./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/pthread-wmm/mix047_power.oepc_pso.oepc_rmo.oepc.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 6b4ec56b Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c28b9ef2-4cf6-4fd6-a81e-42694980ff07/bin/uautomizer-ug76WZFUDN/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c28b9ef2-4cf6-4fd6-a81e-42694980ff07/bin/uautomizer-ug76WZFUDN/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c28b9ef2-4cf6-4fd6-a81e-42694980ff07/bin/uautomizer-ug76WZFUDN/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c28b9ef2-4cf6-4fd6-a81e-42694980ff07/bin/uautomizer-ug76WZFUDN/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread-wmm/mix047_power.oepc_pso.oepc_rmo.oepc.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c28b9ef2-4cf6-4fd6-a81e-42694980ff07/bin/uautomizer-ug76WZFUDN/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c28b9ef2-4cf6-4fd6-a81e-42694980ff07/bin/uautomizer-ug76WZFUDN --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 dcc3fad0768415d67ba0b5226238487b935d262c55e83ab1790d239680fbb73d --- 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-6b4ec56 [2022-11-20 09:27:07,971 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-20 09:27:07,973 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-20 09:27:08,009 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-20 09:27:08,009 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-20 09:27:08,013 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-20 09:27:08,016 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-20 09:27:08,020 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-20 09:27:08,022 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-20 09:27:08,029 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-20 09:27:08,030 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-20 09:27:08,033 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-20 09:27:08,033 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-20 09:27:08,038 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-20 09:27:08,039 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-20 09:27:08,042 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-20 09:27:08,043 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-20 09:27:08,044 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-20 09:27:08,046 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-20 09:27:08,050 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-20 09:27:08,066 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-20 09:27:08,073 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-20 09:27:08,074 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-20 09:27:08,075 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-20 09:27:08,110 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-20 09:27:08,120 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-20 09:27:08,120 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-20 09:27:08,122 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-20 09:27:08,123 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-20 09:27:08,126 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-20 09:27:08,127 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-20 09:27:08,128 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-20 09:27:08,135 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-20 09:27:08,136 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-20 09:27:08,138 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-20 09:27:08,138 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-20 09:27:08,139 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-20 09:27:08,139 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-20 09:27:08,156 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-20 09:27:08,175 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-20 09:27:08,176 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-20 09:27:08,177 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c28b9ef2-4cf6-4fd6-a81e-42694980ff07/bin/uautomizer-ug76WZFUDN/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-11-20 09:27:08,226 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-20 09:27:08,227 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-20 09:27:08,228 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-20 09:27:08,228 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-20 09:27:08,229 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-20 09:27:08,230 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-20 09:27:08,230 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-20 09:27:08,231 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-20 09:27:08,231 INFO L138 SettingsManager]: * Use SBE=true [2022-11-20 09:27:08,231 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-20 09:27:08,232 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-20 09:27:08,233 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-20 09:27:08,233 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-20 09:27:08,233 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-20 09:27:08,233 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-20 09:27:08,234 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-20 09:27:08,234 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-20 09:27:08,234 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-20 09:27:08,234 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-20 09:27:08,234 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-20 09:27:08,235 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-20 09:27:08,235 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-20 09:27:08,235 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-20 09:27:08,235 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-20 09:27:08,236 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 09:27:08,236 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-20 09:27:08,236 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-20 09:27:08,236 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-20 09:27:08,237 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-20 09:27:08,237 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-20 09:27:08,237 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-20 09:27:08,237 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-20 09:27:08,238 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-20 09:27:08,238 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_c28b9ef2-4cf6-4fd6-a81e-42694980ff07/bin/uautomizer-ug76WZFUDN/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c28b9ef2-4cf6-4fd6-a81e-42694980ff07/bin/uautomizer-ug76WZFUDN Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> dcc3fad0768415d67ba0b5226238487b935d262c55e83ab1790d239680fbb73d [2022-11-20 09:27:08,497 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-20 09:27:08,520 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-20 09:27:08,523 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-20 09:27:08,524 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-20 09:27:08,525 INFO L275 PluginConnector]: CDTParser initialized [2022-11-20 09:27:08,526 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c28b9ef2-4cf6-4fd6-a81e-42694980ff07/bin/uautomizer-ug76WZFUDN/../../sv-benchmarks/c/pthread-wmm/mix047_power.oepc_pso.oepc_rmo.oepc.i [2022-11-20 09:27:11,646 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-20 09:27:11,962 INFO L351 CDTParser]: Found 1 translation units. [2022-11-20 09:27:11,963 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c28b9ef2-4cf6-4fd6-a81e-42694980ff07/sv-benchmarks/c/pthread-wmm/mix047_power.oepc_pso.oepc_rmo.oepc.i [2022-11-20 09:27:11,978 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c28b9ef2-4cf6-4fd6-a81e-42694980ff07/bin/uautomizer-ug76WZFUDN/data/d1ffd7449/7d464c2710ae4857b6d5f3eb1726190a/FLAGe19a60363 [2022-11-20 09:27:11,994 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c28b9ef2-4cf6-4fd6-a81e-42694980ff07/bin/uautomizer-ug76WZFUDN/data/d1ffd7449/7d464c2710ae4857b6d5f3eb1726190a [2022-11-20 09:27:11,997 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-20 09:27:11,998 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-20 09:27:12,000 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-20 09:27:12,000 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-20 09:27:12,010 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-20 09:27:12,011 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 09:27:11" (1/1) ... [2022-11-20 09:27:12,012 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@42281a27 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:27:12, skipping insertion in model container [2022-11-20 09:27:12,013 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 09:27:11" (1/1) ... [2022-11-20 09:27:12,021 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-20 09:27:12,087 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-20 09:27:12,244 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c28b9ef2-4cf6-4fd6-a81e-42694980ff07/sv-benchmarks/c/pthread-wmm/mix047_power.oepc_pso.oepc_rmo.oepc.i[969,982] [2022-11-20 09:27:12,589 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 09:27:12,606 INFO L203 MainTranslator]: Completed pre-run [2022-11-20 09:27:12,620 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c28b9ef2-4cf6-4fd6-a81e-42694980ff07/sv-benchmarks/c/pthread-wmm/mix047_power.oepc_pso.oepc_rmo.oepc.i[969,982] [2022-11-20 09:27:12,704 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 09:27:12,748 INFO L208 MainTranslator]: Completed translation [2022-11-20 09:27:12,749 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:27:12 WrapperNode [2022-11-20 09:27:12,749 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-20 09:27:12,751 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-20 09:27:12,751 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-20 09:27:12,751 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-20 09:27:12,759 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:27:12" (1/1) ... [2022-11-20 09:27:12,798 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:27:12" (1/1) ... [2022-11-20 09:27:12,843 INFO L138 Inliner]: procedures = 177, calls = 71, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 144 [2022-11-20 09:27:12,843 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-20 09:27:12,844 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-20 09:27:12,844 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-20 09:27:12,844 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-20 09:27:12,858 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:27:12" (1/1) ... [2022-11-20 09:27:12,858 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:27:12" (1/1) ... [2022-11-20 09:27:12,873 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:27:12" (1/1) ... [2022-11-20 09:27:12,877 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:27:12" (1/1) ... [2022-11-20 09:27:12,885 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:27:12" (1/1) ... [2022-11-20 09:27:12,901 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:27:12" (1/1) ... [2022-11-20 09:27:12,904 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:27:12" (1/1) ... [2022-11-20 09:27:12,905 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:27:12" (1/1) ... [2022-11-20 09:27:12,909 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-20 09:27:12,917 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-20 09:27:12,917 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-20 09:27:12,918 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-20 09:27:12,918 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:27:12" (1/1) ... [2022-11-20 09:27:12,925 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 09:27:12,938 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c28b9ef2-4cf6-4fd6-a81e-42694980ff07/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 09:27:12,953 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c28b9ef2-4cf6-4fd6-a81e-42694980ff07/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-20 09:27:12,980 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c28b9ef2-4cf6-4fd6-a81e-42694980ff07/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-20 09:27:13,001 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-20 09:27:13,001 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-11-20 09:27:13,001 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-20 09:27:13,002 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-20 09:27:13,002 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-20 09:27:13,003 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2022-11-20 09:27:13,003 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2022-11-20 09:27:13,003 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2022-11-20 09:27:13,004 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2022-11-20 09:27:13,004 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2022-11-20 09:27:13,005 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2022-11-20 09:27:13,005 INFO L130 BoogieDeclarations]: Found specification of procedure P3 [2022-11-20 09:27:13,005 INFO L138 BoogieDeclarations]: Found implementation of procedure P3 [2022-11-20 09:27:13,005 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-20 09:27:13,006 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-11-20 09:27:13,006 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-20 09:27:13,006 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-20 09:27:13,008 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-20 09:27:13,253 INFO L235 CfgBuilder]: Building ICFG [2022-11-20 09:27:13,255 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-20 09:27:13,772 INFO L276 CfgBuilder]: Performing block encoding [2022-11-20 09:27:14,007 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-20 09:27:14,008 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-11-20 09:27:14,011 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 09:27:14 BoogieIcfgContainer [2022-11-20 09:27:14,011 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-20 09:27:14,013 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-20 09:27:14,013 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-20 09:27:14,017 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-20 09:27:14,017 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 09:27:11" (1/3) ... [2022-11-20 09:27:14,018 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1debd114 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 09:27:14, skipping insertion in model container [2022-11-20 09:27:14,019 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:27:12" (2/3) ... [2022-11-20 09:27:14,019 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1debd114 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 09:27:14, skipping insertion in model container [2022-11-20 09:27:14,019 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 09:27:14" (3/3) ... [2022-11-20 09:27:14,021 INFO L112 eAbstractionObserver]: Analyzing ICFG mix047_power.oepc_pso.oepc_rmo.oepc.i [2022-11-20 09:27:14,030 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-20 09:27:14,042 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-20 09:27:14,043 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-11-20 09:27:14,043 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-20 09:27:14,137 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-11-20 09:27:14,187 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 149 places, 138 transitions, 296 flow [2022-11-20 09:27:14,246 INFO L130 PetriNetUnfolder]: 2/134 cut-off events. [2022-11-20 09:27:14,246 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-20 09:27:14,253 INFO L83 FinitePrefix]: Finished finitePrefix Result has 147 conditions, 134 events. 2/134 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 73 event pairs, 0 based on Foata normal form. 0/130 useless extension candidates. Maximal degree in co-relation 93. Up to 2 conditions per place. [2022-11-20 09:27:14,254 INFO L82 GeneralOperation]: Start removeDead. Operand has 149 places, 138 transitions, 296 flow [2022-11-20 09:27:14,259 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 145 places, 134 transitions, 280 flow [2022-11-20 09:27:14,270 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-20 09:27:14,277 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;@2d4ce249, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-20 09:27:14,278 INFO L358 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2022-11-20 09:27:14,288 INFO L130 PetriNetUnfolder]: 0/50 cut-off events. [2022-11-20 09:27:14,288 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-20 09:27:14,288 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 09:27:14,289 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 09:27:14,290 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting P0Err0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-11-20 09:27:14,295 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 09:27:14,295 INFO L85 PathProgramCache]: Analyzing trace with hash -1840235639, now seen corresponding path program 1 times [2022-11-20 09:27:14,306 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 09:27:14,307 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1061216580] [2022-11-20 09:27:14,307 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:27:14,308 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 09:27:14,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:27:14,982 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 09:27:14,982 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 09:27:14,983 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1061216580] [2022-11-20 09:27:14,983 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1061216580] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 09:27:14,984 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 09:27:14,984 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-20 09:27:14,986 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1732442894] [2022-11-20 09:27:14,987 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 09:27:14,996 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 09:27:14,996 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 09:27:15,049 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 09:27:15,054 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 09:27:15,062 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 122 out of 138 [2022-11-20 09:27:15,071 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 145 places, 134 transitions, 280 flow. Second operand has 3 states, 3 states have (on average 123.0) internal successors, (369), 3 states have internal predecessors, (369), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:27:15,071 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 09:27:15,072 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 122 of 138 [2022-11-20 09:27:15,073 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 09:27:15,379 INFO L130 PetriNetUnfolder]: 162/548 cut-off events. [2022-11-20 09:27:15,380 INFO L131 PetriNetUnfolder]: For 22/22 co-relation queries the response was YES. [2022-11-20 09:27:15,383 INFO L83 FinitePrefix]: Finished finitePrefix Result has 854 conditions, 548 events. 162/548 cut-off events. For 22/22 co-relation queries the response was YES. Maximal size of possible extension queue 43. Compared 2861 event pairs, 34 based on Foata normal form. 53/572 useless extension candidates. Maximal degree in co-relation 797. Up to 191 conditions per place. [2022-11-20 09:27:15,388 INFO L137 encePairwiseOnDemand]: 133/138 looper letters, 18 selfloop transitions, 2 changer transitions 0/138 dead transitions. [2022-11-20 09:27:15,388 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 145 places, 138 transitions, 337 flow [2022-11-20 09:27:15,390 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 09:27:15,393 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-20 09:27:15,401 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 391 transitions. [2022-11-20 09:27:15,403 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9444444444444444 [2022-11-20 09:27:15,404 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 391 transitions. [2022-11-20 09:27:15,405 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 391 transitions. [2022-11-20 09:27:15,407 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 09:27:15,410 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 391 transitions. [2022-11-20 09:27:15,413 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 130.33333333333334) internal successors, (391), 3 states have internal predecessors, (391), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:27:15,423 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 138.0) internal successors, (552), 4 states have internal predecessors, (552), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:27:15,423 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 138.0) internal successors, (552), 4 states have internal predecessors, (552), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:27:15,425 INFO L175 Difference]: Start difference. First operand has 145 places, 134 transitions, 280 flow. Second operand 3 states and 391 transitions. [2022-11-20 09:27:15,426 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 145 places, 138 transitions, 337 flow [2022-11-20 09:27:15,430 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 141 places, 138 transitions, 330 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-11-20 09:27:15,434 INFO L231 Difference]: Finished difference. Result has 141 places, 130 transitions, 272 flow [2022-11-20 09:27:15,437 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=138, PETRI_DIFFERENCE_MINUEND_FLOW=268, PETRI_DIFFERENCE_MINUEND_PLACES=139, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=130, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=128, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=272, PETRI_PLACES=141, PETRI_TRANSITIONS=130} [2022-11-20 09:27:15,444 INFO L288 CegarLoopForPetriNet]: 145 programPoint places, -4 predicate places. [2022-11-20 09:27:15,444 INFO L495 AbstractCegarLoop]: Abstraction has has 141 places, 130 transitions, 272 flow [2022-11-20 09:27:15,445 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 123.0) internal successors, (369), 3 states have internal predecessors, (369), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:27:15,445 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 09:27:15,445 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 09:27:15,445 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-20 09:27:15,446 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-11-20 09:27:15,448 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 09:27:15,449 INFO L85 PathProgramCache]: Analyzing trace with hash 1982565280, now seen corresponding path program 1 times [2022-11-20 09:27:15,449 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 09:27:15,449 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1367188672] [2022-11-20 09:27:15,450 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:27:15,450 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 09:27:15,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:27:16,024 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 09:27:16,024 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 09:27:16,025 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1367188672] [2022-11-20 09:27:16,025 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1367188672] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 09:27:16,025 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 09:27:16,026 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-20 09:27:16,026 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [199322478] [2022-11-20 09:27:16,026 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 09:27:16,028 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-20 09:27:16,028 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 09:27:16,028 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-20 09:27:16,029 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-11-20 09:27:16,031 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 104 out of 138 [2022-11-20 09:27:16,032 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 141 places, 130 transitions, 272 flow. Second operand has 7 states, 7 states have (on average 106.28571428571429) internal successors, (744), 7 states have internal predecessors, (744), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:27:16,033 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 09:27:16,033 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 104 of 138 [2022-11-20 09:27:16,033 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 09:27:23,984 INFO L130 PetriNetUnfolder]: 19160/41549 cut-off events. [2022-11-20 09:27:23,984 INFO L131 PetriNetUnfolder]: For 1621/1621 co-relation queries the response was YES. [2022-11-20 09:27:24,161 INFO L83 FinitePrefix]: Finished finitePrefix Result has 69394 conditions, 41549 events. 19160/41549 cut-off events. For 1621/1621 co-relation queries the response was YES. Maximal size of possible extension queue 1617. Compared 447480 event pairs, 1646 based on Foata normal form. 0/40454 useless extension candidates. Maximal degree in co-relation 69334. Up to 7909 conditions per place. [2022-11-20 09:27:24,280 INFO L137 encePairwiseOnDemand]: 122/138 looper letters, 47 selfloop transitions, 14 changer transitions 137/285 dead transitions. [2022-11-20 09:27:24,281 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 153 places, 285 transitions, 980 flow [2022-11-20 09:27:24,282 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-20 09:27:24,282 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2022-11-20 09:27:24,285 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1540 transitions. [2022-11-20 09:27:24,286 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8584169453734671 [2022-11-20 09:27:24,287 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 1540 transitions. [2022-11-20 09:27:24,287 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 1540 transitions. [2022-11-20 09:27:24,288 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 09:27:24,288 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 1540 transitions. [2022-11-20 09:27:24,293 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 118.46153846153847) internal successors, (1540), 13 states have internal predecessors, (1540), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:27:24,297 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 138.0) internal successors, (1932), 14 states have internal predecessors, (1932), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:27:24,299 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 138.0) internal successors, (1932), 14 states have internal predecessors, (1932), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:27:24,299 INFO L175 Difference]: Start difference. First operand has 141 places, 130 transitions, 272 flow. Second operand 13 states and 1540 transitions. [2022-11-20 09:27:24,299 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 153 places, 285 transitions, 980 flow [2022-11-20 09:27:24,303 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 151 places, 285 transitions, 954 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-20 09:27:24,306 INFO L231 Difference]: Finished difference. Result has 163 places, 126 transitions, 390 flow [2022-11-20 09:27:24,307 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=138, PETRI_DIFFERENCE_MINUEND_FLOW=268, PETRI_DIFFERENCE_MINUEND_PLACES=139, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=130, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=118, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=390, PETRI_PLACES=163, PETRI_TRANSITIONS=126} [2022-11-20 09:27:24,307 INFO L288 CegarLoopForPetriNet]: 145 programPoint places, 18 predicate places. [2022-11-20 09:27:24,308 INFO L495 AbstractCegarLoop]: Abstraction has has 163 places, 126 transitions, 390 flow [2022-11-20 09:27:24,309 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 106.28571428571429) internal successors, (744), 7 states have internal predecessors, (744), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:27:24,309 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 09:27:24,309 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 09:27:24,310 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-20 09:27:24,310 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-11-20 09:27:24,311 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 09:27:24,311 INFO L85 PathProgramCache]: Analyzing trace with hash -857809439, now seen corresponding path program 1 times [2022-11-20 09:27:24,312 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 09:27:24,312 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [164586603] [2022-11-20 09:27:24,312 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:27:24,313 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 09:27:24,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:27:24,695 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 09:27:24,696 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 09:27:24,696 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [164586603] [2022-11-20 09:27:24,696 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [164586603] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 09:27:24,697 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 09:27:24,697 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-20 09:27:24,697 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1890691266] [2022-11-20 09:27:24,697 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 09:27:24,698 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-20 09:27:24,698 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 09:27:24,699 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-20 09:27:24,699 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-11-20 09:27:24,700 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 104 out of 138 [2022-11-20 09:27:24,701 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 163 places, 126 transitions, 390 flow. Second operand has 7 states, 7 states have (on average 106.42857142857143) internal successors, (745), 7 states have internal predecessors, (745), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:27:24,701 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 09:27:24,702 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 104 of 138 [2022-11-20 09:27:24,702 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 09:27:28,995 INFO L130 PetriNetUnfolder]: 12504/21213 cut-off events. [2022-11-20 09:27:28,996 INFO L131 PetriNetUnfolder]: For 36937/37017 co-relation queries the response was YES. [2022-11-20 09:27:29,071 INFO L83 FinitePrefix]: Finished finitePrefix Result has 64395 conditions, 21213 events. 12504/21213 cut-off events. For 36937/37017 co-relation queries the response was YES. Maximal size of possible extension queue 987. Compared 169568 event pairs, 1654 based on Foata normal form. 484/21398 useless extension candidates. Maximal degree in co-relation 64317. Up to 4563 conditions per place. [2022-11-20 09:27:29,150 INFO L137 encePairwiseOnDemand]: 126/138 looper letters, 57 selfloop transitions, 14 changer transitions 130/288 dead transitions. [2022-11-20 09:27:29,150 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 152 places, 288 transitions, 1658 flow [2022-11-20 09:27:29,151 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-20 09:27:29,151 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2022-11-20 09:27:29,154 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1519 transitions. [2022-11-20 09:27:29,156 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.846711259754738 [2022-11-20 09:27:29,156 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 1519 transitions. [2022-11-20 09:27:29,156 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 1519 transitions. [2022-11-20 09:27:29,157 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 09:27:29,157 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 1519 transitions. [2022-11-20 09:27:29,162 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 116.84615384615384) internal successors, (1519), 13 states have internal predecessors, (1519), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:27:29,167 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 138.0) internal successors, (1932), 14 states have internal predecessors, (1932), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:27:29,168 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 138.0) internal successors, (1932), 14 states have internal predecessors, (1932), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:27:29,169 INFO L175 Difference]: Start difference. First operand has 163 places, 126 transitions, 390 flow. Second operand 13 states and 1519 transitions. [2022-11-20 09:27:29,169 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 152 places, 288 transitions, 1658 flow [2022-11-20 09:27:29,451 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 149 places, 288 transitions, 1634 flow, removed 12 selfloop flow, removed 3 redundant places. [2022-11-20 09:27:29,456 INFO L231 Difference]: Finished difference. Result has 161 places, 136 transitions, 582 flow [2022-11-20 09:27:29,457 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=138, PETRI_DIFFERENCE_MINUEND_FLOW=384, PETRI_DIFFERENCE_MINUEND_PLACES=137, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=126, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=112, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=582, PETRI_PLACES=161, PETRI_TRANSITIONS=136} [2022-11-20 09:27:29,459 INFO L288 CegarLoopForPetriNet]: 145 programPoint places, 16 predicate places. [2022-11-20 09:27:29,459 INFO L495 AbstractCegarLoop]: Abstraction has has 161 places, 136 transitions, 582 flow [2022-11-20 09:27:29,460 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 106.42857142857143) internal successors, (745), 7 states have internal predecessors, (745), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:27:29,460 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 09:27:29,461 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 09:27:29,461 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-20 09:27:29,461 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-11-20 09:27:29,462 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 09:27:29,462 INFO L85 PathProgramCache]: Analyzing trace with hash -159683075, now seen corresponding path program 1 times [2022-11-20 09:27:29,462 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 09:27:29,463 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1842521535] [2022-11-20 09:27:29,464 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:27:29,464 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 09:27:29,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:27:29,836 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 09:27:29,837 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 09:27:29,837 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1842521535] [2022-11-20 09:27:29,837 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1842521535] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 09:27:29,838 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 09:27:29,838 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-20 09:27:29,838 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1378391445] [2022-11-20 09:27:29,838 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 09:27:29,839 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-20 09:27:29,839 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 09:27:29,840 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-20 09:27:29,840 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-11-20 09:27:29,841 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 104 out of 138 [2022-11-20 09:27:29,842 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 161 places, 136 transitions, 582 flow. Second operand has 7 states, 7 states have (on average 106.71428571428571) internal successors, (747), 7 states have internal predecessors, (747), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:27:29,843 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 09:27:29,843 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 104 of 138 [2022-11-20 09:27:29,843 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 09:27:33,141 INFO L130 PetriNetUnfolder]: 9217/16413 cut-off events. [2022-11-20 09:27:33,141 INFO L131 PetriNetUnfolder]: For 59460/59672 co-relation queries the response was YES. [2022-11-20 09:27:33,208 INFO L83 FinitePrefix]: Finished finitePrefix Result has 57344 conditions, 16413 events. 9217/16413 cut-off events. For 59460/59672 co-relation queries the response was YES. Maximal size of possible extension queue 765. Compared 132759 event pairs, 1474 based on Foata normal form. 294/16253 useless extension candidates. Maximal degree in co-relation 57255. Up to 4665 conditions per place. [2022-11-20 09:27:33,277 INFO L137 encePairwiseOnDemand]: 123/138 looper letters, 56 selfloop transitions, 34 changer transitions 100/277 dead transitions. [2022-11-20 09:27:33,278 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 164 places, 277 transitions, 1976 flow [2022-11-20 09:27:33,278 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-20 09:27:33,279 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2022-11-20 09:27:33,281 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1509 transitions. [2022-11-20 09:27:33,282 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8411371237458194 [2022-11-20 09:27:33,283 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 1509 transitions. [2022-11-20 09:27:33,284 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 1509 transitions. [2022-11-20 09:27:33,289 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 09:27:33,289 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 1509 transitions. [2022-11-20 09:27:33,293 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 116.07692307692308) internal successors, (1509), 13 states have internal predecessors, (1509), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:27:33,296 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 138.0) internal successors, (1932), 14 states have internal predecessors, (1932), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:27:33,297 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 138.0) internal successors, (1932), 14 states have internal predecessors, (1932), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:27:33,297 INFO L175 Difference]: Start difference. First operand has 161 places, 136 transitions, 582 flow. Second operand 13 states and 1509 transitions. [2022-11-20 09:27:33,298 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 164 places, 277 transitions, 1976 flow [2022-11-20 09:27:33,468 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 160 places, 277 transitions, 1898 flow, removed 36 selfloop flow, removed 4 redundant places. [2022-11-20 09:27:33,474 INFO L231 Difference]: Finished difference. Result has 172 places, 154 transitions, 949 flow [2022-11-20 09:27:33,480 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=138, PETRI_DIFFERENCE_MINUEND_FLOW=561, PETRI_DIFFERENCE_MINUEND_PLACES=148, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=136, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=109, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=949, PETRI_PLACES=172, PETRI_TRANSITIONS=154} [2022-11-20 09:27:33,482 INFO L288 CegarLoopForPetriNet]: 145 programPoint places, 27 predicate places. [2022-11-20 09:27:33,482 INFO L495 AbstractCegarLoop]: Abstraction has has 172 places, 154 transitions, 949 flow [2022-11-20 09:27:33,483 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 106.71428571428571) internal successors, (747), 7 states have internal predecessors, (747), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:27:33,483 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 09:27:33,483 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 09:27:33,483 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-20 09:27:33,484 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-11-20 09:27:33,484 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 09:27:33,484 INFO L85 PathProgramCache]: Analyzing trace with hash -2141094000, now seen corresponding path program 1 times [2022-11-20 09:27:33,484 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 09:27:33,485 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [350281168] [2022-11-20 09:27:33,486 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:27:33,486 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 09:27:33,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:27:33,767 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 09:27:33,768 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 09:27:33,768 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [350281168] [2022-11-20 09:27:33,768 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [350281168] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 09:27:33,768 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 09:27:33,769 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-20 09:27:33,769 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [268067889] [2022-11-20 09:27:33,769 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 09:27:33,770 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-20 09:27:33,770 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 09:27:33,770 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-20 09:27:33,771 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-11-20 09:27:33,772 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 104 out of 138 [2022-11-20 09:27:33,773 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 172 places, 154 transitions, 949 flow. Second operand has 7 states, 7 states have (on average 106.85714285714286) internal successors, (748), 7 states have internal predecessors, (748), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:27:33,773 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 09:27:33,773 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 104 of 138 [2022-11-20 09:27:33,773 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 09:27:38,589 INFO L130 PetriNetUnfolder]: 11015/19778 cut-off events. [2022-11-20 09:27:38,589 INFO L131 PetriNetUnfolder]: For 99431/100191 co-relation queries the response was YES. [2022-11-20 09:27:38,725 INFO L83 FinitePrefix]: Finished finitePrefix Result has 73829 conditions, 19778 events. 11015/19778 cut-off events. For 99431/100191 co-relation queries the response was YES. Maximal size of possible extension queue 941. Compared 165248 event pairs, 1722 based on Foata normal form. 642/19706 useless extension candidates. Maximal degree in co-relation 73726. Up to 4484 conditions per place. [2022-11-20 09:27:38,794 INFO L137 encePairwiseOnDemand]: 123/138 looper letters, 61 selfloop transitions, 43 changer transitions 99/290 dead transitions. [2022-11-20 09:27:38,794 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 175 places, 290 transitions, 2377 flow [2022-11-20 09:27:38,795 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-20 09:27:38,795 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2022-11-20 09:27:38,799 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1507 transitions. [2022-11-20 09:27:38,800 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8400222965440357 [2022-11-20 09:27:38,800 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 1507 transitions. [2022-11-20 09:27:38,801 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 1507 transitions. [2022-11-20 09:27:38,802 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 09:27:38,802 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 1507 transitions. [2022-11-20 09:27:38,807 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 115.92307692307692) internal successors, (1507), 13 states have internal predecessors, (1507), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:27:38,811 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 138.0) internal successors, (1932), 14 states have internal predecessors, (1932), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:27:38,812 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 138.0) internal successors, (1932), 14 states have internal predecessors, (1932), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:27:38,813 INFO L175 Difference]: Start difference. First operand has 172 places, 154 transitions, 949 flow. Second operand 13 states and 1507 transitions. [2022-11-20 09:27:38,813 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 175 places, 290 transitions, 2377 flow [2022-11-20 09:27:39,425 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 166 places, 290 transitions, 2209 flow, removed 84 selfloop flow, removed 9 redundant places. [2022-11-20 09:27:39,428 INFO L231 Difference]: Finished difference. Result has 178 places, 163 transitions, 1214 flow [2022-11-20 09:27:39,429 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=138, PETRI_DIFFERENCE_MINUEND_FLOW=871, PETRI_DIFFERENCE_MINUEND_PLACES=154, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=154, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=111, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=1214, PETRI_PLACES=178, PETRI_TRANSITIONS=163} [2022-11-20 09:27:39,429 INFO L288 CegarLoopForPetriNet]: 145 programPoint places, 33 predicate places. [2022-11-20 09:27:39,430 INFO L495 AbstractCegarLoop]: Abstraction has has 178 places, 163 transitions, 1214 flow [2022-11-20 09:27:39,430 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 106.85714285714286) internal successors, (748), 7 states have internal predecessors, (748), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:27:39,430 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 09:27:39,431 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 09:27:39,431 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-20 09:27:39,431 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-11-20 09:27:39,432 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 09:27:39,432 INFO L85 PathProgramCache]: Analyzing trace with hash -1885425250, now seen corresponding path program 1 times [2022-11-20 09:27:39,432 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 09:27:39,432 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1336314813] [2022-11-20 09:27:39,433 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:27:39,433 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 09:27:39,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:27:39,804 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 09:27:39,804 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 09:27:39,804 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1336314813] [2022-11-20 09:27:39,804 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1336314813] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 09:27:39,805 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 09:27:39,805 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-20 09:27:39,805 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1407942197] [2022-11-20 09:27:39,805 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 09:27:39,806 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-20 09:27:39,806 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 09:27:39,808 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-20 09:27:39,808 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-20 09:27:39,809 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 111 out of 138 [2022-11-20 09:27:39,810 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 178 places, 163 transitions, 1214 flow. Second operand has 6 states, 6 states have (on average 113.0) internal successors, (678), 6 states have internal predecessors, (678), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:27:39,810 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 09:27:39,811 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 111 of 138 [2022-11-20 09:27:39,811 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 09:27:50,695 INFO L130 PetriNetUnfolder]: 32325/56129 cut-off events. [2022-11-20 09:27:50,696 INFO L131 PetriNetUnfolder]: For 161226/194412 co-relation queries the response was YES. [2022-11-20 09:27:51,155 INFO L83 FinitePrefix]: Finished finitePrefix Result has 147578 conditions, 56129 events. 32325/56129 cut-off events. For 161226/194412 co-relation queries the response was YES. Maximal size of possible extension queue 3233. Compared 539945 event pairs, 1865 based on Foata normal form. 1328/54421 useless extension candidates. Maximal degree in co-relation 147470. Up to 17949 conditions per place. [2022-11-20 09:27:51,518 INFO L137 encePairwiseOnDemand]: 127/138 looper letters, 117 selfloop transitions, 20 changer transitions 0/273 dead transitions. [2022-11-20 09:27:51,518 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 178 places, 273 transitions, 2316 flow [2022-11-20 09:27:51,518 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-20 09:27:51,519 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-11-20 09:27:51,529 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1217 transitions. [2022-11-20 09:27:51,530 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8818840579710145 [2022-11-20 09:27:51,530 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1217 transitions. [2022-11-20 09:27:51,530 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1217 transitions. [2022-11-20 09:27:51,531 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 09:27:51,531 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1217 transitions. [2022-11-20 09:27:51,533 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 121.7) internal successors, (1217), 10 states have internal predecessors, (1217), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:27:51,539 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 138.0) internal successors, (1518), 11 states have internal predecessors, (1518), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:27:51,539 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 138.0) internal successors, (1518), 11 states have internal predecessors, (1518), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:27:51,540 INFO L175 Difference]: Start difference. First operand has 178 places, 163 transitions, 1214 flow. Second operand 10 states and 1217 transitions. [2022-11-20 09:27:51,540 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 178 places, 273 transitions, 2316 flow [2022-11-20 09:27:51,660 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 169 places, 273 transitions, 2254 flow, removed 31 selfloop flow, removed 9 redundant places. [2022-11-20 09:27:51,664 INFO L231 Difference]: Finished difference. Result has 175 places, 181 transitions, 1337 flow [2022-11-20 09:27:51,665 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=138, PETRI_DIFFERENCE_MINUEND_FLOW=1194, PETRI_DIFFERENCE_MINUEND_PLACES=160, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=163, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=153, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1337, PETRI_PLACES=175, PETRI_TRANSITIONS=181} [2022-11-20 09:27:51,666 INFO L288 CegarLoopForPetriNet]: 145 programPoint places, 30 predicate places. [2022-11-20 09:27:51,666 INFO L495 AbstractCegarLoop]: Abstraction has has 175 places, 181 transitions, 1337 flow [2022-11-20 09:27:51,666 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 113.0) internal successors, (678), 6 states have internal predecessors, (678), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:27:51,666 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 09:27:51,667 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 09:27:51,667 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-20 09:27:51,667 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-11-20 09:27:51,668 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 09:27:51,668 INFO L85 PathProgramCache]: Analyzing trace with hash -2097848902, now seen corresponding path program 1 times [2022-11-20 09:27:51,668 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 09:27:51,668 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1524452008] [2022-11-20 09:27:51,668 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:27:51,669 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 09:27:51,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:27:51,902 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 09:27:51,902 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 09:27:51,903 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1524452008] [2022-11-20 09:27:51,903 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1524452008] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 09:27:51,903 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 09:27:51,903 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-20 09:27:51,907 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1753075088] [2022-11-20 09:27:51,908 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 09:27:51,910 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-20 09:27:51,910 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 09:27:51,910 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-20 09:27:51,910 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-20 09:27:51,911 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 113 out of 138 [2022-11-20 09:27:51,912 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 175 places, 181 transitions, 1337 flow. Second operand has 6 states, 6 states have (on average 115.5) internal successors, (693), 6 states have internal predecessors, (693), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:27:51,912 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 09:27:51,913 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 113 of 138 [2022-11-20 09:27:51,913 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 09:27:58,117 INFO L130 PetriNetUnfolder]: 11332/32883 cut-off events. [2022-11-20 09:27:58,117 INFO L131 PetriNetUnfolder]: For 100563/108758 co-relation queries the response was YES. [2022-11-20 09:27:58,386 INFO L83 FinitePrefix]: Finished finitePrefix Result has 98780 conditions, 32883 events. 11332/32883 cut-off events. For 100563/108758 co-relation queries the response was YES. Maximal size of possible extension queue 2318. Compared 444216 event pairs, 4192 based on Foata normal form. 1525/32071 useless extension candidates. Maximal degree in co-relation 98672. Up to 6397 conditions per place. [2022-11-20 09:27:58,489 INFO L137 encePairwiseOnDemand]: 132/138 looper letters, 85 selfloop transitions, 28 changer transitions 0/251 dead transitions. [2022-11-20 09:27:58,489 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 183 places, 251 transitions, 2181 flow [2022-11-20 09:27:58,490 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-20 09:27:58,490 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-11-20 09:27:58,493 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1093 transitions. [2022-11-20 09:27:58,493 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8800322061191627 [2022-11-20 09:27:58,494 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1093 transitions. [2022-11-20 09:27:58,494 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1093 transitions. [2022-11-20 09:27:58,494 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 09:27:58,494 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1093 transitions. [2022-11-20 09:27:58,497 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 121.44444444444444) internal successors, (1093), 9 states have internal predecessors, (1093), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:27:58,499 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 138.0) internal successors, (1380), 10 states have internal predecessors, (1380), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:27:58,500 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 138.0) internal successors, (1380), 10 states have internal predecessors, (1380), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:27:58,500 INFO L175 Difference]: Start difference. First operand has 175 places, 181 transitions, 1337 flow. Second operand 9 states and 1093 transitions. [2022-11-20 09:27:58,501 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 183 places, 251 transitions, 2181 flow [2022-11-20 09:27:59,395 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 182 places, 251 transitions, 2179 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-20 09:27:59,398 INFO L231 Difference]: Finished difference. Result has 189 places, 192 transitions, 1592 flow [2022-11-20 09:27:59,399 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=138, PETRI_DIFFERENCE_MINUEND_FLOW=1335, PETRI_DIFFERENCE_MINUEND_PLACES=174, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=181, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=161, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1592, PETRI_PLACES=189, PETRI_TRANSITIONS=192} [2022-11-20 09:27:59,399 INFO L288 CegarLoopForPetriNet]: 145 programPoint places, 44 predicate places. [2022-11-20 09:27:59,399 INFO L495 AbstractCegarLoop]: Abstraction has has 189 places, 192 transitions, 1592 flow [2022-11-20 09:27:59,400 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 115.5) internal successors, (693), 6 states have internal predecessors, (693), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:27:59,400 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 09:27:59,400 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 09:27:59,401 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-20 09:27:59,401 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-11-20 09:27:59,401 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 09:27:59,401 INFO L85 PathProgramCache]: Analyzing trace with hash -1541304642, now seen corresponding path program 1 times [2022-11-20 09:27:59,402 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 09:27:59,402 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2074235730] [2022-11-20 09:27:59,402 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:27:59,402 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 09:27:59,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:27:59,715 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 09:27:59,719 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 09:27:59,720 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2074235730] [2022-11-20 09:27:59,720 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2074235730] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 09:27:59,720 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 09:27:59,720 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-20 09:27:59,721 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1687008210] [2022-11-20 09:27:59,721 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 09:27:59,722 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-20 09:27:59,722 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 09:27:59,723 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-20 09:27:59,723 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-11-20 09:27:59,725 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 111 out of 138 [2022-11-20 09:27:59,726 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 189 places, 192 transitions, 1592 flow. Second operand has 7 states, 7 states have (on average 113.0) internal successors, (791), 7 states have internal predecessors, (791), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:27:59,726 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 09:27:59,726 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 111 of 138 [2022-11-20 09:27:59,726 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand