./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/weaver/chl-word-subst.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version b5237d83 Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_184c7e73-36eb-4bd1-8dca-36a8868ffa63/bin/uautomizer-vX5HgA9Q3a/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_184c7e73-36eb-4bd1-8dca-36a8868ffa63/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_184c7e73-36eb-4bd1-8dca-36a8868ffa63/bin/uautomizer-vX5HgA9Q3a/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_184c7e73-36eb-4bd1-8dca-36a8868ffa63/bin/uautomizer-vX5HgA9Q3a/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/chl-word-subst.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_184c7e73-36eb-4bd1-8dca-36a8868ffa63/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_184c7e73-36eb-4bd1-8dca-36a8868ffa63/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 98c397d7a260fe673f9e4655b5dca942c114f9b11115010a8eef60e068615ab1 --- 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 17:14:54,950 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-21 17:14:54,952 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-21 17:14:54,977 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-21 17:14:54,980 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-21 17:14:54,984 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-21 17:14:54,987 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-21 17:14:54,990 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-21 17:14:54,992 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-21 17:14:54,998 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-21 17:14:55,000 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-21 17:14:55,002 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-21 17:14:55,003 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-21 17:14:55,008 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-21 17:14:55,010 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-21 17:14:55,013 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-21 17:14:55,014 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-21 17:14:55,015 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-21 17:14:55,017 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-21 17:14:55,024 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-21 17:14:55,026 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-21 17:14:55,028 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-21 17:14:55,030 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-21 17:14:55,031 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-21 17:14:55,040 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-21 17:14:55,041 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-21 17:14:55,042 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-21 17:14:55,044 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-21 17:14:55,045 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-21 17:14:55,046 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-21 17:14:55,047 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-21 17:14:55,048 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-21 17:14:55,050 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-21 17:14:55,051 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-21 17:14:55,053 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-21 17:14:55,054 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-21 17:14:55,055 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-21 17:14:55,055 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-21 17:14:55,055 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-21 17:14:55,057 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-21 17:14:55,058 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-21 17:14:55,058 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_184c7e73-36eb-4bd1-8dca-36a8868ffa63/bin/uautomizer-vX5HgA9Q3a/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-11-21 17:14:55,101 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-21 17:14:55,101 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-21 17:14:55,102 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-21 17:14:55,102 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-21 17:14:55,103 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-21 17:14:55,103 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-21 17:14:55,106 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-21 17:14:55,107 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-21 17:14:55,107 INFO L138 SettingsManager]: * Use SBE=true [2022-11-21 17:14:55,107 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-21 17:14:55,108 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-21 17:14:55,108 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-21 17:14:55,109 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-21 17:14:55,109 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-21 17:14:55,109 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-21 17:14:55,109 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-21 17:14:55,110 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-21 17:14:55,110 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-21 17:14:55,110 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-21 17:14:55,110 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-21 17:14:55,111 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-21 17:14:55,111 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-21 17:14:55,111 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-21 17:14:55,111 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-21 17:14:55,112 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-21 17:14:55,112 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-21 17:14:55,112 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-21 17:14:55,112 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-21 17:14:55,113 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-21 17:14:55,113 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-21 17:14:55,113 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-21 17:14:55,114 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-21 17:14:55,114 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-21 17:14:55,114 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_184c7e73-36eb-4bd1-8dca-36a8868ffa63/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_184c7e73-36eb-4bd1-8dca-36a8868ffa63/bin/uautomizer-vX5HgA9Q3a Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 98c397d7a260fe673f9e4655b5dca942c114f9b11115010a8eef60e068615ab1 [2022-11-21 17:14:55,370 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-21 17:14:55,390 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-21 17:14:55,393 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-21 17:14:55,394 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-21 17:14:55,395 INFO L275 PluginConnector]: CDTParser initialized [2022-11-21 17:14:55,396 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_184c7e73-36eb-4bd1-8dca-36a8868ffa63/bin/uautomizer-vX5HgA9Q3a/../../sv-benchmarks/c/weaver/chl-word-subst.wvr.c [2022-11-21 17:14:58,423 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-21 17:14:58,644 INFO L351 CDTParser]: Found 1 translation units. [2022-11-21 17:14:58,645 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_184c7e73-36eb-4bd1-8dca-36a8868ffa63/sv-benchmarks/c/weaver/chl-word-subst.wvr.c [2022-11-21 17:14:58,654 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_184c7e73-36eb-4bd1-8dca-36a8868ffa63/bin/uautomizer-vX5HgA9Q3a/data/450744844/dec0386a6d8545a1a0c717aca5e2d819/FLAG2f8b78850 [2022-11-21 17:14:58,702 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_184c7e73-36eb-4bd1-8dca-36a8868ffa63/bin/uautomizer-vX5HgA9Q3a/data/450744844/dec0386a6d8545a1a0c717aca5e2d819 [2022-11-21 17:14:58,707 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-21 17:14:58,709 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-21 17:14:58,714 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-21 17:14:58,715 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-21 17:14:58,718 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-21 17:14:58,719 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 05:14:58" (1/1) ... [2022-11-21 17:14:58,720 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@66e45023 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:14:58, skipping insertion in model container [2022-11-21 17:14:58,721 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 05:14:58" (1/1) ... [2022-11-21 17:14:58,728 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-21 17:14:58,774 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-21 17:14:58,969 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_184c7e73-36eb-4bd1-8dca-36a8868ffa63/sv-benchmarks/c/weaver/chl-word-subst.wvr.c[3345,3358] [2022-11-21 17:14:58,978 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-21 17:14:58,988 INFO L203 MainTranslator]: Completed pre-run [2022-11-21 17:14:59,022 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_184c7e73-36eb-4bd1-8dca-36a8868ffa63/sv-benchmarks/c/weaver/chl-word-subst.wvr.c[3345,3358] [2022-11-21 17:14:59,026 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-21 17:14:59,040 INFO L208 MainTranslator]: Completed translation [2022-11-21 17:14:59,040 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:14:59 WrapperNode [2022-11-21 17:14:59,041 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-21 17:14:59,042 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-21 17:14:59,042 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-21 17:14:59,042 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-21 17:14:59,049 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:14:59" (1/1) ... [2022-11-21 17:14:59,074 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:14:59" (1/1) ... [2022-11-21 17:14:59,097 INFO L138 Inliner]: procedures = 25, calls = 45, calls flagged for inlining = 9, calls inlined = 13, statements flattened = 176 [2022-11-21 17:14:59,098 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-21 17:14:59,098 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-21 17:14:59,098 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-21 17:14:59,099 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-21 17:14:59,107 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:14:59" (1/1) ... [2022-11-21 17:14:59,107 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:14:59" (1/1) ... [2022-11-21 17:14:59,110 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:14:59" (1/1) ... [2022-11-21 17:14:59,111 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:14:59" (1/1) ... [2022-11-21 17:14:59,120 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:14:59" (1/1) ... [2022-11-21 17:14:59,125 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:14:59" (1/1) ... [2022-11-21 17:14:59,127 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:14:59" (1/1) ... [2022-11-21 17:14:59,129 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:14:59" (1/1) ... [2022-11-21 17:14:59,132 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-21 17:14:59,133 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-21 17:14:59,133 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-21 17:14:59,133 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-21 17:14:59,134 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:14:59" (1/1) ... [2022-11-21 17:14:59,141 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-21 17:14:59,154 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_184c7e73-36eb-4bd1-8dca-36a8868ffa63/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 17:14:59,168 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_184c7e73-36eb-4bd1-8dca-36a8868ffa63/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-21 17:14:59,183 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_184c7e73-36eb-4bd1-8dca-36a8868ffa63/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-21 17:14:59,211 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-21 17:14:59,211 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-21 17:14:59,211 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-21 17:14:59,211 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-21 17:14:59,212 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-11-21 17:14:59,212 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-11-21 17:14:59,212 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-11-21 17:14:59,212 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-11-21 17:14:59,212 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2022-11-21 17:14:59,213 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2022-11-21 17:14:59,213 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-21 17:14:59,213 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-21 17:14:59,213 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-21 17:14:59,213 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-21 17:14:59,214 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-21 17:14:59,215 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 17:14:59,330 INFO L235 CfgBuilder]: Building ICFG [2022-11-21 17:14:59,333 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-21 17:14:59,833 INFO L276 CfgBuilder]: Performing block encoding [2022-11-21 17:14:59,846 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-21 17:14:59,846 INFO L300 CfgBuilder]: Removed 6 assume(true) statements. [2022-11-21 17:14:59,848 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 05:14:59 BoogieIcfgContainer [2022-11-21 17:14:59,849 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-21 17:14:59,851 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-21 17:14:59,852 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-21 17:14:59,855 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-21 17:14:59,855 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.11 05:14:58" (1/3) ... [2022-11-21 17:14:59,856 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@21e09144 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 05:14:59, skipping insertion in model container [2022-11-21 17:14:59,856 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:14:59" (2/3) ... [2022-11-21 17:14:59,857 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@21e09144 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 05:14:59, skipping insertion in model container [2022-11-21 17:14:59,857 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 05:14:59" (3/3) ... [2022-11-21 17:14:59,858 INFO L112 eAbstractionObserver]: Analyzing ICFG chl-word-subst.wvr.c [2022-11-21 17:14:59,867 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-21 17:14:59,878 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-21 17:14:59,878 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-21 17:14:59,878 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-21 17:14:59,997 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2022-11-21 17:15:00,041 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 291 places, 310 transitions, 644 flow [2022-11-21 17:15:00,257 INFO L130 PetriNetUnfolder]: 29/307 cut-off events. [2022-11-21 17:15:00,257 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-11-21 17:15:00,267 INFO L83 FinitePrefix]: Finished finitePrefix Result has 320 conditions, 307 events. 29/307 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 368 event pairs, 0 based on Foata normal form. 0/277 useless extension candidates. Maximal degree in co-relation 241. Up to 3 conditions per place. [2022-11-21 17:15:00,268 INFO L82 GeneralOperation]: Start removeDead. Operand has 291 places, 310 transitions, 644 flow [2022-11-21 17:15:00,275 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 277 places, 296 transitions, 610 flow [2022-11-21 17:15:00,285 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-21 17:15:00,292 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;@56b9ebdc, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-21 17:15:00,292 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2022-11-21 17:15:00,362 INFO L130 PetriNetUnfolder]: 29/295 cut-off events. [2022-11-21 17:15:00,362 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-11-21 17:15:00,363 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 17:15:00,363 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] [2022-11-21 17:15:00,364 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-21 17:15:00,370 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:15:00,371 INFO L85 PathProgramCache]: Analyzing trace with hash -716661319, now seen corresponding path program 1 times [2022-11-21 17:15:00,384 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 17:15:00,385 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1614129788] [2022-11-21 17:15:00,386 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:15:00,386 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 17:15:00,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:15:00,827 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 17:15:00,827 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 17:15:00,828 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1614129788] [2022-11-21 17:15:00,828 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1614129788] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 17:15:00,829 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 17:15:00,829 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-21 17:15:00,831 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [63417681] [2022-11-21 17:15:00,831 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 17:15:00,840 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-21 17:15:00,841 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 17:15:00,887 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-21 17:15:00,891 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-21 17:15:00,899 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 289 out of 310 [2022-11-21 17:15:00,905 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 277 places, 296 transitions, 610 flow. Second operand has 2 states, 2 states have (on average 293.5) internal successors, (587), 2 states have internal predecessors, (587), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:15:00,906 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 17:15:00,906 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 289 of 310 [2022-11-21 17:15:00,907 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 17:15:01,029 INFO L130 PetriNetUnfolder]: 15/282 cut-off events. [2022-11-21 17:15:01,029 INFO L131 PetriNetUnfolder]: For 12/12 co-relation queries the response was YES. [2022-11-21 17:15:01,033 INFO L83 FinitePrefix]: Finished finitePrefix Result has 302 conditions, 282 events. 15/282 cut-off events. For 12/12 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 355 event pairs, 0 based on Foata normal form. 20/279 useless extension candidates. Maximal degree in co-relation 232. Up to 7 conditions per place. [2022-11-21 17:15:01,064 INFO L137 encePairwiseOnDemand]: 296/310 looper letters, 6 selfloop transitions, 0 changer transitions 8/282 dead transitions. [2022-11-21 17:15:01,064 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 278 places, 282 transitions, 594 flow [2022-11-21 17:15:01,065 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-21 17:15:01,068 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2022-11-21 17:15:01,077 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 598 transitions. [2022-11-21 17:15:01,080 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.964516129032258 [2022-11-21 17:15:01,081 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 598 transitions. [2022-11-21 17:15:01,082 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 598 transitions. [2022-11-21 17:15:01,084 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 17:15:01,086 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 598 transitions. [2022-11-21 17:15:01,116 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 299.0) internal successors, (598), 2 states have internal predecessors, (598), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:15:01,129 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 310.0) internal successors, (930), 3 states have internal predecessors, (930), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:15:01,130 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 310.0) internal successors, (930), 3 states have internal predecessors, (930), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:15:01,132 INFO L175 Difference]: Start difference. First operand has 277 places, 296 transitions, 610 flow. Second operand 2 states and 598 transitions. [2022-11-21 17:15:01,133 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 278 places, 282 transitions, 594 flow [2022-11-21 17:15:01,140 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 272 places, 282 transitions, 582 flow, removed 0 selfloop flow, removed 6 redundant places. [2022-11-21 17:15:01,148 INFO L231 Difference]: Finished difference. Result has 272 places, 274 transitions, 554 flow [2022-11-21 17:15:01,150 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=310, PETRI_DIFFERENCE_MINUEND_FLOW=570, PETRI_DIFFERENCE_MINUEND_PLACES=271, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=282, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=282, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=554, PETRI_PLACES=272, PETRI_TRANSITIONS=274} [2022-11-21 17:15:01,157 INFO L288 CegarLoopForPetriNet]: 277 programPoint places, -5 predicate places. [2022-11-21 17:15:01,157 INFO L495 AbstractCegarLoop]: Abstraction has has 272 places, 274 transitions, 554 flow [2022-11-21 17:15:01,158 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 293.5) internal successors, (587), 2 states have internal predecessors, (587), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:15:01,158 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 17:15:01,159 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] [2022-11-21 17:15:01,159 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-21 17:15:01,159 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-21 17:15:01,161 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:15:01,161 INFO L85 PathProgramCache]: Analyzing trace with hash -1658518360, now seen corresponding path program 1 times [2022-11-21 17:15:01,162 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 17:15:01,162 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1265409778] [2022-11-21 17:15:01,163 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:15:01,163 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 17:15:01,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:15:02,019 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 17:15:02,020 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 17:15:02,021 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1265409778] [2022-11-21 17:15:02,021 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1265409778] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 17:15:02,022 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 17:15:02,023 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-21 17:15:02,026 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1792028982] [2022-11-21 17:15:02,026 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 17:15:02,029 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-21 17:15:02,030 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 17:15:02,031 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-21 17:15:02,031 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-21 17:15:02,034 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 245 out of 310 [2022-11-21 17:15:02,036 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 272 places, 274 transitions, 554 flow. Second operand has 5 states, 5 states have (on average 253.0) internal successors, (1265), 5 states have internal predecessors, (1265), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:15:02,036 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 17:15:02,041 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 245 of 310 [2022-11-21 17:15:02,042 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 17:15:02,233 INFO L130 PetriNetUnfolder]: 25/323 cut-off events. [2022-11-21 17:15:02,233 INFO L131 PetriNetUnfolder]: For 7/8 co-relation queries the response was YES. [2022-11-21 17:15:02,237 INFO L83 FinitePrefix]: Finished finitePrefix Result has 397 conditions, 323 events. 25/323 cut-off events. For 7/8 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 647 event pairs, 1 based on Foata normal form. 2/306 useless extension candidates. Maximal degree in co-relation 394. Up to 48 conditions per place. [2022-11-21 17:15:02,239 INFO L137 encePairwiseOnDemand]: 304/310 looper letters, 44 selfloop transitions, 3 changer transitions 4/283 dead transitions. [2022-11-21 17:15:02,239 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 268 places, 283 transitions, 679 flow [2022-11-21 17:15:02,239 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-21 17:15:02,239 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-21 17:15:02,244 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1277 transitions. [2022-11-21 17:15:02,245 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8238709677419355 [2022-11-21 17:15:02,245 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1277 transitions. [2022-11-21 17:15:02,245 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1277 transitions. [2022-11-21 17:15:02,246 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 17:15:02,246 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1277 transitions. [2022-11-21 17:15:02,249 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 255.4) internal successors, (1277), 5 states have internal predecessors, (1277), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:15:02,253 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 310.0) internal successors, (1860), 6 states have internal predecessors, (1860), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:15:02,254 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 310.0) internal successors, (1860), 6 states have internal predecessors, (1860), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:15:02,255 INFO L175 Difference]: Start difference. First operand has 272 places, 274 transitions, 554 flow. Second operand 5 states and 1277 transitions. [2022-11-21 17:15:02,255 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 268 places, 283 transitions, 679 flow [2022-11-21 17:15:02,258 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 268 places, 283 transitions, 679 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-21 17:15:02,265 INFO L231 Difference]: Finished difference. Result has 271 places, 275 transitions, 573 flow [2022-11-21 17:15:02,266 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=310, PETRI_DIFFERENCE_MINUEND_FLOW=554, PETRI_DIFFERENCE_MINUEND_PLACES=264, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=274, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=271, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=573, PETRI_PLACES=271, PETRI_TRANSITIONS=275} [2022-11-21 17:15:02,266 INFO L288 CegarLoopForPetriNet]: 277 programPoint places, -6 predicate places. [2022-11-21 17:15:02,267 INFO L495 AbstractCegarLoop]: Abstraction has has 271 places, 275 transitions, 573 flow [2022-11-21 17:15:02,268 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 253.0) internal successors, (1265), 5 states have internal predecessors, (1265), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:15:02,268 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 17:15:02,268 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] [2022-11-21 17:15:02,269 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-21 17:15:02,269 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-21 17:15:02,270 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:15:02,270 INFO L85 PathProgramCache]: Analyzing trace with hash -1224501124, now seen corresponding path program 1 times [2022-11-21 17:15:02,271 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 17:15:02,271 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1842847299] [2022-11-21 17:15:02,272 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:15:02,273 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 17:15:02,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:15:02,517 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 17:15:02,517 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 17:15:02,517 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1842847299] [2022-11-21 17:15:02,517 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1842847299] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 17:15:02,518 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 17:15:02,518 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-21 17:15:02,519 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [336692202] [2022-11-21 17:15:02,519 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 17:15:02,520 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-21 17:15:02,520 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 17:15:02,521 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-21 17:15:02,521 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-21 17:15:02,522 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 285 out of 310 [2022-11-21 17:15:02,524 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 271 places, 275 transitions, 573 flow. Second operand has 3 states, 3 states have (on average 287.6666666666667) internal successors, (863), 3 states have internal predecessors, (863), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:15:02,524 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 17:15:02,524 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 285 of 310 [2022-11-21 17:15:02,524 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 17:15:02,637 INFO L130 PetriNetUnfolder]: 24/405 cut-off events. [2022-11-21 17:15:02,637 INFO L131 PetriNetUnfolder]: For 18/18 co-relation queries the response was YES. [2022-11-21 17:15:02,639 INFO L83 FinitePrefix]: Finished finitePrefix Result has 486 conditions, 405 events. 24/405 cut-off events. For 18/18 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 1164 event pairs, 6 based on Foata normal form. 0/381 useless extension candidates. Maximal degree in co-relation 479. Up to 25 conditions per place. [2022-11-21 17:15:02,641 INFO L137 encePairwiseOnDemand]: 307/310 looper letters, 14 selfloop transitions, 2 changer transitions 0/281 dead transitions. [2022-11-21 17:15:02,641 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 271 places, 281 transitions, 622 flow [2022-11-21 17:15:02,642 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-21 17:15:02,642 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-21 17:15:02,644 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 872 transitions. [2022-11-21 17:15:02,645 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9376344086021505 [2022-11-21 17:15:02,645 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 872 transitions. [2022-11-21 17:15:02,646 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 872 transitions. [2022-11-21 17:15:02,647 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 17:15:02,647 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 872 transitions. [2022-11-21 17:15:02,649 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 290.6666666666667) internal successors, (872), 3 states have internal predecessors, (872), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:15:02,651 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 310.0) internal successors, (1240), 4 states have internal predecessors, (1240), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:15:02,652 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 310.0) internal successors, (1240), 4 states have internal predecessors, (1240), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:15:02,652 INFO L175 Difference]: Start difference. First operand has 271 places, 275 transitions, 573 flow. Second operand 3 states and 872 transitions. [2022-11-21 17:15:02,653 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 271 places, 281 transitions, 622 flow [2022-11-21 17:15:02,657 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 268 places, 281 transitions, 615 flow, removed 2 selfloop flow, removed 3 redundant places. [2022-11-21 17:15:02,661 INFO L231 Difference]: Finished difference. Result has 269 places, 275 transitions, 574 flow [2022-11-21 17:15:02,662 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=310, PETRI_DIFFERENCE_MINUEND_FLOW=566, PETRI_DIFFERENCE_MINUEND_PLACES=266, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=275, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=273, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=574, PETRI_PLACES=269, PETRI_TRANSITIONS=275} [2022-11-21 17:15:02,664 INFO L288 CegarLoopForPetriNet]: 277 programPoint places, -8 predicate places. [2022-11-21 17:15:02,664 INFO L495 AbstractCegarLoop]: Abstraction has has 269 places, 275 transitions, 574 flow [2022-11-21 17:15:02,665 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 287.6666666666667) internal successors, (863), 3 states have internal predecessors, (863), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:15:02,665 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 17:15:02,665 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] [2022-11-21 17:15:02,665 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-21 17:15:02,666 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-21 17:15:02,666 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:15:02,666 INFO L85 PathProgramCache]: Analyzing trace with hash 737503184, now seen corresponding path program 1 times [2022-11-21 17:15:02,667 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 17:15:02,667 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [995391857] [2022-11-21 17:15:02,667 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:15:02,667 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 17:15:02,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:15:04,326 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 17:15:04,326 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 17:15:04,326 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [995391857] [2022-11-21 17:15:04,326 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [995391857] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 17:15:04,327 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 17:15:04,327 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-21 17:15:04,327 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1275671496] [2022-11-21 17:15:04,327 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 17:15:04,328 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-21 17:15:04,328 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 17:15:04,328 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-21 17:15:04,329 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-21 17:15:04,331 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 228 out of 310 [2022-11-21 17:15:04,334 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 269 places, 275 transitions, 574 flow. Second operand has 7 states, 7 states have (on average 235.28571428571428) internal successors, (1647), 7 states have internal predecessors, (1647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:15:04,334 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 17:15:04,334 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 228 of 310 [2022-11-21 17:15:04,334 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 17:15:05,338 INFO L130 PetriNetUnfolder]: 614/2328 cut-off events. [2022-11-21 17:15:05,338 INFO L131 PetriNetUnfolder]: For 195/207 co-relation queries the response was YES. [2022-11-21 17:15:05,347 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3255 conditions, 2328 events. 614/2328 cut-off events. For 195/207 co-relation queries the response was YES. Maximal size of possible extension queue 131. Compared 18358 event pairs, 302 based on Foata normal form. 2/1922 useless extension candidates. Maximal degree in co-relation 3249. Up to 365 conditions per place. [2022-11-21 17:15:05,356 INFO L137 encePairwiseOnDemand]: 304/310 looper letters, 87 selfloop transitions, 3 changer transitions 11/317 dead transitions. [2022-11-21 17:15:05,356 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 275 places, 317 transitions, 876 flow [2022-11-21 17:15:05,357 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-21 17:15:05,357 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-21 17:15:05,359 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1698 transitions. [2022-11-21 17:15:05,360 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7824884792626728 [2022-11-21 17:15:05,361 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1698 transitions. [2022-11-21 17:15:05,361 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1698 transitions. [2022-11-21 17:15:05,362 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 17:15:05,370 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1698 transitions. [2022-11-21 17:15:05,374 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 242.57142857142858) internal successors, (1698), 7 states have internal predecessors, (1698), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:15:05,378 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 310.0) internal successors, (2480), 8 states have internal predecessors, (2480), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:15:05,379 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 310.0) internal successors, (2480), 8 states have internal predecessors, (2480), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:15:05,380 INFO L175 Difference]: Start difference. First operand has 269 places, 275 transitions, 574 flow. Second operand 7 states and 1698 transitions. [2022-11-21 17:15:05,380 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 275 places, 317 transitions, 876 flow [2022-11-21 17:15:05,383 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 273 places, 317 transitions, 872 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-21 17:15:05,387 INFO L231 Difference]: Finished difference. Result has 278 places, 277 transitions, 595 flow [2022-11-21 17:15:05,388 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=310, PETRI_DIFFERENCE_MINUEND_FLOW=570, PETRI_DIFFERENCE_MINUEND_PLACES=267, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=275, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=272, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=595, PETRI_PLACES=278, PETRI_TRANSITIONS=277} [2022-11-21 17:15:05,391 INFO L288 CegarLoopForPetriNet]: 277 programPoint places, 1 predicate places. [2022-11-21 17:15:05,391 INFO L495 AbstractCegarLoop]: Abstraction has has 278 places, 277 transitions, 595 flow [2022-11-21 17:15:05,392 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 235.28571428571428) internal successors, (1647), 7 states have internal predecessors, (1647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:15:05,392 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 17:15:05,393 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] [2022-11-21 17:15:05,393 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-21 17:15:05,393 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-21 17:15:05,394 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:15:05,394 INFO L85 PathProgramCache]: Analyzing trace with hash -85583686, now seen corresponding path program 2 times [2022-11-21 17:15:05,394 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 17:15:05,395 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1965860348] [2022-11-21 17:15:05,395 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:15:05,395 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 17:15:05,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:15:06,535 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 17:15:06,535 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 17:15:06,535 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1965860348] [2022-11-21 17:15:06,535 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1965860348] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 17:15:06,536 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 17:15:06,536 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-21 17:15:06,536 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [932179189] [2022-11-21 17:15:06,536 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 17:15:06,537 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-21 17:15:06,537 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 17:15:06,537 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-21 17:15:06,537 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-21 17:15:06,541 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 228 out of 310 [2022-11-21 17:15:06,544 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 278 places, 277 transitions, 595 flow. Second operand has 7 states, 7 states have (on average 235.28571428571428) internal successors, (1647), 7 states have internal predecessors, (1647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:15:06,544 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 17:15:06,544 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 228 of 310 [2022-11-21 17:15:06,544 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 17:15:07,383 INFO L130 PetriNetUnfolder]: 565/2889 cut-off events. [2022-11-21 17:15:07,383 INFO L131 PetriNetUnfolder]: For 436/436 co-relation queries the response was YES. [2022-11-21 17:15:07,391 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4218 conditions, 2889 events. 565/2889 cut-off events. For 436/436 co-relation queries the response was YES. Maximal size of possible extension queue 122. Compared 26008 event pairs, 179 based on Foata normal form. 2/2602 useless extension candidates. Maximal degree in co-relation 4207. Up to 421 conditions per place. [2022-11-21 17:15:07,401 INFO L137 encePairwiseOnDemand]: 304/310 looper letters, 86 selfloop transitions, 2 changer transitions 13/317 dead transitions. [2022-11-21 17:15:07,401 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 282 places, 317 transitions, 908 flow [2022-11-21 17:15:07,401 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-21 17:15:07,401 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-21 17:15:07,404 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1697 transitions. [2022-11-21 17:15:07,405 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7820276497695853 [2022-11-21 17:15:07,405 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1697 transitions. [2022-11-21 17:15:07,405 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1697 transitions. [2022-11-21 17:15:07,406 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 17:15:07,406 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1697 transitions. [2022-11-21 17:15:07,410 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 242.42857142857142) internal successors, (1697), 7 states have internal predecessors, (1697), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:15:07,414 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 310.0) internal successors, (2480), 8 states have internal predecessors, (2480), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:15:07,417 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 310.0) internal successors, (2480), 8 states have internal predecessors, (2480), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:15:07,418 INFO L175 Difference]: Start difference. First operand has 278 places, 277 transitions, 595 flow. Second operand 7 states and 1697 transitions. [2022-11-21 17:15:07,418 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 282 places, 317 transitions, 908 flow [2022-11-21 17:15:07,424 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 279 places, 317 transitions, 897 flow, removed 5 selfloop flow, removed 3 redundant places. [2022-11-21 17:15:07,429 INFO L231 Difference]: Finished difference. Result has 284 places, 277 transitions, 605 flow [2022-11-21 17:15:07,429 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=310, PETRI_DIFFERENCE_MINUEND_FLOW=590, PETRI_DIFFERENCE_MINUEND_PLACES=273, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=277, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=275, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=605, PETRI_PLACES=284, PETRI_TRANSITIONS=277} [2022-11-21 17:15:07,432 INFO L288 CegarLoopForPetriNet]: 277 programPoint places, 7 predicate places. [2022-11-21 17:15:07,433 INFO L495 AbstractCegarLoop]: Abstraction has has 284 places, 277 transitions, 605 flow [2022-11-21 17:15:07,433 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 235.28571428571428) internal successors, (1647), 7 states have internal predecessors, (1647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:15:07,434 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 17:15:07,434 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] [2022-11-21 17:15:07,434 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-21 17:15:07,434 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-21 17:15:07,435 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:15:07,435 INFO L85 PathProgramCache]: Analyzing trace with hash 117117544, now seen corresponding path program 3 times [2022-11-21 17:15:07,436 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 17:15:07,436 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [141873805] [2022-11-21 17:15:07,436 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:15:07,436 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 17:15:07,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:15:08,546 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 17:15:08,546 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 17:15:08,546 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [141873805] [2022-11-21 17:15:08,547 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [141873805] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 17:15:08,547 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 17:15:08,547 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-21 17:15:08,547 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1786306156] [2022-11-21 17:15:08,548 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 17:15:08,548 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-21 17:15:08,548 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 17:15:08,549 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-21 17:15:08,549 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-11-21 17:15:08,552 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 228 out of 310 [2022-11-21 17:15:08,554 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 284 places, 277 transitions, 605 flow. Second operand has 7 states, 7 states have (on average 235.28571428571428) internal successors, (1647), 7 states have internal predecessors, (1647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:15:08,555 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 17:15:08,555 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 228 of 310 [2022-11-21 17:15:08,555 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 17:15:09,470 INFO L130 PetriNetUnfolder]: 622/3268 cut-off events. [2022-11-21 17:15:09,470 INFO L131 PetriNetUnfolder]: For 766/770 co-relation queries the response was YES. [2022-11-21 17:15:09,481 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4775 conditions, 3268 events. 622/3268 cut-off events. For 766/770 co-relation queries the response was YES. Maximal size of possible extension queue 139. Compared 30482 event pairs, 337 based on Foata normal form. 4/2858 useless extension candidates. Maximal degree in co-relation 4761. Up to 676 conditions per place. [2022-11-21 17:15:09,491 INFO L137 encePairwiseOnDemand]: 304/310 looper letters, 88 selfloop transitions, 3 changer transitions 15/322 dead transitions. [2022-11-21 17:15:09,492 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 286 places, 322 transitions, 969 flow [2022-11-21 17:15:09,492 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-21 17:15:09,492 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-21 17:15:09,495 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1700 transitions. [2022-11-21 17:15:09,496 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.783410138248848 [2022-11-21 17:15:09,496 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1700 transitions. [2022-11-21 17:15:09,496 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1700 transitions. [2022-11-21 17:15:09,497 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 17:15:09,498 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1700 transitions. [2022-11-21 17:15:09,501 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 242.85714285714286) internal successors, (1700), 7 states have internal predecessors, (1700), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:15:09,505 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 310.0) internal successors, (2480), 8 states have internal predecessors, (2480), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:15:09,506 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 310.0) internal successors, (2480), 8 states have internal predecessors, (2480), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:15:09,506 INFO L175 Difference]: Start difference. First operand has 284 places, 277 transitions, 605 flow. Second operand 7 states and 1700 transitions. [2022-11-21 17:15:09,506 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 286 places, 322 transitions, 969 flow [2022-11-21 17:15:09,513 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 281 places, 322 transitions, 932 flow, removed 17 selfloop flow, removed 5 redundant places. [2022-11-21 17:15:09,517 INFO L231 Difference]: Finished difference. Result has 286 places, 278 transitions, 624 flow [2022-11-21 17:15:09,517 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=310, PETRI_DIFFERENCE_MINUEND_FLOW=594, PETRI_DIFFERENCE_MINUEND_PLACES=275, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=277, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=274, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=624, PETRI_PLACES=286, PETRI_TRANSITIONS=278} [2022-11-21 17:15:09,518 INFO L288 CegarLoopForPetriNet]: 277 programPoint places, 9 predicate places. [2022-11-21 17:15:09,518 INFO L495 AbstractCegarLoop]: Abstraction has has 286 places, 278 transitions, 624 flow [2022-11-21 17:15:09,519 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 235.28571428571428) internal successors, (1647), 7 states have internal predecessors, (1647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:15:09,519 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 17:15:09,520 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] [2022-11-21 17:15:09,520 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-21 17:15:09,520 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-21 17:15:09,521 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:15:09,521 INFO L85 PathProgramCache]: Analyzing trace with hash -1055113080, now seen corresponding path program 4 times [2022-11-21 17:15:09,521 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 17:15:09,521 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [174207882] [2022-11-21 17:15:09,521 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:15:09,522 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 17:15:09,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:15:10,663 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 17:15:10,664 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 17:15:10,664 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [174207882] [2022-11-21 17:15:10,665 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [174207882] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 17:15:10,665 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 17:15:10,665 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-21 17:15:10,672 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [308747656] [2022-11-21 17:15:10,672 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 17:15:10,673 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-21 17:15:10,673 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 17:15:10,673 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-21 17:15:10,674 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-21 17:15:10,676 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 228 out of 310 [2022-11-21 17:15:10,677 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 286 places, 278 transitions, 624 flow. Second operand has 7 states, 7 states have (on average 235.28571428571428) internal successors, (1647), 7 states have internal predecessors, (1647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:15:10,678 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 17:15:10,678 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 228 of 310 [2022-11-21 17:15:10,678 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 17:15:11,813 INFO L130 PetriNetUnfolder]: 632/3396 cut-off events. [2022-11-21 17:15:11,814 INFO L131 PetriNetUnfolder]: For 1232/1232 co-relation queries the response was YES. [2022-11-21 17:15:11,825 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5172 conditions, 3396 events. 632/3396 cut-off events. For 1232/1232 co-relation queries the response was YES. Maximal size of possible extension queue 159. Compared 32478 event pairs, 382 based on Foata normal form. 2/3010 useless extension candidates. Maximal degree in co-relation 5157. Up to 837 conditions per place. [2022-11-21 17:15:11,839 INFO L137 encePairwiseOnDemand]: 304/310 looper letters, 91 selfloop transitions, 4 changer transitions 12/323 dead transitions. [2022-11-21 17:15:11,839 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 289 places, 323 transitions, 981 flow [2022-11-21 17:15:11,839 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-21 17:15:11,840 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-21 17:15:11,843 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1701 transitions. [2022-11-21 17:15:11,844 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7838709677419354 [2022-11-21 17:15:11,844 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1701 transitions. [2022-11-21 17:15:11,844 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1701 transitions. [2022-11-21 17:15:11,845 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 17:15:11,845 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1701 transitions. [2022-11-21 17:15:11,849 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 243.0) internal successors, (1701), 7 states have internal predecessors, (1701), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:15:11,853 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 310.0) internal successors, (2480), 8 states have internal predecessors, (2480), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:15:11,854 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 310.0) internal successors, (2480), 8 states have internal predecessors, (2480), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:15:11,854 INFO L175 Difference]: Start difference. First operand has 286 places, 278 transitions, 624 flow. Second operand 7 states and 1701 transitions. [2022-11-21 17:15:11,854 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 289 places, 323 transitions, 981 flow [2022-11-21 17:15:11,866 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 284 places, 323 transitions, 948 flow, removed 14 selfloop flow, removed 5 redundant places. [2022-11-21 17:15:11,873 INFO L231 Difference]: Finished difference. Result has 289 places, 279 transitions, 640 flow [2022-11-21 17:15:11,873 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=310, PETRI_DIFFERENCE_MINUEND_FLOW=611, PETRI_DIFFERENCE_MINUEND_PLACES=278, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=278, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=274, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=640, PETRI_PLACES=289, PETRI_TRANSITIONS=279} [2022-11-21 17:15:11,874 INFO L288 CegarLoopForPetriNet]: 277 programPoint places, 12 predicate places. [2022-11-21 17:15:11,875 INFO L495 AbstractCegarLoop]: Abstraction has has 289 places, 279 transitions, 640 flow [2022-11-21 17:15:11,876 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 235.28571428571428) internal successors, (1647), 7 states have internal predecessors, (1647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:15:11,876 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 17:15:11,876 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] [2022-11-21 17:15:11,876 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-21 17:15:11,876 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-21 17:15:11,877 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:15:11,877 INFO L85 PathProgramCache]: Analyzing trace with hash -1495062252, now seen corresponding path program 5 times [2022-11-21 17:15:11,877 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 17:15:11,877 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1035573045] [2022-11-21 17:15:11,877 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:15:11,878 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 17:15:11,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:15:13,092 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 17:15:13,092 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 17:15:13,092 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1035573045] [2022-11-21 17:15:13,092 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1035573045] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 17:15:13,092 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 17:15:13,093 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-21 17:15:13,093 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1651804280] [2022-11-21 17:15:13,093 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 17:15:13,093 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-21 17:15:13,094 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 17:15:13,094 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-21 17:15:13,094 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-21 17:15:13,097 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 228 out of 310 [2022-11-21 17:15:13,099 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 289 places, 279 transitions, 640 flow. Second operand has 7 states, 7 states have (on average 235.28571428571428) internal successors, (1647), 7 states have internal predecessors, (1647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:15:13,099 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 17:15:13,099 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 228 of 310 [2022-11-21 17:15:13,099 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 17:15:14,094 INFO L130 PetriNetUnfolder]: 649/3483 cut-off events. [2022-11-21 17:15:14,094 INFO L131 PetriNetUnfolder]: For 1357/1361 co-relation queries the response was YES. [2022-11-21 17:15:14,107 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5234 conditions, 3483 events. 649/3483 cut-off events. For 1357/1361 co-relation queries the response was YES. Maximal size of possible extension queue 159. Compared 33384 event pairs, 373 based on Foata normal form. 4/3040 useless extension candidates. Maximal degree in co-relation 5218. Up to 765 conditions per place. [2022-11-21 17:15:14,116 INFO L137 encePairwiseOnDemand]: 304/310 looper letters, 93 selfloop transitions, 4 changer transitions 12/325 dead transitions. [2022-11-21 17:15:14,116 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 292 places, 325 transitions, 999 flow [2022-11-21 17:15:14,117 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-21 17:15:14,117 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-21 17:15:14,119 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1702 transitions. [2022-11-21 17:15:14,120 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.784331797235023 [2022-11-21 17:15:14,121 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1702 transitions. [2022-11-21 17:15:14,121 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1702 transitions. [2022-11-21 17:15:14,122 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 17:15:14,122 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1702 transitions. [2022-11-21 17:15:14,125 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 243.14285714285714) internal successors, (1702), 7 states have internal predecessors, (1702), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:15:14,129 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 310.0) internal successors, (2480), 8 states have internal predecessors, (2480), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:15:14,131 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 310.0) internal successors, (2480), 8 states have internal predecessors, (2480), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:15:14,131 INFO L175 Difference]: Start difference. First operand has 289 places, 279 transitions, 640 flow. Second operand 7 states and 1702 transitions. [2022-11-21 17:15:14,132 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 292 places, 325 transitions, 999 flow [2022-11-21 17:15:14,139 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 288 places, 325 transitions, 974 flow, removed 11 selfloop flow, removed 4 redundant places. [2022-11-21 17:15:14,143 INFO L231 Difference]: Finished difference. Result has 292 places, 280 transitions, 658 flow [2022-11-21 17:15:14,144 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=310, PETRI_DIFFERENCE_MINUEND_FLOW=631, PETRI_DIFFERENCE_MINUEND_PLACES=282, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=279, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=275, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=658, PETRI_PLACES=292, PETRI_TRANSITIONS=280} [2022-11-21 17:15:14,146 INFO L288 CegarLoopForPetriNet]: 277 programPoint places, 15 predicate places. [2022-11-21 17:15:14,146 INFO L495 AbstractCegarLoop]: Abstraction has has 292 places, 280 transitions, 658 flow [2022-11-21 17:15:14,162 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 235.28571428571428) internal successors, (1647), 7 states have internal predecessors, (1647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:15:14,162 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 17:15:14,163 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] [2022-11-21 17:15:14,163 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-21 17:15:14,163 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-21 17:15:14,163 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:15:14,164 INFO L85 PathProgramCache]: Analyzing trace with hash 1729495298, now seen corresponding path program 6 times [2022-11-21 17:15:14,164 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 17:15:14,164 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1978736929] [2022-11-21 17:15:14,164 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:15:14,164 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 17:15:14,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:15:15,122 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 17:15:15,122 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 17:15:15,122 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1978736929] [2022-11-21 17:15:15,123 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1978736929] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 17:15:15,123 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 17:15:15,123 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-21 17:15:15,123 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1050645708] [2022-11-21 17:15:15,123 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 17:15:15,124 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-21 17:15:15,124 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 17:15:15,125 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-21 17:15:15,125 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-11-21 17:15:15,127 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 228 out of 310 [2022-11-21 17:15:15,129 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 292 places, 280 transitions, 658 flow. Second operand has 7 states, 7 states have (on average 235.28571428571428) internal successors, (1647), 7 states have internal predecessors, (1647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:15:15,130 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 17:15:15,130 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 228 of 310 [2022-11-21 17:15:15,130 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 17:15:15,975 INFO L130 PetriNetUnfolder]: 623/3279 cut-off events. [2022-11-21 17:15:15,975 INFO L131 PetriNetUnfolder]: For 1541/1541 co-relation queries the response was YES. [2022-11-21 17:15:15,986 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5065 conditions, 3279 events. 623/3279 cut-off events. For 1541/1541 co-relation queries the response was YES. Maximal size of possible extension queue 156. Compared 31094 event pairs, 386 based on Foata normal form. 2/2891 useless extension candidates. Maximal degree in co-relation 5048. Up to 837 conditions per place. [2022-11-21 17:15:15,995 INFO L137 encePairwiseOnDemand]: 304/310 looper letters, 77 selfloop transitions, 2 changer transitions 18/313 dead transitions. [2022-11-21 17:15:15,995 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 294 places, 313 transitions, 952 flow [2022-11-21 17:15:15,996 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-21 17:15:15,996 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-21 17:15:15,999 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1691 transitions. [2022-11-21 17:15:16,000 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7792626728110599 [2022-11-21 17:15:16,000 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1691 transitions. [2022-11-21 17:15:16,000 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1691 transitions. [2022-11-21 17:15:16,002 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 17:15:16,002 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1691 transitions. [2022-11-21 17:15:16,005 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 241.57142857142858) internal successors, (1691), 7 states have internal predecessors, (1691), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:15:16,010 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 310.0) internal successors, (2480), 8 states have internal predecessors, (2480), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:15:16,014 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 310.0) internal successors, (2480), 8 states have internal predecessors, (2480), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:15:16,015 INFO L175 Difference]: Start difference. First operand has 292 places, 280 transitions, 658 flow. Second operand 7 states and 1691 transitions. [2022-11-21 17:15:16,015 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 294 places, 313 transitions, 952 flow [2022-11-21 17:15:16,023 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 289 places, 313 transitions, 932 flow, removed 8 selfloop flow, removed 5 redundant places. [2022-11-21 17:15:16,027 INFO L231 Difference]: Finished difference. Result has 293 places, 279 transitions, 650 flow [2022-11-21 17:15:16,028 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=310, PETRI_DIFFERENCE_MINUEND_FLOW=649, PETRI_DIFFERENCE_MINUEND_PLACES=283, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=280, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=278, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=650, PETRI_PLACES=293, PETRI_TRANSITIONS=279} [2022-11-21 17:15:16,029 INFO L288 CegarLoopForPetriNet]: 277 programPoint places, 16 predicate places. [2022-11-21 17:15:16,030 INFO L495 AbstractCegarLoop]: Abstraction has has 293 places, 279 transitions, 650 flow [2022-11-21 17:15:16,030 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 235.28571428571428) internal successors, (1647), 7 states have internal predecessors, (1647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:15:16,030 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 17:15:16,031 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 17:15:16,031 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-21 17:15:16,031 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-21 17:15:16,032 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:15:16,032 INFO L85 PathProgramCache]: Analyzing trace with hash 1818442278, now seen corresponding path program 1 times [2022-11-21 17:15:16,032 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 17:15:16,032 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [663707117] [2022-11-21 17:15:16,032 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:15:16,033 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 17:15:16,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:15:16,159 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 17:15:16,160 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 17:15:16,160 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [663707117] [2022-11-21 17:15:16,165 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [663707117] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 17:15:16,165 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 17:15:16,165 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-21 17:15:16,166 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [729454591] [2022-11-21 17:15:16,166 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 17:15:16,167 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-21 17:15:16,168 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 17:15:16,169 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-21 17:15:16,169 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-21 17:15:16,170 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 285 out of 310 [2022-11-21 17:15:16,171 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 293 places, 279 transitions, 650 flow. Second operand has 3 states, 3 states have (on average 287.6666666666667) internal successors, (863), 3 states have internal predecessors, (863), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:15:16,172 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 17:15:16,172 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 285 of 310 [2022-11-21 17:15:16,172 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 17:15:16,419 INFO L130 PetriNetUnfolder]: 137/1380 cut-off events. [2022-11-21 17:15:16,419 INFO L131 PetriNetUnfolder]: For 339/363 co-relation queries the response was YES. [2022-11-21 17:15:16,424 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1792 conditions, 1380 events. 137/1380 cut-off events. For 339/363 co-relation queries the response was YES. Maximal size of possible extension queue 75. Compared 10340 event pairs, 54 based on Foata normal form. 0/1241 useless extension candidates. Maximal degree in co-relation 1775. Up to 144 conditions per place. [2022-11-21 17:15:16,427 INFO L137 encePairwiseOnDemand]: 307/310 looper letters, 12 selfloop transitions, 2 changer transitions 0/283 dead transitions. [2022-11-21 17:15:16,427 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 291 places, 283 transitions, 689 flow [2022-11-21 17:15:16,428 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-21 17:15:16,428 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-21 17:15:16,430 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 870 transitions. [2022-11-21 17:15:16,431 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9354838709677419 [2022-11-21 17:15:16,431 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 870 transitions. [2022-11-21 17:15:16,431 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 870 transitions. [2022-11-21 17:15:16,432 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 17:15:16,432 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 870 transitions. [2022-11-21 17:15:16,434 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 290.0) internal successors, (870), 3 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:15:16,436 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 310.0) internal successors, (1240), 4 states have internal predecessors, (1240), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:15:16,436 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 310.0) internal successors, (1240), 4 states have internal predecessors, (1240), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:15:16,437 INFO L175 Difference]: Start difference. First operand has 293 places, 279 transitions, 650 flow. Second operand 3 states and 870 transitions. [2022-11-21 17:15:16,437 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 291 places, 283 transitions, 689 flow [2022-11-21 17:15:16,440 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 287 places, 283 transitions, 677 flow, removed 5 selfloop flow, removed 4 redundant places. [2022-11-21 17:15:16,444 INFO L231 Difference]: Finished difference. Result has 288 places, 279 transitions, 646 flow [2022-11-21 17:15:16,445 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=310, PETRI_DIFFERENCE_MINUEND_FLOW=638, PETRI_DIFFERENCE_MINUEND_PLACES=285, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=279, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=277, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=646, PETRI_PLACES=288, PETRI_TRANSITIONS=279} [2022-11-21 17:15:16,447 INFO L288 CegarLoopForPetriNet]: 277 programPoint places, 11 predicate places. [2022-11-21 17:15:16,447 INFO L495 AbstractCegarLoop]: Abstraction has has 288 places, 279 transitions, 646 flow [2022-11-21 17:15:16,448 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 287.6666666666667) internal successors, (863), 3 states have internal predecessors, (863), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:15:16,448 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 17:15:16,448 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 17:15:16,448 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-21 17:15:16,449 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-21 17:15:16,452 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:15:16,452 INFO L85 PathProgramCache]: Analyzing trace with hash 2106596104, now seen corresponding path program 1 times [2022-11-21 17:15:16,453 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 17:15:16,455 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [173014014] [2022-11-21 17:15:16,455 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:15:16,455 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 17:15:16,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:15:16,577 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 17:15:16,577 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 17:15:16,577 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [173014014] [2022-11-21 17:15:16,578 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [173014014] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 17:15:16,578 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 17:15:16,578 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-21 17:15:16,578 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [7520732] [2022-11-21 17:15:16,578 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 17:15:16,579 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-21 17:15:16,579 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 17:15:16,580 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-21 17:15:16,580 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-21 17:15:16,581 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 285 out of 310 [2022-11-21 17:15:16,582 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 288 places, 279 transitions, 646 flow. Second operand has 3 states, 3 states have (on average 287.6666666666667) internal successors, (863), 3 states have internal predecessors, (863), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:15:16,582 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 17:15:16,583 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 285 of 310 [2022-11-21 17:15:16,583 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 17:15:16,787 INFO L130 PetriNetUnfolder]: 61/1085 cut-off events. [2022-11-21 17:15:16,787 INFO L131 PetriNetUnfolder]: For 187/234 co-relation queries the response was YES. [2022-11-21 17:15:16,791 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1368 conditions, 1085 events. 61/1085 cut-off events. For 187/234 co-relation queries the response was YES. Maximal size of possible extension queue 47. Compared 7196 event pairs, 22 based on Foata normal form. 1/1009 useless extension candidates. Maximal degree in co-relation 1353. Up to 84 conditions per place. [2022-11-21 17:15:16,794 INFO L137 encePairwiseOnDemand]: 307/310 looper letters, 13 selfloop transitions, 2 changer transitions 0/284 dead transitions. [2022-11-21 17:15:16,795 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 290 places, 284 transitions, 690 flow [2022-11-21 17:15:16,795 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-21 17:15:16,795 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-21 17:15:16,797 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 871 transitions. [2022-11-21 17:15:16,797 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9365591397849462 [2022-11-21 17:15:16,797 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 871 transitions. [2022-11-21 17:15:16,798 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 871 transitions. [2022-11-21 17:15:16,798 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 17:15:16,799 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 871 transitions. [2022-11-21 17:15:16,800 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 290.3333333333333) internal successors, (871), 3 states have internal predecessors, (871), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:15:16,802 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 310.0) internal successors, (1240), 4 states have internal predecessors, (1240), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:15:16,803 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 310.0) internal successors, (1240), 4 states have internal predecessors, (1240), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:15:16,803 INFO L175 Difference]: Start difference. First operand has 288 places, 279 transitions, 646 flow. Second operand 3 states and 871 transitions. [2022-11-21 17:15:16,803 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 290 places, 284 transitions, 690 flow [2022-11-21 17:15:16,806 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 288 places, 284 transitions, 686 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-21 17:15:16,810 INFO L231 Difference]: Finished difference. Result has 289 places, 279 transitions, 650 flow [2022-11-21 17:15:16,810 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=310, PETRI_DIFFERENCE_MINUEND_FLOW=642, PETRI_DIFFERENCE_MINUEND_PLACES=286, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=279, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=277, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=650, PETRI_PLACES=289, PETRI_TRANSITIONS=279} [2022-11-21 17:15:16,811 INFO L288 CegarLoopForPetriNet]: 277 programPoint places, 12 predicate places. [2022-11-21 17:15:16,811 INFO L495 AbstractCegarLoop]: Abstraction has has 289 places, 279 transitions, 650 flow [2022-11-21 17:15:16,812 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 287.6666666666667) internal successors, (863), 3 states have internal predecessors, (863), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:15:16,812 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 17:15:16,812 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 17:15:16,812 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-21 17:15:16,812 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-21 17:15:16,813 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:15:16,813 INFO L85 PathProgramCache]: Analyzing trace with hash -916810068, now seen corresponding path program 1 times [2022-11-21 17:15:16,813 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 17:15:16,813 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1240109022] [2022-11-21 17:15:16,814 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:15:16,814 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 17:15:16,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:15:16,998 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 17:15:16,998 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 17:15:16,998 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1240109022] [2022-11-21 17:15:16,999 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1240109022] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 17:15:16,999 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 17:15:16,999 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-21 17:15:16,999 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1331526951] [2022-11-21 17:15:16,999 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 17:15:17,000 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-21 17:15:17,000 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 17:15:17,001 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-21 17:15:17,001 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-21 17:15:17,002 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 274 out of 310 [2022-11-21 17:15:17,003 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 289 places, 279 transitions, 650 flow. Second operand has 4 states, 4 states have (on average 278.0) internal successors, (1112), 4 states have internal predecessors, (1112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:15:17,003 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 17:15:17,004 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 274 of 310 [2022-11-21 17:15:17,004 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 17:15:17,583 INFO L130 PetriNetUnfolder]: 346/3193 cut-off events. [2022-11-21 17:15:17,583 INFO L131 PetriNetUnfolder]: For 1203/1233 co-relation queries the response was YES. [2022-11-21 17:15:17,597 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4446 conditions, 3193 events. 346/3193 cut-off events. For 1203/1233 co-relation queries the response was YES. Maximal size of possible extension queue 133. Compared 30782 event pairs, 95 based on Foata normal form. 4/2921 useless extension candidates. Maximal degree in co-relation 4430. Up to 237 conditions per place. [2022-11-21 17:15:17,611 INFO L137 encePairwiseOnDemand]: 306/310 looper letters, 38 selfloop transitions, 6 changer transitions 4/302 dead transitions. [2022-11-21 17:15:17,612 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 292 places, 302 transitions, 847 flow [2022-11-21 17:15:17,612 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-21 17:15:17,612 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-11-21 17:15:17,614 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1141 transitions. [2022-11-21 17:15:17,615 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9201612903225806 [2022-11-21 17:15:17,615 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1141 transitions. [2022-11-21 17:15:17,615 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1141 transitions. [2022-11-21 17:15:17,616 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 17:15:17,616 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1141 transitions. [2022-11-21 17:15:17,619 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 285.25) internal successors, (1141), 4 states have internal predecessors, (1141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:15:17,621 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 310.0) internal successors, (1550), 5 states have internal predecessors, (1550), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:15:17,622 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 310.0) internal successors, (1550), 5 states have internal predecessors, (1550), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:15:17,622 INFO L175 Difference]: Start difference. First operand has 289 places, 279 transitions, 650 flow. Second operand 4 states and 1141 transitions. [2022-11-21 17:15:17,622 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 292 places, 302 transitions, 847 flow [2022-11-21 17:15:17,627 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 290 places, 302 transitions, 843 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-21 17:15:17,631 INFO L231 Difference]: Finished difference. Result has 293 places, 284 transitions, 705 flow [2022-11-21 17:15:17,632 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=310, PETRI_DIFFERENCE_MINUEND_FLOW=646, PETRI_DIFFERENCE_MINUEND_PLACES=287, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=279, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=274, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=705, PETRI_PLACES=293, PETRI_TRANSITIONS=284} [2022-11-21 17:15:17,633 INFO L288 CegarLoopForPetriNet]: 277 programPoint places, 16 predicate places. [2022-11-21 17:15:17,633 INFO L495 AbstractCegarLoop]: Abstraction has has 293 places, 284 transitions, 705 flow [2022-11-21 17:15:17,634 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 278.0) internal successors, (1112), 4 states have internal predecessors, (1112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:15:17,635 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 17:15:17,635 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 17:15:17,635 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-11-21 17:15:17,635 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-21 17:15:17,636 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:15:17,636 INFO L85 PathProgramCache]: Analyzing trace with hash 1557428526, now seen corresponding path program 2 times [2022-11-21 17:15:17,636 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 17:15:17,636 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [585697461] [2022-11-21 17:15:17,636 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:15:17,637 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 17:15:17,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:15:17,810 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 17:15:17,811 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 17:15:17,811 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [585697461] [2022-11-21 17:15:17,811 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [585697461] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 17:15:17,811 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 17:15:17,811 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-21 17:15:17,812 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1691433764] [2022-11-21 17:15:17,812 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 17:15:17,812 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-21 17:15:17,813 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 17:15:17,813 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-21 17:15:17,813 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-21 17:15:17,816 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 274 out of 310 [2022-11-21 17:15:17,817 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 293 places, 284 transitions, 705 flow. Second operand has 4 states, 4 states have (on average 278.0) internal successors, (1112), 4 states have internal predecessors, (1112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:15:17,817 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 17:15:17,818 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 274 of 310 [2022-11-21 17:15:17,818 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 17:15:18,426 INFO L130 PetriNetUnfolder]: 393/3632 cut-off events. [2022-11-21 17:15:18,426 INFO L131 PetriNetUnfolder]: For 1595/1609 co-relation queries the response was YES. [2022-11-21 17:15:18,439 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5196 conditions, 3632 events. 393/3632 cut-off events. For 1595/1609 co-relation queries the response was YES. Maximal size of possible extension queue 119. Compared 35659 event pairs, 112 based on Foata normal form. 2/3405 useless extension candidates. Maximal degree in co-relation 5178. Up to 297 conditions per place. [2022-11-21 17:15:18,448 INFO L137 encePairwiseOnDemand]: 307/310 looper letters, 43 selfloop transitions, 2 changer transitions 4/303 dead transitions. [2022-11-21 17:15:18,448 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 296 places, 303 transitions, 917 flow [2022-11-21 17:15:18,448 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-21 17:15:18,448 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-11-21 17:15:18,450 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1133 transitions. [2022-11-21 17:15:18,451 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9137096774193548 [2022-11-21 17:15:18,451 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1133 transitions. [2022-11-21 17:15:18,451 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1133 transitions. [2022-11-21 17:15:18,452 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 17:15:18,452 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1133 transitions. [2022-11-21 17:15:18,454 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 283.25) internal successors, (1133), 4 states have internal predecessors, (1133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:15:18,457 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 310.0) internal successors, (1550), 5 states have internal predecessors, (1550), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:15:18,457 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 310.0) internal successors, (1550), 5 states have internal predecessors, (1550), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:15:18,457 INFO L175 Difference]: Start difference. First operand has 293 places, 284 transitions, 705 flow. Second operand 4 states and 1133 transitions. [2022-11-21 17:15:18,458 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 296 places, 303 transitions, 917 flow [2022-11-21 17:15:18,462 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 296 places, 303 transitions, 917 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-21 17:15:18,466 INFO L231 Difference]: Finished difference. Result has 298 places, 285 transitions, 726 flow [2022-11-21 17:15:18,467 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=310, PETRI_DIFFERENCE_MINUEND_FLOW=705, PETRI_DIFFERENCE_MINUEND_PLACES=293, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=284, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=282, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=726, PETRI_PLACES=298, PETRI_TRANSITIONS=285} [2022-11-21 17:15:18,468 INFO L288 CegarLoopForPetriNet]: 277 programPoint places, 21 predicate places. [2022-11-21 17:15:18,468 INFO L495 AbstractCegarLoop]: Abstraction has has 298 places, 285 transitions, 726 flow [2022-11-21 17:15:18,468 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 278.0) internal successors, (1112), 4 states have internal predecessors, (1112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:15:18,468 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 17:15:18,469 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 17:15:18,469 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-11-21 17:15:18,469 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-21 17:15:18,469 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:15:18,470 INFO L85 PathProgramCache]: Analyzing trace with hash -2132751040, now seen corresponding path program 1 times [2022-11-21 17:15:18,470 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 17:15:18,470 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [85618420] [2022-11-21 17:15:18,470 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:15:18,470 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 17:15:18,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:15:18,651 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 17:15:18,652 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 17:15:18,652 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [85618420] [2022-11-21 17:15:18,652 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [85618420] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 17:15:18,652 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 17:15:18,652 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-21 17:15:18,653 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1413266776] [2022-11-21 17:15:18,653 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 17:15:18,653 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-21 17:15:18,653 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 17:15:18,654 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-21 17:15:18,654 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-21 17:15:18,656 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 274 out of 310 [2022-11-21 17:15:18,657 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 298 places, 285 transitions, 726 flow. Second operand has 5 states, 5 states have (on average 277.2) internal successors, (1386), 5 states have internal predecessors, (1386), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:15:18,657 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 17:15:18,657 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 274 of 310 [2022-11-21 17:15:18,657 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 17:15:19,534 INFO L130 PetriNetUnfolder]: 416/3935 cut-off events. [2022-11-21 17:15:19,534 INFO L131 PetriNetUnfolder]: For 2645/2713 co-relation queries the response was YES. [2022-11-21 17:15:19,550 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5882 conditions, 3935 events. 416/3935 cut-off events. For 2645/2713 co-relation queries the response was YES. Maximal size of possible extension queue 136. Compared 39832 event pairs, 125 based on Foata normal form. 33/3706 useless extension candidates. Maximal degree in co-relation 5861. Up to 200 conditions per place. [2022-11-21 17:15:19,559 INFO L137 encePairwiseOnDemand]: 304/310 looper letters, 50 selfloop transitions, 13 changer transitions 9/326 dead transitions. [2022-11-21 17:15:19,560 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 303 places, 326 transitions, 1121 flow [2022-11-21 17:15:19,560 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-21 17:15:19,561 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-11-21 17:15:19,564 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1708 transitions. [2022-11-21 17:15:19,565 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9182795698924732 [2022-11-21 17:15:19,565 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1708 transitions. [2022-11-21 17:15:19,566 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1708 transitions. [2022-11-21 17:15:19,567 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 17:15:19,567 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1708 transitions. [2022-11-21 17:15:19,572 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 284.6666666666667) internal successors, (1708), 6 states have internal predecessors, (1708), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:15:19,576 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 310.0) internal successors, (2170), 7 states have internal predecessors, (2170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:15:19,577 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 310.0) internal successors, (2170), 7 states have internal predecessors, (2170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:15:19,577 INFO L175 Difference]: Start difference. First operand has 298 places, 285 transitions, 726 flow. Second operand 6 states and 1708 transitions. [2022-11-21 17:15:19,577 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 303 places, 326 transitions, 1121 flow [2022-11-21 17:15:19,584 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 301 places, 326 transitions, 1104 flow, removed 6 selfloop flow, removed 2 redundant places. [2022-11-21 17:15:19,590 INFO L231 Difference]: Finished difference. Result has 305 places, 295 transitions, 870 flow [2022-11-21 17:15:19,590 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=310, PETRI_DIFFERENCE_MINUEND_FLOW=720, PETRI_DIFFERENCE_MINUEND_PLACES=296, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=285, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=276, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=870, PETRI_PLACES=305, PETRI_TRANSITIONS=295} [2022-11-21 17:15:19,591 INFO L288 CegarLoopForPetriNet]: 277 programPoint places, 28 predicate places. [2022-11-21 17:15:19,591 INFO L495 AbstractCegarLoop]: Abstraction has has 305 places, 295 transitions, 870 flow [2022-11-21 17:15:19,592 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 277.2) internal successors, (1386), 5 states have internal predecessors, (1386), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:15:19,592 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 17:15:19,593 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 17:15:19,593 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-11-21 17:15:19,593 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-21 17:15:19,593 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:15:19,594 INFO L85 PathProgramCache]: Analyzing trace with hash 1788809088, now seen corresponding path program 2 times [2022-11-21 17:15:19,594 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 17:15:19,594 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [594899552] [2022-11-21 17:15:19,594 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:15:19,595 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 17:15:19,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:15:19,806 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 17:15:19,807 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 17:15:19,807 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [594899552] [2022-11-21 17:15:19,807 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [594899552] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 17:15:19,808 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 17:15:19,808 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-21 17:15:19,808 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [143401065] [2022-11-21 17:15:19,808 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 17:15:19,809 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-21 17:15:19,809 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 17:15:19,810 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-21 17:15:19,810 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-21 17:15:19,812 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 274 out of 310 [2022-11-21 17:15:19,814 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 305 places, 295 transitions, 870 flow. Second operand has 5 states, 5 states have (on average 277.2) internal successors, (1386), 5 states have internal predecessors, (1386), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:15:19,814 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 17:15:19,814 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 274 of 310 [2022-11-21 17:15:19,815 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 17:15:20,515 INFO L130 PetriNetUnfolder]: 375/3608 cut-off events. [2022-11-21 17:15:20,515 INFO L131 PetriNetUnfolder]: For 3137/3205 co-relation queries the response was YES. [2022-11-21 17:15:20,532 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5834 conditions, 3608 events. 375/3608 cut-off events. For 3137/3205 co-relation queries the response was YES. Maximal size of possible extension queue 124. Compared 36049 event pairs, 117 based on Foata normal form. 23/3372 useless extension candidates. Maximal degree in co-relation 5811. Up to 195 conditions per place. [2022-11-21 17:15:20,541 INFO L137 encePairwiseOnDemand]: 306/310 looper letters, 48 selfloop transitions, 10 changer transitions 17/329 dead transitions. [2022-11-21 17:15:20,541 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 310 places, 329 transitions, 1253 flow [2022-11-21 17:15:20,542 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-21 17:15:20,542 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-11-21 17:15:20,545 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1698 transitions. [2022-11-21 17:15:20,546 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9129032258064517 [2022-11-21 17:15:20,546 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1698 transitions. [2022-11-21 17:15:20,547 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1698 transitions. [2022-11-21 17:15:20,548 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 17:15:20,548 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1698 transitions. [2022-11-21 17:15:20,552 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 283.0) internal successors, (1698), 6 states have internal predecessors, (1698), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:15:20,555 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 310.0) internal successors, (2170), 7 states have internal predecessors, (2170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:15:20,556 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 310.0) internal successors, (2170), 7 states have internal predecessors, (2170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:15:20,556 INFO L175 Difference]: Start difference. First operand has 305 places, 295 transitions, 870 flow. Second operand 6 states and 1698 transitions. [2022-11-21 17:15:20,556 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 310 places, 329 transitions, 1253 flow [2022-11-21 17:15:20,566 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 309 places, 329 transitions, 1234 flow, removed 9 selfloop flow, removed 1 redundant places. [2022-11-21 17:15:20,570 INFO L231 Difference]: Finished difference. Result has 311 places, 294 transitions, 875 flow [2022-11-21 17:15:20,572 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=310, PETRI_DIFFERENCE_MINUEND_FLOW=859, PETRI_DIFFERENCE_MINUEND_PLACES=304, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=295, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=286, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=875, PETRI_PLACES=311, PETRI_TRANSITIONS=294} [2022-11-21 17:15:20,573 INFO L288 CegarLoopForPetriNet]: 277 programPoint places, 34 predicate places. [2022-11-21 17:15:20,573 INFO L495 AbstractCegarLoop]: Abstraction has has 311 places, 294 transitions, 875 flow [2022-11-21 17:15:20,574 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 277.2) internal successors, (1386), 5 states have internal predecessors, (1386), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:15:20,574 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 17:15:20,574 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 17:15:20,574 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-11-21 17:15:20,575 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-21 17:15:20,575 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:15:20,575 INFO L85 PathProgramCache]: Analyzing trace with hash 67183734, now seen corresponding path program 3 times [2022-11-21 17:15:20,575 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 17:15:20,576 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [977868711] [2022-11-21 17:15:20,576 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:15:20,576 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 17:15:20,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:15:20,741 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 17:15:20,741 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 17:15:20,741 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [977868711] [2022-11-21 17:15:20,744 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [977868711] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 17:15:20,744 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 17:15:20,744 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-21 17:15:20,744 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1683133682] [2022-11-21 17:15:20,745 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 17:15:20,746 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-21 17:15:20,746 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 17:15:20,746 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-21 17:15:20,747 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-21 17:15:20,748 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 274 out of 310 [2022-11-21 17:15:20,749 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 311 places, 294 transitions, 875 flow. Second operand has 4 states, 4 states have (on average 278.0) internal successors, (1112), 4 states have internal predecessors, (1112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:15:20,750 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 17:15:20,750 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 274 of 310 [2022-11-21 17:15:20,750 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 17:15:21,150 INFO L130 PetriNetUnfolder]: 256/2541 cut-off events. [2022-11-21 17:15:21,151 INFO L131 PetriNetUnfolder]: For 2406/2443 co-relation queries the response was YES. [2022-11-21 17:15:21,163 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4205 conditions, 2541 events. 256/2541 cut-off events. For 2406/2443 co-relation queries the response was YES. Maximal size of possible extension queue 100. Compared 23281 event pairs, 125 based on Foata normal form. 4/2358 useless extension candidates. Maximal degree in co-relation 4180. Up to 301 conditions per place. [2022-11-21 17:15:21,170 INFO L137 encePairwiseOnDemand]: 306/310 looper letters, 46 selfloop transitions, 9 changer transitions 1/310 dead transitions. [2022-11-21 17:15:21,170 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 313 places, 310 transitions, 1072 flow [2022-11-21 17:15:21,171 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-21 17:15:21,171 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-11-21 17:15:21,173 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1138 transitions. [2022-11-21 17:15:21,174 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.917741935483871 [2022-11-21 17:15:21,174 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1138 transitions. [2022-11-21 17:15:21,174 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1138 transitions. [2022-11-21 17:15:21,175 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 17:15:21,175 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1138 transitions. [2022-11-21 17:15:21,178 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 284.5) internal successors, (1138), 4 states have internal predecessors, (1138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:15:21,180 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 310.0) internal successors, (1550), 5 states have internal predecessors, (1550), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:15:21,181 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 310.0) internal successors, (1550), 5 states have internal predecessors, (1550), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:15:21,181 INFO L175 Difference]: Start difference. First operand has 311 places, 294 transitions, 875 flow. Second operand 4 states and 1138 transitions. [2022-11-21 17:15:21,181 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 313 places, 310 transitions, 1072 flow [2022-11-21 17:15:21,191 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 311 places, 310 transitions, 1056 flow, removed 3 selfloop flow, removed 2 redundant places. [2022-11-21 17:15:21,195 INFO L231 Difference]: Finished difference. Result has 313 places, 296 transitions, 915 flow [2022-11-21 17:15:21,195 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=310, PETRI_DIFFERENCE_MINUEND_FLOW=862, PETRI_DIFFERENCE_MINUEND_PLACES=308, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=294, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=285, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=915, PETRI_PLACES=313, PETRI_TRANSITIONS=296} [2022-11-21 17:15:21,196 INFO L288 CegarLoopForPetriNet]: 277 programPoint places, 36 predicate places. [2022-11-21 17:15:21,196 INFO L495 AbstractCegarLoop]: Abstraction has has 313 places, 296 transitions, 915 flow [2022-11-21 17:15:21,197 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 278.0) internal successors, (1112), 4 states have internal predecessors, (1112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:15:21,197 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 17:15:21,197 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 17:15:21,197 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-11-21 17:15:21,198 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-21 17:15:21,198 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:15:21,198 INFO L85 PathProgramCache]: Analyzing trace with hash 1964554166, now seen corresponding path program 3 times [2022-11-21 17:15:21,198 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 17:15:21,199 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [594852105] [2022-11-21 17:15:21,199 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:15:21,199 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 17:15:21,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:15:21,389 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 17:15:21,389 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 17:15:21,389 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [594852105] [2022-11-21 17:15:21,390 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [594852105] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 17:15:21,390 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 17:15:21,390 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-21 17:15:21,390 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1183688820] [2022-11-21 17:15:21,390 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 17:15:21,391 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-21 17:15:21,391 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 17:15:21,391 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-21 17:15:21,392 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-21 17:15:21,393 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 274 out of 310 [2022-11-21 17:15:21,395 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 313 places, 296 transitions, 915 flow. Second operand has 5 states, 5 states have (on average 277.2) internal successors, (1386), 5 states have internal predecessors, (1386), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:15:21,395 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 17:15:21,395 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 274 of 310 [2022-11-21 17:15:21,395 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 17:15:21,887 INFO L130 PetriNetUnfolder]: 286/3039 cut-off events. [2022-11-21 17:15:21,887 INFO L131 PetriNetUnfolder]: For 2537/2618 co-relation queries the response was YES. [2022-11-21 17:15:21,898 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4664 conditions, 3039 events. 286/3039 cut-off events. For 2537/2618 co-relation queries the response was YES. Maximal size of possible extension queue 99. Compared 28683 event pairs, 55 based on Foata normal form. 11/2845 useless extension candidates. Maximal degree in co-relation 4637. Up to 171 conditions per place. [2022-11-21 17:15:21,904 INFO L137 encePairwiseOnDemand]: 304/310 looper letters, 49 selfloop transitions, 15 changer transitions 7/325 dead transitions. [2022-11-21 17:15:21,904 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 317 places, 325 transitions, 1195 flow [2022-11-21 17:15:21,905 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-21 17:15:21,905 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-11-21 17:15:21,908 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1702 transitions. [2022-11-21 17:15:21,909 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9150537634408602 [2022-11-21 17:15:21,909 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1702 transitions. [2022-11-21 17:15:21,909 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1702 transitions. [2022-11-21 17:15:21,910 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 17:15:21,910 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1702 transitions. [2022-11-21 17:15:21,914 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 283.6666666666667) internal successors, (1702), 6 states have internal predecessors, (1702), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:15:21,917 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 310.0) internal successors, (2170), 7 states have internal predecessors, (2170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:15:21,918 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 310.0) internal successors, (2170), 7 states have internal predecessors, (2170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:15:21,918 INFO L175 Difference]: Start difference. First operand has 313 places, 296 transitions, 915 flow. Second operand 6 states and 1702 transitions. [2022-11-21 17:15:21,918 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 317 places, 325 transitions, 1195 flow [2022-11-21 17:15:21,928 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 316 places, 325 transitions, 1189 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-21 17:15:21,932 INFO L231 Difference]: Finished difference. Result has 318 places, 301 transitions, 999 flow [2022-11-21 17:15:21,933 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=310, PETRI_DIFFERENCE_MINUEND_FLOW=895, PETRI_DIFFERENCE_MINUEND_PLACES=311, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=295, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=282, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=999, PETRI_PLACES=318, PETRI_TRANSITIONS=301} [2022-11-21 17:15:21,933 INFO L288 CegarLoopForPetriNet]: 277 programPoint places, 41 predicate places. [2022-11-21 17:15:21,934 INFO L495 AbstractCegarLoop]: Abstraction has has 318 places, 301 transitions, 999 flow [2022-11-21 17:15:21,934 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 277.2) internal successors, (1386), 5 states have internal predecessors, (1386), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:15:21,934 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 17:15:21,935 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 17:15:21,935 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-11-21 17:15:21,935 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-21 17:15:21,936 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:15:21,936 INFO L85 PathProgramCache]: Analyzing trace with hash -2049063380, now seen corresponding path program 4 times [2022-11-21 17:15:21,936 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 17:15:21,936 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1567833903] [2022-11-21 17:15:21,936 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:15:21,937 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 17:15:21,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:15:22,092 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 17:15:22,092 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 17:15:22,092 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1567833903] [2022-11-21 17:15:22,092 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1567833903] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 17:15:22,092 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 17:15:22,093 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-21 17:15:22,093 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [828267761] [2022-11-21 17:15:22,093 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 17:15:22,093 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-21 17:15:22,094 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 17:15:22,094 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-21 17:15:22,094 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-21 17:15:22,096 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 274 out of 310 [2022-11-21 17:15:22,097 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 318 places, 301 transitions, 999 flow. Second operand has 4 states, 4 states have (on average 278.0) internal successors, (1112), 4 states have internal predecessors, (1112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:15:22,097 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 17:15:22,097 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 274 of 310 [2022-11-21 17:15:22,097 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 17:15:22,663 INFO L130 PetriNetUnfolder]: 268/2905 cut-off events. [2022-11-21 17:15:22,663 INFO L131 PetriNetUnfolder]: For 2767/2834 co-relation queries the response was YES. [2022-11-21 17:15:22,678 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4524 conditions, 2905 events. 268/2905 cut-off events. For 2767/2834 co-relation queries the response was YES. Maximal size of possible extension queue 96. Compared 26958 event pairs, 74 based on Foata normal form. 10/2718 useless extension candidates. Maximal degree in co-relation 4495. Up to 245 conditions per place. [2022-11-21 17:15:22,683 INFO L137 encePairwiseOnDemand]: 306/310 looper letters, 50 selfloop transitions, 10 changer transitions 4/318 dead transitions. [2022-11-21 17:15:22,684 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 321 places, 318 transitions, 1237 flow [2022-11-21 17:15:22,684 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-21 17:15:22,684 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-11-21 17:15:22,686 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1139 transitions. [2022-11-21 17:15:22,687 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9185483870967742 [2022-11-21 17:15:22,687 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1139 transitions. [2022-11-21 17:15:22,687 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1139 transitions. [2022-11-21 17:15:22,688 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 17:15:22,688 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1139 transitions. [2022-11-21 17:15:22,690 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 284.75) internal successors, (1139), 4 states have internal predecessors, (1139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:15:22,693 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 310.0) internal successors, (1550), 5 states have internal predecessors, (1550), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:15:22,693 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 310.0) internal successors, (1550), 5 states have internal predecessors, (1550), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:15:22,694 INFO L175 Difference]: Start difference. First operand has 318 places, 301 transitions, 999 flow. Second operand 4 states and 1139 transitions. [2022-11-21 17:15:22,694 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 321 places, 318 transitions, 1237 flow [2022-11-21 17:15:22,704 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 320 places, 318 transitions, 1216 flow, removed 7 selfloop flow, removed 1 redundant places. [2022-11-21 17:15:22,708 INFO L231 Difference]: Finished difference. Result has 322 places, 303 transitions, 1036 flow [2022-11-21 17:15:22,708 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=310, PETRI_DIFFERENCE_MINUEND_FLOW=979, PETRI_DIFFERENCE_MINUEND_PLACES=317, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=301, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=292, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=1036, PETRI_PLACES=322, PETRI_TRANSITIONS=303} [2022-11-21 17:15:22,709 INFO L288 CegarLoopForPetriNet]: 277 programPoint places, 45 predicate places. [2022-11-21 17:15:22,709 INFO L495 AbstractCegarLoop]: Abstraction has has 322 places, 303 transitions, 1036 flow [2022-11-21 17:15:22,710 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 278.0) internal successors, (1112), 4 states have internal predecessors, (1112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:15:22,710 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 17:15:22,710 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 17:15:22,710 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-11-21 17:15:22,711 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-21 17:15:22,711 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:15:22,711 INFO L85 PathProgramCache]: Analyzing trace with hash -1955938428, now seen corresponding path program 5 times [2022-11-21 17:15:22,711 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 17:15:22,712 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1895480506] [2022-11-21 17:15:22,712 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:15:22,712 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 17:15:22,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:15:22,881 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 17:15:22,882 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 17:15:22,882 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1895480506] [2022-11-21 17:15:22,882 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1895480506] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 17:15:22,882 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 17:15:22,883 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-21 17:15:22,883 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1695681738] [2022-11-21 17:15:22,883 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 17:15:22,883 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-21 17:15:22,884 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 17:15:22,884 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-21 17:15:22,884 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-21 17:15:22,886 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 274 out of 310 [2022-11-21 17:15:22,887 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 322 places, 303 transitions, 1036 flow. Second operand has 5 states, 5 states have (on average 277.2) internal successors, (1386), 5 states have internal predecessors, (1386), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:15:22,887 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 17:15:22,887 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 274 of 310 [2022-11-21 17:15:22,888 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 17:15:23,421 INFO L130 PetriNetUnfolder]: 231/2339 cut-off events. [2022-11-21 17:15:23,421 INFO L131 PetriNetUnfolder]: For 2681/2697 co-relation queries the response was YES. [2022-11-21 17:15:23,431 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3841 conditions, 2339 events. 231/2339 cut-off events. For 2681/2697 co-relation queries the response was YES. Maximal size of possible extension queue 88. Compared 20223 event pairs, 66 based on Foata normal form. 12/2184 useless extension candidates. Maximal degree in co-relation 3811. Up to 130 conditions per place. [2022-11-21 17:15:23,435 INFO L137 encePairwiseOnDemand]: 304/310 looper letters, 47 selfloop transitions, 13 changer transitions 20/334 dead transitions. [2022-11-21 17:15:23,436 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 326 places, 334 transitions, 1375 flow [2022-11-21 17:15:23,436 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-21 17:15:23,436 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-11-21 17:15:23,439 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1704 transitions. [2022-11-21 17:15:23,440 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9161290322580645 [2022-11-21 17:15:23,440 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1704 transitions. [2022-11-21 17:15:23,440 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1704 transitions. [2022-11-21 17:15:23,441 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 17:15:23,441 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1704 transitions. [2022-11-21 17:15:23,445 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 284.0) internal successors, (1704), 6 states have internal predecessors, (1704), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:15:23,448 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 310.0) internal successors, (2170), 7 states have internal predecessors, (2170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:15:23,449 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 310.0) internal successors, (2170), 7 states have internal predecessors, (2170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:15:23,449 INFO L175 Difference]: Start difference. First operand has 322 places, 303 transitions, 1036 flow. Second operand 6 states and 1704 transitions. [2022-11-21 17:15:23,449 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 326 places, 334 transitions, 1375 flow [2022-11-21 17:15:23,460 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 326 places, 334 transitions, 1373 flow, removed 1 selfloop flow, removed 0 redundant places. [2022-11-21 17:15:23,464 INFO L231 Difference]: Finished difference. Result has 330 places, 303 transitions, 1076 flow [2022-11-21 17:15:23,464 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=310, PETRI_DIFFERENCE_MINUEND_FLOW=989, PETRI_DIFFERENCE_MINUEND_PLACES=321, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=301, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=288, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1076, PETRI_PLACES=330, PETRI_TRANSITIONS=303} [2022-11-21 17:15:23,465 INFO L288 CegarLoopForPetriNet]: 277 programPoint places, 53 predicate places. [2022-11-21 17:15:23,465 INFO L495 AbstractCegarLoop]: Abstraction has has 330 places, 303 transitions, 1076 flow [2022-11-21 17:15:23,466 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 277.2) internal successors, (1386), 5 states have internal predecessors, (1386), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:15:23,466 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 17:15:23,466 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 17:15:23,466 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-11-21 17:15:23,466 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-21 17:15:23,467 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:15:23,467 INFO L85 PathProgramCache]: Analyzing trace with hash -464220918, now seen corresponding path program 4 times [2022-11-21 17:15:23,467 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 17:15:23,467 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [342395421] [2022-11-21 17:15:23,468 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:15:23,468 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 17:15:23,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:15:23,594 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 17:15:23,594 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 17:15:23,594 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [342395421] [2022-11-21 17:15:23,595 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [342395421] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 17:15:23,595 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 17:15:23,595 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-21 17:15:23,595 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1780613086] [2022-11-21 17:15:23,595 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 17:15:23,596 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-21 17:15:23,596 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 17:15:23,596 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-21 17:15:23,597 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-21 17:15:23,598 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 274 out of 310 [2022-11-21 17:15:23,599 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 330 places, 303 transitions, 1076 flow. Second operand has 4 states, 4 states have (on average 278.0) internal successors, (1112), 4 states have internal predecessors, (1112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:15:23,599 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 17:15:23,599 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 274 of 310 [2022-11-21 17:15:23,599 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 17:15:23,965 INFO L130 PetriNetUnfolder]: 166/1708 cut-off events. [2022-11-21 17:15:23,965 INFO L131 PetriNetUnfolder]: For 2302/2363 co-relation queries the response was YES. [2022-11-21 17:15:23,975 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2882 conditions, 1708 events. 166/1708 cut-off events. For 2302/2363 co-relation queries the response was YES. Maximal size of possible extension queue 57. Compared 12778 event pairs, 58 based on Foata normal form. 4/1589 useless extension candidates. Maximal degree in co-relation 2848. Up to 128 conditions per place. [2022-11-21 17:15:23,979 INFO L137 encePairwiseOnDemand]: 306/310 looper letters, 44 selfloop transitions, 10 changer transitions 9/317 dead transitions. [2022-11-21 17:15:23,979 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 331 places, 317 transitions, 1236 flow [2022-11-21 17:15:23,980 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-21 17:15:23,980 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-21 17:15:23,982 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1413 transitions. [2022-11-21 17:15:23,983 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9116129032258065 [2022-11-21 17:15:23,983 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1413 transitions. [2022-11-21 17:15:23,984 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1413 transitions. [2022-11-21 17:15:23,985 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 17:15:23,985 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1413 transitions. [2022-11-21 17:15:23,988 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 282.6) internal successors, (1413), 5 states have internal predecessors, (1413), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:15:23,991 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 310.0) internal successors, (1860), 6 states have internal predecessors, (1860), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:15:23,992 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 310.0) internal successors, (1860), 6 states have internal predecessors, (1860), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:15:23,992 INFO L175 Difference]: Start difference. First operand has 330 places, 303 transitions, 1076 flow. Second operand 5 states and 1413 transitions. [2022-11-21 17:15:23,992 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 331 places, 317 transitions, 1236 flow [2022-11-21 17:15:24,003 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 329 places, 317 transitions, 1227 flow, removed 1 selfloop flow, removed 2 redundant places. [2022-11-21 17:15:24,007 INFO L231 Difference]: Finished difference. Result has 329 places, 299 transitions, 1016 flow [2022-11-21 17:15:24,008 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=310, PETRI_DIFFERENCE_MINUEND_FLOW=1022, PETRI_DIFFERENCE_MINUEND_PLACES=325, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=301, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=292, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1016, PETRI_PLACES=329, PETRI_TRANSITIONS=299} [2022-11-21 17:15:24,008 INFO L288 CegarLoopForPetriNet]: 277 programPoint places, 52 predicate places. [2022-11-21 17:15:24,008 INFO L495 AbstractCegarLoop]: Abstraction has has 329 places, 299 transitions, 1016 flow [2022-11-21 17:15:24,009 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 278.0) internal successors, (1112), 4 states have internal predecessors, (1112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:15:24,009 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 17:15:24,009 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 17:15:24,009 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-11-21 17:15:24,010 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-21 17:15:24,010 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:15:24,010 INFO L85 PathProgramCache]: Analyzing trace with hash 1096739630, now seen corresponding path program 5 times [2022-11-21 17:15:24,010 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 17:15:24,011 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1474400511] [2022-11-21 17:15:24,011 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:15:24,011 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 17:15:24,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:15:24,153 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 17:15:24,153 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 17:15:24,153 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1474400511] [2022-11-21 17:15:24,154 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1474400511] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 17:15:24,154 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 17:15:24,154 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-21 17:15:24,154 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1027846312] [2022-11-21 17:15:24,154 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 17:15:24,155 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-21 17:15:24,155 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 17:15:24,155 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-21 17:15:24,155 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-21 17:15:24,157 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 274 out of 310 [2022-11-21 17:15:24,158 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 329 places, 299 transitions, 1016 flow. Second operand has 4 states, 4 states have (on average 278.0) internal successors, (1112), 4 states have internal predecessors, (1112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:15:24,158 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 17:15:24,158 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 274 of 310 [2022-11-21 17:15:24,158 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 17:15:24,452 INFO L130 PetriNetUnfolder]: 135/1306 cut-off events. [2022-11-21 17:15:24,453 INFO L131 PetriNetUnfolder]: For 2077/2085 co-relation queries the response was YES. [2022-11-21 17:15:24,460 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2349 conditions, 1306 events. 135/1306 cut-off events. For 2077/2085 co-relation queries the response was YES. Maximal size of possible extension queue 50. Compared 8595 event pairs, 55 based on Foata normal form. 6/1214 useless extension candidates. Maximal degree in co-relation 2316. Up to 128 conditions per place. [2022-11-21 17:15:24,464 INFO L137 encePairwiseOnDemand]: 306/310 looper letters, 42 selfloop transitions, 7 changer transitions 2/305 dead transitions. [2022-11-21 17:15:24,465 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 331 places, 305 transitions, 1119 flow [2022-11-21 17:15:24,465 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-21 17:15:24,465 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-11-21 17:15:24,467 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1135 transitions. [2022-11-21 17:15:24,467 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9153225806451613 [2022-11-21 17:15:24,468 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1135 transitions. [2022-11-21 17:15:24,468 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1135 transitions. [2022-11-21 17:15:24,468 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 17:15:24,469 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1135 transitions. [2022-11-21 17:15:24,471 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 283.75) internal successors, (1135), 4 states have internal predecessors, (1135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:15:24,473 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 310.0) internal successors, (1550), 5 states have internal predecessors, (1550), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:15:24,474 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 310.0) internal successors, (1550), 5 states have internal predecessors, (1550), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:15:24,474 INFO L175 Difference]: Start difference. First operand has 329 places, 299 transitions, 1016 flow. Second operand 4 states and 1135 transitions. [2022-11-21 17:15:24,474 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 331 places, 305 transitions, 1119 flow [2022-11-21 17:15:24,483 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 331 places, 305 transitions, 1115 flow, removed 2 selfloop flow, removed 0 redundant places. [2022-11-21 17:15:24,487 INFO L231 Difference]: Finished difference. Result has 331 places, 298 transitions, 1005 flow [2022-11-21 17:15:24,488 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=310, PETRI_DIFFERENCE_MINUEND_FLOW=991, PETRI_DIFFERENCE_MINUEND_PLACES=328, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=298, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=291, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=1005, PETRI_PLACES=331, PETRI_TRANSITIONS=298} [2022-11-21 17:15:24,488 INFO L288 CegarLoopForPetriNet]: 277 programPoint places, 54 predicate places. [2022-11-21 17:15:24,489 INFO L495 AbstractCegarLoop]: Abstraction has has 331 places, 298 transitions, 1005 flow [2022-11-21 17:15:24,489 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 278.0) internal successors, (1112), 4 states have internal predecessors, (1112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:15:24,489 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 17:15:24,490 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 17:15:24,490 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-11-21 17:15:24,490 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-21 17:15:24,490 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:15:24,491 INFO L85 PathProgramCache]: Analyzing trace with hash -1402720634, now seen corresponding path program 1 times [2022-11-21 17:15:24,491 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 17:15:24,491 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [355058883] [2022-11-21 17:15:24,491 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:15:24,491 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 17:15:24,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:15:26,381 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 17:15:26,381 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 17:15:26,381 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [355058883] [2022-11-21 17:15:26,382 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [355058883] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 17:15:26,382 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 17:15:26,382 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [28] imperfect sequences [] total 28 [2022-11-21 17:15:26,382 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [463059368] [2022-11-21 17:15:26,382 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 17:15:26,383 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2022-11-21 17:15:26,383 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 17:15:26,383 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2022-11-21 17:15:26,384 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=686, Unknown=0, NotChecked=0, Total=756 [2022-11-21 17:15:26,389 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 195 out of 310 [2022-11-21 17:15:26,396 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 331 places, 298 transitions, 1005 flow. Second operand has 28 states, 28 states have (on average 197.53571428571428) internal successors, (5531), 28 states have internal predecessors, (5531), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:15:26,396 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 17:15:26,396 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 195 of 310 [2022-11-21 17:15:26,396 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 17:15:35,984 INFO L130 PetriNetUnfolder]: 6934/28562 cut-off events. [2022-11-21 17:15:35,984 INFO L131 PetriNetUnfolder]: For 9606/9971 co-relation queries the response was YES. [2022-11-21 17:15:36,123 INFO L83 FinitePrefix]: Finished finitePrefix Result has 45298 conditions, 28562 events. 6934/28562 cut-off events. For 9606/9971 co-relation queries the response was YES. Maximal size of possible extension queue 1140. Compared 394566 event pairs, 4159 based on Foata normal form. 48/24679 useless extension candidates. Maximal degree in co-relation 45264. Up to 2219 conditions per place. [2022-11-21 17:15:36,199 INFO L137 encePairwiseOnDemand]: 271/310 looper letters, 276 selfloop transitions, 43 changer transitions 19/541 dead transitions. [2022-11-21 17:15:36,199 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 373 places, 541 transitions, 2406 flow [2022-11-21 17:15:36,199 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2022-11-21 17:15:36,199 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2022-11-21 17:15:36,208 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 8709 transitions. [2022-11-21 17:15:36,212 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6533383345836459 [2022-11-21 17:15:36,212 INFO L72 ComplementDD]: Start complementDD. Operand 43 states and 8709 transitions. [2022-11-21 17:15:36,212 INFO L73 IsDeterministic]: Start isDeterministic. Operand 43 states and 8709 transitions. [2022-11-21 17:15:36,216 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 17:15:36,216 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 43 states and 8709 transitions. [2022-11-21 17:15:36,230 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 44 states, 43 states have (on average 202.53488372093022) internal successors, (8709), 43 states have internal predecessors, (8709), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:15:36,250 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 44 states, 44 states have (on average 310.0) internal successors, (13640), 44 states have internal predecessors, (13640), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:15:36,256 INFO L81 ComplementDD]: Finished complementDD. Result has 44 states, 44 states have (on average 310.0) internal successors, (13640), 44 states have internal predecessors, (13640), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:15:36,256 INFO L175 Difference]: Start difference. First operand has 331 places, 298 transitions, 1005 flow. Second operand 43 states and 8709 transitions. [2022-11-21 17:15:36,256 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 373 places, 541 transitions, 2406 flow [2022-11-21 17:15:36,321 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 371 places, 541 transitions, 2388 flow, removed 5 selfloop flow, removed 2 redundant places. [2022-11-21 17:15:36,327 INFO L231 Difference]: Finished difference. Result has 390 places, 328 transitions, 1221 flow [2022-11-21 17:15:36,328 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=310, PETRI_DIFFERENCE_MINUEND_FLOW=987, PETRI_DIFFERENCE_MINUEND_PLACES=329, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=298, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=265, PETRI_DIFFERENCE_SUBTRAHEND_STATES=43, PETRI_FLOW=1221, PETRI_PLACES=390, PETRI_TRANSITIONS=328} [2022-11-21 17:15:36,329 INFO L288 CegarLoopForPetriNet]: 277 programPoint places, 113 predicate places. [2022-11-21 17:15:36,329 INFO L495 AbstractCegarLoop]: Abstraction has has 390 places, 328 transitions, 1221 flow [2022-11-21 17:15:36,331 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 197.53571428571428) internal successors, (5531), 28 states have internal predecessors, (5531), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:15:36,332 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 17:15:36,332 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 17:15:36,333 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-11-21 17:15:36,333 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-21 17:15:36,334 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:15:36,334 INFO L85 PathProgramCache]: Analyzing trace with hash 669134884, now seen corresponding path program 2 times [2022-11-21 17:15:36,334 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 17:15:36,334 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1307806093] [2022-11-21 17:15:36,335 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:15:36,335 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 17:15:36,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:15:38,231 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 17:15:38,231 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 17:15:38,231 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1307806093] [2022-11-21 17:15:38,231 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1307806093] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 17:15:38,231 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 17:15:38,231 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [24] imperfect sequences [] total 24 [2022-11-21 17:15:38,232 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1076959650] [2022-11-21 17:15:38,232 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 17:15:38,232 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-11-21 17:15:38,232 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 17:15:38,233 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-11-21 17:15:38,233 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=484, Unknown=0, NotChecked=0, Total=552 [2022-11-21 17:15:38,238 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 198 out of 310 [2022-11-21 17:15:38,243 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 390 places, 328 transitions, 1221 flow. Second operand has 24 states, 24 states have (on average 200.91666666666666) internal successors, (4822), 24 states have internal predecessors, (4822), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:15:38,243 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 17:15:38,243 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 198 of 310 [2022-11-21 17:15:38,243 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 17:15:45,949 INFO L130 PetriNetUnfolder]: 5555/24615 cut-off events. [2022-11-21 17:15:45,949 INFO L131 PetriNetUnfolder]: For 10736/11139 co-relation queries the response was YES. [2022-11-21 17:15:46,121 INFO L83 FinitePrefix]: Finished finitePrefix Result has 40770 conditions, 24615 events. 5555/24615 cut-off events. For 10736/11139 co-relation queries the response was YES. Maximal size of possible extension queue 986. Compared 338255 event pairs, 3339 based on Foata normal form. 50/21205 useless extension candidates. Maximal degree in co-relation 40717. Up to 1808 conditions per place. [2022-11-21 17:15:46,193 INFO L137 encePairwiseOnDemand]: 275/310 looper letters, 259 selfloop transitions, 42 changer transitions 16/523 dead transitions. [2022-11-21 17:15:46,194 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 421 places, 523 transitions, 2561 flow [2022-11-21 17:15:46,194 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2022-11-21 17:15:46,194 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2022-11-21 17:15:46,203 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 8026 transitions. [2022-11-21 17:15:46,207 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6638544251447477 [2022-11-21 17:15:46,207 INFO L72 ComplementDD]: Start complementDD. Operand 39 states and 8026 transitions. [2022-11-21 17:15:46,207 INFO L73 IsDeterministic]: Start isDeterministic. Operand 39 states and 8026 transitions. [2022-11-21 17:15:46,211 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 17:15:46,211 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 39 states and 8026 transitions. [2022-11-21 17:15:46,224 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 40 states, 39 states have (on average 205.7948717948718) internal successors, (8026), 39 states have internal predecessors, (8026), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:15:46,241 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 40 states, 40 states have (on average 310.0) internal successors, (12400), 40 states have internal predecessors, (12400), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:15:46,246 INFO L81 ComplementDD]: Finished complementDD. Result has 40 states, 40 states have (on average 310.0) internal successors, (12400), 40 states have internal predecessors, (12400), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:15:46,246 INFO L175 Difference]: Start difference. First operand has 390 places, 328 transitions, 1221 flow. Second operand 39 states and 8026 transitions. [2022-11-21 17:15:46,246 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 421 places, 523 transitions, 2561 flow [2022-11-21 17:15:46,331 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 408 places, 523 transitions, 2440 flow, removed 52 selfloop flow, removed 13 redundant places. [2022-11-21 17:15:46,337 INFO L231 Difference]: Finished difference. Result has 413 places, 330 transitions, 1299 flow [2022-11-21 17:15:46,338 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=310, PETRI_DIFFERENCE_MINUEND_FLOW=1190, PETRI_DIFFERENCE_MINUEND_PLACES=370, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=328, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=286, PETRI_DIFFERENCE_SUBTRAHEND_STATES=39, PETRI_FLOW=1299, PETRI_PLACES=413, PETRI_TRANSITIONS=330} [2022-11-21 17:15:46,338 INFO L288 CegarLoopForPetriNet]: 277 programPoint places, 136 predicate places. [2022-11-21 17:15:46,338 INFO L495 AbstractCegarLoop]: Abstraction has has 413 places, 330 transitions, 1299 flow [2022-11-21 17:15:46,340 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 200.91666666666666) internal successors, (4822), 24 states have internal predecessors, (4822), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:15:46,340 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 17:15:46,341 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 17:15:46,341 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2022-11-21 17:15:46,341 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-21 17:15:46,341 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:15:46,342 INFO L85 PathProgramCache]: Analyzing trace with hash 1193257254, now seen corresponding path program 3 times [2022-11-21 17:15:46,342 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 17:15:46,342 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [915959404] [2022-11-21 17:15:46,342 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:15:46,343 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 17:15:46,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:15:48,012 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 17:15:48,013 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 17:15:48,013 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [915959404] [2022-11-21 17:15:48,013 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [915959404] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 17:15:48,013 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 17:15:48,014 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [27] imperfect sequences [] total 27 [2022-11-21 17:15:48,014 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [789304828] [2022-11-21 17:15:48,014 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 17:15:48,014 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-11-21 17:15:48,015 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 17:15:48,015 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-11-21 17:15:48,015 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=620, Unknown=0, NotChecked=0, Total=702 [2022-11-21 17:15:48,020 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 198 out of 310 [2022-11-21 17:15:48,026 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 413 places, 330 transitions, 1299 flow. Second operand has 27 states, 27 states have (on average 200.59259259259258) internal successors, (5416), 27 states have internal predecessors, (5416), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:15:48,026 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 17:15:48,026 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 198 of 310 [2022-11-21 17:15:48,026 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 17:15:56,470 INFO L130 PetriNetUnfolder]: 5382/23439 cut-off events. [2022-11-21 17:15:56,471 INFO L131 PetriNetUnfolder]: For 13216/13631 co-relation queries the response was YES. [2022-11-21 17:15:56,642 INFO L83 FinitePrefix]: Finished finitePrefix Result has 41045 conditions, 23439 events. 5382/23439 cut-off events. For 13216/13631 co-relation queries the response was YES. Maximal size of possible extension queue 966. Compared 315966 event pairs, 1082 based on Foata normal form. 76/20654 useless extension candidates. Maximal degree in co-relation 40993. Up to 1415 conditions per place. [2022-11-21 17:15:56,897 INFO L137 encePairwiseOnDemand]: 268/310 looper letters, 297 selfloop transitions, 83 changer transitions 19/605 dead transitions. [2022-11-21 17:15:56,897 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 458 places, 605 transitions, 3090 flow [2022-11-21 17:15:56,897 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2022-11-21 17:15:56,897 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48 states. [2022-11-21 17:15:56,907 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 9884 transitions. [2022-11-21 17:15:56,912 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.664247311827957 [2022-11-21 17:15:56,912 INFO L72 ComplementDD]: Start complementDD. Operand 48 states and 9884 transitions. [2022-11-21 17:15:56,912 INFO L73 IsDeterministic]: Start isDeterministic. Operand 48 states and 9884 transitions. [2022-11-21 17:15:56,916 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 17:15:56,916 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 48 states and 9884 transitions. [2022-11-21 17:15:56,933 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 49 states, 48 states have (on average 205.91666666666666) internal successors, (9884), 48 states have internal predecessors, (9884), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:15:56,951 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 49 states, 49 states have (on average 310.0) internal successors, (15190), 49 states have internal predecessors, (15190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:15:56,955 INFO L81 ComplementDD]: Finished complementDD. Result has 49 states, 49 states have (on average 310.0) internal successors, (15190), 49 states have internal predecessors, (15190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:15:56,955 INFO L175 Difference]: Start difference. First operand has 413 places, 330 transitions, 1299 flow. Second operand 48 states and 9884 transitions. [2022-11-21 17:15:56,955 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 458 places, 605 transitions, 3090 flow [2022-11-21 17:15:57,032 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 422 places, 605 transitions, 2948 flow, removed 22 selfloop flow, removed 36 redundant places. [2022-11-21 17:15:57,039 INFO L231 Difference]: Finished difference. Result has 430 places, 369 transitions, 1701 flow [2022-11-21 17:15:57,040 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=310, PETRI_DIFFERENCE_MINUEND_FLOW=1211, PETRI_DIFFERENCE_MINUEND_PLACES=375, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=330, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=49, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=277, PETRI_DIFFERENCE_SUBTRAHEND_STATES=48, PETRI_FLOW=1701, PETRI_PLACES=430, PETRI_TRANSITIONS=369} [2022-11-21 17:15:57,040 INFO L288 CegarLoopForPetriNet]: 277 programPoint places, 153 predicate places. [2022-11-21 17:15:57,040 INFO L495 AbstractCegarLoop]: Abstraction has has 430 places, 369 transitions, 1701 flow [2022-11-21 17:15:57,042 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 200.59259259259258) internal successors, (5416), 27 states have internal predecessors, (5416), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:15:57,042 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 17:15:57,042 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 17:15:57,042 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2022-11-21 17:15:57,042 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-21 17:15:57,043 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:15:57,043 INFO L85 PathProgramCache]: Analyzing trace with hash 1601609964, now seen corresponding path program 1 times [2022-11-21 17:15:57,043 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 17:15:57,043 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [754881504] [2022-11-21 17:15:57,044 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:15:57,044 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 17:15:57,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:15:57,793 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 17:15:57,793 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 17:15:57,793 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [754881504] [2022-11-21 17:15:57,794 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [754881504] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-21 17:15:57,794 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1677888545] [2022-11-21 17:15:57,794 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:15:57,794 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 17:15:57,794 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_184c7e73-36eb-4bd1-8dca-36a8868ffa63/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 17:15:57,803 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_184c7e73-36eb-4bd1-8dca-36a8868ffa63/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-21 17:15:57,810 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_184c7e73-36eb-4bd1-8dca-36a8868ffa63/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-21 17:15:58,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:15:58,016 INFO L263 TraceCheckSpWp]: Trace formula consists of 446 conjuncts, 19 conjunts are in the unsatisfiable core [2022-11-21 17:15:58,062 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 17:15:59,277 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 17:15:59,278 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-21 17:16:01,012 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 17:16:01,012 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1677888545] provided 1 perfect and 1 imperfect interpolant sequences [2022-11-21 17:16:01,012 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-11-21 17:16:01,013 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [19, 18] total 36 [2022-11-21 17:16:01,013 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [922963514] [2022-11-21 17:16:01,013 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 17:16:01,014 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-11-21 17:16:01,014 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 17:16:01,015 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-11-21 17:16:01,016 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=174, Invalid=1086, Unknown=0, NotChecked=0, Total=1260 [2022-11-21 17:16:01,020 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 198 out of 310 [2022-11-21 17:16:01,025 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 430 places, 369 transitions, 1701 flow. Second operand has 18 states, 18 states have (on average 202.11111111111111) internal successors, (3638), 18 states have internal predecessors, (3638), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:16:01,025 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 17:16:01,026 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 198 of 310 [2022-11-21 17:16:01,026 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 17:16:07,781 INFO L130 PetriNetUnfolder]: 5665/26065 cut-off events. [2022-11-21 17:16:07,781 INFO L131 PetriNetUnfolder]: For 29971/30779 co-relation queries the response was YES. [2022-11-21 17:16:07,977 INFO L83 FinitePrefix]: Finished finitePrefix Result has 50591 conditions, 26065 events. 5665/26065 cut-off events. For 29971/30779 co-relation queries the response was YES. Maximal size of possible extension queue 1044. Compared 363719 event pairs, 3163 based on Foata normal form. 70/22679 useless extension candidates. Maximal degree in co-relation 50535. Up to 3517 conditions per place. [2022-11-21 17:16:08,047 INFO L137 encePairwiseOnDemand]: 282/310 looper letters, 251 selfloop transitions, 45 changer transitions 14/516 dead transitions. [2022-11-21 17:16:08,047 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 457 places, 516 transitions, 2906 flow [2022-11-21 17:16:08,048 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-11-21 17:16:08,048 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2022-11-21 17:16:08,056 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 6204 transitions. [2022-11-21 17:16:08,060 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6670967741935484 [2022-11-21 17:16:08,061 INFO L72 ComplementDD]: Start complementDD. Operand 30 states and 6204 transitions. [2022-11-21 17:16:08,061 INFO L73 IsDeterministic]: Start isDeterministic. Operand 30 states and 6204 transitions. [2022-11-21 17:16:08,064 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 17:16:08,065 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 30 states and 6204 transitions. [2022-11-21 17:16:08,079 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 31 states, 30 states have (on average 206.8) internal successors, (6204), 30 states have internal predecessors, (6204), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:16:08,092 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 31 states, 31 states have (on average 310.0) internal successors, (9610), 31 states have internal predecessors, (9610), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:16:08,095 INFO L81 ComplementDD]: Finished complementDD. Result has 31 states, 31 states have (on average 310.0) internal successors, (9610), 31 states have internal predecessors, (9610), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:16:08,096 INFO L175 Difference]: Start difference. First operand has 430 places, 369 transitions, 1701 flow. Second operand 30 states and 6204 transitions. [2022-11-21 17:16:08,096 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 457 places, 516 transitions, 2906 flow [2022-11-21 17:16:08,475 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 419 places, 516 transitions, 2729 flow, removed 40 selfloop flow, removed 38 redundant places. [2022-11-21 17:16:08,481 INFO L231 Difference]: Finished difference. Result has 423 places, 382 transitions, 1712 flow [2022-11-21 17:16:08,481 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=310, PETRI_DIFFERENCE_MINUEND_FLOW=1546, PETRI_DIFFERENCE_MINUEND_PLACES=390, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=369, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=332, PETRI_DIFFERENCE_SUBTRAHEND_STATES=30, PETRI_FLOW=1712, PETRI_PLACES=423, PETRI_TRANSITIONS=382} [2022-11-21 17:16:08,481 INFO L288 CegarLoopForPetriNet]: 277 programPoint places, 146 predicate places. [2022-11-21 17:16:08,482 INFO L495 AbstractCegarLoop]: Abstraction has has 423 places, 382 transitions, 1712 flow [2022-11-21 17:16:08,483 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 202.11111111111111) internal successors, (3638), 18 states have internal predecessors, (3638), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:16:08,483 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 17:16:08,483 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 17:16:08,491 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_184c7e73-36eb-4bd1-8dca-36a8868ffa63/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-21 17:16:08,683 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_184c7e73-36eb-4bd1-8dca-36a8868ffa63/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2022-11-21 17:16:08,684 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-21 17:16:08,685 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:16:08,685 INFO L85 PathProgramCache]: Analyzing trace with hash -506854110, now seen corresponding path program 2 times [2022-11-21 17:16:08,685 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 17:16:08,685 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [972635892] [2022-11-21 17:16:08,686 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:16:08,686 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 17:16:08,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:16:09,783 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 17:16:09,784 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 17:16:09,784 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [972635892] [2022-11-21 17:16:09,784 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [972635892] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-21 17:16:09,784 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1395154360] [2022-11-21 17:16:09,785 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-21 17:16:09,785 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 17:16:09,785 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_184c7e73-36eb-4bd1-8dca-36a8868ffa63/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 17:16:09,786 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_184c7e73-36eb-4bd1-8dca-36a8868ffa63/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-21 17:16:09,806 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_184c7e73-36eb-4bd1-8dca-36a8868ffa63/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-21 17:16:09,967 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-11-21 17:16:09,967 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-21 17:16:09,970 INFO L263 TraceCheckSpWp]: Trace formula consists of 433 conjuncts, 27 conjunts are in the unsatisfiable core [2022-11-21 17:16:09,988 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 17:16:11,195 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-21 17:16:11,195 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-21 17:16:11,196 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1395154360] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 17:16:11,196 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-21 17:16:11,196 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [19] total 34 [2022-11-21 17:16:11,196 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [699326505] [2022-11-21 17:16:11,197 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 17:16:11,197 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-11-21 17:16:11,197 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 17:16:11,198 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-11-21 17:16:11,198 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=1036, Unknown=0, NotChecked=0, Total=1122 [2022-11-21 17:16:11,202 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 195 out of 310 [2022-11-21 17:16:11,205 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 423 places, 382 transitions, 1712 flow. Second operand has 19 states, 19 states have (on average 198.94736842105263) internal successors, (3780), 19 states have internal predecessors, (3780), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:16:11,205 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 17:16:11,205 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 195 of 310 [2022-11-21 17:16:11,205 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 17:16:21,280 INFO L130 PetriNetUnfolder]: 8331/37410 cut-off events. [2022-11-21 17:16:21,280 INFO L131 PetriNetUnfolder]: For 41366/42447 co-relation queries the response was YES. [2022-11-21 17:16:21,564 INFO L83 FinitePrefix]: Finished finitePrefix Result has 72532 conditions, 37410 events. 8331/37410 cut-off events. For 41366/42447 co-relation queries the response was YES. Maximal size of possible extension queue 1469. Compared 547596 event pairs, 4447 based on Foata normal form. 107/32892 useless extension candidates. Maximal degree in co-relation 72474. Up to 6442 conditions per place. [2022-11-21 17:16:21,640 INFO L137 encePairwiseOnDemand]: 283/310 looper letters, 221 selfloop transitions, 54 changer transitions 13/491 dead transitions. [2022-11-21 17:16:21,640 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 448 places, 491 transitions, 2762 flow [2022-11-21 17:16:21,641 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2022-11-21 17:16:21,641 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2022-11-21 17:16:21,645 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 5650 transitions. [2022-11-21 17:16:21,648 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6509216589861752 [2022-11-21 17:16:21,649 INFO L72 ComplementDD]: Start complementDD. Operand 28 states and 5650 transitions. [2022-11-21 17:16:21,649 INFO L73 IsDeterministic]: Start isDeterministic. Operand 28 states and 5650 transitions. [2022-11-21 17:16:21,653 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 17:16:21,653 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 28 states and 5650 transitions. [2022-11-21 17:16:21,663 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 29 states, 28 states have (on average 201.78571428571428) internal successors, (5650), 28 states have internal predecessors, (5650), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:16:21,674 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 29 states, 29 states have (on average 310.0) internal successors, (8990), 29 states have internal predecessors, (8990), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:16:21,676 INFO L81 ComplementDD]: Finished complementDD. Result has 29 states, 29 states have (on average 310.0) internal successors, (8990), 29 states have internal predecessors, (8990), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:16:21,676 INFO L175 Difference]: Start difference. First operand has 423 places, 382 transitions, 1712 flow. Second operand 28 states and 5650 transitions. [2022-11-21 17:16:21,676 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 448 places, 491 transitions, 2762 flow [2022-11-21 17:16:22,025 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 434 places, 491 transitions, 2676 flow, removed 28 selfloop flow, removed 14 redundant places. [2022-11-21 17:16:22,029 INFO L231 Difference]: Finished difference. Result has 447 places, 410 transitions, 1983 flow [2022-11-21 17:16:22,030 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=310, PETRI_DIFFERENCE_MINUEND_FLOW=1652, PETRI_DIFFERENCE_MINUEND_PLACES=407, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=382, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=338, PETRI_DIFFERENCE_SUBTRAHEND_STATES=28, PETRI_FLOW=1983, PETRI_PLACES=447, PETRI_TRANSITIONS=410} [2022-11-21 17:16:22,031 INFO L288 CegarLoopForPetriNet]: 277 programPoint places, 170 predicate places. [2022-11-21 17:16:22,031 INFO L495 AbstractCegarLoop]: Abstraction has has 447 places, 410 transitions, 1983 flow [2022-11-21 17:16:22,032 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 198.94736842105263) internal successors, (3780), 19 states have internal predecessors, (3780), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:16:22,032 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 17:16:22,032 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 17:16:22,047 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_184c7e73-36eb-4bd1-8dca-36a8868ffa63/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-21 17:16:22,241 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_184c7e73-36eb-4bd1-8dca-36a8868ffa63/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2022-11-21 17:16:22,242 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-21 17:16:22,242 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:16:22,242 INFO L85 PathProgramCache]: Analyzing trace with hash -1105791019, now seen corresponding path program 1 times [2022-11-21 17:16:22,242 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 17:16:22,243 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [536760492] [2022-11-21 17:16:22,243 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:16:22,243 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 17:16:22,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:16:22,655 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 17:16:22,655 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 17:16:22,655 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [536760492] [2022-11-21 17:16:22,655 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [536760492] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-21 17:16:22,655 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1034167308] [2022-11-21 17:16:22,655 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:16:22,655 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 17:16:22,656 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_184c7e73-36eb-4bd1-8dca-36a8868ffa63/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 17:16:22,657 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_184c7e73-36eb-4bd1-8dca-36a8868ffa63/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-21 17:16:22,663 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_184c7e73-36eb-4bd1-8dca-36a8868ffa63/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-21 17:16:22,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:16:22,844 INFO L263 TraceCheckSpWp]: Trace formula consists of 446 conjuncts, 14 conjunts are in the unsatisfiable core [2022-11-21 17:16:22,848 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 17:16:23,376 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 17:16:23,376 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-21 17:16:23,924 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 17:16:23,925 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1034167308] provided 1 perfect and 1 imperfect interpolant sequences [2022-11-21 17:16:23,925 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-11-21 17:16:23,925 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [14, 13] total 26 [2022-11-21 17:16:23,925 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [805272119] [2022-11-21 17:16:23,926 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 17:16:23,926 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-11-21 17:16:23,926 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 17:16:23,927 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-11-21 17:16:23,927 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=102, Invalid=548, Unknown=0, NotChecked=0, Total=650 [2022-11-21 17:16:23,930 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 203 out of 310 [2022-11-21 17:16:23,932 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 447 places, 410 transitions, 1983 flow. Second operand has 13 states, 13 states have (on average 208.46153846153845) internal successors, (2710), 13 states have internal predecessors, (2710), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:16:23,933 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 17:16:23,933 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 203 of 310 [2022-11-21 17:16:23,933 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 17:16:31,901 INFO L130 PetriNetUnfolder]: 6192/29780 cut-off events. [2022-11-21 17:16:31,901 INFO L131 PetriNetUnfolder]: For 46862/48160 co-relation queries the response was YES. [2022-11-21 17:16:32,177 INFO L83 FinitePrefix]: Finished finitePrefix Result has 60393 conditions, 29780 events. 6192/29780 cut-off events. For 46862/48160 co-relation queries the response was YES. Maximal size of possible extension queue 1175. Compared 426308 event pairs, 2173 based on Foata normal form. 200/26637 useless extension candidates. Maximal degree in co-relation 60323. Up to 5128 conditions per place. [2022-11-21 17:16:32,248 INFO L137 encePairwiseOnDemand]: 287/310 looper letters, 198 selfloop transitions, 47 changer transitions 63/543 dead transitions. [2022-11-21 17:16:32,248 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 458 places, 543 transitions, 3239 flow [2022-11-21 17:16:32,249 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-11-21 17:16:32,249 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2022-11-21 17:16:32,255 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 4281 transitions. [2022-11-21 17:16:32,257 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6904838709677419 [2022-11-21 17:16:32,257 INFO L72 ComplementDD]: Start complementDD. Operand 20 states and 4281 transitions. [2022-11-21 17:16:32,257 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 4281 transitions. [2022-11-21 17:16:32,260 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 17:16:32,260 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 20 states and 4281 transitions. [2022-11-21 17:16:32,269 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 21 states, 20 states have (on average 214.05) internal successors, (4281), 20 states have internal predecessors, (4281), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:16:32,279 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 21 states, 21 states have (on average 310.0) internal successors, (6510), 21 states have internal predecessors, (6510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:16:32,280 INFO L81 ComplementDD]: Finished complementDD. Result has 21 states, 21 states have (on average 310.0) internal successors, (6510), 21 states have internal predecessors, (6510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:16:32,281 INFO L175 Difference]: Start difference. First operand has 447 places, 410 transitions, 1983 flow. Second operand 20 states and 4281 transitions. [2022-11-21 17:16:32,281 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 458 places, 543 transitions, 3239 flow