./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/weaver/array-eq-symm.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version dbf71c69 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4616c7e-5057-420b-a55c-693832399912/bin/uautomizer-J5u9QxTXDZ/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4616c7e-5057-420b-a55c-693832399912/bin/uautomizer-J5u9QxTXDZ/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4616c7e-5057-420b-a55c-693832399912/bin/uautomizer-J5u9QxTXDZ/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4616c7e-5057-420b-a55c-693832399912/bin/uautomizer-J5u9QxTXDZ/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/array-eq-symm.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4616c7e-5057-420b-a55c-693832399912/bin/uautomizer-J5u9QxTXDZ/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4616c7e-5057-420b-a55c-693832399912/bin/uautomizer-J5u9QxTXDZ --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 1a172ae6dd3a5207c1a2580ce55cc24497fcf78586be62b7482a56f18aa6beb2 --- 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-dbf71c6-m [2022-10-17 11:00:28,025 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-10-17 11:00:28,033 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-10-17 11:00:28,083 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-10-17 11:00:28,084 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-10-17 11:00:28,089 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-10-17 11:00:28,091 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-10-17 11:00:28,098 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-10-17 11:00:28,102 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-10-17 11:00:28,110 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-10-17 11:00:28,111 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-10-17 11:00:28,114 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-10-17 11:00:28,115 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-10-17 11:00:28,118 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-10-17 11:00:28,121 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-10-17 11:00:28,123 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-10-17 11:00:28,125 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-10-17 11:00:28,126 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-10-17 11:00:28,129 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-10-17 11:00:28,140 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-10-17 11:00:28,142 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-10-17 11:00:28,144 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-10-17 11:00:28,149 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-10-17 11:00:28,150 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-10-17 11:00:28,162 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-10-17 11:00:28,162 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-10-17 11:00:28,163 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-10-17 11:00:28,165 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-10-17 11:00:28,166 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-10-17 11:00:28,168 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-10-17 11:00:28,169 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-10-17 11:00:28,171 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-10-17 11:00:28,173 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-10-17 11:00:28,175 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-10-17 11:00:28,176 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-10-17 11:00:28,177 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-10-17 11:00:28,178 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-10-17 11:00:28,178 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-10-17 11:00:28,178 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-10-17 11:00:28,180 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-10-17 11:00:28,180 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-10-17 11:00:28,182 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4616c7e-5057-420b-a55c-693832399912/bin/uautomizer-J5u9QxTXDZ/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-10-17 11:00:28,233 INFO L113 SettingsManager]: Loading preferences was successful [2022-10-17 11:00:28,233 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-10-17 11:00:28,234 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-10-17 11:00:28,235 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-10-17 11:00:28,236 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-10-17 11:00:28,236 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-10-17 11:00:28,237 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-10-17 11:00:28,237 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-10-17 11:00:28,238 INFO L138 SettingsManager]: * Use SBE=true [2022-10-17 11:00:28,238 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-10-17 11:00:28,239 INFO L138 SettingsManager]: * sizeof long=4 [2022-10-17 11:00:28,240 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-10-17 11:00:28,240 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-10-17 11:00:28,240 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-10-17 11:00:28,240 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-10-17 11:00:28,241 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-10-17 11:00:28,241 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-10-17 11:00:28,241 INFO L138 SettingsManager]: * sizeof long double=12 [2022-10-17 11:00:28,241 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-10-17 11:00:28,242 INFO L138 SettingsManager]: * Use constant arrays=true [2022-10-17 11:00:28,242 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-10-17 11:00:28,242 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-10-17 11:00:28,243 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-10-17 11:00:28,243 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-10-17 11:00:28,243 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-17 11:00:28,244 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-10-17 11:00:28,245 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-10-17 11:00:28,246 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-10-17 11:00:28,246 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-10-17 11:00:28,246 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-10-17 11:00:28,247 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-10-17 11:00:28,247 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-10-17 11:00:28,247 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-10-17 11:00:28,248 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_f4616c7e-5057-420b-a55c-693832399912/bin/uautomizer-J5u9QxTXDZ/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4616c7e-5057-420b-a55c-693832399912/bin/uautomizer-J5u9QxTXDZ Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1a172ae6dd3a5207c1a2580ce55cc24497fcf78586be62b7482a56f18aa6beb2 [2022-10-17 11:00:28,631 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-10-17 11:00:28,655 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-10-17 11:00:28,658 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-10-17 11:00:28,659 INFO L271 PluginConnector]: Initializing CDTParser... [2022-10-17 11:00:28,660 INFO L275 PluginConnector]: CDTParser initialized [2022-10-17 11:00:28,662 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4616c7e-5057-420b-a55c-693832399912/bin/uautomizer-J5u9QxTXDZ/../../sv-benchmarks/c/weaver/array-eq-symm.wvr.c [2022-10-17 11:00:28,750 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4616c7e-5057-420b-a55c-693832399912/bin/uautomizer-J5u9QxTXDZ/data/958d84bd9/be3515b5f1734a02ad32812e8bbfdc2c/FLAG7a9eceb2d [2022-10-17 11:00:29,331 INFO L306 CDTParser]: Found 1 translation units. [2022-10-17 11:00:29,331 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4616c7e-5057-420b-a55c-693832399912/sv-benchmarks/c/weaver/array-eq-symm.wvr.c [2022-10-17 11:00:29,345 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4616c7e-5057-420b-a55c-693832399912/bin/uautomizer-J5u9QxTXDZ/data/958d84bd9/be3515b5f1734a02ad32812e8bbfdc2c/FLAG7a9eceb2d [2022-10-17 11:00:29,669 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4616c7e-5057-420b-a55c-693832399912/bin/uautomizer-J5u9QxTXDZ/data/958d84bd9/be3515b5f1734a02ad32812e8bbfdc2c [2022-10-17 11:00:29,673 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-10-17 11:00:29,675 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-10-17 11:00:29,679 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-10-17 11:00:29,679 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-10-17 11:00:29,687 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-10-17 11:00:29,689 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.10 11:00:29" (1/1) ... [2022-10-17 11:00:29,692 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@64e33511 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 11:00:29, skipping insertion in model container [2022-10-17 11:00:29,712 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.10 11:00:29" (1/1) ... [2022-10-17 11:00:29,720 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-10-17 11:00:29,741 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-10-17 11:00:29,979 WARN L230 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_f4616c7e-5057-420b-a55c-693832399912/sv-benchmarks/c/weaver/array-eq-symm.wvr.c[2251,2264] [2022-10-17 11:00:29,997 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-17 11:00:30,008 INFO L203 MainTranslator]: Completed pre-run [2022-10-17 11:00:30,045 WARN L230 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_f4616c7e-5057-420b-a55c-693832399912/sv-benchmarks/c/weaver/array-eq-symm.wvr.c[2251,2264] [2022-10-17 11:00:30,049 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-17 11:00:30,070 INFO L208 MainTranslator]: Completed translation [2022-10-17 11:00:30,071 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 11:00:30 WrapperNode [2022-10-17 11:00:30,071 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-10-17 11:00:30,073 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-10-17 11:00:30,073 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-10-17 11:00:30,073 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-10-17 11:00:30,083 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 11:00:30" (1/1) ... [2022-10-17 11:00:30,108 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 11:00:30" (1/1) ... [2022-10-17 11:00:30,134 INFO L138 Inliner]: procedures = 23, calls = 29, calls flagged for inlining = 7, calls inlined = 9, statements flattened = 112 [2022-10-17 11:00:30,134 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-10-17 11:00:30,135 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-10-17 11:00:30,135 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-10-17 11:00:30,136 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-10-17 11:00:30,146 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 11:00:30" (1/1) ... [2022-10-17 11:00:30,146 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 11:00:30" (1/1) ... [2022-10-17 11:00:30,149 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 11:00:30" (1/1) ... [2022-10-17 11:00:30,150 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 11:00:30" (1/1) ... [2022-10-17 11:00:30,157 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 11:00:30" (1/1) ... [2022-10-17 11:00:30,163 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 11:00:30" (1/1) ... [2022-10-17 11:00:30,165 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 11:00:30" (1/1) ... [2022-10-17 11:00:30,166 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 11:00:30" (1/1) ... [2022-10-17 11:00:30,178 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-10-17 11:00:30,179 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-10-17 11:00:30,179 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-10-17 11:00:30,179 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-10-17 11:00:30,180 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 11:00:30" (1/1) ... [2022-10-17 11:00:30,185 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-17 11:00:30,198 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4616c7e-5057-420b-a55c-693832399912/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 11:00:30,211 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4616c7e-5057-420b-a55c-693832399912/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-10-17 11:00:30,218 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4616c7e-5057-420b-a55c-693832399912/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-10-17 11:00:30,268 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-10-17 11:00:30,268 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-10-17 11:00:30,268 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-10-17 11:00:30,269 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-10-17 11:00:30,269 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-10-17 11:00:30,269 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-10-17 11:00:30,269 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-10-17 11:00:30,269 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-10-17 11:00:30,270 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-10-17 11:00:30,270 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-10-17 11:00:30,271 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-10-17 11:00:30,271 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-10-17 11:00:30,271 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-10-17 11:00:30,273 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-10-17 11:00:30,466 INFO L235 CfgBuilder]: Building ICFG [2022-10-17 11:00:30,468 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-10-17 11:00:30,866 INFO L276 CfgBuilder]: Performing block encoding [2022-10-17 11:00:30,876 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-10-17 11:00:30,876 INFO L300 CfgBuilder]: Removed 4 assume(true) statements. [2022-10-17 11:00:30,879 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.10 11:00:30 BoogieIcfgContainer [2022-10-17 11:00:30,879 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-10-17 11:00:30,881 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-10-17 11:00:30,882 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-10-17 11:00:30,885 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-10-17 11:00:30,886 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.10 11:00:29" (1/3) ... [2022-10-17 11:00:30,887 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2a4d2a28 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.10 11:00:30, skipping insertion in model container [2022-10-17 11:00:30,887 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 11:00:30" (2/3) ... [2022-10-17 11:00:30,887 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2a4d2a28 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.10 11:00:30, skipping insertion in model container [2022-10-17 11:00:30,887 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.10 11:00:30" (3/3) ... [2022-10-17 11:00:30,889 INFO L112 eAbstractionObserver]: Analyzing ICFG array-eq-symm.wvr.c [2022-10-17 11:00:30,898 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-10-17 11:00:30,910 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-10-17 11:00:30,910 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-10-17 11:00:30,911 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-10-17 11:00:31,000 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-10-17 11:00:31,053 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 166 places, 174 transitions, 364 flow [2022-10-17 11:00:31,183 INFO L130 PetriNetUnfolder]: 15/172 cut-off events. [2022-10-17 11:00:31,184 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-10-17 11:00:31,188 INFO L83 FinitePrefix]: Finished finitePrefix Result has 181 conditions, 172 events. 15/172 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 117 event pairs, 0 based on Foata normal form. 0/156 useless extension candidates. Maximal degree in co-relation 131. Up to 3 conditions per place. [2022-10-17 11:00:31,189 INFO L82 GeneralOperation]: Start removeDead. Operand has 166 places, 174 transitions, 364 flow [2022-10-17 11:00:31,196 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 155 places, 163 transitions, 338 flow [2022-10-17 11:00:31,207 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-10-17 11:00:31,215 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;@4ce22b3f, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-10-17 11:00:31,215 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2022-10-17 11:00:31,259 INFO L130 PetriNetUnfolder]: 15/162 cut-off events. [2022-10-17 11:00:31,259 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-10-17 11:00:31,259 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-10-17 11:00:31,260 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 11:00:31,261 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-10-17 11:00:31,267 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 11:00:31,267 INFO L85 PathProgramCache]: Analyzing trace with hash 1933837309, now seen corresponding path program 1 times [2022-10-17 11:00:31,278 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 11:00:31,279 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1586763466] [2022-10-17 11:00:31,279 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 11:00:31,280 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 11:00:31,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 11:00:31,662 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 11:00:31,663 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 11:00:31,664 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1586763466] [2022-10-17 11:00:31,665 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1586763466] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 11:00:31,665 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 11:00:31,666 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-10-17 11:00:31,668 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1140335893] [2022-10-17 11:00:31,669 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 11:00:31,681 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-10-17 11:00:31,682 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 11:00:31,715 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-10-17 11:00:31,718 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-10-17 11:00:31,722 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 160 out of 174 [2022-10-17 11:00:31,726 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 155 places, 163 transitions, 338 flow. Second operand has 2 states, 2 states have (on average 163.5) internal successors, (327), 2 states have internal predecessors, (327), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 11:00:31,727 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-10-17 11:00:31,727 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 160 of 174 [2022-10-17 11:00:31,728 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-10-17 11:00:31,816 INFO L130 PetriNetUnfolder]: 6/154 cut-off events. [2022-10-17 11:00:31,816 INFO L131 PetriNetUnfolder]: For 8/8 co-relation queries the response was YES. [2022-10-17 11:00:31,819 INFO L83 FinitePrefix]: Finished finitePrefix Result has 168 conditions, 154 events. 6/154 cut-off events. For 8/8 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 109 event pairs, 0 based on Foata normal form. 11/154 useless extension candidates. Maximal degree in co-relation 125. Up to 5 conditions per place. [2022-10-17 11:00:31,822 INFO L137 encePairwiseOnDemand]: 165/174 looper letters, 4 selfloop transitions, 0 changer transitions 5/154 dead transitions. [2022-10-17 11:00:31,822 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 156 places, 154 transitions, 328 flow [2022-10-17 11:00:31,824 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-10-17 11:00:31,826 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2022-10-17 11:00:31,841 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 333 transitions. [2022-10-17 11:00:31,847 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.9568965517241379 [2022-10-17 11:00:31,848 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 333 transitions. [2022-10-17 11:00:31,849 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 333 transitions. [2022-10-17 11:00:31,854 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-10-17 11:00:31,857 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 333 transitions. [2022-10-17 11:00:31,865 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 166.5) internal successors, (333), 2 states have internal predecessors, (333), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 11:00:31,877 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 174.0) internal successors, (522), 3 states have internal predecessors, (522), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 11:00:31,878 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 174.0) internal successors, (522), 3 states have internal predecessors, (522), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 11:00:31,881 INFO L175 Difference]: Start difference. First operand has 155 places, 163 transitions, 338 flow. Second operand 2 states and 333 transitions. [2022-10-17 11:00:31,882 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 156 places, 154 transitions, 328 flow [2022-10-17 11:00:31,891 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 152 places, 154 transitions, 320 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-10-17 11:00:31,900 INFO L231 Difference]: Finished difference. Result has 152 places, 149 transitions, 302 flow [2022-10-17 11:00:31,903 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=312, PETRI_DIFFERENCE_MINUEND_PLACES=151, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=154, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=154, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=302, PETRI_PLACES=152, PETRI_TRANSITIONS=149} [2022-10-17 11:00:31,910 INFO L287 CegarLoopForPetriNet]: 155 programPoint places, -3 predicate places. [2022-10-17 11:00:31,910 INFO L495 AbstractCegarLoop]: Abstraction has has 152 places, 149 transitions, 302 flow [2022-10-17 11:00:31,911 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 163.5) internal successors, (327), 2 states have internal predecessors, (327), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 11:00:31,911 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-10-17 11:00:31,912 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 11:00:31,913 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-10-17 11:00:31,913 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-10-17 11:00:31,916 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 11:00:31,917 INFO L85 PathProgramCache]: Analyzing trace with hash 2116646914, now seen corresponding path program 1 times [2022-10-17 11:00:31,917 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 11:00:31,918 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1982697257] [2022-10-17 11:00:31,919 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 11:00:31,919 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 11:00:32,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 11:00:32,791 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 11:00:32,792 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 11:00:32,792 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1982697257] [2022-10-17 11:00:32,793 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1982697257] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 11:00:32,794 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 11:00:32,794 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-10-17 11:00:32,795 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1154916822] [2022-10-17 11:00:32,796 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 11:00:32,801 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-10-17 11:00:32,801 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 11:00:32,802 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-10-17 11:00:32,802 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-10-17 11:00:32,807 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 121 out of 174 [2022-10-17 11:00:32,810 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 152 places, 149 transitions, 302 flow. Second operand has 6 states, 6 states have (on average 125.66666666666667) internal successors, (754), 6 states have internal predecessors, (754), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 11:00:32,810 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-10-17 11:00:32,810 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 121 of 174 [2022-10-17 11:00:32,811 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-10-17 11:00:33,242 INFO L130 PetriNetUnfolder]: 171/632 cut-off events. [2022-10-17 11:00:33,243 INFO L131 PetriNetUnfolder]: For 22/34 co-relation queries the response was YES. [2022-10-17 11:00:33,248 INFO L83 FinitePrefix]: Finished finitePrefix Result has 964 conditions, 632 events. 171/632 cut-off events. For 22/34 co-relation queries the response was YES. Maximal size of possible extension queue 38. Compared 3099 event pairs, 41 based on Foata normal form. 1/552 useless extension candidates. Maximal degree in co-relation 961. Up to 122 conditions per place. [2022-10-17 11:00:33,253 INFO L137 encePairwiseOnDemand]: 167/174 looper letters, 65 selfloop transitions, 5 changer transitions 4/185 dead transitions. [2022-10-17 11:00:33,254 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 152 places, 185 transitions, 527 flow [2022-10-17 11:00:33,254 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-10-17 11:00:33,254 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-10-17 11:00:33,260 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 801 transitions. [2022-10-17 11:00:33,261 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.7672413793103449 [2022-10-17 11:00:33,261 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 801 transitions. [2022-10-17 11:00:33,262 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 801 transitions. [2022-10-17 11:00:33,263 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-10-17 11:00:33,263 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 801 transitions. [2022-10-17 11:00:33,267 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 133.5) internal successors, (801), 6 states have internal predecessors, (801), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 11:00:33,274 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 174.0) internal successors, (1218), 7 states have internal predecessors, (1218), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 11:00:33,276 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 174.0) internal successors, (1218), 7 states have internal predecessors, (1218), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 11:00:33,276 INFO L175 Difference]: Start difference. First operand has 152 places, 149 transitions, 302 flow. Second operand 6 states and 801 transitions. [2022-10-17 11:00:33,276 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 152 places, 185 transitions, 527 flow [2022-10-17 11:00:33,281 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 152 places, 185 transitions, 527 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-10-17 11:00:33,287 INFO L231 Difference]: Finished difference. Result has 155 places, 152 transitions, 331 flow [2022-10-17 11:00:33,288 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=302, PETRI_DIFFERENCE_MINUEND_PLACES=147, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=149, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=145, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=331, PETRI_PLACES=155, PETRI_TRANSITIONS=152} [2022-10-17 11:00:33,289 INFO L287 CegarLoopForPetriNet]: 155 programPoint places, 0 predicate places. [2022-10-17 11:00:33,289 INFO L495 AbstractCegarLoop]: Abstraction has has 155 places, 152 transitions, 331 flow [2022-10-17 11:00:33,290 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 125.66666666666667) internal successors, (754), 6 states have internal predecessors, (754), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 11:00:33,291 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-10-17 11:00:33,291 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 11:00:33,292 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-10-17 11:00:33,292 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-10-17 11:00:33,294 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 11:00:33,294 INFO L85 PathProgramCache]: Analyzing trace with hash 336168701, now seen corresponding path program 1 times [2022-10-17 11:00:33,294 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 11:00:33,295 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1335538178] [2022-10-17 11:00:33,295 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 11:00:33,295 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 11:00:33,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 11:00:33,713 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 11:00:33,715 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 11:00:33,715 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1335538178] [2022-10-17 11:00:33,715 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1335538178] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 11:00:33,716 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 11:00:33,716 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-10-17 11:00:33,717 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1238484528] [2022-10-17 11:00:33,717 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 11:00:33,723 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-10-17 11:00:33,723 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 11:00:33,724 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-10-17 11:00:33,724 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2022-10-17 11:00:33,726 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 124 out of 174 [2022-10-17 11:00:33,728 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 155 places, 152 transitions, 331 flow. Second operand has 7 states, 7 states have (on average 128.42857142857142) internal successors, (899), 7 states have internal predecessors, (899), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 11:00:33,729 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-10-17 11:00:33,729 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 124 of 174 [2022-10-17 11:00:33,729 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-10-17 11:00:34,059 INFO L130 PetriNetUnfolder]: 119/657 cut-off events. [2022-10-17 11:00:34,059 INFO L131 PetriNetUnfolder]: For 39/50 co-relation queries the response was YES. [2022-10-17 11:00:34,062 INFO L83 FinitePrefix]: Finished finitePrefix Result has 979 conditions, 657 events. 119/657 cut-off events. For 39/50 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 3096 event pairs, 44 based on Foata normal form. 0/567 useless extension candidates. Maximal degree in co-relation 972. Up to 97 conditions per place. [2022-10-17 11:00:34,067 INFO L137 encePairwiseOnDemand]: 162/174 looper letters, 63 selfloop transitions, 14 changer transitions 0/188 dead transitions. [2022-10-17 11:00:34,067 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 162 places, 188 transitions, 569 flow [2022-10-17 11:00:34,067 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-10-17 11:00:34,068 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-10-17 11:00:34,071 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1317 transitions. [2022-10-17 11:00:34,073 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.756896551724138 [2022-10-17 11:00:34,073 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1317 transitions. [2022-10-17 11:00:34,074 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1317 transitions. [2022-10-17 11:00:34,075 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-10-17 11:00:34,077 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1317 transitions. [2022-10-17 11:00:34,081 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 131.7) internal successors, (1317), 10 states have internal predecessors, (1317), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 11:00:34,087 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 174.0) internal successors, (1914), 11 states have internal predecessors, (1914), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 11:00:34,089 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 174.0) internal successors, (1914), 11 states have internal predecessors, (1914), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 11:00:34,089 INFO L175 Difference]: Start difference. First operand has 155 places, 152 transitions, 331 flow. Second operand 10 states and 1317 transitions. [2022-10-17 11:00:34,089 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 162 places, 188 transitions, 569 flow [2022-10-17 11:00:34,094 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 160 places, 188 transitions, 565 flow, removed 2 selfloop flow, removed 2 redundant places. [2022-10-17 11:00:34,101 INFO L231 Difference]: Finished difference. Result has 163 places, 157 transitions, 388 flow [2022-10-17 11:00:34,101 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=327, PETRI_DIFFERENCE_MINUEND_PLACES=151, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=152, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=140, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=388, PETRI_PLACES=163, PETRI_TRANSITIONS=157} [2022-10-17 11:00:34,104 INFO L287 CegarLoopForPetriNet]: 155 programPoint places, 8 predicate places. [2022-10-17 11:00:34,104 INFO L495 AbstractCegarLoop]: Abstraction has has 163 places, 157 transitions, 388 flow [2022-10-17 11:00:34,105 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 128.42857142857142) internal successors, (899), 7 states have internal predecessors, (899), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 11:00:34,106 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-10-17 11:00:34,106 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 11:00:34,106 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-10-17 11:00:34,106 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-10-17 11:00:34,107 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 11:00:34,108 INFO L85 PathProgramCache]: Analyzing trace with hash -506615031, now seen corresponding path program 1 times [2022-10-17 11:00:34,108 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 11:00:34,108 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [680466316] [2022-10-17 11:00:34,108 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 11:00:34,109 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 11:00:34,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 11:00:34,354 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 11:00:34,354 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 11:00:34,354 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [680466316] [2022-10-17 11:00:34,355 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [680466316] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 11:00:34,355 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 11:00:34,355 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-10-17 11:00:34,356 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1456209298] [2022-10-17 11:00:34,356 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 11:00:34,357 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-10-17 11:00:34,361 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 11:00:34,362 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-10-17 11:00:34,363 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2022-10-17 11:00:34,365 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 124 out of 174 [2022-10-17 11:00:34,367 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 163 places, 157 transitions, 388 flow. Second operand has 7 states, 7 states have (on average 128.42857142857142) internal successors, (899), 7 states have internal predecessors, (899), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 11:00:34,367 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-10-17 11:00:34,367 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 124 of 174 [2022-10-17 11:00:34,367 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-10-17 11:00:34,654 INFO L130 PetriNetUnfolder]: 105/629 cut-off events. [2022-10-17 11:00:34,654 INFO L131 PetriNetUnfolder]: For 88/97 co-relation queries the response was YES. [2022-10-17 11:00:34,657 INFO L83 FinitePrefix]: Finished finitePrefix Result has 983 conditions, 629 events. 105/629 cut-off events. For 88/97 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 2954 event pairs, 32 based on Foata normal form. 0/571 useless extension candidates. Maximal degree in co-relation 974. Up to 87 conditions per place. [2022-10-17 11:00:34,660 INFO L137 encePairwiseOnDemand]: 162/174 looper letters, 46 selfloop transitions, 11 changer transitions 19/187 dead transitions. [2022-10-17 11:00:34,660 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 172 places, 187 transitions, 611 flow [2022-10-17 11:00:34,661 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-10-17 11:00:34,661 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-10-17 11:00:34,664 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1316 transitions. [2022-10-17 11:00:34,665 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.7563218390804598 [2022-10-17 11:00:34,665 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1316 transitions. [2022-10-17 11:00:34,666 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1316 transitions. [2022-10-17 11:00:34,667 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-10-17 11:00:34,667 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1316 transitions. [2022-10-17 11:00:34,673 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 131.6) internal successors, (1316), 10 states have internal predecessors, (1316), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 11:00:34,683 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 174.0) internal successors, (1914), 11 states have internal predecessors, (1914), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 11:00:34,685 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 174.0) internal successors, (1914), 11 states have internal predecessors, (1914), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 11:00:34,685 INFO L175 Difference]: Start difference. First operand has 163 places, 157 transitions, 388 flow. Second operand 10 states and 1316 transitions. [2022-10-17 11:00:34,685 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 172 places, 187 transitions, 611 flow [2022-10-17 11:00:34,690 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 169 places, 187 transitions, 603 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-10-17 11:00:34,694 INFO L231 Difference]: Finished difference. Result has 170 places, 154 transitions, 393 flow [2022-10-17 11:00:34,695 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=380, PETRI_DIFFERENCE_MINUEND_PLACES=160, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=157, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=146, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=393, PETRI_PLACES=170, PETRI_TRANSITIONS=154} [2022-10-17 11:00:34,696 INFO L287 CegarLoopForPetriNet]: 155 programPoint places, 15 predicate places. [2022-10-17 11:00:34,697 INFO L495 AbstractCegarLoop]: Abstraction has has 170 places, 154 transitions, 393 flow [2022-10-17 11:00:34,699 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 128.42857142857142) internal successors, (899), 7 states have internal predecessors, (899), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 11:00:34,699 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-10-17 11:00:34,699 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 11:00:34,700 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-10-17 11:00:34,700 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-10-17 11:00:34,701 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 11:00:34,701 INFO L85 PathProgramCache]: Analyzing trace with hash 131354636, now seen corresponding path program 1 times [2022-10-17 11:00:34,702 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 11:00:34,703 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1691375946] [2022-10-17 11:00:34,703 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 11:00:34,703 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 11:00:34,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 11:00:34,958 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-10-17 11:00:34,959 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 11:00:34,959 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1691375946] [2022-10-17 11:00:34,959 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1691375946] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 11:00:34,959 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 11:00:34,960 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-10-17 11:00:34,960 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1434550942] [2022-10-17 11:00:34,960 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 11:00:34,961 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-10-17 11:00:34,961 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 11:00:34,961 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-10-17 11:00:34,962 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2022-10-17 11:00:34,964 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 124 out of 174 [2022-10-17 11:00:34,965 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 170 places, 154 transitions, 393 flow. Second operand has 7 states, 7 states have (on average 129.0) internal successors, (903), 7 states have internal predecessors, (903), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 11:00:34,966 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-10-17 11:00:34,966 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 124 of 174 [2022-10-17 11:00:34,966 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-10-17 11:00:35,268 INFO L130 PetriNetUnfolder]: 118/629 cut-off events. [2022-10-17 11:00:35,268 INFO L131 PetriNetUnfolder]: For 137/148 co-relation queries the response was YES. [2022-10-17 11:00:35,271 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1029 conditions, 629 events. 118/629 cut-off events. For 137/148 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 2979 event pairs, 44 based on Foata normal form. 7/589 useless extension candidates. Maximal degree in co-relation 1019. Up to 97 conditions per place. [2022-10-17 11:00:35,274 INFO L137 encePairwiseOnDemand]: 164/174 looper letters, 56 selfloop transitions, 10 changer transitions 0/177 dead transitions. [2022-10-17 11:00:35,275 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 173 places, 177 transitions, 587 flow [2022-10-17 11:00:35,275 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-10-17 11:00:35,275 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-10-17 11:00:35,279 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1057 transitions. [2022-10-17 11:00:35,280 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.7593390804597702 [2022-10-17 11:00:35,280 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1057 transitions. [2022-10-17 11:00:35,280 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1057 transitions. [2022-10-17 11:00:35,281 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-10-17 11:00:35,281 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1057 transitions. [2022-10-17 11:00:35,285 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 132.125) internal successors, (1057), 8 states have internal predecessors, (1057), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 11:00:35,289 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 174.0) internal successors, (1566), 9 states have internal predecessors, (1566), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 11:00:35,290 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 174.0) internal successors, (1566), 9 states have internal predecessors, (1566), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 11:00:35,290 INFO L175 Difference]: Start difference. First operand has 170 places, 154 transitions, 393 flow. Second operand 8 states and 1057 transitions. [2022-10-17 11:00:35,291 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 173 places, 177 transitions, 587 flow [2022-10-17 11:00:35,297 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 163 places, 177 transitions, 552 flow, removed 5 selfloop flow, removed 10 redundant places. [2022-10-17 11:00:35,301 INFO L231 Difference]: Finished difference. Result has 165 places, 156 transitions, 398 flow [2022-10-17 11:00:35,302 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=364, PETRI_DIFFERENCE_MINUEND_PLACES=156, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=154, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=144, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=398, PETRI_PLACES=165, PETRI_TRANSITIONS=156} [2022-10-17 11:00:35,305 INFO L287 CegarLoopForPetriNet]: 155 programPoint places, 10 predicate places. [2022-10-17 11:00:35,305 INFO L495 AbstractCegarLoop]: Abstraction has has 165 places, 156 transitions, 398 flow [2022-10-17 11:00:35,306 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 129.0) internal successors, (903), 7 states have internal predecessors, (903), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 11:00:35,306 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-10-17 11:00:35,307 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 11:00:35,307 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-10-17 11:00:35,307 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-10-17 11:00:35,308 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 11:00:35,309 INFO L85 PathProgramCache]: Analyzing trace with hash -679366620, now seen corresponding path program 1 times [2022-10-17 11:00:35,309 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 11:00:35,309 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1762573119] [2022-10-17 11:00:35,309 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 11:00:35,310 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 11:00:35,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 11:00:35,538 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-10-17 11:00:35,539 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 11:00:35,539 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1762573119] [2022-10-17 11:00:35,539 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1762573119] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 11:00:35,539 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 11:00:35,540 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-10-17 11:00:35,540 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [771739157] [2022-10-17 11:00:35,540 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 11:00:35,541 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-10-17 11:00:35,541 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 11:00:35,542 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-10-17 11:00:35,542 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2022-10-17 11:00:35,545 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 124 out of 174 [2022-10-17 11:00:35,546 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 165 places, 156 transitions, 398 flow. Second operand has 7 states, 7 states have (on average 129.0) internal successors, (903), 7 states have internal predecessors, (903), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 11:00:35,547 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-10-17 11:00:35,547 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 124 of 174 [2022-10-17 11:00:35,547 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-10-17 11:00:35,802 INFO L130 PetriNetUnfolder]: 104/601 cut-off events. [2022-10-17 11:00:35,802 INFO L131 PetriNetUnfolder]: For 112/121 co-relation queries the response was YES. [2022-10-17 11:00:35,805 INFO L83 FinitePrefix]: Finished finitePrefix Result has 953 conditions, 601 events. 104/601 cut-off events. For 112/121 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 2845 event pairs, 32 based on Foata normal form. 0/545 useless extension candidates. Maximal degree in co-relation 943. Up to 87 conditions per place. [2022-10-17 11:00:35,830 INFO L137 encePairwiseOnDemand]: 164/174 looper letters, 49 selfloop transitions, 9 changer transitions 7/176 dead transitions. [2022-10-17 11:00:35,830 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 172 places, 176 transitions, 579 flow [2022-10-17 11:00:35,830 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-10-17 11:00:35,831 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-10-17 11:00:35,834 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1056 transitions. [2022-10-17 11:00:35,835 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.7586206896551724 [2022-10-17 11:00:35,835 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1056 transitions. [2022-10-17 11:00:35,836 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1056 transitions. [2022-10-17 11:00:35,837 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-10-17 11:00:35,837 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1056 transitions. [2022-10-17 11:00:35,841 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 132.0) internal successors, (1056), 8 states have internal predecessors, (1056), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 11:00:35,845 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 174.0) internal successors, (1566), 9 states have internal predecessors, (1566), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 11:00:35,846 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 174.0) internal successors, (1566), 9 states have internal predecessors, (1566), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 11:00:35,847 INFO L175 Difference]: Start difference. First operand has 165 places, 156 transitions, 398 flow. Second operand 8 states and 1056 transitions. [2022-10-17 11:00:35,847 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 172 places, 176 transitions, 579 flow [2022-10-17 11:00:35,851 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 167 places, 176 transitions, 561 flow, removed 0 selfloop flow, removed 5 redundant places. [2022-10-17 11:00:35,856 INFO L231 Difference]: Finished difference. Result has 168 places, 155 transitions, 394 flow [2022-10-17 11:00:35,857 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=380, PETRI_DIFFERENCE_MINUEND_PLACES=160, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=156, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=147, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=394, PETRI_PLACES=168, PETRI_TRANSITIONS=155} [2022-10-17 11:00:35,860 INFO L287 CegarLoopForPetriNet]: 155 programPoint places, 13 predicate places. [2022-10-17 11:00:35,860 INFO L495 AbstractCegarLoop]: Abstraction has has 168 places, 155 transitions, 394 flow [2022-10-17 11:00:35,861 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 129.0) internal successors, (903), 7 states have internal predecessors, (903), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 11:00:35,861 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-10-17 11:00:35,861 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 11:00:35,862 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-10-17 11:00:35,862 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-10-17 11:00:35,863 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 11:00:35,863 INFO L85 PathProgramCache]: Analyzing trace with hash 2100548871, now seen corresponding path program 1 times [2022-10-17 11:00:35,863 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 11:00:35,863 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1882537128] [2022-10-17 11:00:35,864 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 11:00:35,864 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 11:00:35,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 11:00:36,344 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-10-17 11:00:36,344 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 11:00:36,345 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1882537128] [2022-10-17 11:00:36,345 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1882537128] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-17 11:00:36,351 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1740997966] [2022-10-17 11:00:36,351 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 11:00:36,352 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-17 11:00:36,352 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4616c7e-5057-420b-a55c-693832399912/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 11:00:36,356 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4616c7e-5057-420b-a55c-693832399912/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-17 11:00:36,363 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4616c7e-5057-420b-a55c-693832399912/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-10-17 11:00:36,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 11:00:36,484 INFO L263 TraceCheckSpWp]: Trace formula consists of 298 conjuncts, 10 conjunts are in the unsatisfiable core [2022-10-17 11:00:36,498 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-17 11:00:37,124 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-10-17 11:00:37,124 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-17 11:00:37,780 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-10-17 11:00:37,780 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1740997966] provided 1 perfect and 1 imperfect interpolant sequences [2022-10-17 11:00:37,781 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-10-17 11:00:37,781 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [13, 11] total 30 [2022-10-17 11:00:37,781 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [469820760] [2022-10-17 11:00:37,781 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 11:00:37,782 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-10-17 11:00:37,782 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 11:00:37,783 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-10-17 11:00:37,784 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=203, Invalid=667, Unknown=0, NotChecked=0, Total=870 [2022-10-17 11:00:37,787 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 122 out of 174 [2022-10-17 11:00:37,789 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 168 places, 155 transitions, 394 flow. Second operand has 11 states, 11 states have (on average 125.36363636363636) internal successors, (1379), 11 states have internal predecessors, (1379), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 11:00:37,789 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-10-17 11:00:37,790 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 122 of 174 [2022-10-17 11:00:37,790 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-10-17 11:00:38,381 INFO L130 PetriNetUnfolder]: 89/571 cut-off events. [2022-10-17 11:00:38,381 INFO L131 PetriNetUnfolder]: For 133/133 co-relation queries the response was YES. [2022-10-17 11:00:38,385 INFO L83 FinitePrefix]: Finished finitePrefix Result has 917 conditions, 571 events. 89/571 cut-off events. For 133/133 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 2674 event pairs, 24 based on Foata normal form. 6/540 useless extension candidates. Maximal degree in co-relation 906. Up to 71 conditions per place. [2022-10-17 11:00:38,388 INFO L137 encePairwiseOnDemand]: 160/174 looper letters, 49 selfloop transitions, 15 changer transitions 0/173 dead transitions. [2022-10-17 11:00:38,389 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 179 places, 173 transitions, 574 flow [2022-10-17 11:00:38,389 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-10-17 11:00:38,389 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2022-10-17 11:00:38,394 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 1770 transitions. [2022-10-17 11:00:38,396 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.7266009852216748 [2022-10-17 11:00:38,396 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 1770 transitions. [2022-10-17 11:00:38,397 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 1770 transitions. [2022-10-17 11:00:38,398 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-10-17 11:00:38,399 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 1770 transitions. [2022-10-17 11:00:38,404 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 126.42857142857143) internal successors, (1770), 14 states have internal predecessors, (1770), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 11:00:38,411 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 174.0) internal successors, (2610), 15 states have internal predecessors, (2610), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 11:00:38,413 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 174.0) internal successors, (2610), 15 states have internal predecessors, (2610), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 11:00:38,413 INFO L175 Difference]: Start difference. First operand has 168 places, 155 transitions, 394 flow. Second operand 14 states and 1770 transitions. [2022-10-17 11:00:38,413 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 179 places, 173 transitions, 574 flow [2022-10-17 11:00:38,416 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 171 places, 173 transitions, 544 flow, removed 5 selfloop flow, removed 8 redundant places. [2022-10-17 11:00:38,420 INFO L231 Difference]: Finished difference. Result has 175 places, 158 transitions, 426 flow [2022-10-17 11:00:38,421 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=370, PETRI_DIFFERENCE_MINUEND_PLACES=158, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=155, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=140, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=426, PETRI_PLACES=175, PETRI_TRANSITIONS=158} [2022-10-17 11:00:38,422 INFO L287 CegarLoopForPetriNet]: 155 programPoint places, 20 predicate places. [2022-10-17 11:00:38,422 INFO L495 AbstractCegarLoop]: Abstraction has has 175 places, 158 transitions, 426 flow [2022-10-17 11:00:38,423 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 125.36363636363636) internal successors, (1379), 11 states have internal predecessors, (1379), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 11:00:38,423 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-10-17 11:00:38,423 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 11:00:38,461 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4616c7e-5057-420b-a55c-693832399912/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-10-17 11:00:38,639 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4616c7e-5057-420b-a55c-693832399912/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2022-10-17 11:00:38,640 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-10-17 11:00:38,640 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 11:00:38,640 INFO L85 PathProgramCache]: Analyzing trace with hash 826634285, now seen corresponding path program 1 times [2022-10-17 11:00:38,641 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 11:00:38,641 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [65089134] [2022-10-17 11:00:38,641 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 11:00:38,641 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 11:00:38,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 11:00:39,089 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 11:00:39,089 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 11:00:39,090 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [65089134] [2022-10-17 11:00:39,090 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [65089134] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-17 11:00:39,090 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2124238662] [2022-10-17 11:00:39,090 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 11:00:39,090 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-17 11:00:39,091 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4616c7e-5057-420b-a55c-693832399912/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 11:00:39,095 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4616c7e-5057-420b-a55c-693832399912/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-17 11:00:39,111 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4616c7e-5057-420b-a55c-693832399912/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-10-17 11:00:39,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 11:00:39,214 INFO L263 TraceCheckSpWp]: Trace formula consists of 298 conjuncts, 10 conjunts are in the unsatisfiable core [2022-10-17 11:00:39,232 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-17 11:00:39,896 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 11:00:39,896 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-17 11:00:40,643 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 11:00:40,644 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2124238662] provided 1 perfect and 1 imperfect interpolant sequences [2022-10-17 11:00:40,644 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-10-17 11:00:40,644 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [13, 11] total 30 [2022-10-17 11:00:40,645 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1151206971] [2022-10-17 11:00:40,645 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 11:00:40,645 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-10-17 11:00:40,646 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 11:00:40,646 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-10-17 11:00:40,647 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=203, Invalid=667, Unknown=0, NotChecked=0, Total=870 [2022-10-17 11:00:40,649 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 122 out of 174 [2022-10-17 11:00:40,652 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 175 places, 158 transitions, 426 flow. Second operand has 11 states, 11 states have (on average 125.36363636363636) internal successors, (1379), 11 states have internal predecessors, (1379), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 11:00:40,652 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-10-17 11:00:40,652 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 122 of 174 [2022-10-17 11:00:40,652 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-10-17 11:00:41,223 INFO L130 PetriNetUnfolder]: 76/555 cut-off events. [2022-10-17 11:00:41,223 INFO L131 PetriNetUnfolder]: For 162/162 co-relation queries the response was YES. [2022-10-17 11:00:41,226 INFO L83 FinitePrefix]: Finished finitePrefix Result has 922 conditions, 555 events. 76/555 cut-off events. For 162/162 co-relation queries the response was YES. Maximal size of possible extension queue 29. Compared 2710 event pairs, 27 based on Foata normal form. 0/512 useless extension candidates. Maximal degree in co-relation 910. Up to 80 conditions per place. [2022-10-17 11:00:41,228 INFO L137 encePairwiseOnDemand]: 160/174 looper letters, 50 selfloop transitions, 15 changer transitions 0/174 dead transitions. [2022-10-17 11:00:41,229 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 188 places, 174 transitions, 610 flow [2022-10-17 11:00:41,229 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-10-17 11:00:41,229 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2022-10-17 11:00:41,234 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 1768 transitions. [2022-10-17 11:00:41,235 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.7257799671592775 [2022-10-17 11:00:41,236 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 1768 transitions. [2022-10-17 11:00:41,236 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 1768 transitions. [2022-10-17 11:00:41,237 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-10-17 11:00:41,237 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 1768 transitions. [2022-10-17 11:00:41,243 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 126.28571428571429) internal successors, (1768), 14 states have internal predecessors, (1768), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 11:00:41,249 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 174.0) internal successors, (2610), 15 states have internal predecessors, (2610), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 11:00:41,250 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 174.0) internal successors, (2610), 15 states have internal predecessors, (2610), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 11:00:41,251 INFO L175 Difference]: Start difference. First operand has 175 places, 158 transitions, 426 flow. Second operand 14 states and 1768 transitions. [2022-10-17 11:00:41,251 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 188 places, 174 transitions, 610 flow [2022-10-17 11:00:41,275 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 180 places, 174 transitions, 591 flow, removed 1 selfloop flow, removed 8 redundant places. [2022-10-17 11:00:41,279 INFO L231 Difference]: Finished difference. Result has 182 places, 159 transitions, 451 flow [2022-10-17 11:00:41,279 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=407, PETRI_DIFFERENCE_MINUEND_PLACES=167, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=158, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=143, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=451, PETRI_PLACES=182, PETRI_TRANSITIONS=159} [2022-10-17 11:00:41,281 INFO L287 CegarLoopForPetriNet]: 155 programPoint places, 27 predicate places. [2022-10-17 11:00:41,282 INFO L495 AbstractCegarLoop]: Abstraction has has 182 places, 159 transitions, 451 flow [2022-10-17 11:00:41,283 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 125.36363636363636) internal successors, (1379), 11 states have internal predecessors, (1379), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 11:00:41,283 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-10-17 11:00:41,283 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 11:00:41,321 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4616c7e-5057-420b-a55c-693832399912/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-10-17 11:00:41,498 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4616c7e-5057-420b-a55c-693832399912/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-17 11:00:41,499 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-10-17 11:00:41,499 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 11:00:41,499 INFO L85 PathProgramCache]: Analyzing trace with hash 890685060, now seen corresponding path program 1 times [2022-10-17 11:00:41,500 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 11:00:41,500 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1608901745] [2022-10-17 11:00:41,500 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 11:00:41,500 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 11:00:41,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 11:00:42,767 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-10-17 11:00:42,767 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 11:00:42,768 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1608901745] [2022-10-17 11:00:42,768 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1608901745] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-17 11:00:42,768 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1221622486] [2022-10-17 11:00:42,768 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 11:00:42,769 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-17 11:00:42,769 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4616c7e-5057-420b-a55c-693832399912/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 11:00:42,771 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4616c7e-5057-420b-a55c-693832399912/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-17 11:00:42,795 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4616c7e-5057-420b-a55c-693832399912/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-10-17 11:00:42,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 11:00:42,883 INFO L263 TraceCheckSpWp]: Trace formula consists of 306 conjuncts, 35 conjunts are in the unsatisfiable core [2022-10-17 11:00:42,890 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-17 11:00:43,665 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-10-17 11:00:43,682 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-10-17 11:00:43,682 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-17 11:00:43,885 INFO L356 Elim1Store]: treesize reduction 32, result has 62.4 percent of original size [2022-10-17 11:00:43,887 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 40 treesize of output 60 [2022-10-17 11:00:44,125 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-10-17 11:00:44,126 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1221622486] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-17 11:00:44,126 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-17 11:00:44,126 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 19, 9] total 27 [2022-10-17 11:00:44,127 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1482679591] [2022-10-17 11:00:44,127 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-17 11:00:44,128 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-10-17 11:00:44,128 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 11:00:44,128 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-10-17 11:00:44,129 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=120, Invalid=582, Unknown=0, NotChecked=0, Total=702 [2022-10-17 11:00:44,134 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 104 out of 174 [2022-10-17 11:00:44,138 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 182 places, 159 transitions, 451 flow. Second operand has 27 states, 27 states have (on average 107.62962962962963) internal successors, (2906), 27 states have internal predecessors, (2906), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 11:00:44,138 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-10-17 11:00:44,138 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 104 of 174 [2022-10-17 11:00:44,138 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-10-17 11:00:46,806 INFO L130 PetriNetUnfolder]: 2823/5593 cut-off events. [2022-10-17 11:00:46,807 INFO L131 PetriNetUnfolder]: For 2579/2579 co-relation queries the response was YES. [2022-10-17 11:00:46,828 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11960 conditions, 5593 events. 2823/5593 cut-off events. For 2579/2579 co-relation queries the response was YES. Maximal size of possible extension queue 277. Compared 42127 event pairs, 189 based on Foata normal form. 0/5274 useless extension candidates. Maximal degree in co-relation 11947. Up to 1582 conditions per place. [2022-10-17 11:00:46,860 INFO L137 encePairwiseOnDemand]: 142/174 looper letters, 297 selfloop transitions, 100 changer transitions 4/494 dead transitions. [2022-10-17 11:00:46,860 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 226 places, 494 transitions, 2156 flow [2022-10-17 11:00:46,861 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2022-10-17 11:00:46,861 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2022-10-17 11:00:46,875 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 5080 transitions. [2022-10-17 11:00:46,878 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.648786717752235 [2022-10-17 11:00:46,879 INFO L72 ComplementDD]: Start complementDD. Operand 45 states and 5080 transitions. [2022-10-17 11:00:46,879 INFO L73 IsDeterministic]: Start isDeterministic. Operand 45 states and 5080 transitions. [2022-10-17 11:00:46,883 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-10-17 11:00:46,883 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 45 states and 5080 transitions. [2022-10-17 11:00:46,898 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 46 states, 45 states have (on average 112.88888888888889) internal successors, (5080), 45 states have internal predecessors, (5080), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 11:00:46,916 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 46 states, 46 states have (on average 174.0) internal successors, (8004), 46 states have internal predecessors, (8004), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 11:00:46,929 INFO L81 ComplementDD]: Finished complementDD. Result has 46 states, 46 states have (on average 174.0) internal successors, (8004), 46 states have internal predecessors, (8004), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 11:00:46,937 INFO L175 Difference]: Start difference. First operand has 182 places, 159 transitions, 451 flow. Second operand 45 states and 5080 transitions. [2022-10-17 11:00:46,937 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 226 places, 494 transitions, 2156 flow [2022-10-17 11:00:46,946 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 215 places, 494 transitions, 2114 flow, removed 4 selfloop flow, removed 11 redundant places. [2022-10-17 11:00:46,954 INFO L231 Difference]: Finished difference. Result has 238 places, 244 transitions, 1100 flow [2022-10-17 11:00:46,955 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=422, PETRI_DIFFERENCE_MINUEND_PLACES=171, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=159, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=125, PETRI_DIFFERENCE_SUBTRAHEND_STATES=45, PETRI_FLOW=1100, PETRI_PLACES=238, PETRI_TRANSITIONS=244} [2022-10-17 11:00:46,956 INFO L287 CegarLoopForPetriNet]: 155 programPoint places, 83 predicate places. [2022-10-17 11:00:46,956 INFO L495 AbstractCegarLoop]: Abstraction has has 238 places, 244 transitions, 1100 flow [2022-10-17 11:00:46,958 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 107.62962962962963) internal successors, (2906), 27 states have internal predecessors, (2906), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 11:00:46,958 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-10-17 11:00:46,958 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 11:00:46,990 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4616c7e-5057-420b-a55c-693832399912/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-10-17 11:00:47,183 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4616c7e-5057-420b-a55c-693832399912/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-17 11:00:47,183 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-10-17 11:00:47,183 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 11:00:47,184 INFO L85 PathProgramCache]: Analyzing trace with hash -1532927742, now seen corresponding path program 1 times [2022-10-17 11:00:47,184 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 11:00:47,184 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [382383321] [2022-10-17 11:00:47,184 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 11:00:47,184 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 11:00:47,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 11:00:48,442 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-10-17 11:00:48,442 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 11:00:48,442 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [382383321] [2022-10-17 11:00:48,442 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [382383321] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 11:00:48,443 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 11:00:48,443 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-10-17 11:00:48,443 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1246701837] [2022-10-17 11:00:48,443 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 11:00:48,444 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-10-17 11:00:48,444 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 11:00:48,445 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-10-17 11:00:48,445 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=260, Unknown=0, NotChecked=0, Total=342 [2022-10-17 11:00:48,449 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 104 out of 174 [2022-10-17 11:00:48,451 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 238 places, 244 transitions, 1100 flow. Second operand has 19 states, 19 states have (on average 106.6842105263158) internal successors, (2027), 19 states have internal predecessors, (2027), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 11:00:48,452 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-10-17 11:00:48,452 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 104 of 174 [2022-10-17 11:00:48,452 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-10-17 11:00:51,110 INFO L130 PetriNetUnfolder]: 2917/5841 cut-off events. [2022-10-17 11:00:51,111 INFO L131 PetriNetUnfolder]: For 13467/13491 co-relation queries the response was YES. [2022-10-17 11:00:51,174 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17831 conditions, 5841 events. 2917/5841 cut-off events. For 13467/13491 co-relation queries the response was YES. Maximal size of possible extension queue 284. Compared 44689 event pairs, 781 based on Foata normal form. 19/5820 useless extension candidates. Maximal degree in co-relation 17795. Up to 2871 conditions per place. [2022-10-17 11:00:51,223 INFO L137 encePairwiseOnDemand]: 143/174 looper letters, 186 selfloop transitions, 62 changer transitions 45/386 dead transitions. [2022-10-17 11:00:51,224 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 268 places, 386 transitions, 2356 flow [2022-10-17 11:00:51,224 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2022-10-17 11:00:51,225 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2022-10-17 11:00:51,233 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 3451 transitions. [2022-10-17 11:00:51,236 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.6397849462365591 [2022-10-17 11:00:51,236 INFO L72 ComplementDD]: Start complementDD. Operand 31 states and 3451 transitions. [2022-10-17 11:00:51,237 INFO L73 IsDeterministic]: Start isDeterministic. Operand 31 states and 3451 transitions. [2022-10-17 11:00:51,242 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-10-17 11:00:51,242 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 31 states and 3451 transitions. [2022-10-17 11:00:51,253 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 32 states, 31 states have (on average 111.3225806451613) internal successors, (3451), 31 states have internal predecessors, (3451), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 11:00:51,265 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 32 states, 32 states have (on average 174.0) internal successors, (5568), 32 states have internal predecessors, (5568), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 11:00:51,268 INFO L81 ComplementDD]: Finished complementDD. Result has 32 states, 32 states have (on average 174.0) internal successors, (5568), 32 states have internal predecessors, (5568), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 11:00:51,268 INFO L175 Difference]: Start difference. First operand has 238 places, 244 transitions, 1100 flow. Second operand 31 states and 3451 transitions. [2022-10-17 11:00:51,269 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 268 places, 386 transitions, 2356 flow [2022-10-17 11:00:51,529 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 252 places, 386 transitions, 2289 flow, removed 3 selfloop flow, removed 16 redundant places. [2022-10-17 11:00:51,537 INFO L231 Difference]: Finished difference. Result has 258 places, 261 transitions, 1308 flow [2022-10-17 11:00:51,538 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=1039, PETRI_DIFFERENCE_MINUEND_PLACES=222, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=244, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=49, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=194, PETRI_DIFFERENCE_SUBTRAHEND_STATES=31, PETRI_FLOW=1308, PETRI_PLACES=258, PETRI_TRANSITIONS=261} [2022-10-17 11:00:51,539 INFO L287 CegarLoopForPetriNet]: 155 programPoint places, 103 predicate places. [2022-10-17 11:00:51,540 INFO L495 AbstractCegarLoop]: Abstraction has has 258 places, 261 transitions, 1308 flow [2022-10-17 11:00:51,541 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 106.6842105263158) internal successors, (2027), 19 states have internal predecessors, (2027), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 11:00:51,541 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-10-17 11:00:51,541 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 11:00:51,542 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-10-17 11:00:51,543 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-10-17 11:00:51,543 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 11:00:51,544 INFO L85 PathProgramCache]: Analyzing trace with hash 685562106, now seen corresponding path program 2 times [2022-10-17 11:00:51,544 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 11:00:51,544 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1153779307] [2022-10-17 11:00:51,544 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 11:00:51,545 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 11:00:51,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 11:00:52,798 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-10-17 11:00:52,799 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 11:00:52,799 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1153779307] [2022-10-17 11:00:52,799 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1153779307] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 11:00:52,799 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 11:00:52,799 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-10-17 11:00:52,799 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [923031669] [2022-10-17 11:00:52,799 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 11:00:52,800 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-10-17 11:00:52,800 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 11:00:52,801 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-10-17 11:00:52,801 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=298, Unknown=0, NotChecked=0, Total=380 [2022-10-17 11:00:52,804 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 104 out of 174 [2022-10-17 11:00:52,807 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 258 places, 261 transitions, 1308 flow. Second operand has 20 states, 20 states have (on average 106.55) internal successors, (2131), 20 states have internal predecessors, (2131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 11:00:52,807 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-10-17 11:00:52,807 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 104 of 174 [2022-10-17 11:00:52,807 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-10-17 11:00:55,264 INFO L130 PetriNetUnfolder]: 3282/6545 cut-off events. [2022-10-17 11:00:55,264 INFO L131 PetriNetUnfolder]: For 19137/19173 co-relation queries the response was YES. [2022-10-17 11:00:55,353 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21347 conditions, 6545 events. 3282/6545 cut-off events. For 19137/19173 co-relation queries the response was YES. Maximal size of possible extension queue 338. Compared 50935 event pairs, 727 based on Foata normal form. 36/6537 useless extension candidates. Maximal degree in co-relation 21304. Up to 2937 conditions per place. [2022-10-17 11:00:55,400 INFO L137 encePairwiseOnDemand]: 143/174 looper letters, 246 selfloop transitions, 101 changer transitions 1/441 dead transitions. [2022-10-17 11:00:55,400 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 282 places, 441 transitions, 3086 flow [2022-10-17 11:00:55,401 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2022-10-17 11:00:55,401 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2022-10-17 11:00:55,407 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 3469 transitions. [2022-10-17 11:00:55,409 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.6431219873934001 [2022-10-17 11:00:55,410 INFO L72 ComplementDD]: Start complementDD. Operand 31 states and 3469 transitions. [2022-10-17 11:00:55,410 INFO L73 IsDeterministic]: Start isDeterministic. Operand 31 states and 3469 transitions. [2022-10-17 11:00:55,412 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-10-17 11:00:55,412 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 31 states and 3469 transitions. [2022-10-17 11:00:55,420 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 32 states, 31 states have (on average 111.90322580645162) internal successors, (3469), 31 states have internal predecessors, (3469), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 11:00:55,430 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 32 states, 32 states have (on average 174.0) internal successors, (5568), 32 states have internal predecessors, (5568), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 11:00:55,433 INFO L81 ComplementDD]: Finished complementDD. Result has 32 states, 32 states have (on average 174.0) internal successors, (5568), 32 states have internal predecessors, (5568), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 11:00:55,433 INFO L175 Difference]: Start difference. First operand has 258 places, 261 transitions, 1308 flow. Second operand 31 states and 3469 transitions. [2022-10-17 11:00:55,433 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 282 places, 441 transitions, 3086 flow [2022-10-17 11:00:55,660 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 264 places, 441 transitions, 2980 flow, removed 37 selfloop flow, removed 18 redundant places. [2022-10-17 11:00:55,681 INFO L231 Difference]: Finished difference. Result has 277 places, 303 transitions, 1946 flow [2022-10-17 11:00:55,682 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=1250, PETRI_DIFFERENCE_MINUEND_PLACES=234, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=261, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=62, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=183, PETRI_DIFFERENCE_SUBTRAHEND_STATES=31, PETRI_FLOW=1946, PETRI_PLACES=277, PETRI_TRANSITIONS=303} [2022-10-17 11:00:55,683 INFO L287 CegarLoopForPetriNet]: 155 programPoint places, 122 predicate places. [2022-10-17 11:00:55,683 INFO L495 AbstractCegarLoop]: Abstraction has has 277 places, 303 transitions, 1946 flow [2022-10-17 11:00:55,684 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 106.55) internal successors, (2131), 20 states have internal predecessors, (2131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 11:00:55,684 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-10-17 11:00:55,684 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 11:00:55,684 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-10-17 11:00:55,685 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-10-17 11:00:55,685 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 11:00:55,686 INFO L85 PathProgramCache]: Analyzing trace with hash 936929790, now seen corresponding path program 3 times [2022-10-17 11:00:55,686 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 11:00:55,686 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1297873454] [2022-10-17 11:00:55,686 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 11:00:55,687 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 11:00:55,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 11:00:56,851 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-10-17 11:00:56,851 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 11:00:56,852 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1297873454] [2022-10-17 11:00:56,852 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1297873454] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 11:00:56,852 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 11:00:56,852 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-10-17 11:00:56,852 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [657179717] [2022-10-17 11:00:56,852 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 11:00:56,853 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-10-17 11:00:56,853 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 11:00:56,853 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-10-17 11:00:56,854 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=261, Unknown=0, NotChecked=0, Total=342 [2022-10-17 11:00:56,856 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 104 out of 174 [2022-10-17 11:00:56,859 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 277 places, 303 transitions, 1946 flow. Second operand has 19 states, 19 states have (on average 106.6842105263158) internal successors, (2027), 19 states have internal predecessors, (2027), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 11:00:56,859 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-10-17 11:00:56,859 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 104 of 174 [2022-10-17 11:00:56,859 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand