./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/weaver/array-eq-trans.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 8393723b Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07b09e40-de52-4fa4-97a4-182d8740ee15/bin/uautomizer-TMbwUNV5ro/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07b09e40-de52-4fa4-97a4-182d8740ee15/bin/uautomizer-TMbwUNV5ro/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07b09e40-de52-4fa4-97a4-182d8740ee15/bin/uautomizer-TMbwUNV5ro/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07b09e40-de52-4fa4-97a4-182d8740ee15/bin/uautomizer-TMbwUNV5ro/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/array-eq-trans.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07b09e40-de52-4fa4-97a4-182d8740ee15/bin/uautomizer-TMbwUNV5ro/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07b09e40-de52-4fa4-97a4-182d8740ee15/bin/uautomizer-TMbwUNV5ro --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 23bd321b64eb98f17ff91aefc669d9f5b78966b876ea50803bd27f8c9b624679 --- 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-8393723 [2022-11-18 21:02:21,239 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-18 21:02:21,245 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-18 21:02:21,285 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-18 21:02:21,290 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-18 21:02:21,295 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-18 21:02:21,300 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-18 21:02:21,308 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-18 21:02:21,310 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-18 21:02:21,314 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-18 21:02:21,316 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-18 21:02:21,318 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-18 21:02:21,319 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-18 21:02:21,323 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-18 21:02:21,324 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-18 21:02:21,326 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-18 21:02:21,329 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-18 21:02:21,336 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-18 21:02:21,338 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-18 21:02:21,340 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-18 21:02:21,341 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-18 21:02:21,346 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-18 21:02:21,347 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-18 21:02:21,348 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-18 21:02:21,353 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-18 21:02:21,357 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-18 21:02:21,357 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-18 21:02:21,358 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-18 21:02:21,359 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-18 21:02:21,359 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-18 21:02:21,359 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-18 21:02:21,360 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-18 21:02:21,361 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-18 21:02:21,362 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-18 21:02:21,362 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-18 21:02:21,362 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-18 21:02:21,363 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-18 21:02:21,363 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-18 21:02:21,364 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-18 21:02:21,365 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-18 21:02:21,365 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-18 21:02:21,366 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07b09e40-de52-4fa4-97a4-182d8740ee15/bin/uautomizer-TMbwUNV5ro/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-11-18 21:02:21,390 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-18 21:02:21,390 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-18 21:02:21,391 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-18 21:02:21,391 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-18 21:02:21,392 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-18 21:02:21,392 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-18 21:02:21,392 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-18 21:02:21,393 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-18 21:02:21,393 INFO L138 SettingsManager]: * Use SBE=true [2022-11-18 21:02:21,393 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-18 21:02:21,393 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-18 21:02:21,393 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-18 21:02:21,394 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-18 21:02:21,394 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-18 21:02:21,394 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-18 21:02:21,394 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-18 21:02:21,394 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-18 21:02:21,395 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-18 21:02:21,395 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-18 21:02:21,395 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-18 21:02:21,395 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-18 21:02:21,395 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-18 21:02:21,396 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-18 21:02:21,396 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-18 21:02:21,396 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-18 21:02:21,396 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-18 21:02:21,396 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-18 21:02:21,397 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-18 21:02:21,397 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-18 21:02:21,397 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-18 21:02:21,397 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-18 21:02:21,397 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-18 21:02:21,398 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-18 21:02:21,398 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_07b09e40-de52-4fa4-97a4-182d8740ee15/bin/uautomizer-TMbwUNV5ro/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07b09e40-de52-4fa4-97a4-182d8740ee15/bin/uautomizer-TMbwUNV5ro Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 23bd321b64eb98f17ff91aefc669d9f5b78966b876ea50803bd27f8c9b624679 [2022-11-18 21:02:21,657 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-18 21:02:21,679 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-18 21:02:21,682 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-18 21:02:21,684 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-18 21:02:21,685 INFO L275 PluginConnector]: CDTParser initialized [2022-11-18 21:02:21,686 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07b09e40-de52-4fa4-97a4-182d8740ee15/bin/uautomizer-TMbwUNV5ro/../../sv-benchmarks/c/weaver/array-eq-trans.wvr.c [2022-11-18 21:02:21,753 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07b09e40-de52-4fa4-97a4-182d8740ee15/bin/uautomizer-TMbwUNV5ro/data/46f656fc9/264f8b320ed64ef1996e622c57ac6aa1/FLAG1ebebca24 [2022-11-18 21:02:22,272 INFO L306 CDTParser]: Found 1 translation units. [2022-11-18 21:02:22,272 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07b09e40-de52-4fa4-97a4-182d8740ee15/sv-benchmarks/c/weaver/array-eq-trans.wvr.c [2022-11-18 21:02:22,286 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07b09e40-de52-4fa4-97a4-182d8740ee15/bin/uautomizer-TMbwUNV5ro/data/46f656fc9/264f8b320ed64ef1996e622c57ac6aa1/FLAG1ebebca24 [2022-11-18 21:02:22,614 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07b09e40-de52-4fa4-97a4-182d8740ee15/bin/uautomizer-TMbwUNV5ro/data/46f656fc9/264f8b320ed64ef1996e622c57ac6aa1 [2022-11-18 21:02:22,617 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-18 21:02:22,619 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-18 21:02:22,621 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-18 21:02:22,621 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-18 21:02:22,625 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-18 21:02:22,626 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 09:02:22" (1/1) ... [2022-11-18 21:02:22,627 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@313b213d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:02:22, skipping insertion in model container [2022-11-18 21:02:22,628 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 09:02:22" (1/1) ... [2022-11-18 21:02:22,636 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-18 21:02:22,657 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-18 21:02:22,999 WARN L234 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_07b09e40-de52-4fa4-97a4-182d8740ee15/sv-benchmarks/c/weaver/array-eq-trans.wvr.c[2737,2750] [2022-11-18 21:02:23,010 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-18 21:02:23,033 INFO L203 MainTranslator]: Completed pre-run [2022-11-18 21:02:23,059 WARN L234 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_07b09e40-de52-4fa4-97a4-182d8740ee15/sv-benchmarks/c/weaver/array-eq-trans.wvr.c[2737,2750] [2022-11-18 21:02:23,063 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-18 21:02:23,077 INFO L208 MainTranslator]: Completed translation [2022-11-18 21:02:23,077 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:02:23 WrapperNode [2022-11-18 21:02:23,077 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-18 21:02:23,079 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-18 21:02:23,079 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-18 21:02:23,079 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-18 21:02:23,089 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:02:23" (1/1) ... [2022-11-18 21:02:23,098 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:02:23" (1/1) ... [2022-11-18 21:02:23,126 INFO L138 Inliner]: procedures = 24, calls = 46, calls flagged for inlining = 10, calls inlined = 14, statements flattened = 204 [2022-11-18 21:02:23,126 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-18 21:02:23,127 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-18 21:02:23,127 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-18 21:02:23,128 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-18 21:02:23,138 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:02:23" (1/1) ... [2022-11-18 21:02:23,138 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:02:23" (1/1) ... [2022-11-18 21:02:23,142 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:02:23" (1/1) ... [2022-11-18 21:02:23,143 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:02:23" (1/1) ... [2022-11-18 21:02:23,152 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:02:23" (1/1) ... [2022-11-18 21:02:23,158 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:02:23" (1/1) ... [2022-11-18 21:02:23,161 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:02:23" (1/1) ... [2022-11-18 21:02:23,162 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:02:23" (1/1) ... [2022-11-18 21:02:23,166 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-18 21:02:23,167 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-18 21:02:23,167 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-18 21:02:23,167 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-18 21:02:23,168 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:02:23" (1/1) ... [2022-11-18 21:02:23,176 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-18 21:02:23,189 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07b09e40-de52-4fa4-97a4-182d8740ee15/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 21:02:23,213 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07b09e40-de52-4fa4-97a4-182d8740ee15/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-18 21:02:23,227 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07b09e40-de52-4fa4-97a4-182d8740ee15/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-18 21:02:23,254 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-18 21:02:23,254 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-11-18 21:02:23,254 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-11-18 21:02:23,254 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-11-18 21:02:23,255 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-11-18 21:02:23,255 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2022-11-18 21:02:23,255 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2022-11-18 21:02:23,255 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-18 21:02:23,255 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-18 21:02:23,255 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-18 21:02:23,256 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-18 21:02:23,256 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-18 21:02:23,256 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-18 21:02:23,256 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-18 21:02:23,256 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-18 21:02:23,258 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-18 21:02:23,381 INFO L235 CfgBuilder]: Building ICFG [2022-11-18 21:02:23,383 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-18 21:02:23,999 INFO L276 CfgBuilder]: Performing block encoding [2022-11-18 21:02:24,012 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-18 21:02:24,013 INFO L300 CfgBuilder]: Removed 6 assume(true) statements. [2022-11-18 21:02:24,015 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 09:02:24 BoogieIcfgContainer [2022-11-18 21:02:24,016 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-18 21:02:24,019 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-18 21:02:24,019 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-18 21:02:24,024 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-18 21:02:24,024 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.11 09:02:22" (1/3) ... [2022-11-18 21:02:24,025 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4ddda01c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 09:02:24, skipping insertion in model container [2022-11-18 21:02:24,025 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:02:23" (2/3) ... [2022-11-18 21:02:24,025 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4ddda01c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 09:02:24, skipping insertion in model container [2022-11-18 21:02:24,026 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 09:02:24" (3/3) ... [2022-11-18 21:02:24,027 INFO L112 eAbstractionObserver]: Analyzing ICFG array-eq-trans.wvr.c [2022-11-18 21:02:24,037 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-18 21:02:24,050 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-18 21:02:24,050 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-18 21:02:24,050 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-18 21:02:24,207 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2022-11-18 21:02:24,251 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 286 places, 306 transitions, 636 flow [2022-11-18 21:02:24,374 INFO L130 PetriNetUnfolder]: 30/303 cut-off events. [2022-11-18 21:02:24,374 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-11-18 21:02:24,381 INFO L83 FinitePrefix]: Finished finitePrefix Result has 316 conditions, 303 events. 30/303 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 236 event pairs, 0 based on Foata normal form. 0/272 useless extension candidates. Maximal degree in co-relation 201. Up to 3 conditions per place. [2022-11-18 21:02:24,382 INFO L82 GeneralOperation]: Start removeDead. Operand has 286 places, 306 transitions, 636 flow [2022-11-18 21:02:24,389 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 272 places, 292 transitions, 602 flow [2022-11-18 21:02:24,401 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-18 21:02:24,409 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;@3e3c7eb4, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-18 21:02:24,409 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2022-11-18 21:02:24,521 INFO L130 PetriNetUnfolder]: 30/291 cut-off events. [2022-11-18 21:02:24,521 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-11-18 21:02:24,521 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 21:02:24,522 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] [2022-11-18 21:02:24,523 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)] === [2022-11-18 21:02:24,528 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 21:02:24,529 INFO L85 PathProgramCache]: Analyzing trace with hash 749541122, now seen corresponding path program 1 times [2022-11-18 21:02:24,539 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 21:02:24,540 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1512139202] [2022-11-18 21:02:24,540 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 21:02:24,541 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 21:02:24,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:02:24,938 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 21:02:24,939 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 21:02:24,939 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1512139202] [2022-11-18 21:02:24,940 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1512139202] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 21:02:24,940 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 21:02:24,940 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-18 21:02:24,942 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1758069549] [2022-11-18 21:02:24,943 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 21:02:24,953 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-18 21:02:24,954 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 21:02:25,003 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-18 21:02:25,008 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-18 21:02:25,016 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 284 out of 306 [2022-11-18 21:02:25,024 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 272 places, 292 transitions, 602 flow. Second operand has 2 states, 2 states have (on average 290.0) internal successors, (580), 2 states have internal predecessors, (580), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:02:25,024 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 21:02:25,025 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 284 of 306 [2022-11-18 21:02:25,026 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 21:02:25,134 INFO L130 PetriNetUnfolder]: 15/277 cut-off events. [2022-11-18 21:02:25,134 INFO L131 PetriNetUnfolder]: For 12/12 co-relation queries the response was YES. [2022-11-18 21:02:25,136 INFO L83 FinitePrefix]: Finished finitePrefix Result has 297 conditions, 277 events. 15/277 cut-off events. For 12/12 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 224 event pairs, 0 based on Foata normal form. 21/274 useless extension candidates. Maximal degree in co-relation 192. Up to 7 conditions per place. [2022-11-18 21:02:25,139 INFO L137 encePairwiseOnDemand]: 291/306 looper letters, 6 selfloop transitions, 0 changer transitions 9/277 dead transitions. [2022-11-18 21:02:25,140 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 273 places, 277 transitions, 584 flow [2022-11-18 21:02:25,141 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-18 21:02:25,144 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2022-11-18 21:02:25,159 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 589 transitions. [2022-11-18 21:02:25,166 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9624183006535948 [2022-11-18 21:02:25,168 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 589 transitions. [2022-11-18 21:02:25,168 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 589 transitions. [2022-11-18 21:02:25,173 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 21:02:25,177 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 589 transitions. [2022-11-18 21:02:25,183 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 294.5) internal successors, (589), 2 states have internal predecessors, (589), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:02:25,195 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 306.0) internal successors, (918), 3 states have internal predecessors, (918), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:02:25,196 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 306.0) internal successors, (918), 3 states have internal predecessors, (918), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:02:25,199 INFO L175 Difference]: Start difference. First operand has 272 places, 292 transitions, 602 flow. Second operand 2 states and 589 transitions. [2022-11-18 21:02:25,201 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 273 places, 277 transitions, 584 flow [2022-11-18 21:02:25,209 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 267 places, 277 transitions, 572 flow, removed 0 selfloop flow, removed 6 redundant places. [2022-11-18 21:02:25,218 INFO L231 Difference]: Finished difference. Result has 267 places, 268 transitions, 542 flow [2022-11-18 21:02:25,221 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=306, PETRI_DIFFERENCE_MINUEND_FLOW=560, PETRI_DIFFERENCE_MINUEND_PLACES=266, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=277, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=277, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=542, PETRI_PLACES=267, PETRI_TRANSITIONS=268} [2022-11-18 21:02:25,226 INFO L288 CegarLoopForPetriNet]: 272 programPoint places, -5 predicate places. [2022-11-18 21:02:25,226 INFO L495 AbstractCegarLoop]: Abstraction has has 267 places, 268 transitions, 542 flow [2022-11-18 21:02:25,227 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 290.0) internal successors, (580), 2 states have internal predecessors, (580), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:02:25,227 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 21:02:25,228 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] [2022-11-18 21:02:25,228 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-18 21:02:25,229 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)] === [2022-11-18 21:02:25,230 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 21:02:25,230 INFO L85 PathProgramCache]: Analyzing trace with hash -1631454252, now seen corresponding path program 1 times [2022-11-18 21:02:25,231 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 21:02:25,231 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [694383235] [2022-11-18 21:02:25,232 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 21:02:25,232 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 21:02:25,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:02:25,830 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 21:02:25,830 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 21:02:25,831 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [694383235] [2022-11-18 21:02:25,831 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [694383235] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 21:02:25,832 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 21:02:25,833 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-18 21:02:25,835 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1629612084] [2022-11-18 21:02:25,836 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 21:02:25,839 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-18 21:02:25,839 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 21:02:25,840 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-18 21:02:25,841 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-18 21:02:25,844 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 233 out of 306 [2022-11-18 21:02:25,846 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 267 places, 268 transitions, 542 flow. Second operand has 5 states, 5 states have (on average 242.2) internal successors, (1211), 5 states have internal predecessors, (1211), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:02:25,847 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 21:02:25,852 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 233 of 306 [2022-11-18 21:02:25,852 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 21:02:26,053 INFO L130 PetriNetUnfolder]: 14/272 cut-off events. [2022-11-18 21:02:26,053 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-11-18 21:02:26,055 INFO L83 FinitePrefix]: Finished finitePrefix Result has 329 conditions, 272 events. 14/272 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 217 event pairs, 0 based on Foata normal form. 1/258 useless extension candidates. Maximal degree in co-relation 326. Up to 48 conditions per place. [2022-11-18 21:02:26,056 INFO L137 encePairwiseOnDemand]: 302/306 looper letters, 47 selfloop transitions, 0 changer transitions 4/271 dead transitions. [2022-11-18 21:02:26,056 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 262 places, 271 transitions, 650 flow [2022-11-18 21:02:26,057 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-18 21:02:26,057 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-18 21:02:26,061 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1217 transitions. [2022-11-18 21:02:26,062 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7954248366013071 [2022-11-18 21:02:26,062 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1217 transitions. [2022-11-18 21:02:26,062 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1217 transitions. [2022-11-18 21:02:26,063 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 21:02:26,063 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1217 transitions. [2022-11-18 21:02:26,067 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 243.4) internal successors, (1217), 5 states have internal predecessors, (1217), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:02:26,071 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 306.0) internal successors, (1836), 6 states have internal predecessors, (1836), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:02:26,073 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 306.0) internal successors, (1836), 6 states have internal predecessors, (1836), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:02:26,073 INFO L175 Difference]: Start difference. First operand has 267 places, 268 transitions, 542 flow. Second operand 5 states and 1217 transitions. [2022-11-18 21:02:26,073 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 262 places, 271 transitions, 650 flow [2022-11-18 21:02:26,076 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 262 places, 271 transitions, 650 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-18 21:02:26,083 INFO L231 Difference]: Finished difference. Result has 265 places, 267 transitions, 546 flow [2022-11-18 21:02:26,084 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=306, PETRI_DIFFERENCE_MINUEND_FLOW=542, PETRI_DIFFERENCE_MINUEND_PLACES=258, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=268, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=268, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=546, PETRI_PLACES=265, PETRI_TRANSITIONS=267} [2022-11-18 21:02:26,085 INFO L288 CegarLoopForPetriNet]: 272 programPoint places, -7 predicate places. [2022-11-18 21:02:26,085 INFO L495 AbstractCegarLoop]: Abstraction has has 265 places, 267 transitions, 546 flow [2022-11-18 21:02:26,086 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 242.2) internal successors, (1211), 5 states have internal predecessors, (1211), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:02:26,086 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 21:02:26,087 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] [2022-11-18 21:02:26,087 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-18 21:02:26,088 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)] === [2022-11-18 21:02:26,100 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 21:02:26,101 INFO L85 PathProgramCache]: Analyzing trace with hash 882419116, now seen corresponding path program 1 times [2022-11-18 21:02:26,101 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 21:02:26,101 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1283115742] [2022-11-18 21:02:26,101 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 21:02:26,102 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 21:02:26,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:02:27,111 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 21:02:27,113 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 21:02:27,113 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1283115742] [2022-11-18 21:02:27,113 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1283115742] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 21:02:27,114 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 21:02:27,114 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-11-18 21:02:27,116 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [174510218] [2022-11-18 21:02:27,116 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 21:02:27,118 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-18 21:02:27,119 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 21:02:27,120 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-18 21:02:27,121 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2022-11-18 21:02:27,125 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 213 out of 306 [2022-11-18 21:02:27,144 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 265 places, 267 transitions, 546 flow. Second operand has 11 states, 11 states have (on average 217.27272727272728) internal successors, (2390), 11 states have internal predecessors, (2390), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:02:27,144 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 21:02:27,144 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 213 of 306 [2022-11-18 21:02:27,145 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 21:02:28,242 INFO L130 PetriNetUnfolder]: 253/1391 cut-off events. [2022-11-18 21:02:28,242 INFO L131 PetriNetUnfolder]: For 56/72 co-relation queries the response was YES. [2022-11-18 21:02:28,252 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2005 conditions, 1391 events. 253/1391 cut-off events. For 56/72 co-relation queries the response was YES. Maximal size of possible extension queue 46. Compared 7342 event pairs, 62 based on Foata normal form. 2/1247 useless extension candidates. Maximal degree in co-relation 1998. Up to 161 conditions per place. [2022-11-18 21:02:28,260 INFO L137 encePairwiseOnDemand]: 281/306 looper letters, 204 selfloop transitions, 26 changer transitions 9/430 dead transitions. [2022-11-18 21:02:28,261 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 278 places, 430 transitions, 1378 flow [2022-11-18 21:02:28,261 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-11-18 21:02:28,295 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2022-11-18 21:02:28,301 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 3866 transitions. [2022-11-18 21:02:28,303 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7431757016532103 [2022-11-18 21:02:28,303 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 3866 transitions. [2022-11-18 21:02:28,304 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 3866 transitions. [2022-11-18 21:02:28,306 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 21:02:28,308 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 3866 transitions. [2022-11-18 21:02:28,319 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 227.41176470588235) internal successors, (3866), 17 states have internal predecessors, (3866), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:02:28,329 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 306.0) internal successors, (5508), 18 states have internal predecessors, (5508), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:02:28,335 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 306.0) internal successors, (5508), 18 states have internal predecessors, (5508), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:02:28,335 INFO L175 Difference]: Start difference. First operand has 265 places, 267 transitions, 546 flow. Second operand 17 states and 3866 transitions. [2022-11-18 21:02:28,335 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 278 places, 430 transitions, 1378 flow [2022-11-18 21:02:28,339 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 275 places, 430 transitions, 1364 flow, removed 7 selfloop flow, removed 3 redundant places. [2022-11-18 21:02:28,346 INFO L231 Difference]: Finished difference. Result has 287 places, 287 transitions, 723 flow [2022-11-18 21:02:28,347 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=306, PETRI_DIFFERENCE_MINUEND_FLOW=540, PETRI_DIFFERENCE_MINUEND_PLACES=259, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=267, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=247, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=723, PETRI_PLACES=287, PETRI_TRANSITIONS=287} [2022-11-18 21:02:28,348 INFO L288 CegarLoopForPetriNet]: 272 programPoint places, 15 predicate places. [2022-11-18 21:02:28,348 INFO L495 AbstractCegarLoop]: Abstraction has has 287 places, 287 transitions, 723 flow [2022-11-18 21:02:28,349 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 217.27272727272728) internal successors, (2390), 11 states have internal predecessors, (2390), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:02:28,349 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 21:02:28,350 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 21:02:28,350 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-18 21:02:28,350 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)] === [2022-11-18 21:02:28,351 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 21:02:28,351 INFO L85 PathProgramCache]: Analyzing trace with hash 1695636344, now seen corresponding path program 1 times [2022-11-18 21:02:28,351 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 21:02:28,351 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1803791679] [2022-11-18 21:02:28,352 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 21:02:28,352 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 21:02:28,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:02:28,602 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 21:02:28,603 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 21:02:28,603 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1803791679] [2022-11-18 21:02:28,604 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1803791679] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 21:02:28,604 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 21:02:28,604 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-18 21:02:28,604 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [881119459] [2022-11-18 21:02:28,604 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 21:02:28,606 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-18 21:02:28,609 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 21:02:28,610 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-18 21:02:28,611 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-18 21:02:28,613 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 228 out of 306 [2022-11-18 21:02:28,615 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 287 places, 287 transitions, 723 flow. Second operand has 6 states, 6 states have (on average 236.33333333333334) internal successors, (1418), 6 states have internal predecessors, (1418), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:02:28,615 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 21:02:28,615 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 228 of 306 [2022-11-18 21:02:28,615 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 21:02:28,905 INFO L130 PetriNetUnfolder]: 46/843 cut-off events. [2022-11-18 21:02:28,905 INFO L131 PetriNetUnfolder]: For 77/87 co-relation queries the response was YES. [2022-11-18 21:02:28,908 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1194 conditions, 843 events. 46/843 cut-off events. For 77/87 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 3239 event pairs, 3 based on Foata normal form. 5/803 useless extension candidates. Maximal degree in co-relation 1177. Up to 154 conditions per place. [2022-11-18 21:02:28,911 INFO L137 encePairwiseOnDemand]: 300/306 looper letters, 54 selfloop transitions, 6 changer transitions 9/295 dead transitions. [2022-11-18 21:02:28,911 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 289 places, 295 transitions, 893 flow [2022-11-18 21:02:28,911 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-18 21:02:28,912 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-11-18 21:02:28,914 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1426 transitions. [2022-11-18 21:02:28,915 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7766884531590414 [2022-11-18 21:02:28,915 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1426 transitions. [2022-11-18 21:02:28,915 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1426 transitions. [2022-11-18 21:02:28,916 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 21:02:28,917 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1426 transitions. [2022-11-18 21:02:28,920 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 237.66666666666666) internal successors, (1426), 6 states have internal predecessors, (1426), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:02:28,924 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 306.0) internal successors, (2142), 7 states have internal predecessors, (2142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:02:28,925 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 306.0) internal successors, (2142), 7 states have internal predecessors, (2142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:02:28,925 INFO L175 Difference]: Start difference. First operand has 287 places, 287 transitions, 723 flow. Second operand 6 states and 1426 transitions. [2022-11-18 21:02:28,925 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 289 places, 295 transitions, 893 flow [2022-11-18 21:02:28,930 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 283 places, 295 transitions, 879 flow, removed 4 selfloop flow, removed 6 redundant places. [2022-11-18 21:02:28,934 INFO L231 Difference]: Finished difference. Result has 286 places, 286 transitions, 725 flow [2022-11-18 21:02:28,935 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=306, PETRI_DIFFERENCE_MINUEND_FLOW=709, PETRI_DIFFERENCE_MINUEND_PLACES=278, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=287, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=281, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=725, PETRI_PLACES=286, PETRI_TRANSITIONS=286} [2022-11-18 21:02:28,936 INFO L288 CegarLoopForPetriNet]: 272 programPoint places, 14 predicate places. [2022-11-18 21:02:28,936 INFO L495 AbstractCegarLoop]: Abstraction has has 286 places, 286 transitions, 725 flow [2022-11-18 21:02:28,937 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 236.33333333333334) internal successors, (1418), 6 states have internal predecessors, (1418), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:02:28,937 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 21:02:28,938 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] [2022-11-18 21:02:28,938 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-18 21:02:28,938 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)] === [2022-11-18 21:02:28,939 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 21:02:28,939 INFO L85 PathProgramCache]: Analyzing trace with hash -883193550, now seen corresponding path program 1 times [2022-11-18 21:02:28,939 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 21:02:28,939 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1835055553] [2022-11-18 21:02:28,940 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 21:02:28,940 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 21:02:28,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:02:29,282 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 21:02:29,283 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 21:02:29,284 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1835055553] [2022-11-18 21:02:29,284 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1835055553] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 21:02:29,284 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 21:02:29,284 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-18 21:02:29,285 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [255663762] [2022-11-18 21:02:29,285 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 21:02:29,285 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-18 21:02:29,286 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 21:02:29,286 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-18 21:02:29,286 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2022-11-18 21:02:29,289 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 226 out of 306 [2022-11-18 21:02:29,291 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 286 places, 286 transitions, 725 flow. Second operand has 8 states, 8 states have (on average 231.625) internal successors, (1853), 8 states have internal predecessors, (1853), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:02:29,292 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 21:02:29,292 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 226 of 306 [2022-11-18 21:02:29,292 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 21:02:29,944 INFO L130 PetriNetUnfolder]: 293/1921 cut-off events. [2022-11-18 21:02:29,944 INFO L131 PetriNetUnfolder]: For 212/263 co-relation queries the response was YES. [2022-11-18 21:02:29,952 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2793 conditions, 1921 events. 293/1921 cut-off events. For 212/263 co-relation queries the response was YES. Maximal size of possible extension queue 59. Compared 12064 event pairs, 113 based on Foata normal form. 13/1728 useless extension candidates. Maximal degree in co-relation 2776. Up to 242 conditions per place. [2022-11-18 21:02:29,959 INFO L137 encePairwiseOnDemand]: 292/306 looper letters, 112 selfloop transitions, 17 changer transitions 7/340 dead transitions. [2022-11-18 21:02:29,960 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 293 places, 340 transitions, 1150 flow [2022-11-18 21:02:29,960 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-18 21:02:29,960 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2022-11-18 21:02:29,965 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 2603 transitions. [2022-11-18 21:02:29,966 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.773321449792038 [2022-11-18 21:02:29,967 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 2603 transitions. [2022-11-18 21:02:29,967 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 2603 transitions. [2022-11-18 21:02:29,969 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 21:02:29,969 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 2603 transitions. [2022-11-18 21:02:29,975 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 236.63636363636363) internal successors, (2603), 11 states have internal predecessors, (2603), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:02:29,982 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 306.0) internal successors, (3672), 12 states have internal predecessors, (3672), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:02:29,984 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 306.0) internal successors, (3672), 12 states have internal predecessors, (3672), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:02:29,984 INFO L175 Difference]: Start difference. First operand has 286 places, 286 transitions, 725 flow. Second operand 11 states and 2603 transitions. [2022-11-18 21:02:29,985 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 293 places, 340 transitions, 1150 flow [2022-11-18 21:02:29,990 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 288 places, 340 transitions, 1132 flow, removed 3 selfloop flow, removed 5 redundant places. [2022-11-18 21:02:29,994 INFO L231 Difference]: Finished difference. Result has 291 places, 289 transitions, 765 flow [2022-11-18 21:02:29,995 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=306, PETRI_DIFFERENCE_MINUEND_FLOW=707, PETRI_DIFFERENCE_MINUEND_PLACES=278, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=286, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=271, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=765, PETRI_PLACES=291, PETRI_TRANSITIONS=289} [2022-11-18 21:02:29,996 INFO L288 CegarLoopForPetriNet]: 272 programPoint places, 19 predicate places. [2022-11-18 21:02:29,996 INFO L495 AbstractCegarLoop]: Abstraction has has 291 places, 289 transitions, 765 flow [2022-11-18 21:02:29,998 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 231.625) internal successors, (1853), 8 states have internal predecessors, (1853), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:02:29,998 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 21:02:29,998 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 21:02:29,998 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-18 21:02:29,999 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)] === [2022-11-18 21:02:29,999 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 21:02:30,000 INFO L85 PathProgramCache]: Analyzing trace with hash 1058484689, now seen corresponding path program 1 times [2022-11-18 21:02:30,000 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 21:02:30,000 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [918410932] [2022-11-18 21:02:30,000 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 21:02:30,001 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 21:02:30,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:02:30,377 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 21:02:30,377 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 21:02:30,377 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [918410932] [2022-11-18 21:02:30,378 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [918410932] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 21:02:30,379 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1612103376] [2022-11-18 21:02:30,379 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 21:02:30,379 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 21:02:30,380 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07b09e40-de52-4fa4-97a4-182d8740ee15/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 21:02:30,386 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07b09e40-de52-4fa4-97a4-182d8740ee15/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 21:02:30,423 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07b09e40-de52-4fa4-97a4-182d8740ee15/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-18 21:02:30,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:02:30,616 INFO L263 TraceCheckSpWp]: Trace formula consists of 432 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-18 21:02:30,627 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 21:02:31,408 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 21:02:31,408 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 21:02:31,819 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 21:02:31,820 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1612103376] provided 1 perfect and 1 imperfect interpolant sequences [2022-11-18 21:02:31,820 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-11-18 21:02:31,820 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [9, 8] total 18 [2022-11-18 21:02:31,821 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [12837258] [2022-11-18 21:02:31,821 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 21:02:31,822 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-18 21:02:31,822 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 21:02:31,822 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-18 21:02:31,823 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=226, Unknown=0, NotChecked=0, Total=306 [2022-11-18 21:02:31,826 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 226 out of 306 [2022-11-18 21:02:31,828 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 291 places, 289 transitions, 765 flow. Second operand has 8 states, 8 states have (on average 231.625) internal successors, (1853), 8 states have internal predecessors, (1853), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:02:31,828 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 21:02:31,829 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 226 of 306 [2022-11-18 21:02:31,829 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 21:02:33,033 INFO L130 PetriNetUnfolder]: 598/3586 cut-off events. [2022-11-18 21:02:33,033 INFO L131 PetriNetUnfolder]: For 884/984 co-relation queries the response was YES. [2022-11-18 21:02:33,053 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5514 conditions, 3586 events. 598/3586 cut-off events. For 884/984 co-relation queries the response was YES. Maximal size of possible extension queue 128. Compared 29292 event pairs, 189 based on Foata normal form. 0/3250 useless extension candidates. Maximal degree in co-relation 5497. Up to 436 conditions per place. [2022-11-18 21:02:33,068 INFO L137 encePairwiseOnDemand]: 290/306 looper letters, 115 selfloop transitions, 26 changer transitions 0/354 dead transitions. [2022-11-18 21:02:33,068 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 304 places, 354 transitions, 1211 flow [2022-11-18 21:02:33,069 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-18 21:02:33,069 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2022-11-18 21:02:33,074 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 3524 transitions. [2022-11-18 21:02:33,076 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7677559912854031 [2022-11-18 21:02:33,077 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 3524 transitions. [2022-11-18 21:02:33,077 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 3524 transitions. [2022-11-18 21:02:33,079 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 21:02:33,079 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 3524 transitions. [2022-11-18 21:02:33,087 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 234.93333333333334) internal successors, (3524), 15 states have internal predecessors, (3524), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:02:33,096 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 306.0) internal successors, (4896), 16 states have internal predecessors, (4896), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:02:33,099 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 306.0) internal successors, (4896), 16 states have internal predecessors, (4896), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:02:33,099 INFO L175 Difference]: Start difference. First operand has 291 places, 289 transitions, 765 flow. Second operand 15 states and 3524 transitions. [2022-11-18 21:02:33,099 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 304 places, 354 transitions, 1211 flow [2022-11-18 21:02:33,104 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 300 places, 354 transitions, 1198 flow, removed 2 selfloop flow, removed 4 redundant places. [2022-11-18 21:02:33,109 INFO L231 Difference]: Finished difference. Result has 308 places, 301 transitions, 882 flow [2022-11-18 21:02:33,110 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=306, PETRI_DIFFERENCE_MINUEND_FLOW=752, PETRI_DIFFERENCE_MINUEND_PLACES=286, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=289, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=270, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=882, PETRI_PLACES=308, PETRI_TRANSITIONS=301} [2022-11-18 21:02:33,111 INFO L288 CegarLoopForPetriNet]: 272 programPoint places, 36 predicate places. [2022-11-18 21:02:33,111 INFO L495 AbstractCegarLoop]: Abstraction has has 308 places, 301 transitions, 882 flow [2022-11-18 21:02:33,112 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 231.625) internal successors, (1853), 8 states have internal predecessors, (1853), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:02:33,113 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 21:02:33,113 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 21:02:33,131 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07b09e40-de52-4fa4-97a4-182d8740ee15/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-18 21:02:33,328 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07b09e40-de52-4fa4-97a4-182d8740ee15/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2022-11-18 21:02:33,329 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)] === [2022-11-18 21:02:33,329 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 21:02:33,330 INFO L85 PathProgramCache]: Analyzing trace with hash 1201685273, now seen corresponding path program 1 times [2022-11-18 21:02:33,330 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 21:02:33,335 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2036411972] [2022-11-18 21:02:33,336 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 21:02:33,336 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 21:02:33,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:02:34,217 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-18 21:02:34,218 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 21:02:34,218 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2036411972] [2022-11-18 21:02:34,218 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2036411972] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 21:02:34,218 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 21:02:34,218 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-11-18 21:02:34,219 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1645810155] [2022-11-18 21:02:34,219 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 21:02:34,219 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-11-18 21:02:34,219 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 21:02:34,220 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-11-18 21:02:34,220 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=115, Unknown=0, NotChecked=0, Total=156 [2022-11-18 21:02:34,224 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 191 out of 306 [2022-11-18 21:02:34,236 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 308 places, 301 transitions, 882 flow. Second operand has 13 states, 13 states have (on average 197.07692307692307) internal successors, (2562), 13 states have internal predecessors, (2562), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:02:34,244 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 21:02:34,245 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 191 of 306 [2022-11-18 21:02:34,245 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 21:02:36,076 INFO L130 PetriNetUnfolder]: 1054/4799 cut-off events. [2022-11-18 21:02:36,076 INFO L131 PetriNetUnfolder]: For 1761/1886 co-relation queries the response was YES. [2022-11-18 21:02:36,111 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8312 conditions, 4799 events. 1054/4799 cut-off events. For 1761/1886 co-relation queries the response was YES. Maximal size of possible extension queue 226. Compared 41912 event pairs, 308 based on Foata normal form. 70/4567 useless extension candidates. Maximal degree in co-relation 8289. Up to 781 conditions per place. [2022-11-18 21:02:36,132 INFO L137 encePairwiseOnDemand]: 280/306 looper letters, 155 selfloop transitions, 26 changer transitions 12/379 dead transitions. [2022-11-18 21:02:36,132 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 325 places, 379 transitions, 1494 flow [2022-11-18 21:02:36,133 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-11-18 21:02:36,133 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-11-18 21:02:36,140 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 3603 transitions. [2022-11-18 21:02:36,142 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6541394335511983 [2022-11-18 21:02:36,142 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 3603 transitions. [2022-11-18 21:02:36,142 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 3603 transitions. [2022-11-18 21:02:36,144 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 21:02:36,145 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 3603 transitions. [2022-11-18 21:02:36,153 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 200.16666666666666) internal successors, (3603), 18 states have internal predecessors, (3603), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:02:36,162 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 306.0) internal successors, (5814), 19 states have internal predecessors, (5814), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:02:36,164 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 306.0) internal successors, (5814), 19 states have internal predecessors, (5814), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:02:36,164 INFO L175 Difference]: Start difference. First operand has 308 places, 301 transitions, 882 flow. Second operand 18 states and 3603 transitions. [2022-11-18 21:02:36,165 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 325 places, 379 transitions, 1494 flow [2022-11-18 21:02:36,172 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 321 places, 379 transitions, 1482 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-11-18 21:02:36,177 INFO L231 Difference]: Finished difference. Result has 327 places, 295 transitions, 897 flow [2022-11-18 21:02:36,178 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=306, PETRI_DIFFERENCE_MINUEND_FLOW=858, PETRI_DIFFERENCE_MINUEND_PLACES=304, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=299, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=274, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=897, PETRI_PLACES=327, PETRI_TRANSITIONS=295} [2022-11-18 21:02:36,179 INFO L288 CegarLoopForPetriNet]: 272 programPoint places, 55 predicate places. [2022-11-18 21:02:36,180 INFO L495 AbstractCegarLoop]: Abstraction has has 327 places, 295 transitions, 897 flow [2022-11-18 21:02:36,181 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 197.07692307692307) internal successors, (2562), 13 states have internal predecessors, (2562), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:02:36,181 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 21:02:36,181 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 21:02:36,182 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-18 21:02:36,182 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)] === [2022-11-18 21:02:36,182 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 21:02:36,183 INFO L85 PathProgramCache]: Analyzing trace with hash -1692638105, now seen corresponding path program 1 times [2022-11-18 21:02:36,183 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 21:02:36,183 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1786526922] [2022-11-18 21:02:36,183 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 21:02:36,183 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 21:02:36,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:02:36,618 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-18 21:02:36,618 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 21:02:36,619 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1786526922] [2022-11-18 21:02:36,619 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1786526922] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 21:02:36,619 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [446401056] [2022-11-18 21:02:36,619 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 21:02:36,620 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 21:02:36,620 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07b09e40-de52-4fa4-97a4-182d8740ee15/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 21:02:36,621 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07b09e40-de52-4fa4-97a4-182d8740ee15/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 21:02:36,628 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07b09e40-de52-4fa4-97a4-182d8740ee15/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-18 21:02:36,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:02:36,800 INFO L263 TraceCheckSpWp]: Trace formula consists of 439 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-18 21:02:36,812 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 21:02:37,230 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-18 21:02:37,230 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 21:02:37,231 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [446401056] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 21:02:37,231 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-18 21:02:37,231 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [9] total 14 [2022-11-18 21:02:37,231 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1488773518] [2022-11-18 21:02:37,232 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 21:02:37,232 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-18 21:02:37,232 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 21:02:37,233 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-18 21:02:37,233 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=145, Unknown=0, NotChecked=0, Total=182 [2022-11-18 21:02:37,235 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 232 out of 306 [2022-11-18 21:02:37,237 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 327 places, 295 transitions, 897 flow. Second operand has 7 states, 7 states have (on average 238.57142857142858) internal successors, (1670), 7 states have internal predecessors, (1670), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:02:37,237 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 21:02:37,238 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 232 of 306 [2022-11-18 21:02:37,238 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 21:02:38,806 INFO L130 PetriNetUnfolder]: 1149/5355 cut-off events. [2022-11-18 21:02:38,806 INFO L131 PetriNetUnfolder]: For 2097/2243 co-relation queries the response was YES. [2022-11-18 21:02:38,884 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8705 conditions, 5355 events. 1149/5355 cut-off events. For 2097/2243 co-relation queries the response was YES. Maximal size of possible extension queue 229. Compared 49387 event pairs, 451 based on Foata normal form. 83/4931 useless extension candidates. Maximal degree in co-relation 8675. Up to 833 conditions per place. [2022-11-18 21:02:38,902 INFO L137 encePairwiseOnDemand]: 296/306 looper letters, 95 selfloop transitions, 11 changer transitions 2/335 dead transitions. [2022-11-18 21:02:38,902 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 328 places, 335 transitions, 1236 flow [2022-11-18 21:02:38,903 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-18 21:02:38,903 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-11-18 21:02:38,907 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1950 transitions. [2022-11-18 21:02:38,908 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7965686274509803 [2022-11-18 21:02:38,908 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1950 transitions. [2022-11-18 21:02:38,912 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1950 transitions. [2022-11-18 21:02:38,914 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 21:02:38,914 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1950 transitions. [2022-11-18 21:02:38,919 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 243.75) internal successors, (1950), 8 states have internal predecessors, (1950), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:02:38,924 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 306.0) internal successors, (2754), 9 states have internal predecessors, (2754), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:02:38,925 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 306.0) internal successors, (2754), 9 states have internal predecessors, (2754), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:02:38,925 INFO L175 Difference]: Start difference. First operand has 327 places, 295 transitions, 897 flow. Second operand 8 states and 1950 transitions. [2022-11-18 21:02:38,925 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 328 places, 335 transitions, 1236 flow [2022-11-18 21:02:38,940 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 310 places, 335 transitions, 1162 flow, removed 15 selfloop flow, removed 18 redundant places. [2022-11-18 21:02:38,945 INFO L231 Difference]: Finished difference. Result has 313 places, 298 transitions, 876 flow [2022-11-18 21:02:38,945 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=306, PETRI_DIFFERENCE_MINUEND_FLOW=825, PETRI_DIFFERENCE_MINUEND_PLACES=303, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=295, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=284, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=876, PETRI_PLACES=313, PETRI_TRANSITIONS=298} [2022-11-18 21:02:38,948 INFO L288 CegarLoopForPetriNet]: 272 programPoint places, 41 predicate places. [2022-11-18 21:02:38,949 INFO L495 AbstractCegarLoop]: Abstraction has has 313 places, 298 transitions, 876 flow [2022-11-18 21:02:38,950 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 238.57142857142858) internal successors, (1670), 7 states have internal predecessors, (1670), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:02:38,950 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 21:02:38,950 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 21:02:38,962 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07b09e40-de52-4fa4-97a4-182d8740ee15/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-18 21:02:39,156 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07b09e40-de52-4fa4-97a4-182d8740ee15/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 21:02:39,157 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)] === [2022-11-18 21:02:39,158 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 21:02:39,158 INFO L85 PathProgramCache]: Analyzing trace with hash -752031935, now seen corresponding path program 1 times [2022-11-18 21:02:39,158 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 21:02:39,158 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1698787826] [2022-11-18 21:02:39,158 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 21:02:39,159 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 21:02:39,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:02:39,486 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-18 21:02:39,487 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 21:02:39,487 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1698787826] [2022-11-18 21:02:39,487 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1698787826] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 21:02:39,487 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [976448078] [2022-11-18 21:02:39,488 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 21:02:39,488 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 21:02:39,488 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07b09e40-de52-4fa4-97a4-182d8740ee15/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 21:02:39,490 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07b09e40-de52-4fa4-97a4-182d8740ee15/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 21:02:39,519 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07b09e40-de52-4fa4-97a4-182d8740ee15/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-18 21:02:39,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:02:39,660 INFO L263 TraceCheckSpWp]: Trace formula consists of 452 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-18 21:02:39,666 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 21:02:40,397 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-18 21:02:40,397 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 21:02:40,771 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-18 21:02:40,772 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [976448078] provided 1 perfect and 1 imperfect interpolant sequences [2022-11-18 21:02:40,772 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-11-18 21:02:40,772 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [9, 8] total 18 [2022-11-18 21:02:40,773 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [731359742] [2022-11-18 21:02:40,773 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 21:02:40,775 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-18 21:02:40,776 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 21:02:40,776 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-18 21:02:40,777 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=226, Unknown=0, NotChecked=0, Total=306 [2022-11-18 21:02:40,779 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 226 out of 306 [2022-11-18 21:02:40,781 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 313 places, 298 transitions, 876 flow. Second operand has 8 states, 8 states have (on average 232.25) internal successors, (1858), 8 states have internal predecessors, (1858), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:02:40,781 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 21:02:40,781 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 226 of 306 [2022-11-18 21:02:40,782 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 21:02:41,791 INFO L130 PetriNetUnfolder]: 363/3406 cut-off events. [2022-11-18 21:02:41,791 INFO L131 PetriNetUnfolder]: For 1250/1373 co-relation queries the response was YES. [2022-11-18 21:02:41,811 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5306 conditions, 3406 events. 363/3406 cut-off events. For 1250/1373 co-relation queries the response was YES. Maximal size of possible extension queue 92. Compared 28066 event pairs, 121 based on Foata normal form. 23/3194 useless extension candidates. Maximal degree in co-relation 5278. Up to 393 conditions per place. [2022-11-18 21:02:41,822 INFO L137 encePairwiseOnDemand]: 295/306 looper letters, 94 selfloop transitions, 17 changer transitions 6/328 dead transitions. [2022-11-18 21:02:41,822 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 321 places, 328 transitions, 1192 flow [2022-11-18 21:02:41,823 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-18 21:02:41,823 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2022-11-18 21:02:41,829 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 2591 transitions. [2022-11-18 21:02:41,830 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7697563874034462 [2022-11-18 21:02:41,831 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 2591 transitions. [2022-11-18 21:02:41,831 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 2591 transitions. [2022-11-18 21:02:41,833 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 21:02:41,833 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 2591 transitions. [2022-11-18 21:02:41,841 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 235.54545454545453) internal successors, (2591), 11 states have internal predecessors, (2591), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:02:41,848 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 306.0) internal successors, (3672), 12 states have internal predecessors, (3672), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:02:41,850 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 306.0) internal successors, (3672), 12 states have internal predecessors, (3672), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:02:41,850 INFO L175 Difference]: Start difference. First operand has 313 places, 298 transitions, 876 flow. Second operand 11 states and 2591 transitions. [2022-11-18 21:02:41,850 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 321 places, 328 transitions, 1192 flow [2022-11-18 21:02:41,859 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 313 places, 328 transitions, 1149 flow, removed 12 selfloop flow, removed 8 redundant places. [2022-11-18 21:02:41,865 INFO L231 Difference]: Finished difference. Result has 318 places, 292 transitions, 863 flow [2022-11-18 21:02:41,866 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=306, PETRI_DIFFERENCE_MINUEND_FLOW=817, PETRI_DIFFERENCE_MINUEND_PLACES=303, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=293, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=277, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=863, PETRI_PLACES=318, PETRI_TRANSITIONS=292} [2022-11-18 21:02:41,867 INFO L288 CegarLoopForPetriNet]: 272 programPoint places, 46 predicate places. [2022-11-18 21:02:41,867 INFO L495 AbstractCegarLoop]: Abstraction has has 318 places, 292 transitions, 863 flow [2022-11-18 21:02:41,868 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 232.25) internal successors, (1858), 8 states have internal predecessors, (1858), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:02:41,868 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 21:02:41,868 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 21:02:41,875 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07b09e40-de52-4fa4-97a4-182d8740ee15/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-18 21:02:42,074 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07b09e40-de52-4fa4-97a4-182d8740ee15/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 21:02:42,075 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)] === [2022-11-18 21:02:42,075 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 21:02:42,075 INFO L85 PathProgramCache]: Analyzing trace with hash 890118300, now seen corresponding path program 1 times [2022-11-18 21:02:42,075 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 21:02:42,075 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [383222595] [2022-11-18 21:02:42,075 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 21:02:42,076 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 21:02:42,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:02:42,417 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-18 21:02:42,417 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 21:02:42,417 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [383222595] [2022-11-18 21:02:42,417 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [383222595] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 21:02:42,418 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 21:02:42,418 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-18 21:02:42,418 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [848739101] [2022-11-18 21:02:42,418 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 21:02:42,419 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-18 21:02:42,419 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 21:02:42,420 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-18 21:02:42,420 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-18 21:02:42,423 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 228 out of 306 [2022-11-18 21:02:42,426 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 318 places, 292 transitions, 863 flow. Second operand has 6 states, 6 states have (on average 236.33333333333334) internal successors, (1418), 6 states have internal predecessors, (1418), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:02:42,426 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 21:02:42,426 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 228 of 306 [2022-11-18 21:02:42,426 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 21:02:43,102 INFO L130 PetriNetUnfolder]: 67/2354 cut-off events. [2022-11-18 21:02:43,102 INFO L131 PetriNetUnfolder]: For 589/598 co-relation queries the response was YES. [2022-11-18 21:02:43,108 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3784 conditions, 2354 events. 67/2354 cut-off events. For 589/598 co-relation queries the response was YES. Maximal size of possible extension queue 41. Compared 18501 event pairs, 4 based on Foata normal form. 27/2277 useless extension candidates. Maximal degree in co-relation 3756. Up to 561 conditions per place. [2022-11-18 21:02:43,113 INFO L137 encePairwiseOnDemand]: 300/306 looper letters, 52 selfloop transitions, 5 changer transitions 7/298 dead transitions. [2022-11-18 21:02:43,113 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 320 places, 298 transitions, 1014 flow [2022-11-18 21:02:43,114 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-18 21:02:43,114 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-11-18 21:02:43,117 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1426 transitions. [2022-11-18 21:02:43,118 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7766884531590414 [2022-11-18 21:02:43,118 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1426 transitions. [2022-11-18 21:02:43,118 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1426 transitions. [2022-11-18 21:02:43,119 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 21:02:43,120 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1426 transitions. [2022-11-18 21:02:43,123 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 237.66666666666666) internal successors, (1426), 6 states have internal predecessors, (1426), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:02:43,127 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 306.0) internal successors, (2142), 7 states have internal predecessors, (2142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:02:43,128 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 306.0) internal successors, (2142), 7 states have internal predecessors, (2142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:02:43,128 INFO L175 Difference]: Start difference. First operand has 318 places, 292 transitions, 863 flow. Second operand 6 states and 1426 transitions. [2022-11-18 21:02:43,129 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 320 places, 298 transitions, 1014 flow [2022-11-18 21:02:43,135 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 309 places, 298 transitions, 968 flow, removed 11 selfloop flow, removed 11 redundant places. [2022-11-18 21:02:43,139 INFO L231 Difference]: Finished difference. Result has 312 places, 291 transitions, 831 flow [2022-11-18 21:02:43,140 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=306, PETRI_DIFFERENCE_MINUEND_FLOW=817, PETRI_DIFFERENCE_MINUEND_PLACES=304, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=292, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=287, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=831, PETRI_PLACES=312, PETRI_TRANSITIONS=291} [2022-11-18 21:02:43,141 INFO L288 CegarLoopForPetriNet]: 272 programPoint places, 40 predicate places. [2022-11-18 21:02:43,141 INFO L495 AbstractCegarLoop]: Abstraction has has 312 places, 291 transitions, 831 flow [2022-11-18 21:02:43,141 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 236.33333333333334) internal successors, (1418), 6 states have internal predecessors, (1418), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:02:43,142 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 21:02:43,142 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 21:02:43,142 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-18 21:02:43,142 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)] === [2022-11-18 21:02:43,143 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 21:02:43,143 INFO L85 PathProgramCache]: Analyzing trace with hash -1699045533, now seen corresponding path program 1 times [2022-11-18 21:02:43,143 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 21:02:43,143 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1254699820] [2022-11-18 21:02:43,144 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 21:02:43,144 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 21:02:43,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:02:43,464 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-18 21:02:43,465 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 21:02:43,465 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1254699820] [2022-11-18 21:02:43,465 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1254699820] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 21:02:43,465 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1616067969] [2022-11-18 21:02:43,465 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 21:02:43,466 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 21:02:43,466 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07b09e40-de52-4fa4-97a4-182d8740ee15/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 21:02:43,467 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07b09e40-de52-4fa4-97a4-182d8740ee15/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 21:02:43,495 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07b09e40-de52-4fa4-97a4-182d8740ee15/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-18 21:02:43,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:02:43,639 INFO L263 TraceCheckSpWp]: Trace formula consists of 460 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-18 21:02:43,642 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 21:02:44,224 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-18 21:02:44,225 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 21:02:44,225 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1616067969] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 21:02:44,225 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-18 21:02:44,225 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [10] total 15 [2022-11-18 21:02:44,226 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [391765482] [2022-11-18 21:02:44,226 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 21:02:44,226 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-18 21:02:44,227 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 21:02:44,227 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-18 21:02:44,227 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=164, Unknown=0, NotChecked=0, Total=210 [2022-11-18 21:02:44,229 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 226 out of 306 [2022-11-18 21:02:44,231 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 312 places, 291 transitions, 831 flow. Second operand has 8 states, 8 states have (on average 232.625) internal successors, (1861), 8 states have internal predecessors, (1861), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:02:44,231 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 21:02:44,232 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 226 of 306 [2022-11-18 21:02:44,232 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 21:02:45,384 INFO L130 PetriNetUnfolder]: 891/4368 cut-off events. [2022-11-18 21:02:45,384 INFO L131 PetriNetUnfolder]: For 2048/2086 co-relation queries the response was YES. [2022-11-18 21:02:45,422 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7335 conditions, 4368 events. 891/4368 cut-off events. For 2048/2086 co-relation queries the response was YES. Maximal size of possible extension queue 210. Compared 39568 event pairs, 322 based on Foata normal form. 21/3968 useless extension candidates. Maximal degree in co-relation 7307. Up to 808 conditions per place. [2022-11-18 21:02:45,511 INFO L137 encePairwiseOnDemand]: 294/306 looper letters, 86 selfloop transitions, 8 changer transitions 11/321 dead transitions. [2022-11-18 21:02:45,514 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 317 places, 321 transitions, 1119 flow [2022-11-18 21:02:45,515 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-18 21:02:45,515 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-11-18 21:02:45,520 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 2135 transitions. [2022-11-18 21:02:45,522 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7752360203340596 [2022-11-18 21:02:45,522 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 2135 transitions. [2022-11-18 21:02:45,522 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 2135 transitions. [2022-11-18 21:02:45,524 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 21:02:45,525 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 2135 transitions. [2022-11-18 21:02:45,531 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 237.22222222222223) internal successors, (2135), 9 states have internal predecessors, (2135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:02:45,536 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 306.0) internal successors, (3060), 10 states have internal predecessors, (3060), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:02:45,538 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 306.0) internal successors, (3060), 10 states have internal predecessors, (3060), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:02:45,538 INFO L175 Difference]: Start difference. First operand has 312 places, 291 transitions, 831 flow. Second operand 9 states and 2135 transitions. [2022-11-18 21:02:45,538 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 317 places, 321 transitions, 1119 flow [2022-11-18 21:02:45,546 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 312 places, 321 transitions, 1103 flow, removed 3 selfloop flow, removed 5 redundant places. [2022-11-18 21:02:45,550 INFO L231 Difference]: Finished difference. Result has 314 places, 290 transitions, 831 flow [2022-11-18 21:02:45,551 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=306, PETRI_DIFFERENCE_MINUEND_FLOW=815, PETRI_DIFFERENCE_MINUEND_PLACES=304, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=291, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=283, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=831, PETRI_PLACES=314, PETRI_TRANSITIONS=290} [2022-11-18 21:02:45,551 INFO L288 CegarLoopForPetriNet]: 272 programPoint places, 42 predicate places. [2022-11-18 21:02:45,551 INFO L495 AbstractCegarLoop]: Abstraction has has 314 places, 290 transitions, 831 flow [2022-11-18 21:02:45,552 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 232.625) internal successors, (1861), 8 states have internal predecessors, (1861), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:02:45,552 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 21:02:45,553 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 21:02:45,568 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07b09e40-de52-4fa4-97a4-182d8740ee15/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-18 21:02:45,758 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07b09e40-de52-4fa4-97a4-182d8740ee15/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2022-11-18 21:02:45,759 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)] === [2022-11-18 21:02:45,759 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 21:02:45,759 INFO L85 PathProgramCache]: Analyzing trace with hash 1444574771, now seen corresponding path program 1 times [2022-11-18 21:02:45,759 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 21:02:45,759 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1375102998] [2022-11-18 21:02:45,759 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 21:02:45,759 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 21:02:45,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:02:46,165 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-18 21:02:46,165 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 21:02:46,165 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1375102998] [2022-11-18 21:02:46,165 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1375102998] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 21:02:46,166 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1351261085] [2022-11-18 21:02:46,166 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 21:02:46,166 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 21:02:46,166 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07b09e40-de52-4fa4-97a4-182d8740ee15/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 21:02:46,167 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07b09e40-de52-4fa4-97a4-182d8740ee15/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 21:02:46,187 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07b09e40-de52-4fa4-97a4-182d8740ee15/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-18 21:02:46,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:02:46,342 INFO L263 TraceCheckSpWp]: Trace formula consists of 473 conjuncts, 10 conjunts are in the unsatisfiable core [2022-11-18 21:02:46,346 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 21:02:47,109 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-18 21:02:47,109 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 21:02:48,058 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-18 21:02:48,059 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1351261085] provided 1 perfect and 1 imperfect interpolant sequences [2022-11-18 21:02:48,059 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-11-18 21:02:48,059 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [10, 11] total 25 [2022-11-18 21:02:48,061 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1008689430] [2022-11-18 21:02:48,061 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 21:02:48,062 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-18 21:02:48,062 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 21:02:48,063 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-18 21:02:48,063 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=129, Invalid=471, Unknown=0, NotChecked=0, Total=600 [2022-11-18 21:02:48,066 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 217 out of 306 [2022-11-18 21:02:48,068 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 314 places, 290 transitions, 831 flow. Second operand has 11 states, 11 states have (on average 222.8181818181818) internal successors, (2451), 11 states have internal predecessors, (2451), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:02:48,068 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 21:02:48,068 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 217 of 306 [2022-11-18 21:02:48,069 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 21:02:49,791 INFO L130 PetriNetUnfolder]: 1355/5811 cut-off events. [2022-11-18 21:02:49,792 INFO L131 PetriNetUnfolder]: For 3111/3236 co-relation queries the response was YES. [2022-11-18 21:02:49,836 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10364 conditions, 5811 events. 1355/5811 cut-off events. For 3111/3236 co-relation queries the response was YES. Maximal size of possible extension queue 244. Compared 54551 event pairs, 436 based on Foata normal form. 62/5461 useless extension candidates. Maximal degree in co-relation 10337. Up to 800 conditions per place. [2022-11-18 21:02:49,860 INFO L137 encePairwiseOnDemand]: 290/306 looper letters, 129 selfloop transitions, 13 changer transitions 6/352 dead transitions. [2022-11-18 21:02:49,861 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 325 places, 352 transitions, 1341 flow [2022-11-18 21:02:49,861 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-18 21:02:49,861 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2022-11-18 21:02:49,866 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 3392 transitions. [2022-11-18 21:02:49,869 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7389978213507625 [2022-11-18 21:02:49,869 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 3392 transitions. [2022-11-18 21:02:49,869 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 3392 transitions. [2022-11-18 21:02:49,871 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 21:02:49,872 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 3392 transitions. [2022-11-18 21:02:49,878 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 226.13333333333333) internal successors, (3392), 15 states have internal predecessors, (3392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:02:49,890 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 306.0) internal successors, (4896), 16 states have internal predecessors, (4896), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:02:49,892 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 306.0) internal successors, (4896), 16 states have internal predecessors, (4896), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:02:49,892 INFO L175 Difference]: Start difference. First operand has 314 places, 290 transitions, 831 flow. Second operand 15 states and 3392 transitions. [2022-11-18 21:02:49,892 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 325 places, 352 transitions, 1341 flow [2022-11-18 21:02:49,903 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 317 places, 352 transitions, 1305 flow, removed 12 selfloop flow, removed 8 redundant places. [2022-11-18 21:02:49,909 INFO L231 Difference]: Finished difference. Result has 323 places, 292 transitions, 859 flow [2022-11-18 21:02:49,909 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=306, PETRI_DIFFERENCE_MINUEND_FLOW=811, PETRI_DIFFERENCE_MINUEND_PLACES=303, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=290, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=277, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=859, PETRI_PLACES=323, PETRI_TRANSITIONS=292} [2022-11-18 21:02:49,910 INFO L288 CegarLoopForPetriNet]: 272 programPoint places, 51 predicate places. [2022-11-18 21:02:49,911 INFO L495 AbstractCegarLoop]: Abstraction has has 323 places, 292 transitions, 859 flow [2022-11-18 21:02:49,911 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 222.8181818181818) internal successors, (2451), 11 states have internal predecessors, (2451), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:02:49,912 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 21:02:49,912 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 21:02:49,918 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07b09e40-de52-4fa4-97a4-182d8740ee15/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2022-11-18 21:02:50,118 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07b09e40-de52-4fa4-97a4-182d8740ee15/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2022-11-18 21:02:50,118 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)] === [2022-11-18 21:02:50,119 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 21:02:50,119 INFO L85 PathProgramCache]: Analyzing trace with hash -748075683, now seen corresponding path program 1 times [2022-11-18 21:02:50,119 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 21:02:50,119 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [407170207] [2022-11-18 21:02:50,119 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 21:02:50,119 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 21:02:50,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:02:50,483 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-18 21:02:50,484 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 21:02:50,484 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [407170207] [2022-11-18 21:02:50,484 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [407170207] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 21:02:50,484 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [767834001] [2022-11-18 21:02:50,485 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 21:02:50,485 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 21:02:50,485 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07b09e40-de52-4fa4-97a4-182d8740ee15/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 21:02:50,486 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07b09e40-de52-4fa4-97a4-182d8740ee15/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 21:02:50,511 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07b09e40-de52-4fa4-97a4-182d8740ee15/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-18 21:02:50,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:02:50,670 INFO L263 TraceCheckSpWp]: Trace formula consists of 480 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-18 21:02:50,674 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 21:02:51,353 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-18 21:02:51,354 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 21:02:51,842 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-18 21:02:51,842 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [767834001] provided 1 perfect and 1 imperfect interpolant sequences [2022-11-18 21:02:51,842 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-11-18 21:02:51,842 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [9, 8] total 18 [2022-11-18 21:02:51,844 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [969079356] [2022-11-18 21:02:51,844 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 21:02:51,845 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-18 21:02:51,845 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 21:02:51,846 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-18 21:02:51,846 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=226, Unknown=0, NotChecked=0, Total=306 [2022-11-18 21:02:51,848 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 226 out of 306 [2022-11-18 21:02:51,850 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 323 places, 292 transitions, 859 flow. Second operand has 8 states, 8 states have (on average 232.75) internal successors, (1862), 8 states have internal predecessors, (1862), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:02:51,850 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 21:02:51,850 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 226 of 306 [2022-11-18 21:02:51,850 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 21:02:53,075 INFO L130 PetriNetUnfolder]: 827/4706 cut-off events. [2022-11-18 21:02:53,075 INFO L131 PetriNetUnfolder]: For 2027/2163 co-relation queries the response was YES. [2022-11-18 21:02:53,096 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7869 conditions, 4706 events. 827/4706 cut-off events. For 2027/2163 co-relation queries the response was YES. Maximal size of possible extension queue 197. Compared 43194 event pairs, 320 based on Foata normal form. 96/4450 useless extension candidates. Maximal degree in co-relation 7839. Up to 632 conditions per place. [2022-11-18 21:02:53,112 INFO L137 encePairwiseOnDemand]: 291/306 looper letters, 92 selfloop transitions, 19 changer transitions 0/330 dead transitions. [2022-11-18 21:02:53,112 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 332 places, 330 transitions, 1197 flow [2022-11-18 21:02:53,113 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-18 21:02:53,113 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2022-11-18 21:02:53,118 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 3039 transitions. [2022-11-18 21:02:53,119 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7639517345399698 [2022-11-18 21:02:53,120 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 3039 transitions. [2022-11-18 21:02:53,120 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 3039 transitions. [2022-11-18 21:02:53,122 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 21:02:53,122 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 3039 transitions. [2022-11-18 21:02:53,129 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 233.76923076923077) internal successors, (3039), 13 states have internal predecessors, (3039), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:02:53,136 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 306.0) internal successors, (4284), 14 states have internal predecessors, (4284), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:02:53,138 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 306.0) internal successors, (4284), 14 states have internal predecessors, (4284), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:02:53,139 INFO L175 Difference]: Start difference. First operand has 323 places, 292 transitions, 859 flow. Second operand 13 states and 3039 transitions. [2022-11-18 21:02:53,139 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 332 places, 330 transitions, 1197 flow [2022-11-18 21:02:53,149 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 320 places, 330 transitions, 1163 flow, removed 7 selfloop flow, removed 12 redundant places. [2022-11-18 21:02:53,155 INFO L231 Difference]: Finished difference. Result has 324 places, 299 transitions, 910 flow [2022-11-18 21:02:53,156 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=306, PETRI_DIFFERENCE_MINUEND_FLOW=831, PETRI_DIFFERENCE_MINUEND_PLACES=308, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=292, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=276, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=910, PETRI_PLACES=324, PETRI_TRANSITIONS=299} [2022-11-18 21:02:53,156 INFO L288 CegarLoopForPetriNet]: 272 programPoint places, 52 predicate places. [2022-11-18 21:02:53,157 INFO L495 AbstractCegarLoop]: Abstraction has has 324 places, 299 transitions, 910 flow [2022-11-18 21:02:53,157 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 232.75) internal successors, (1862), 8 states have internal predecessors, (1862), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:02:53,158 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 21:02:53,158 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 21:02:53,169 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07b09e40-de52-4fa4-97a4-182d8740ee15/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-11-18 21:02:53,364 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07b09e40-de52-4fa4-97a4-182d8740ee15/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 21:02:53,364 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)] === [2022-11-18 21:02:53,365 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 21:02:53,365 INFO L85 PathProgramCache]: Analyzing trace with hash -1489885212, now seen corresponding path program 1 times [2022-11-18 21:02:53,365 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 21:02:53,365 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1095125704] [2022-11-18 21:02:53,365 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 21:02:53,366 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 21:02:53,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:02:53,869 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-18 21:02:53,869 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 21:02:53,870 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1095125704] [2022-11-18 21:02:53,870 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1095125704] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 21:02:53,870 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [9812256] [2022-11-18 21:02:53,870 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 21:02:53,871 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 21:02:53,871 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07b09e40-de52-4fa4-97a4-182d8740ee15/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 21:02:53,875 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07b09e40-de52-4fa4-97a4-182d8740ee15/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 21:02:53,879 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07b09e40-de52-4fa4-97a4-182d8740ee15/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-11-18 21:02:54,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:02:54,055 INFO L263 TraceCheckSpWp]: Trace formula consists of 485 conjuncts, 10 conjunts are in the unsatisfiable core [2022-11-18 21:02:54,062 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 21:02:55,005 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-18 21:02:55,006 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 21:02:55,943 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-18 21:02:55,944 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [9812256] provided 1 perfect and 1 imperfect interpolant sequences [2022-11-18 21:02:55,944 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-11-18 21:02:55,944 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [10, 11] total 27 [2022-11-18 21:02:55,944 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [751790477] [2022-11-18 21:02:55,945 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 21:02:55,945 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-18 21:02:55,945 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 21:02:55,946 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-18 21:02:55,946 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=144, Invalid=558, Unknown=0, NotChecked=0, Total=702 [2022-11-18 21:02:55,948 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 217 out of 306 [2022-11-18 21:02:55,951 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 324 places, 299 transitions, 910 flow. Second operand has 11 states, 11 states have (on average 222.9090909090909) internal successors, (2452), 11 states have internal predecessors, (2452), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:02:55,951 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 21:02:55,951 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 217 of 306 [2022-11-18 21:02:55,951 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 21:02:57,366 INFO L130 PetriNetUnfolder]: 1240/6440 cut-off events. [2022-11-18 21:02:57,366 INFO L131 PetriNetUnfolder]: For 4421/4644 co-relation queries the response was YES. [2022-11-18 21:02:57,394 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11879 conditions, 6440 events. 1240/6440 cut-off events. For 4421/4644 co-relation queries the response was YES. Maximal size of possible extension queue 253. Compared 62403 event pairs, 444 based on Foata normal form. 161/6257 useless extension candidates. Maximal degree in co-relation 11850. Up to 956 conditions per place. [2022-11-18 21:02:57,412 INFO L137 encePairwiseOnDemand]: 292/306 looper letters, 143 selfloop transitions, 12 changer transitions 9/370 dead transitions. [2022-11-18 21:02:57,412 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 336 places, 370 transitions, 1518 flow [2022-11-18 21:02:57,412 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-18 21:02:57,413 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2022-11-18 21:02:57,416 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 2956 transitions. [2022-11-18 21:02:57,417 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.743086978381096 [2022-11-18 21:02:57,417 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 2956 transitions. [2022-11-18 21:02:57,418 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 2956 transitions. [2022-11-18 21:02:57,419 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 21:02:57,419 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 2956 transitions. [2022-11-18 21:02:57,425 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 227.3846153846154) internal successors, (2956), 13 states have internal predecessors, (2956), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:02:57,431 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 306.0) internal successors, (4284), 14 states have internal predecessors, (4284), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:02:57,433 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 306.0) internal successors, (4284), 14 states have internal predecessors, (4284), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:02:57,433 INFO L175 Difference]: Start difference. First operand has 324 places, 299 transitions, 910 flow. Second operand 13 states and 2956 transitions. [2022-11-18 21:02:57,433 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 336 places, 370 transitions, 1518 flow [2022-11-18 21:02:57,450 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 330 places, 370 transitions, 1495 flow, removed 2 selfloop flow, removed 6 redundant places. [2022-11-18 21:02:57,455 INFO L231 Difference]: Finished difference. Result has 336 places, 301 transitions, 934 flow [2022-11-18 21:02:57,455 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=306, PETRI_DIFFERENCE_MINUEND_FLOW=887, PETRI_DIFFERENCE_MINUEND_PLACES=318, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=299, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=287, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=934, PETRI_PLACES=336, PETRI_TRANSITIONS=301} [2022-11-18 21:02:57,456 INFO L288 CegarLoopForPetriNet]: 272 programPoint places, 64 predicate places. [2022-11-18 21:02:57,456 INFO L495 AbstractCegarLoop]: Abstraction has has 336 places, 301 transitions, 934 flow [2022-11-18 21:02:57,457 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 222.9090909090909) internal successors, (2452), 11 states have internal predecessors, (2452), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:02:57,457 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 21:02:57,458 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 21:02:57,472 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07b09e40-de52-4fa4-97a4-182d8740ee15/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-11-18 21:02:57,664 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07b09e40-de52-4fa4-97a4-182d8740ee15/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 21:02:57,664 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)] === [2022-11-18 21:02:57,665 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 21:02:57,665 INFO L85 PathProgramCache]: Analyzing trace with hash -1152475043, now seen corresponding path program 1 times [2022-11-18 21:02:57,665 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 21:02:57,665 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [463599310] [2022-11-18 21:02:57,665 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 21:02:57,665 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 21:02:57,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:03:00,456 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-18 21:03:00,456 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 21:03:00,456 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [463599310] [2022-11-18 21:03:00,456 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [463599310] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 21:03:00,456 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [18295691] [2022-11-18 21:03:00,457 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 21:03:00,457 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 21:03:00,457 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07b09e40-de52-4fa4-97a4-182d8740ee15/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 21:03:00,458 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07b09e40-de52-4fa4-97a4-182d8740ee15/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 21:03:00,480 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07b09e40-de52-4fa4-97a4-182d8740ee15/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-11-18 21:03:00,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:03:00,652 INFO L263 TraceCheckSpWp]: Trace formula consists of 493 conjuncts, 53 conjunts are in the unsatisfiable core [2022-11-18 21:03:00,657 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 21:03:02,960 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-11-18 21:03:02,961 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 10 [2022-11-18 21:03:02,991 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-18 21:03:02,991 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 21:03:03,821 INFO L321 Elim1Store]: treesize reduction 26, result has 89.2 percent of original size [2022-11-18 21:03:03,822 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 60 treesize of output 226 [2022-11-18 21:03:06,069 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-18 21:03:06,069 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [18295691] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 21:03:06,070 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 21:03:06,070 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30, 28, 13] total 42 [2022-11-18 21:03:06,070 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [40508052] [2022-11-18 21:03:06,070 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 21:03:06,071 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 42 states [2022-11-18 21:03:06,072 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 21:03:06,072 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2022-11-18 21:03:06,073 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=218, Invalid=1504, Unknown=0, NotChecked=0, Total=1722 [2022-11-18 21:03:06,081 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 191 out of 306 [2022-11-18 21:03:06,088 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 336 places, 301 transitions, 934 flow. Second operand has 42 states, 42 states have (on average 194.73809523809524) internal successors, (8179), 42 states have internal predecessors, (8179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:03:06,088 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 21:03:06,088 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 191 of 306 [2022-11-18 21:03:06,089 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 21:03:53,478 INFO L130 PetriNetUnfolder]: 143364/225609 cut-off events. [2022-11-18 21:03:53,478 INFO L131 PetriNetUnfolder]: For 198424/198424 co-relation queries the response was YES. [2022-11-18 21:03:55,150 INFO L83 FinitePrefix]: Finished finitePrefix Result has 526741 conditions, 225609 events. 143364/225609 cut-off events. For 198424/198424 co-relation queries the response was YES. Maximal size of possible extension queue 6632. Compared 2109900 event pairs, 16552 based on Foata normal form. 0/211222 useless extension candidates. Maximal degree in co-relation 526706. Up to 57569 conditions per place. [2022-11-18 21:03:55,927 INFO L137 encePairwiseOnDemand]: 246/306 looper letters, 1686 selfloop transitions, 514 changer transitions 69/2453 dead transitions. [2022-11-18 21:03:55,927 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 470 places, 2453 transitions, 12248 flow [2022-11-18 21:03:55,928 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 138 states. [2022-11-18 21:03:55,928 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 138 states. [2022-11-18 21:03:55,976 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 138 states to 138 states and 28601 transitions. [2022-11-18 21:03:55,989 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6772994221843327 [2022-11-18 21:03:55,989 INFO L72 ComplementDD]: Start complementDD. Operand 138 states and 28601 transitions. [2022-11-18 21:03:55,989 INFO L73 IsDeterministic]: Start isDeterministic. Operand 138 states and 28601 transitions. [2022-11-18 21:03:56,005 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 21:03:56,005 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 138 states and 28601 transitions. [2022-11-18 21:03:56,090 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 139 states, 138 states have (on average 207.2536231884058) internal successors, (28601), 138 states have internal predecessors, (28601), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:03:56,151 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 139 states, 139 states have (on average 306.0) internal successors, (42534), 139 states have internal predecessors, (42534), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:03:56,162 INFO L81 ComplementDD]: Finished complementDD. Result has 139 states, 139 states have (on average 306.0) internal successors, (42534), 139 states have internal predecessors, (42534), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:03:56,162 INFO L175 Difference]: Start difference. First operand has 336 places, 301 transitions, 934 flow. Second operand 138 states and 28601 transitions. [2022-11-18 21:03:56,162 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 470 places, 2453 transitions, 12248 flow [2022-11-18 21:04:00,558 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 460 places, 2453 transitions, 12203 flow, removed 8 selfloop flow, removed 10 redundant places. [2022-11-18 21:04:00,576 INFO L231 Difference]: Finished difference. Result has 561 places, 822 transitions, 5501 flow [2022-11-18 21:04:00,576 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=306, PETRI_DIFFERENCE_MINUEND_FLOW=910, PETRI_DIFFERENCE_MINUEND_PLACES=323, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=301, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=241, PETRI_DIFFERENCE_SUBTRAHEND_STATES=138, PETRI_FLOW=5501, PETRI_PLACES=561, PETRI_TRANSITIONS=822} [2022-11-18 21:04:00,577 INFO L288 CegarLoopForPetriNet]: 272 programPoint places, 289 predicate places. [2022-11-18 21:04:00,577 INFO L495 AbstractCegarLoop]: Abstraction has has 561 places, 822 transitions, 5501 flow [2022-11-18 21:04:00,578 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 42 states, 42 states have (on average 194.73809523809524) internal successors, (8179), 42 states have internal predecessors, (8179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:04:00,578 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 21:04:00,578 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 21:04:00,584 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07b09e40-de52-4fa4-97a4-182d8740ee15/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2022-11-18 21:04:00,783 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07b09e40-de52-4fa4-97a4-182d8740ee15/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2022-11-18 21:04:00,783 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)] === [2022-11-18 21:04:00,784 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 21:04:00,784 INFO L85 PathProgramCache]: Analyzing trace with hash 1362241847, now seen corresponding path program 2 times [2022-11-18 21:04:00,784 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 21:04:00,784 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1987091016] [2022-11-18 21:04:00,784 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 21:04:00,785 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 21:04:00,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:04:03,480 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-18 21:04:03,481 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 21:04:03,481 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1987091016] [2022-11-18 21:04:03,481 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1987091016] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 21:04:03,481 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 21:04:03,482 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [29] imperfect sequences [] total 29 [2022-11-18 21:04:03,482 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [21414501] [2022-11-18 21:04:03,482 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 21:04:03,483 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2022-11-18 21:04:03,483 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 21:04:03,483 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2022-11-18 21:04:03,484 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=154, Invalid=658, Unknown=0, NotChecked=0, Total=812 [2022-11-18 21:04:03,488 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 191 out of 306 [2022-11-18 21:04:03,492 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 561 places, 822 transitions, 5501 flow. Second operand has 29 states, 29 states have (on average 193.79310344827587) internal successors, (5620), 29 states have internal predecessors, (5620), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:04:03,492 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 21:04:03,492 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 191 of 306 [2022-11-18 21:04:03,492 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand