./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/pthread-wmm/mix037_tso.oepc.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version b5237d83 Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b9995c6-26f3-44d5-b85a-dbf697d6765f/bin/uautomizer-vX5HgA9Q3a/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b9995c6-26f3-44d5-b85a-dbf697d6765f/bin/uautomizer-vX5HgA9Q3a/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b9995c6-26f3-44d5-b85a-dbf697d6765f/bin/uautomizer-vX5HgA9Q3a/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b9995c6-26f3-44d5-b85a-dbf697d6765f/bin/uautomizer-vX5HgA9Q3a/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread-wmm/mix037_tso.oepc.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b9995c6-26f3-44d5-b85a-dbf697d6765f/bin/uautomizer-vX5HgA9Q3a/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b9995c6-26f3-44d5-b85a-dbf697d6765f/bin/uautomizer-vX5HgA9Q3a --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 526eb61a43a151355b0c30c3cdf9498dba5b0f807210313241440694b1deb106 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-b5237d8 [2022-11-21 14:03:46,497 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-21 14:03:46,500 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-21 14:03:46,530 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-21 14:03:46,537 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-21 14:03:46,539 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-21 14:03:46,540 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-21 14:03:46,541 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-21 14:03:46,547 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-21 14:03:46,548 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-21 14:03:46,549 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-21 14:03:46,553 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-21 14:03:46,554 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-21 14:03:46,555 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-21 14:03:46,558 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-21 14:03:46,559 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-21 14:03:46,562 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-21 14:03:46,563 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-21 14:03:46,567 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-21 14:03:46,569 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-21 14:03:46,578 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-21 14:03:46,579 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-21 14:03:46,581 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-21 14:03:46,581 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-21 14:03:46,585 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-21 14:03:46,586 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-21 14:03:46,592 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-21 14:03:46,593 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-21 14:03:46,594 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-21 14:03:46,595 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-21 14:03:46,595 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-21 14:03:46,596 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-21 14:03:46,596 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-21 14:03:46,597 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-21 14:03:46,598 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-21 14:03:46,598 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-21 14:03:46,599 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-21 14:03:46,599 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-21 14:03:46,600 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-21 14:03:46,600 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-21 14:03:46,601 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-21 14:03:46,602 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b9995c6-26f3-44d5-b85a-dbf697d6765f/bin/uautomizer-vX5HgA9Q3a/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-11-21 14:03:46,627 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-21 14:03:46,628 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-21 14:03:46,628 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-21 14:03:46,628 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-21 14:03:46,629 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-21 14:03:46,629 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-21 14:03:46,630 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-21 14:03:46,630 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-21 14:03:46,630 INFO L138 SettingsManager]: * Use SBE=true [2022-11-21 14:03:46,630 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-21 14:03:46,631 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-21 14:03:46,631 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-21 14:03:46,631 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-21 14:03:46,631 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-21 14:03:46,631 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-21 14:03:46,632 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-21 14:03:46,632 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-21 14:03:46,632 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-21 14:03:46,632 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-21 14:03:46,632 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-21 14:03:46,632 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-21 14:03:46,633 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-21 14:03:46,633 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-21 14:03:46,633 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-21 14:03:46,633 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-21 14:03:46,634 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-21 14:03:46,634 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-21 14:03:46,634 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-21 14:03:46,634 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-21 14:03:46,634 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-21 14:03:46,634 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-21 14:03:46,635 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-21 14:03:46,635 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-21 14:03:46,635 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_3b9995c6-26f3-44d5-b85a-dbf697d6765f/bin/uautomizer-vX5HgA9Q3a/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b9995c6-26f3-44d5-b85a-dbf697d6765f/bin/uautomizer-vX5HgA9Q3a Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 526eb61a43a151355b0c30c3cdf9498dba5b0f807210313241440694b1deb106 [2022-11-21 14:03:46,943 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-21 14:03:46,979 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-21 14:03:46,982 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-21 14:03:46,983 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-21 14:03:46,984 INFO L275 PluginConnector]: CDTParser initialized [2022-11-21 14:03:46,985 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b9995c6-26f3-44d5-b85a-dbf697d6765f/bin/uautomizer-vX5HgA9Q3a/../../sv-benchmarks/c/pthread-wmm/mix037_tso.oepc.i [2022-11-21 14:03:50,034 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-21 14:03:50,282 INFO L351 CDTParser]: Found 1 translation units. [2022-11-21 14:03:50,283 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b9995c6-26f3-44d5-b85a-dbf697d6765f/sv-benchmarks/c/pthread-wmm/mix037_tso.oepc.i [2022-11-21 14:03:50,298 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b9995c6-26f3-44d5-b85a-dbf697d6765f/bin/uautomizer-vX5HgA9Q3a/data/f1a71f35c/4e2a9dbb59fa43d1a94485f63f5665d1/FLAG02409923b [2022-11-21 14:03:50,325 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b9995c6-26f3-44d5-b85a-dbf697d6765f/bin/uautomizer-vX5HgA9Q3a/data/f1a71f35c/4e2a9dbb59fa43d1a94485f63f5665d1 [2022-11-21 14:03:50,327 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-21 14:03:50,329 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-21 14:03:50,330 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-21 14:03:50,331 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-21 14:03:50,335 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-21 14:03:50,336 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 02:03:50" (1/1) ... [2022-11-21 14:03:50,337 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@78111ce0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 02:03:50, skipping insertion in model container [2022-11-21 14:03:50,337 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 02:03:50" (1/1) ... [2022-11-21 14:03:50,345 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-21 14:03:50,392 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-21 14:03:50,626 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b9995c6-26f3-44d5-b85a-dbf697d6765f/sv-benchmarks/c/pthread-wmm/mix037_tso.oepc.i[949,962] [2022-11-21 14:03:50,955 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-21 14:03:50,976 INFO L203 MainTranslator]: Completed pre-run [2022-11-21 14:03:50,992 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b9995c6-26f3-44d5-b85a-dbf697d6765f/sv-benchmarks/c/pthread-wmm/mix037_tso.oepc.i[949,962] [2022-11-21 14:03:51,086 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-21 14:03:51,132 INFO L208 MainTranslator]: Completed translation [2022-11-21 14:03:51,132 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 02:03:51 WrapperNode [2022-11-21 14:03:51,133 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-21 14:03:51,134 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-21 14:03:51,134 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-21 14:03:51,134 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-21 14:03:51,141 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 02:03:51" (1/1) ... [2022-11-21 14:03:51,171 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 02:03:51" (1/1) ... [2022-11-21 14:03:51,218 INFO L138 Inliner]: procedures = 177, calls = 71, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 161 [2022-11-21 14:03:51,219 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-21 14:03:51,219 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-21 14:03:51,219 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-21 14:03:51,220 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-21 14:03:51,228 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 02:03:51" (1/1) ... [2022-11-21 14:03:51,229 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 02:03:51" (1/1) ... [2022-11-21 14:03:51,244 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 02:03:51" (1/1) ... [2022-11-21 14:03:51,247 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 02:03:51" (1/1) ... [2022-11-21 14:03:51,259 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 02:03:51" (1/1) ... [2022-11-21 14:03:51,270 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 02:03:51" (1/1) ... [2022-11-21 14:03:51,272 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 02:03:51" (1/1) ... [2022-11-21 14:03:51,274 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 02:03:51" (1/1) ... [2022-11-21 14:03:51,277 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-21 14:03:51,282 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-21 14:03:51,282 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-21 14:03:51,283 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-21 14:03:51,283 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 02:03:51" (1/1) ... [2022-11-21 14:03:51,289 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-21 14:03:51,301 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b9995c6-26f3-44d5-b85a-dbf697d6765f/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 14:03:51,318 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b9995c6-26f3-44d5-b85a-dbf697d6765f/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-21 14:03:51,349 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b9995c6-26f3-44d5-b85a-dbf697d6765f/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-21 14:03:51,368 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-21 14:03:51,368 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-11-21 14:03:51,368 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-21 14:03:51,369 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-21 14:03:51,369 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-21 14:03:51,370 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2022-11-21 14:03:51,370 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2022-11-21 14:03:51,370 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2022-11-21 14:03:51,371 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2022-11-21 14:03:51,371 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2022-11-21 14:03:51,371 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2022-11-21 14:03:51,371 INFO L130 BoogieDeclarations]: Found specification of procedure P3 [2022-11-21 14:03:51,371 INFO L138 BoogieDeclarations]: Found implementation of procedure P3 [2022-11-21 14:03:51,371 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-21 14:03:51,372 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-11-21 14:03:51,372 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-21 14:03:51,372 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-21 14:03:51,374 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-21 14:03:51,519 INFO L235 CfgBuilder]: Building ICFG [2022-11-21 14:03:51,521 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-21 14:03:52,021 INFO L276 CfgBuilder]: Performing block encoding [2022-11-21 14:03:52,231 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-21 14:03:52,231 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-11-21 14:03:52,234 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 02:03:52 BoogieIcfgContainer [2022-11-21 14:03:52,235 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-21 14:03:52,238 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-21 14:03:52,238 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-21 14:03:52,242 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-21 14:03:52,242 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.11 02:03:50" (1/3) ... [2022-11-21 14:03:52,243 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@36329fed and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 02:03:52, skipping insertion in model container [2022-11-21 14:03:52,243 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 02:03:51" (2/3) ... [2022-11-21 14:03:52,245 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@36329fed and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 02:03:52, skipping insertion in model container [2022-11-21 14:03:52,245 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 02:03:52" (3/3) ... [2022-11-21 14:03:52,249 INFO L112 eAbstractionObserver]: Analyzing ICFG mix037_tso.oepc.i [2022-11-21 14:03:52,259 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-21 14:03:52,270 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-21 14:03:52,270 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-11-21 14:03:52,271 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-21 14:03:52,361 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-11-21 14:03:52,412 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 151 places, 140 transitions, 300 flow [2022-11-21 14:03:52,516 INFO L130 PetriNetUnfolder]: 2/136 cut-off events. [2022-11-21 14:03:52,517 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-21 14:03:52,523 INFO L83 FinitePrefix]: Finished finitePrefix Result has 149 conditions, 136 events. 2/136 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 74 event pairs, 0 based on Foata normal form. 0/132 useless extension candidates. Maximal degree in co-relation 93. Up to 2 conditions per place. [2022-11-21 14:03:52,523 INFO L82 GeneralOperation]: Start removeDead. Operand has 151 places, 140 transitions, 300 flow [2022-11-21 14:03:52,532 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 147 places, 136 transitions, 284 flow [2022-11-21 14:03:52,550 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-21 14:03:52,557 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;@54bc4bef, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-21 14:03:52,558 INFO L358 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2022-11-21 14:03:52,610 INFO L130 PetriNetUnfolder]: 0/65 cut-off events. [2022-11-21 14:03:52,611 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-21 14:03:52,611 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 14:03:52,612 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] [2022-11-21 14:03:52,613 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting P1Err0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-11-21 14:03:52,620 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 14:03:52,620 INFO L85 PathProgramCache]: Analyzing trace with hash 585902427, now seen corresponding path program 1 times [2022-11-21 14:03:52,630 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 14:03:52,630 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [802174840] [2022-11-21 14:03:52,631 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 14:03:52,632 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 14:03:52,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:03:53,261 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 14:03:53,262 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 14:03:53,262 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [802174840] [2022-11-21 14:03:53,263 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [802174840] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 14:03:53,263 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 14:03:53,263 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-21 14:03:53,265 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [787666763] [2022-11-21 14:03:53,266 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 14:03:53,275 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-21 14:03:53,275 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 14:03:53,304 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-21 14:03:53,306 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-21 14:03:53,309 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 124 out of 140 [2022-11-21 14:03:53,312 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 147 places, 136 transitions, 284 flow. Second operand has 3 states, 3 states have (on average 125.33333333333333) internal successors, (376), 3 states have internal predecessors, (376), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 14:03:53,312 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 14:03:53,312 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 124 of 140 [2022-11-21 14:03:53,314 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 14:03:53,705 INFO L130 PetriNetUnfolder]: 161/1036 cut-off events. [2022-11-21 14:03:53,705 INFO L131 PetriNetUnfolder]: For 21/21 co-relation queries the response was YES. [2022-11-21 14:03:53,716 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1338 conditions, 1036 events. 161/1036 cut-off events. For 21/21 co-relation queries the response was YES. Maximal size of possible extension queue 44. Compared 7023 event pairs, 103 based on Foata normal form. 34/1009 useless extension candidates. Maximal degree in co-relation 1279. Up to 187 conditions per place. [2022-11-21 14:03:53,723 INFO L137 encePairwiseOnDemand]: 135/140 looper letters, 17 selfloop transitions, 2 changer transitions 0/139 dead transitions. [2022-11-21 14:03:53,723 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 147 places, 139 transitions, 334 flow [2022-11-21 14:03:53,724 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-21 14:03:53,727 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-21 14:03:53,740 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 396 transitions. [2022-11-21 14:03:53,745 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9428571428571428 [2022-11-21 14:03:53,746 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 396 transitions. [2022-11-21 14:03:53,746 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 396 transitions. [2022-11-21 14:03:53,751 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 14:03:53,753 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 396 transitions. [2022-11-21 14:03:53,759 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 132.0) internal successors, (396), 3 states have internal predecessors, (396), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 14:03:53,769 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 140.0) internal successors, (560), 4 states have internal predecessors, (560), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 14:03:53,770 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 140.0) internal successors, (560), 4 states have internal predecessors, (560), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 14:03:53,772 INFO L175 Difference]: Start difference. First operand has 147 places, 136 transitions, 284 flow. Second operand 3 states and 396 transitions. [2022-11-21 14:03:53,773 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 147 places, 139 transitions, 334 flow [2022-11-21 14:03:53,777 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 143 places, 139 transitions, 328 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-11-21 14:03:53,782 INFO L231 Difference]: Finished difference. Result has 143 places, 132 transitions, 276 flow [2022-11-21 14:03:53,784 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=140, PETRI_DIFFERENCE_MINUEND_FLOW=272, PETRI_DIFFERENCE_MINUEND_PLACES=141, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=132, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=130, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=276, PETRI_PLACES=143, PETRI_TRANSITIONS=132} [2022-11-21 14:03:53,790 INFO L288 CegarLoopForPetriNet]: 147 programPoint places, -4 predicate places. [2022-11-21 14:03:53,791 INFO L495 AbstractCegarLoop]: Abstraction has has 143 places, 132 transitions, 276 flow [2022-11-21 14:03:53,791 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 125.33333333333333) internal successors, (376), 3 states have internal predecessors, (376), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 14:03:53,792 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 14:03:53,792 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] [2022-11-21 14:03:53,792 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-21 14:03:53,793 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-11-21 14:03:53,793 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 14:03:53,793 INFO L85 PathProgramCache]: Analyzing trace with hash 1125125309, now seen corresponding path program 1 times [2022-11-21 14:03:53,793 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 14:03:53,794 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [735922491] [2022-11-21 14:03:53,794 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 14:03:53,794 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 14:03:53,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:03:55,294 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 14:03:55,294 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 14:03:55,295 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [735922491] [2022-11-21 14:03:55,296 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [735922491] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 14:03:55,299 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 14:03:55,299 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-21 14:03:55,300 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1881572265] [2022-11-21 14:03:55,300 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 14:03:55,301 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-21 14:03:55,302 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 14:03:55,303 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-21 14:03:55,304 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2022-11-21 14:03:55,307 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 105 out of 140 [2022-11-21 14:03:55,315 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 143 places, 132 transitions, 276 flow. Second operand has 10 states, 10 states have (on average 107.0) internal successors, (1070), 10 states have internal predecessors, (1070), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 14:03:55,315 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 14:03:55,315 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 105 of 140 [2022-11-21 14:03:55,316 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 14:03:58,572 INFO L130 PetriNetUnfolder]: 5385/12489 cut-off events. [2022-11-21 14:03:58,573 INFO L131 PetriNetUnfolder]: For 481/481 co-relation queries the response was YES. [2022-11-21 14:03:58,622 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20503 conditions, 12489 events. 5385/12489 cut-off events. For 481/481 co-relation queries the response was YES. Maximal size of possible extension queue 620. Compared 119255 event pairs, 1677 based on Foata normal form. 0/12197 useless extension candidates. Maximal degree in co-relation 20437. Up to 4120 conditions per place. [2022-11-21 14:03:58,661 INFO L137 encePairwiseOnDemand]: 122/140 looper letters, 45 selfloop transitions, 19 changer transitions 128/280 dead transitions. [2022-11-21 14:03:58,661 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 161 places, 280 transitions, 968 flow [2022-11-21 14:03:58,662 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-11-21 14:03:58,662 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2022-11-21 14:03:58,666 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 2178 transitions. [2022-11-21 14:03:58,667 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.818796992481203 [2022-11-21 14:03:58,667 INFO L72 ComplementDD]: Start complementDD. Operand 19 states and 2178 transitions. [2022-11-21 14:03:58,667 INFO L73 IsDeterministic]: Start isDeterministic. Operand 19 states and 2178 transitions. [2022-11-21 14:03:58,669 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 14:03:58,669 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 19 states and 2178 transitions. [2022-11-21 14:03:58,674 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 20 states, 19 states have (on average 114.63157894736842) internal successors, (2178), 19 states have internal predecessors, (2178), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 14:03:58,681 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 20 states, 20 states have (on average 140.0) internal successors, (2800), 20 states have internal predecessors, (2800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 14:03:58,683 INFO L81 ComplementDD]: Finished complementDD. Result has 20 states, 20 states have (on average 140.0) internal successors, (2800), 20 states have internal predecessors, (2800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 14:03:58,683 INFO L175 Difference]: Start difference. First operand has 143 places, 132 transitions, 276 flow. Second operand 19 states and 2178 transitions. [2022-11-21 14:03:58,683 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 161 places, 280 transitions, 968 flow [2022-11-21 14:03:58,689 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 159 places, 280 transitions, 942 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-21 14:03:58,693 INFO L231 Difference]: Finished difference. Result has 174 places, 133 transitions, 440 flow [2022-11-21 14:03:58,693 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=140, PETRI_DIFFERENCE_MINUEND_FLOW=272, PETRI_DIFFERENCE_MINUEND_PLACES=141, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=132, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=117, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=440, PETRI_PLACES=174, PETRI_TRANSITIONS=133} [2022-11-21 14:03:58,694 INFO L288 CegarLoopForPetriNet]: 147 programPoint places, 27 predicate places. [2022-11-21 14:03:58,694 INFO L495 AbstractCegarLoop]: Abstraction has has 174 places, 133 transitions, 440 flow [2022-11-21 14:03:58,695 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 107.0) internal successors, (1070), 10 states have internal predecessors, (1070), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 14:03:58,695 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 14:03:58,696 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] [2022-11-21 14:03:58,696 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-21 14:03:58,696 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-11-21 14:03:58,697 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 14:03:58,697 INFO L85 PathProgramCache]: Analyzing trace with hash 1886826555, now seen corresponding path program 1 times [2022-11-21 14:03:58,697 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 14:03:58,698 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1378470547] [2022-11-21 14:03:58,698 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 14:03:58,699 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 14:03:58,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:03:59,418 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 14:03:59,419 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 14:03:59,419 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1378470547] [2022-11-21 14:03:59,419 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1378470547] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 14:03:59,419 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 14:03:59,420 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-21 14:03:59,420 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [206762255] [2022-11-21 14:03:59,420 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 14:03:59,420 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-21 14:03:59,421 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 14:03:59,421 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-21 14:03:59,421 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-11-21 14:03:59,422 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 103 out of 140 [2022-11-21 14:03:59,423 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 174 places, 133 transitions, 440 flow. Second operand has 7 states, 7 states have (on average 106.28571428571429) internal successors, (744), 7 states have internal predecessors, (744), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 14:03:59,423 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 14:03:59,423 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 103 of 140 [2022-11-21 14:03:59,423 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 14:04:01,327 INFO L130 PetriNetUnfolder]: 3602/5837 cut-off events. [2022-11-21 14:04:01,327 INFO L131 PetriNetUnfolder]: For 31909/32978 co-relation queries the response was YES. [2022-11-21 14:04:01,357 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28697 conditions, 5837 events. 3602/5837 cut-off events. For 31909/32978 co-relation queries the response was YES. Maximal size of possible extension queue 352. Compared 36934 event pairs, 470 based on Foata normal form. 128/5872 useless extension candidates. Maximal degree in co-relation 28610. Up to 2804 conditions per place. [2022-11-21 14:04:01,400 INFO L137 encePairwiseOnDemand]: 134/140 looper letters, 62 selfloop transitions, 3 changer transitions 59/210 dead transitions. [2022-11-21 14:04:01,400 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 156 places, 210 transitions, 1321 flow [2022-11-21 14:04:01,401 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-21 14:04:01,401 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-11-21 14:04:01,403 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1027 transitions. [2022-11-21 14:04:01,403 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8150793650793651 [2022-11-21 14:04:01,404 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1027 transitions. [2022-11-21 14:04:01,404 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1027 transitions. [2022-11-21 14:04:01,404 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 14:04:01,404 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1027 transitions. [2022-11-21 14:04:01,407 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 114.11111111111111) internal successors, (1027), 9 states have internal predecessors, (1027), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 14:04:01,409 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 140.0) internal successors, (1400), 10 states have internal predecessors, (1400), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 14:04:01,410 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 140.0) internal successors, (1400), 10 states have internal predecessors, (1400), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 14:04:01,410 INFO L175 Difference]: Start difference. First operand has 174 places, 133 transitions, 440 flow. Second operand 9 states and 1027 transitions. [2022-11-21 14:04:01,410 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 156 places, 210 transitions, 1321 flow [2022-11-21 14:04:01,603 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 148 places, 210 transitions, 1289 flow, removed 14 selfloop flow, removed 8 redundant places. [2022-11-21 14:04:01,607 INFO L231 Difference]: Finished difference. Result has 155 places, 133 transitions, 449 flow [2022-11-21 14:04:01,608 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=140, PETRI_DIFFERENCE_MINUEND_FLOW=424, PETRI_DIFFERENCE_MINUEND_PLACES=140, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=133, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=130, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=449, PETRI_PLACES=155, PETRI_TRANSITIONS=133} [2022-11-21 14:04:01,609 INFO L288 CegarLoopForPetriNet]: 147 programPoint places, 8 predicate places. [2022-11-21 14:04:01,609 INFO L495 AbstractCegarLoop]: Abstraction has has 155 places, 133 transitions, 449 flow [2022-11-21 14:04:01,611 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 106.28571428571429) internal successors, (744), 7 states have internal predecessors, (744), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 14:04:01,611 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 14:04:01,611 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] [2022-11-21 14:04:01,612 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-21 14:04:01,612 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-11-21 14:04:01,613 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 14:04:01,613 INFO L85 PathProgramCache]: Analyzing trace with hash -1019656409, now seen corresponding path program 1 times [2022-11-21 14:04:01,613 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 14:04:01,614 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [426645293] [2022-11-21 14:04:01,614 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 14:04:01,614 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 14:04:01,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:04:02,539 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 14:04:02,540 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 14:04:02,540 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [426645293] [2022-11-21 14:04:02,540 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [426645293] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 14:04:02,540 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 14:04:02,541 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-21 14:04:02,541 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [342931275] [2022-11-21 14:04:02,541 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 14:04:02,541 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-21 14:04:02,542 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 14:04:02,542 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-21 14:04:02,542 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2022-11-21 14:04:02,543 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 113 out of 140 [2022-11-21 14:04:02,544 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 155 places, 133 transitions, 449 flow. Second operand has 10 states, 10 states have (on average 114.7) internal successors, (1147), 10 states have internal predecessors, (1147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 14:04:02,545 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 14:04:02,545 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 113 of 140 [2022-11-21 14:04:02,545 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 14:04:03,741 INFO L130 PetriNetUnfolder]: 1770/3483 cut-off events. [2022-11-21 14:04:03,741 INFO L131 PetriNetUnfolder]: For 19513/21342 co-relation queries the response was YES. [2022-11-21 14:04:03,759 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16626 conditions, 3483 events. 1770/3483 cut-off events. For 19513/21342 co-relation queries the response was YES. Maximal size of possible extension queue 216. Compared 24136 event pairs, 836 based on Foata normal form. 79/3280 useless extension candidates. Maximal degree in co-relation 16544. Up to 1562 conditions per place. [2022-11-21 14:04:03,785 INFO L137 encePairwiseOnDemand]: 126/140 looper letters, 33 selfloop transitions, 20 changer transitions 27/179 dead transitions. [2022-11-21 14:04:03,785 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 162 places, 179 transitions, 1103 flow [2022-11-21 14:04:03,786 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-21 14:04:03,786 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2022-11-21 14:04:03,790 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 1655 transitions. [2022-11-21 14:04:03,791 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8443877551020408 [2022-11-21 14:04:03,792 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 1655 transitions. [2022-11-21 14:04:03,796 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 1655 transitions. [2022-11-21 14:04:03,797 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 14:04:03,797 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 1655 transitions. [2022-11-21 14:04:03,802 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 118.21428571428571) internal successors, (1655), 14 states have internal predecessors, (1655), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 14:04:03,806 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 140.0) internal successors, (2100), 15 states have internal predecessors, (2100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 14:04:03,807 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 140.0) internal successors, (2100), 15 states have internal predecessors, (2100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 14:04:03,807 INFO L175 Difference]: Start difference. First operand has 155 places, 133 transitions, 449 flow. Second operand 14 states and 1655 transitions. [2022-11-21 14:04:03,808 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 162 places, 179 transitions, 1103 flow [2022-11-21 14:04:03,861 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 154 places, 179 transitions, 1069 flow, removed 14 selfloop flow, removed 8 redundant places. [2022-11-21 14:04:03,869 INFO L231 Difference]: Finished difference. Result has 161 places, 141 transitions, 628 flow [2022-11-21 14:04:03,870 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=140, PETRI_DIFFERENCE_MINUEND_FLOW=431, PETRI_DIFFERENCE_MINUEND_PLACES=141, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=133, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=116, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=628, PETRI_PLACES=161, PETRI_TRANSITIONS=141} [2022-11-21 14:04:03,871 INFO L288 CegarLoopForPetriNet]: 147 programPoint places, 14 predicate places. [2022-11-21 14:04:03,872 INFO L495 AbstractCegarLoop]: Abstraction has has 161 places, 141 transitions, 628 flow [2022-11-21 14:04:03,872 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 114.7) internal successors, (1147), 10 states have internal predecessors, (1147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 14:04:03,873 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 14:04:03,873 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] [2022-11-21 14:04:03,873 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-21 14:04:03,873 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-11-21 14:04:03,874 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 14:04:03,874 INFO L85 PathProgramCache]: Analyzing trace with hash -569083211, now seen corresponding path program 1 times [2022-11-21 14:04:03,874 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 14:04:03,875 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1471678236] [2022-11-21 14:04:03,876 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 14:04:03,876 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 14:04:03,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:04:05,117 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 14:04:05,117 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 14:04:05,117 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1471678236] [2022-11-21 14:04:05,117 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1471678236] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 14:04:05,117 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 14:04:05,118 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-11-21 14:04:05,118 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1434975563] [2022-11-21 14:04:05,118 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 14:04:05,118 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-21 14:04:05,118 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 14:04:05,119 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-21 14:04:05,119 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2022-11-21 14:04:05,120 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 103 out of 140 [2022-11-21 14:04:05,121 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 161 places, 141 transitions, 628 flow. Second operand has 12 states, 12 states have (on average 105.0) internal successors, (1260), 12 states have internal predecessors, (1260), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 14:04:05,121 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 14:04:05,122 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 103 of 140 [2022-11-21 14:04:05,122 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 14:04:07,590 INFO L130 PetriNetUnfolder]: 4196/7129 cut-off events. [2022-11-21 14:04:07,591 INFO L131 PetriNetUnfolder]: For 79000/80783 co-relation queries the response was YES. [2022-11-21 14:04:07,630 INFO L83 FinitePrefix]: Finished finitePrefix Result has 42489 conditions, 7129 events. 4196/7129 cut-off events. For 79000/80783 co-relation queries the response was YES. Maximal size of possible extension queue 389. Compared 47974 event pairs, 615 based on Foata normal form. 141/7084 useless extension candidates. Maximal degree in co-relation 42396. Up to 3223 conditions per place. [2022-11-21 14:04:07,677 INFO L137 encePairwiseOnDemand]: 120/140 looper letters, 69 selfloop transitions, 25 changer transitions 101/281 dead transitions. [2022-11-21 14:04:07,677 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 178 places, 281 transitions, 2804 flow [2022-11-21 14:04:07,678 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-11-21 14:04:07,678 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2022-11-21 14:04:07,682 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 2444 transitions. [2022-11-21 14:04:07,683 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7935064935064935 [2022-11-21 14:04:07,683 INFO L72 ComplementDD]: Start complementDD. Operand 22 states and 2444 transitions. [2022-11-21 14:04:07,683 INFO L73 IsDeterministic]: Start isDeterministic. Operand 22 states and 2444 transitions. [2022-11-21 14:04:07,685 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 14:04:07,685 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 22 states and 2444 transitions. [2022-11-21 14:04:07,690 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 23 states, 22 states have (on average 111.0909090909091) internal successors, (2444), 22 states have internal predecessors, (2444), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 14:04:07,696 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 23 states, 23 states have (on average 140.0) internal successors, (3220), 23 states have internal predecessors, (3220), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 14:04:07,697 INFO L81 ComplementDD]: Finished complementDD. Result has 23 states, 23 states have (on average 140.0) internal successors, (3220), 23 states have internal predecessors, (3220), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 14:04:07,698 INFO L175 Difference]: Start difference. First operand has 161 places, 141 transitions, 628 flow. Second operand 22 states and 2444 transitions. [2022-11-21 14:04:07,698 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 178 places, 281 transitions, 2804 flow [2022-11-21 14:04:07,771 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 170 places, 281 transitions, 2729 flow, removed 27 selfloop flow, removed 8 redundant places. [2022-11-21 14:04:07,775 INFO L231 Difference]: Finished difference. Result has 185 places, 148 transitions, 885 flow [2022-11-21 14:04:07,776 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=140, PETRI_DIFFERENCE_MINUEND_FLOW=565, PETRI_DIFFERENCE_MINUEND_PLACES=149, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=141, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=120, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=885, PETRI_PLACES=185, PETRI_TRANSITIONS=148} [2022-11-21 14:04:07,779 INFO L288 CegarLoopForPetriNet]: 147 programPoint places, 38 predicate places. [2022-11-21 14:04:07,779 INFO L495 AbstractCegarLoop]: Abstraction has has 185 places, 148 transitions, 885 flow [2022-11-21 14:04:07,780 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 105.0) internal successors, (1260), 12 states have internal predecessors, (1260), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 14:04:07,780 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 14:04:07,780 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] [2022-11-21 14:04:07,780 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-21 14:04:07,781 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-11-21 14:04:07,782 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 14:04:07,782 INFO L85 PathProgramCache]: Analyzing trace with hash 350538908, now seen corresponding path program 1 times [2022-11-21 14:04:07,782 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 14:04:07,782 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [911514470] [2022-11-21 14:04:07,782 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 14:04:07,783 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 14:04:07,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:04:08,104 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 14:04:08,104 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 14:04:08,104 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [911514470] [2022-11-21 14:04:08,105 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [911514470] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 14:04:08,105 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 14:04:08,105 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-21 14:04:08,105 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1191402687] [2022-11-21 14:04:08,106 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 14:04:08,106 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-21 14:04:08,106 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 14:04:08,107 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-21 14:04:08,107 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-21 14:04:08,108 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 113 out of 140 [2022-11-21 14:04:08,109 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 185 places, 148 transitions, 885 flow. Second operand has 6 states, 6 states have (on average 115.5) internal successors, (693), 6 states have internal predecessors, (693), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 14:04:08,109 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 14:04:08,109 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 113 of 140 [2022-11-21 14:04:08,109 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 14:04:13,333 INFO L130 PetriNetUnfolder]: 14586/23052 cut-off events. [2022-11-21 14:04:13,334 INFO L131 PetriNetUnfolder]: For 938084/985570 co-relation queries the response was YES. [2022-11-21 14:04:13,489 INFO L83 FinitePrefix]: Finished finitePrefix Result has 178312 conditions, 23052 events. 14586/23052 cut-off events. For 938084/985570 co-relation queries the response was YES. Maximal size of possible extension queue 1395. Compared 177037 event pairs, 1491 based on Foata normal form. 1032/21968 useless extension candidates. Maximal degree in co-relation 178215. Up to 8194 conditions per place. [2022-11-21 14:04:13,712 INFO L137 encePairwiseOnDemand]: 129/140 looper letters, 210 selfloop transitions, 20 changer transitions 0/335 dead transitions. [2022-11-21 14:04:13,713 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 180 places, 335 transitions, 4070 flow [2022-11-21 14:04:13,716 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-21 14:04:13,717 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-11-21 14:04:13,719 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1230 transitions. [2022-11-21 14:04:13,719 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8785714285714286 [2022-11-21 14:04:13,728 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1230 transitions. [2022-11-21 14:04:13,729 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1230 transitions. [2022-11-21 14:04:13,730 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 14:04:13,730 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1230 transitions. [2022-11-21 14:04:13,732 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 123.0) internal successors, (1230), 10 states have internal predecessors, (1230), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 14:04:13,735 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 140.0) internal successors, (1540), 11 states have internal predecessors, (1540), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 14:04:13,735 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 140.0) internal successors, (1540), 11 states have internal predecessors, (1540), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 14:04:13,736 INFO L175 Difference]: Start difference. First operand has 185 places, 148 transitions, 885 flow. Second operand 10 states and 1230 transitions. [2022-11-21 14:04:13,736 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 180 places, 335 transitions, 4070 flow [2022-11-21 14:04:14,736 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 162 places, 335 transitions, 3155 flow, removed 448 selfloop flow, removed 18 redundant places. [2022-11-21 14:04:14,741 INFO L231 Difference]: Finished difference. Result has 168 places, 166 transitions, 876 flow [2022-11-21 14:04:14,742 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=140, PETRI_DIFFERENCE_MINUEND_FLOW=733, PETRI_DIFFERENCE_MINUEND_PLACES=153, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=148, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=138, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=876, PETRI_PLACES=168, PETRI_TRANSITIONS=166} [2022-11-21 14:04:14,742 INFO L288 CegarLoopForPetriNet]: 147 programPoint places, 21 predicate places. [2022-11-21 14:04:14,743 INFO L495 AbstractCegarLoop]: Abstraction has has 168 places, 166 transitions, 876 flow [2022-11-21 14:04:14,743 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 115.5) internal successors, (693), 6 states have internal predecessors, (693), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 14:04:14,743 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 14:04:14,744 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] [2022-11-21 14:04:14,744 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-21 14:04:14,744 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-11-21 14:04:14,745 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 14:04:14,745 INFO L85 PathProgramCache]: Analyzing trace with hash 2033292165, now seen corresponding path program 1 times [2022-11-21 14:04:14,745 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 14:04:14,745 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1312436750] [2022-11-21 14:04:14,746 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 14:04:14,746 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 14:04:14,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:04:15,122 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 14:04:15,122 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 14:04:15,122 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1312436750] [2022-11-21 14:04:15,123 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1312436750] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 14:04:15,123 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 14:04:15,123 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-21 14:04:15,127 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [522290874] [2022-11-21 14:04:15,128 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 14:04:15,128 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-21 14:04:15,128 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 14:04:15,129 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-21 14:04:15,129 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-11-21 14:04:15,130 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 113 out of 140 [2022-11-21 14:04:15,131 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 168 places, 166 transitions, 876 flow. Second operand has 7 states, 7 states have (on average 115.28571428571429) internal successors, (807), 7 states have internal predecessors, (807), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 14:04:15,132 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 14:04:15,132 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 113 of 140 [2022-11-21 14:04:15,132 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 14:04:19,766 INFO L130 PetriNetUnfolder]: 13007/21411 cut-off events. [2022-11-21 14:04:19,766 INFO L131 PetriNetUnfolder]: For 447871/493322 co-relation queries the response was YES. [2022-11-21 14:04:19,875 INFO L83 FinitePrefix]: Finished finitePrefix Result has 136575 conditions, 21411 events. 13007/21411 cut-off events. For 447871/493322 co-relation queries the response was YES. Maximal size of possible extension queue 1405. Compared 174254 event pairs, 1043 based on Foata normal form. 1387/21145 useless extension candidates. Maximal degree in co-relation 136488. Up to 6709 conditions per place. [2022-11-21 14:04:20,015 INFO L137 encePairwiseOnDemand]: 129/140 looper letters, 243 selfloop transitions, 38 changer transitions 15/401 dead transitions. [2022-11-21 14:04:20,015 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 180 places, 401 transitions, 4300 flow [2022-11-21 14:04:20,016 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-21 14:04:20,016 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2022-11-21 14:04:20,019 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1603 transitions. [2022-11-21 14:04:20,020 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8807692307692307 [2022-11-21 14:04:20,020 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 1603 transitions. [2022-11-21 14:04:20,020 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 1603 transitions. [2022-11-21 14:04:20,021 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 14:04:20,021 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 1603 transitions. [2022-11-21 14:04:20,025 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 123.3076923076923) internal successors, (1603), 13 states have internal predecessors, (1603), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 14:04:20,028 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 140.0) internal successors, (1960), 14 states have internal predecessors, (1960), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 14:04:20,029 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 140.0) internal successors, (1960), 14 states have internal predecessors, (1960), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 14:04:20,030 INFO L175 Difference]: Start difference. First operand has 168 places, 166 transitions, 876 flow. Second operand 13 states and 1603 transitions. [2022-11-21 14:04:20,030 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 180 places, 401 transitions, 4300 flow [2022-11-21 14:04:20,367 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 179 places, 401 transitions, 4298 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-21 14:04:20,372 INFO L231 Difference]: Finished difference. Result has 185 places, 184 transitions, 1139 flow [2022-11-21 14:04:20,373 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=140, PETRI_DIFFERENCE_MINUEND_FLOW=846, PETRI_DIFFERENCE_MINUEND_PLACES=167, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=164, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=138, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=1139, PETRI_PLACES=185, PETRI_TRANSITIONS=184} [2022-11-21 14:04:20,374 INFO L288 CegarLoopForPetriNet]: 147 programPoint places, 38 predicate places. [2022-11-21 14:04:20,375 INFO L495 AbstractCegarLoop]: Abstraction has has 185 places, 184 transitions, 1139 flow [2022-11-21 14:04:20,375 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 115.28571428571429) internal successors, (807), 7 states have internal predecessors, (807), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 14:04:20,375 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 14:04:20,376 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] [2022-11-21 14:04:20,376 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-21 14:04:20,376 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-11-21 14:04:20,377 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 14:04:20,377 INFO L85 PathProgramCache]: Analyzing trace with hash -1333722937, now seen corresponding path program 1 times [2022-11-21 14:04:20,377 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 14:04:20,377 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1873554146] [2022-11-21 14:04:20,378 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 14:04:20,378 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 14:04:20,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:04:20,725 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 14:04:20,726 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 14:04:20,726 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1873554146] [2022-11-21 14:04:20,726 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1873554146] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 14:04:20,726 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 14:04:20,726 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-21 14:04:20,727 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1718394452] [2022-11-21 14:04:20,727 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 14:04:20,728 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-21 14:04:20,728 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 14:04:20,728 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-21 14:04:20,729 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-11-21 14:04:20,730 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 113 out of 140 [2022-11-21 14:04:20,731 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 185 places, 184 transitions, 1139 flow. Second operand has 8 states, 8 states have (on average 115.25) internal successors, (922), 8 states have internal predecessors, (922), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 14:04:20,731 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 14:04:20,731 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 113 of 140 [2022-11-21 14:04:20,731 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 14:04:25,462 INFO L130 PetriNetUnfolder]: 12379/20505 cut-off events. [2022-11-21 14:04:25,462 INFO L131 PetriNetUnfolder]: For 453340/497342 co-relation queries the response was YES. [2022-11-21 14:04:25,785 INFO L83 FinitePrefix]: Finished finitePrefix Result has 140121 conditions, 20505 events. 12379/20505 cut-off events. For 453340/497342 co-relation queries the response was YES. Maximal size of possible extension queue 1402. Compared 169122 event pairs, 903 based on Foata normal form. 1184/20081 useless extension candidates. Maximal degree in co-relation 140026. Up to 6311 conditions per place. [2022-11-21 14:04:25,895 INFO L137 encePairwiseOnDemand]: 129/140 looper letters, 221 selfloop transitions, 58 changer transitions 43/426 dead transitions. [2022-11-21 14:04:25,896 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 200 places, 426 transitions, 4965 flow [2022-11-21 14:04:25,896 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-11-21 14:04:25,897 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2022-11-21 14:04:25,906 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 1975 transitions. [2022-11-21 14:04:25,910 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8816964285714286 [2022-11-21 14:04:25,910 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 1975 transitions. [2022-11-21 14:04:25,910 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 1975 transitions. [2022-11-21 14:04:25,914 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 14:04:25,914 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 1975 transitions. [2022-11-21 14:04:25,920 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 123.4375) internal successors, (1975), 16 states have internal predecessors, (1975), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 14:04:25,925 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 140.0) internal successors, (2380), 17 states have internal predecessors, (2380), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 14:04:25,926 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 140.0) internal successors, (2380), 17 states have internal predecessors, (2380), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 14:04:25,926 INFO L175 Difference]: Start difference. First operand has 185 places, 184 transitions, 1139 flow. Second operand 16 states and 1975 transitions. [2022-11-21 14:04:25,926 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 200 places, 426 transitions, 4965 flow [2022-11-21 14:04:27,570 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 194 places, 426 transitions, 4816 flow, removed 43 selfloop flow, removed 6 redundant places. [2022-11-21 14:04:27,575 INFO L231 Difference]: Finished difference. Result has 198 places, 207 transitions, 1473 flow [2022-11-21 14:04:27,576 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=140, PETRI_DIFFERENCE_MINUEND_FLOW=1012, PETRI_DIFFERENCE_MINUEND_PLACES=179, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=181, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=137, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=1473, PETRI_PLACES=198, PETRI_TRANSITIONS=207} [2022-11-21 14:04:27,576 INFO L288 CegarLoopForPetriNet]: 147 programPoint places, 51 predicate places. [2022-11-21 14:04:27,577 INFO L495 AbstractCegarLoop]: Abstraction has has 198 places, 207 transitions, 1473 flow [2022-11-21 14:04:27,577 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 115.25) internal successors, (922), 8 states have internal predecessors, (922), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 14:04:27,577 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 14:04:27,578 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] [2022-11-21 14:04:27,578 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-21 14:04:27,578 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-11-21 14:04:27,578 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 14:04:27,578 INFO L85 PathProgramCache]: Analyzing trace with hash -610084084, now seen corresponding path program 1 times [2022-11-21 14:04:27,578 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 14:04:27,579 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [84353076] [2022-11-21 14:04:27,579 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 14:04:27,579 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 14:04:27,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:04:28,328 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 14:04:28,328 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 14:04:28,328 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [84353076] [2022-11-21 14:04:28,328 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [84353076] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 14:04:28,328 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 14:04:28,329 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-21 14:04:28,329 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1532702491] [2022-11-21 14:04:28,329 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 14:04:28,329 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-21 14:04:28,330 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 14:04:28,330 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-21 14:04:28,330 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-11-21 14:04:28,331 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 101 out of 140 [2022-11-21 14:04:28,332 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 198 places, 207 transitions, 1473 flow. Second operand has 8 states, 8 states have (on average 105.0) internal successors, (840), 8 states have internal predecessors, (840), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 14:04:28,333 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 14:04:28,333 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 101 of 140 [2022-11-21 14:04:28,333 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 14:04:30,448 INFO L130 PetriNetUnfolder]: 3066/9589 cut-off events. [2022-11-21 14:04:30,449 INFO L131 PetriNetUnfolder]: For 53305/54848 co-relation queries the response was YES. [2022-11-21 14:04:30,523 INFO L83 FinitePrefix]: Finished finitePrefix Result has 40598 conditions, 9589 events. 3066/9589 cut-off events. For 53305/54848 co-relation queries the response was YES. Maximal size of possible extension queue 1073. Compared 115356 event pairs, 118 based on Foata normal form. 14/9025 useless extension candidates. Maximal degree in co-relation 40489. Up to 1607 conditions per place. [2022-11-21 14:04:30,592 INFO L137 encePairwiseOnDemand]: 132/140 looper letters, 106 selfloop transitions, 6 changer transitions 29/289 dead transitions. [2022-11-21 14:04:30,592 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 205 places, 289 transitions, 2822 flow [2022-11-21 14:04:30,593 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-21 14:04:30,593 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-11-21 14:04:30,594 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 898 transitions. [2022-11-21 14:04:30,594 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8017857142857143 [2022-11-21 14:04:30,594 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 898 transitions. [2022-11-21 14:04:30,594 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 898 transitions. [2022-11-21 14:04:30,595 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 14:04:30,595 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 898 transitions. [2022-11-21 14:04:30,597 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 112.25) internal successors, (898), 8 states have internal predecessors, (898), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 14:04:30,599 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 140.0) internal successors, (1260), 9 states have internal predecessors, (1260), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 14:04:30,600 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 140.0) internal successors, (1260), 9 states have internal predecessors, (1260), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 14:04:30,600 INFO L175 Difference]: Start difference. First operand has 198 places, 207 transitions, 1473 flow. Second operand 8 states and 898 transitions. [2022-11-21 14:04:30,600 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 205 places, 289 transitions, 2822 flow [2022-11-21 14:04:31,651 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 194 places, 289 transitions, 2509 flow, removed 114 selfloop flow, removed 11 redundant places. [2022-11-21 14:04:31,655 INFO L231 Difference]: Finished difference. Result has 199 places, 208 transitions, 1207 flow [2022-11-21 14:04:31,656 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=140, PETRI_DIFFERENCE_MINUEND_FLOW=1160, PETRI_DIFFERENCE_MINUEND_PLACES=187, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=207, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=201, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1207, PETRI_PLACES=199, PETRI_TRANSITIONS=208} [2022-11-21 14:04:31,656 INFO L288 CegarLoopForPetriNet]: 147 programPoint places, 52 predicate places. [2022-11-21 14:04:31,657 INFO L495 AbstractCegarLoop]: Abstraction has has 199 places, 208 transitions, 1207 flow [2022-11-21 14:04:31,657 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 105.0) internal successors, (840), 8 states have internal predecessors, (840), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 14:04:31,657 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 14:04:31,658 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] [2022-11-21 14:04:31,658 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-21 14:04:31,658 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-11-21 14:04:31,658 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 14:04:31,659 INFO L85 PathProgramCache]: Analyzing trace with hash -437033312, now seen corresponding path program 2 times [2022-11-21 14:04:31,659 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 14:04:31,659 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1384337709] [2022-11-21 14:04:31,659 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 14:04:31,659 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 14:04:31,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:04:32,161 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 14:04:32,161 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 14:04:32,162 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1384337709] [2022-11-21 14:04:32,162 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1384337709] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 14:04:32,162 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 14:04:32,162 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-11-21 14:04:32,162 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1003491404] [2022-11-21 14:04:32,163 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 14:04:32,163 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-21 14:04:32,163 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 14:04:32,164 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-21 14:04:32,164 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2022-11-21 14:04:32,165 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 113 out of 140 [2022-11-21 14:04:32,166 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 199 places, 208 transitions, 1207 flow. Second operand has 9 states, 9 states have (on average 115.22222222222223) internal successors, (1037), 9 states have internal predecessors, (1037), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 14:04:32,166 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 14:04:32,167 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 113 of 140 [2022-11-21 14:04:32,167 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 14:04:39,131 INFO L130 PetriNetUnfolder]: 20322/33842 cut-off events. [2022-11-21 14:04:39,131 INFO L131 PetriNetUnfolder]: For 696499/768655 co-relation queries the response was YES. [2022-11-21 14:04:39,378 INFO L83 FinitePrefix]: Finished finitePrefix Result has 211745 conditions, 33842 events. 20322/33842 cut-off events. For 696499/768655 co-relation queries the response was YES. Maximal size of possible extension queue 2344. Compared 302228 event pairs, 1355 based on Foata normal form. 1594/32773 useless extension candidates. Maximal degree in co-relation 211702. Up to 9955 conditions per place. [2022-11-21 14:04:39,432 INFO L137 encePairwiseOnDemand]: 129/140 looper letters, 182 selfloop transitions, 59 changer transitions 80/426 dead transitions. [2022-11-21 14:04:39,432 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 214 places, 426 transitions, 4510 flow [2022-11-21 14:04:39,433 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-11-21 14:04:39,433 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2022-11-21 14:04:39,435 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 2301 transitions. [2022-11-21 14:04:39,437 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8650375939849624 [2022-11-21 14:04:39,437 INFO L72 ComplementDD]: Start complementDD. Operand 19 states and 2301 transitions. [2022-11-21 14:04:39,437 INFO L73 IsDeterministic]: Start isDeterministic. Operand 19 states and 2301 transitions. [2022-11-21 14:04:39,439 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 14:04:39,439 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 19 states and 2301 transitions. [2022-11-21 14:04:39,443 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 20 states, 19 states have (on average 121.10526315789474) internal successors, (2301), 19 states have internal predecessors, (2301), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 14:04:39,448 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 20 states, 20 states have (on average 140.0) internal successors, (2800), 20 states have internal predecessors, (2800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 14:04:39,449 INFO L81 ComplementDD]: Finished complementDD. Result has 20 states, 20 states have (on average 140.0) internal successors, (2800), 20 states have internal predecessors, (2800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 14:04:39,450 INFO L175 Difference]: Start difference. First operand has 199 places, 208 transitions, 1207 flow. Second operand 19 states and 2301 transitions. [2022-11-21 14:04:39,450 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 214 places, 426 transitions, 4510 flow [2022-11-21 14:04:42,472 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 207 places, 426 transitions, 3965 flow, removed 257 selfloop flow, removed 7 redundant places. [2022-11-21 14:04:42,479 INFO L231 Difference]: Finished difference. Result has 214 places, 203 transitions, 1214 flow [2022-11-21 14:04:42,480 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=140, PETRI_DIFFERENCE_MINUEND_FLOW=1089, PETRI_DIFFERENCE_MINUEND_PLACES=189, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=208, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=56, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=149, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=1214, PETRI_PLACES=214, PETRI_TRANSITIONS=203} [2022-11-21 14:04:42,480 INFO L288 CegarLoopForPetriNet]: 147 programPoint places, 67 predicate places. [2022-11-21 14:04:42,481 INFO L495 AbstractCegarLoop]: Abstraction has has 214 places, 203 transitions, 1214 flow [2022-11-21 14:04:42,481 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 115.22222222222223) internal successors, (1037), 9 states have internal predecessors, (1037), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 14:04:42,481 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 14:04:42,482 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] [2022-11-21 14:04:42,482 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-21 14:04:42,482 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-11-21 14:04:42,483 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 14:04:42,483 INFO L85 PathProgramCache]: Analyzing trace with hash 324149144, now seen corresponding path program 1 times [2022-11-21 14:04:42,483 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 14:04:42,483 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1934263652] [2022-11-21 14:04:42,484 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 14:04:42,484 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 14:04:42,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:04:43,111 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 14:04:43,112 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 14:04:43,112 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1934263652] [2022-11-21 14:04:43,112 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1934263652] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 14:04:43,112 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 14:04:43,113 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-21 14:04:43,113 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [73710895] [2022-11-21 14:04:43,113 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 14:04:43,113 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-21 14:04:43,114 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 14:04:43,114 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-21 14:04:43,115 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-21 14:04:43,116 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 115 out of 140 [2022-11-21 14:04:43,126 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 214 places, 203 transitions, 1214 flow. Second operand has 7 states, 7 states have (on average 117.85714285714286) internal successors, (825), 7 states have internal predecessors, (825), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 14:04:43,126 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 14:04:43,134 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 115 of 140 [2022-11-21 14:04:43,134 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 14:04:45,163 INFO L130 PetriNetUnfolder]: 3829/11948 cut-off events. [2022-11-21 14:04:45,163 INFO L131 PetriNetUnfolder]: For 45769/47297 co-relation queries the response was YES. [2022-11-21 14:04:45,266 INFO L83 FinitePrefix]: Finished finitePrefix Result has 45003 conditions, 11948 events. 3829/11948 cut-off events. For 45769/47297 co-relation queries the response was YES. Maximal size of possible extension queue 1359. Compared 153588 event pairs, 196 based on Foata normal form. 16/11311 useless extension candidates. Maximal degree in co-relation 44900. Up to 1159 conditions per place. [2022-11-21 14:04:45,299 INFO L137 encePairwiseOnDemand]: 134/140 looper letters, 69 selfloop transitions, 3 changer transitions 5/243 dead transitions. [2022-11-21 14:04:45,299 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 217 places, 243 transitions, 1733 flow [2022-11-21 14:04:45,299 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-21 14:04:45,299 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-21 14:04:45,300 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 842 transitions. [2022-11-21 14:04:45,301 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8591836734693877 [2022-11-21 14:04:45,301 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 842 transitions. [2022-11-21 14:04:45,301 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 842 transitions. [2022-11-21 14:04:45,302 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 14:04:45,302 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 842 transitions. [2022-11-21 14:04:45,304 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 120.28571428571429) internal successors, (842), 7 states have internal predecessors, (842), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 14:04:45,306 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 140.0) internal successors, (1120), 8 states have internal predecessors, (1120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 14:04:45,306 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 140.0) internal successors, (1120), 8 states have internal predecessors, (1120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 14:04:45,306 INFO L175 Difference]: Start difference. First operand has 214 places, 203 transitions, 1214 flow. Second operand 7 states and 842 transitions. [2022-11-21 14:04:45,307 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 217 places, 243 transitions, 1733 flow [2022-11-21 14:04:46,007 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 194 places, 243 transitions, 1381 flow, removed 130 selfloop flow, removed 23 redundant places. [2022-11-21 14:04:46,009 INFO L231 Difference]: Finished difference. Result has 199 places, 205 transitions, 1020 flow [2022-11-21 14:04:46,010 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=140, PETRI_DIFFERENCE_MINUEND_FLOW=988, PETRI_DIFFERENCE_MINUEND_PLACES=188, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=203, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=200, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1020, PETRI_PLACES=199, PETRI_TRANSITIONS=205} [2022-11-21 14:04:46,010 INFO L288 CegarLoopForPetriNet]: 147 programPoint places, 52 predicate places. [2022-11-21 14:04:46,010 INFO L495 AbstractCegarLoop]: Abstraction has has 199 places, 205 transitions, 1020 flow [2022-11-21 14:04:46,011 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 117.85714285714286) internal successors, (825), 7 states have internal predecessors, (825), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 14:04:46,011 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 14:04:46,011 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] [2022-11-21 14:04:46,011 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-21 14:04:46,013 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-11-21 14:04:46,013 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 14:04:46,013 INFO L85 PathProgramCache]: Analyzing trace with hash -2006978354, now seen corresponding path program 2 times [2022-11-21 14:04:46,013 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 14:04:46,014 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [464999852] [2022-11-21 14:04:46,014 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 14:04:46,014 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 14:04:46,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:04:46,540 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 14:04:46,541 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 14:04:46,541 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [464999852] [2022-11-21 14:04:46,541 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [464999852] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 14:04:46,541 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 14:04:46,541 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-21 14:04:46,541 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [716509163] [2022-11-21 14:04:46,542 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 14:04:46,542 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-21 14:04:46,542 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 14:04:46,542 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-21 14:04:46,543 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-11-21 14:04:46,543 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 101 out of 140 [2022-11-21 14:04:46,544 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 199 places, 205 transitions, 1020 flow. Second operand has 8 states, 8 states have (on average 105.25) internal successors, (842), 8 states have internal predecessors, (842), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 14:04:46,544 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 14:04:46,544 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 101 of 140 [2022-11-21 14:04:46,545 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 14:04:50,573 INFO L130 PetriNetUnfolder]: 6821/21575 cut-off events. [2022-11-21 14:04:50,573 INFO L131 PetriNetUnfolder]: For 33385/34734 co-relation queries the response was YES. [2022-11-21 14:04:50,769 INFO L83 FinitePrefix]: Finished finitePrefix Result has 65095 conditions, 21575 events. 6821/21575 cut-off events. For 33385/34734 co-relation queries the response was YES. Maximal size of possible extension queue 2854. Compared 305362 event pairs, 171 based on Foata normal form. 2/20198 useless extension candidates. Maximal degree in co-relation 65060. Up to 2072 conditions per place. [2022-11-21 14:04:50,794 INFO L137 encePairwiseOnDemand]: 132/140 looper letters, 97 selfloop transitions, 6 changer transitions 23/269 dead transitions. [2022-11-21 14:04:50,794 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 203 places, 269 transitions, 1700 flow [2022-11-21 14:04:50,795 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-21 14:04:50,795 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-11-21 14:04:50,796 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 864 transitions. [2022-11-21 14:04:50,796 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7714285714285715 [2022-11-21 14:04:50,797 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 864 transitions. [2022-11-21 14:04:50,797 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 864 transitions. [2022-11-21 14:04:50,797 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 14:04:50,797 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 864 transitions. [2022-11-21 14:04:50,799 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 108.0) internal successors, (864), 8 states have internal predecessors, (864), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 14:04:50,801 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 140.0) internal successors, (1260), 9 states have internal predecessors, (1260), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 14:04:50,802 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 140.0) internal successors, (1260), 9 states have internal predecessors, (1260), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 14:04:50,802 INFO L175 Difference]: Start difference. First operand has 199 places, 205 transitions, 1020 flow. Second operand 8 states and 864 transitions. [2022-11-21 14:04:50,802 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 203 places, 269 transitions, 1700 flow [2022-11-21 14:04:53,238 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 199 places, 269 transitions, 1689 flow, removed 5 selfloop flow, removed 4 redundant places. [2022-11-21 14:04:53,241 INFO L231 Difference]: Finished difference. Result has 204 places, 207 transitions, 1055 flow [2022-11-21 14:04:53,242 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=140, PETRI_DIFFERENCE_MINUEND_FLOW=1013, PETRI_DIFFERENCE_MINUEND_PLACES=192, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=205, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=199, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1055, PETRI_PLACES=204, PETRI_TRANSITIONS=207} [2022-11-21 14:04:53,242 INFO L288 CegarLoopForPetriNet]: 147 programPoint places, 57 predicate places. [2022-11-21 14:04:53,243 INFO L495 AbstractCegarLoop]: Abstraction has has 204 places, 207 transitions, 1055 flow [2022-11-21 14:04:53,243 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 105.25) internal successors, (842), 8 states have internal predecessors, (842), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 14:04:53,243 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 14:04:53,244 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] [2022-11-21 14:04:53,244 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-11-21 14:04:53,244 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-11-21 14:04:53,244 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 14:04:53,245 INFO L85 PathProgramCache]: Analyzing trace with hash 415472470, now seen corresponding path program 3 times [2022-11-21 14:04:53,245 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 14:04:53,245 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [819967899] [2022-11-21 14:04:53,245 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 14:04:53,245 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 14:04:53,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:04:54,966 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 14:04:54,966 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 14:04:54,966 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [819967899] [2022-11-21 14:04:54,966 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [819967899] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 14:04:54,967 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 14:04:54,967 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-11-21 14:04:54,967 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1188357906] [2022-11-21 14:04:54,967 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 14:04:54,968 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-21 14:04:54,968 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 14:04:54,968 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-21 14:04:54,968 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=96, Unknown=0, NotChecked=0, Total=132 [2022-11-21 14:04:54,969 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 110 out of 140 [2022-11-21 14:04:54,970 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 204 places, 207 transitions, 1055 flow. Second operand has 12 states, 12 states have (on average 112.08333333333333) internal successors, (1345), 12 states have internal predecessors, (1345), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 14:04:54,971 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 14:04:54,971 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 110 of 140 [2022-11-21 14:04:54,971 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand