./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/weaver/chl-nzb-file-symm.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version b5237d83 Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_080535e5-0f83-4092-b5ba-305e5515349f/bin/uautomizer-vX5HgA9Q3a/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_080535e5-0f83-4092-b5ba-305e5515349f/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_080535e5-0f83-4092-b5ba-305e5515349f/bin/uautomizer-vX5HgA9Q3a/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_080535e5-0f83-4092-b5ba-305e5515349f/bin/uautomizer-vX5HgA9Q3a/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/chl-nzb-file-symm.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_080535e5-0f83-4092-b5ba-305e5515349f/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_080535e5-0f83-4092-b5ba-305e5515349f/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 b869eaba59e8dca8d7cb2d1135193e506b8377811cada7a7f67b6d0824dd2d3d --- 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 16:39:49,637 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-21 16:39:49,640 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-21 16:39:49,666 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-21 16:39:49,666 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-21 16:39:49,668 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-21 16:39:49,669 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-21 16:39:49,671 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-21 16:39:49,674 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-21 16:39:49,675 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-21 16:39:49,676 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-21 16:39:49,678 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-21 16:39:49,678 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-21 16:39:49,680 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-21 16:39:49,681 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-21 16:39:49,683 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-21 16:39:49,684 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-21 16:39:49,685 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-21 16:39:49,688 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-21 16:39:49,690 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-21 16:39:49,692 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-21 16:39:49,694 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-21 16:39:49,696 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-21 16:39:49,697 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-21 16:39:49,704 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-21 16:39:49,708 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-21 16:39:49,709 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-21 16:39:49,710 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-21 16:39:49,715 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-21 16:39:49,716 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-21 16:39:49,717 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-21 16:39:49,719 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-21 16:39:49,721 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-21 16:39:49,723 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-21 16:39:49,726 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-21 16:39:49,728 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-21 16:39:49,730 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-21 16:39:49,732 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-21 16:39:49,733 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-21 16:39:49,734 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-21 16:39:49,735 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-21 16:39:49,736 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_080535e5-0f83-4092-b5ba-305e5515349f/bin/uautomizer-vX5HgA9Q3a/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-11-21 16:39:49,765 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-21 16:39:49,765 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-21 16:39:49,766 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-21 16:39:49,766 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-21 16:39:49,767 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-21 16:39:49,767 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-21 16:39:49,768 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-21 16:39:49,768 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-21 16:39:49,769 INFO L138 SettingsManager]: * Use SBE=true [2022-11-21 16:39:49,769 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-21 16:39:49,769 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-21 16:39:49,770 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-21 16:39:49,770 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-21 16:39:49,770 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-21 16:39:49,770 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-21 16:39:49,771 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-21 16:39:49,771 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-21 16:39:49,771 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-21 16:39:49,772 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-21 16:39:49,772 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-21 16:39:49,772 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-21 16:39:49,772 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-21 16:39:49,773 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-21 16:39:49,773 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-21 16:39:49,773 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-21 16:39:49,774 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-21 16:39:49,774 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-21 16:39:49,774 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-21 16:39:49,775 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-21 16:39:49,775 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-21 16:39:49,775 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-21 16:39:49,775 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-21 16:39:49,776 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-21 16:39:49,776 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_080535e5-0f83-4092-b5ba-305e5515349f/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_080535e5-0f83-4092-b5ba-305e5515349f/bin/uautomizer-vX5HgA9Q3a Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b869eaba59e8dca8d7cb2d1135193e506b8377811cada7a7f67b6d0824dd2d3d [2022-11-21 16:39:50,119 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-21 16:39:50,147 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-21 16:39:50,150 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-21 16:39:50,152 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-21 16:39:50,152 INFO L275 PluginConnector]: CDTParser initialized [2022-11-21 16:39:50,154 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_080535e5-0f83-4092-b5ba-305e5515349f/bin/uautomizer-vX5HgA9Q3a/../../sv-benchmarks/c/weaver/chl-nzb-file-symm.wvr.c [2022-11-21 16:39:53,384 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-21 16:39:53,716 INFO L351 CDTParser]: Found 1 translation units. [2022-11-21 16:39:53,722 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_080535e5-0f83-4092-b5ba-305e5515349f/sv-benchmarks/c/weaver/chl-nzb-file-symm.wvr.c [2022-11-21 16:39:53,735 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_080535e5-0f83-4092-b5ba-305e5515349f/bin/uautomizer-vX5HgA9Q3a/data/d83a1e725/f876687366e8420398f2cb31fdfa1ae5/FLAG6993a7112 [2022-11-21 16:39:53,761 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_080535e5-0f83-4092-b5ba-305e5515349f/bin/uautomizer-vX5HgA9Q3a/data/d83a1e725/f876687366e8420398f2cb31fdfa1ae5 [2022-11-21 16:39:53,767 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-21 16:39:53,771 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-21 16:39:53,774 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-21 16:39:53,774 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-21 16:39:53,779 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-21 16:39:53,780 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 04:39:53" (1/1) ... [2022-11-21 16:39:53,781 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@129360cb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:39:53, skipping insertion in model container [2022-11-21 16:39:53,781 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 04:39:53" (1/1) ... [2022-11-21 16:39:53,790 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-21 16:39:53,837 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-21 16:39:54,130 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_080535e5-0f83-4092-b5ba-305e5515349f/sv-benchmarks/c/weaver/chl-nzb-file-symm.wvr.c[4929,4942] [2022-11-21 16:39:54,143 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-21 16:39:54,156 INFO L203 MainTranslator]: Completed pre-run [2022-11-21 16:39:54,202 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_080535e5-0f83-4092-b5ba-305e5515349f/sv-benchmarks/c/weaver/chl-nzb-file-symm.wvr.c[4929,4942] [2022-11-21 16:39:54,207 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-21 16:39:54,226 INFO L208 MainTranslator]: Completed translation [2022-11-21 16:39:54,227 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:39:54 WrapperNode [2022-11-21 16:39:54,227 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-21 16:39:54,229 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-21 16:39:54,229 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-21 16:39:54,229 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-21 16:39:54,240 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:39:54" (1/1) ... [2022-11-21 16:39:54,253 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:39:54" (1/1) ... [2022-11-21 16:39:54,304 INFO L138 Inliner]: procedures = 25, calls = 55, calls flagged for inlining = 21, calls inlined = 29, statements flattened = 388 [2022-11-21 16:39:54,305 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-21 16:39:54,306 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-21 16:39:54,306 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-21 16:39:54,306 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-21 16:39:54,318 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:39:54" (1/1) ... [2022-11-21 16:39:54,319 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:39:54" (1/1) ... [2022-11-21 16:39:54,324 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:39:54" (1/1) ... [2022-11-21 16:39:54,325 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:39:54" (1/1) ... [2022-11-21 16:39:54,339 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:39:54" (1/1) ... [2022-11-21 16:39:54,346 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:39:54" (1/1) ... [2022-11-21 16:39:54,349 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:39:54" (1/1) ... [2022-11-21 16:39:54,351 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:39:54" (1/1) ... [2022-11-21 16:39:54,356 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-21 16:39:54,357 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-21 16:39:54,357 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-21 16:39:54,357 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-21 16:39:54,359 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:39:54" (1/1) ... [2022-11-21 16:39:54,366 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-21 16:39:54,382 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_080535e5-0f83-4092-b5ba-305e5515349f/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 16:39:54,398 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_080535e5-0f83-4092-b5ba-305e5515349f/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-21 16:39:54,418 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_080535e5-0f83-4092-b5ba-305e5515349f/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-21 16:39:54,462 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-21 16:39:54,463 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-21 16:39:54,463 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-21 16:39:54,463 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-21 16:39:54,463 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-11-21 16:39:54,464 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-11-21 16:39:54,464 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-11-21 16:39:54,466 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-11-21 16:39:54,466 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-21 16:39:54,467 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-21 16:39:54,468 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-21 16:39:54,468 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-21 16:39:54,468 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-21 16:39:54,470 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 16:39:54,726 INFO L235 CfgBuilder]: Building ICFG [2022-11-21 16:39:54,729 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-21 16:39:55,526 INFO L276 CfgBuilder]: Performing block encoding [2022-11-21 16:39:55,575 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-21 16:39:55,575 INFO L300 CfgBuilder]: Removed 4 assume(true) statements. [2022-11-21 16:39:55,580 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 04:39:55 BoogieIcfgContainer [2022-11-21 16:39:55,580 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-21 16:39:55,584 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-21 16:39:55,584 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-21 16:39:55,588 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-21 16:39:55,588 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.11 04:39:53" (1/3) ... [2022-11-21 16:39:55,589 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@31ac14d1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 04:39:55, skipping insertion in model container [2022-11-21 16:39:55,589 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:39:54" (2/3) ... [2022-11-21 16:39:55,590 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@31ac14d1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 04:39:55, skipping insertion in model container [2022-11-21 16:39:55,590 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 04:39:55" (3/3) ... [2022-11-21 16:39:55,592 INFO L112 eAbstractionObserver]: Analyzing ICFG chl-nzb-file-symm.wvr.c [2022-11-21 16:39:55,603 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-21 16:39:55,616 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-21 16:39:55,617 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-21 16:39:55,617 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-21 16:39:55,833 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-11-21 16:39:55,918 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 474 places, 516 transitions, 1048 flow [2022-11-21 16:39:56,258 INFO L130 PetriNetUnfolder]: 49/514 cut-off events. [2022-11-21 16:39:56,258 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-11-21 16:39:56,279 INFO L83 FinitePrefix]: Finished finitePrefix Result has 523 conditions, 514 events. 49/514 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 1536 event pairs, 0 based on Foata normal form. 0/464 useless extension candidates. Maximal degree in co-relation 353. Up to 2 conditions per place. [2022-11-21 16:39:56,280 INFO L82 GeneralOperation]: Start removeDead. Operand has 474 places, 516 transitions, 1048 flow [2022-11-21 16:39:56,291 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 463 places, 505 transitions, 1022 flow [2022-11-21 16:39:56,303 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-21 16:39:56,312 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;@54a36c82, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-21 16:39:56,312 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2022-11-21 16:39:56,512 INFO L130 PetriNetUnfolder]: 46/491 cut-off events. [2022-11-21 16:39:56,512 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-11-21 16:39:56,513 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 16:39:56,515 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] [2022-11-21 16:39:56,515 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 16:39:56,522 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:39:56,523 INFO L85 PathProgramCache]: Analyzing trace with hash 630364366, now seen corresponding path program 1 times [2022-11-21 16:39:56,535 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:39:56,535 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1799032305] [2022-11-21 16:39:56,536 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:39:56,537 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:39:56,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:39:57,045 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 16:39:57,046 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:39:57,047 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1799032305] [2022-11-21 16:39:57,047 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1799032305] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:39:57,048 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:39:57,048 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-21 16:39:57,050 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [155130677] [2022-11-21 16:39:57,051 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:39:57,061 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-21 16:39:57,062 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:39:57,093 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-21 16:39:57,095 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-21 16:39:57,101 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 486 out of 516 [2022-11-21 16:39:57,107 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 463 places, 505 transitions, 1022 flow. Second operand has 2 states, 2 states have (on average 489.0) internal successors, (978), 2 states have internal predecessors, (978), 0 states have call successors, (0), 0 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 16:39:57,107 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 16:39:57,108 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 486 of 516 [2022-11-21 16:39:57,109 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 16:39:57,292 INFO L130 PetriNetUnfolder]: 24/480 cut-off events. [2022-11-21 16:39:57,293 INFO L131 PetriNetUnfolder]: For 9/10 co-relation queries the response was YES. [2022-11-21 16:39:57,299 INFO L83 FinitePrefix]: Finished finitePrefix Result has 494 conditions, 480 events. 24/480 cut-off events. For 9/10 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 1479 event pairs, 0 based on Foata normal form. 30/465 useless extension candidates. Maximal degree in co-relation 336. Up to 5 conditions per place. [2022-11-21 16:39:57,303 INFO L137 encePairwiseOnDemand]: 491/516 looper letters, 4 selfloop transitions, 0 changer transitions 5/480 dead transitions. [2022-11-21 16:39:57,303 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 464 places, 480 transitions, 980 flow [2022-11-21 16:39:57,304 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-21 16:39:57,307 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2022-11-21 16:39:57,324 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 1001 transitions. [2022-11-21 16:39:57,330 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9699612403100775 [2022-11-21 16:39:57,331 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 1001 transitions. [2022-11-21 16:39:57,332 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 1001 transitions. [2022-11-21 16:39:57,334 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 16:39:57,339 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 1001 transitions. [2022-11-21 16:39:57,346 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 500.5) internal successors, (1001), 2 states have internal predecessors, (1001), 0 states have call successors, (0), 0 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 16:39:57,362 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 516.0) internal successors, (1548), 3 states have internal predecessors, (1548), 0 states have call successors, (0), 0 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 16:39:57,364 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 516.0) internal successors, (1548), 3 states have internal predecessors, (1548), 0 states have call successors, (0), 0 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 16:39:57,366 INFO L175 Difference]: Start difference. First operand has 463 places, 505 transitions, 1022 flow. Second operand 2 states and 1001 transitions. [2022-11-21 16:39:57,368 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 464 places, 480 transitions, 980 flow [2022-11-21 16:39:57,378 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 460 places, 480 transitions, 972 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-11-21 16:39:57,392 INFO L231 Difference]: Finished difference. Result has 460 places, 475 transitions, 954 flow [2022-11-21 16:39:57,396 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=516, PETRI_DIFFERENCE_MINUEND_FLOW=964, PETRI_DIFFERENCE_MINUEND_PLACES=459, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=480, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=480, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=954, PETRI_PLACES=460, PETRI_TRANSITIONS=475} [2022-11-21 16:39:57,403 INFO L288 CegarLoopForPetriNet]: 463 programPoint places, -3 predicate places. [2022-11-21 16:39:57,404 INFO L495 AbstractCegarLoop]: Abstraction has has 460 places, 475 transitions, 954 flow [2022-11-21 16:39:57,405 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 489.0) internal successors, (978), 2 states have internal predecessors, (978), 0 states have call successors, (0), 0 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 16:39:57,405 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 16:39:57,406 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] [2022-11-21 16:39:57,407 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-21 16:39:57,407 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 16:39:57,408 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:39:57,409 INFO L85 PathProgramCache]: Analyzing trace with hash -641626322, now seen corresponding path program 1 times [2022-11-21 16:39:57,409 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:39:57,410 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1469345946] [2022-11-21 16:39:57,410 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:39:57,410 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:39:57,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:39:57,768 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 16:39:57,769 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:39:57,769 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1469345946] [2022-11-21 16:39:57,769 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1469345946] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:39:57,769 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:39:57,770 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-21 16:39:57,770 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [439417304] [2022-11-21 16:39:57,770 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:39:57,772 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-21 16:39:57,772 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:39:57,773 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-21 16:39:57,773 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-21 16:39:57,777 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 472 out of 516 [2022-11-21 16:39:57,779 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 460 places, 475 transitions, 954 flow. Second operand has 3 states, 3 states have (on average 475.3333333333333) internal successors, (1426), 3 states have internal predecessors, (1426), 0 states have call successors, (0), 0 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 16:39:57,780 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 16:39:57,780 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 472 of 516 [2022-11-21 16:39:57,780 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 16:39:58,305 INFO L130 PetriNetUnfolder]: 127/1661 cut-off events. [2022-11-21 16:39:58,305 INFO L131 PetriNetUnfolder]: For 19/21 co-relation queries the response was YES. [2022-11-21 16:39:58,314 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1800 conditions, 1661 events. 127/1661 cut-off events. For 19/21 co-relation queries the response was YES. Maximal size of possible extension queue 54. Compared 12674 event pairs, 36 based on Foata normal form. 1/1496 useless extension candidates. Maximal degree in co-relation 1797. Up to 88 conditions per place. [2022-11-21 16:39:58,321 INFO L137 encePairwiseOnDemand]: 512/516 looper letters, 29 selfloop transitions, 2 changer transitions 0/488 dead transitions. [2022-11-21 16:39:58,321 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 457 places, 488 transitions, 1045 flow [2022-11-21 16:39:58,322 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-21 16:39:58,322 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-21 16:39:58,326 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1449 transitions. [2022-11-21 16:39:58,328 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.936046511627907 [2022-11-21 16:39:58,329 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1449 transitions. [2022-11-21 16:39:58,329 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1449 transitions. [2022-11-21 16:39:58,331 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 16:39:58,331 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1449 transitions. [2022-11-21 16:39:58,337 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 483.0) internal successors, (1449), 3 states have internal predecessors, (1449), 0 states have call successors, (0), 0 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 16:39:58,342 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 516.0) internal successors, (2064), 4 states have internal predecessors, (2064), 0 states have call successors, (0), 0 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 16:39:58,344 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 516.0) internal successors, (2064), 4 states have internal predecessors, (2064), 0 states have call successors, (0), 0 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 16:39:58,344 INFO L175 Difference]: Start difference. First operand has 460 places, 475 transitions, 954 flow. Second operand 3 states and 1449 transitions. [2022-11-21 16:39:58,344 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 457 places, 488 transitions, 1045 flow [2022-11-21 16:39:58,349 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 457 places, 488 transitions, 1045 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-21 16:39:58,359 INFO L231 Difference]: Finished difference. Result has 459 places, 477 transitions, 974 flow [2022-11-21 16:39:58,360 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=516, PETRI_DIFFERENCE_MINUEND_FLOW=954, PETRI_DIFFERENCE_MINUEND_PLACES=455, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=475, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=473, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=974, PETRI_PLACES=459, PETRI_TRANSITIONS=477} [2022-11-21 16:39:58,361 INFO L288 CegarLoopForPetriNet]: 463 programPoint places, -4 predicate places. [2022-11-21 16:39:58,362 INFO L495 AbstractCegarLoop]: Abstraction has has 459 places, 477 transitions, 974 flow [2022-11-21 16:39:58,363 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 475.3333333333333) internal successors, (1426), 3 states have internal predecessors, (1426), 0 states have call successors, (0), 0 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 16:39:58,363 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 16:39:58,364 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] [2022-11-21 16:39:58,365 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-21 16:39:58,365 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 16:39:58,368 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:39:58,369 INFO L85 PathProgramCache]: Analyzing trace with hash 75998774, now seen corresponding path program 2 times [2022-11-21 16:39:58,369 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:39:58,370 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [123852719] [2022-11-21 16:39:58,370 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:39:58,372 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:39:58,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:39:58,583 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 16:39:58,583 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:39:58,584 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [123852719] [2022-11-21 16:39:58,584 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [123852719] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:39:58,584 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:39:58,584 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-21 16:39:58,585 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [660891491] [2022-11-21 16:39:58,585 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:39:58,586 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-21 16:39:58,586 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:39:58,587 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-21 16:39:58,587 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-21 16:39:58,590 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 472 out of 516 [2022-11-21 16:39:58,593 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 459 places, 477 transitions, 974 flow. Second operand has 3 states, 3 states have (on average 475.3333333333333) internal successors, (1426), 3 states have internal predecessors, (1426), 0 states have call successors, (0), 0 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 16:39:58,593 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 16:39:58,593 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 472 of 516 [2022-11-21 16:39:58,594 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 16:39:59,063 INFO L130 PetriNetUnfolder]: 120/1621 cut-off events. [2022-11-21 16:39:59,064 INFO L131 PetriNetUnfolder]: For 75/80 co-relation queries the response was YES. [2022-11-21 16:39:59,073 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1814 conditions, 1621 events. 120/1621 cut-off events. For 75/80 co-relation queries the response was YES. Maximal size of possible extension queue 51. Compared 12382 event pairs, 39 based on Foata normal form. 4/1497 useless extension candidates. Maximal degree in co-relation 1809. Up to 100 conditions per place. [2022-11-21 16:39:59,080 INFO L137 encePairwiseOnDemand]: 510/516 looper letters, 29 selfloop transitions, 4 changer transitions 0/490 dead transitions. [2022-11-21 16:39:59,081 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 461 places, 490 transitions, 1073 flow [2022-11-21 16:39:59,081 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-21 16:39:59,082 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-21 16:39:59,086 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1449 transitions. [2022-11-21 16:39:59,087 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.936046511627907 [2022-11-21 16:39:59,088 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1449 transitions. [2022-11-21 16:39:59,088 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1449 transitions. [2022-11-21 16:39:59,089 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 16:39:59,091 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1449 transitions. [2022-11-21 16:39:59,095 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 483.0) internal successors, (1449), 3 states have internal predecessors, (1449), 0 states have call successors, (0), 0 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 16:39:59,100 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 516.0) internal successors, (2064), 4 states have internal predecessors, (2064), 0 states have call successors, (0), 0 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 16:39:59,101 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 516.0) internal successors, (2064), 4 states have internal predecessors, (2064), 0 states have call successors, (0), 0 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 16:39:59,102 INFO L175 Difference]: Start difference. First operand has 459 places, 477 transitions, 974 flow. Second operand 3 states and 1449 transitions. [2022-11-21 16:39:59,102 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 461 places, 490 transitions, 1073 flow [2022-11-21 16:39:59,108 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 460 places, 490 transitions, 1071 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-21 16:39:59,115 INFO L231 Difference]: Finished difference. Result has 462 places, 479 transitions, 1004 flow [2022-11-21 16:39:59,116 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=516, PETRI_DIFFERENCE_MINUEND_FLOW=972, PETRI_DIFFERENCE_MINUEND_PLACES=458, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=477, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=473, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1004, PETRI_PLACES=462, PETRI_TRANSITIONS=479} [2022-11-21 16:39:59,118 INFO L288 CegarLoopForPetriNet]: 463 programPoint places, -1 predicate places. [2022-11-21 16:39:59,118 INFO L495 AbstractCegarLoop]: Abstraction has has 462 places, 479 transitions, 1004 flow [2022-11-21 16:39:59,119 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 475.3333333333333) internal successors, (1426), 3 states have internal predecessors, (1426), 0 states have call successors, (0), 0 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 16:39:59,120 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 16:39:59,120 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] [2022-11-21 16:39:59,120 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-21 16:39:59,120 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 16:39:59,121 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:39:59,121 INFO L85 PathProgramCache]: Analyzing trace with hash -1906119974, now seen corresponding path program 1 times [2022-11-21 16:39:59,122 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:39:59,123 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1907506709] [2022-11-21 16:39:59,123 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:39:59,123 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:39:59,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:39:59,334 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 16:39:59,336 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:39:59,336 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1907506709] [2022-11-21 16:39:59,337 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1907506709] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:39:59,337 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:39:59,338 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-21 16:39:59,338 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [900457280] [2022-11-21 16:39:59,338 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:39:59,340 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-21 16:39:59,340 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:39:59,342 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-21 16:39:59,342 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-21 16:39:59,347 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 464 out of 516 [2022-11-21 16:39:59,351 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 462 places, 479 transitions, 1004 flow. Second operand has 5 states, 5 states have (on average 467.6) internal successors, (2338), 5 states have internal predecessors, (2338), 0 states have call successors, (0), 0 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 16:39:59,352 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 16:39:59,352 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 464 of 516 [2022-11-21 16:39:59,352 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 16:39:59,626 INFO L130 PetriNetUnfolder]: 26/558 cut-off events. [2022-11-21 16:39:59,627 INFO L131 PetriNetUnfolder]: For 21/37 co-relation queries the response was YES. [2022-11-21 16:39:59,633 INFO L83 FinitePrefix]: Finished finitePrefix Result has 630 conditions, 558 events. 26/558 cut-off events. For 21/37 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 2130 event pairs, 0 based on Foata normal form. 0/519 useless extension candidates. Maximal degree in co-relation 624. Up to 31 conditions per place. [2022-11-21 16:39:59,635 INFO L137 encePairwiseOnDemand]: 506/516 looper letters, 26 selfloop transitions, 8 changer transitions 0/487 dead transitions. [2022-11-21 16:39:59,636 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 466 places, 487 transitions, 1088 flow [2022-11-21 16:39:59,636 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-21 16:39:59,636 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-21 16:39:59,640 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 2356 transitions. [2022-11-21 16:39:59,642 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9131782945736434 [2022-11-21 16:39:59,642 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 2356 transitions. [2022-11-21 16:39:59,642 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 2356 transitions. [2022-11-21 16:39:59,644 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 16:39:59,644 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 2356 transitions. [2022-11-21 16:39:59,651 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 471.2) internal successors, (2356), 5 states have internal predecessors, (2356), 0 states have call successors, (0), 0 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 16:39:59,658 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 516.0) internal successors, (3096), 6 states have internal predecessors, (3096), 0 states have call successors, (0), 0 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 16:39:59,661 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 516.0) internal successors, (3096), 6 states have internal predecessors, (3096), 0 states have call successors, (0), 0 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 16:39:59,661 INFO L175 Difference]: Start difference. First operand has 462 places, 479 transitions, 1004 flow. Second operand 5 states and 2356 transitions. [2022-11-21 16:39:59,661 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 466 places, 487 transitions, 1088 flow [2022-11-21 16:39:59,667 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 464 places, 487 transitions, 1076 flow, removed 2 selfloop flow, removed 2 redundant places. [2022-11-21 16:39:59,680 INFO L231 Difference]: Finished difference. Result has 465 places, 481 transitions, 1024 flow [2022-11-21 16:39:59,681 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=516, PETRI_DIFFERENCE_MINUEND_FLOW=992, PETRI_DIFFERENCE_MINUEND_PLACES=460, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=479, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=471, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1024, PETRI_PLACES=465, PETRI_TRANSITIONS=481} [2022-11-21 16:39:59,685 INFO L288 CegarLoopForPetriNet]: 463 programPoint places, 2 predicate places. [2022-11-21 16:39:59,685 INFO L495 AbstractCegarLoop]: Abstraction has has 465 places, 481 transitions, 1024 flow [2022-11-21 16:39:59,687 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 467.6) internal successors, (2338), 5 states have internal predecessors, (2338), 0 states have call successors, (0), 0 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 16:39:59,693 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 16:39:59,694 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] [2022-11-21 16:39:59,694 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-21 16:39:59,694 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 16:39:59,695 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:39:59,695 INFO L85 PathProgramCache]: Analyzing trace with hash -106984300, now seen corresponding path program 1 times [2022-11-21 16:39:59,696 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:39:59,697 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [605575500] [2022-11-21 16:39:59,697 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:39:59,697 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:39:59,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:40:00,027 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-21 16:40:00,028 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:40:00,028 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [605575500] [2022-11-21 16:40:00,028 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [605575500] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-21 16:40:00,028 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1341024953] [2022-11-21 16:40:00,029 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:40:00,029 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 16:40:00,029 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_080535e5-0f83-4092-b5ba-305e5515349f/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 16:40:00,035 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_080535e5-0f83-4092-b5ba-305e5515349f/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-21 16:40:00,040 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_080535e5-0f83-4092-b5ba-305e5515349f/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-21 16:40:00,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:40:00,222 INFO L263 TraceCheckSpWp]: Trace formula consists of 380 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-21 16:40:00,231 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 16:40:00,406 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-21 16:40:00,407 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-21 16:40:00,530 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-21 16:40:00,531 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1341024953] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-21 16:40:00,531 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-21 16:40:00,532 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 15 [2022-11-21 16:40:00,532 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [590570377] [2022-11-21 16:40:00,532 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-21 16:40:00,533 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-11-21 16:40:00,533 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:40:00,534 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-11-21 16:40:00,534 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=153, Unknown=0, NotChecked=0, Total=210 [2022-11-21 16:40:00,547 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 462 out of 516 [2022-11-21 16:40:00,558 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 465 places, 481 transitions, 1024 flow. Second operand has 15 states, 15 states have (on average 465.1333333333333) internal successors, (6977), 15 states have internal predecessors, (6977), 0 states have call successors, (0), 0 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 16:40:00,559 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 16:40:00,559 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 462 of 516 [2022-11-21 16:40:00,559 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 16:40:01,022 INFO L130 PetriNetUnfolder]: 26/574 cut-off events. [2022-11-21 16:40:01,023 INFO L131 PetriNetUnfolder]: For 22/37 co-relation queries the response was YES. [2022-11-21 16:40:01,033 INFO L83 FinitePrefix]: Finished finitePrefix Result has 673 conditions, 574 events. 26/574 cut-off events. For 22/37 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 2116 event pairs, 0 based on Foata normal form. 4/541 useless extension candidates. Maximal degree in co-relation 666. Up to 25 conditions per place. [2022-11-21 16:40:01,036 INFO L137 encePairwiseOnDemand]: 500/516 looper letters, 28 selfloop transitions, 22 changer transitions 0/501 dead transitions. [2022-11-21 16:40:01,036 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 475 places, 501 transitions, 1168 flow [2022-11-21 16:40:01,037 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-21 16:40:01,037 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2022-11-21 16:40:01,045 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 5136 transitions. [2022-11-21 16:40:01,048 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.904862579281184 [2022-11-21 16:40:01,049 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 5136 transitions. [2022-11-21 16:40:01,049 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 5136 transitions. [2022-11-21 16:40:01,052 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 16:40:01,053 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 5136 transitions. [2022-11-21 16:40:01,066 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 466.90909090909093) internal successors, (5136), 11 states have internal predecessors, (5136), 0 states have call successors, (0), 0 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 16:40:01,078 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 516.0) internal successors, (6192), 12 states have internal predecessors, (6192), 0 states have call successors, (0), 0 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 16:40:01,082 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 516.0) internal successors, (6192), 12 states have internal predecessors, (6192), 0 states have call successors, (0), 0 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 16:40:01,082 INFO L175 Difference]: Start difference. First operand has 465 places, 481 transitions, 1024 flow. Second operand 11 states and 5136 transitions. [2022-11-21 16:40:01,082 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 475 places, 501 transitions, 1168 flow [2022-11-21 16:40:01,087 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 472 places, 501 transitions, 1156 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-11-21 16:40:01,095 INFO L231 Difference]: Finished difference. Result has 475 places, 493 transitions, 1123 flow [2022-11-21 16:40:01,096 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=516, PETRI_DIFFERENCE_MINUEND_FLOW=1012, PETRI_DIFFERENCE_MINUEND_PLACES=462, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=481, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=465, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1123, PETRI_PLACES=475, PETRI_TRANSITIONS=493} [2022-11-21 16:40:01,097 INFO L288 CegarLoopForPetriNet]: 463 programPoint places, 12 predicate places. [2022-11-21 16:40:01,097 INFO L495 AbstractCegarLoop]: Abstraction has has 475 places, 493 transitions, 1123 flow [2022-11-21 16:40:01,101 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 465.1333333333333) internal successors, (6977), 15 states have internal predecessors, (6977), 0 states have call successors, (0), 0 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 16:40:01,101 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 16:40:01,102 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:40:01,120 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_080535e5-0f83-4092-b5ba-305e5515349f/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-11-21 16:40:01,310 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_080535e5-0f83-4092-b5ba-305e5515349f/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 16:40:01,310 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 16:40:01,311 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:40:01,311 INFO L85 PathProgramCache]: Analyzing trace with hash -380475884, now seen corresponding path program 2 times [2022-11-21 16:40:01,311 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:40:01,311 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1670332366] [2022-11-21 16:40:01,311 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:40:01,311 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:40:01,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:40:01,794 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2022-11-21 16:40:01,794 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:40:01,795 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1670332366] [2022-11-21 16:40:01,795 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1670332366] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-21 16:40:01,795 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [517881602] [2022-11-21 16:40:01,796 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-21 16:40:01,796 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 16:40:01,796 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_080535e5-0f83-4092-b5ba-305e5515349f/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 16:40:01,798 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_080535e5-0f83-4092-b5ba-305e5515349f/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-21 16:40:01,810 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_080535e5-0f83-4092-b5ba-305e5515349f/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-21 16:40:02,006 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-11-21 16:40:02,006 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-21 16:40:02,008 INFO L263 TraceCheckSpWp]: Trace formula consists of 358 conjuncts, 10 conjunts are in the unsatisfiable core [2022-11-21 16:40:02,025 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 16:40:02,322 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2022-11-21 16:40:02,323 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-21 16:40:02,323 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [517881602] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:40:02,323 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-21 16:40:02,323 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [11] total 18 [2022-11-21 16:40:02,324 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [822785659] [2022-11-21 16:40:02,324 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:40:02,329 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-21 16:40:02,330 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:40:02,330 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-21 16:40:02,331 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=259, Unknown=0, NotChecked=0, Total=306 [2022-11-21 16:40:02,339 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 436 out of 516 [2022-11-21 16:40:02,353 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 475 places, 493 transitions, 1123 flow. Second operand has 9 states, 9 states have (on average 440.0) internal successors, (3960), 9 states have internal predecessors, (3960), 0 states have call successors, (0), 0 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 16:40:02,353 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 16:40:02,354 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 436 of 516 [2022-11-21 16:40:02,354 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 16:40:03,323 INFO L130 PetriNetUnfolder]: 383/2430 cut-off events. [2022-11-21 16:40:03,323 INFO L131 PetriNetUnfolder]: For 77/83 co-relation queries the response was YES. [2022-11-21 16:40:03,337 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3194 conditions, 2430 events. 383/2430 cut-off events. For 77/83 co-relation queries the response was YES. Maximal size of possible extension queue 88. Compared 20272 event pairs, 211 based on Foata normal form. 1/2189 useless extension candidates. Maximal degree in co-relation 3184. Up to 507 conditions per place. [2022-11-21 16:40:03,347 INFO L137 encePairwiseOnDemand]: 505/516 looper letters, 88 selfloop transitions, 3 changer transitions 24/559 dead transitions. [2022-11-21 16:40:03,347 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 491 places, 559 transitions, 1496 flow [2022-11-21 16:40:03,348 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-11-21 16:40:03,348 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2022-11-21 16:40:03,360 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 7528 transitions. [2022-11-21 16:40:03,364 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8581851345189239 [2022-11-21 16:40:03,365 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 7528 transitions. [2022-11-21 16:40:03,365 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 7528 transitions. [2022-11-21 16:40:03,370 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 16:40:03,370 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 7528 transitions. [2022-11-21 16:40:03,388 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 442.8235294117647) internal successors, (7528), 17 states have internal predecessors, (7528), 0 states have call successors, (0), 0 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 16:40:03,404 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 516.0) internal successors, (9288), 18 states have internal predecessors, (9288), 0 states have call successors, (0), 0 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 16:40:03,408 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 516.0) internal successors, (9288), 18 states have internal predecessors, (9288), 0 states have call successors, (0), 0 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 16:40:03,408 INFO L175 Difference]: Start difference. First operand has 475 places, 493 transitions, 1123 flow. Second operand 17 states and 7528 transitions. [2022-11-21 16:40:03,409 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 491 places, 559 transitions, 1496 flow [2022-11-21 16:40:03,414 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 488 places, 559 transitions, 1479 flow, removed 4 selfloop flow, removed 3 redundant places. [2022-11-21 16:40:03,421 INFO L231 Difference]: Finished difference. Result has 503 places, 495 transitions, 1161 flow [2022-11-21 16:40:03,422 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=516, PETRI_DIFFERENCE_MINUEND_FLOW=1106, PETRI_DIFFERENCE_MINUEND_PLACES=472, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=493, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=490, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=1161, PETRI_PLACES=503, PETRI_TRANSITIONS=495} [2022-11-21 16:40:03,423 INFO L288 CegarLoopForPetriNet]: 463 programPoint places, 40 predicate places. [2022-11-21 16:40:03,423 INFO L495 AbstractCegarLoop]: Abstraction has has 503 places, 495 transitions, 1161 flow [2022-11-21 16:40:03,425 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 440.0) internal successors, (3960), 9 states have internal predecessors, (3960), 0 states have call successors, (0), 0 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 16:40:03,425 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 16:40:03,426 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:40:03,441 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_080535e5-0f83-4092-b5ba-305e5515349f/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-21 16:40:03,632 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_080535e5-0f83-4092-b5ba-305e5515349f/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 16:40:03,633 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 16:40:03,633 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:40:03,634 INFO L85 PathProgramCache]: Analyzing trace with hash -71566138, now seen corresponding path program 3 times [2022-11-21 16:40:03,634 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:40:03,634 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1292202781] [2022-11-21 16:40:03,634 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:40:03,635 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:40:03,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:40:03,990 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2022-11-21 16:40:03,990 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:40:03,991 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1292202781] [2022-11-21 16:40:03,991 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1292202781] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-21 16:40:03,991 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [686536147] [2022-11-21 16:40:03,991 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-21 16:40:03,991 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 16:40:03,992 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_080535e5-0f83-4092-b5ba-305e5515349f/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 16:40:03,993 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_080535e5-0f83-4092-b5ba-305e5515349f/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-21 16:40:04,007 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_080535e5-0f83-4092-b5ba-305e5515349f/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-21 16:40:04,168 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2022-11-21 16:40:04,169 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-21 16:40:04,171 INFO L263 TraceCheckSpWp]: Trace formula consists of 358 conjuncts, 10 conjunts are in the unsatisfiable core [2022-11-21 16:40:04,175 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 16:40:04,381 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2022-11-21 16:40:04,382 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-21 16:40:04,382 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [686536147] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:40:04,382 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-21 16:40:04,382 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [11] total 18 [2022-11-21 16:40:04,383 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [444127074] [2022-11-21 16:40:04,383 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:40:04,383 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-21 16:40:04,384 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:40:04,384 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-21 16:40:04,384 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=260, Unknown=0, NotChecked=0, Total=306 [2022-11-21 16:40:04,390 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 436 out of 516 [2022-11-21 16:40:04,394 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 503 places, 495 transitions, 1161 flow. Second operand has 9 states, 9 states have (on average 440.0) internal successors, (3960), 9 states have internal predecessors, (3960), 0 states have call successors, (0), 0 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 16:40:04,394 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 16:40:04,394 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 436 of 516 [2022-11-21 16:40:04,395 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 16:40:05,328 INFO L130 PetriNetUnfolder]: 390/2492 cut-off events. [2022-11-21 16:40:05,328 INFO L131 PetriNetUnfolder]: For 929/942 co-relation queries the response was YES. [2022-11-21 16:40:05,348 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3950 conditions, 2492 events. 390/2492 cut-off events. For 929/942 co-relation queries the response was YES. Maximal size of possible extension queue 95. Compared 20925 event pairs, 204 based on Foata normal form. 1/2244 useless extension candidates. Maximal degree in co-relation 3925. Up to 497 conditions per place. [2022-11-21 16:40:05,359 INFO L137 encePairwiseOnDemand]: 505/516 looper letters, 112 selfloop transitions, 5 changer transitions 22/583 dead transitions. [2022-11-21 16:40:05,359 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 508 places, 583 transitions, 1824 flow [2022-11-21 16:40:05,360 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-11-21 16:40:05,360 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-11-21 16:40:05,431 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 7976 transitions. [2022-11-21 16:40:05,435 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8587424633936261 [2022-11-21 16:40:05,435 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 7976 transitions. [2022-11-21 16:40:05,435 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 7976 transitions. [2022-11-21 16:40:05,441 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 16:40:05,441 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 7976 transitions. [2022-11-21 16:40:05,473 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 443.1111111111111) internal successors, (7976), 18 states have internal predecessors, (7976), 0 states have call successors, (0), 0 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 16:40:05,490 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 516.0) internal successors, (9804), 19 states have internal predecessors, (9804), 0 states have call successors, (0), 0 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 16:40:05,494 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 516.0) internal successors, (9804), 19 states have internal predecessors, (9804), 0 states have call successors, (0), 0 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 16:40:05,494 INFO L175 Difference]: Start difference. First operand has 503 places, 495 transitions, 1161 flow. Second operand 18 states and 7976 transitions. [2022-11-21 16:40:05,494 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 508 places, 583 transitions, 1824 flow [2022-11-21 16:40:05,507 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 499 places, 583 transitions, 1762 flow, removed 28 selfloop flow, removed 9 redundant places. [2022-11-21 16:40:05,520 INFO L231 Difference]: Finished difference. Result has 515 places, 499 transitions, 1223 flow [2022-11-21 16:40:05,521 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=516, PETRI_DIFFERENCE_MINUEND_FLOW=1144, PETRI_DIFFERENCE_MINUEND_PLACES=482, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=495, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=490, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=1223, PETRI_PLACES=515, PETRI_TRANSITIONS=499} [2022-11-21 16:40:05,522 INFO L288 CegarLoopForPetriNet]: 463 programPoint places, 52 predicate places. [2022-11-21 16:40:05,522 INFO L495 AbstractCegarLoop]: Abstraction has has 515 places, 499 transitions, 1223 flow [2022-11-21 16:40:05,523 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 440.0) internal successors, (3960), 9 states have internal predecessors, (3960), 0 states have call successors, (0), 0 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 16:40:05,524 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 16:40:05,524 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:40:05,536 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_080535e5-0f83-4092-b5ba-305e5515349f/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-21 16:40:05,736 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_080535e5-0f83-4092-b5ba-305e5515349f/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2022-11-21 16:40:05,737 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 16:40:05,737 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:40:05,738 INFO L85 PathProgramCache]: Analyzing trace with hash -2081368742, now seen corresponding path program 4 times [2022-11-21 16:40:05,738 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:40:05,738 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [310534232] [2022-11-21 16:40:05,738 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:40:05,738 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:40:05,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:40:06,250 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2022-11-21 16:40:06,250 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:40:06,251 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [310534232] [2022-11-21 16:40:06,251 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [310534232] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-21 16:40:06,251 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1913305073] [2022-11-21 16:40:06,252 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-21 16:40:06,252 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 16:40:06,252 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_080535e5-0f83-4092-b5ba-305e5515349f/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 16:40:06,255 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_080535e5-0f83-4092-b5ba-305e5515349f/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-21 16:40:06,264 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_080535e5-0f83-4092-b5ba-305e5515349f/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-21 16:40:06,444 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-21 16:40:06,445 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-21 16:40:06,447 INFO L263 TraceCheckSpWp]: Trace formula consists of 349 conjuncts, 10 conjunts are in the unsatisfiable core [2022-11-21 16:40:06,451 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 16:40:06,720 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2022-11-21 16:40:06,720 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-21 16:40:06,937 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2022-11-21 16:40:06,937 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1913305073] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-21 16:40:06,937 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-21 16:40:06,938 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 22 [2022-11-21 16:40:06,938 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2138768152] [2022-11-21 16:40:06,938 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-21 16:40:06,939 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-11-21 16:40:06,939 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:40:06,940 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-11-21 16:40:06,940 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=114, Invalid=348, Unknown=0, NotChecked=0, Total=462 [2022-11-21 16:40:06,950 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 462 out of 516 [2022-11-21 16:40:06,960 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 515 places, 499 transitions, 1223 flow. Second operand has 22 states, 22 states have (on average 465.04545454545456) internal successors, (10231), 22 states have internal predecessors, (10231), 0 states have call successors, (0), 0 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 16:40:06,960 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 16:40:06,960 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 462 of 516 [2022-11-21 16:40:06,960 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 16:40:07,597 INFO L130 PetriNetUnfolder]: 53/723 cut-off events. [2022-11-21 16:40:07,598 INFO L131 PetriNetUnfolder]: For 558/618 co-relation queries the response was YES. [2022-11-21 16:40:07,610 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1258 conditions, 723 events. 53/723 cut-off events. For 558/618 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 3227 event pairs, 19 based on Foata normal form. 7/674 useless extension candidates. Maximal degree in co-relation 1225. Up to 34 conditions per place. [2022-11-21 16:40:07,617 INFO L137 encePairwiseOnDemand]: 500/516 looper letters, 36 selfloop transitions, 34 changer transitions 0/527 dead transitions. [2022-11-21 16:40:07,617 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 520 places, 527 transitions, 1475 flow [2022-11-21 16:40:07,618 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-11-21 16:40:07,618 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2022-11-21 16:40:07,630 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 7928 transitions. [2022-11-21 16:40:07,635 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9037847697218422 [2022-11-21 16:40:07,635 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 7928 transitions. [2022-11-21 16:40:07,635 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 7928 transitions. [2022-11-21 16:40:07,641 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 16:40:07,701 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 7928 transitions. [2022-11-21 16:40:07,719 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 466.3529411764706) internal successors, (7928), 17 states have internal predecessors, (7928), 0 states have call successors, (0), 0 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 16:40:07,738 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 516.0) internal successors, (9288), 18 states have internal predecessors, (9288), 0 states have call successors, (0), 0 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 16:40:07,742 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 516.0) internal successors, (9288), 18 states have internal predecessors, (9288), 0 states have call successors, (0), 0 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 16:40:07,742 INFO L175 Difference]: Start difference. First operand has 515 places, 499 transitions, 1223 flow. Second operand 17 states and 7928 transitions. [2022-11-21 16:40:07,742 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 520 places, 527 transitions, 1475 flow [2022-11-21 16:40:07,749 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 512 places, 527 transitions, 1460 flow, removed 7 selfloop flow, removed 8 redundant places. [2022-11-21 16:40:07,757 INFO L231 Difference]: Finished difference. Result has 515 places, 513 transitions, 1383 flow [2022-11-21 16:40:07,758 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=516, PETRI_DIFFERENCE_MINUEND_FLOW=1208, PETRI_DIFFERENCE_MINUEND_PLACES=496, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=499, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=473, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=1383, PETRI_PLACES=515, PETRI_TRANSITIONS=513} [2022-11-21 16:40:07,762 INFO L288 CegarLoopForPetriNet]: 463 programPoint places, 52 predicate places. [2022-11-21 16:40:07,763 INFO L495 AbstractCegarLoop]: Abstraction has has 515 places, 513 transitions, 1383 flow [2022-11-21 16:40:07,766 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 465.04545454545456) internal successors, (10231), 22 states have internal predecessors, (10231), 0 states have call successors, (0), 0 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 16:40:07,766 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 16:40:07,766 INFO L209 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:40:07,775 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_080535e5-0f83-4092-b5ba-305e5515349f/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-21 16:40:07,973 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_080535e5-0f83-4092-b5ba-305e5515349f/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 16:40:07,975 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 16:40:07,975 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:40:07,976 INFO L85 PathProgramCache]: Analyzing trace with hash 394511208, now seen corresponding path program 5 times [2022-11-21 16:40:07,976 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:40:07,976 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [168893198] [2022-11-21 16:40:07,976 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:40:07,976 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:40:08,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:40:08,674 INFO L134 CoverageAnalysis]: Checked inductivity of 130 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 130 trivial. 0 not checked. [2022-11-21 16:40:08,675 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:40:08,675 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [168893198] [2022-11-21 16:40:08,675 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [168893198] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:40:08,675 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:40:08,675 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-11-21 16:40:08,676 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [998014833] [2022-11-21 16:40:08,676 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:40:08,676 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-21 16:40:08,676 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:40:08,677 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-21 16:40:08,677 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2022-11-21 16:40:08,681 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 436 out of 516 [2022-11-21 16:40:08,686 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 515 places, 513 transitions, 1383 flow. Second operand has 9 states, 9 states have (on average 440.0) internal successors, (3960), 9 states have internal predecessors, (3960), 0 states have call successors, (0), 0 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 16:40:08,686 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 16:40:08,686 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 436 of 516 [2022-11-21 16:40:08,686 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 16:40:09,858 INFO L130 PetriNetUnfolder]: 407/2649 cut-off events. [2022-11-21 16:40:09,858 INFO L131 PetriNetUnfolder]: For 1541/1551 co-relation queries the response was YES. [2022-11-21 16:40:09,883 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4547 conditions, 2649 events. 407/2649 cut-off events. For 1541/1551 co-relation queries the response was YES. Maximal size of possible extension queue 96. Compared 22506 event pairs, 229 based on Foata normal form. 1/2377 useless extension candidates. Maximal degree in co-relation 4518. Up to 581 conditions per place. [2022-11-21 16:40:09,894 INFO L137 encePairwiseOnDemand]: 505/516 looper letters, 76 selfloop transitions, 8 changer transitions 20/562 dead transitions. [2022-11-21 16:40:09,895 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 530 places, 562 transitions, 1906 flow [2022-11-21 16:40:09,895 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-11-21 16:40:09,896 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2022-11-21 16:40:09,910 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 7073 transitions. [2022-11-21 16:40:09,915 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8567102713178295 [2022-11-21 16:40:09,916 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 7073 transitions. [2022-11-21 16:40:09,916 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 7073 transitions. [2022-11-21 16:40:09,920 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 16:40:09,921 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 7073 transitions. [2022-11-21 16:40:09,940 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 442.0625) internal successors, (7073), 16 states have internal predecessors, (7073), 0 states have call successors, (0), 0 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 16:40:09,956 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 516.0) internal successors, (8772), 17 states have internal predecessors, (8772), 0 states have call successors, (0), 0 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 16:40:09,960 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 516.0) internal successors, (8772), 17 states have internal predecessors, (8772), 0 states have call successors, (0), 0 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 16:40:09,960 INFO L175 Difference]: Start difference. First operand has 515 places, 513 transitions, 1383 flow. Second operand 16 states and 7073 transitions. [2022-11-21 16:40:09,960 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 530 places, 562 transitions, 1906 flow [2022-11-21 16:40:09,978 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 522 places, 562 transitions, 1861 flow, removed 8 selfloop flow, removed 8 redundant places. [2022-11-21 16:40:09,990 INFO L231 Difference]: Finished difference. Result has 533 places, 520 transitions, 1453 flow [2022-11-21 16:40:09,991 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=516, PETRI_DIFFERENCE_MINUEND_FLOW=1338, PETRI_DIFFERENCE_MINUEND_PLACES=507, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=513, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=508, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=1453, PETRI_PLACES=533, PETRI_TRANSITIONS=520} [2022-11-21 16:40:09,993 INFO L288 CegarLoopForPetriNet]: 463 programPoint places, 70 predicate places. [2022-11-21 16:40:09,994 INFO L495 AbstractCegarLoop]: Abstraction has has 533 places, 520 transitions, 1453 flow [2022-11-21 16:40:09,995 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 440.0) internal successors, (3960), 9 states have internal predecessors, (3960), 0 states have call successors, (0), 0 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 16:40:09,995 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 16:40:09,996 INFO L209 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:40:09,996 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-21 16:40:09,997 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 16:40:09,997 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:40:09,997 INFO L85 PathProgramCache]: Analyzing trace with hash -1011809988, now seen corresponding path program 6 times [2022-11-21 16:40:09,998 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:40:09,998 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1975875621] [2022-11-21 16:40:09,998 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:40:09,998 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:40:10,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:40:10,665 INFO L134 CoverageAnalysis]: Checked inductivity of 130 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 130 trivial. 0 not checked. [2022-11-21 16:40:10,666 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:40:10,666 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1975875621] [2022-11-21 16:40:10,666 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1975875621] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:40:10,666 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:40:10,667 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-11-21 16:40:10,667 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2089936123] [2022-11-21 16:40:10,667 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:40:10,668 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-21 16:40:10,668 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:40:10,669 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-21 16:40:10,669 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2022-11-21 16:40:10,674 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 436 out of 516 [2022-11-21 16:40:10,678 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 533 places, 520 transitions, 1453 flow. Second operand has 9 states, 9 states have (on average 440.0) internal successors, (3960), 9 states have internal predecessors, (3960), 0 states have call successors, (0), 0 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 16:40:10,679 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 16:40:10,679 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 436 of 516 [2022-11-21 16:40:10,679 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 16:40:11,840 INFO L130 PetriNetUnfolder]: 419/2770 cut-off events. [2022-11-21 16:40:11,841 INFO L131 PetriNetUnfolder]: For 2469/2488 co-relation queries the response was YES. [2022-11-21 16:40:11,862 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4916 conditions, 2770 events. 419/2770 cut-off events. For 2469/2488 co-relation queries the response was YES. Maximal size of possible extension queue 93. Compared 23420 event pairs, 231 based on Foata normal form. 2/2479 useless extension candidates. Maximal degree in co-relation 4876. Up to 540 conditions per place. [2022-11-21 16:40:11,872 INFO L137 encePairwiseOnDemand]: 505/516 looper letters, 72 selfloop transitions, 12 changer transitions 20/562 dead transitions. [2022-11-21 16:40:11,872 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 537 places, 562 transitions, 2006 flow [2022-11-21 16:40:11,872 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-21 16:40:11,873 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2022-11-21 16:40:11,883 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 6637 transitions. [2022-11-21 16:40:11,887 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8574935400516795 [2022-11-21 16:40:11,887 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 6637 transitions. [2022-11-21 16:40:11,888 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 6637 transitions. [2022-11-21 16:40:11,891 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 16:40:11,891 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 6637 transitions. [2022-11-21 16:40:11,903 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 442.46666666666664) internal successors, (6637), 15 states have internal predecessors, (6637), 0 states have call successors, (0), 0 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 16:40:11,919 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 516.0) internal successors, (8256), 16 states have internal predecessors, (8256), 0 states have call successors, (0), 0 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 16:40:11,922 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 516.0) internal successors, (8256), 16 states have internal predecessors, (8256), 0 states have call successors, (0), 0 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 16:40:11,923 INFO L175 Difference]: Start difference. First operand has 533 places, 520 transitions, 1453 flow. Second operand 15 states and 6637 transitions. [2022-11-21 16:40:11,923 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 537 places, 562 transitions, 2006 flow [2022-11-21 16:40:11,943 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 530 places, 562 transitions, 1932 flow, removed 37 selfloop flow, removed 7 redundant places. [2022-11-21 16:40:11,951 INFO L231 Difference]: Finished difference. Result has 542 places, 525 transitions, 1550 flow [2022-11-21 16:40:11,953 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=516, PETRI_DIFFERENCE_MINUEND_FLOW=1423, PETRI_DIFFERENCE_MINUEND_PLACES=516, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=520, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=510, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=1550, PETRI_PLACES=542, PETRI_TRANSITIONS=525} [2022-11-21 16:40:11,954 INFO L288 CegarLoopForPetriNet]: 463 programPoint places, 79 predicate places. [2022-11-21 16:40:11,954 INFO L495 AbstractCegarLoop]: Abstraction has has 542 places, 525 transitions, 1550 flow [2022-11-21 16:40:11,956 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 440.0) internal successors, (3960), 9 states have internal predecessors, (3960), 0 states have call successors, (0), 0 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 16:40:11,956 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 16:40:11,957 INFO L209 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:40:11,957 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-21 16:40:11,957 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 16:40:11,958 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:40:11,958 INFO L85 PathProgramCache]: Analyzing trace with hash 347976736, now seen corresponding path program 7 times [2022-11-21 16:40:11,958 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:40:11,958 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1255199547] [2022-11-21 16:40:11,959 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:40:11,959 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:40:12,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:40:12,595 INFO L134 CoverageAnalysis]: Checked inductivity of 130 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 130 trivial. 0 not checked. [2022-11-21 16:40:12,596 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:40:12,596 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1255199547] [2022-11-21 16:40:12,596 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1255199547] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:40:12,596 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:40:12,597 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-11-21 16:40:12,597 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1970862714] [2022-11-21 16:40:12,597 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:40:12,598 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-21 16:40:12,598 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:40:12,599 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-21 16:40:12,599 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2022-11-21 16:40:12,603 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 436 out of 516 [2022-11-21 16:40:12,607 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 542 places, 525 transitions, 1550 flow. Second operand has 9 states, 9 states have (on average 440.0) internal successors, (3960), 9 states have internal predecessors, (3960), 0 states have call successors, (0), 0 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 16:40:12,608 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 16:40:12,608 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 436 of 516 [2022-11-21 16:40:12,608 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 16:40:13,786 INFO L130 PetriNetUnfolder]: 390/2546 cut-off events. [2022-11-21 16:40:13,787 INFO L131 PetriNetUnfolder]: For 3065/3086 co-relation queries the response was YES. [2022-11-21 16:40:13,819 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4820 conditions, 2546 events. 390/2546 cut-off events. For 3065/3086 co-relation queries the response was YES. Maximal size of possible extension queue 96. Compared 21486 event pairs, 234 based on Foata normal form. 3/2291 useless extension candidates. Maximal degree in co-relation 4774. Up to 592 conditions per place. [2022-11-21 16:40:13,829 INFO L137 encePairwiseOnDemand]: 505/516 looper letters, 73 selfloop transitions, 13 changer transitions 18/562 dead transitions. [2022-11-21 16:40:13,829 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 546 places, 562 transitions, 2086 flow [2022-11-21 16:40:13,830 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-21 16:40:13,830 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2022-11-21 16:40:13,836 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 6194 transitions. [2022-11-21 16:40:13,839 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8574197120708749 [2022-11-21 16:40:13,840 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 6194 transitions. [2022-11-21 16:40:13,840 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 6194 transitions. [2022-11-21 16:40:13,843 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 16:40:13,843 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 6194 transitions. [2022-11-21 16:40:13,854 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 442.42857142857144) internal successors, (6194), 14 states have internal predecessors, (6194), 0 states have call successors, (0), 0 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 16:40:13,865 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 516.0) internal successors, (7740), 15 states have internal predecessors, (7740), 0 states have call successors, (0), 0 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 16:40:13,868 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 516.0) internal successors, (7740), 15 states have internal predecessors, (7740), 0 states have call successors, (0), 0 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 16:40:13,869 INFO L175 Difference]: Start difference. First operand has 542 places, 525 transitions, 1550 flow. Second operand 14 states and 6194 transitions. [2022-11-21 16:40:13,869 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 546 places, 562 transitions, 2086 flow [2022-11-21 16:40:13,907 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 539 places, 562 transitions, 2003 flow, removed 36 selfloop flow, removed 7 redundant places. [2022-11-21 16:40:13,915 INFO L231 Difference]: Finished difference. Result has 548 places, 530 transitions, 1619 flow [2022-11-21 16:40:13,916 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=516, PETRI_DIFFERENCE_MINUEND_FLOW=1501, PETRI_DIFFERENCE_MINUEND_PLACES=526, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=525, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=515, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=1619, PETRI_PLACES=548, PETRI_TRANSITIONS=530} [2022-11-21 16:40:13,917 INFO L288 CegarLoopForPetriNet]: 463 programPoint places, 85 predicate places. [2022-11-21 16:40:13,917 INFO L495 AbstractCegarLoop]: Abstraction has has 548 places, 530 transitions, 1619 flow [2022-11-21 16:40:13,918 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 440.0) internal successors, (3960), 9 states have internal predecessors, (3960), 0 states have call successors, (0), 0 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 16:40:13,919 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 16:40:13,919 INFO L209 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:40:13,919 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-21 16:40:13,920 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 16:40:13,920 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:40:13,920 INFO L85 PathProgramCache]: Analyzing trace with hash 355710436, now seen corresponding path program 8 times [2022-11-21 16:40:13,921 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:40:13,921 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1438716660] [2022-11-21 16:40:13,921 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:40:13,921 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:40:13,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:40:14,599 INFO L134 CoverageAnalysis]: Checked inductivity of 130 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 130 trivial. 0 not checked. [2022-11-21 16:40:14,599 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:40:14,600 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1438716660] [2022-11-21 16:40:14,600 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1438716660] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:40:14,600 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:40:14,600 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-11-21 16:40:14,603 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1805344021] [2022-11-21 16:40:14,603 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:40:14,605 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-21 16:40:14,605 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:40:14,605 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-21 16:40:14,606 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2022-11-21 16:40:14,612 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 436 out of 516 [2022-11-21 16:40:14,618 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 548 places, 530 transitions, 1619 flow. Second operand has 9 states, 9 states have (on average 440.0) internal successors, (3960), 9 states have internal predecessors, (3960), 0 states have call successors, (0), 0 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 16:40:14,618 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 16:40:14,618 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 436 of 516 [2022-11-21 16:40:14,619 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 16:40:15,974 INFO L130 PetriNetUnfolder]: 383/2517 cut-off events. [2022-11-21 16:40:15,974 INFO L131 PetriNetUnfolder]: For 2940/2960 co-relation queries the response was YES. [2022-11-21 16:40:16,012 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4696 conditions, 2517 events. 383/2517 cut-off events. For 2940/2960 co-relation queries the response was YES. Maximal size of possible extension queue 96. Compared 21256 event pairs, 231 based on Foata normal form. 3/2265 useless extension candidates. Maximal degree in co-relation 4647. Up to 577 conditions per place. [2022-11-21 16:40:16,022 INFO L137 encePairwiseOnDemand]: 505/516 looper letters, 71 selfloop transitions, 4 changer transitions 23/556 dead transitions. [2022-11-21 16:40:16,023 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 555 places, 556 transitions, 1984 flow [2022-11-21 16:40:16,023 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-21 16:40:16,023 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2022-11-21 16:40:16,032 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 6190 transitions. [2022-11-21 16:40:16,038 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8568660022148394 [2022-11-21 16:40:16,038 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 6190 transitions. [2022-11-21 16:40:16,038 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 6190 transitions. [2022-11-21 16:40:16,044 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 16:40:16,045 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 6190 transitions. [2022-11-21 16:40:16,071 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 442.14285714285717) internal successors, (6190), 14 states have internal predecessors, (6190), 0 states have call successors, (0), 0 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 16:40:16,082 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 516.0) internal successors, (7740), 15 states have internal predecessors, (7740), 0 states have call successors, (0), 0 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 16:40:16,085 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 516.0) internal successors, (7740), 15 states have internal predecessors, (7740), 0 states have call successors, (0), 0 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 16:40:16,085 INFO L175 Difference]: Start difference. First operand has 548 places, 530 transitions, 1619 flow. Second operand 14 states and 6190 transitions. [2022-11-21 16:40:16,085 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 555 places, 556 transitions, 1984 flow [2022-11-21 16:40:16,113 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 545 places, 556 transitions, 1911 flow, removed 26 selfloop flow, removed 10 redundant places. [2022-11-21 16:40:16,121 INFO L231 Difference]: Finished difference. Result has 550 places, 519 transitions, 1452 flow [2022-11-21 16:40:16,122 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=516, PETRI_DIFFERENCE_MINUEND_FLOW=1560, PETRI_DIFFERENCE_MINUEND_PLACES=532, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=530, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=526, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=1452, PETRI_PLACES=550, PETRI_TRANSITIONS=519} [2022-11-21 16:40:16,123 INFO L288 CegarLoopForPetriNet]: 463 programPoint places, 87 predicate places. [2022-11-21 16:40:16,124 INFO L495 AbstractCegarLoop]: Abstraction has has 550 places, 519 transitions, 1452 flow [2022-11-21 16:40:16,125 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 440.0) internal successors, (3960), 9 states have internal predecessors, (3960), 0 states have call successors, (0), 0 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 16:40:16,126 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 16:40:16,126 INFO L209 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:40:16,126 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-11-21 16:40:16,127 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 16:40:16,127 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:40:16,128 INFO L85 PathProgramCache]: Analyzing trace with hash -1739056286, now seen corresponding path program 9 times [2022-11-21 16:40:16,128 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:40:16,128 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1265324969] [2022-11-21 16:40:16,128 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:40:16,128 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:40:16,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:40:16,831 INFO L134 CoverageAnalysis]: Checked inductivity of 130 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 130 trivial. 0 not checked. [2022-11-21 16:40:16,831 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:40:16,831 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1265324969] [2022-11-21 16:40:16,832 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1265324969] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:40:16,832 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:40:16,832 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-11-21 16:40:16,832 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1726786201] [2022-11-21 16:40:16,833 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:40:16,833 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-21 16:40:16,833 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:40:16,834 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-21 16:40:16,835 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2022-11-21 16:40:16,839 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 436 out of 516 [2022-11-21 16:40:16,844 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 550 places, 519 transitions, 1452 flow. Second operand has 9 states, 9 states have (on average 440.0) internal successors, (3960), 9 states have internal predecessors, (3960), 0 states have call successors, (0), 0 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 16:40:16,844 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 16:40:16,844 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 436 of 516 [2022-11-21 16:40:16,845 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 16:40:18,053 INFO L130 PetriNetUnfolder]: 388/2533 cut-off events. [2022-11-21 16:40:18,054 INFO L131 PetriNetUnfolder]: For 2752/2766 co-relation queries the response was YES. [2022-11-21 16:40:18,086 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4684 conditions, 2533 events. 388/2533 cut-off events. For 2752/2766 co-relation queries the response was YES. Maximal size of possible extension queue 94. Compared 21298 event pairs, 216 based on Foata normal form. 2/2279 useless extension candidates. Maximal degree in co-relation 4638. Up to 535 conditions per place. [2022-11-21 16:40:18,099 INFO L137 encePairwiseOnDemand]: 505/516 looper letters, 75 selfloop transitions, 15 changer transitions 18/566 dead transitions. [2022-11-21 16:40:18,099 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 546 places, 566 transitions, 2027 flow [2022-11-21 16:40:18,100 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-11-21 16:40:18,100 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2022-11-21 16:40:18,108 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 7075 transitions. [2022-11-21 16:40:18,111 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.856952519379845 [2022-11-21 16:40:18,111 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 7075 transitions. [2022-11-21 16:40:18,112 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 7075 transitions. [2022-11-21 16:40:18,115 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 16:40:18,115 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 7075 transitions. [2022-11-21 16:40:18,126 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 442.1875) internal successors, (7075), 16 states have internal predecessors, (7075), 0 states have call successors, (0), 0 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 16:40:18,138 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 516.0) internal successors, (8772), 17 states have internal predecessors, (8772), 0 states have call successors, (0), 0 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 16:40:18,141 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 516.0) internal successors, (8772), 17 states have internal predecessors, (8772), 0 states have call successors, (0), 0 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 16:40:18,142 INFO L175 Difference]: Start difference. First operand has 550 places, 519 transitions, 1452 flow. Second operand 16 states and 7075 transitions. [2022-11-21 16:40:18,142 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 546 places, 566 transitions, 2027 flow [2022-11-21 16:40:18,166 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 533 places, 566 transitions, 1944 flow, removed 22 selfloop flow, removed 13 redundant places. [2022-11-21 16:40:18,174 INFO L231 Difference]: Finished difference. Result has 542 places, 528 transitions, 1588 flow [2022-11-21 16:40:18,175 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=516, PETRI_DIFFERENCE_MINUEND_FLOW=1418, PETRI_DIFFERENCE_MINUEND_PLACES=518, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=519, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=508, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=1588, PETRI_PLACES=542, PETRI_TRANSITIONS=528} [2022-11-21 16:40:18,177 INFO L288 CegarLoopForPetriNet]: 463 programPoint places, 79 predicate places. [2022-11-21 16:40:18,178 INFO L495 AbstractCegarLoop]: Abstraction has has 542 places, 528 transitions, 1588 flow [2022-11-21 16:40:18,179 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 440.0) internal successors, (3960), 9 states have internal predecessors, (3960), 0 states have call successors, (0), 0 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 16:40:18,179 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 16:40:18,180 INFO L209 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:40:18,180 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-11-21 16:40:18,180 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 16:40:18,182 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:40:18,182 INFO L85 PathProgramCache]: Analyzing trace with hash -1078839792, now seen corresponding path program 10 times [2022-11-21 16:40:18,183 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:40:18,183 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [100019973] [2022-11-21 16:40:18,183 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:40:18,183 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:40:18,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:40:18,683 INFO L134 CoverageAnalysis]: Checked inductivity of 130 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 130 trivial. 0 not checked. [2022-11-21 16:40:18,684 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:40:18,684 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [100019973] [2022-11-21 16:40:18,684 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [100019973] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:40:18,684 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:40:18,684 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-11-21 16:40:18,685 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1703299242] [2022-11-21 16:40:18,685 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:40:18,685 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-21 16:40:18,686 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:40:18,686 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-21 16:40:18,686 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2022-11-21 16:40:18,690 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 436 out of 516 [2022-11-21 16:40:18,694 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 542 places, 528 transitions, 1588 flow. Second operand has 9 states, 9 states have (on average 440.0) internal successors, (3960), 9 states have internal predecessors, (3960), 0 states have call successors, (0), 0 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 16:40:18,694 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 16:40:18,695 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 436 of 516 [2022-11-21 16:40:18,695 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 16:40:19,880 INFO L130 PetriNetUnfolder]: 407/2720 cut-off events. [2022-11-21 16:40:19,881 INFO L131 PetriNetUnfolder]: For 2572/2586 co-relation queries the response was YES. [2022-11-21 16:40:19,916 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4855 conditions, 2720 events. 407/2720 cut-off events. For 2572/2586 co-relation queries the response was YES. Maximal size of possible extension queue 93. Compared 22871 event pairs, 227 based on Foata normal form. 2/2427 useless extension candidates. Maximal degree in co-relation 4810. Up to 535 conditions per place. [2022-11-21 16:40:19,926 INFO L137 encePairwiseOnDemand]: 505/516 looper letters, 67 selfloop transitions, 17 changer transitions 18/560 dead transitions. [2022-11-21 16:40:19,927 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 548 places, 560 transitions, 2068 flow [2022-11-21 16:40:19,927 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-21 16:40:19,927 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2022-11-21 16:40:19,933 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 6634 transitions. [2022-11-21 16:40:19,936 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8571059431524548 [2022-11-21 16:40:19,937 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 6634 transitions. [2022-11-21 16:40:19,937 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 6634 transitions. [2022-11-21 16:40:19,940 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 16:40:19,940 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 6634 transitions. [2022-11-21 16:40:19,951 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 442.26666666666665) internal successors, (6634), 15 states have internal predecessors, (6634), 0 states have call successors, (0), 0 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 16:40:19,963 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 516.0) internal successors, (8256), 16 states have internal predecessors, (8256), 0 states have call successors, (0), 0 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 16:40:19,967 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 516.0) internal successors, (8256), 16 states have internal predecessors, (8256), 0 states have call successors, (0), 0 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 16:40:19,967 INFO L175 Difference]: Start difference. First operand has 542 places, 528 transitions, 1588 flow. Second operand 15 states and 6634 transitions. [2022-11-21 16:40:19,967 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 548 places, 560 transitions, 2068 flow [2022-11-21 16:40:19,992 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 542 places, 560 transitions, 2012 flow, removed 16 selfloop flow, removed 6 redundant places. [2022-11-21 16:40:20,003 INFO L231 Difference]: Finished difference. Result has 552 places, 532 transitions, 1681 flow [2022-11-21 16:40:20,004 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=516, PETRI_DIFFERENCE_MINUEND_FLOW=1550, PETRI_DIFFERENCE_MINUEND_PLACES=528, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=528, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=512, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=1681, PETRI_PLACES=552, PETRI_TRANSITIONS=532} [2022-11-21 16:40:20,005 INFO L288 CegarLoopForPetriNet]: 463 programPoint places, 89 predicate places. [2022-11-21 16:40:20,005 INFO L495 AbstractCegarLoop]: Abstraction has has 552 places, 532 transitions, 1681 flow [2022-11-21 16:40:20,006 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 440.0) internal successors, (3960), 9 states have internal predecessors, (3960), 0 states have call successors, (0), 0 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 16:40:20,007 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 16:40:20,007 INFO L209 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:40:20,007 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-11-21 16:40:20,008 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 16:40:20,008 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:40:20,008 INFO L85 PathProgramCache]: Analyzing trace with hash 1514320430, now seen corresponding path program 11 times [2022-11-21 16:40:20,011 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:40:20,011 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [667787816] [2022-11-21 16:40:20,011 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:40:20,012 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:40:20,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:40:20,489 INFO L134 CoverageAnalysis]: Checked inductivity of 130 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 130 trivial. 0 not checked. [2022-11-21 16:40:20,490 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:40:20,490 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [667787816] [2022-11-21 16:40:20,490 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [667787816] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:40:20,490 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:40:20,490 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-11-21 16:40:20,491 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [154977836] [2022-11-21 16:40:20,491 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:40:20,492 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-21 16:40:20,492 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:40:20,492 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-21 16:40:20,493 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2022-11-21 16:40:20,496 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 436 out of 516 [2022-11-21 16:40:20,501 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 552 places, 532 transitions, 1681 flow. Second operand has 9 states, 9 states have (on average 440.0) internal successors, (3960), 9 states have internal predecessors, (3960), 0 states have call successors, (0), 0 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 16:40:20,501 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 16:40:20,501 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 436 of 516 [2022-11-21 16:40:20,501 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 16:40:21,558 INFO L130 PetriNetUnfolder]: 403/2698 cut-off events. [2022-11-21 16:40:21,558 INFO L131 PetriNetUnfolder]: For 2805/2819 co-relation queries the response was YES. [2022-11-21 16:40:21,590 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4861 conditions, 2698 events. 403/2698 cut-off events. For 2805/2819 co-relation queries the response was YES. Maximal size of possible extension queue 93. Compared 22641 event pairs, 214 based on Foata normal form. 2/2412 useless extension candidates. Maximal degree in co-relation 4811. Up to 534 conditions per place. [2022-11-21 16:40:21,599 INFO L137 encePairwiseOnDemand]: 505/516 looper letters, 76 selfloop transitions, 8 changer transitions 23/565 dead transitions. [2022-11-21 16:40:21,600 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 557 places, 565 transitions, 2076 flow [2022-11-21 16:40:21,600 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-21 16:40:21,601 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2022-11-21 16:40:21,606 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 5762 transitions. [2022-11-21 16:40:21,609 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8589743589743589 [2022-11-21 16:40:21,609 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 5762 transitions. [2022-11-21 16:40:21,609 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 5762 transitions. [2022-11-21 16:40:21,612 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 16:40:21,612 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 5762 transitions. [2022-11-21 16:40:21,622 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 443.2307692307692) internal successors, (5762), 13 states have internal predecessors, (5762), 0 states have call successors, (0), 0 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 16:40:21,631 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 516.0) internal successors, (7224), 14 states have internal predecessors, (7224), 0 states have call successors, (0), 0 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 16:40:21,634 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 516.0) internal successors, (7224), 14 states have internal predecessors, (7224), 0 states have call successors, (0), 0 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 16:40:21,635 INFO L175 Difference]: Start difference. First operand has 552 places, 532 transitions, 1681 flow. Second operand 13 states and 5762 transitions. [2022-11-21 16:40:21,635 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 557 places, 565 transitions, 2076 flow [2022-11-21 16:40:21,662 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 549 places, 565 transitions, 2006 flow, removed 22 selfloop flow, removed 8 redundant places. [2022-11-21 16:40:21,670 INFO L231 Difference]: Finished difference. Result has 554 places, 524 transitions, 1539 flow [2022-11-21 16:40:21,672 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=516, PETRI_DIFFERENCE_MINUEND_FLOW=1620, PETRI_DIFFERENCE_MINUEND_PLACES=537, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=532, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=524, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=1539, PETRI_PLACES=554, PETRI_TRANSITIONS=524} [2022-11-21 16:40:21,673 INFO L288 CegarLoopForPetriNet]: 463 programPoint places, 91 predicate places. [2022-11-21 16:40:21,673 INFO L495 AbstractCegarLoop]: Abstraction has has 554 places, 524 transitions, 1539 flow [2022-11-21 16:40:21,675 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 440.0) internal successors, (3960), 9 states have internal predecessors, (3960), 0 states have call successors, (0), 0 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 16:40:21,675 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 16:40:21,675 INFO L209 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:40:21,676 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-11-21 16:40:21,676 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 16:40:21,677 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:40:21,677 INFO L85 PathProgramCache]: Analyzing trace with hash 9838418, now seen corresponding path program 12 times [2022-11-21 16:40:21,677 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:40:21,677 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1364352441] [2022-11-21 16:40:21,678 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:40:21,678 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:40:21,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:40:22,221 INFO L134 CoverageAnalysis]: Checked inductivity of 130 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 130 trivial. 0 not checked. [2022-11-21 16:40:22,222 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:40:22,222 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1364352441] [2022-11-21 16:40:22,222 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1364352441] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:40:22,222 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:40:22,223 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-11-21 16:40:22,223 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [21525856] [2022-11-21 16:40:22,223 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:40:22,224 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-21 16:40:22,224 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:40:22,225 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-21 16:40:22,225 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2022-11-21 16:40:22,229 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 436 out of 516 [2022-11-21 16:40:22,244 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 554 places, 524 transitions, 1539 flow. Second operand has 9 states, 9 states have (on average 440.0) internal successors, (3960), 9 states have internal predecessors, (3960), 0 states have call successors, (0), 0 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 16:40:22,255 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 16:40:22,256 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 436 of 516 [2022-11-21 16:40:22,256 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 16:40:23,404 INFO L130 PetriNetUnfolder]: 397/2655 cut-off events. [2022-11-21 16:40:23,404 INFO L131 PetriNetUnfolder]: For 2510/2524 co-relation queries the response was YES. [2022-11-21 16:40:23,435 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4661 conditions, 2655 events. 397/2655 cut-off events. For 2510/2524 co-relation queries the response was YES. Maximal size of possible extension queue 92. Compared 22148 event pairs, 225 based on Foata normal form. 2/2364 useless extension candidates. Maximal degree in co-relation 4612. Up to 524 conditions per place. [2022-11-21 16:40:23,445 INFO L137 encePairwiseOnDemand]: 505/516 looper letters, 62 selfloop transitions, 2 changer transitions 24/546 dead transitions. [2022-11-21 16:40:23,446 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 554 places, 546 transitions, 1845 flow [2022-11-21 16:40:23,446 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-21 16:40:23,447 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2022-11-21 16:40:23,455 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 6191 transitions. [2022-11-21 16:40:23,459 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8570044296788483 [2022-11-21 16:40:23,459 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 6191 transitions. [2022-11-21 16:40:23,460 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 6191 transitions. [2022-11-21 16:40:23,464 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 16:40:23,464 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 6191 transitions. [2022-11-21 16:40:23,477 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 442.2142857142857) internal successors, (6191), 14 states have internal predecessors, (6191), 0 states have call successors, (0), 0 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 16:40:23,488 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 516.0) internal successors, (7740), 15 states have internal predecessors, (7740), 0 states have call successors, (0), 0 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 16:40:23,490 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 516.0) internal successors, (7740), 15 states have internal predecessors, (7740), 0 states have call successors, (0), 0 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 16:40:23,492 INFO L175 Difference]: Start difference. First operand has 554 places, 524 transitions, 1539 flow. Second operand 14 states and 6191 transitions. [2022-11-21 16:40:23,492 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 554 places, 546 transitions, 1845 flow [2022-11-21 16:40:23,517 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 540 places, 546 transitions, 1777 flow, removed 16 selfloop flow, removed 14 redundant places. [2022-11-21 16:40:23,527 INFO L231 Difference]: Finished difference. Result has 545 places, 513 transitions, 1378 flow [2022-11-21 16:40:23,528 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=516, PETRI_DIFFERENCE_MINUEND_FLOW=1493, PETRI_DIFFERENCE_MINUEND_PLACES=527, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=524, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=522, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=1378, PETRI_PLACES=545, PETRI_TRANSITIONS=513} [2022-11-21 16:40:23,528 INFO L288 CegarLoopForPetriNet]: 463 programPoint places, 82 predicate places. [2022-11-21 16:40:23,529 INFO L495 AbstractCegarLoop]: Abstraction has has 545 places, 513 transitions, 1378 flow [2022-11-21 16:40:23,530 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 440.0) internal successors, (3960), 9 states have internal predecessors, (3960), 0 states have call successors, (0), 0 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 16:40:23,530 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 16:40:23,530 INFO L209 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:40:23,530 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-11-21 16:40:23,533 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-21 16:40:23,533 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:40:23,533 INFO L85 PathProgramCache]: Analyzing trace with hash -462813012, now seen corresponding path program 1 times [2022-11-21 16:40:23,534 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:40:23,534 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1304910370] [2022-11-21 16:40:23,534 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:40:23,535 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:40:23,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:40:24,110 INFO L134 CoverageAnalysis]: Checked inductivity of 130 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 130 trivial. 0 not checked. [2022-11-21 16:40:24,111 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:40:24,111 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1304910370] [2022-11-21 16:40:24,111 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1304910370] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:40:24,111 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:40:24,111 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-11-21 16:40:24,112 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [653198814] [2022-11-21 16:40:24,112 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:40:24,113 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-21 16:40:24,113 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:40:24,113 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-21 16:40:24,114 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2022-11-21 16:40:24,117 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 436 out of 516 [2022-11-21 16:40:24,121 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 545 places, 513 transitions, 1378 flow. Second operand has 9 states, 9 states have (on average 440.0) internal successors, (3960), 9 states have internal predecessors, (3960), 0 states have call successors, (0), 0 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 16:40:24,121 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 16:40:24,121 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 436 of 516 [2022-11-21 16:40:24,121 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 16:40:25,354 INFO L130 PetriNetUnfolder]: 422/2811 cut-off events. [2022-11-21 16:40:25,354 INFO L131 PetriNetUnfolder]: For 2303/2323 co-relation queries the response was YES. [2022-11-21 16:40:25,370 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4811 conditions, 2811 events. 422/2811 cut-off events. For 2303/2323 co-relation queries the response was YES. Maximal size of possible extension queue 90. Compared 23407 event pairs, 225 based on Foata normal form. 2/2515 useless extension candidates. Maximal degree in co-relation 4766. Up to 543 conditions per place. [2022-11-21 16:40:25,379 INFO L137 encePairwiseOnDemand]: 505/516 looper letters, 75 selfloop transitions, 13 changer transitions 16/563 dead transitions. [2022-11-21 16:40:25,379 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 541 places, 563 transitions, 1854 flow [2022-11-21 16:40:25,380 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-11-21 16:40:25,380 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2022-11-21 16:40:25,386 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 7076 transitions. [2022-11-21 16:40:25,390 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8570736434108527 [2022-11-21 16:40:25,390 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 7076 transitions. [2022-11-21 16:40:25,390 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 7076 transitions. [2022-11-21 16:40:25,394 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 16:40:25,394 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 7076 transitions. [2022-11-21 16:40:25,405 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 442.25) internal successors, (7076), 16 states have internal predecessors, (7076), 0 states have call successors, (0), 0 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 16:40:25,416 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 516.0) internal successors, (8772), 17 states have internal predecessors, (8772), 0 states have call successors, (0), 0 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 16:40:25,419 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 516.0) internal successors, (8772), 17 states have internal predecessors, (8772), 0 states have call successors, (0), 0 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 16:40:25,419 INFO L175 Difference]: Start difference. First operand has 545 places, 513 transitions, 1378 flow. Second operand 16 states and 7076 transitions. [2022-11-21 16:40:25,419 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 541 places, 563 transitions, 1854 flow [2022-11-21 16:40:25,437 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 526 places, 563 transitions, 1818 flow, removed 14 selfloop flow, removed 15 redundant places. [2022-11-21 16:40:25,445 INFO L231 Difference]: Finished difference. Result has 535 places, 527 transitions, 1531 flow [2022-11-21 16:40:25,446 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=516, PETRI_DIFFERENCE_MINUEND_FLOW=1346, PETRI_DIFFERENCE_MINUEND_PLACES=511, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=513, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=506, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=1531, PETRI_PLACES=535, PETRI_TRANSITIONS=527} [2022-11-21 16:40:25,447 INFO L288 CegarLoopForPetriNet]: 463 programPoint places, 72 predicate places. [2022-11-21 16:40:25,447 INFO L495 AbstractCegarLoop]: Abstraction has has 535 places, 527 transitions, 1531 flow [2022-11-21 16:40:25,448 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 440.0) internal successors, (3960), 9 states have internal predecessors, (3960), 0 states have call successors, (0), 0 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 16:40:25,448 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 16:40:25,448 INFO L209 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:40:25,449 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-11-21 16:40:25,449 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-21 16:40:25,449 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:40:25,450 INFO L85 PathProgramCache]: Analyzing trace with hash 2701542, now seen corresponding path program 2 times [2022-11-21 16:40:25,450 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:40:25,450 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [347695606] [2022-11-21 16:40:25,450 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:40:25,451 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:40:25,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:40:25,894 INFO L134 CoverageAnalysis]: Checked inductivity of 130 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 130 trivial. 0 not checked. [2022-11-21 16:40:25,894 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:40:25,894 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [347695606] [2022-11-21 16:40:25,895 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [347695606] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:40:25,895 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:40:25,895 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-11-21 16:40:25,895 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1061359608] [2022-11-21 16:40:25,896 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:40:25,897 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-21 16:40:25,897 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:40:25,898 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-21 16:40:25,898 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2022-11-21 16:40:25,902 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 436 out of 516 [2022-11-21 16:40:25,905 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 535 places, 527 transitions, 1531 flow. Second operand has 9 states, 9 states have (on average 440.0) internal successors, (3960), 9 states have internal predecessors, (3960), 0 states have call successors, (0), 0 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 16:40:25,905 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 16:40:25,905 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 436 of 516 [2022-11-21 16:40:25,905 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 16:40:26,790 INFO L130 PetriNetUnfolder]: 396/2510 cut-off events. [2022-11-21 16:40:26,790 INFO L131 PetriNetUnfolder]: For 2674/2710 co-relation queries the response was YES. [2022-11-21 16:40:26,808 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4753 conditions, 2510 events. 396/2510 cut-off events. For 2674/2710 co-relation queries the response was YES. Maximal size of possible extension queue 88. Compared 20529 event pairs, 221 based on Foata normal form. 8/2271 useless extension candidates. Maximal degree in co-relation 4711. Up to 506 conditions per place. [2022-11-21 16:40:26,818 INFO L137 encePairwiseOnDemand]: 505/516 looper letters, 110 selfloop transitions, 8 changer transitions 22/599 dead transitions. [2022-11-21 16:40:26,818 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 544 places, 599 transitions, 2189 flow [2022-11-21 16:40:26,819 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-11-21 16:40:26,819 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-11-21 16:40:26,826 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 7977 transitions. [2022-11-21 16:40:26,830 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8588501291989664 [2022-11-21 16:40:26,831 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 7977 transitions. [2022-11-21 16:40:26,831 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 7977 transitions. [2022-11-21 16:40:26,835 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 16:40:26,835 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 7977 transitions. [2022-11-21 16:40:26,847 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 443.1666666666667) internal successors, (7977), 18 states have internal predecessors, (7977), 0 states have call successors, (0), 0 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 16:40:26,860 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 516.0) internal successors, (9804), 19 states have internal predecessors, (9804), 0 states have call successors, (0), 0 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 16:40:26,862 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 516.0) internal successors, (9804), 19 states have internal predecessors, (9804), 0 states have call successors, (0), 0 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 16:40:26,863 INFO L175 Difference]: Start difference. First operand has 535 places, 527 transitions, 1531 flow. Second operand 18 states and 7977 transitions. [2022-11-21 16:40:26,863 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 544 places, 599 transitions, 2189 flow [2022-11-21 16:40:26,890 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 541 places, 599 transitions, 2057 flow, removed 66 selfloop flow, removed 3 redundant places. [2022-11-21 16:40:26,898 INFO L231 Difference]: Finished difference. Result has 554 places, 527 transitions, 1506 flow [2022-11-21 16:40:26,899 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=516, PETRI_DIFFERENCE_MINUEND_FLOW=1453, PETRI_DIFFERENCE_MINUEND_PLACES=524, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=527, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=519, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=1506, PETRI_PLACES=554, PETRI_TRANSITIONS=527} [2022-11-21 16:40:26,900 INFO L288 CegarLoopForPetriNet]: 463 programPoint places, 91 predicate places. [2022-11-21 16:40:26,900 INFO L495 AbstractCegarLoop]: Abstraction has has 554 places, 527 transitions, 1506 flow [2022-11-21 16:40:26,901 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 440.0) internal successors, (3960), 9 states have internal predecessors, (3960), 0 states have call successors, (0), 0 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 16:40:26,901 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 16:40:26,901 INFO L209 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:40:26,902 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-11-21 16:40:26,902 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-21 16:40:26,902 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:40:26,903 INFO L85 PathProgramCache]: Analyzing trace with hash 1591889934, now seen corresponding path program 3 times [2022-11-21 16:40:26,903 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:40:26,903 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2002355862] [2022-11-21 16:40:26,903 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:40:26,904 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:40:26,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:40:27,366 INFO L134 CoverageAnalysis]: Checked inductivity of 130 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 130 trivial. 0 not checked. [2022-11-21 16:40:27,367 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:40:27,367 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2002355862] [2022-11-21 16:40:27,367 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2002355862] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:40:27,367 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:40:27,367 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-11-21 16:40:27,369 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1635795433] [2022-11-21 16:40:27,369 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:40:27,371 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-21 16:40:27,371 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:40:27,372 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-21 16:40:27,372 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2022-11-21 16:40:27,375 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 436 out of 516 [2022-11-21 16:40:27,379 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 554 places, 527 transitions, 1506 flow. Second operand has 9 states, 9 states have (on average 440.0) internal successors, (3960), 9 states have internal predecessors, (3960), 0 states have call successors, (0), 0 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 16:40:27,379 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 16:40:27,379 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 436 of 516 [2022-11-21 16:40:27,379 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 16:40:28,368 INFO L130 PetriNetUnfolder]: 410/2746 cut-off events. [2022-11-21 16:40:28,368 INFO L131 PetriNetUnfolder]: For 4043/4086 co-relation queries the response was YES. [2022-11-21 16:40:28,389 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5417 conditions, 2746 events. 410/2746 cut-off events. For 4043/4086 co-relation queries the response was YES. Maximal size of possible extension queue 98. Compared 23372 event pairs, 233 based on Foata normal form. 2/2470 useless extension candidates. Maximal degree in co-relation 5364. Up to 546 conditions per place. [2022-11-21 16:40:28,399 INFO L137 encePairwiseOnDemand]: 505/516 looper letters, 113 selfloop transitions, 10 changer transitions 24/606 dead transitions. [2022-11-21 16:40:28,400 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 559 places, 606 transitions, 2318 flow [2022-11-21 16:40:28,400 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-11-21 16:40:28,400 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2022-11-21 16:40:28,407 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 7524 transitions. [2022-11-21 16:40:28,411 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8577291381668947 [2022-11-21 16:40:28,412 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 7524 transitions. [2022-11-21 16:40:28,412 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 7524 transitions. [2022-11-21 16:40:28,415 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 16:40:28,416 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 7524 transitions. [2022-11-21 16:40:28,427 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 442.5882352941176) internal successors, (7524), 17 states have internal predecessors, (7524), 0 states have call successors, (0), 0 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 16:40:28,439 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 516.0) internal successors, (9288), 18 states have internal predecessors, (9288), 0 states have call successors, (0), 0 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 16:40:28,441 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 516.0) internal successors, (9288), 18 states have internal predecessors, (9288), 0 states have call successors, (0), 0 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 16:40:28,441 INFO L175 Difference]: Start difference. First operand has 554 places, 527 transitions, 1506 flow. Second operand 17 states and 7524 transitions. [2022-11-21 16:40:28,442 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 559 places, 606 transitions, 2318 flow [2022-11-21 16:40:28,473 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 549 places, 606 transitions, 2250 flow, removed 32 selfloop flow, removed 10 redundant places. [2022-11-21 16:40:28,481 INFO L231 Difference]: Finished difference. Result has 564 places, 531 transitions, 1597 flow [2022-11-21 16:40:28,482 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=516, PETRI_DIFFERENCE_MINUEND_FLOW=1483, PETRI_DIFFERENCE_MINUEND_PLACES=533, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=527, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=517, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=1597, PETRI_PLACES=564, PETRI_TRANSITIONS=531} [2022-11-21 16:40:28,483 INFO L288 CegarLoopForPetriNet]: 463 programPoint places, 101 predicate places. [2022-11-21 16:40:28,483 INFO L495 AbstractCegarLoop]: Abstraction has has 564 places, 531 transitions, 1597 flow [2022-11-21 16:40:28,484 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 440.0) internal successors, (3960), 9 states have internal predecessors, (3960), 0 states have call successors, (0), 0 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 16:40:28,485 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 16:40:28,485 INFO L209 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:40:28,485 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-11-21 16:40:28,485 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-21 16:40:28,486 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:40:28,486 INFO L85 PathProgramCache]: Analyzing trace with hash -1715047470, now seen corresponding path program 4 times [2022-11-21 16:40:28,486 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:40:28,487 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1531020735] [2022-11-21 16:40:28,487 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:40:28,487 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:40:28,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:40:28,940 INFO L134 CoverageAnalysis]: Checked inductivity of 130 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 130 trivial. 0 not checked. [2022-11-21 16:40:28,940 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:40:28,940 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1531020735] [2022-11-21 16:40:28,940 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1531020735] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:40:28,941 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:40:28,941 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-11-21 16:40:28,941 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1664897539] [2022-11-21 16:40:28,941 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:40:28,942 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-21 16:40:28,942 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:40:28,942 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-21 16:40:28,943 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2022-11-21 16:40:28,946 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 436 out of 516 [2022-11-21 16:40:28,949 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 564 places, 531 transitions, 1597 flow. Second operand has 9 states, 9 states have (on average 440.0) internal successors, (3960), 9 states have internal predecessors, (3960), 0 states have call successors, (0), 0 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 16:40:28,950 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 16:40:28,950 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 436 of 516 [2022-11-21 16:40:28,950 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 16:40:29,976 INFO L130 PetriNetUnfolder]: 421/2882 cut-off events. [2022-11-21 16:40:29,976 INFO L131 PetriNetUnfolder]: For 4298/4336 co-relation queries the response was YES. [2022-11-21 16:40:29,996 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5622 conditions, 2882 events. 421/2882 cut-off events. For 4298/4336 co-relation queries the response was YES. Maximal size of possible extension queue 98. Compared 24493 event pairs, 235 based on Foata normal form. 5/2587 useless extension candidates. Maximal degree in co-relation 5563. Up to 564 conditions per place. [2022-11-21 16:40:30,007 INFO L137 encePairwiseOnDemand]: 505/516 looper letters, 79 selfloop transitions, 4 changer transitions 20/562 dead transitions. [2022-11-21 16:40:30,008 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 564 places, 562 transitions, 2019 flow [2022-11-21 16:40:30,008 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-21 16:40:30,009 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2022-11-21 16:40:30,017 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 5759 transitions. [2022-11-21 16:40:30,021 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8585271317829457 [2022-11-21 16:40:30,021 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 5759 transitions. [2022-11-21 16:40:30,021 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 5759 transitions. [2022-11-21 16:40:30,026 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 16:40:30,028 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 5759 transitions. [2022-11-21 16:40:30,045 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 443.0) internal successors, (5759), 13 states have internal predecessors, (5759), 0 states have call successors, (0), 0 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 16:40:30,054 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 516.0) internal successors, (7224), 14 states have internal predecessors, (7224), 0 states have call successors, (0), 0 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 16:40:30,055 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 516.0) internal successors, (7224), 14 states have internal predecessors, (7224), 0 states have call successors, (0), 0 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 16:40:30,056 INFO L175 Difference]: Start difference. First operand has 564 places, 531 transitions, 1597 flow. Second operand 13 states and 5759 transitions. [2022-11-21 16:40:30,056 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 564 places, 562 transitions, 2019 flow [2022-11-21 16:40:30,089 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 552 places, 562 transitions, 1960 flow, removed 28 selfloop flow, removed 12 redundant places. [2022-11-21 16:40:30,097 INFO L231 Difference]: Finished difference. Result has 557 places, 523 transitions, 1498 flow [2022-11-21 16:40:30,097 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=516, PETRI_DIFFERENCE_MINUEND_FLOW=1559, PETRI_DIFFERENCE_MINUEND_PLACES=540, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=531, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=527, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=1498, PETRI_PLACES=557, PETRI_TRANSITIONS=523} [2022-11-21 16:40:30,098 INFO L288 CegarLoopForPetriNet]: 463 programPoint places, 94 predicate places. [2022-11-21 16:40:30,098 INFO L495 AbstractCegarLoop]: Abstraction has has 557 places, 523 transitions, 1498 flow [2022-11-21 16:40:30,099 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 440.0) internal successors, (3960), 9 states have internal predecessors, (3960), 0 states have call successors, (0), 0 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 16:40:30,099 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 16:40:30,100 INFO L209 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:40:30,100 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-11-21 16:40:30,100 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-21 16:40:30,101 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:40:30,101 INFO L85 PathProgramCache]: Analyzing trace with hash -931110008, now seen corresponding path program 5 times [2022-11-21 16:40:30,101 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:40:30,101 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [968944735] [2022-11-21 16:40:30,102 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:40:30,102 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:40:30,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:40:30,578 INFO L134 CoverageAnalysis]: Checked inductivity of 130 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 130 trivial. 0 not checked. [2022-11-21 16:40:30,579 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:40:30,579 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [968944735] [2022-11-21 16:40:30,579 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [968944735] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:40:30,579 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:40:30,579 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-11-21 16:40:30,580 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1346790372] [2022-11-21 16:40:30,580 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:40:30,581 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-21 16:40:30,581 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:40:30,582 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-21 16:40:30,582 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2022-11-21 16:40:30,586 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 436 out of 516 [2022-11-21 16:40:30,589 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 557 places, 523 transitions, 1498 flow. Second operand has 9 states, 9 states have (on average 440.0) internal successors, (3960), 9 states have internal predecessors, (3960), 0 states have call successors, (0), 0 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 16:40:30,590 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 16:40:30,590 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 436 of 516 [2022-11-21 16:40:30,590 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 16:40:31,604 INFO L130 PetriNetUnfolder]: 417/2806 cut-off events. [2022-11-21 16:40:31,604 INFO L131 PetriNetUnfolder]: For 3848/3881 co-relation queries the response was YES. [2022-11-21 16:40:31,621 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5489 conditions, 2806 events. 417/2806 cut-off events. For 3848/3881 co-relation queries the response was YES. Maximal size of possible extension queue 98. Compared 23794 event pairs, 248 based on Foata normal form. 2/2509 useless extension candidates. Maximal degree in co-relation 5436. Up to 601 conditions per place. [2022-11-21 16:40:31,631 INFO L137 encePairwiseOnDemand]: 505/516 looper letters, 78 selfloop transitions, 14 changer transitions 16/567 dead transitions. [2022-11-21 16:40:31,631 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 557 places, 567 transitions, 2101 flow [2022-11-21 16:40:31,632 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-21 16:40:31,632 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2022-11-21 16:40:31,644 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 6196 transitions. [2022-11-21 16:40:31,649 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8576965669988926 [2022-11-21 16:40:31,649 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 6196 transitions. [2022-11-21 16:40:31,649 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 6196 transitions. [2022-11-21 16:40:31,654 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 16:40:31,654 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 6196 transitions. [2022-11-21 16:40:31,670 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 442.57142857142856) internal successors, (6196), 14 states have internal predecessors, (6196), 0 states have call successors, (0), 0 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 16:40:31,681 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 516.0) internal successors, (7740), 15 states have internal predecessors, (7740), 0 states have call successors, (0), 0 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 16:40:31,683 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 516.0) internal successors, (7740), 15 states have internal predecessors, (7740), 0 states have call successors, (0), 0 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 16:40:31,684 INFO L175 Difference]: Start difference. First operand has 557 places, 523 transitions, 1498 flow. Second operand 14 states and 6196 transitions. [2022-11-21 16:40:31,684 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 557 places, 567 transitions, 2101 flow [2022-11-21 16:40:31,710 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 544 places, 567 transitions, 1987 flow, removed 38 selfloop flow, removed 13 redundant places. [2022-11-21 16:40:31,720 INFO L231 Difference]: Finished difference. Result has 555 places, 533 transitions, 1629 flow [2022-11-21 16:40:31,721 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=516, PETRI_DIFFERENCE_MINUEND_FLOW=1464, PETRI_DIFFERENCE_MINUEND_PLACES=531, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=523, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=514, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=1629, PETRI_PLACES=555, PETRI_TRANSITIONS=533} [2022-11-21 16:40:31,722 INFO L288 CegarLoopForPetriNet]: 463 programPoint places, 92 predicate places. [2022-11-21 16:40:31,722 INFO L495 AbstractCegarLoop]: Abstraction has has 555 places, 533 transitions, 1629 flow [2022-11-21 16:40:31,723 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 440.0) internal successors, (3960), 9 states have internal predecessors, (3960), 0 states have call successors, (0), 0 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 16:40:31,723 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 16:40:31,724 INFO L209 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:40:31,724 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-11-21 16:40:31,726 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-21 16:40:31,726 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:40:31,727 INFO L85 PathProgramCache]: Analyzing trace with hash 196771238, now seen corresponding path program 6 times [2022-11-21 16:40:31,727 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:40:31,727 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1689243966] [2022-11-21 16:40:31,727 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:40:31,728 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:40:31,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:40:32,332 INFO L134 CoverageAnalysis]: Checked inductivity of 130 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 130 trivial. 0 not checked. [2022-11-21 16:40:32,332 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:40:32,332 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1689243966] [2022-11-21 16:40:32,332 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1689243966] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:40:32,333 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:40:32,333 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-11-21 16:40:32,333 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1899726140] [2022-11-21 16:40:32,333 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:40:32,334 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-21 16:40:32,334 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:40:32,334 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-21 16:40:32,334 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2022-11-21 16:40:32,339 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 436 out of 516 [2022-11-21 16:40:32,344 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 555 places, 533 transitions, 1629 flow. Second operand has 9 states, 9 states have (on average 440.0) internal successors, (3960), 9 states have internal predecessors, (3960), 0 states have call successors, (0), 0 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 16:40:32,345 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 16:40:32,345 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 436 of 516 [2022-11-21 16:40:32,345 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 16:40:33,256 INFO L130 PetriNetUnfolder]: 413/2728 cut-off events. [2022-11-21 16:40:33,256 INFO L131 PetriNetUnfolder]: For 3660/3690 co-relation queries the response was YES. [2022-11-21 16:40:33,276 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5446 conditions, 2728 events. 413/2728 cut-off events. For 3660/3690 co-relation queries the response was YES. Maximal size of possible extension queue 97. Compared 23169 event pairs, 249 based on Foata normal form. 2/2439 useless extension candidates. Maximal degree in co-relation 5392. Up to 569 conditions per place. [2022-11-21 16:40:33,283 INFO L137 encePairwiseOnDemand]: 505/516 looper letters, 84 selfloop transitions, 11 changer transitions 17/571 dead transitions. [2022-11-21 16:40:33,283 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 563 places, 571 transitions, 2221 flow [2022-11-21 16:40:33,283 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-21 16:40:33,283 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2022-11-21 16:40:33,289 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 6633 transitions. [2022-11-21 16:40:33,292 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8569767441860465 [2022-11-21 16:40:33,292 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 6633 transitions. [2022-11-21 16:40:33,292 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 6633 transitions. [2022-11-21 16:40:33,295 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 16:40:33,295 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 6633 transitions. [2022-11-21 16:40:33,306 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 442.2) internal successors, (6633), 15 states have internal predecessors, (6633), 0 states have call successors, (0), 0 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 16:40:33,315 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 516.0) internal successors, (8256), 16 states have internal predecessors, (8256), 0 states have call successors, (0), 0 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 16:40:33,317 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 516.0) internal successors, (8256), 16 states have internal predecessors, (8256), 0 states have call successors, (0), 0 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 16:40:33,317 INFO L175 Difference]: Start difference. First operand has 555 places, 533 transitions, 1629 flow. Second operand 15 states and 6633 transitions. [2022-11-21 16:40:33,318 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 563 places, 571 transitions, 2221 flow [2022-11-21 16:40:33,346 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 557 places, 571 transitions, 2151 flow, removed 28 selfloop flow, removed 6 redundant places. [2022-11-21 16:40:33,353 INFO L231 Difference]: Finished difference. Result has 568 places, 538 transitions, 1706 flow [2022-11-21 16:40:33,354 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=516, PETRI_DIFFERENCE_MINUEND_FLOW=1588, PETRI_DIFFERENCE_MINUEND_PLACES=543, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=533, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=525, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=1706, PETRI_PLACES=568, PETRI_TRANSITIONS=538} [2022-11-21 16:40:33,355 INFO L288 CegarLoopForPetriNet]: 463 programPoint places, 105 predicate places. [2022-11-21 16:40:33,355 INFO L495 AbstractCegarLoop]: Abstraction has has 568 places, 538 transitions, 1706 flow [2022-11-21 16:40:33,356 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 440.0) internal successors, (3960), 9 states have internal predecessors, (3960), 0 states have call successors, (0), 0 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 16:40:33,356 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 16:40:33,357 INFO L209 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:40:33,357 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-11-21 16:40:33,357 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-21 16:40:33,357 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:40:33,358 INFO L85 PathProgramCache]: Analyzing trace with hash 1099318846, now seen corresponding path program 7 times [2022-11-21 16:40:33,358 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:40:33,358 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2067243804] [2022-11-21 16:40:33,358 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:40:33,358 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:40:33,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:40:33,817 INFO L134 CoverageAnalysis]: Checked inductivity of 130 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 130 trivial. 0 not checked. [2022-11-21 16:40:33,817 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:40:33,817 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2067243804] [2022-11-21 16:40:33,817 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2067243804] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:40:33,818 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:40:33,818 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-11-21 16:40:33,818 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [373476125] [2022-11-21 16:40:33,818 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:40:33,819 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-21 16:40:33,819 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:40:33,819 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-21 16:40:33,820 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2022-11-21 16:40:33,823 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 436 out of 516 [2022-11-21 16:40:33,827 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 568 places, 538 transitions, 1706 flow. Second operand has 9 states, 9 states have (on average 440.0) internal successors, (3960), 9 states have internal predecessors, (3960), 0 states have call successors, (0), 0 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 16:40:33,827 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 16:40:33,827 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 436 of 516 [2022-11-21 16:40:33,827 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 16:40:34,834 INFO L130 PetriNetUnfolder]: 410/2725 cut-off events. [2022-11-21 16:40:34,835 INFO L131 PetriNetUnfolder]: For 4310/4351 co-relation queries the response was YES. [2022-11-21 16:40:34,855 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5524 conditions, 2725 events. 410/2725 cut-off events. For 4310/4351 co-relation queries the response was YES. Maximal size of possible extension queue 97. Compared 23198 event pairs, 247 based on Foata normal form. 4/2441 useless extension candidates. Maximal degree in co-relation 5464. Up to 563 conditions per place. [2022-11-21 16:40:34,861 INFO L137 encePairwiseOnDemand]: 505/516 looper letters, 79 selfloop transitions, 14 changer transitions 19/571 dead transitions. [2022-11-21 16:40:34,861 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 573 places, 571 transitions, 2264 flow [2022-11-21 16:40:34,863 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-21 16:40:34,863 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2022-11-21 16:40:34,867 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 6632 transitions. [2022-11-21 16:40:34,869 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8568475452196382 [2022-11-21 16:40:34,870 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 6632 transitions. [2022-11-21 16:40:34,870 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 6632 transitions. [2022-11-21 16:40:34,873 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 16:40:34,873 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 6632 transitions. [2022-11-21 16:40:34,883 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 442.1333333333333) internal successors, (6632), 15 states have internal predecessors, (6632), 0 states have call successors, (0), 0 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 16:40:34,892 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 516.0) internal successors, (8256), 16 states have internal predecessors, (8256), 0 states have call successors, (0), 0 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 16:40:34,894 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 516.0) internal successors, (8256), 16 states have internal predecessors, (8256), 0 states have call successors, (0), 0 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 16:40:34,895 INFO L175 Difference]: Start difference. First operand has 568 places, 538 transitions, 1706 flow. Second operand 15 states and 6632 transitions. [2022-11-21 16:40:34,895 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 573 places, 571 transitions, 2264 flow [2022-11-21 16:40:34,930 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 565 places, 571 transitions, 2193 flow, removed 31 selfloop flow, removed 8 redundant places. [2022-11-21 16:40:34,938 INFO L231 Difference]: Finished difference. Result has 575 places, 542 transitions, 1794 flow [2022-11-21 16:40:34,939 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=516, PETRI_DIFFERENCE_MINUEND_FLOW=1673, PETRI_DIFFERENCE_MINUEND_PLACES=551, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=538, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=525, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=1794, PETRI_PLACES=575, PETRI_TRANSITIONS=542} [2022-11-21 16:40:34,940 INFO L288 CegarLoopForPetriNet]: 463 programPoint places, 112 predicate places. [2022-11-21 16:40:34,940 INFO L495 AbstractCegarLoop]: Abstraction has has 575 places, 542 transitions, 1794 flow [2022-11-21 16:40:34,940 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 440.0) internal successors, (3960), 9 states have internal predecessors, (3960), 0 states have call successors, (0), 0 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 16:40:34,941 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 16:40:34,941 INFO L209 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:40:34,941 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2022-11-21 16:40:34,941 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-21 16:40:34,942 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:40:34,942 INFO L85 PathProgramCache]: Analyzing trace with hash -1292085182, now seen corresponding path program 8 times [2022-11-21 16:40:34,942 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:40:34,943 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1689339826] [2022-11-21 16:40:34,943 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:40:34,943 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:40:34,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:40:35,373 INFO L134 CoverageAnalysis]: Checked inductivity of 130 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 130 trivial. 0 not checked. [2022-11-21 16:40:35,373 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:40:35,373 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1689339826] [2022-11-21 16:40:35,374 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1689339826] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:40:35,374 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:40:35,374 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-11-21 16:40:35,374 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1514757832] [2022-11-21 16:40:35,374 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:40:35,375 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-21 16:40:35,375 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:40:35,376 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-21 16:40:35,376 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2022-11-21 16:40:35,380 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 436 out of 516 [2022-11-21 16:40:35,383 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 575 places, 542 transitions, 1794 flow. Second operand has 9 states, 9 states have (on average 440.0) internal successors, (3960), 9 states have internal predecessors, (3960), 0 states have call successors, (0), 0 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 16:40:35,383 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 16:40:35,383 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 436 of 516 [2022-11-21 16:40:35,383 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 16:40:36,274 INFO L130 PetriNetUnfolder]: 387/2578 cut-off events. [2022-11-21 16:40:36,275 INFO L131 PetriNetUnfolder]: For 4045/4090 co-relation queries the response was YES. [2022-11-21 16:40:36,297 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5299 conditions, 2578 events. 387/2578 cut-off events. For 4045/4090 co-relation queries the response was YES. Maximal size of possible extension queue 96. Compared 21695 event pairs, 235 based on Foata normal form. 4/2318 useless extension candidates. Maximal degree in co-relation 5236. Up to 560 conditions per place. [2022-11-21 16:40:36,303 INFO L137 encePairwiseOnDemand]: 505/516 looper letters, 77 selfloop transitions, 4 changer transitions 21/561 dead transitions. [2022-11-21 16:40:36,303 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 581 places, 561 transitions, 2143 flow [2022-11-21 16:40:36,303 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-21 16:40:36,304 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2022-11-21 16:40:36,309 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 6188 transitions. [2022-11-21 16:40:36,311 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8565891472868217 [2022-11-21 16:40:36,311 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 6188 transitions. [2022-11-21 16:40:36,312 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 6188 transitions. [2022-11-21 16:40:36,314 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 16:40:36,315 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 6188 transitions. [2022-11-21 16:40:36,323 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 442.0) internal successors, (6188), 14 states have internal predecessors, (6188), 0 states have call successors, (0), 0 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 16:40:36,331 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 516.0) internal successors, (7740), 15 states have internal predecessors, (7740), 0 states have call successors, (0), 0 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 16:40:36,333 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 516.0) internal successors, (7740), 15 states have internal predecessors, (7740), 0 states have call successors, (0), 0 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 16:40:36,334 INFO L175 Difference]: Start difference. First operand has 575 places, 542 transitions, 1794 flow. Second operand 14 states and 6188 transitions. [2022-11-21 16:40:36,334 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 581 places, 561 transitions, 2143 flow [2022-11-21 16:40:36,372 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 573 places, 561 transitions, 2064 flow, removed 30 selfloop flow, removed 8 redundant places. [2022-11-21 16:40:36,380 INFO L231 Difference]: Finished difference. Result has 578 places, 531 transitions, 1608 flow [2022-11-21 16:40:36,381 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=516, PETRI_DIFFERENCE_MINUEND_FLOW=1735, PETRI_DIFFERENCE_MINUEND_PLACES=560, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=542, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=538, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=1608, PETRI_PLACES=578, PETRI_TRANSITIONS=531} [2022-11-21 16:40:36,381 INFO L288 CegarLoopForPetriNet]: 463 programPoint places, 115 predicate places. [2022-11-21 16:40:36,382 INFO L495 AbstractCegarLoop]: Abstraction has has 578 places, 531 transitions, 1608 flow [2022-11-21 16:40:36,382 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 440.0) internal successors, (3960), 9 states have internal predecessors, (3960), 0 states have call successors, (0), 0 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 16:40:36,383 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 16:40:36,383 INFO L209 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:40:36,383 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2022-11-21 16:40:36,383 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-21 16:40:36,384 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:40:36,384 INFO L85 PathProgramCache]: Analyzing trace with hash 1841404034, now seen corresponding path program 9 times [2022-11-21 16:40:36,384 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:40:36,385 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [916923475] [2022-11-21 16:40:36,385 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:40:36,385 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:40:36,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:40:36,859 INFO L134 CoverageAnalysis]: Checked inductivity of 130 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 130 trivial. 0 not checked. [2022-11-21 16:40:36,860 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:40:36,860 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [916923475] [2022-11-21 16:40:36,860 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [916923475] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:40:36,860 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:40:36,860 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-11-21 16:40:36,861 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1466501592] [2022-11-21 16:40:36,861 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:40:36,862 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-21 16:40:36,862 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:40:36,862 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-21 16:40:36,862 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2022-11-21 16:40:36,866 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 436 out of 516 [2022-11-21 16:40:36,870 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 578 places, 531 transitions, 1608 flow. Second operand has 9 states, 9 states have (on average 440.0) internal successors, (3960), 9 states have internal predecessors, (3960), 0 states have call successors, (0), 0 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 16:40:36,870 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 16:40:36,870 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 436 of 516 [2022-11-21 16:40:36,870 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 16:40:38,138 INFO L130 PetriNetUnfolder]: 403/2772 cut-off events. [2022-11-21 16:40:38,138 INFO L131 PetriNetUnfolder]: For 3850/3884 co-relation queries the response was YES. [2022-11-21 16:40:38,179 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5380 conditions, 2772 events. 403/2772 cut-off events. For 3850/3884 co-relation queries the response was YES. Maximal size of possible extension queue 98. Compared 23422 event pairs, 244 based on Foata normal form. 3/2475 useless extension candidates. Maximal degree in co-relation 5318. Up to 587 conditions per place. [2022-11-21 16:40:38,185 INFO L137 encePairwiseOnDemand]: 505/516 looper letters, 76 selfloop transitions, 10 changer transitions 22/567 dead transitions. [2022-11-21 16:40:38,185 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 574 places, 567 transitions, 2138 flow [2022-11-21 16:40:38,186 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-11-21 16:40:38,186 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2022-11-21 16:40:38,192 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 7070 transitions. [2022-11-21 16:40:38,194 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8563468992248062 [2022-11-21 16:40:38,195 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 7070 transitions. [2022-11-21 16:40:38,195 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 7070 transitions. [2022-11-21 16:40:38,198 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 16:40:38,198 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 7070 transitions. [2022-11-21 16:40:38,207 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 441.875) internal successors, (7070), 16 states have internal predecessors, (7070), 0 states have call successors, (0), 0 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 16:40:38,217 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 516.0) internal successors, (8772), 17 states have internal predecessors, (8772), 0 states have call successors, (0), 0 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 16:40:38,219 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 516.0) internal successors, (8772), 17 states have internal predecessors, (8772), 0 states have call successors, (0), 0 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 16:40:38,220 INFO L175 Difference]: Start difference. First operand has 578 places, 531 transitions, 1608 flow. Second operand 16 states and 7070 transitions. [2022-11-21 16:40:38,220 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 574 places, 567 transitions, 2138 flow [2022-11-21 16:40:38,252 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 558 places, 567 transitions, 2040 flow, removed 26 selfloop flow, removed 16 redundant places. [2022-11-21 16:40:38,260 INFO L231 Difference]: Finished difference. Result has 569 places, 532 transitions, 1634 flow [2022-11-21 16:40:38,261 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=516, PETRI_DIFFERENCE_MINUEND_FLOW=1562, PETRI_DIFFERENCE_MINUEND_PLACES=543, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=531, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=521, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=1634, PETRI_PLACES=569, PETRI_TRANSITIONS=532} [2022-11-21 16:40:38,262 INFO L288 CegarLoopForPetriNet]: 463 programPoint places, 106 predicate places. [2022-11-21 16:40:38,262 INFO L495 AbstractCegarLoop]: Abstraction has has 569 places, 532 transitions, 1634 flow [2022-11-21 16:40:38,263 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 440.0) internal successors, (3960), 9 states have internal predecessors, (3960), 0 states have call successors, (0), 0 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 16:40:38,263 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 16:40:38,263 INFO L209 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:40:38,264 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2022-11-21 16:40:38,264 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-21 16:40:38,264 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:40:38,264 INFO L85 PathProgramCache]: Analyzing trace with hash 450390158, now seen corresponding path program 10 times [2022-11-21 16:40:38,265 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:40:38,265 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [335109554] [2022-11-21 16:40:38,265 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:40:38,265 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:40:38,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:40:38,775 INFO L134 CoverageAnalysis]: Checked inductivity of 130 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 130 trivial. 0 not checked. [2022-11-21 16:40:38,775 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:40:38,776 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [335109554] [2022-11-21 16:40:38,776 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [335109554] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:40:38,776 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:40:38,776 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-11-21 16:40:38,776 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [636216167] [2022-11-21 16:40:38,776 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:40:38,777 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-21 16:40:38,777 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:40:38,777 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-21 16:40:38,778 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2022-11-21 16:40:38,782 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 436 out of 516 [2022-11-21 16:40:38,785 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 569 places, 532 transitions, 1634 flow. Second operand has 9 states, 9 states have (on average 440.0) internal successors, (3960), 9 states have internal predecessors, (3960), 0 states have call successors, (0), 0 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 16:40:38,785 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 16:40:38,785 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 436 of 516 [2022-11-21 16:40:38,785 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 16:40:39,946 INFO L130 PetriNetUnfolder]: 379/2535 cut-off events. [2022-11-21 16:40:39,946 INFO L131 PetriNetUnfolder]: For 3088/3114 co-relation queries the response was YES. [2022-11-21 16:40:39,974 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4955 conditions, 2535 events. 379/2535 cut-off events. For 3088/3114 co-relation queries the response was YES. Maximal size of possible extension queue 97. Compared 21282 event pairs, 244 based on Foata normal form. 3/2265 useless extension candidates. Maximal degree in co-relation 4895. Up to 576 conditions per place. [2022-11-21 16:40:39,979 INFO L137 encePairwiseOnDemand]: 505/516 looper letters, 71 selfloop transitions, 2 changer transitions 22/554 dead transitions. [2022-11-21 16:40:39,979 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 572 places, 554 transitions, 1956 flow [2022-11-21 16:40:39,980 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-21 16:40:39,980 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2022-11-21 16:40:39,984 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 6189 transitions. [2022-11-21 16:40:39,985 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8567275747508306 [2022-11-21 16:40:39,986 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 6189 transitions. [2022-11-21 16:40:39,986 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 6189 transitions. [2022-11-21 16:40:39,988 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 16:40:39,988 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 6189 transitions. [2022-11-21 16:40:39,996 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 442.07142857142856) internal successors, (6189), 14 states have internal predecessors, (6189), 0 states have call successors, (0), 0 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 16:40:40,005 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 516.0) internal successors, (7740), 15 states have internal predecessors, (7740), 0 states have call successors, (0), 0 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 16:40:40,007 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 516.0) internal successors, (7740), 15 states have internal predecessors, (7740), 0 states have call successors, (0), 0 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 16:40:40,007 INFO L175 Difference]: Start difference. First operand has 569 places, 532 transitions, 1634 flow. Second operand 14 states and 6189 transitions. [2022-11-21 16:40:40,007 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 572 places, 554 transitions, 1956 flow [2022-11-21 16:40:40,036 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 561 places, 554 transitions, 1903 flow, removed 21 selfloop flow, removed 11 redundant places. [2022-11-21 16:40:40,043 INFO L231 Difference]: Finished difference. Result has 566 places, 521 transitions, 1480 flow [2022-11-21 16:40:40,044 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=516, PETRI_DIFFERENCE_MINUEND_FLOW=1597, PETRI_DIFFERENCE_MINUEND_PLACES=548, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=532, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=530, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=1480, PETRI_PLACES=566, PETRI_TRANSITIONS=521} [2022-11-21 16:40:40,045 INFO L288 CegarLoopForPetriNet]: 463 programPoint places, 103 predicate places. [2022-11-21 16:40:40,045 INFO L495 AbstractCegarLoop]: Abstraction has has 566 places, 521 transitions, 1480 flow [2022-11-21 16:40:40,046 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 440.0) internal successors, (3960), 9 states have internal predecessors, (3960), 0 states have call successors, (0), 0 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 16:40:40,046 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 16:40:40,046 INFO L209 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:40:40,047 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2022-11-21 16:40:40,047 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-21 16:40:40,047 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:40:40,047 INFO L85 PathProgramCache]: Analyzing trace with hash -395595517, now seen corresponding path program 1 times [2022-11-21 16:40:40,048 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:40:40,048 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1666800595] [2022-11-21 16:40:40,048 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:40:40,048 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:40:40,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:40:40,314 INFO L134 CoverageAnalysis]: Checked inductivity of 130 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 130 trivial. 0 not checked. [2022-11-21 16:40:40,315 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:40:40,315 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1666800595] [2022-11-21 16:40:40,315 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1666800595] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:40:40,315 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:40:40,316 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-21 16:40:40,316 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [906408125] [2022-11-21 16:40:40,316 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:40:40,317 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-21 16:40:40,317 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:40:40,317 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-21 16:40:40,317 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-21 16:40:40,319 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 472 out of 516 [2022-11-21 16:40:40,320 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 566 places, 521 transitions, 1480 flow. Second operand has 3 states, 3 states have (on average 475.0) internal successors, (1425), 3 states have internal predecessors, (1425), 0 states have call successors, (0), 0 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 16:40:40,321 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 16:40:40,321 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 472 of 516 [2022-11-21 16:40:40,321 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 16:40:40,893 INFO L130 PetriNetUnfolder]: 173/2883 cut-off events. [2022-11-21 16:40:40,893 INFO L131 PetriNetUnfolder]: For 1717/1819 co-relation queries the response was YES. [2022-11-21 16:40:40,913 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4236 conditions, 2883 events. 173/2883 cut-off events. For 1717/1819 co-relation queries the response was YES. Maximal size of possible extension queue 55. Compared 23393 event pairs, 36 based on Foata normal form. 2/2624 useless extension candidates. Maximal degree in co-relation 4180. Up to 65 conditions per place. [2022-11-21 16:40:40,918 INFO L137 encePairwiseOnDemand]: 511/516 looper letters, 21 selfloop transitions, 4 changer transitions 4/528 dead transitions. [2022-11-21 16:40:40,918 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 549 places, 528 transitions, 1547 flow [2022-11-21 16:40:40,918 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-21 16:40:40,918 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-21 16:40:40,919 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1442 transitions. [2022-11-21 16:40:40,920 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9315245478036176 [2022-11-21 16:40:40,920 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1442 transitions. [2022-11-21 16:40:40,920 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1442 transitions. [2022-11-21 16:40:40,920 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 16:40:40,920 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1442 transitions. [2022-11-21 16:40:40,921 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 480.6666666666667) internal successors, (1442), 3 states have internal predecessors, (1442), 0 states have call successors, (0), 0 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 16:40:40,923 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 516.0) internal successors, (2064), 4 states have internal predecessors, (2064), 0 states have call successors, (0), 0 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 16:40:40,924 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 516.0) internal successors, (2064), 4 states have internal predecessors, (2064), 0 states have call successors, (0), 0 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 16:40:40,924 INFO L175 Difference]: Start difference. First operand has 566 places, 521 transitions, 1480 flow. Second operand 3 states and 1442 transitions. [2022-11-21 16:40:40,924 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 549 places, 528 transitions, 1547 flow [2022-11-21 16:40:40,946 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 535 places, 528 transitions, 1511 flow, removed 15 selfloop flow, removed 14 redundant places. [2022-11-21 16:40:40,951 INFO L231 Difference]: Finished difference. Result has 536 places, 518 transitions, 1446 flow [2022-11-21 16:40:40,952 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=516, PETRI_DIFFERENCE_MINUEND_FLOW=1444, PETRI_DIFFERENCE_MINUEND_PLACES=533, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=521, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=517, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1446, PETRI_PLACES=536, PETRI_TRANSITIONS=518} [2022-11-21 16:40:40,953 INFO L288 CegarLoopForPetriNet]: 463 programPoint places, 73 predicate places. [2022-11-21 16:40:40,953 INFO L495 AbstractCegarLoop]: Abstraction has has 536 places, 518 transitions, 1446 flow [2022-11-21 16:40:40,953 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 475.0) internal successors, (1425), 3 states have internal predecessors, (1425), 0 states have call successors, (0), 0 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 16:40:40,953 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 16:40:40,954 INFO L209 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:40:40,954 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2022-11-21 16:40:40,954 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-21 16:40:40,955 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:40:40,955 INFO L85 PathProgramCache]: Analyzing trace with hash 865598484, now seen corresponding path program 1 times [2022-11-21 16:40:40,955 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:40:40,955 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2013502086] [2022-11-21 16:40:40,955 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:40:40,956 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:40:40,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:40:41,125 INFO L134 CoverageAnalysis]: Checked inductivity of 130 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 130 trivial. 0 not checked. [2022-11-21 16:40:41,125 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:40:41,125 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2013502086] [2022-11-21 16:40:41,126 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2013502086] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:40:41,126 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:40:41,126 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-21 16:40:41,126 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [587811050] [2022-11-21 16:40:41,126 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:40:41,127 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-21 16:40:41,127 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:40:41,127 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-21 16:40:41,127 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-21 16:40:41,129 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 472 out of 516 [2022-11-21 16:40:41,130 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 536 places, 518 transitions, 1446 flow. Second operand has 3 states, 3 states have (on average 475.0) internal successors, (1425), 3 states have internal predecessors, (1425), 0 states have call successors, (0), 0 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 16:40:41,130 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 16:40:41,130 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 472 of 516 [2022-11-21 16:40:41,130 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 16:40:41,654 INFO L130 PetriNetUnfolder]: 157/1668 cut-off events. [2022-11-21 16:40:41,654 INFO L131 PetriNetUnfolder]: For 751/833 co-relation queries the response was YES. [2022-11-21 16:40:41,679 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2361 conditions, 1668 events. 157/1668 cut-off events. For 751/833 co-relation queries the response was YES. Maximal size of possible extension queue 64. Compared 11259 event pairs, 69 based on Foata normal form. 1/1485 useless extension candidates. Maximal degree in co-relation 2315. Up to 130 conditions per place. [2022-11-21 16:40:41,684 INFO L137 encePairwiseOnDemand]: 511/516 looper letters, 20 selfloop transitions, 4 changer transitions 0/524 dead transitions. [2022-11-21 16:40:41,684 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 538 places, 524 transitions, 1508 flow [2022-11-21 16:40:41,684 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-21 16:40:41,685 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-21 16:40:41,686 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1441 transitions. [2022-11-21 16:40:41,687 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9308785529715762 [2022-11-21 16:40:41,687 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1441 transitions. [2022-11-21 16:40:41,687 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1441 transitions. [2022-11-21 16:40:41,687 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 16:40:41,688 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1441 transitions. [2022-11-21 16:40:41,690 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 480.3333333333333) internal successors, (1441), 3 states have internal predecessors, (1441), 0 states have call successors, (0), 0 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 16:40:41,692 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 516.0) internal successors, (2064), 4 states have internal predecessors, (2064), 0 states have call successors, (0), 0 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 16:40:41,692 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 516.0) internal successors, (2064), 4 states have internal predecessors, (2064), 0 states have call successors, (0), 0 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 16:40:41,692 INFO L175 Difference]: Start difference. First operand has 536 places, 518 transitions, 1446 flow. Second operand 3 states and 1441 transitions. [2022-11-21 16:40:41,693 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 538 places, 524 transitions, 1508 flow [2022-11-21 16:40:41,701 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 528 places, 524 transitions, 1472 flow, removed 8 selfloop flow, removed 10 redundant places. [2022-11-21 16:40:41,707 INFO L231 Difference]: Finished difference. Result has 529 places, 519 transitions, 1428 flow [2022-11-21 16:40:41,708 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=516, PETRI_DIFFERENCE_MINUEND_FLOW=1410, PETRI_DIFFERENCE_MINUEND_PLACES=526, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=518, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=514, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1428, PETRI_PLACES=529, PETRI_TRANSITIONS=519} [2022-11-21 16:40:41,712 INFO L288 CegarLoopForPetriNet]: 463 programPoint places, 66 predicate places. [2022-11-21 16:40:41,713 INFO L495 AbstractCegarLoop]: Abstraction has has 529 places, 519 transitions, 1428 flow [2022-11-21 16:40:41,713 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 475.0) internal successors, (1425), 3 states have internal predecessors, (1425), 0 states have call successors, (0), 0 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 16:40:41,713 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 16:40:41,714 INFO L209 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:40:41,714 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2022-11-21 16:40:41,714 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-21 16:40:41,714 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:40:41,715 INFO L85 PathProgramCache]: Analyzing trace with hash 300533809, now seen corresponding path program 1 times [2022-11-21 16:40:41,715 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:40:41,715 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [157893557] [2022-11-21 16:40:41,715 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:40:41,715 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:40:41,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:40:41,850 INFO L134 CoverageAnalysis]: Checked inductivity of 130 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 130 trivial. 0 not checked. [2022-11-21 16:40:41,850 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:40:41,851 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [157893557] [2022-11-21 16:40:41,851 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [157893557] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:40:41,851 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:40:41,851 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-21 16:40:41,851 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [985809938] [2022-11-21 16:40:41,851 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:40:41,852 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-21 16:40:41,852 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:40:41,853 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-21 16:40:41,853 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-21 16:40:41,854 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 470 out of 516 [2022-11-21 16:40:41,855 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 529 places, 519 transitions, 1428 flow. Second operand has 3 states, 3 states have (on average 474.3333333333333) internal successors, (1423), 3 states have internal predecessors, (1423), 0 states have call successors, (0), 0 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 16:40:41,855 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 16:40:41,855 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 470 of 516 [2022-11-21 16:40:41,856 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 16:40:42,351 INFO L130 PetriNetUnfolder]: 160/2451 cut-off events. [2022-11-21 16:40:42,351 INFO L131 PetriNetUnfolder]: For 1121/1214 co-relation queries the response was YES. [2022-11-21 16:40:42,368 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3611 conditions, 2451 events. 160/2451 cut-off events. For 1121/1214 co-relation queries the response was YES. Maximal size of possible extension queue 47. Compared 18875 event pairs, 60 based on Foata normal form. 9/2272 useless extension candidates. Maximal degree in co-relation 3572. Up to 98 conditions per place. [2022-11-21 16:40:42,373 INFO L137 encePairwiseOnDemand]: 509/516 looper letters, 26 selfloop transitions, 5 changer transitions 0/530 dead transitions. [2022-11-21 16:40:42,373 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 531 places, 530 transitions, 1518 flow [2022-11-21 16:40:42,373 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-21 16:40:42,373 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-21 16:40:42,374 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1443 transitions. [2022-11-21 16:40:42,375 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9321705426356589 [2022-11-21 16:40:42,375 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1443 transitions. [2022-11-21 16:40:42,375 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1443 transitions. [2022-11-21 16:40:42,375 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 16:40:42,375 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1443 transitions. [2022-11-21 16:40:42,376 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 481.0) internal successors, (1443), 3 states have internal predecessors, (1443), 0 states have call successors, (0), 0 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 16:40:42,377 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 516.0) internal successors, (2064), 4 states have internal predecessors, (2064), 0 states have call successors, (0), 0 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 16:40:42,378 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 516.0) internal successors, (2064), 4 states have internal predecessors, (2064), 0 states have call successors, (0), 0 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 16:40:42,378 INFO L175 Difference]: Start difference. First operand has 529 places, 519 transitions, 1428 flow. Second operand 3 states and 1443 transitions. [2022-11-21 16:40:42,378 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 531 places, 530 transitions, 1518 flow [2022-11-21 16:40:42,389 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 530 places, 530 transitions, 1514 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-21 16:40:42,395 INFO L231 Difference]: Finished difference. Result has 532 places, 522 transitions, 1463 flow [2022-11-21 16:40:42,396 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=516, PETRI_DIFFERENCE_MINUEND_FLOW=1424, PETRI_DIFFERENCE_MINUEND_PLACES=528, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=519, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=514, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1463, PETRI_PLACES=532, PETRI_TRANSITIONS=522} [2022-11-21 16:40:42,397 INFO L288 CegarLoopForPetriNet]: 463 programPoint places, 69 predicate places. [2022-11-21 16:40:42,397 INFO L495 AbstractCegarLoop]: Abstraction has has 532 places, 522 transitions, 1463 flow [2022-11-21 16:40:42,398 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 474.3333333333333) internal successors, (1423), 3 states have internal predecessors, (1423), 0 states have call successors, (0), 0 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 16:40:42,398 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 16:40:42,398 INFO L209 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:40:42,398 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2022-11-21 16:40:42,398 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-21 16:40:42,399 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:40:42,399 INFO L85 PathProgramCache]: Analyzing trace with hash 1895171101, now seen corresponding path program 2 times [2022-11-21 16:40:42,399 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:40:42,399 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1848855889] [2022-11-21 16:40:42,400 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:40:42,400 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:40:42,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:40:42,502 INFO L134 CoverageAnalysis]: Checked inductivity of 130 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 130 trivial. 0 not checked. [2022-11-21 16:40:42,502 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:40:42,503 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1848855889] [2022-11-21 16:40:42,503 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1848855889] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:40:42,503 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:40:42,503 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-21 16:40:42,503 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [279625630] [2022-11-21 16:40:42,503 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:40:42,504 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-21 16:40:42,504 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:40:42,504 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-21 16:40:42,505 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-21 16:40:42,506 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 470 out of 516 [2022-11-21 16:40:42,507 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 532 places, 522 transitions, 1463 flow. Second operand has 3 states, 3 states have (on average 474.3333333333333) internal successors, (1423), 3 states have internal predecessors, (1423), 0 states have call successors, (0), 0 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 16:40:42,507 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 16:40:42,507 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 470 of 516 [2022-11-21 16:40:42,507 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 16:40:43,080 INFO L130 PetriNetUnfolder]: 156/2442 cut-off events. [2022-11-21 16:40:43,080 INFO L131 PetriNetUnfolder]: For 952/1033 co-relation queries the response was YES. [2022-11-21 16:40:43,099 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3443 conditions, 2442 events. 156/2442 cut-off events. For 952/1033 co-relation queries the response was YES. Maximal size of possible extension queue 46. Compared 18655 event pairs, 61 based on Foata normal form. 8/2258 useless extension candidates. Maximal degree in co-relation 3403. Up to 134 conditions per place. [2022-11-21 16:40:43,106 INFO L137 encePairwiseOnDemand]: 512/516 looper letters, 26 selfloop transitions, 2 changer transitions 3/530 dead transitions. [2022-11-21 16:40:43,106 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 534 places, 530 transitions, 1544 flow [2022-11-21 16:40:43,107 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-21 16:40:43,107 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-21 16:40:43,109 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1440 transitions. [2022-11-21 16:40:43,110 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9302325581395349 [2022-11-21 16:40:43,110 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1440 transitions. [2022-11-21 16:40:43,110 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1440 transitions. [2022-11-21 16:40:43,111 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 16:40:43,111 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1440 transitions. [2022-11-21 16:40:43,113 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 480.0) internal successors, (1440), 3 states have internal predecessors, (1440), 0 states have call successors, (0), 0 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 16:40:43,115 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 516.0) internal successors, (2064), 4 states have internal predecessors, (2064), 0 states have call successors, (0), 0 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 16:40:43,116 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 516.0) internal successors, (2064), 4 states have internal predecessors, (2064), 0 states have call successors, (0), 0 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 16:40:43,116 INFO L175 Difference]: Start difference. First operand has 532 places, 522 transitions, 1463 flow. Second operand 3 states and 1440 transitions. [2022-11-21 16:40:43,116 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 534 places, 530 transitions, 1544 flow [2022-11-21 16:40:43,130 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 528 places, 530 transitions, 1504 flow, removed 15 selfloop flow, removed 6 redundant places. [2022-11-21 16:40:43,138 INFO L231 Difference]: Finished difference. Result has 529 places, 522 transitions, 1433 flow [2022-11-21 16:40:43,138 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=516, PETRI_DIFFERENCE_MINUEND_FLOW=1423, PETRI_DIFFERENCE_MINUEND_PLACES=526, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=522, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=520, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1433, PETRI_PLACES=529, PETRI_TRANSITIONS=522} [2022-11-21 16:40:43,139 INFO L288 CegarLoopForPetriNet]: 463 programPoint places, 66 predicate places. [2022-11-21 16:40:43,139 INFO L495 AbstractCegarLoop]: Abstraction has has 529 places, 522 transitions, 1433 flow [2022-11-21 16:40:43,140 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 474.3333333333333) internal successors, (1423), 3 states have internal predecessors, (1423), 0 states have call successors, (0), 0 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 16:40:43,140 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 16:40:43,140 INFO L209 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:40:43,140 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2022-11-21 16:40:43,141 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-21 16:40:43,141 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:40:43,141 INFO L85 PathProgramCache]: Analyzing trace with hash -564885053, now seen corresponding path program 1 times [2022-11-21 16:40:43,142 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:40:43,142 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [788457544] [2022-11-21 16:40:43,142 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:40:43,142 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:40:43,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:40:43,260 INFO L134 CoverageAnalysis]: Checked inductivity of 130 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 130 trivial. 0 not checked. [2022-11-21 16:40:43,260 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:40:43,260 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [788457544] [2022-11-21 16:40:43,261 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [788457544] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:40:43,261 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:40:43,261 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-21 16:40:43,261 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1390264173] [2022-11-21 16:40:43,261 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:40:43,262 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-21 16:40:43,262 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:40:43,262 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-21 16:40:43,263 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-21 16:40:43,264 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 470 out of 516 [2022-11-21 16:40:43,265 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 529 places, 522 transitions, 1433 flow. Second operand has 3 states, 3 states have (on average 474.3333333333333) internal successors, (1423), 3 states have internal predecessors, (1423), 0 states have call successors, (0), 0 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 16:40:43,265 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 16:40:43,266 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 470 of 516 [2022-11-21 16:40:43,266 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 16:40:43,926 INFO L130 PetriNetUnfolder]: 139/2254 cut-off events. [2022-11-21 16:40:43,927 INFO L131 PetriNetUnfolder]: For 735/802 co-relation queries the response was YES. [2022-11-21 16:40:43,940 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3114 conditions, 2254 events. 139/2254 cut-off events. For 735/802 co-relation queries the response was YES. Maximal size of possible extension queue 42. Compared 16627 event pairs, 45 based on Foata normal form. 7/2085 useless extension candidates. Maximal degree in co-relation 3077. Up to 90 conditions per place. [2022-11-21 16:40:43,944 INFO L137 encePairwiseOnDemand]: 509/516 looper letters, 29 selfloop transitions, 5 changer transitions 1/534 dead transitions. [2022-11-21 16:40:43,944 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 531 places, 534 transitions, 1546 flow [2022-11-21 16:40:43,944 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-21 16:40:43,944 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-21 16:40:43,946 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1443 transitions. [2022-11-21 16:40:43,946 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9321705426356589 [2022-11-21 16:40:43,946 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1443 transitions. [2022-11-21 16:40:43,946 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1443 transitions. [2022-11-21 16:40:43,947 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 16:40:43,947 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1443 transitions. [2022-11-21 16:40:43,948 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 481.0) internal successors, (1443), 3 states have internal predecessors, (1443), 0 states have call successors, (0), 0 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 16:40:43,950 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 516.0) internal successors, (2064), 4 states have internal predecessors, (2064), 0 states have call successors, (0), 0 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 16:40:43,950 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 516.0) internal successors, (2064), 4 states have internal predecessors, (2064), 0 states have call successors, (0), 0 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 16:40:43,950 INFO L175 Difference]: Start difference. First operand has 529 places, 522 transitions, 1433 flow. Second operand 3 states and 1443 transitions. [2022-11-21 16:40:43,950 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 531 places, 534 transitions, 1546 flow [2022-11-21 16:40:43,959 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 529 places, 534 transitions, 1537 flow, removed 3 selfloop flow, removed 2 redundant places. [2022-11-21 16:40:43,966 INFO L231 Difference]: Finished difference. Result has 531 places, 524 transitions, 1457 flow [2022-11-21 16:40:43,967 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=516, PETRI_DIFFERENCE_MINUEND_FLOW=1425, PETRI_DIFFERENCE_MINUEND_PLACES=527, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=522, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=517, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1457, PETRI_PLACES=531, PETRI_TRANSITIONS=524} [2022-11-21 16:40:43,968 INFO L288 CegarLoopForPetriNet]: 463 programPoint places, 68 predicate places. [2022-11-21 16:40:43,968 INFO L495 AbstractCegarLoop]: Abstraction has has 531 places, 524 transitions, 1457 flow [2022-11-21 16:40:43,968 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 474.3333333333333) internal successors, (1423), 3 states have internal predecessors, (1423), 0 states have call successors, (0), 0 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 16:40:43,968 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 16:40:43,969 INFO L209 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:40:43,969 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2022-11-21 16:40:43,969 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-21 16:40:43,969 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:40:43,970 INFO L85 PathProgramCache]: Analyzing trace with hash -1344693549, now seen corresponding path program 2 times [2022-11-21 16:40:43,970 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:40:43,970 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [101125520] [2022-11-21 16:40:43,970 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:40:43,970 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:40:44,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:40:44,078 INFO L134 CoverageAnalysis]: Checked inductivity of 130 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 130 trivial. 0 not checked. [2022-11-21 16:40:44,078 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:40:44,078 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [101125520] [2022-11-21 16:40:44,078 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [101125520] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:40:44,079 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:40:44,079 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-21 16:40:44,079 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1869347160] [2022-11-21 16:40:44,079 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:40:44,080 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-21 16:40:44,080 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:40:44,082 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-21 16:40:44,082 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-21 16:40:44,083 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 470 out of 516 [2022-11-21 16:40:44,085 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 531 places, 524 transitions, 1457 flow. Second operand has 3 states, 3 states have (on average 474.3333333333333) internal successors, (1423), 3 states have internal predecessors, (1423), 0 states have call successors, (0), 0 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 16:40:44,085 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 16:40:44,085 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 470 of 516 [2022-11-21 16:40:44,085 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 16:40:44,653 INFO L130 PetriNetUnfolder]: 122/2108 cut-off events. [2022-11-21 16:40:44,653 INFO L131 PetriNetUnfolder]: For 555/620 co-relation queries the response was YES. [2022-11-21 16:40:44,670 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2893 conditions, 2108 events. 122/2108 cut-off events. For 555/620 co-relation queries the response was YES. Maximal size of possible extension queue 41. Compared 15078 event pairs, 44 based on Foata normal form. 3/1949 useless extension candidates. Maximal degree in co-relation 2856. Up to 119 conditions per place. [2022-11-21 16:40:44,674 INFO L137 encePairwiseOnDemand]: 512/516 looper letters, 27 selfloop transitions, 2 changer transitions 4/530 dead transitions. [2022-11-21 16:40:44,674 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 533 places, 530 transitions, 1534 flow [2022-11-21 16:40:44,675 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-21 16:40:44,675 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-21 16:40:44,676 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1440 transitions. [2022-11-21 16:40:44,676 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9302325581395349 [2022-11-21 16:40:44,676 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1440 transitions. [2022-11-21 16:40:44,676 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1440 transitions. [2022-11-21 16:40:44,677 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 16:40:44,677 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1440 transitions. [2022-11-21 16:40:44,678 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 480.0) internal successors, (1440), 3 states have internal predecessors, (1440), 0 states have call successors, (0), 0 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 16:40:44,679 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 516.0) internal successors, (2064), 4 states have internal predecessors, (2064), 0 states have call successors, (0), 0 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 16:40:44,680 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 516.0) internal successors, (2064), 4 states have internal predecessors, (2064), 0 states have call successors, (0), 0 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 16:40:44,680 INFO L175 Difference]: Start difference. First operand has 531 places, 524 transitions, 1457 flow. Second operand 3 states and 1440 transitions. [2022-11-21 16:40:44,680 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 533 places, 530 transitions, 1534 flow [2022-11-21 16:40:44,688 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 528 places, 530 transitions, 1502 flow, removed 8 selfloop flow, removed 5 redundant places. [2022-11-21 16:40:44,695 INFO L231 Difference]: Finished difference. Result has 529 places, 521 transitions, 1416 flow [2022-11-21 16:40:44,695 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=516, PETRI_DIFFERENCE_MINUEND_FLOW=1415, PETRI_DIFFERENCE_MINUEND_PLACES=526, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=522, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=520, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1416, PETRI_PLACES=529, PETRI_TRANSITIONS=521} [2022-11-21 16:40:44,696 INFO L288 CegarLoopForPetriNet]: 463 programPoint places, 66 predicate places. [2022-11-21 16:40:44,696 INFO L495 AbstractCegarLoop]: Abstraction has has 529 places, 521 transitions, 1416 flow [2022-11-21 16:40:44,697 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 474.3333333333333) internal successors, (1423), 3 states have internal predecessors, (1423), 0 states have call successors, (0), 0 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 16:40:44,697 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 16:40:44,697 INFO L209 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:40:44,698 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2022-11-21 16:40:44,698 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-21 16:40:44,698 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:40:44,698 INFO L85 PathProgramCache]: Analyzing trace with hash -2949800, now seen corresponding path program 1 times [2022-11-21 16:40:44,699 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:40:44,699 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1065409675] [2022-11-21 16:40:44,699 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:40:44,699 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:40:44,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:40:45,073 INFO L134 CoverageAnalysis]: Checked inductivity of 130 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 130 trivial. 0 not checked. [2022-11-21 16:40:45,073 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:40:45,074 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1065409675] [2022-11-21 16:40:45,074 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1065409675] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:40:45,074 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:40:45,074 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-21 16:40:45,074 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [794786084] [2022-11-21 16:40:45,075 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:40:45,075 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-21 16:40:45,075 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:40:45,076 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-21 16:40:45,076 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-21 16:40:45,078 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 432 out of 516 [2022-11-21 16:40:45,084 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 529 places, 521 transitions, 1416 flow. Second operand has 5 states, 5 states have (on average 437.2) internal successors, (2186), 5 states have internal predecessors, (2186), 0 states have call successors, (0), 0 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 16:40:45,085 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 16:40:45,085 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 432 of 516 [2022-11-21 16:40:45,085 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 16:40:46,118 INFO L130 PetriNetUnfolder]: 469/3715 cut-off events. [2022-11-21 16:40:46,119 INFO L131 PetriNetUnfolder]: For 1915/2057 co-relation queries the response was YES. [2022-11-21 16:40:46,148 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5645 conditions, 3715 events. 469/3715 cut-off events. For 1915/2057 co-relation queries the response was YES. Maximal size of possible extension queue 82. Compared 32466 event pairs, 108 based on Foata normal form. 89/3516 useless extension candidates. Maximal degree in co-relation 5608. Up to 565 conditions per place. [2022-11-21 16:40:46,155 INFO L137 encePairwiseOnDemand]: 508/516 looper letters, 79 selfloop transitions, 6 changer transitions 7/551 dead transitions. [2022-11-21 16:40:46,155 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 534 places, 551 transitions, 1747 flow [2022-11-21 16:40:46,156 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-21 16:40:46,156 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-11-21 16:40:46,158 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 2680 transitions. [2022-11-21 16:40:46,160 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8656330749354005 [2022-11-21 16:40:46,160 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 2680 transitions. [2022-11-21 16:40:46,160 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 2680 transitions. [2022-11-21 16:40:46,161 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 16:40:46,161 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 2680 transitions. [2022-11-21 16:40:46,164 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 446.6666666666667) internal successors, (2680), 6 states have internal predecessors, (2680), 0 states have call successors, (0), 0 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 16:40:46,168 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 516.0) internal successors, (3612), 7 states have internal predecessors, (3612), 0 states have call successors, (0), 0 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 16:40:46,169 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 516.0) internal successors, (3612), 7 states have internal predecessors, (3612), 0 states have call successors, (0), 0 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 16:40:46,169 INFO L175 Difference]: Start difference. First operand has 529 places, 521 transitions, 1416 flow. Second operand 6 states and 2680 transitions. [2022-11-21 16:40:46,169 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 534 places, 551 transitions, 1747 flow [2022-11-21 16:40:46,182 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 533 places, 551 transitions, 1740 flow, removed 1 selfloop flow, removed 1 redundant places. [2022-11-21 16:40:46,190 INFO L231 Difference]: Finished difference. Result has 534 places, 521 transitions, 1429 flow [2022-11-21 16:40:46,191 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=516, PETRI_DIFFERENCE_MINUEND_FLOW=1412, PETRI_DIFFERENCE_MINUEND_PLACES=528, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=521, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=515, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1429, PETRI_PLACES=534, PETRI_TRANSITIONS=521} [2022-11-21 16:40:46,191 INFO L288 CegarLoopForPetriNet]: 463 programPoint places, 71 predicate places. [2022-11-21 16:40:46,191 INFO L495 AbstractCegarLoop]: Abstraction has has 534 places, 521 transitions, 1429 flow [2022-11-21 16:40:46,192 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 437.2) internal successors, (2186), 5 states have internal predecessors, (2186), 0 states have call successors, (0), 0 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 16:40:46,192 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 16:40:46,193 INFO L209 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:40:46,193 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2022-11-21 16:40:46,193 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-21 16:40:46,194 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:40:46,194 INFO L85 PathProgramCache]: Analyzing trace with hash 2043592293, now seen corresponding path program 1 times [2022-11-21 16:40:46,194 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:40:46,194 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1794611930] [2022-11-21 16:40:46,195 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:40:46,195 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:40:46,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:40:46,627 INFO L134 CoverageAnalysis]: Checked inductivity of 130 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 130 trivial. 0 not checked. [2022-11-21 16:40:46,627 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:40:46,627 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1794611930] [2022-11-21 16:40:46,628 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1794611930] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:40:46,628 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:40:46,628 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-21 16:40:46,628 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1407159540] [2022-11-21 16:40:46,629 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:40:46,631 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-21 16:40:46,631 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:40:46,632 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-21 16:40:46,632 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-21 16:40:46,635 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 432 out of 516 [2022-11-21 16:40:46,637 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 534 places, 521 transitions, 1429 flow. Second operand has 5 states, 5 states have (on average 437.2) internal successors, (2186), 5 states have internal predecessors, (2186), 0 states have call successors, (0), 0 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 16:40:46,638 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 16:40:46,638 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 432 of 516 [2022-11-21 16:40:46,638 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 16:40:48,097 INFO L130 PetriNetUnfolder]: 862/5277 cut-off events. [2022-11-21 16:40:48,097 INFO L131 PetriNetUnfolder]: For 2127/2127 co-relation queries the response was YES. [2022-11-21 16:40:48,145 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8104 conditions, 5277 events. 862/5277 cut-off events. For 2127/2127 co-relation queries the response was YES. Maximal size of possible extension queue 147. Compared 51457 event pairs, 465 based on Foata normal form. 0/4720 useless extension candidates. Maximal degree in co-relation 8066. Up to 1052 conditions per place. [2022-11-21 16:40:48,156 INFO L137 encePairwiseOnDemand]: 501/516 looper letters, 62 selfloop transitions, 15 changer transitions 19/555 dead transitions. [2022-11-21 16:40:48,156 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 540 places, 555 transitions, 1776 flow [2022-11-21 16:40:48,157 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-21 16:40:48,157 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-21 16:40:48,159 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 3115 transitions. [2022-11-21 16:40:48,160 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8624031007751938 [2022-11-21 16:40:48,160 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 3115 transitions. [2022-11-21 16:40:48,161 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 3115 transitions. [2022-11-21 16:40:48,162 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 16:40:48,162 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 3115 transitions. [2022-11-21 16:40:48,166 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 445.0) internal successors, (3115), 7 states have internal predecessors, (3115), 0 states have call successors, (0), 0 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 16:40:48,170 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 516.0) internal successors, (4128), 8 states have internal predecessors, (4128), 0 states have call successors, (0), 0 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 16:40:48,171 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 516.0) internal successors, (4128), 8 states have internal predecessors, (4128), 0 states have call successors, (0), 0 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 16:40:48,172 INFO L175 Difference]: Start difference. First operand has 534 places, 521 transitions, 1429 flow. Second operand 7 states and 3115 transitions. [2022-11-21 16:40:48,172 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 540 places, 555 transitions, 1776 flow [2022-11-21 16:40:48,187 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 537 places, 555 transitions, 1762 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-11-21 16:40:48,194 INFO L231 Difference]: Finished difference. Result has 541 places, 527 transitions, 1506 flow [2022-11-21 16:40:48,195 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=516, PETRI_DIFFERENCE_MINUEND_FLOW=1421, PETRI_DIFFERENCE_MINUEND_PLACES=531, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=521, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=508, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1506, PETRI_PLACES=541, PETRI_TRANSITIONS=527} [2022-11-21 16:40:48,196 INFO L288 CegarLoopForPetriNet]: 463 programPoint places, 78 predicate places. [2022-11-21 16:40:48,196 INFO L495 AbstractCegarLoop]: Abstraction has has 541 places, 527 transitions, 1506 flow [2022-11-21 16:40:48,197 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 437.2) internal successors, (2186), 5 states have internal predecessors, (2186), 0 states have call successors, (0), 0 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 16:40:48,197 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 16:40:48,197 INFO L209 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:40:48,198 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2022-11-21 16:40:48,198 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-21 16:40:48,198 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:40:48,199 INFO L85 PathProgramCache]: Analyzing trace with hash -1104316968, now seen corresponding path program 2 times [2022-11-21 16:40:48,199 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:40:48,199 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [874877509] [2022-11-21 16:40:48,199 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:40:48,199 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:40:48,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:40:48,453 INFO L134 CoverageAnalysis]: Checked inductivity of 130 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 130 trivial. 0 not checked. [2022-11-21 16:40:48,454 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:40:48,454 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [874877509] [2022-11-21 16:40:48,454 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [874877509] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:40:48,454 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:40:48,454 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-21 16:40:48,455 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1261371061] [2022-11-21 16:40:48,455 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:40:48,455 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-21 16:40:48,455 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:40:48,456 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-21 16:40:48,456 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-21 16:40:48,458 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 432 out of 516 [2022-11-21 16:40:48,459 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 541 places, 527 transitions, 1506 flow. Second operand has 5 states, 5 states have (on average 437.2) internal successors, (2186), 5 states have internal predecessors, (2186), 0 states have call successors, (0), 0 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 16:40:48,459 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 16:40:48,460 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 432 of 516 [2022-11-21 16:40:48,460 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 16:40:49,427 INFO L130 PetriNetUnfolder]: 461/3519 cut-off events. [2022-11-21 16:40:49,427 INFO L131 PetriNetUnfolder]: For 1628/2030 co-relation queries the response was YES. [2022-11-21 16:40:49,443 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5798 conditions, 3519 events. 461/3519 cut-off events. For 1628/2030 co-relation queries the response was YES. Maximal size of possible extension queue 91. Compared 30472 event pairs, 269 based on Foata normal form. 22/3341 useless extension candidates. Maximal degree in co-relation 5756. Up to 695 conditions per place. [2022-11-21 16:40:49,448 INFO L137 encePairwiseOnDemand]: 501/516 looper letters, 65 selfloop transitions, 15 changer transitions 16/559 dead transitions. [2022-11-21 16:40:49,448 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 546 places, 559 transitions, 1858 flow [2022-11-21 16:40:49,448 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-21 16:40:49,448 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-21 16:40:49,450 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 3113 transitions. [2022-11-21 16:40:49,451 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8618493909191584 [2022-11-21 16:40:49,451 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 3113 transitions. [2022-11-21 16:40:49,451 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 3113 transitions. [2022-11-21 16:40:49,452 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 16:40:49,452 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 3113 transitions. [2022-11-21 16:40:49,456 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 444.7142857142857) internal successors, (3113), 7 states have internal predecessors, (3113), 0 states have call successors, (0), 0 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 16:40:49,459 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 516.0) internal successors, (4128), 8 states have internal predecessors, (4128), 0 states have call successors, (0), 0 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 16:40:49,460 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 516.0) internal successors, (4128), 8 states have internal predecessors, (4128), 0 states have call successors, (0), 0 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 16:40:49,460 INFO L175 Difference]: Start difference. First operand has 541 places, 527 transitions, 1506 flow. Second operand 7 states and 3113 transitions. [2022-11-21 16:40:49,461 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 546 places, 559 transitions, 1858 flow [2022-11-21 16:40:49,474 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 545 places, 559 transitions, 1856 flow, removed 1 selfloop flow, removed 1 redundant places. [2022-11-21 16:40:49,481 INFO L231 Difference]: Finished difference. Result has 549 places, 533 transitions, 1591 flow [2022-11-21 16:40:49,482 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=516, PETRI_DIFFERENCE_MINUEND_FLOW=1504, PETRI_DIFFERENCE_MINUEND_PLACES=539, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=527, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=514, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1591, PETRI_PLACES=549, PETRI_TRANSITIONS=533} [2022-11-21 16:40:49,483 INFO L288 CegarLoopForPetriNet]: 463 programPoint places, 86 predicate places. [2022-11-21 16:40:49,483 INFO L495 AbstractCegarLoop]: Abstraction has has 549 places, 533 transitions, 1591 flow [2022-11-21 16:40:49,483 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 437.2) internal successors, (2186), 5 states have internal predecessors, (2186), 0 states have call successors, (0), 0 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 16:40:49,483 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 16:40:49,484 INFO L209 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:40:49,484 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2022-11-21 16:40:49,484 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-21 16:40:49,485 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:40:49,485 INFO L85 PathProgramCache]: Analyzing trace with hash 1220416637, now seen corresponding path program 2 times [2022-11-21 16:40:49,485 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:40:49,485 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [295258272] [2022-11-21 16:40:49,485 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:40:49,486 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:40:49,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:40:49,716 INFO L134 CoverageAnalysis]: Checked inductivity of 130 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 130 trivial. 0 not checked. [2022-11-21 16:40:49,717 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:40:49,717 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [295258272] [2022-11-21 16:40:49,717 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [295258272] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:40:49,717 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:40:49,717 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-21 16:40:49,718 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [598494616] [2022-11-21 16:40:49,718 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:40:49,718 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-21 16:40:49,718 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:40:49,719 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-21 16:40:49,719 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-21 16:40:49,721 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 434 out of 516 [2022-11-21 16:40:49,722 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 549 places, 533 transitions, 1591 flow. Second operand has 5 states, 5 states have (on average 438.8) internal successors, (2194), 5 states have internal predecessors, (2194), 0 states have call successors, (0), 0 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 16:40:49,722 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 16:40:49,722 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 434 of 516 [2022-11-21 16:40:49,723 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 16:40:50,878 INFO L130 PetriNetUnfolder]: 772/4834 cut-off events. [2022-11-21 16:40:50,879 INFO L131 PetriNetUnfolder]: For 3589/3597 co-relation queries the response was YES. [2022-11-21 16:40:50,927 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8019 conditions, 4834 events. 772/4834 cut-off events. For 3589/3597 co-relation queries the response was YES. Maximal size of possible extension queue 166. Compared 46929 event pairs, 189 based on Foata normal form. 44/4551 useless extension candidates. Maximal degree in co-relation 7973. Up to 983 conditions per place. [2022-11-21 16:40:50,940 INFO L137 encePairwiseOnDemand]: 505/516 looper letters, 80 selfloop transitions, 12 changer transitions 17/574 dead transitions. [2022-11-21 16:40:50,940 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 553 places, 574 transitions, 2024 flow [2022-11-21 16:40:50,941 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-21 16:40:50,941 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-11-21 16:40:50,943 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 2700 transitions. [2022-11-21 16:40:50,944 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.872093023255814 [2022-11-21 16:40:50,944 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 2700 transitions. [2022-11-21 16:40:50,944 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 2700 transitions. [2022-11-21 16:40:50,945 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 16:40:50,946 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 2700 transitions. [2022-11-21 16:40:50,949 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 450.0) internal successors, (2700), 6 states have internal predecessors, (2700), 0 states have call successors, (0), 0 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 16:40:50,952 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 516.0) internal successors, (3612), 7 states have internal predecessors, (3612), 0 states have call successors, (0), 0 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 16:40:50,953 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 516.0) internal successors, (3612), 7 states have internal predecessors, (3612), 0 states have call successors, (0), 0 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 16:40:50,953 INFO L175 Difference]: Start difference. First operand has 549 places, 533 transitions, 1591 flow. Second operand 6 states and 2700 transitions. [2022-11-21 16:40:50,953 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 553 places, 574 transitions, 2024 flow [2022-11-21 16:40:50,974 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 552 places, 574 transitions, 2022 flow, removed 1 selfloop flow, removed 1 redundant places. [2022-11-21 16:40:50,981 INFO L231 Difference]: Finished difference. Result has 557 places, 538 transitions, 1688 flow [2022-11-21 16:40:50,982 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=516, PETRI_DIFFERENCE_MINUEND_FLOW=1589, PETRI_DIFFERENCE_MINUEND_PLACES=547, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=533, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=521, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1688, PETRI_PLACES=557, PETRI_TRANSITIONS=538} [2022-11-21 16:40:50,983 INFO L288 CegarLoopForPetriNet]: 463 programPoint places, 94 predicate places. [2022-11-21 16:40:50,983 INFO L495 AbstractCegarLoop]: Abstraction has has 557 places, 538 transitions, 1688 flow [2022-11-21 16:40:50,984 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 438.8) internal successors, (2194), 5 states have internal predecessors, (2194), 0 states have call successors, (0), 0 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 16:40:50,984 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 16:40:50,984 INFO L209 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:40:50,984 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2022-11-21 16:40:50,985 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-21 16:40:50,985 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:40:50,985 INFO L85 PathProgramCache]: Analyzing trace with hash 1207355868, now seen corresponding path program 3 times [2022-11-21 16:40:50,985 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:40:50,985 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [469066664] [2022-11-21 16:40:50,986 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:40:50,986 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:40:51,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:40:51,235 INFO L134 CoverageAnalysis]: Checked inductivity of 130 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 130 trivial. 0 not checked. [2022-11-21 16:40:51,236 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:40:51,236 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [469066664] [2022-11-21 16:40:51,236 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [469066664] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:40:51,236 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:40:51,237 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-21 16:40:51,237 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [875653950] [2022-11-21 16:40:51,237 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:40:51,237 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-21 16:40:51,238 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:40:51,238 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-21 16:40:51,238 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-21 16:40:51,240 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 432 out of 516 [2022-11-21 16:40:51,242 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 557 places, 538 transitions, 1688 flow. Second operand has 5 states, 5 states have (on average 437.2) internal successors, (2186), 5 states have internal predecessors, (2186), 0 states have call successors, (0), 0 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 16:40:51,242 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 16:40:51,242 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 432 of 516 [2022-11-21 16:40:51,242 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 16:40:52,660 INFO L130 PetriNetUnfolder]: 529/4898 cut-off events. [2022-11-21 16:40:52,660 INFO L131 PetriNetUnfolder]: For 2791/2888 co-relation queries the response was YES. [2022-11-21 16:40:52,709 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7740 conditions, 4898 events. 529/4898 cut-off events. For 2791/2888 co-relation queries the response was YES. Maximal size of possible extension queue 93. Compared 46333 event pairs, 224 based on Foata normal form. 14/4714 useless extension candidates. Maximal degree in co-relation 7690. Up to 661 conditions per place. [2022-11-21 16:40:52,721 INFO L137 encePairwiseOnDemand]: 499/516 looper letters, 76 selfloop transitions, 14 changer transitions 14/569 dead transitions. [2022-11-21 16:40:52,721 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 563 places, 569 transitions, 2096 flow [2022-11-21 16:40:52,721 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-21 16:40:52,722 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-21 16:40:52,723 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 3118 transitions. [2022-11-21 16:40:52,724 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.863233665559247 [2022-11-21 16:40:52,725 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 3118 transitions. [2022-11-21 16:40:52,725 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 3118 transitions. [2022-11-21 16:40:52,725 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 16:40:52,725 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 3118 transitions. [2022-11-21 16:40:52,728 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 445.42857142857144) internal successors, (3118), 7 states have internal predecessors, (3118), 0 states have call successors, (0), 0 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 16:40:52,730 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 516.0) internal successors, (4128), 8 states have internal predecessors, (4128), 0 states have call successors, (0), 0 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 16:40:52,730 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 516.0) internal successors, (4128), 8 states have internal predecessors, (4128), 0 states have call successors, (0), 0 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 16:40:52,730 INFO L175 Difference]: Start difference. First operand has 557 places, 538 transitions, 1688 flow. Second operand 7 states and 3118 transitions. [2022-11-21 16:40:52,730 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 563 places, 569 transitions, 2096 flow [2022-11-21 16:40:52,749 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 562 places, 569 transitions, 2083 flow, removed 2 selfloop flow, removed 1 redundant places. [2022-11-21 16:40:52,757 INFO L231 Difference]: Finished difference. Result has 564 places, 536 transitions, 1677 flow [2022-11-21 16:40:52,758 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=516, PETRI_DIFFERENCE_MINUEND_FLOW=1667, PETRI_DIFFERENCE_MINUEND_PLACES=556, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=536, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=522, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1677, PETRI_PLACES=564, PETRI_TRANSITIONS=536} [2022-11-21 16:40:52,758 INFO L288 CegarLoopForPetriNet]: 463 programPoint places, 101 predicate places. [2022-11-21 16:40:52,758 INFO L495 AbstractCegarLoop]: Abstraction has has 564 places, 536 transitions, 1677 flow [2022-11-21 16:40:52,759 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 437.2) internal successors, (2186), 5 states have internal predecessors, (2186), 0 states have call successors, (0), 0 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 16:40:52,759 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 16:40:52,760 INFO L209 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:40:52,760 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2022-11-21 16:40:52,760 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-21 16:40:52,760 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:40:52,761 INFO L85 PathProgramCache]: Analyzing trace with hash -894623721, now seen corresponding path program 3 times [2022-11-21 16:40:52,761 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:40:52,761 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1682208492] [2022-11-21 16:40:52,761 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:40:52,762 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:40:52,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:40:53,002 INFO L134 CoverageAnalysis]: Checked inductivity of 130 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 130 trivial. 0 not checked. [2022-11-21 16:40:53,003 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:40:53,003 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1682208492] [2022-11-21 16:40:53,003 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1682208492] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:40:53,003 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:40:53,004 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-21 16:40:53,004 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1329319414] [2022-11-21 16:40:53,004 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:40:53,005 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-21 16:40:53,005 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:40:53,005 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-21 16:40:53,005 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-21 16:40:53,007 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 432 out of 516 [2022-11-21 16:40:53,009 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 564 places, 536 transitions, 1677 flow. Second operand has 5 states, 5 states have (on average 437.2) internal successors, (2186), 5 states have internal predecessors, (2186), 0 states have call successors, (0), 0 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 16:40:53,009 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 16:40:53,009 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 432 of 516 [2022-11-21 16:40:53,010 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 16:40:54,396 INFO L130 PetriNetUnfolder]: 763/5023 cut-off events. [2022-11-21 16:40:54,396 INFO L131 PetriNetUnfolder]: For 3595/3615 co-relation queries the response was YES. [2022-11-21 16:40:54,444 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8640 conditions, 5023 events. 763/5023 cut-off events. For 3595/3615 co-relation queries the response was YES. Maximal size of possible extension queue 169. Compared 48780 event pairs, 376 based on Foata normal form. 14/4721 useless extension candidates. Maximal degree in co-relation 8587. Up to 783 conditions per place. [2022-11-21 16:40:54,454 INFO L137 encePairwiseOnDemand]: 501/516 looper letters, 76 selfloop transitions, 14 changer transitions 33/586 dead transitions. [2022-11-21 16:40:54,454 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 569 places, 586 transitions, 2122 flow [2022-11-21 16:40:54,455 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-21 16:40:54,455 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-21 16:40:54,457 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 3131 transitions. [2022-11-21 16:40:54,457 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8668327796234773 [2022-11-21 16:40:54,457 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 3131 transitions. [2022-11-21 16:40:54,458 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 3131 transitions. [2022-11-21 16:40:54,458 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 16:40:54,458 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 3131 transitions. [2022-11-21 16:40:54,461 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 447.2857142857143) internal successors, (3131), 7 states have internal predecessors, (3131), 0 states have call successors, (0), 0 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 16:40:54,586 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 516.0) internal successors, (4128), 8 states have internal predecessors, (4128), 0 states have call successors, (0), 0 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 16:40:54,586 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 516.0) internal successors, (4128), 8 states have internal predecessors, (4128), 0 states have call successors, (0), 0 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 16:40:54,586 INFO L175 Difference]: Start difference. First operand has 564 places, 536 transitions, 1677 flow. Second operand 7 states and 3131 transitions. [2022-11-21 16:40:54,587 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 569 places, 586 transitions, 2122 flow [2022-11-21 16:40:54,610 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 564 places, 586 transitions, 2095 flow, removed 2 selfloop flow, removed 5 redundant places. [2022-11-21 16:40:54,617 INFO L231 Difference]: Finished difference. Result has 567 places, 532 transitions, 1654 flow [2022-11-21 16:40:54,618 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=516, PETRI_DIFFERENCE_MINUEND_FLOW=1656, PETRI_DIFFERENCE_MINUEND_PLACES=558, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=536, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=522, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1654, PETRI_PLACES=567, PETRI_TRANSITIONS=532} [2022-11-21 16:40:54,618 INFO L288 CegarLoopForPetriNet]: 463 programPoint places, 104 predicate places. [2022-11-21 16:40:54,619 INFO L495 AbstractCegarLoop]: Abstraction has has 567 places, 532 transitions, 1654 flow [2022-11-21 16:40:54,619 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 437.2) internal successors, (2186), 5 states have internal predecessors, (2186), 0 states have call successors, (0), 0 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 16:40:54,619 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 16:40:54,620 INFO L209 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:40:54,620 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2022-11-21 16:40:54,620 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-21 16:40:54,620 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:40:54,621 INFO L85 PathProgramCache]: Analyzing trace with hash -690333808, now seen corresponding path program 4 times [2022-11-21 16:40:54,621 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:40:54,621 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1069597106] [2022-11-21 16:40:54,621 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:40:54,621 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:40:54,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:40:54,853 INFO L134 CoverageAnalysis]: Checked inductivity of 130 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 130 trivial. 0 not checked. [2022-11-21 16:40:54,853 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:40:54,854 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1069597106] [2022-11-21 16:40:54,854 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1069597106] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:40:54,854 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:40:54,854 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-21 16:40:54,854 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [670492675] [2022-11-21 16:40:54,855 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:40:54,855 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-21 16:40:54,855 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:40:54,856 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-21 16:40:54,856 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-21 16:40:54,858 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 432 out of 516 [2022-11-21 16:40:54,859 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 567 places, 532 transitions, 1654 flow. Second operand has 5 states, 5 states have (on average 437.2) internal successors, (2186), 5 states have internal predecessors, (2186), 0 states have call successors, (0), 0 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 16:40:54,859 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 16:40:54,859 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 432 of 516 [2022-11-21 16:40:54,860 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 16:40:55,915 INFO L130 PetriNetUnfolder]: 432/3329 cut-off events. [2022-11-21 16:40:55,915 INFO L131 PetriNetUnfolder]: For 3189/3333 co-relation queries the response was YES. [2022-11-21 16:40:55,961 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5930 conditions, 3329 events. 432/3329 cut-off events. For 3189/3333 co-relation queries the response was YES. Maximal size of possible extension queue 72. Compared 28229 event pairs, 264 based on Foata normal form. 7/3231 useless extension candidates. Maximal degree in co-relation 5876. Up to 599 conditions per place. [2022-11-21 16:40:55,971 INFO L137 encePairwiseOnDemand]: 501/516 looper letters, 58 selfloop transitions, 12 changer transitions 27/553 dead transitions. [2022-11-21 16:40:55,971 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 570 places, 553 transitions, 1947 flow [2022-11-21 16:40:55,971 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-21 16:40:55,971 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-21 16:40:55,973 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 3102 transitions. [2022-11-21 16:40:55,974 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8588039867109635 [2022-11-21 16:40:55,975 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 3102 transitions. [2022-11-21 16:40:55,975 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 3102 transitions. [2022-11-21 16:40:55,976 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 16:40:55,976 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 3102 transitions. [2022-11-21 16:40:55,979 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 443.14285714285717) internal successors, (3102), 7 states have internal predecessors, (3102), 0 states have call successors, (0), 0 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 16:40:55,982 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 516.0) internal successors, (4128), 8 states have internal predecessors, (4128), 0 states have call successors, (0), 0 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 16:40:55,983 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 516.0) internal successors, (4128), 8 states have internal predecessors, (4128), 0 states have call successors, (0), 0 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 16:40:55,983 INFO L175 Difference]: Start difference. First operand has 567 places, 532 transitions, 1654 flow. Second operand 7 states and 3102 transitions. [2022-11-21 16:40:55,983 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 570 places, 553 transitions, 1947 flow [2022-11-21 16:40:56,009 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 563 places, 553 transitions, 1910 flow, removed 9 selfloop flow, removed 7 redundant places. [2022-11-21 16:40:56,016 INFO L231 Difference]: Finished difference. Result has 566 places, 522 transitions, 1582 flow [2022-11-21 16:40:56,017 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=516, PETRI_DIFFERENCE_MINUEND_FLOW=1625, PETRI_DIFFERENCE_MINUEND_PLACES=557, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=532, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=520, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1582, PETRI_PLACES=566, PETRI_TRANSITIONS=522} [2022-11-21 16:40:56,019 INFO L288 CegarLoopForPetriNet]: 463 programPoint places, 103 predicate places. [2022-11-21 16:40:56,019 INFO L495 AbstractCegarLoop]: Abstraction has has 566 places, 522 transitions, 1582 flow [2022-11-21 16:40:56,020 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 437.2) internal successors, (2186), 5 states have internal predecessors, (2186), 0 states have call successors, (0), 0 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 16:40:56,020 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 16:40:56,020 INFO L209 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:40:56,021 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2022-11-21 16:40:56,021 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-21 16:40:56,021 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:40:56,022 INFO L85 PathProgramCache]: Analyzing trace with hash -251231591, now seen corresponding path program 4 times [2022-11-21 16:40:56,022 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:40:56,022 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [986093258] [2022-11-21 16:40:56,022 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:40:56,022 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:40:56,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:40:56,252 INFO L134 CoverageAnalysis]: Checked inductivity of 130 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 130 trivial. 0 not checked. [2022-11-21 16:40:56,253 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:40:56,253 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [986093258] [2022-11-21 16:40:56,253 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [986093258] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:40:56,253 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:40:56,254 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-21 16:40:56,254 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [626977706] [2022-11-21 16:40:56,254 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:40:56,254 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-21 16:40:56,255 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:40:56,255 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-21 16:40:56,255 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-21 16:40:56,257 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 434 out of 516 [2022-11-21 16:40:56,258 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 566 places, 522 transitions, 1582 flow. Second operand has 5 states, 5 states have (on average 438.8) internal successors, (2194), 5 states have internal predecessors, (2194), 0 states have call successors, (0), 0 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 16:40:56,259 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 16:40:56,259 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 434 of 516 [2022-11-21 16:40:56,259 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 16:40:57,654 INFO L130 PetriNetUnfolder]: 708/4560 cut-off events. [2022-11-21 16:40:57,655 INFO L131 PetriNetUnfolder]: For 3213/3217 co-relation queries the response was YES. [2022-11-21 16:40:57,684 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7713 conditions, 4560 events. 708/4560 cut-off events. For 3213/3217 co-relation queries the response was YES. Maximal size of possible extension queue 130. Compared 42633 event pairs, 215 based on Foata normal form. 2/4278 useless extension candidates. Maximal degree in co-relation 7661. Up to 794 conditions per place. [2022-11-21 16:40:57,691 INFO L137 encePairwiseOnDemand]: 489/516 looper letters, 73 selfloop transitions, 34 changer transitions 15/576 dead transitions. [2022-11-21 16:40:57,691 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 559 places, 576 transitions, 2037 flow [2022-11-21 16:40:57,692 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-21 16:40:57,692 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-21 16:40:57,694 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 3146 transitions. [2022-11-21 16:40:57,695 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8709856035437431 [2022-11-21 16:40:57,695 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 3146 transitions. [2022-11-21 16:40:57,695 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 3146 transitions. [2022-11-21 16:40:57,695 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 16:40:57,695 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 3146 transitions. [2022-11-21 16:40:57,698 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 449.42857142857144) internal successors, (3146), 7 states have internal predecessors, (3146), 0 states have call successors, (0), 0 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 16:40:57,700 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 516.0) internal successors, (4128), 8 states have internal predecessors, (4128), 0 states have call successors, (0), 0 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 16:40:57,700 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 516.0) internal successors, (4128), 8 states have internal predecessors, (4128), 0 states have call successors, (0), 0 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 16:40:57,700 INFO L175 Difference]: Start difference. First operand has 566 places, 522 transitions, 1582 flow. Second operand 7 states and 3146 transitions. [2022-11-21 16:40:57,700 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 559 places, 576 transitions, 2037 flow [2022-11-21 16:40:57,716 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 544 places, 576 transitions, 1966 flow, removed 14 selfloop flow, removed 15 redundant places. [2022-11-21 16:40:57,724 INFO L231 Difference]: Finished difference. Result has 547 places, 535 transitions, 1675 flow [2022-11-21 16:40:57,725 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=516, PETRI_DIFFERENCE_MINUEND_FLOW=1533, PETRI_DIFFERENCE_MINUEND_PLACES=538, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=522, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=493, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1675, PETRI_PLACES=547, PETRI_TRANSITIONS=535} [2022-11-21 16:40:57,725 INFO L288 CegarLoopForPetriNet]: 463 programPoint places, 84 predicate places. [2022-11-21 16:40:57,725 INFO L495 AbstractCegarLoop]: Abstraction has has 547 places, 535 transitions, 1675 flow [2022-11-21 16:40:57,726 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 438.8) internal successors, (2194), 5 states have internal predecessors, (2194), 0 states have call successors, (0), 0 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 16:40:57,726 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 16:40:57,726 INFO L209 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:40:57,727 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2022-11-21 16:40:57,727 INFO L420 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-21 16:40:57,727 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:40:57,727 INFO L85 PathProgramCache]: Analyzing trace with hash -2005140243, now seen corresponding path program 1 times [2022-11-21 16:40:57,728 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:40:57,728 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1753497684] [2022-11-21 16:40:57,728 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:40:57,728 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:40:57,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:40:57,991 INFO L134 CoverageAnalysis]: Checked inductivity of 130 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 130 trivial. 0 not checked. [2022-11-21 16:40:57,991 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:40:57,992 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1753497684] [2022-11-21 16:40:57,993 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1753497684] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:40:57,993 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:40:57,993 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-21 16:40:57,993 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [392108831] [2022-11-21 16:40:57,993 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:40:57,994 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-21 16:40:57,994 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:40:57,994 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-21 16:40:57,995 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-21 16:40:57,996 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 434 out of 516 [2022-11-21 16:40:57,998 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 547 places, 535 transitions, 1675 flow. Second operand has 5 states, 5 states have (on average 439.0) internal successors, (2195), 5 states have internal predecessors, (2195), 0 states have call successors, (0), 0 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 16:40:57,998 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 16:40:57,998 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 434 of 516 [2022-11-21 16:40:57,998 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 16:40:58,945 INFO L130 PetriNetUnfolder]: 610/3556 cut-off events. [2022-11-21 16:40:58,945 INFO L131 PetriNetUnfolder]: For 2257/2257 co-relation queries the response was YES. [2022-11-21 16:40:58,975 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6100 conditions, 3556 events. 610/3556 cut-off events. For 2257/2257 co-relation queries the response was YES. Maximal size of possible extension queue 141. Compared 31340 event pairs, 248 based on Foata normal form. 33/3326 useless extension candidates. Maximal degree in co-relation 6059. Up to 723 conditions per place. [2022-11-21 16:40:58,982 INFO L137 encePairwiseOnDemand]: 507/516 looper letters, 72 selfloop transitions, 9 changer transitions 6/541 dead transitions. [2022-11-21 16:40:58,982 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 545 places, 541 transitions, 1811 flow [2022-11-21 16:40:58,987 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-21 16:40:58,987 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-11-21 16:40:58,989 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 2679 transitions. [2022-11-21 16:40:58,990 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8653100775193798 [2022-11-21 16:40:58,990 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 2679 transitions. [2022-11-21 16:40:58,990 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 2679 transitions. [2022-11-21 16:40:58,991 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 16:40:58,992 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 2679 transitions. [2022-11-21 16:40:58,995 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 446.5) internal successors, (2679), 6 states have internal predecessors, (2679), 0 states have call successors, (0), 0 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 16:40:58,998 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 516.0) internal successors, (3612), 7 states have internal predecessors, (3612), 0 states have call successors, (0), 0 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 16:40:58,999 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 516.0) internal successors, (3612), 7 states have internal predecessors, (3612), 0 states have call successors, (0), 0 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 16:40:58,999 INFO L175 Difference]: Start difference. First operand has 547 places, 535 transitions, 1675 flow. Second operand 6 states and 2679 transitions. [2022-11-21 16:40:58,999 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 545 places, 541 transitions, 1811 flow [2022-11-21 16:40:59,014 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 534 places, 541 transitions, 1750 flow, removed 18 selfloop flow, removed 11 redundant places. [2022-11-21 16:40:59,020 INFO L231 Difference]: Finished difference. Result has 534 places, 518 transitions, 1511 flow [2022-11-21 16:40:59,021 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=516, PETRI_DIFFERENCE_MINUEND_FLOW=1493, PETRI_DIFFERENCE_MINUEND_PLACES=529, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=518, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=509, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1511, PETRI_PLACES=534, PETRI_TRANSITIONS=518} [2022-11-21 16:40:59,022 INFO L288 CegarLoopForPetriNet]: 463 programPoint places, 71 predicate places. [2022-11-21 16:40:59,022 INFO L495 AbstractCegarLoop]: Abstraction has has 534 places, 518 transitions, 1511 flow [2022-11-21 16:40:59,023 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 439.0) internal successors, (2195), 5 states have internal predecessors, (2195), 0 states have call successors, (0), 0 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 16:40:59,023 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 16:40:59,023 INFO L209 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:40:59,024 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2022-11-21 16:40:59,024 INFO L420 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-21 16:40:59,024 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:40:59,024 INFO L85 PathProgramCache]: Analyzing trace with hash -73880989, now seen corresponding path program 2 times [2022-11-21 16:40:59,025 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:40:59,025 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [567664364] [2022-11-21 16:40:59,025 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:40:59,025 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:40:59,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:40:59,293 INFO L134 CoverageAnalysis]: Checked inductivity of 130 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 130 trivial. 0 not checked. [2022-11-21 16:40:59,293 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:40:59,295 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [567664364] [2022-11-21 16:40:59,296 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [567664364] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:40:59,296 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:40:59,296 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-21 16:40:59,296 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [859889366] [2022-11-21 16:40:59,296 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:40:59,297 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-21 16:40:59,297 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:40:59,298 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-21 16:40:59,298 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-21 16:40:59,300 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 434 out of 516 [2022-11-21 16:40:59,302 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 534 places, 518 transitions, 1511 flow. Second operand has 5 states, 5 states have (on average 439.0) internal successors, (2195), 5 states have internal predecessors, (2195), 0 states have call successors, (0), 0 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 16:40:59,302 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 16:40:59,302 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 434 of 516 [2022-11-21 16:40:59,302 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 16:41:00,383 INFO L130 PetriNetUnfolder]: 577/3635 cut-off events. [2022-11-21 16:41:00,383 INFO L131 PetriNetUnfolder]: For 1183/1183 co-relation queries the response was YES. [2022-11-21 16:41:00,404 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5879 conditions, 3635 events. 577/3635 cut-off events. For 1183/1183 co-relation queries the response was YES. Maximal size of possible extension queue 113. Compared 31652 event pairs, 216 based on Foata normal form. 2/3378 useless extension candidates. Maximal degree in co-relation 5846. Up to 690 conditions per place. [2022-11-21 16:41:00,411 INFO L137 encePairwiseOnDemand]: 498/516 looper letters, 61 selfloop transitions, 16 changer transitions 16/542 dead transitions. [2022-11-21 16:41:00,411 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 540 places, 542 transitions, 1765 flow [2022-11-21 16:41:00,412 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-21 16:41:00,412 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-21 16:41:00,415 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 3121 transitions. [2022-11-21 16:41:00,416 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8640642303433002 [2022-11-21 16:41:00,416 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 3121 transitions. [2022-11-21 16:41:00,416 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 3121 transitions. [2022-11-21 16:41:00,418 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 16:41:00,418 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 3121 transitions. [2022-11-21 16:41:00,422 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 445.85714285714283) internal successors, (3121), 7 states have internal predecessors, (3121), 0 states have call successors, (0), 0 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 16:41:00,427 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 516.0) internal successors, (4128), 8 states have internal predecessors, (4128), 0 states have call successors, (0), 0 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 16:41:00,427 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 516.0) internal successors, (4128), 8 states have internal predecessors, (4128), 0 states have call successors, (0), 0 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 16:41:00,427 INFO L175 Difference]: Start difference. First operand has 534 places, 518 transitions, 1511 flow. Second operand 7 states and 3121 transitions. [2022-11-21 16:41:00,428 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 540 places, 542 transitions, 1765 flow [2022-11-21 16:41:00,440 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 534 places, 542 transitions, 1740 flow, removed 0 selfloop flow, removed 6 redundant places. [2022-11-21 16:41:00,445 INFO L231 Difference]: Finished difference. Result has 534 places, 509 transitions, 1460 flow [2022-11-21 16:41:00,446 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=516, PETRI_DIFFERENCE_MINUEND_FLOW=1466, PETRI_DIFFERENCE_MINUEND_PLACES=528, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=515, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=499, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1460, PETRI_PLACES=534, PETRI_TRANSITIONS=509} [2022-11-21 16:41:00,446 INFO L288 CegarLoopForPetriNet]: 463 programPoint places, 71 predicate places. [2022-11-21 16:41:00,447 INFO L495 AbstractCegarLoop]: Abstraction has has 534 places, 509 transitions, 1460 flow [2022-11-21 16:41:00,447 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 439.0) internal successors, (2195), 5 states have internal predecessors, (2195), 0 states have call successors, (0), 0 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 16:41:00,447 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 16:41:00,448 INFO L209 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:41:00,448 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2022-11-21 16:41:00,448 INFO L420 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-21 16:41:00,448 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:41:00,449 INFO L85 PathProgramCache]: Analyzing trace with hash 1907474082, now seen corresponding path program 1 times [2022-11-21 16:41:00,449 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:41:00,449 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1493678019] [2022-11-21 16:41:00,449 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:41:00,450 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:41:00,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:41:01,843 INFO L134 CoverageAnalysis]: Checked inductivity of 130 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 130 trivial. 0 not checked. [2022-11-21 16:41:01,843 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:41:01,843 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1493678019] [2022-11-21 16:41:01,844 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1493678019] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:41:01,844 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:41:01,844 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-11-21 16:41:01,844 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2146809605] [2022-11-21 16:41:01,844 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:41:01,848 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-11-21 16:41:01,849 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:41:01,850 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-11-21 16:41:01,850 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=343, Unknown=0, NotChecked=0, Total=380 [2022-11-21 16:41:01,856 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 389 out of 516 [2022-11-21 16:41:01,860 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 534 places, 509 transitions, 1460 flow. Second operand has 20 states, 20 states have (on average 392.2) internal successors, (7844), 20 states have internal predecessors, (7844), 0 states have call successors, (0), 0 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 16:41:01,861 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 16:41:01,861 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 389 of 516 [2022-11-21 16:41:01,861 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 16:41:09,951 INFO L130 PetriNetUnfolder]: 2061/8516 cut-off events. [2022-11-21 16:41:09,951 INFO L131 PetriNetUnfolder]: For 1303/1304 co-relation queries the response was YES. [2022-11-21 16:41:10,020 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14924 conditions, 8516 events. 2061/8516 cut-off events. For 1303/1304 co-relation queries the response was YES. Maximal size of possible extension queue 223. Compared 86003 event pairs, 1132 based on Foata normal form. 1/8127 useless extension candidates. Maximal degree in co-relation 14893. Up to 2421 conditions per place. [2022-11-21 16:41:10,037 INFO L137 encePairwiseOnDemand]: 491/516 looper letters, 424 selfloop transitions, 11 changer transitions 112/964 dead transitions. [2022-11-21 16:41:10,037 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 582 places, 964 transitions, 3719 flow [2022-11-21 16:41:10,038 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 59 states. [2022-11-21 16:41:10,038 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 59 states. [2022-11-21 16:41:10,048 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 23499 transitions. [2022-11-21 16:41:10,051 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7718762317698069 [2022-11-21 16:41:10,051 INFO L72 ComplementDD]: Start complementDD. Operand 59 states and 23499 transitions. [2022-11-21 16:41:10,051 INFO L73 IsDeterministic]: Start isDeterministic. Operand 59 states and 23499 transitions. [2022-11-21 16:41:10,055 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 16:41:10,055 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 59 states and 23499 transitions. [2022-11-21 16:41:10,070 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 60 states, 59 states have (on average 398.2881355932203) internal successors, (23499), 59 states have internal predecessors, (23499), 0 states have call successors, (0), 0 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 16:41:10,086 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 60 states, 60 states have (on average 516.0) internal successors, (30960), 60 states have internal predecessors, (30960), 0 states have call successors, (0), 0 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 16:41:10,091 INFO L81 ComplementDD]: Finished complementDD. Result has 60 states, 60 states have (on average 516.0) internal successors, (30960), 60 states have internal predecessors, (30960), 0 states have call successors, (0), 0 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 16:41:10,091 INFO L175 Difference]: Start difference. First operand has 534 places, 509 transitions, 1460 flow. Second operand 59 states and 23499 transitions. [2022-11-21 16:41:10,091 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 582 places, 964 transitions, 3719 flow [2022-11-21 16:41:10,112 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 575 places, 964 transitions, 3691 flow, removed 4 selfloop flow, removed 7 redundant places. [2022-11-21 16:41:10,120 INFO L231 Difference]: Finished difference. Result has 622 places, 509 transitions, 1555 flow [2022-11-21 16:41:10,121 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=516, PETRI_DIFFERENCE_MINUEND_FLOW=1432, PETRI_DIFFERENCE_MINUEND_PLACES=517, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=509, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=498, PETRI_DIFFERENCE_SUBTRAHEND_STATES=59, PETRI_FLOW=1555, PETRI_PLACES=622, PETRI_TRANSITIONS=509} [2022-11-21 16:41:10,122 INFO L288 CegarLoopForPetriNet]: 463 programPoint places, 159 predicate places. [2022-11-21 16:41:10,122 INFO L495 AbstractCegarLoop]: Abstraction has has 622 places, 509 transitions, 1555 flow [2022-11-21 16:41:10,123 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 392.2) internal successors, (7844), 20 states have internal predecessors, (7844), 0 states have call successors, (0), 0 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 16:41:10,123 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 16:41:10,124 INFO L209 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:41:10,124 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2022-11-21 16:41:10,124 INFO L420 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-21 16:41:10,124 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:41:10,125 INFO L85 PathProgramCache]: Analyzing trace with hash -3181480, now seen corresponding path program 2 times [2022-11-21 16:41:10,125 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:41:10,125 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [696464442] [2022-11-21 16:41:10,125 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:41:10,125 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:41:10,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:41:11,387 INFO L134 CoverageAnalysis]: Checked inductivity of 130 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 130 trivial. 0 not checked. [2022-11-21 16:41:11,387 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:41:11,387 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [696464442] [2022-11-21 16:41:11,387 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [696464442] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:41:11,387 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:41:11,388 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-11-21 16:41:11,388 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1587151031] [2022-11-21 16:41:11,388 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:41:11,388 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-11-21 16:41:11,388 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:41:11,389 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-11-21 16:41:11,389 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=343, Unknown=0, NotChecked=0, Total=380 [2022-11-21 16:41:11,393 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 389 out of 516 [2022-11-21 16:41:11,398 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 622 places, 509 transitions, 1555 flow. Second operand has 20 states, 20 states have (on average 392.2) internal successors, (7844), 20 states have internal predecessors, (7844), 0 states have call successors, (0), 0 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 16:41:11,398 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 16:41:11,398 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 389 of 516 [2022-11-21 16:41:11,399 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 16:41:19,638 INFO L130 PetriNetUnfolder]: 2057/8655 cut-off events. [2022-11-21 16:41:19,638 INFO L131 PetriNetUnfolder]: For 6536/6536 co-relation queries the response was YES. [2022-11-21 16:41:19,782 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18066 conditions, 8655 events. 2057/8655 cut-off events. For 6536/6536 co-relation queries the response was YES. Maximal size of possible extension queue 222. Compared 86864 event pairs, 1151 based on Foata normal form. 1/8223 useless extension candidates. Maximal degree in co-relation 17991. Up to 2408 conditions per place. [2022-11-21 16:41:19,808 INFO L137 encePairwiseOnDemand]: 491/516 looper letters, 423 selfloop transitions, 11 changer transitions 105/956 dead transitions. [2022-11-21 16:41:19,808 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 634 places, 956 transitions, 4439 flow [2022-11-21 16:41:19,808 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 59 states. [2022-11-21 16:41:19,808 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 59 states. [2022-11-21 16:41:19,822 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 23491 transitions. [2022-11-21 16:41:19,827 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7716134542110104 [2022-11-21 16:41:19,827 INFO L72 ComplementDD]: Start complementDD. Operand 59 states and 23491 transitions. [2022-11-21 16:41:19,827 INFO L73 IsDeterministic]: Start isDeterministic. Operand 59 states and 23491 transitions. [2022-11-21 16:41:19,832 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 16:41:19,833 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 59 states and 23491 transitions. [2022-11-21 16:41:19,848 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 60 states, 59 states have (on average 398.1525423728813) internal successors, (23491), 59 states have internal predecessors, (23491), 0 states have call successors, (0), 0 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 16:41:19,865 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 60 states, 60 states have (on average 516.0) internal successors, (30960), 60 states have internal predecessors, (30960), 0 states have call successors, (0), 0 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 16:41:19,870 INFO L81 ComplementDD]: Finished complementDD. Result has 60 states, 60 states have (on average 516.0) internal successors, (30960), 60 states have internal predecessors, (30960), 0 states have call successors, (0), 0 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 16:41:19,870 INFO L175 Difference]: Start difference. First operand has 622 places, 509 transitions, 1555 flow. Second operand 59 states and 23491 transitions. [2022-11-21 16:41:19,870 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 634 places, 956 transitions, 4439 flow [2022-11-21 16:41:19,972 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 580 places, 956 transitions, 3751 flow, removed 180 selfloop flow, removed 54 redundant places. [2022-11-21 16:41:19,981 INFO L231 Difference]: Finished difference. Result has 627 places, 509 transitions, 1571 flow [2022-11-21 16:41:19,982 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=516, PETRI_DIFFERENCE_MINUEND_FLOW=1448, PETRI_DIFFERENCE_MINUEND_PLACES=522, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=509, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=498, PETRI_DIFFERENCE_SUBTRAHEND_STATES=59, PETRI_FLOW=1571, PETRI_PLACES=627, PETRI_TRANSITIONS=509} [2022-11-21 16:41:19,982 INFO L288 CegarLoopForPetriNet]: 463 programPoint places, 164 predicate places. [2022-11-21 16:41:19,982 INFO L495 AbstractCegarLoop]: Abstraction has has 627 places, 509 transitions, 1571 flow [2022-11-21 16:41:19,983 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 392.2) internal successors, (7844), 20 states have internal predecessors, (7844), 0 states have call successors, (0), 0 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 16:41:19,983 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 16:41:19,984 INFO L209 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:41:19,984 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2022-11-21 16:41:19,984 INFO L420 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-21 16:41:19,984 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:41:19,984 INFO L85 PathProgramCache]: Analyzing trace with hash -429716164, now seen corresponding path program 3 times [2022-11-21 16:41:19,984 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:41:19,985 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [846885990] [2022-11-21 16:41:19,985 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:41:19,985 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:41:20,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:41:21,301 INFO L134 CoverageAnalysis]: Checked inductivity of 130 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 130 trivial. 0 not checked. [2022-11-21 16:41:21,301 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:41:21,301 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [846885990] [2022-11-21 16:41:21,301 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [846885990] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:41:21,302 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:41:21,302 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-11-21 16:41:21,302 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [585934568] [2022-11-21 16:41:21,302 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:41:21,302 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-11-21 16:41:21,302 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:41:21,303 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-11-21 16:41:21,303 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=343, Unknown=0, NotChecked=0, Total=380 [2022-11-21 16:41:21,308 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 389 out of 516 [2022-11-21 16:41:21,312 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 627 places, 509 transitions, 1571 flow. Second operand has 20 states, 20 states have (on average 392.2) internal successors, (7844), 20 states have internal predecessors, (7844), 0 states have call successors, (0), 0 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 16:41:21,312 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 16:41:21,312 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 389 of 516 [2022-11-21 16:41:21,312 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 16:41:29,766 INFO L130 PetriNetUnfolder]: 2115/8839 cut-off events. [2022-11-21 16:41:29,766 INFO L131 PetriNetUnfolder]: For 9156/9156 co-relation queries the response was YES. [2022-11-21 16:41:29,936 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19001 conditions, 8839 events. 2115/8839 cut-off events. For 9156/9156 co-relation queries the response was YES. Maximal size of possible extension queue 223. Compared 90336 event pairs, 1190 based on Foata normal form. 1/8449 useless extension candidates. Maximal degree in co-relation 18922. Up to 2421 conditions per place. [2022-11-21 16:41:29,957 INFO L137 encePairwiseOnDemand]: 491/516 looper letters, 373 selfloop transitions, 15 changer transitions 104/909 dead transitions. [2022-11-21 16:41:29,957 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 636 places, 909 transitions, 4475 flow [2022-11-21 16:41:29,957 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2022-11-21 16:41:29,958 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56 states. [2022-11-21 16:41:29,967 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 22277 transitions. [2022-11-21 16:41:29,971 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.77093715393134 [2022-11-21 16:41:29,971 INFO L72 ComplementDD]: Start complementDD. Operand 56 states and 22277 transitions. [2022-11-21 16:41:29,971 INFO L73 IsDeterministic]: Start isDeterministic. Operand 56 states and 22277 transitions. [2022-11-21 16:41:29,975 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 16:41:29,975 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 56 states and 22277 transitions. [2022-11-21 16:41:29,991 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 57 states, 56 states have (on average 397.80357142857144) internal successors, (22277), 56 states have internal predecessors, (22277), 0 states have call successors, (0), 0 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 16:41:30,011 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 57 states, 57 states have (on average 516.0) internal successors, (29412), 57 states have internal predecessors, (29412), 0 states have call successors, (0), 0 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 16:41:30,018 INFO L81 ComplementDD]: Finished complementDD. Result has 57 states, 57 states have (on average 516.0) internal successors, (29412), 57 states have internal predecessors, (29412), 0 states have call successors, (0), 0 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 16:41:30,018 INFO L175 Difference]: Start difference. First operand has 627 places, 509 transitions, 1571 flow. Second operand 56 states and 22277 transitions. [2022-11-21 16:41:30,018 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 636 places, 909 transitions, 4475 flow [2022-11-21 16:41:30,110 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 582 places, 909 transitions, 3770 flow, removed 187 selfloop flow, removed 54 redundant places. [2022-11-21 16:41:30,118 INFO L231 Difference]: Finished difference. Result has 627 places, 514 transitions, 1632 flow [2022-11-21 16:41:30,119 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=516, PETRI_DIFFERENCE_MINUEND_FLOW=1464, PETRI_DIFFERENCE_MINUEND_PLACES=527, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=509, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=497, PETRI_DIFFERENCE_SUBTRAHEND_STATES=56, PETRI_FLOW=1632, PETRI_PLACES=627, PETRI_TRANSITIONS=514} [2022-11-21 16:41:30,119 INFO L288 CegarLoopForPetriNet]: 463 programPoint places, 164 predicate places. [2022-11-21 16:41:30,119 INFO L495 AbstractCegarLoop]: Abstraction has has 627 places, 514 transitions, 1632 flow [2022-11-21 16:41:30,120 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 392.2) internal successors, (7844), 20 states have internal predecessors, (7844), 0 states have call successors, (0), 0 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 16:41:30,120 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 16:41:30,121 INFO L209 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:41:30,121 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2022-11-21 16:41:30,121 INFO L420 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-21 16:41:30,121 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:41:30,121 INFO L85 PathProgramCache]: Analyzing trace with hash 419760060, now seen corresponding path program 4 times [2022-11-21 16:41:30,122 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:41:30,122 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1730306200] [2022-11-21 16:41:30,122 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:41:30,122 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:41:30,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:41:31,515 INFO L134 CoverageAnalysis]: Checked inductivity of 130 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 130 trivial. 0 not checked. [2022-11-21 16:41:31,516 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:41:31,516 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1730306200] [2022-11-21 16:41:31,516 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1730306200] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:41:31,516 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:41:31,516 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-11-21 16:41:31,517 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1400523968] [2022-11-21 16:41:31,517 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:41:31,517 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-11-21 16:41:31,518 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:41:31,518 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-11-21 16:41:31,518 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=343, Unknown=0, NotChecked=0, Total=380 [2022-11-21 16:41:31,527 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 389 out of 516 [2022-11-21 16:41:31,535 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 627 places, 514 transitions, 1632 flow. Second operand has 20 states, 20 states have (on average 392.2) internal successors, (7844), 20 states have internal predecessors, (7844), 0 states have call successors, (0), 0 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 16:41:31,536 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 16:41:31,536 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 389 of 516 [2022-11-21 16:41:31,536 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 16:41:40,179 INFO L130 PetriNetUnfolder]: 2187/9325 cut-off events. [2022-11-21 16:41:40,179 INFO L131 PetriNetUnfolder]: For 11070/11070 co-relation queries the response was YES. [2022-11-21 16:41:40,323 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20701 conditions, 9325 events. 2187/9325 cut-off events. For 11070/11070 co-relation queries the response was YES. Maximal size of possible extension queue 227. Compared 96028 event pairs, 1217 based on Foata normal form. 1/8874 useless extension candidates. Maximal degree in co-relation 20620. Up to 2408 conditions per place. [2022-11-21 16:41:40,343 INFO L137 encePairwiseOnDemand]: 491/516 looper letters, 400 selfloop transitions, 16 changer transitions 102/935 dead transitions. [2022-11-21 16:41:40,344 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 640 places, 935 transitions, 4847 flow [2022-11-21 16:41:40,344 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2022-11-21 16:41:40,344 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56 states. [2022-11-21 16:41:40,354 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 22274 transitions. [2022-11-21 16:41:40,358 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7708333333333334 [2022-11-21 16:41:40,358 INFO L72 ComplementDD]: Start complementDD. Operand 56 states and 22274 transitions. [2022-11-21 16:41:40,358 INFO L73 IsDeterministic]: Start isDeterministic. Operand 56 states and 22274 transitions. [2022-11-21 16:41:40,362 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 16:41:40,362 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 56 states and 22274 transitions. [2022-11-21 16:41:40,377 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 57 states, 56 states have (on average 397.75) internal successors, (22274), 56 states have internal predecessors, (22274), 0 states have call successors, (0), 0 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 16:41:40,394 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 57 states, 57 states have (on average 516.0) internal successors, (29412), 57 states have internal predecessors, (29412), 0 states have call successors, (0), 0 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 16:41:40,398 INFO L81 ComplementDD]: Finished complementDD. Result has 57 states, 57 states have (on average 516.0) internal successors, (29412), 57 states have internal predecessors, (29412), 0 states have call successors, (0), 0 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 16:41:40,398 INFO L175 Difference]: Start difference. First operand has 627 places, 514 transitions, 1632 flow. Second operand 56 states and 22274 transitions. [2022-11-21 16:41:40,398 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 640 places, 935 transitions, 4847 flow [2022-11-21 16:41:40,465 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 596 places, 935 transitions, 4331 flow, removed 186 selfloop flow, removed 44 redundant places. [2022-11-21 16:41:40,476 INFO L231 Difference]: Finished difference. Result has 641 places, 519 transitions, 1704 flow [2022-11-21 16:41:40,477 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=516, PETRI_DIFFERENCE_MINUEND_FLOW=1538, PETRI_DIFFERENCE_MINUEND_PLACES=541, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=514, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=501, PETRI_DIFFERENCE_SUBTRAHEND_STATES=56, PETRI_FLOW=1704, PETRI_PLACES=641, PETRI_TRANSITIONS=519} [2022-11-21 16:41:40,478 INFO L288 CegarLoopForPetriNet]: 463 programPoint places, 178 predicate places. [2022-11-21 16:41:40,478 INFO L495 AbstractCegarLoop]: Abstraction has has 641 places, 519 transitions, 1704 flow [2022-11-21 16:41:40,480 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 392.2) internal successors, (7844), 20 states have internal predecessors, (7844), 0 states have call successors, (0), 0 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 16:41:40,480 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 16:41:40,480 INFO L209 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:41:40,480 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2022-11-21 16:41:40,481 INFO L420 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-21 16:41:40,481 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:41:40,481 INFO L85 PathProgramCache]: Analyzing trace with hash 1066781256, now seen corresponding path program 5 times [2022-11-21 16:41:40,482 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:41:40,482 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1015788504] [2022-11-21 16:41:40,482 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:41:40,482 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:41:40,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:41:41,914 INFO L134 CoverageAnalysis]: Checked inductivity of 130 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 130 trivial. 0 not checked. [2022-11-21 16:41:41,915 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:41:41,915 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1015788504] [2022-11-21 16:41:41,915 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1015788504] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:41:41,915 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:41:41,915 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-11-21 16:41:41,915 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2118270508] [2022-11-21 16:41:41,915 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:41:41,916 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-11-21 16:41:41,916 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:41:41,916 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-11-21 16:41:41,917 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=343, Unknown=0, NotChecked=0, Total=380 [2022-11-21 16:41:41,924 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 389 out of 516 [2022-11-21 16:41:41,929 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 641 places, 519 transitions, 1704 flow. Second operand has 20 states, 20 states have (on average 392.2) internal successors, (7844), 20 states have internal predecessors, (7844), 0 states have call successors, (0), 0 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 16:41:41,929 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 16:41:41,929 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 389 of 516 [2022-11-21 16:41:41,930 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 16:41:50,733 INFO L130 PetriNetUnfolder]: 2267/9509 cut-off events. [2022-11-21 16:41:50,733 INFO L131 PetriNetUnfolder]: For 14339/14339 co-relation queries the response was YES. [2022-11-21 16:41:51,204 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21999 conditions, 9509 events. 2267/9509 cut-off events. For 14339/14339 co-relation queries the response was YES. Maximal size of possible extension queue 228. Compared 98723 event pairs, 1242 based on Foata normal form. 1/9100 useless extension candidates. Maximal degree in co-relation 21912. Up to 2421 conditions per place. [2022-11-21 16:41:51,223 INFO L137 encePairwiseOnDemand]: 491/516 looper letters, 381 selfloop transitions, 18 changer transitions 108/924 dead transitions. [2022-11-21 16:41:51,223 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 654 places, 924 transitions, 5022 flow [2022-11-21 16:41:51,223 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2022-11-21 16:41:51,224 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56 states. [2022-11-21 16:41:51,235 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 22265 transitions. [2022-11-21 16:41:51,239 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7705218715393134 [2022-11-21 16:41:51,239 INFO L72 ComplementDD]: Start complementDD. Operand 56 states and 22265 transitions. [2022-11-21 16:41:51,239 INFO L73 IsDeterministic]: Start isDeterministic. Operand 56 states and 22265 transitions. [2022-11-21 16:41:51,243 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 16:41:51,243 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 56 states and 22265 transitions. [2022-11-21 16:41:51,268 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 57 states, 56 states have (on average 397.5892857142857) internal successors, (22265), 56 states have internal predecessors, (22265), 0 states have call successors, (0), 0 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 16:41:51,295 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 57 states, 57 states have (on average 516.0) internal successors, (29412), 57 states have internal predecessors, (29412), 0 states have call successors, (0), 0 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 16:41:51,302 INFO L81 ComplementDD]: Finished complementDD. Result has 57 states, 57 states have (on average 516.0) internal successors, (29412), 57 states have internal predecessors, (29412), 0 states have call successors, (0), 0 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 16:41:51,302 INFO L175 Difference]: Start difference. First operand has 641 places, 519 transitions, 1704 flow. Second operand 56 states and 22265 transitions. [2022-11-21 16:41:51,302 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 654 places, 924 transitions, 5022 flow [2022-11-21 16:41:51,407 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 610 places, 924 transitions, 4498 flow, removed 190 selfloop flow, removed 44 redundant places. [2022-11-21 16:41:51,414 INFO L231 Difference]: Finished difference. Result has 657 places, 525 transitions, 1826 flow [2022-11-21 16:41:51,415 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=516, PETRI_DIFFERENCE_MINUEND_FLOW=1608, PETRI_DIFFERENCE_MINUEND_PLACES=555, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=519, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=503, PETRI_DIFFERENCE_SUBTRAHEND_STATES=56, PETRI_FLOW=1826, PETRI_PLACES=657, PETRI_TRANSITIONS=525} [2022-11-21 16:41:51,415 INFO L288 CegarLoopForPetriNet]: 463 programPoint places, 194 predicate places. [2022-11-21 16:41:51,415 INFO L495 AbstractCegarLoop]: Abstraction has has 657 places, 525 transitions, 1826 flow [2022-11-21 16:41:51,417 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 392.2) internal successors, (7844), 20 states have internal predecessors, (7844), 0 states have call successors, (0), 0 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 16:41:51,417 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 16:41:51,417 INFO L209 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:41:51,417 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2022-11-21 16:41:51,418 INFO L420 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-21 16:41:51,418 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:41:51,418 INFO L85 PathProgramCache]: Analyzing trace with hash -1783974608, now seen corresponding path program 6 times [2022-11-21 16:41:51,419 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:41:51,419 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1328585968] [2022-11-21 16:41:51,419 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:41:51,419 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:41:51,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:41:52,577 INFO L134 CoverageAnalysis]: Checked inductivity of 130 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 130 trivial. 0 not checked. [2022-11-21 16:41:52,578 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:41:52,578 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1328585968] [2022-11-21 16:41:52,578 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1328585968] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:41:52,578 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:41:52,578 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-11-21 16:41:52,578 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1367968099] [2022-11-21 16:41:52,578 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:41:52,579 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-11-21 16:41:52,579 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:41:52,579 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-11-21 16:41:52,580 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=343, Unknown=0, NotChecked=0, Total=380 [2022-11-21 16:41:52,585 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 389 out of 516 [2022-11-21 16:41:52,596 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 657 places, 525 transitions, 1826 flow. Second operand has 20 states, 20 states have (on average 392.2) internal successors, (7844), 20 states have internal predecessors, (7844), 0 states have call successors, (0), 0 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 16:41:52,596 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 16:41:52,596 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 389 of 516 [2022-11-21 16:41:52,596 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 16:42:01,912 INFO L130 PetriNetUnfolder]: 2327/9638 cut-off events. [2022-11-21 16:42:01,912 INFO L131 PetriNetUnfolder]: For 25588/25588 co-relation queries the response was YES. [2022-11-21 16:42:02,103 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24670 conditions, 9638 events. 2327/9638 cut-off events. For 25588/25588 co-relation queries the response was YES. Maximal size of possible extension queue 225. Compared 99300 event pairs, 1211 based on Foata normal form. 1/9228 useless extension candidates. Maximal degree in co-relation 24575. Up to 2408 conditions per place. [2022-11-21 16:42:02,140 INFO L137 encePairwiseOnDemand]: 491/516 looper letters, 411 selfloop transitions, 19 changer transitions 106/953 dead transitions. [2022-11-21 16:42:02,141 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 670 places, 953 transitions, 6050 flow [2022-11-21 16:42:02,141 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2022-11-21 16:42:02,141 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56 states. [2022-11-21 16:42:02,159 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 22263 transitions. [2022-11-21 16:42:02,165 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.770452657807309 [2022-11-21 16:42:02,165 INFO L72 ComplementDD]: Start complementDD. Operand 56 states and 22263 transitions. [2022-11-21 16:42:02,165 INFO L73 IsDeterministic]: Start isDeterministic. Operand 56 states and 22263 transitions. [2022-11-21 16:42:02,171 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 16:42:02,172 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 56 states and 22263 transitions. [2022-11-21 16:42:02,325 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 57 states, 56 states have (on average 397.55357142857144) internal successors, (22263), 56 states have internal predecessors, (22263), 0 states have call successors, (0), 0 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 16:42:02,347 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 57 states, 57 states have (on average 516.0) internal successors, (29412), 57 states have internal predecessors, (29412), 0 states have call successors, (0), 0 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 16:42:02,352 INFO L81 ComplementDD]: Finished complementDD. Result has 57 states, 57 states have (on average 516.0) internal successors, (29412), 57 states have internal predecessors, (29412), 0 states have call successors, (0), 0 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 16:42:02,361 INFO L175 Difference]: Start difference. First operand has 657 places, 525 transitions, 1826 flow. Second operand 56 states and 22263 transitions. [2022-11-21 16:42:02,361 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 670 places, 953 transitions, 6050 flow [2022-11-21 16:42:02,458 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 630 places, 953 transitions, 5372 flow, removed 264 selfloop flow, removed 40 redundant places. [2022-11-21 16:42:02,465 INFO L231 Difference]: Finished difference. Result has 677 places, 531 transitions, 1949 flow [2022-11-21 16:42:02,466 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=516, PETRI_DIFFERENCE_MINUEND_FLOW=1729, PETRI_DIFFERENCE_MINUEND_PLACES=575, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=525, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=508, PETRI_DIFFERENCE_SUBTRAHEND_STATES=56, PETRI_FLOW=1949, PETRI_PLACES=677, PETRI_TRANSITIONS=531} [2022-11-21 16:42:02,466 INFO L288 CegarLoopForPetriNet]: 463 programPoint places, 214 predicate places. [2022-11-21 16:42:02,467 INFO L495 AbstractCegarLoop]: Abstraction has has 677 places, 531 transitions, 1949 flow [2022-11-21 16:42:02,467 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 392.2) internal successors, (7844), 20 states have internal predecessors, (7844), 0 states have call successors, (0), 0 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 16:42:02,467 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 16:42:02,468 INFO L209 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:42:02,468 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2022-11-21 16:42:02,468 INFO L420 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-21 16:42:02,468 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:42:02,468 INFO L85 PathProgramCache]: Analyzing trace with hash -922317096, now seen corresponding path program 7 times [2022-11-21 16:42:02,468 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:42:02,469 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1924602441] [2022-11-21 16:42:02,469 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:42:02,469 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:42:02,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:42:03,687 INFO L134 CoverageAnalysis]: Checked inductivity of 130 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 130 trivial. 0 not checked. [2022-11-21 16:42:03,687 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:42:03,687 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1924602441] [2022-11-21 16:42:03,687 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1924602441] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:42:03,687 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:42:03,688 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-11-21 16:42:03,688 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1137689037] [2022-11-21 16:42:03,688 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:42:03,688 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-11-21 16:42:03,689 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:42:03,689 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-11-21 16:42:03,689 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=343, Unknown=0, NotChecked=0, Total=380 [2022-11-21 16:42:03,695 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 389 out of 516 [2022-11-21 16:42:03,701 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 677 places, 531 transitions, 1949 flow. Second operand has 20 states, 20 states have (on average 392.2) internal successors, (7844), 20 states have internal predecessors, (7844), 0 states have call successors, (0), 0 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 16:42:03,701 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 16:42:03,702 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 389 of 516 [2022-11-21 16:42:03,702 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 16:42:13,265 INFO L130 PetriNetUnfolder]: 2456/10120 cut-off events. [2022-11-21 16:42:13,265 INFO L131 PetriNetUnfolder]: For 37101/37101 co-relation queries the response was YES. [2022-11-21 16:42:13,424 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27644 conditions, 10120 events. 2456/10120 cut-off events. For 37101/37101 co-relation queries the response was YES. Maximal size of possible extension queue 230. Compared 105619 event pairs, 1339 based on Foata normal form. 1/9694 useless extension candidates. Maximal degree in co-relation 27537. Up to 2421 conditions per place. [2022-11-21 16:42:13,454 INFO L137 encePairwiseOnDemand]: 491/516 looper letters, 390 selfloop transitions, 19 changer transitions 112/938 dead transitions. [2022-11-21 16:42:13,454 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 690 places, 938 transitions, 6475 flow [2022-11-21 16:42:13,455 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2022-11-21 16:42:13,455 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56 states. [2022-11-21 16:42:13,473 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 22253 transitions. [2022-11-21 16:42:13,479 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7701065891472868 [2022-11-21 16:42:13,479 INFO L72 ComplementDD]: Start complementDD. Operand 56 states and 22253 transitions. [2022-11-21 16:42:13,479 INFO L73 IsDeterministic]: Start isDeterministic. Operand 56 states and 22253 transitions. [2022-11-21 16:42:13,485 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 16:42:13,485 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 56 states and 22253 transitions. [2022-11-21 16:42:13,642 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 57 states, 56 states have (on average 397.375) internal successors, (22253), 56 states have internal predecessors, (22253), 0 states have call successors, (0), 0 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 16:42:13,657 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 57 states, 57 states have (on average 516.0) internal successors, (29412), 57 states have internal predecessors, (29412), 0 states have call successors, (0), 0 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 16:42:13,661 INFO L81 ComplementDD]: Finished complementDD. Result has 57 states, 57 states have (on average 516.0) internal successors, (29412), 57 states have internal predecessors, (29412), 0 states have call successors, (0), 0 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 16:42:13,661 INFO L175 Difference]: Start difference. First operand has 677 places, 531 transitions, 1949 flow. Second operand 56 states and 22253 transitions. [2022-11-21 16:42:13,662 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 690 places, 938 transitions, 6475 flow [2022-11-21 16:42:13,797 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 652 places, 938 transitions, 5870 flow, removed 228 selfloop flow, removed 38 redundant places. [2022-11-21 16:42:13,808 INFO L231 Difference]: Finished difference. Result has 701 places, 538 transitions, 2144 flow [2022-11-21 16:42:13,809 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=516, PETRI_DIFFERENCE_MINUEND_FLOW=1858, PETRI_DIFFERENCE_MINUEND_PLACES=597, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=531, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=513, PETRI_DIFFERENCE_SUBTRAHEND_STATES=56, PETRI_FLOW=2144, PETRI_PLACES=701, PETRI_TRANSITIONS=538} [2022-11-21 16:42:13,809 INFO L288 CegarLoopForPetriNet]: 463 programPoint places, 238 predicate places. [2022-11-21 16:42:13,809 INFO L495 AbstractCegarLoop]: Abstraction has has 701 places, 538 transitions, 2144 flow [2022-11-21 16:42:13,811 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 392.2) internal successors, (7844), 20 states have internal predecessors, (7844), 0 states have call successors, (0), 0 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 16:42:13,811 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 16:42:13,811 INFO L209 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:42:13,811 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2022-11-21 16:42:13,812 INFO L420 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-21 16:42:13,812 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:42:13,812 INFO L85 PathProgramCache]: Analyzing trace with hash -628366002, now seen corresponding path program 8 times [2022-11-21 16:42:13,812 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:42:13,812 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [259082089] [2022-11-21 16:42:13,813 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:42:13,813 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:42:13,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:42:15,092 INFO L134 CoverageAnalysis]: Checked inductivity of 130 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 130 trivial. 0 not checked. [2022-11-21 16:42:15,093 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:42:15,093 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [259082089] [2022-11-21 16:42:15,093 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [259082089] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:42:15,093 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:42:15,093 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-11-21 16:42:15,093 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [957493590] [2022-11-21 16:42:15,093 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:42:15,094 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-11-21 16:42:15,094 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:42:15,094 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-11-21 16:42:15,094 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=343, Unknown=0, NotChecked=0, Total=380 [2022-11-21 16:42:15,100 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 389 out of 516 [2022-11-21 16:42:15,106 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 701 places, 538 transitions, 2144 flow. Second operand has 20 states, 20 states have (on average 392.2) internal successors, (7844), 20 states have internal predecessors, (7844), 0 states have call successors, (0), 0 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 16:42:15,106 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 16:42:15,106 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 389 of 516 [2022-11-21 16:42:15,106 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 16:42:24,695 INFO L130 PetriNetUnfolder]: 2563/10590 cut-off events. [2022-11-21 16:42:24,696 INFO L131 PetriNetUnfolder]: For 64679/64679 co-relation queries the response was YES. [2022-11-21 16:42:24,941 INFO L83 FinitePrefix]: Finished finitePrefix Result has 32461 conditions, 10590 events. 2563/10590 cut-off events. For 64679/64679 co-relation queries the response was YES. Maximal size of possible extension queue 228. Compared 110912 event pairs, 1377 based on Foata normal form. 1/10121 useless extension candidates. Maximal degree in co-relation 32338. Up to 2408 conditions per place. [2022-11-21 16:42:24,973 INFO L137 encePairwiseOnDemand]: 491/516 looper letters, 421 selfloop transitions, 20 changer transitions 110/968 dead transitions. [2022-11-21 16:42:24,973 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 714 places, 968 transitions, 7953 flow [2022-11-21 16:42:24,974 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2022-11-21 16:42:24,974 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56 states. [2022-11-21 16:42:24,983 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 22252 transitions. [2022-11-21 16:42:24,986 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7700719822812846 [2022-11-21 16:42:24,987 INFO L72 ComplementDD]: Start complementDD. Operand 56 states and 22252 transitions. [2022-11-21 16:42:24,987 INFO L73 IsDeterministic]: Start isDeterministic. Operand 56 states and 22252 transitions. [2022-11-21 16:42:24,990 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 16:42:24,990 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 56 states and 22252 transitions. [2022-11-21 16:42:25,004 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 57 states, 56 states have (on average 397.35714285714283) internal successors, (22252), 56 states have internal predecessors, (22252), 0 states have call successors, (0), 0 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 16:42:25,019 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 57 states, 57 states have (on average 516.0) internal successors, (29412), 57 states have internal predecessors, (29412), 0 states have call successors, (0), 0 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 16:42:25,024 INFO L81 ComplementDD]: Finished complementDD. Result has 57 states, 57 states have (on average 516.0) internal successors, (29412), 57 states have internal predecessors, (29412), 0 states have call successors, (0), 0 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 16:42:25,024 INFO L175 Difference]: Start difference. First operand has 701 places, 538 transitions, 2144 flow. Second operand 56 states and 22252 transitions. [2022-11-21 16:42:25,024 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 714 places, 968 transitions, 7953 flow [2022-11-21 16:42:25,276 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 676 places, 968 transitions, 7033 flow, removed 383 selfloop flow, removed 38 redundant places. [2022-11-21 16:42:25,286 INFO L231 Difference]: Finished difference. Result has 725 places, 545 transitions, 2328 flow [2022-11-21 16:42:25,287 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=516, PETRI_DIFFERENCE_MINUEND_FLOW=2032, PETRI_DIFFERENCE_MINUEND_PLACES=621, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=538, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=519, PETRI_DIFFERENCE_SUBTRAHEND_STATES=56, PETRI_FLOW=2328, PETRI_PLACES=725, PETRI_TRANSITIONS=545} [2022-11-21 16:42:25,287 INFO L288 CegarLoopForPetriNet]: 463 programPoint places, 262 predicate places. [2022-11-21 16:42:25,287 INFO L495 AbstractCegarLoop]: Abstraction has has 725 places, 545 transitions, 2328 flow [2022-11-21 16:42:25,288 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 392.2) internal successors, (7844), 20 states have internal predecessors, (7844), 0 states have call successors, (0), 0 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 16:42:25,288 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 16:42:25,288 INFO L209 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:42:25,288 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2022-11-21 16:42:25,289 INFO L420 AbstractCegarLoop]: === Iteration 51 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-21 16:42:25,289 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:42:25,289 INFO L85 PathProgramCache]: Analyzing trace with hash -1422644718, now seen corresponding path program 9 times [2022-11-21 16:42:25,289 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:42:25,290 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1090141508] [2022-11-21 16:42:25,290 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:42:25,290 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:42:25,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:42:26,856 INFO L134 CoverageAnalysis]: Checked inductivity of 130 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 130 trivial. 0 not checked. [2022-11-21 16:42:26,856 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:42:26,857 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1090141508] [2022-11-21 16:42:26,857 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1090141508] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:42:26,857 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:42:26,857 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-11-21 16:42:26,857 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1960351415] [2022-11-21 16:42:26,857 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:42:26,858 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-11-21 16:42:26,858 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:42:26,858 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-11-21 16:42:26,858 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=343, Unknown=0, NotChecked=0, Total=380 [2022-11-21 16:42:26,862 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 389 out of 516 [2022-11-21 16:42:26,865 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 725 places, 545 transitions, 2328 flow. Second operand has 20 states, 20 states have (on average 392.2) internal successors, (7844), 20 states have internal predecessors, (7844), 0 states have call successors, (0), 0 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 16:42:26,865 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 16:42:26,865 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 389 of 516 [2022-11-21 16:42:26,865 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 16:42:37,658 INFO L130 PetriNetUnfolder]: 2683/10780 cut-off events. [2022-11-21 16:42:37,658 INFO L131 PetriNetUnfolder]: For 91208/91212 co-relation queries the response was YES. [2022-11-21 16:42:37,950 INFO L83 FinitePrefix]: Finished finitePrefix Result has 36489 conditions, 10780 events. 2683/10780 cut-off events. For 91208/91212 co-relation queries the response was YES. Maximal size of possible extension queue 244. Compared 113440 event pairs, 1492 based on Foata normal form. 1/10360 useless extension candidates. Maximal degree in co-relation 36350. Up to 2421 conditions per place. [2022-11-21 16:42:37,991 INFO L137 encePairwiseOnDemand]: 491/516 looper letters, 402 selfloop transitions, 18 changer transitions 116/953 dead transitions. [2022-11-21 16:42:37,992 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 738 places, 953 transitions, 8504 flow [2022-11-21 16:42:37,992 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2022-11-21 16:42:37,992 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56 states. [2022-11-21 16:42:38,008 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 22246 transitions. [2022-11-21 16:42:38,013 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7698643410852714 [2022-11-21 16:42:38,013 INFO L72 ComplementDD]: Start complementDD. Operand 56 states and 22246 transitions. [2022-11-21 16:42:38,013 INFO L73 IsDeterministic]: Start isDeterministic. Operand 56 states and 22246 transitions. [2022-11-21 16:42:38,020 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 16:42:38,021 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 56 states and 22246 transitions. [2022-11-21 16:42:38,051 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 57 states, 56 states have (on average 397.25) internal successors, (22246), 56 states have internal predecessors, (22246), 0 states have call successors, (0), 0 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 16:42:38,081 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 57 states, 57 states have (on average 516.0) internal successors, (29412), 57 states have internal predecessors, (29412), 0 states have call successors, (0), 0 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 16:42:38,087 INFO L81 ComplementDD]: Finished complementDD. Result has 57 states, 57 states have (on average 516.0) internal successors, (29412), 57 states have internal predecessors, (29412), 0 states have call successors, (0), 0 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 16:42:38,087 INFO L175 Difference]: Start difference. First operand has 725 places, 545 transitions, 2328 flow. Second operand 56 states and 22246 transitions. [2022-11-21 16:42:38,087 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 738 places, 953 transitions, 8504 flow [2022-11-21 16:42:38,728 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 699 places, 953 transitions, 7524 flow, removed 414 selfloop flow, removed 39 redundant places. [2022-11-21 16:42:38,740 INFO L231 Difference]: Finished difference. Result has 750 places, 553 transitions, 2567 flow [2022-11-21 16:42:38,741 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=516, PETRI_DIFFERENCE_MINUEND_FLOW=2210, PETRI_DIFFERENCE_MINUEND_PLACES=644, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=545, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=527, PETRI_DIFFERENCE_SUBTRAHEND_STATES=56, PETRI_FLOW=2567, PETRI_PLACES=750, PETRI_TRANSITIONS=553} [2022-11-21 16:42:38,741 INFO L288 CegarLoopForPetriNet]: 463 programPoint places, 287 predicate places. [2022-11-21 16:42:38,741 INFO L495 AbstractCegarLoop]: Abstraction has has 750 places, 553 transitions, 2567 flow [2022-11-21 16:42:38,743 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 392.2) internal successors, (7844), 20 states have internal predecessors, (7844), 0 states have call successors, (0), 0 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 16:42:38,743 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 16:42:38,743 INFO L209 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:42:38,743 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2022-11-21 16:42:38,744 INFO L420 AbstractCegarLoop]: === Iteration 52 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-21 16:42:38,744 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:42:38,744 INFO L85 PathProgramCache]: Analyzing trace with hash 544326444, now seen corresponding path program 10 times [2022-11-21 16:42:38,744 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:42:38,745 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2033369368] [2022-11-21 16:42:38,745 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:42:38,745 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:42:38,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:42:39,896 INFO L134 CoverageAnalysis]: Checked inductivity of 130 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 130 trivial. 0 not checked. [2022-11-21 16:42:39,896 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:42:39,896 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2033369368] [2022-11-21 16:42:39,896 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2033369368] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:42:39,896 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:42:39,897 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-11-21 16:42:39,897 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [530737227] [2022-11-21 16:42:39,897 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:42:39,897 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-11-21 16:42:39,898 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:42:39,898 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-11-21 16:42:39,898 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=343, Unknown=0, NotChecked=0, Total=380 [2022-11-21 16:42:39,904 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 389 out of 516 [2022-11-21 16:42:39,909 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 750 places, 553 transitions, 2567 flow. Second operand has 20 states, 20 states have (on average 392.2) internal successors, (7844), 20 states have internal predecessors, (7844), 0 states have call successors, (0), 0 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 16:42:39,909 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 16:42:39,909 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 389 of 516 [2022-11-21 16:42:39,910 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 16:42:50,017 INFO L130 PetriNetUnfolder]: 2819/11484 cut-off events. [2022-11-21 16:42:50,017 INFO L131 PetriNetUnfolder]: For 131467/131471 co-relation queries the response was YES. [2022-11-21 16:42:50,312 INFO L83 FinitePrefix]: Finished finitePrefix Result has 42505 conditions, 11484 events. 2819/11484 cut-off events. For 131467/131471 co-relation queries the response was YES. Maximal size of possible extension queue 252. Compared 121673 event pairs, 1505 based on Foata normal form. 1/11002 useless extension candidates. Maximal degree in co-relation 42349. Up to 2408 conditions per place. [2022-11-21 16:42:50,342 INFO L137 encePairwiseOnDemand]: 491/516 looper letters, 431 selfloop transitions, 19 changer transitions 114/981 dead transitions. [2022-11-21 16:42:50,342 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 763 places, 981 transitions, 9990 flow [2022-11-21 16:42:50,343 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2022-11-21 16:42:50,343 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56 states. [2022-11-21 16:42:50,509 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 22245 transitions. [2022-11-21 16:42:50,514 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7698297342192691 [2022-11-21 16:42:50,515 INFO L72 ComplementDD]: Start complementDD. Operand 56 states and 22245 transitions. [2022-11-21 16:42:50,515 INFO L73 IsDeterministic]: Start isDeterministic. Operand 56 states and 22245 transitions. [2022-11-21 16:42:50,520 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 16:42:50,520 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 56 states and 22245 transitions. [2022-11-21 16:42:50,534 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 57 states, 56 states have (on average 397.23214285714283) internal successors, (22245), 56 states have internal predecessors, (22245), 0 states have call successors, (0), 0 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 16:42:50,549 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 57 states, 57 states have (on average 516.0) internal successors, (29412), 57 states have internal predecessors, (29412), 0 states have call successors, (0), 0 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 16:42:50,553 INFO L81 ComplementDD]: Finished complementDD. Result has 57 states, 57 states have (on average 516.0) internal successors, (29412), 57 states have internal predecessors, (29412), 0 states have call successors, (0), 0 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 16:42:50,554 INFO L175 Difference]: Start difference. First operand has 750 places, 553 transitions, 2567 flow. Second operand 56 states and 22245 transitions. [2022-11-21 16:42:50,554 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 763 places, 981 transitions, 9990 flow [2022-11-21 16:42:50,992 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 724 places, 981 transitions, 8691 flow, removed 603 selfloop flow, removed 39 redundant places. [2022-11-21 16:42:51,001 INFO L231 Difference]: Finished difference. Result has 775 places, 561 transitions, 2793 flow [2022-11-21 16:42:51,002 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=516, PETRI_DIFFERENCE_MINUEND_FLOW=2426, PETRI_DIFFERENCE_MINUEND_PLACES=669, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=553, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=534, PETRI_DIFFERENCE_SUBTRAHEND_STATES=56, PETRI_FLOW=2793, PETRI_PLACES=775, PETRI_TRANSITIONS=561} [2022-11-21 16:42:51,002 INFO L288 CegarLoopForPetriNet]: 463 programPoint places, 312 predicate places. [2022-11-21 16:42:51,002 INFO L495 AbstractCegarLoop]: Abstraction has has 775 places, 561 transitions, 2793 flow [2022-11-21 16:42:51,003 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 392.2) internal successors, (7844), 20 states have internal predecessors, (7844), 0 states have call successors, (0), 0 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 16:42:51,003 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 16:42:51,003 INFO L209 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:42:51,004 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2022-11-21 16:42:51,004 INFO L420 AbstractCegarLoop]: === Iteration 53 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-21 16:42:51,004 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:42:51,004 INFO L85 PathProgramCache]: Analyzing trace with hash 1301113760, now seen corresponding path program 11 times [2022-11-21 16:42:51,004 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:42:51,004 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [919621894] [2022-11-21 16:42:51,004 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:42:51,004 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:42:51,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:42:52,111 INFO L134 CoverageAnalysis]: Checked inductivity of 130 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 130 trivial. 0 not checked. [2022-11-21 16:42:52,111 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:42:52,111 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [919621894] [2022-11-21 16:42:52,111 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [919621894] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:42:52,111 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:42:52,112 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-11-21 16:42:52,112 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [498890150] [2022-11-21 16:42:52,112 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:42:52,112 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-11-21 16:42:52,112 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:42:52,113 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-11-21 16:42:52,113 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=343, Unknown=0, NotChecked=0, Total=380 [2022-11-21 16:42:52,121 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 389 out of 516 [2022-11-21 16:42:52,125 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 775 places, 561 transitions, 2793 flow. Second operand has 20 states, 20 states have (on average 392.2) internal successors, (7844), 20 states have internal predecessors, (7844), 0 states have call successors, (0), 0 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 16:42:52,125 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 16:42:52,125 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 389 of 516 [2022-11-21 16:42:52,125 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 16:43:02,954 INFO L130 PetriNetUnfolder]: 2980/11748 cut-off events. [2022-11-21 16:43:02,954 INFO L131 PetriNetUnfolder]: For 172550/172554 co-relation queries the response was YES. [2022-11-21 16:43:03,302 INFO L83 FinitePrefix]: Finished finitePrefix Result has 47795 conditions, 11748 events. 2980/11748 cut-off events. For 172550/172554 co-relation queries the response was YES. Maximal size of possible extension queue 275. Compared 125366 event pairs, 1631 based on Foata normal form. 1/11321 useless extension candidates. Maximal degree in co-relation 47623. Up to 2421 conditions per place. [2022-11-21 16:43:03,333 INFO L137 encePairwiseOnDemand]: 491/516 looper letters, 398 selfloop transitions, 20 changer transitions 120/955 dead transitions. [2022-11-21 16:43:03,333 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 788 places, 955 transitions, 10361 flow [2022-11-21 16:43:03,333 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2022-11-21 16:43:03,333 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56 states. [2022-11-21 16:43:03,343 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 22234 transitions. [2022-11-21 16:43:03,347 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7694490586932448 [2022-11-21 16:43:03,347 INFO L72 ComplementDD]: Start complementDD. Operand 56 states and 22234 transitions. [2022-11-21 16:43:03,347 INFO L73 IsDeterministic]: Start isDeterministic. Operand 56 states and 22234 transitions. [2022-11-21 16:43:03,350 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 16:43:03,351 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 56 states and 22234 transitions. [2022-11-21 16:43:03,366 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 57 states, 56 states have (on average 397.0357142857143) internal successors, (22234), 56 states have internal predecessors, (22234), 0 states have call successors, (0), 0 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 16:43:03,381 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 57 states, 57 states have (on average 516.0) internal successors, (29412), 57 states have internal predecessors, (29412), 0 states have call successors, (0), 0 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 16:43:03,386 INFO L81 ComplementDD]: Finished complementDD. Result has 57 states, 57 states have (on average 516.0) internal successors, (29412), 57 states have internal predecessors, (29412), 0 states have call successors, (0), 0 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 16:43:03,386 INFO L175 Difference]: Start difference. First operand has 775 places, 561 transitions, 2793 flow. Second operand 56 states and 22234 transitions. [2022-11-21 16:43:03,386 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 788 places, 955 transitions, 10361 flow [2022-11-21 16:43:04,379 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 748 places, 955 transitions, 9016 flow, removed 626 selfloop flow, removed 40 redundant places. [2022-11-21 16:43:04,387 INFO L231 Difference]: Finished difference. Result has 800 places, 570 transitions, 3061 flow [2022-11-21 16:43:04,388 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=516, PETRI_DIFFERENCE_MINUEND_FLOW=2646, PETRI_DIFFERENCE_MINUEND_PLACES=693, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=561, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=541, PETRI_DIFFERENCE_SUBTRAHEND_STATES=56, PETRI_FLOW=3061, PETRI_PLACES=800, PETRI_TRANSITIONS=570} [2022-11-21 16:43:04,388 INFO L288 CegarLoopForPetriNet]: 463 programPoint places, 337 predicate places. [2022-11-21 16:43:04,388 INFO L495 AbstractCegarLoop]: Abstraction has has 800 places, 570 transitions, 3061 flow [2022-11-21 16:43:04,389 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 392.2) internal successors, (7844), 20 states have internal predecessors, (7844), 0 states have call successors, (0), 0 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 16:43:04,389 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 16:43:04,390 INFO L209 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:43:04,390 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2022-11-21 16:43:04,390 INFO L420 AbstractCegarLoop]: === Iteration 54 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-21 16:43:04,390 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:43:04,390 INFO L85 PathProgramCache]: Analyzing trace with hash 1988531314, now seen corresponding path program 12 times [2022-11-21 16:43:04,390 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:43:04,391 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2079063777] [2022-11-21 16:43:04,391 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:43:04,391 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:43:04,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:43:05,377 INFO L134 CoverageAnalysis]: Checked inductivity of 130 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 130 trivial. 0 not checked. [2022-11-21 16:43:05,378 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:43:05,378 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2079063777] [2022-11-21 16:43:05,378 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2079063777] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:43:05,378 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:43:05,378 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-11-21 16:43:05,378 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1429931633] [2022-11-21 16:43:05,379 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:43:05,379 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-11-21 16:43:05,379 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:43:05,380 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-11-21 16:43:05,380 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=343, Unknown=0, NotChecked=0, Total=380 [2022-11-21 16:43:05,385 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 389 out of 516 [2022-11-21 16:43:05,388 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 800 places, 570 transitions, 3061 flow. Second operand has 20 states, 20 states have (on average 392.2) internal successors, (7844), 20 states have internal predecessors, (7844), 0 states have call successors, (0), 0 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 16:43:05,388 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 16:43:05,388 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 389 of 516 [2022-11-21 16:43:05,388 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand