND_FLOW=1884, PETRI_DIFFERENCE_MINUEND_PLACES=483, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=449, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=59, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=378, PETRI_DIFFERENCE_SUBTRAHEND_STATES=37, PETRI_FLOW=2713, PETRI_PLACES=552, PETRI_TRANSITIONS=485} [2022-11-21 16:56:50,511 INFO L288 CegarLoopForPetriNet]: 342 programPoint places, 210 predicate places. [2022-11-21 16:56:50,511 INFO L495 AbstractCegarLoop]: Abstraction has has 552 places, 485 transitions, 2713 flow [2022-11-21 16:56:50,512 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 233.75) internal successors, (3740), 16 states have internal predecessors, (3740), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:56:50,512 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 16:56:50,512 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 16:56:50,513 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-11-21 16:56:50,513 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-21 16:56:50,513 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:56:50,514 INFO L85 PathProgramCache]: Analyzing trace with hash -835821050, now seen corresponding path program 6 times [2022-11-21 16:56:50,514 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:56:50,514 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2144558735] [2022-11-21 16:56:50,514 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:56:50,514 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:56:50,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:56:52,434 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-21 16:56:52,434 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:56:52,434 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2144558735] [2022-11-21 16:56:52,434 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2144558735] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:56:52,434 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:56:52,434 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2022-11-21 16:56:52,435 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [950353859] [2022-11-21 16:56:52,435 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:56:52,435 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-11-21 16:56:52,435 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:56:52,436 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-11-21 16:56:52,436 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=208, Unknown=0, NotChecked=0, Total=240 [2022-11-21 16:56:52,439 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 227 out of 374 [2022-11-21 16:56:52,442 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 552 places, 485 transitions, 2713 flow. Second operand has 16 states, 16 states have (on average 233.75) internal successors, (3740), 16 states have internal predecessors, (3740), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:56:52,442 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 16:56:52,442 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 227 of 374 [2022-11-21 16:56:52,442 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 16:56:59,054 INFO L130 PetriNetUnfolder]: 3463/14105 cut-off events. [2022-11-21 16:56:59,054 INFO L131 PetriNetUnfolder]: For 61338/61468 co-relation queries the response was YES. [2022-11-21 16:56:59,198 INFO L83 FinitePrefix]: Finished finitePrefix Result has 38700 conditions, 14105 events. 3463/14105 cut-off events. For 61338/61468 co-relation queries the response was YES. Maximal size of possible extension queue 401. Compared 163241 event pairs, 766 based on Foata normal form. 55/13559 useless extension candidates. Maximal degree in co-relation 38584. Up to 3130 conditions per place. [2022-11-21 16:56:59,247 INFO L137 encePairwiseOnDemand]: 352/374 looper letters, 373 selfloop transitions, 89 changer transitions 19/708 dead transitions. [2022-11-21 16:56:59,248 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 567 places, 708 transitions, 5866 flow [2022-11-21 16:56:59,248 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-11-21 16:56:59,248 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2022-11-21 16:56:59,254 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 5772 transitions. [2022-11-21 16:56:59,257 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.643048128342246 [2022-11-21 16:56:59,258 INFO L72 ComplementDD]: Start complementDD. Operand 24 states and 5772 transitions. [2022-11-21 16:56:59,258 INFO L73 IsDeterministic]: Start isDeterministic. Operand 24 states and 5772 transitions. [2022-11-21 16:56:59,260 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 16:56:59,260 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 24 states and 5772 transitions. [2022-11-21 16:56:59,270 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 25 states, 24 states have (on average 240.5) internal successors, (5772), 24 states have internal predecessors, (5772), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:56:59,280 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 25 states, 25 states have (on average 374.0) internal successors, (9350), 25 states have internal predecessors, (9350), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:56:59,282 INFO L81 ComplementDD]: Finished complementDD. Result has 25 states, 25 states have (on average 374.0) internal successors, (9350), 25 states have internal predecessors, (9350), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:56:59,283 INFO L175 Difference]: Start difference. First operand has 552 places, 485 transitions, 2713 flow. Second operand 24 states and 5772 transitions. [2022-11-21 16:56:59,283 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 567 places, 708 transitions, 5866 flow [2022-11-21 16:56:59,613 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 557 places, 708 transitions, 5461 flow, removed 176 selfloop flow, removed 10 redundant places. [2022-11-21 16:56:59,626 INFO L231 Difference]: Finished difference. Result has 573 places, 507 transitions, 3145 flow [2022-11-21 16:56:59,627 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=374, PETRI_DIFFERENCE_MINUEND_FLOW=2470, PETRI_DIFFERENCE_MINUEND_PLACES=534, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=485, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=71, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=406, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=3145, PETRI_PLACES=573, PETRI_TRANSITIONS=507} [2022-11-21 16:56:59,629 INFO L288 CegarLoopForPetriNet]: 342 programPoint places, 231 predicate places. [2022-11-21 16:56:59,629 INFO L495 AbstractCegarLoop]: Abstraction has has 573 places, 507 transitions, 3145 flow [2022-11-21 16:56:59,630 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 233.75) internal successors, (3740), 16 states have internal predecessors, (3740), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:56:59,630 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 16:56:59,631 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 16:56:59,631 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-11-21 16:56:59,631 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-21 16:56:59,632 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:56:59,632 INFO L85 PathProgramCache]: Analyzing trace with hash -1192984804, now seen corresponding path program 7 times [2022-11-21 16:56:59,632 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:56:59,632 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2086389436] [2022-11-21 16:56:59,632 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:56:59,633 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:56:59,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:57:01,237 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-21 16:57:01,237 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:57:01,237 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2086389436] [2022-11-21 16:57:01,238 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2086389436] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:57:01,238 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:57:01,238 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2022-11-21 16:57:01,238 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2025215697] [2022-11-21 16:57:01,238 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:57:01,239 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-11-21 16:57:01,239 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:57:01,240 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-11-21 16:57:01,240 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=209, Unknown=0, NotChecked=0, Total=240 [2022-11-21 16:57:01,243 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 227 out of 374 [2022-11-21 16:57:01,247 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 573 places, 507 transitions, 3145 flow. Second operand has 16 states, 16 states have (on average 233.75) internal successors, (3740), 16 states have internal predecessors, (3740), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:57:01,247 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 16:57:01,247 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 227 of 374 [2022-11-21 16:57:01,247 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 16:57:08,976 INFO L130 PetriNetUnfolder]: 4056/16061 cut-off events. [2022-11-21 16:57:08,976 INFO L131 PetriNetUnfolder]: For 68590/68744 co-relation queries the response was YES. [2022-11-21 16:57:09,143 INFO L83 FinitePrefix]: Finished finitePrefix Result has 44873 conditions, 16061 events. 4056/16061 cut-off events. For 68590/68744 co-relation queries the response was YES. Maximal size of possible extension queue 448. Compared 189519 event pairs, 528 based on Foata normal form. 88/15469 useless extension candidates. Maximal degree in co-relation 44748. Up to 2223 conditions per place. [2022-11-21 16:57:09,191 INFO L137 encePairwiseOnDemand]: 352/374 looper letters, 474 selfloop transitions, 121 changer transitions 23/845 dead transitions. [2022-11-21 16:57:09,191 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 604 places, 845 transitions, 7126 flow [2022-11-21 16:57:09,191 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2022-11-21 16:57:09,192 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2022-11-21 16:57:09,207 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 8843 transitions. [2022-11-21 16:57:09,216 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6390374331550802 [2022-11-21 16:57:09,216 INFO L72 ComplementDD]: Start complementDD. Operand 37 states and 8843 transitions. [2022-11-21 16:57:09,216 INFO L73 IsDeterministic]: Start isDeterministic. Operand 37 states and 8843 transitions. [2022-11-21 16:57:09,221 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 16:57:09,221 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 37 states and 8843 transitions. [2022-11-21 16:57:09,246 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 38 states, 37 states have (on average 239.0) internal successors, (8843), 37 states have internal predecessors, (8843), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:57:09,260 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 38 states, 38 states have (on average 374.0) internal successors, (14212), 38 states have internal predecessors, (14212), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:57:09,263 INFO L81 ComplementDD]: Finished complementDD. Result has 38 states, 38 states have (on average 374.0) internal successors, (14212), 38 states have internal predecessors, (14212), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:57:09,263 INFO L175 Difference]: Start difference. First operand has 573 places, 507 transitions, 3145 flow. Second operand 37 states and 8843 transitions. [2022-11-21 16:57:09,264 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 604 places, 845 transitions, 7126 flow [2022-11-21 16:57:09,722 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 593 places, 845 transitions, 6553 flow, removed 211 selfloop flow, removed 11 redundant places. [2022-11-21 16:57:09,728 INFO L231 Difference]: Finished difference. Result has 614 places, 525 transitions, 3493 flow [2022-11-21 16:57:09,729 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=374, PETRI_DIFFERENCE_MINUEND_FLOW=2828, PETRI_DIFFERENCE_MINUEND_PLACES=557, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=507, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=103, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=398, PETRI_DIFFERENCE_SUBTRAHEND_STATES=37, PETRI_FLOW=3493, PETRI_PLACES=614, PETRI_TRANSITIONS=525} [2022-11-21 16:57:09,729 INFO L288 CegarLoopForPetriNet]: 342 programPoint places, 272 predicate places. [2022-11-21 16:57:09,730 INFO L495 AbstractCegarLoop]: Abstraction has has 614 places, 525 transitions, 3493 flow [2022-11-21 16:57:09,730 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 233.75) internal successors, (3740), 16 states have internal predecessors, (3740), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:57:09,730 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 16:57:09,730 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 16:57:09,730 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-11-21 16:57:09,731 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-21 16:57:09,731 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:57:09,731 INFO L85 PathProgramCache]: Analyzing trace with hash -1046098234, now seen corresponding path program 8 times [2022-11-21 16:57:09,731 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:57:09,732 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [847518379] [2022-11-21 16:57:09,732 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:57:09,732 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:57:09,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:57:12,031 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-21 16:57:12,032 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:57:12,032 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [847518379] [2022-11-21 16:57:12,032 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [847518379] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:57:12,032 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:57:12,033 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2022-11-21 16:57:12,033 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [340505161] [2022-11-21 16:57:12,033 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:57:12,034 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-11-21 16:57:12,034 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:57:12,034 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-11-21 16:57:12,034 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=207, Unknown=0, NotChecked=0, Total=240 [2022-11-21 16:57:12,040 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 227 out of 374 [2022-11-21 16:57:12,044 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 614 places, 525 transitions, 3493 flow. Second operand has 16 states, 16 states have (on average 233.75) internal successors, (3740), 16 states have internal predecessors, (3740), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:57:12,044 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 16:57:12,044 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 227 of 374 [2022-11-21 16:57:12,044 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 16:57:22,060 INFO L130 PetriNetUnfolder]: 4748/19962 cut-off events. [2022-11-21 16:57:22,061 INFO L131 PetriNetUnfolder]: For 99375/99575 co-relation queries the response was YES. [2022-11-21 16:57:22,332 INFO L83 FinitePrefix]: Finished finitePrefix Result has 55537 conditions, 19962 events. 4748/19962 cut-off events. For 99375/99575 co-relation queries the response was YES. Maximal size of possible extension queue 582. Compared 248869 event pairs, 860 based on Foata normal form. 95/19210 useless extension candidates. Maximal degree in co-relation 55396. Up to 3741 conditions per place. [2022-11-21 16:57:22,393 INFO L137 encePairwiseOnDemand]: 352/374 looper letters, 487 selfloop transitions, 117 changer transitions 25/856 dead transitions. [2022-11-21 16:57:22,393 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 639 places, 856 transitions, 7704 flow [2022-11-21 16:57:22,394 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2022-11-21 16:57:22,394 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2022-11-21 16:57:22,401 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 8143 transitions. [2022-11-21 16:57:22,403 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6403743315508021 [2022-11-21 16:57:22,403 INFO L72 ComplementDD]: Start complementDD. Operand 34 states and 8143 transitions. [2022-11-21 16:57:22,404 INFO L73 IsDeterministic]: Start isDeterministic. Operand 34 states and 8143 transitions. [2022-11-21 16:57:22,406 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 16:57:22,406 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 34 states and 8143 transitions. [2022-11-21 16:57:22,417 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 35 states, 34 states have (on average 239.5) internal successors, (8143), 34 states have internal predecessors, (8143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:57:22,428 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 35 states, 35 states have (on average 374.0) internal successors, (13090), 35 states have internal predecessors, (13090), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:57:22,431 INFO L81 ComplementDD]: Finished complementDD. Result has 35 states, 35 states have (on average 374.0) internal successors, (13090), 35 states have internal predecessors, (13090), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:57:22,431 INFO L175 Difference]: Start difference. First operand has 614 places, 525 transitions, 3493 flow. Second operand 34 states and 8143 transitions. [2022-11-21 16:57:22,431 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 639 places, 856 transitions, 7704 flow [2022-11-21 16:57:23,145 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 617 places, 856 transitions, 7175 flow, removed 139 selfloop flow, removed 22 redundant places. [2022-11-21 16:57:23,153 INFO L231 Difference]: Finished difference. Result has 639 places, 548 transitions, 3918 flow [2022-11-21 16:57:23,154 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=374, PETRI_DIFFERENCE_MINUEND_FLOW=3132, PETRI_DIFFERENCE_MINUEND_PLACES=584, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=525, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=96, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=420, PETRI_DIFFERENCE_SUBTRAHEND_STATES=34, PETRI_FLOW=3918, PETRI_PLACES=639, PETRI_TRANSITIONS=548} [2022-11-21 16:57:23,155 INFO L288 CegarLoopForPetriNet]: 342 programPoint places, 297 predicate places. [2022-11-21 16:57:23,155 INFO L495 AbstractCegarLoop]: Abstraction has has 639 places, 548 transitions, 3918 flow [2022-11-21 16:57:23,155 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 233.75) internal successors, (3740), 16 states have internal predecessors, (3740), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:57:23,156 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 16:57:23,156 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 16:57:23,156 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-11-21 16:57:23,156 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-21 16:57:23,157 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:57:23,157 INFO L85 PathProgramCache]: Analyzing trace with hash -1792765506, now seen corresponding path program 9 times [2022-11-21 16:57:23,157 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:57:23,157 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [956358107] [2022-11-21 16:57:23,158 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:57:23,158 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:57:23,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:57:24,760 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-21 16:57:24,760 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:57:24,760 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [956358107] [2022-11-21 16:57:24,760 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [956358107] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:57:24,760 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:57:24,761 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2022-11-21 16:57:24,761 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [839762917] [2022-11-21 16:57:24,761 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:57:24,763 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-11-21 16:57:24,763 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:57:24,763 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-11-21 16:57:24,764 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=209, Unknown=0, NotChecked=0, Total=240 [2022-11-21 16:57:24,767 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 227 out of 374 [2022-11-21 16:57:24,770 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 639 places, 548 transitions, 3918 flow. Second operand has 16 states, 16 states have (on average 233.75) internal successors, (3740), 16 states have internal predecessors, (3740), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:57:24,770 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 16:57:24,770 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 227 of 374 [2022-11-21 16:57:24,770 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand