./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/pthread-wmm/mix018_power.oepc_pso.oepc_rmo.oepc.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version b5237d83 Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2991994f-ee99-4519-b22e-45809a5e4c5b/bin/uautomizer-vX5HgA9Q3a/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2991994f-ee99-4519-b22e-45809a5e4c5b/bin/uautomizer-vX5HgA9Q3a/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2991994f-ee99-4519-b22e-45809a5e4c5b/bin/uautomizer-vX5HgA9Q3a/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2991994f-ee99-4519-b22e-45809a5e4c5b/bin/uautomizer-vX5HgA9Q3a/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread-wmm/mix018_power.oepc_pso.oepc_rmo.oepc.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2991994f-ee99-4519-b22e-45809a5e4c5b/bin/uautomizer-vX5HgA9Q3a/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2991994f-ee99-4519-b22e-45809a5e4c5b/bin/uautomizer-vX5HgA9Q3a --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 5a744aa24a15b244d86986861038a45981c329f5578e2da992d82373e2f73c5a --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-b5237d8 [2022-11-21 13:55:04,099 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-21 13:55:04,101 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-21 13:55:04,133 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-21 13:55:04,136 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-21 13:55:04,140 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-21 13:55:04,142 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-21 13:55:04,145 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-21 13:55:04,148 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-21 13:55:04,153 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-21 13:55:04,154 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-21 13:55:04,156 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-21 13:55:04,157 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-21 13:55:04,160 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-21 13:55:04,165 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-21 13:55:04,167 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-21 13:55:04,167 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-21 13:55:04,169 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-21 13:55:04,170 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-21 13:55:04,172 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-21 13:55:04,173 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-21 13:55:04,180 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-21 13:55:04,181 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-21 13:55:04,184 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-21 13:55:04,187 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-21 13:55:04,192 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-21 13:55:04,193 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-21 13:55:04,194 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-21 13:55:04,194 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-21 13:55:04,195 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-21 13:55:04,197 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-21 13:55:04,198 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-21 13:55:04,199 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-21 13:55:04,201 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-21 13:55:04,202 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-21 13:55:04,204 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-21 13:55:04,205 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-21 13:55:04,206 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-21 13:55:04,206 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-21 13:55:04,208 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-21 13:55:04,209 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-21 13:55:04,209 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2991994f-ee99-4519-b22e-45809a5e4c5b/bin/uautomizer-vX5HgA9Q3a/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-11-21 13:55:04,243 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-21 13:55:04,243 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-21 13:55:04,244 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-21 13:55:04,244 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-21 13:55:04,245 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-21 13:55:04,246 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-21 13:55:04,246 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-21 13:55:04,247 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-21 13:55:04,247 INFO L138 SettingsManager]: * Use SBE=true [2022-11-21 13:55:04,247 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-21 13:55:04,248 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-21 13:55:04,248 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-21 13:55:04,249 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-21 13:55:04,249 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-21 13:55:04,249 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-21 13:55:04,249 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-21 13:55:04,249 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-21 13:55:04,250 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-21 13:55:04,250 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-21 13:55:04,250 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-21 13:55:04,250 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-21 13:55:04,251 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-21 13:55:04,251 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-21 13:55:04,251 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-21 13:55:04,251 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-21 13:55:04,251 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-21 13:55:04,252 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-21 13:55:04,252 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-21 13:55:04,252 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-21 13:55:04,253 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-21 13:55:04,253 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-21 13:55:04,253 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-21 13:55:04,253 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-21 13:55:04,254 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_2991994f-ee99-4519-b22e-45809a5e4c5b/bin/uautomizer-vX5HgA9Q3a/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2991994f-ee99-4519-b22e-45809a5e4c5b/bin/uautomizer-vX5HgA9Q3a Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 5a744aa24a15b244d86986861038a45981c329f5578e2da992d82373e2f73c5a [2022-11-21 13:55:04,622 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-21 13:55:04,660 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-21 13:55:04,663 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-21 13:55:04,664 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-21 13:55:04,664 INFO L275 PluginConnector]: CDTParser initialized [2022-11-21 13:55:04,666 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2991994f-ee99-4519-b22e-45809a5e4c5b/bin/uautomizer-vX5HgA9Q3a/../../sv-benchmarks/c/pthread-wmm/mix018_power.oepc_pso.oepc_rmo.oepc.i [2022-11-21 13:55:07,709 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-21 13:55:08,014 INFO L351 CDTParser]: Found 1 translation units. [2022-11-21 13:55:08,015 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2991994f-ee99-4519-b22e-45809a5e4c5b/sv-benchmarks/c/pthread-wmm/mix018_power.oepc_pso.oepc_rmo.oepc.i [2022-11-21 13:55:08,030 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2991994f-ee99-4519-b22e-45809a5e4c5b/bin/uautomizer-vX5HgA9Q3a/data/d12e27965/5fd53210dab74369bc3cad120b68e223/FLAG3ec275480 [2022-11-21 13:55:08,049 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2991994f-ee99-4519-b22e-45809a5e4c5b/bin/uautomizer-vX5HgA9Q3a/data/d12e27965/5fd53210dab74369bc3cad120b68e223 [2022-11-21 13:55:08,054 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-21 13:55:08,056 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-21 13:55:08,058 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-21 13:55:08,058 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-21 13:55:08,062 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-21 13:55:08,063 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 01:55:08" (1/1) ... [2022-11-21 13:55:08,064 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@a0f9366 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:55:08, skipping insertion in model container [2022-11-21 13:55:08,064 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 01:55:08" (1/1) ... [2022-11-21 13:55:08,070 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-21 13:55:08,128 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-21 13:55:08,354 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_2991994f-ee99-4519-b22e-45809a5e4c5b/sv-benchmarks/c/pthread-wmm/mix018_power.oepc_pso.oepc_rmo.oepc.i[969,982] [2022-11-21 13:55:08,571 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-21 13:55:08,582 INFO L203 MainTranslator]: Completed pre-run [2022-11-21 13:55:08,594 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_2991994f-ee99-4519-b22e-45809a5e4c5b/sv-benchmarks/c/pthread-wmm/mix018_power.oepc_pso.oepc_rmo.oepc.i[969,982] [2022-11-21 13:55:08,687 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-21 13:55:08,732 INFO L208 MainTranslator]: Completed translation [2022-11-21 13:55:08,732 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:55:08 WrapperNode [2022-11-21 13:55:08,733 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-21 13:55:08,734 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-21 13:55:08,734 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-21 13:55:08,734 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-21 13:55:08,742 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:55:08" (1/1) ... [2022-11-21 13:55:08,762 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:55:08" (1/1) ... [2022-11-21 13:55:08,786 INFO L138 Inliner]: procedures = 177, calls = 69, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 145 [2022-11-21 13:55:08,787 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-21 13:55:08,788 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-21 13:55:08,788 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-21 13:55:08,788 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-21 13:55:08,798 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:55:08" (1/1) ... [2022-11-21 13:55:08,799 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:55:08" (1/1) ... [2022-11-21 13:55:08,802 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:55:08" (1/1) ... [2022-11-21 13:55:08,803 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:55:08" (1/1) ... [2022-11-21 13:55:08,821 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:55:08" (1/1) ... [2022-11-21 13:55:08,832 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:55:08" (1/1) ... [2022-11-21 13:55:08,845 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:55:08" (1/1) ... [2022-11-21 13:55:08,846 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:55:08" (1/1) ... [2022-11-21 13:55:08,850 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-21 13:55:08,851 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-21 13:55:08,852 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-21 13:55:08,852 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-21 13:55:08,853 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:55:08" (1/1) ... [2022-11-21 13:55:08,859 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-21 13:55:08,872 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2991994f-ee99-4519-b22e-45809a5e4c5b/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 13:55:08,889 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2991994f-ee99-4519-b22e-45809a5e4c5b/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-21 13:55:08,905 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2991994f-ee99-4519-b22e-45809a5e4c5b/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-21 13:55:08,934 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-21 13:55:08,934 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-11-21 13:55:08,934 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-21 13:55:08,934 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-21 13:55:08,934 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-21 13:55:08,934 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2022-11-21 13:55:08,935 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2022-11-21 13:55:08,937 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2022-11-21 13:55:08,938 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2022-11-21 13:55:08,938 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2022-11-21 13:55:08,938 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2022-11-21 13:55:08,938 INFO L130 BoogieDeclarations]: Found specification of procedure P3 [2022-11-21 13:55:08,939 INFO L138 BoogieDeclarations]: Found implementation of procedure P3 [2022-11-21 13:55:08,939 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-21 13:55:08,939 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-11-21 13:55:08,939 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-21 13:55:08,939 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-21 13:55:08,941 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-21 13:55:09,154 INFO L235 CfgBuilder]: Building ICFG [2022-11-21 13:55:09,156 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-21 13:55:09,606 INFO L276 CfgBuilder]: Performing block encoding [2022-11-21 13:55:09,811 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-21 13:55:09,812 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-11-21 13:55:09,814 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 01:55:09 BoogieIcfgContainer [2022-11-21 13:55:09,814 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-21 13:55:09,817 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-21 13:55:09,817 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-21 13:55:09,821 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-21 13:55:09,821 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.11 01:55:08" (1/3) ... [2022-11-21 13:55:09,822 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@9f3e35a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 01:55:09, skipping insertion in model container [2022-11-21 13:55:09,822 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:55:08" (2/3) ... [2022-11-21 13:55:09,822 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@9f3e35a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 01:55:09, skipping insertion in model container [2022-11-21 13:55:09,823 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 01:55:09" (3/3) ... [2022-11-21 13:55:09,824 INFO L112 eAbstractionObserver]: Analyzing ICFG mix018_power.oepc_pso.oepc_rmo.oepc.i [2022-11-21 13:55:09,833 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-21 13:55:09,845 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-21 13:55:09,845 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-11-21 13:55:09,846 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-21 13:55:09,941 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-11-21 13:55:09,996 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 149 places, 138 transitions, 296 flow [2022-11-21 13:55:10,101 INFO L130 PetriNetUnfolder]: 2/134 cut-off events. [2022-11-21 13:55:10,102 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-21 13:55:10,108 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 71 event pairs, 0 based on Foata normal form. 0/130 useless extension candidates. Maximal degree in co-relation 92. Up to 2 conditions per place. [2022-11-21 13:55:10,109 INFO L82 GeneralOperation]: Start removeDead. Operand has 149 places, 138 transitions, 296 flow [2022-11-21 13:55:10,117 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 145 places, 134 transitions, 280 flow [2022-11-21 13:55:10,127 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-21 13:55:10,134 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;@111263f5, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-21 13:55:10,134 INFO L358 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2022-11-21 13:55:10,149 INFO L130 PetriNetUnfolder]: 0/51 cut-off events. [2022-11-21 13:55:10,151 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-21 13:55:10,152 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 13:55:10,153 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] [2022-11-21 13:55:10,153 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting P0Err0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-11-21 13:55:10,158 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 13:55:10,159 INFO L85 PathProgramCache]: Analyzing trace with hash -59797304, now seen corresponding path program 1 times [2022-11-21 13:55:10,169 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 13:55:10,170 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1644138164] [2022-11-21 13:55:10,170 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 13:55:10,171 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 13:55:10,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:55:10,857 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 13:55:10,858 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 13:55:10,859 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1644138164] [2022-11-21 13:55:10,860 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1644138164] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 13:55:10,861 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 13:55:10,861 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-21 13:55:10,863 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [867685685] [2022-11-21 13:55:10,864 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 13:55:10,873 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-21 13:55:10,874 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 13:55:10,918 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-21 13:55:10,920 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-21 13:55:10,924 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 122 out of 138 [2022-11-21 13:55:10,931 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) [2022-11-21 13:55:10,931 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 13:55:10,932 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 122 of 138 [2022-11-21 13:55:10,933 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 13:55:11,280 INFO L130 PetriNetUnfolder]: 162/548 cut-off events. [2022-11-21 13:55:11,280 INFO L131 PetriNetUnfolder]: For 22/22 co-relation queries the response was YES. [2022-11-21 13:55:11,288 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 45. Compared 2798 event pairs, 34 based on Foata normal form. 49/568 useless extension candidates. Maximal degree in co-relation 796. Up to 191 conditions per place. [2022-11-21 13:55:11,294 INFO L137 encePairwiseOnDemand]: 133/138 looper letters, 18 selfloop transitions, 2 changer transitions 0/138 dead transitions. [2022-11-21 13:55:11,295 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 145 places, 138 transitions, 337 flow [2022-11-21 13:55:11,296 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-21 13:55:11,299 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-21 13:55:11,312 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 391 transitions. [2022-11-21 13:55:11,317 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9444444444444444 [2022-11-21 13:55:11,318 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 391 transitions. [2022-11-21 13:55:11,319 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 391 transitions. [2022-11-21 13:55:11,324 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 13:55:11,326 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 391 transitions. [2022-11-21 13:55:11,332 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) [2022-11-21 13:55:11,341 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) [2022-11-21 13:55:11,341 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) [2022-11-21 13:55:11,343 INFO L175 Difference]: Start difference. First operand has 145 places, 134 transitions, 280 flow. Second operand 3 states and 391 transitions. [2022-11-21 13:55:11,345 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 145 places, 138 transitions, 337 flow [2022-11-21 13:55:11,348 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 141 places, 138 transitions, 330 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-11-21 13:55:11,353 INFO L231 Difference]: Finished difference. Result has 141 places, 130 transitions, 272 flow [2022-11-21 13:55:11,356 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} [2022-11-21 13:55:11,364 INFO L288 CegarLoopForPetriNet]: 145 programPoint places, -4 predicate places. [2022-11-21 13:55:11,365 INFO L495 AbstractCegarLoop]: Abstraction has has 141 places, 130 transitions, 272 flow [2022-11-21 13:55:11,365 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) [2022-11-21 13:55:11,365 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 13:55:11,366 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] [2022-11-21 13:55:11,366 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-21 13:55:11,367 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)] === [2022-11-21 13:55:11,368 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 13:55:11,368 INFO L85 PathProgramCache]: Analyzing trace with hash 979002693, now seen corresponding path program 1 times [2022-11-21 13:55:11,368 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 13:55:11,369 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1645666624] [2022-11-21 13:55:11,369 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 13:55:11,370 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 13:55:11,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:55:11,923 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 13:55:11,924 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 13:55:11,924 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1645666624] [2022-11-21 13:55:11,924 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1645666624] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 13:55:11,925 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 13:55:11,925 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-21 13:55:11,925 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1203728015] [2022-11-21 13:55:11,926 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 13:55:11,927 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-21 13:55:11,927 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 13:55:11,928 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-21 13:55:11,928 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-11-21 13:55:11,930 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 106 out of 138 [2022-11-21 13:55:11,932 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 141 places, 130 transitions, 272 flow. Second operand has 7 states, 7 states have (on average 108.28571428571429) internal successors, (758), 7 states have internal predecessors, (758), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 13:55:11,932 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 13:55:11,932 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 106 of 138 [2022-11-21 13:55:11,932 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 13:55:16,234 INFO L130 PetriNetUnfolder]: 8438/18961 cut-off events. [2022-11-21 13:55:16,235 INFO L131 PetriNetUnfolder]: For 569/569 co-relation queries the response was YES. [2022-11-21 13:55:16,294 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31328 conditions, 18961 events. 8438/18961 cut-off events. For 569/569 co-relation queries the response was YES. Maximal size of possible extension queue 778. Compared 188009 event pairs, 964 based on Foata normal form. 0/18613 useless extension candidates. Maximal degree in co-relation 31267. Up to 4755 conditions per place. [2022-11-21 13:55:16,344 INFO L137 encePairwiseOnDemand]: 127/138 looper letters, 42 selfloop transitions, 7 changer transitions 110/248 dead transitions. [2022-11-21 13:55:16,344 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 153 places, 248 transitions, 814 flow [2022-11-21 13:55:16,345 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-21 13:55:16,345 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2022-11-21 13:55:16,348 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1527 transitions. [2022-11-21 13:55:16,349 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8511705685618729 [2022-11-21 13:55:16,349 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 1527 transitions. [2022-11-21 13:55:16,349 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 1527 transitions. [2022-11-21 13:55:16,350 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 13:55:16,350 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 1527 transitions. [2022-11-21 13:55:16,354 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 117.46153846153847) internal successors, (1527), 13 states have internal predecessors, (1527), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 13:55:16,358 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) [2022-11-21 13:55:16,360 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) [2022-11-21 13:55:16,360 INFO L175 Difference]: Start difference. First operand has 141 places, 130 transitions, 272 flow. Second operand 13 states and 1527 transitions. [2022-11-21 13:55:16,360 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 153 places, 248 transitions, 814 flow [2022-11-21 13:55:16,363 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 151 places, 248 transitions, 796 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-21 13:55:16,366 INFO L231 Difference]: Finished difference. Result has 163 places, 121 transitions, 340 flow [2022-11-21 13:55:16,366 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=123, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=340, PETRI_PLACES=163, PETRI_TRANSITIONS=121} [2022-11-21 13:55:16,367 INFO L288 CegarLoopForPetriNet]: 145 programPoint places, 18 predicate places. [2022-11-21 13:55:16,367 INFO L495 AbstractCegarLoop]: Abstraction has has 163 places, 121 transitions, 340 flow [2022-11-21 13:55:16,368 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 108.28571428571429) internal successors, (758), 7 states have internal predecessors, (758), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 13:55:16,368 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 13:55:16,368 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 13:55:16,369 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-21 13:55:16,369 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)] === [2022-11-21 13:55:16,369 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 13:55:16,370 INFO L85 PathProgramCache]: Analyzing trace with hash -703106615, now seen corresponding path program 1 times [2022-11-21 13:55:16,370 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 13:55:16,370 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1022539894] [2022-11-21 13:55:16,370 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 13:55:16,371 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 13:55:16,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:55:16,703 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 13:55:16,704 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 13:55:16,704 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1022539894] [2022-11-21 13:55:16,704 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1022539894] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 13:55:16,705 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 13:55:16,705 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-21 13:55:16,706 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1389566951] [2022-11-21 13:55:16,706 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 13:55:16,706 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-21 13:55:16,706 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 13:55:16,707 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-21 13:55:16,707 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-11-21 13:55:16,708 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 106 out of 138 [2022-11-21 13:55:16,710 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 163 places, 121 transitions, 340 flow. Second operand has 7 states, 7 states have (on average 108.42857142857143) internal successors, (759), 7 states have internal predecessors, (759), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 13:55:16,710 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 13:55:16,710 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 106 of 138 [2022-11-21 13:55:16,710 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 13:55:19,811 INFO L130 PetriNetUnfolder]: 6025/10549 cut-off events. [2022-11-21 13:55:19,811 INFO L131 PetriNetUnfolder]: For 20082/20094 co-relation queries the response was YES. [2022-11-21 13:55:19,853 INFO L83 FinitePrefix]: Finished finitePrefix Result has 32508 conditions, 10549 events. 6025/10549 cut-off events. For 20082/20094 co-relation queries the response was YES. Maximal size of possible extension queue 556. Compared 79501 event pairs, 750 based on Foata normal form. 214/10617 useless extension candidates. Maximal degree in co-relation 32435. Up to 4022 conditions per place. [2022-11-21 13:55:19,909 INFO L137 encePairwiseOnDemand]: 125/138 looper letters, 44 selfloop transitions, 16 changer transitions 85/234 dead transitions. [2022-11-21 13:55:19,910 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 152 places, 234 transitions, 1232 flow [2022-11-21 13:55:19,910 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-21 13:55:19,912 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2022-11-21 13:55:19,914 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1521 transitions. [2022-11-21 13:55:19,917 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8478260869565217 [2022-11-21 13:55:19,917 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 1521 transitions. [2022-11-21 13:55:19,917 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 1521 transitions. [2022-11-21 13:55:19,918 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 13:55:19,919 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 1521 transitions. [2022-11-21 13:55:19,922 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 117.0) internal successors, (1521), 13 states have internal predecessors, (1521), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 13:55:19,928 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) [2022-11-21 13:55:19,929 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) [2022-11-21 13:55:19,929 INFO L175 Difference]: Start difference. First operand has 163 places, 121 transitions, 340 flow. Second operand 13 states and 1521 transitions. [2022-11-21 13:55:19,929 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 152 places, 234 transitions, 1232 flow [2022-11-21 13:55:20,093 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 148 places, 234 transitions, 1180 flow, removed 24 selfloop flow, removed 4 redundant places. [2022-11-21 13:55:20,097 INFO L231 Difference]: Finished difference. Result has 159 places, 128 transitions, 465 flow [2022-11-21 13:55:20,098 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=138, PETRI_DIFFERENCE_MINUEND_FLOW=326, PETRI_DIFFERENCE_MINUEND_PLACES=136, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=121, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=108, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=465, PETRI_PLACES=159, PETRI_TRANSITIONS=128} [2022-11-21 13:55:20,100 INFO L288 CegarLoopForPetriNet]: 145 programPoint places, 14 predicate places. [2022-11-21 13:55:20,100 INFO L495 AbstractCegarLoop]: Abstraction has has 159 places, 128 transitions, 465 flow [2022-11-21 13:55:20,101 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 108.42857142857143) internal successors, (759), 7 states have internal predecessors, (759), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 13:55:20,101 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 13:55:20,101 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] [2022-11-21 13:55:20,102 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-21 13:55:20,103 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)] === [2022-11-21 13:55:20,104 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 13:55:20,104 INFO L85 PathProgramCache]: Analyzing trace with hash 209064794, now seen corresponding path program 1 times [2022-11-21 13:55:20,104 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 13:55:20,105 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [646768007] [2022-11-21 13:55:20,105 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 13:55:20,105 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 13:55:20,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:55:20,426 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 13:55:20,426 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 13:55:20,426 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [646768007] [2022-11-21 13:55:20,427 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [646768007] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 13:55:20,428 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 13:55:20,428 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-21 13:55:20,428 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [738968711] [2022-11-21 13:55:20,428 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 13:55:20,434 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-21 13:55:20,434 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 13:55:20,436 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-21 13:55:20,436 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-21 13:55:20,437 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 111 out of 138 [2022-11-21 13:55:20,440 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 159 places, 128 transitions, 465 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) [2022-11-21 13:55:20,440 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 13:55:20,440 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 111 of 138 [2022-11-21 13:55:20,441 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 13:55:25,037 INFO L130 PetriNetUnfolder]: 15263/27267 cut-off events. [2022-11-21 13:55:25,037 INFO L131 PetriNetUnfolder]: For 30432/35443 co-relation queries the response was YES. [2022-11-21 13:55:25,182 INFO L83 FinitePrefix]: Finished finitePrefix Result has 64927 conditions, 27267 events. 15263/27267 cut-off events. For 30432/35443 co-relation queries the response was YES. Maximal size of possible extension queue 1447. Compared 243515 event pairs, 1195 based on Foata normal form. 45/26095 useless extension candidates. Maximal degree in co-relation 64846. Up to 8121 conditions per place. [2022-11-21 13:55:25,470 INFO L137 encePairwiseOnDemand]: 127/138 looper letters, 93 selfloop transitions, 20 changer transitions 0/217 dead transitions. [2022-11-21 13:55:25,471 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 159 places, 217 transitions, 980 flow [2022-11-21 13:55:25,471 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-21 13:55:25,472 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-11-21 13:55:25,475 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1217 transitions. [2022-11-21 13:55:25,476 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8818840579710145 [2022-11-21 13:55:25,476 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1217 transitions. [2022-11-21 13:55:25,477 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1217 transitions. [2022-11-21 13:55:25,481 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 13:55:25,482 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1217 transitions. [2022-11-21 13:55:25,485 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) [2022-11-21 13:55:25,489 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) [2022-11-21 13:55:25,490 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) [2022-11-21 13:55:25,490 INFO L175 Difference]: Start difference. First operand has 159 places, 128 transitions, 465 flow. Second operand 10 states and 1217 transitions. [2022-11-21 13:55:25,490 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 159 places, 217 transitions, 980 flow [2022-11-21 13:55:25,660 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 147 places, 217 transitions, 950 flow, removed 15 selfloop flow, removed 12 redundant places. [2022-11-21 13:55:25,667 INFO L231 Difference]: Finished difference. Result has 153 places, 146 transitions, 578 flow [2022-11-21 13:55:25,672 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=138, PETRI_DIFFERENCE_MINUEND_FLOW=435, PETRI_DIFFERENCE_MINUEND_PLACES=138, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=128, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=118, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=578, PETRI_PLACES=153, PETRI_TRANSITIONS=146} [2022-11-21 13:55:25,673 INFO L288 CegarLoopForPetriNet]: 145 programPoint places, 8 predicate places. [2022-11-21 13:55:25,674 INFO L495 AbstractCegarLoop]: Abstraction has has 153 places, 146 transitions, 578 flow [2022-11-21 13:55:25,674 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) [2022-11-21 13:55:25,674 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 13:55:25,675 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 13:55:25,675 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-21 13:55:25,675 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)] === [2022-11-21 13:55:25,676 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 13:55:25,676 INFO L85 PathProgramCache]: Analyzing trace with hash -1659956136, now seen corresponding path program 1 times [2022-11-21 13:55:25,676 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 13:55:25,677 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [133150797] [2022-11-21 13:55:25,678 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 13:55:25,678 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 13:55:25,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:55:26,078 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 13:55:26,079 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 13:55:26,080 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [133150797] [2022-11-21 13:55:26,080 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [133150797] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 13:55:26,080 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 13:55:26,081 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-21 13:55:26,081 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [273333059] [2022-11-21 13:55:26,081 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 13:55:26,082 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-21 13:55:26,082 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 13:55:26,083 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-21 13:55:26,083 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-11-21 13:55:26,085 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 106 out of 138 [2022-11-21 13:55:26,086 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 153 places, 146 transitions, 578 flow. Second operand has 7 states, 7 states have (on average 108.85714285714286) internal successors, (762), 7 states have internal predecessors, (762), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 13:55:26,086 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 13:55:26,087 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 106 of 138 [2022-11-21 13:55:26,087 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 13:55:29,193 INFO L130 PetriNetUnfolder]: 6626/15899 cut-off events. [2022-11-21 13:55:29,193 INFO L131 PetriNetUnfolder]: For 27644/30347 co-relation queries the response was YES. [2022-11-21 13:55:29,280 INFO L83 FinitePrefix]: Finished finitePrefix Result has 46741 conditions, 15899 events. 6626/15899 cut-off events. For 27644/30347 co-relation queries the response was YES. Maximal size of possible extension queue 937. Compared 170114 event pairs, 2195 based on Foata normal form. 337/15256 useless extension candidates. Maximal degree in co-relation 46659. Up to 3187 conditions per place. [2022-11-21 13:55:29,390 INFO L137 encePairwiseOnDemand]: 127/138 looper letters, 92 selfloop transitions, 22 changer transitions 0/221 dead transitions. [2022-11-21 13:55:29,390 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 162 places, 221 transitions, 1249 flow [2022-11-21 13:55:29,391 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-21 13:55:29,391 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-11-21 13:55:29,394 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1165 transitions. [2022-11-21 13:55:29,395 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8442028985507246 [2022-11-21 13:55:29,395 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1165 transitions. [2022-11-21 13:55:29,395 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1165 transitions. [2022-11-21 13:55:29,396 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 13:55:29,396 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1165 transitions. [2022-11-21 13:55:29,399 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 116.5) internal successors, (1165), 10 states have internal predecessors, (1165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 13:55:29,402 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) [2022-11-21 13:55:29,403 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) [2022-11-21 13:55:29,404 INFO L175 Difference]: Start difference. First operand has 153 places, 146 transitions, 578 flow. Second operand 10 states and 1165 transitions. [2022-11-21 13:55:29,404 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 162 places, 221 transitions, 1249 flow [2022-11-21 13:55:29,512 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 161 places, 221 transitions, 1247 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-21 13:55:29,516 INFO L231 Difference]: Finished difference. Result has 169 places, 158 transitions, 771 flow [2022-11-21 13:55:29,517 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=138, PETRI_DIFFERENCE_MINUEND_FLOW=576, PETRI_DIFFERENCE_MINUEND_PLACES=152, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=146, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=130, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=771, PETRI_PLACES=169, PETRI_TRANSITIONS=158} [2022-11-21 13:55:29,517 INFO L288 CegarLoopForPetriNet]: 145 programPoint places, 24 predicate places. [2022-11-21 13:55:29,518 INFO L495 AbstractCegarLoop]: Abstraction has has 169 places, 158 transitions, 771 flow [2022-11-21 13:55:29,518 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 108.85714285714286) internal successors, (762), 7 states have internal predecessors, (762), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 13:55:29,519 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 13:55:29,519 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 13:55:29,519 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-21 13:55:29,519 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)] === [2022-11-21 13:55:29,521 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 13:55:29,521 INFO L85 PathProgramCache]: Analyzing trace with hash 22632084, now seen corresponding path program 1 times [2022-11-21 13:55:29,521 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 13:55:29,522 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1664628952] [2022-11-21 13:55:29,522 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 13:55:29,522 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 13:55:29,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:55:29,879 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 13:55:29,880 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 13:55:29,880 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1664628952] [2022-11-21 13:55:29,880 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1664628952] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 13:55:29,880 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 13:55:29,881 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-21 13:55:29,881 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1199684651] [2022-11-21 13:55:29,881 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 13:55:29,881 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-21 13:55:29,882 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 13:55:29,882 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-21 13:55:29,882 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-11-21 13:55:29,883 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 111 out of 138 [2022-11-21 13:55:29,885 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 169 places, 158 transitions, 771 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) [2022-11-21 13:55:29,885 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 13:55:29,885 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 111 of 138 [2022-11-21 13:55:29,885 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 13:55:37,304 INFO L130 PetriNetUnfolder]: 19704/35910 cut-off events. [2022-11-21 13:55:37,304 INFO L131 PetriNetUnfolder]: For 67444/74368 co-relation queries the response was YES. [2022-11-21 13:55:37,476 INFO L83 FinitePrefix]: Finished finitePrefix Result has 112197 conditions, 35910 events. 19704/35910 cut-off events. For 67444/74368 co-relation queries the response was YES. Maximal size of possible extension queue 2124. Compared 342568 event pairs, 1310 based on Foata normal form. 642/35436 useless extension candidates. Maximal degree in co-relation 112107. Up to 7419 conditions per place. [2022-11-21 13:55:37,546 INFO L137 encePairwiseOnDemand]: 127/138 looper letters, 121 selfloop transitions, 38 changer transitions 0/275 dead transitions. [2022-11-21 13:55:37,546 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 181 places, 275 transitions, 1679 flow [2022-11-21 13:55:37,547 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-21 13:55:37,547 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2022-11-21 13:55:37,550 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1587 transitions. [2022-11-21 13:55:37,551 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8846153846153846 [2022-11-21 13:55:37,551 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 1587 transitions. [2022-11-21 13:55:37,551 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 1587 transitions. [2022-11-21 13:55:37,552 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 13:55:37,552 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 1587 transitions. [2022-11-21 13:55:37,556 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 122.07692307692308) internal successors, (1587), 13 states have internal predecessors, (1587), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 13:55:37,559 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) [2022-11-21 13:55:37,560 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) [2022-11-21 13:55:37,561 INFO L175 Difference]: Start difference. First operand has 169 places, 158 transitions, 771 flow. Second operand 13 states and 1587 transitions. [2022-11-21 13:55:37,561 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 181 places, 275 transitions, 1679 flow [2022-11-21 13:55:38,091 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 181 places, 275 transitions, 1653 flow, removed 13 selfloop flow, removed 0 redundant places. [2022-11-21 13:55:38,094 INFO L231 Difference]: Finished difference. Result has 187 places, 178 transitions, 1038 flow [2022-11-21 13:55:38,095 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=138, PETRI_DIFFERENCE_MINUEND_FLOW=745, PETRI_DIFFERENCE_MINUEND_PLACES=169, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=158, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=132, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=1038, PETRI_PLACES=187, PETRI_TRANSITIONS=178} [2022-11-21 13:55:38,096 INFO L288 CegarLoopForPetriNet]: 145 programPoint places, 42 predicate places. [2022-11-21 13:55:38,096 INFO L495 AbstractCegarLoop]: Abstraction has has 187 places, 178 transitions, 1038 flow [2022-11-21 13:55:38,096 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has 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) [2022-11-21 13:55:38,096 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 13:55:38,097 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 13:55:38,097 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-21 13:55:38,097 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)] === [2022-11-21 13:55:38,098 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 13:55:38,098 INFO L85 PathProgramCache]: Analyzing trace with hash -1203932385, now seen corresponding path program 1 times [2022-11-21 13:55:38,098 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 13:55:38,098 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1543192891] [2022-11-21 13:55:38,098 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 13:55:38,098 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 13:55:38,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:55:38,650 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 13:55:38,650 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 13:55:38,651 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1543192891] [2022-11-21 13:55:38,651 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1543192891] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 13:55:38,651 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 13:55:38,651 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-21 13:55:38,656 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [566203022] [2022-11-21 13:55:38,656 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 13:55:38,658 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-21 13:55:38,658 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 13:55:38,659 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-21 13:55:38,660 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-11-21 13:55:38,661 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 111 out of 138 [2022-11-21 13:55:38,662 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 187 places, 178 transitions, 1038 flow. Second operand has 8 states, 8 states have (on average 113.125) internal successors, (905), 8 states have internal predecessors, (905), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 13:55:38,662 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 13:55:38,662 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 111 of 138 [2022-11-21 13:55:38,662 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 13:55:45,118 INFO L130 PetriNetUnfolder]: 18520/34074 cut-off events. [2022-11-21 13:55:45,118 INFO L131 PetriNetUnfolder]: For 115889/121323 co-relation queries the response was YES. [2022-11-21 13:55:45,484 INFO L83 FinitePrefix]: Finished finitePrefix Result has 127379 conditions, 34074 events. 18520/34074 cut-off events. For 115889/121323 co-relation queries the response was YES. Maximal size of possible extension queue 2074. Compared 329422 event pairs, 1125 based on Foata normal form. 388/33435 useless extension candidates. Maximal degree in co-relation 127280. Up to 7104 conditions per place. [2022-11-21 13:55:45,563 INFO L137 encePairwiseOnDemand]: 127/138 looper letters, 114 selfloop transitions, 58 changer transitions 43/323 dead transitions. [2022-11-21 13:55:45,564 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 202 places, 323 transitions, 2359 flow [2022-11-21 13:55:45,564 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-11-21 13:55:45,565 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2022-11-21 13:55:45,569 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 1956 transitions. [2022-11-21 13:55:45,570 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8858695652173914 [2022-11-21 13:55:45,570 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 1956 transitions. [2022-11-21 13:55:45,571 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 1956 transitions. [2022-11-21 13:55:45,572 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 13:55:45,572 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 1956 transitions. [2022-11-21 13:55:45,578 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 122.25) internal successors, (1956), 16 states have internal predecessors, (1956), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 13:55:45,586 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 138.0) internal successors, (2346), 17 states have internal predecessors, (2346), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 13:55:45,588 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 138.0) internal successors, (2346), 17 states have internal predecessors, (2346), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 13:55:45,588 INFO L175 Difference]: Start difference. First operand has 187 places, 178 transitions, 1038 flow. Second operand 16 states and 1956 transitions. [2022-11-21 13:55:45,588 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 202 places, 323 transitions, 2359 flow [2022-11-21 13:55:52,933 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 197 places, 323 transitions, 2248 flow, removed 43 selfloop flow, removed 5 redundant places. [2022-11-21 13:55:52,937 INFO L231 Difference]: Finished difference. Result has 201 places, 196 transitions, 1312 flow [2022-11-21 13:55:52,938 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=138, PETRI_DIFFERENCE_MINUEND_FLOW=935, PETRI_DIFFERENCE_MINUEND_PLACES=182, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=178, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=134, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=1312, PETRI_PLACES=201, PETRI_TRANSITIONS=196} [2022-11-21 13:55:52,938 INFO L288 CegarLoopForPetriNet]: 145 programPoint places, 56 predicate places. [2022-11-21 13:55:52,938 INFO L495 AbstractCegarLoop]: Abstraction has has 201 places, 196 transitions, 1312 flow [2022-11-21 13:55:52,939 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 113.125) internal successors, (905), 8 states have internal predecessors, (905), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 13:55:52,939 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 13:55:52,940 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 13:55:52,940 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-21 13:55:52,940 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)] === [2022-11-21 13:55:52,940 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 13:55:52,941 INFO L85 PathProgramCache]: Analyzing trace with hash -2081620670, now seen corresponding path program 1 times [2022-11-21 13:55:52,941 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 13:55:52,941 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1147613419] [2022-11-21 13:55:52,941 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 13:55:52,941 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 13:55:53,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:55:54,378 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 13:55:54,378 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 13:55:54,378 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1147613419] [2022-11-21 13:55:54,378 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1147613419] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 13:55:54,378 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 13:55:54,378 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-11-21 13:55:54,379 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [654695739] [2022-11-21 13:55:54,379 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 13:55:54,379 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-21 13:55:54,379 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 13:55:54,379 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-21 13:55:54,380 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2022-11-21 13:55:54,381 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 97 out of 138 [2022-11-21 13:55:54,382 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 201 places, 196 transitions, 1312 flow. Second operand has 12 states, 12 states have (on average 99.83333333333333) internal successors, (1198), 12 states have internal predecessors, (1198), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 13:55:54,382 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 13:55:54,383 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 97 of 138 [2022-11-21 13:55:54,383 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 13:55:58,534 INFO L130 PetriNetUnfolder]: 6641/20579 cut-off events. [2022-11-21 13:55:58,534 INFO L131 PetriNetUnfolder]: For 102295/109531 co-relation queries the response was YES. [2022-11-21 13:55:58,681 INFO L83 FinitePrefix]: Finished finitePrefix Result has 79855 conditions, 20579 events. 6641/20579 cut-off events. For 102295/109531 co-relation queries the response was YES. Maximal size of possible extension queue 2503. Compared 284390 event pairs, 161 based on Foata normal form. 20/19375 useless extension candidates. Maximal degree in co-relation 79739. Up to 4722 conditions per place. [2022-11-21 13:55:58,764 INFO L137 encePairwiseOnDemand]: 118/138 looper letters, 98 selfloop transitions, 59 changer transitions 31/332 dead transitions. [2022-11-21 13:55:58,765 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 212 places, 332 transitions, 2606 flow [2022-11-21 13:55:58,767 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-11-21 13:55:58,767 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-11-21 13:55:58,770 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 1911 transitions. [2022-11-21 13:55:58,771 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7693236714975845 [2022-11-21 13:55:58,771 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 1911 transitions. [2022-11-21 13:55:58,771 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 1911 transitions. [2022-11-21 13:55:58,773 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 13:55:58,773 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 1911 transitions. [2022-11-21 13:55:58,778 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 106.16666666666667) internal successors, (1911), 18 states have internal predecessors, (1911), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 13:55:58,783 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 138.0) internal successors, (2622), 19 states have internal predecessors, (2622), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 13:55:58,784 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 138.0) internal successors, (2622), 19 states have internal predecessors, (2622), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 13:55:58,784 INFO L175 Difference]: Start difference. First operand has 201 places, 196 transitions, 1312 flow. Second operand 18 states and 1911 transitions. [2022-11-21 13:55:58,785 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 212 places, 332 transitions, 2606 flow [2022-11-21 13:56:07,260 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 195 places, 332 transitions, 2205 flow, removed 158 selfloop flow, removed 17 redundant places. [2022-11-21 13:56:07,264 INFO L231 Difference]: Finished difference. Result has 206 places, 235 transitions, 1582 flow [2022-11-21 13:56:07,264 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=138, PETRI_DIFFERENCE_MINUEND_FLOW=987, PETRI_DIFFERENCE_MINUEND_PLACES=178, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=196, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=167, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=1582, PETRI_PLACES=206, PETRI_TRANSITIONS=235} [2022-11-21 13:56:07,265 INFO L288 CegarLoopForPetriNet]: 145 programPoint places, 61 predicate places. [2022-11-21 13:56:07,265 INFO L495 AbstractCegarLoop]: Abstraction has has 206 places, 235 transitions, 1582 flow [2022-11-21 13:56:07,266 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 99.83333333333333) internal successors, (1198), 12 states have internal predecessors, (1198), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 13:56:07,266 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 13:56:07,266 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 13:56:07,267 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-21 13:56:07,267 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-11-21 13:56:07,267 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 13:56:07,267 INFO L85 PathProgramCache]: Analyzing trace with hash -1446999060, now seen corresponding path program 2 times [2022-11-21 13:56:07,268 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 13:56:07,268 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [121985553] [2022-11-21 13:56:07,268 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 13:56:07,268 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 13:56:07,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:56:08,258 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 13:56:08,258 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 13:56:08,258 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [121985553] [2022-11-21 13:56:08,258 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [121985553] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 13:56:08,259 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 13:56:08,259 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-11-21 13:56:08,259 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1665952597] [2022-11-21 13:56:08,259 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 13:56:08,259 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-21 13:56:08,259 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 13:56:08,260 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-21 13:56:08,260 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2022-11-21 13:56:08,261 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 100 out of 138 [2022-11-21 13:56:08,262 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 206 places, 235 transitions, 1582 flow. Second operand has 11 states, 11 states have (on average 102.81818181818181) internal successors, (1131), 11 states have internal predecessors, (1131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 13:56:08,262 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 13:56:08,262 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 100 of 138 [2022-11-21 13:56:08,263 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 13:56:12,858 INFO L130 PetriNetUnfolder]: 9239/28963 cut-off events. [2022-11-21 13:56:12,859 INFO L131 PetriNetUnfolder]: For 59816/60969 co-relation queries the response was YES. [2022-11-21 13:56:13,016 INFO L83 FinitePrefix]: Finished finitePrefix Result has 83295 conditions, 28963 events. 9239/28963 cut-off events. For 59816/60969 co-relation queries the response was YES. Maximal size of possible extension queue 3364. Compared 420894 event pairs, 215 based on Foata normal form. 39/27348 useless extension candidates. Maximal degree in co-relation 83176. Up to 2920 conditions per place. [2022-11-21 13:56:13,081 INFO L137 encePairwiseOnDemand]: 119/138 looper letters, 107 selfloop transitions, 77 changer transitions 27/358 dead transitions. [2022-11-21 13:56:13,081 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 214 places, 358 transitions, 3252 flow [2022-11-21 13:56:13,081 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-21 13:56:13,082 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2022-11-21 13:56:13,085 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 1644 transitions. [2022-11-21 13:56:13,086 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7942028985507247 [2022-11-21 13:56:13,086 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 1644 transitions. [2022-11-21 13:56:13,086 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 1644 transitions. [2022-11-21 13:56:13,087 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 13:56:13,087 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 1644 transitions. [2022-11-21 13:56:13,091 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 109.6) internal successors, (1644), 15 states have internal predecessors, (1644), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 13:56:13,095 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 138.0) internal successors, (2208), 16 states have internal predecessors, (2208), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 13:56:13,096 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 138.0) internal successors, (2208), 16 states have internal predecessors, (2208), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 13:56:13,097 INFO L175 Difference]: Start difference. First operand has 206 places, 235 transitions, 1582 flow. Second operand 15 states and 1644 transitions. [2022-11-21 13:56:13,097 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 214 places, 358 transitions, 3252 flow