./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/pthread-wmm/mix047_power.opt_pso.opt_rmo.opt_tso.oepc_tso.opt.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version b5237d83 Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71ebac38-0233-4737-9942-27afb41bdc0e/bin/uautomizer-vX5HgA9Q3a/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71ebac38-0233-4737-9942-27afb41bdc0e/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_71ebac38-0233-4737-9942-27afb41bdc0e/bin/uautomizer-vX5HgA9Q3a/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71ebac38-0233-4737-9942-27afb41bdc0e/bin/uautomizer-vX5HgA9Q3a/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread-wmm/mix047_power.opt_pso.opt_rmo.opt_tso.oepc_tso.opt.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71ebac38-0233-4737-9942-27afb41bdc0e/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_71ebac38-0233-4737-9942-27afb41bdc0e/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 473191b5f1326a38296af26dcd2c7f553c42833f82b512e9fb358484309bc769 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-b5237d8 [2022-11-21 14:03:39,008 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-21 14:03:39,011 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-21 14:03:39,055 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-21 14:03:39,057 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-21 14:03:39,062 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-21 14:03:39,068 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-21 14:03:39,073 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-21 14:03:39,076 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-21 14:03:39,083 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-21 14:03:39,085 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-21 14:03:39,088 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-21 14:03:39,089 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-21 14:03:39,092 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-21 14:03:39,095 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-21 14:03:39,098 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-21 14:03:39,100 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-21 14:03:39,102 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-21 14:03:39,103 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-21 14:03:39,111 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-21 14:03:39,114 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-21 14:03:39,117 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-21 14:03:39,119 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-21 14:03:39,120 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-21 14:03:39,131 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-21 14:03:39,133 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-21 14:03:39,133 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-21 14:03:39,134 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-21 14:03:39,137 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-21 14:03:39,140 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-21 14:03:39,140 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-21 14:03:39,141 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-21 14:03:39,144 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-21 14:03:39,145 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-21 14:03:39,148 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-21 14:03:39,149 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-21 14:03:39,151 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-21 14:03:39,151 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-21 14:03:39,151 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-21 14:03:39,154 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-21 14:03:39,154 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-21 14:03:39,156 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71ebac38-0233-4737-9942-27afb41bdc0e/bin/uautomizer-vX5HgA9Q3a/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-11-21 14:03:39,202 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-21 14:03:39,202 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-21 14:03:39,203 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-21 14:03:39,203 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-21 14:03:39,205 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-21 14:03:39,205 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-21 14:03:39,206 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-21 14:03:39,206 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-21 14:03:39,207 INFO L138 SettingsManager]: * Use SBE=true [2022-11-21 14:03:39,207 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-21 14:03:39,208 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-21 14:03:39,209 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-21 14:03:39,209 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-21 14:03:39,209 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-21 14:03:39,210 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-21 14:03:39,210 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-21 14:03:39,210 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-21 14:03:39,210 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-21 14:03:39,211 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-21 14:03:39,211 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-21 14:03:39,211 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-21 14:03:39,212 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-21 14:03:39,212 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-21 14:03:39,212 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-21 14:03:39,212 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-21 14:03:39,213 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-21 14:03:39,213 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-21 14:03:39,213 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-21 14:03:39,214 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-21 14:03:39,215 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-21 14:03:39,215 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-21 14:03:39,215 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-21 14:03:39,216 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-21 14:03:39,216 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_71ebac38-0233-4737-9942-27afb41bdc0e/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71ebac38-0233-4737-9942-27afb41bdc0e/bin/uautomizer-vX5HgA9Q3a Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 473191b5f1326a38296af26dcd2c7f553c42833f82b512e9fb358484309bc769 [2022-11-21 14:03:39,637 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-21 14:03:39,667 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-21 14:03:39,672 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-21 14:03:39,673 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-21 14:03:39,674 INFO L275 PluginConnector]: CDTParser initialized [2022-11-21 14:03:39,675 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71ebac38-0233-4737-9942-27afb41bdc0e/bin/uautomizer-vX5HgA9Q3a/../../sv-benchmarks/c/pthread-wmm/mix047_power.opt_pso.opt_rmo.opt_tso.oepc_tso.opt.i [2022-11-21 14:03:42,948 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-21 14:03:43,324 INFO L351 CDTParser]: Found 1 translation units. [2022-11-21 14:03:43,325 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71ebac38-0233-4737-9942-27afb41bdc0e/sv-benchmarks/c/pthread-wmm/mix047_power.opt_pso.opt_rmo.opt_tso.oepc_tso.opt.i [2022-11-21 14:03:43,363 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71ebac38-0233-4737-9942-27afb41bdc0e/bin/uautomizer-vX5HgA9Q3a/data/26164e281/b6b6efa4ed9b41abab381eac66df237a/FLAGbff50c5cb [2022-11-21 14:03:43,383 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71ebac38-0233-4737-9942-27afb41bdc0e/bin/uautomizer-vX5HgA9Q3a/data/26164e281/b6b6efa4ed9b41abab381eac66df237a [2022-11-21 14:03:43,386 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-21 14:03:43,389 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-21 14:03:43,392 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-21 14:03:43,392 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-21 14:03:43,396 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-21 14:03:43,397 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 02:03:43" (1/1) ... [2022-11-21 14:03:43,398 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@75f7e229 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 02:03:43, skipping insertion in model container [2022-11-21 14:03:43,399 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 02:03:43" (1/1) ... [2022-11-21 14:03:43,407 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-21 14:03:43,468 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-21 14:03:43,748 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_71ebac38-0233-4737-9942-27afb41bdc0e/sv-benchmarks/c/pthread-wmm/mix047_power.opt_pso.opt_rmo.opt_tso.oepc_tso.opt.i[983,996] [2022-11-21 14:03:44,074 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-21 14:03:44,087 INFO L203 MainTranslator]: Completed pre-run [2022-11-21 14:03:44,102 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_71ebac38-0233-4737-9942-27afb41bdc0e/sv-benchmarks/c/pthread-wmm/mix047_power.opt_pso.opt_rmo.opt_tso.oepc_tso.opt.i[983,996] [2022-11-21 14:03:44,188 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-21 14:03:44,238 INFO L208 MainTranslator]: Completed translation [2022-11-21 14:03:44,239 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 02:03:44 WrapperNode [2022-11-21 14:03:44,239 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-21 14:03:44,241 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-21 14:03:44,241 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-21 14:03:44,241 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-21 14:03:44,251 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 02:03:44" (1/1) ... [2022-11-21 14:03:44,277 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 02:03:44" (1/1) ... [2022-11-21 14:03:44,318 INFO L138 Inliner]: procedures = 177, calls = 71, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 165 [2022-11-21 14:03:44,318 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-21 14:03:44,323 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-21 14:03:44,324 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-21 14:03:44,324 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-21 14:03:44,336 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 02:03:44" (1/1) ... [2022-11-21 14:03:44,337 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 02:03:44" (1/1) ... [2022-11-21 14:03:44,342 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 02:03:44" (1/1) ... [2022-11-21 14:03:44,342 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 02:03:44" (1/1) ... [2022-11-21 14:03:44,353 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 02:03:44" (1/1) ... [2022-11-21 14:03:44,356 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 02:03:44" (1/1) ... [2022-11-21 14:03:44,359 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 02:03:44" (1/1) ... [2022-11-21 14:03:44,361 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 02:03:44" (1/1) ... [2022-11-21 14:03:44,366 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-21 14:03:44,367 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-21 14:03:44,367 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-21 14:03:44,368 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-21 14:03:44,369 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 02:03:44" (1/1) ... [2022-11-21 14:03:44,377 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-21 14:03:44,393 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71ebac38-0233-4737-9942-27afb41bdc0e/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 14:03:44,409 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71ebac38-0233-4737-9942-27afb41bdc0e/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-21 14:03:44,429 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71ebac38-0233-4737-9942-27afb41bdc0e/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-21 14:03:44,478 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-21 14:03:44,479 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-11-21 14:03:44,479 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-21 14:03:44,479 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-21 14:03:44,479 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-21 14:03:44,480 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2022-11-21 14:03:44,481 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2022-11-21 14:03:44,483 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2022-11-21 14:03:44,484 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2022-11-21 14:03:44,485 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2022-11-21 14:03:44,485 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2022-11-21 14:03:44,485 INFO L130 BoogieDeclarations]: Found specification of procedure P3 [2022-11-21 14:03:44,485 INFO L138 BoogieDeclarations]: Found implementation of procedure P3 [2022-11-21 14:03:44,486 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-21 14:03:44,486 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-11-21 14:03:44,486 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-21 14:03:44,486 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-21 14:03:44,489 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-21 14:03:44,762 INFO L235 CfgBuilder]: Building ICFG [2022-11-21 14:03:44,764 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-21 14:03:45,311 INFO L276 CfgBuilder]: Performing block encoding [2022-11-21 14:03:45,421 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-21 14:03:45,422 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-11-21 14:03:45,424 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 02:03:45 BoogieIcfgContainer [2022-11-21 14:03:45,424 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-21 14:03:45,427 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-21 14:03:45,427 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-21 14:03:45,430 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-21 14:03:45,431 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.11 02:03:43" (1/3) ... [2022-11-21 14:03:45,431 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@58339919 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 02:03:45, skipping insertion in model container [2022-11-21 14:03:45,432 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 02:03:44" (2/3) ... [2022-11-21 14:03:45,432 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@58339919 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 02:03:45, skipping insertion in model container [2022-11-21 14:03:45,432 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 02:03:45" (3/3) ... [2022-11-21 14:03:45,434 INFO L112 eAbstractionObserver]: Analyzing ICFG mix047_power.opt_pso.opt_rmo.opt_tso.oepc_tso.opt.i [2022-11-21 14:03:45,443 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-21 14:03:45,455 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-21 14:03:45,456 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-11-21 14:03:45,456 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-21 14:03:45,544 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-11-21 14:03:45,625 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 147 places, 136 transitions, 292 flow [2022-11-21 14:03:45,734 INFO L130 PetriNetUnfolder]: 2/132 cut-off events. [2022-11-21 14:03:45,735 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-21 14:03:45,741 INFO L83 FinitePrefix]: Finished finitePrefix Result has 145 conditions, 132 events. 2/132 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. 0/128 useless extension candidates. Maximal degree in co-relation 91. Up to 2 conditions per place. [2022-11-21 14:03:45,741 INFO L82 GeneralOperation]: Start removeDead. Operand has 147 places, 136 transitions, 292 flow [2022-11-21 14:03:45,751 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 143 places, 132 transitions, 276 flow [2022-11-21 14:03:45,766 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-21 14:03:45,774 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;@4a6cbf4, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-21 14:03:45,774 INFO L358 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2022-11-21 14:03:45,798 INFO L130 PetriNetUnfolder]: 0/90 cut-off events. [2022-11-21 14:03:45,798 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-21 14:03:45,798 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 14:03:45,799 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] [2022-11-21 14:03:45,800 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting P3Err0ASSERT_VIOLATIONERROR_FUNCTION === [P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-11-21 14:03:45,805 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 14:03:45,806 INFO L85 PathProgramCache]: Analyzing trace with hash 1921341269, now seen corresponding path program 1 times [2022-11-21 14:03:45,817 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 14:03:45,817 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [446161908] [2022-11-21 14:03:45,818 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 14:03:45,818 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 14:03:46,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:03:46,752 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 14:03:46,753 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 14:03:46,754 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [446161908] [2022-11-21 14:03:46,755 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [446161908] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 14:03:46,755 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 14:03:46,756 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-21 14:03:46,758 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [302705425] [2022-11-21 14:03:46,758 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 14:03:46,770 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-21 14:03:46,770 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 14:03:46,805 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-21 14:03:46,809 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-21 14:03:46,814 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 122 out of 136 [2022-11-21 14:03:46,821 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 143 places, 132 transitions, 276 flow. Second operand has 3 states, 3 states have (on average 124.0) internal successors, (372), 3 states have internal predecessors, (372), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 14:03:46,823 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 14:03:46,823 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 122 of 136 [2022-11-21 14:03:46,825 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 14:03:47,002 INFO L130 PetriNetUnfolder]: 17/214 cut-off events. [2022-11-21 14:03:47,003 INFO L131 PetriNetUnfolder]: For 5/5 co-relation queries the response was YES. [2022-11-21 14:03:47,007 INFO L83 FinitePrefix]: Finished finitePrefix Result has 270 conditions, 214 events. 17/214 cut-off events. For 5/5 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 502 event pairs, 3 based on Foata normal form. 9/216 useless extension candidates. Maximal degree in co-relation 213. Up to 27 conditions per place. [2022-11-21 14:03:47,010 INFO L137 encePairwiseOnDemand]: 131/136 looper letters, 11 selfloop transitions, 2 changer transitions 0/131 dead transitions. [2022-11-21 14:03:47,010 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 143 places, 131 transitions, 300 flow [2022-11-21 14:03:47,012 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-21 14:03:47,015 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-21 14:03:47,022 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 384 transitions. [2022-11-21 14:03:47,025 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9411764705882353 [2022-11-21 14:03:47,026 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 384 transitions. [2022-11-21 14:03:47,026 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 384 transitions. [2022-11-21 14:03:47,028 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 14:03:47,032 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 384 transitions. [2022-11-21 14:03:47,036 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 128.0) internal successors, (384), 3 states have internal predecessors, (384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 14:03:47,043 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 136.0) internal successors, (544), 4 states have internal predecessors, (544), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 14:03:47,044 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 136.0) internal successors, (544), 4 states have internal predecessors, (544), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 14:03:47,046 INFO L175 Difference]: Start difference. First operand has 143 places, 132 transitions, 276 flow. Second operand 3 states and 384 transitions. [2022-11-21 14:03:47,048 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 143 places, 131 transitions, 300 flow [2022-11-21 14:03:47,051 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 139 places, 131 transitions, 296 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-11-21 14:03:47,056 INFO L231 Difference]: Finished difference. Result has 139 places, 128 transitions, 268 flow [2022-11-21 14:03:47,058 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=136, PETRI_DIFFERENCE_MINUEND_FLOW=264, PETRI_DIFFERENCE_MINUEND_PLACES=137, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=128, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=126, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=268, PETRI_PLACES=139, PETRI_TRANSITIONS=128} [2022-11-21 14:03:47,065 INFO L288 CegarLoopForPetriNet]: 143 programPoint places, -4 predicate places. [2022-11-21 14:03:47,065 INFO L495 AbstractCegarLoop]: Abstraction has has 139 places, 128 transitions, 268 flow [2022-11-21 14:03:47,066 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 124.0) internal successors, (372), 3 states have internal predecessors, (372), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 14:03:47,066 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 14:03:47,066 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 14:03:47,066 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-21 14:03:47,067 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-11-21 14:03:47,067 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 14:03:47,068 INFO L85 PathProgramCache]: Analyzing trace with hash 537188533, now seen corresponding path program 1 times [2022-11-21 14:03:47,068 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 14:03:47,069 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1267096225] [2022-11-21 14:03:47,069 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 14:03:47,069 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 14:03:47,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:03:48,046 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 14:03:48,046 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 14:03:48,046 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1267096225] [2022-11-21 14:03:48,047 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1267096225] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 14:03:48,047 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 14:03:48,047 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-21 14:03:48,047 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [258010186] [2022-11-21 14:03:48,047 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 14:03:48,049 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-21 14:03:48,049 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 14:03:48,049 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-21 14:03:48,050 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-11-21 14:03:48,051 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 99 out of 136 [2022-11-21 14:03:48,052 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 139 places, 128 transitions, 268 flow. Second operand has 7 states, 7 states have (on average 102.14285714285714) internal successors, (715), 7 states have internal predecessors, (715), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 14:03:48,052 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 14:03:48,052 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 99 of 136 [2022-11-21 14:03:48,053 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 14:03:52,079 INFO L130 PetriNetUnfolder]: 5568/14173 cut-off events. [2022-11-21 14:03:52,080 INFO L131 PetriNetUnfolder]: For 454/454 co-relation queries the response was YES. [2022-11-21 14:03:52,163 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22693 conditions, 14173 events. 5568/14173 cut-off events. For 454/454 co-relation queries the response was YES. Maximal size of possible extension queue 679. Compared 145606 event pairs, 975 based on Foata normal form. 0/13827 useless extension candidates. Maximal degree in co-relation 22627. Up to 2981 conditions per place. [2022-11-21 14:03:52,221 INFO L137 encePairwiseOnDemand]: 119/136 looper letters, 47 selfloop transitions, 15 changer transitions 116/260 dead transitions. [2022-11-21 14:03:52,221 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 151 places, 260 transitions, 894 flow [2022-11-21 14:03:52,223 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-21 14:03:52,223 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2022-11-21 14:03:52,228 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1455 transitions. [2022-11-21 14:03:52,230 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8229638009049773 [2022-11-21 14:03:52,230 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 1455 transitions. [2022-11-21 14:03:52,231 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 1455 transitions. [2022-11-21 14:03:52,232 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 14:03:52,233 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 1455 transitions. [2022-11-21 14:03:52,239 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 111.92307692307692) internal successors, (1455), 13 states have internal predecessors, (1455), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 14:03:52,246 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 136.0) internal successors, (1904), 14 states have internal predecessors, (1904), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 14:03:52,247 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 136.0) internal successors, (1904), 14 states have internal predecessors, (1904), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 14:03:52,248 INFO L175 Difference]: Start difference. First operand has 139 places, 128 transitions, 268 flow. Second operand 13 states and 1455 transitions. [2022-11-21 14:03:52,248 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 151 places, 260 transitions, 894 flow [2022-11-21 14:03:52,253 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 149 places, 260 transitions, 868 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-21 14:03:52,258 INFO L231 Difference]: Finished difference. Result has 161 places, 126 transitions, 404 flow [2022-11-21 14:03:52,259 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=136, PETRI_DIFFERENCE_MINUEND_FLOW=264, PETRI_DIFFERENCE_MINUEND_PLACES=137, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=128, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=115, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=404, PETRI_PLACES=161, PETRI_TRANSITIONS=126} [2022-11-21 14:03:52,260 INFO L288 CegarLoopForPetriNet]: 143 programPoint places, 18 predicate places. [2022-11-21 14:03:52,260 INFO L495 AbstractCegarLoop]: Abstraction has has 161 places, 126 transitions, 404 flow [2022-11-21 14:03:52,261 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 102.14285714285714) internal successors, (715), 7 states have internal predecessors, (715), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 14:03:52,261 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 14:03:52,262 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 14:03:52,262 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-21 14:03:52,262 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-11-21 14:03:52,263 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 14:03:52,264 INFO L85 PathProgramCache]: Analyzing trace with hash -1366435372, now seen corresponding path program 1 times [2022-11-21 14:03:52,264 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 14:03:52,264 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1173547206] [2022-11-21 14:03:52,265 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 14:03:52,265 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 14:03:52,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:03:53,708 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 14:03:53,708 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 14:03:53,708 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1173547206] [2022-11-21 14:03:53,709 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1173547206] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 14:03:53,709 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 14:03:53,709 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-21 14:03:53,709 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1711224181] [2022-11-21 14:03:53,710 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 14:03:53,710 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-21 14:03:53,710 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 14:03:53,711 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-21 14:03:53,711 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2022-11-21 14:03:53,713 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 99 out of 136 [2022-11-21 14:03:53,715 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 161 places, 126 transitions, 404 flow. Second operand has 10 states, 10 states have (on average 101.3) internal successors, (1013), 10 states have internal predecessors, (1013), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 14:03:53,715 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 14:03:53,716 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 99 of 136 [2022-11-21 14:03:53,716 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 14:03:56,433 INFO L130 PetriNetUnfolder]: 3620/7288 cut-off events. [2022-11-21 14:03:56,434 INFO L131 PetriNetUnfolder]: For 16119/26560 co-relation queries the response was YES. [2022-11-21 14:03:56,475 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25328 conditions, 7288 events. 3620/7288 cut-off events. For 16119/26560 co-relation queries the response was YES. Maximal size of possible extension queue 423. Compared 58645 event pairs, 248 based on Foata normal form. 193/7345 useless extension candidates. Maximal degree in co-relation 25246. Up to 2525 conditions per place. [2022-11-21 14:03:56,522 INFO L137 encePairwiseOnDemand]: 114/136 looper letters, 64 selfloop transitions, 32 changer transitions 168/346 dead transitions. [2022-11-21 14:03:56,522 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 156 places, 346 transitions, 2424 flow [2022-11-21 14:03:56,523 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-11-21 14:03:56,524 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2022-11-21 14:03:56,527 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 2067 transitions. [2022-11-21 14:03:56,530 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7999226006191951 [2022-11-21 14:03:56,531 INFO L72 ComplementDD]: Start complementDD. Operand 19 states and 2067 transitions. [2022-11-21 14:03:56,531 INFO L73 IsDeterministic]: Start isDeterministic. Operand 19 states and 2067 transitions. [2022-11-21 14:03:56,533 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 14:03:56,533 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 19 states and 2067 transitions. [2022-11-21 14:03:56,538 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 20 states, 19 states have (on average 108.78947368421052) internal successors, (2067), 19 states have internal predecessors, (2067), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 14:03:56,545 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 20 states, 20 states have (on average 136.0) internal successors, (2720), 20 states have internal predecessors, (2720), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 14:03:56,547 INFO L81 ComplementDD]: Finished complementDD. Result has 20 states, 20 states have (on average 136.0) internal successors, (2720), 20 states have internal predecessors, (2720), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 14:03:56,548 INFO L175 Difference]: Start difference. First operand has 161 places, 126 transitions, 404 flow. Second operand 19 states and 2067 transitions. [2022-11-21 14:03:56,548 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 156 places, 346 transitions, 2424 flow [2022-11-21 14:03:56,635 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 153 places, 346 transitions, 2396 flow, removed 14 selfloop flow, removed 3 redundant places. [2022-11-21 14:03:56,641 INFO L231 Difference]: Finished difference. Result has 169 places, 148 transitions, 802 flow [2022-11-21 14:03:56,641 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=136, PETRI_DIFFERENCE_MINUEND_FLOW=398, PETRI_DIFFERENCE_MINUEND_PLACES=135, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=126, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=99, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=802, PETRI_PLACES=169, PETRI_TRANSITIONS=148} [2022-11-21 14:03:56,643 INFO L288 CegarLoopForPetriNet]: 143 programPoint places, 26 predicate places. [2022-11-21 14:03:56,643 INFO L495 AbstractCegarLoop]: Abstraction has has 169 places, 148 transitions, 802 flow [2022-11-21 14:03:56,644 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 101.3) internal successors, (1013), 10 states have internal predecessors, (1013), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 14:03:56,644 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 14:03:56,644 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] [2022-11-21 14:03:56,645 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-21 14:03:56,645 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-11-21 14:03:56,646 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 14:03:56,646 INFO L85 PathProgramCache]: Analyzing trace with hash -604385381, now seen corresponding path program 1 times [2022-11-21 14:03:56,646 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 14:03:56,647 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1621571707] [2022-11-21 14:03:56,647 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 14:03:56,647 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 14:03:56,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:03:57,316 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 14:03:57,317 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 14:03:57,317 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1621571707] [2022-11-21 14:03:57,317 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1621571707] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 14:03:57,317 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 14:03:57,317 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-21 14:03:57,318 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1692426593] [2022-11-21 14:03:57,318 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 14:03:57,318 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-21 14:03:57,318 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 14:03:57,319 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-21 14:03:57,319 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-11-21 14:03:57,320 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 99 out of 136 [2022-11-21 14:03:57,321 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 169 places, 148 transitions, 802 flow. Second operand has 7 states, 7 states have (on average 102.57142857142857) internal successors, (718), 7 states have internal predecessors, (718), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 14:03:57,321 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 14:03:57,321 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 99 of 136 [2022-11-21 14:03:57,321 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 14:03:59,295 INFO L130 PetriNetUnfolder]: 2260/5021 cut-off events. [2022-11-21 14:03:59,295 INFO L131 PetriNetUnfolder]: For 29042/54303 co-relation queries the response was YES. [2022-11-21 14:03:59,342 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24194 conditions, 5021 events. 2260/5021 cut-off events. For 29042/54303 co-relation queries the response was YES. Maximal size of possible extension queue 250. Compared 39902 event pairs, 252 based on Foata normal form. 92/4980 useless extension candidates. Maximal degree in co-relation 24087. Up to 1681 conditions per place. [2022-11-21 14:03:59,379 INFO L137 encePairwiseOnDemand]: 122/136 looper letters, 74 selfloop transitions, 22 changer transitions 76/254 dead transitions. [2022-11-21 14:03:59,379 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 169 places, 254 transitions, 2300 flow [2022-11-21 14:03:59,380 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-21 14:03:59,380 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2022-11-21 14:03:59,383 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1403 transitions. [2022-11-21 14:03:59,384 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.793552036199095 [2022-11-21 14:03:59,384 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 1403 transitions. [2022-11-21 14:03:59,384 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 1403 transitions. [2022-11-21 14:03:59,385 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 14:03:59,386 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 1403 transitions. [2022-11-21 14:03:59,389 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 107.92307692307692) internal successors, (1403), 13 states have internal predecessors, (1403), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 14:03:59,393 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 136.0) internal successors, (1904), 14 states have internal predecessors, (1904), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 14:03:59,394 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 136.0) internal successors, (1904), 14 states have internal predecessors, (1904), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 14:03:59,394 INFO L175 Difference]: Start difference. First operand has 169 places, 148 transitions, 802 flow. Second operand 13 states and 1403 transitions. [2022-11-21 14:03:59,394 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 169 places, 254 transitions, 2300 flow [2022-11-21 14:03:59,465 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 164 places, 254 transitions, 2236 flow, removed 30 selfloop flow, removed 5 redundant places. [2022-11-21 14:03:59,469 INFO L231 Difference]: Finished difference. Result has 176 places, 160 transitions, 1056 flow [2022-11-21 14:03:59,470 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=136, PETRI_DIFFERENCE_MINUEND_FLOW=780, PETRI_DIFFERENCE_MINUEND_PLACES=152, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=148, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=126, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=1056, PETRI_PLACES=176, PETRI_TRANSITIONS=160} [2022-11-21 14:03:59,471 INFO L288 CegarLoopForPetriNet]: 143 programPoint places, 33 predicate places. [2022-11-21 14:03:59,471 INFO L495 AbstractCegarLoop]: Abstraction has has 176 places, 160 transitions, 1056 flow [2022-11-21 14:03:59,471 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 102.57142857142857) internal successors, (718), 7 states have internal predecessors, (718), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 14:03:59,472 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 14:03:59,472 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 14:03:59,472 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-21 14:03:59,472 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-11-21 14:03:59,473 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 14:03:59,473 INFO L85 PathProgramCache]: Analyzing trace with hash -27799662, now seen corresponding path program 1 times [2022-11-21 14:03:59,474 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 14:03:59,474 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [840219547] [2022-11-21 14:03:59,474 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 14:03:59,474 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 14:03:59,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:03:59,962 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 14:03:59,962 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 14:03:59,963 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [840219547] [2022-11-21 14:03:59,963 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [840219547] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 14:03:59,964 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 14:03:59,964 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-21 14:03:59,964 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1351776260] [2022-11-21 14:03:59,964 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 14:03:59,966 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-21 14:03:59,966 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 14:03:59,967 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-21 14:03:59,967 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-21 14:03:59,969 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 114 out of 136 [2022-11-21 14:03:59,970 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 176 places, 160 transitions, 1056 flow. Second operand has 6 states, 6 states have (on average 116.33333333333333) internal successors, (698), 6 states have internal predecessors, (698), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 14:03:59,971 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 14:03:59,971 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 114 of 136 [2022-11-21 14:03:59,971 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 14:04:01,228 INFO L130 PetriNetUnfolder]: 1504/3457 cut-off events. [2022-11-21 14:04:01,228 INFO L131 PetriNetUnfolder]: For 31270/51237 co-relation queries the response was YES. [2022-11-21 14:04:01,273 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17978 conditions, 3457 events. 1504/3457 cut-off events. For 31270/51237 co-relation queries the response was YES. Maximal size of possible extension queue 183. Compared 26199 event pairs, 301 based on Foata normal form. 211/3431 useless extension candidates. Maximal degree in co-relation 17872. Up to 1383 conditions per place. [2022-11-21 14:04:01,307 INFO L137 encePairwiseOnDemand]: 129/136 looper letters, 49 selfloop transitions, 9 changer transitions 34/212 dead transitions. [2022-11-21 14:04:01,307 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 175 places, 212 transitions, 1894 flow [2022-11-21 14:04:01,308 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-21 14:04:01,309 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-11-21 14:04:01,312 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1074 transitions. [2022-11-21 14:04:01,313 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8774509803921569 [2022-11-21 14:04:01,313 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1074 transitions. [2022-11-21 14:04:01,314 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1074 transitions. [2022-11-21 14:04:01,315 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 14:04:01,315 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1074 transitions. [2022-11-21 14:04:01,318 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 119.33333333333333) internal successors, (1074), 9 states have internal predecessors, (1074), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 14:04:01,321 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 136.0) internal successors, (1360), 10 states have internal predecessors, (1360), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 14:04:01,324 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 136.0) internal successors, (1360), 10 states have internal predecessors, (1360), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 14:04:01,324 INFO L175 Difference]: Start difference. First operand has 176 places, 160 transitions, 1056 flow. Second operand 9 states and 1074 transitions. [2022-11-21 14:04:01,324 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 175 places, 212 transitions, 1894 flow [2022-11-21 14:04:01,392 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 168 places, 212 transitions, 1811 flow, removed 39 selfloop flow, removed 7 redundant places. [2022-11-21 14:04:01,396 INFO L231 Difference]: Finished difference. Result has 175 places, 168 transitions, 1194 flow [2022-11-21 14:04:01,396 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=136, PETRI_DIFFERENCE_MINUEND_FLOW=1009, PETRI_DIFFERENCE_MINUEND_PLACES=160, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=160, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=151, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1194, PETRI_PLACES=175, PETRI_TRANSITIONS=168} [2022-11-21 14:04:01,400 INFO L288 CegarLoopForPetriNet]: 143 programPoint places, 32 predicate places. [2022-11-21 14:04:01,401 INFO L495 AbstractCegarLoop]: Abstraction has has 175 places, 168 transitions, 1194 flow [2022-11-21 14:04:01,401 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 116.33333333333333) internal successors, (698), 6 states have internal predecessors, (698), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 14:04:01,402 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 14:04:01,402 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 14:04:01,402 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-21 14:04:01,402 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-11-21 14:04:01,406 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 14:04:01,407 INFO L85 PathProgramCache]: Analyzing trace with hash 1511319866, now seen corresponding path program 1 times [2022-11-21 14:04:01,407 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 14:04:01,407 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1782643486] [2022-11-21 14:04:01,407 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 14:04:01,408 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 14:04:01,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:04:02,092 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 14:04:02,092 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 14:04:02,092 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1782643486] [2022-11-21 14:04:02,092 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1782643486] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 14:04:02,093 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 14:04:02,093 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-21 14:04:02,093 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1651796359] [2022-11-21 14:04:02,093 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 14:04:02,094 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-21 14:04:02,094 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 14:04:02,094 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-21 14:04:02,094 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-11-21 14:04:02,095 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 99 out of 136 [2022-11-21 14:04:02,096 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 175 places, 168 transitions, 1194 flow. Second operand has 7 states, 7 states have (on average 103.0) internal successors, (721), 7 states have internal predecessors, (721), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 14:04:02,096 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 14:04:02,097 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 99 of 136 [2022-11-21 14:04:02,097 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 14:04:04,249 INFO L130 PetriNetUnfolder]: 1946/4570 cut-off events. [2022-11-21 14:04:04,249 INFO L131 PetriNetUnfolder]: For 37792/64968 co-relation queries the response was YES. [2022-11-21 14:04:04,299 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24650 conditions, 4570 events. 1946/4570 cut-off events. For 37792/64968 co-relation queries the response was YES. Maximal size of possible extension queue 219. Compared 36769 event pairs, 354 based on Foata normal form. 123/4518 useless extension candidates. Maximal degree in co-relation 24532. Up to 1581 conditions per place. [2022-11-21 14:04:04,344 INFO L137 encePairwiseOnDemand]: 118/136 looper letters, 77 selfloop transitions, 43 changer transitions 72/274 dead transitions. [2022-11-21 14:04:04,345 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 181 places, 274 transitions, 2958 flow [2022-11-21 14:04:04,346 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-21 14:04:04,346 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2022-11-21 14:04:04,349 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1397 transitions. [2022-11-21 14:04:04,351 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.790158371040724 [2022-11-21 14:04:04,351 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 1397 transitions. [2022-11-21 14:04:04,351 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 1397 transitions. [2022-11-21 14:04:04,353 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 14:04:04,353 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 1397 transitions. [2022-11-21 14:04:04,358 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 107.46153846153847) internal successors, (1397), 13 states have internal predecessors, (1397), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 14:04:04,364 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 136.0) internal successors, (1904), 14 states have internal predecessors, (1904), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 14:04:04,365 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 136.0) internal successors, (1904), 14 states have internal predecessors, (1904), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 14:04:04,366 INFO L175 Difference]: Start difference. First operand has 175 places, 168 transitions, 1194 flow. Second operand 13 states and 1397 transitions. [2022-11-21 14:04:04,366 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 181 places, 274 transitions, 2958 flow [2022-11-21 14:04:04,461 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 171 places, 274 transitions, 2867 flow, removed 41 selfloop flow, removed 10 redundant places. [2022-11-21 14:04:04,468 INFO L231 Difference]: Finished difference. Result has 183 places, 178 transitions, 1516 flow [2022-11-21 14:04:04,469 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=136, PETRI_DIFFERENCE_MINUEND_FLOW=1151, PETRI_DIFFERENCE_MINUEND_PLACES=159, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=168, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=125, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=1516, PETRI_PLACES=183, PETRI_TRANSITIONS=178} [2022-11-21 14:04:04,473 INFO L288 CegarLoopForPetriNet]: 143 programPoint places, 40 predicate places. [2022-11-21 14:04:04,473 INFO L495 AbstractCegarLoop]: Abstraction has has 183 places, 178 transitions, 1516 flow [2022-11-21 14:04:04,474 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 103.0) internal successors, (721), 7 states have internal predecessors, (721), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 14:04:04,474 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 14:04:04,475 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 14:04:04,475 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-21 14:04:04,476 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-11-21 14:04:04,477 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 14:04:04,477 INFO L85 PathProgramCache]: Analyzing trace with hash 63092310, now seen corresponding path program 1 times [2022-11-21 14:04:04,477 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 14:04:04,477 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [657886412] [2022-11-21 14:04:04,478 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 14:04:04,478 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 14:04:04,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:04:05,510 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 14:04:05,510 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 14:04:05,510 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [657886412] [2022-11-21 14:04:05,511 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [657886412] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 14:04:05,511 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 14:04:05,511 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-21 14:04:05,511 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1526323448] [2022-11-21 14:04:05,511 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 14:04:05,512 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-21 14:04:05,512 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 14:04:05,512 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-21 14:04:05,513 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2022-11-21 14:04:05,514 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 99 out of 136 [2022-11-21 14:04:05,515 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 183 places, 178 transitions, 1516 flow. Second operand has 10 states, 10 states have (on average 101.7) internal successors, (1017), 10 states have internal predecessors, (1017), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 14:04:05,515 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 14:04:05,515 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 99 of 136 [2022-11-21 14:04:05,516 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 14:04:08,132 INFO L130 PetriNetUnfolder]: 2350/5177 cut-off events. [2022-11-21 14:04:08,132 INFO L131 PetriNetUnfolder]: For 68280/119445 co-relation queries the response was YES. [2022-11-21 14:04:08,162 INFO L83 FinitePrefix]: Finished finitePrefix Result has 33367 conditions, 5177 events. 2350/5177 cut-off events. For 68280/119445 co-relation queries the response was YES. Maximal size of possible extension queue 284. Compared 41533 event pairs, 176 based on Foata normal form. 129/5187 useless extension candidates. Maximal degree in co-relation 33239. Up to 1985 conditions per place. [2022-11-21 14:04:08,206 INFO L137 encePairwiseOnDemand]: 116/136 looper letters, 77 selfloop transitions, 106 changer transitions 83/348 dead transitions. [2022-11-21 14:04:08,206 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 189 places, 348 transitions, 4668 flow [2022-11-21 14:04:08,207 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-11-21 14:04:08,209 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2022-11-21 14:04:08,212 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 1714 transitions. [2022-11-21 14:04:08,213 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7876838235294118 [2022-11-21 14:04:08,213 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 1714 transitions. [2022-11-21 14:04:08,214 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 1714 transitions. [2022-11-21 14:04:08,215 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 14:04:08,215 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 1714 transitions. [2022-11-21 14:04:08,220 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 107.125) internal successors, (1714), 16 states have internal predecessors, (1714), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 14:04:08,225 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 136.0) internal successors, (2312), 17 states have internal predecessors, (2312), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 14:04:08,226 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 136.0) internal successors, (2312), 17 states have internal predecessors, (2312), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 14:04:08,226 INFO L175 Difference]: Start difference. First operand has 183 places, 178 transitions, 1516 flow. Second operand 16 states and 1714 transitions. [2022-11-21 14:04:08,226 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 189 places, 348 transitions, 4668 flow [2022-11-21 14:04:08,351 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 183 places, 348 transitions, 4538 flow, removed 65 selfloop flow, removed 6 redundant places. [2022-11-21 14:04:08,357 INFO L231 Difference]: Finished difference. Result has 193 places, 239 transitions, 2835 flow [2022-11-21 14:04:08,357 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=136, PETRI_DIFFERENCE_MINUEND_FLOW=1478, PETRI_DIFFERENCE_MINUEND_PLACES=168, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=178, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=57, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=107, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=2835, PETRI_PLACES=193, PETRI_TRANSITIONS=239} [2022-11-21 14:04:08,358 INFO L288 CegarLoopForPetriNet]: 143 programPoint places, 50 predicate places. [2022-11-21 14:04:08,358 INFO L495 AbstractCegarLoop]: Abstraction has has 193 places, 239 transitions, 2835 flow [2022-11-21 14:04:08,359 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 101.7) internal successors, (1017), 10 states have internal predecessors, (1017), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 14:04:08,359 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 14:04:08,359 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 14:04:08,359 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-21 14:04:08,360 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-11-21 14:04:08,360 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 14:04:08,360 INFO L85 PathProgramCache]: Analyzing trace with hash -1676981800, now seen corresponding path program 2 times [2022-11-21 14:04:08,361 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 14:04:08,361 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1953945056] [2022-11-21 14:04:08,361 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 14:04:08,362 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 14:04:08,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:04:09,441 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 14:04:09,441 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 14:04:09,441 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1953945056] [2022-11-21 14:04:09,442 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1953945056] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 14:04:09,442 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 14:04:09,442 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-11-21 14:04:09,442 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1559874565] [2022-11-21 14:04:09,442 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 14:04:09,442 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-21 14:04:09,443 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 14:04:09,443 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-21 14:04:09,443 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2022-11-21 14:04:09,445 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 99 out of 136 [2022-11-21 14:04:09,446 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 193 places, 239 transitions, 2835 flow. Second operand has 12 states, 12 states have (on average 101.25) internal successors, (1215), 12 states have internal predecessors, (1215), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 14:04:09,447 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 14:04:09,447 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 99 of 136 [2022-11-21 14:04:09,447 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 14:04:12,051 INFO L130 PetriNetUnfolder]: 2285/5613 cut-off events. [2022-11-21 14:04:12,051 INFO L131 PetriNetUnfolder]: For 86063/132655 co-relation queries the response was YES. [2022-11-21 14:04:12,125 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37697 conditions, 5613 events. 2285/5613 cut-off events. For 86063/132655 co-relation queries the response was YES. Maximal size of possible extension queue 299. Compared 48452 event pairs, 156 based on Foata normal form. 677/6114 useless extension candidates. Maximal degree in co-relation 37558. Up to 1958 conditions per place. [2022-11-21 14:04:12,192 INFO L137 encePairwiseOnDemand]: 115/136 looper letters, 90 selfloop transitions, 104 changer transitions 109/385 dead transitions. [2022-11-21 14:04:12,192 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 205 places, 385 transitions, 6164 flow [2022-11-21 14:04:12,193 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-11-21 14:04:12,193 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2022-11-21 14:04:12,198 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 2024 transitions. [2022-11-21 14:04:12,200 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7832817337461301 [2022-11-21 14:04:12,200 INFO L72 ComplementDD]: Start complementDD. Operand 19 states and 2024 transitions. [2022-11-21 14:04:12,201 INFO L73 IsDeterministic]: Start isDeterministic. Operand 19 states and 2024 transitions. [2022-11-21 14:04:12,203 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 14:04:12,203 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 19 states and 2024 transitions. [2022-11-21 14:04:12,210 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 20 states, 19 states have (on average 106.52631578947368) internal successors, (2024), 19 states have internal predecessors, (2024), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 14:04:12,217 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 20 states, 20 states have (on average 136.0) internal successors, (2720), 20 states have internal predecessors, (2720), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 14:04:12,219 INFO L81 ComplementDD]: Finished complementDD. Result has 20 states, 20 states have (on average 136.0) internal successors, (2720), 20 states have internal predecessors, (2720), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 14:04:12,220 INFO L175 Difference]: Start difference. First operand has 193 places, 239 transitions, 2835 flow. Second operand 19 states and 2024 transitions. [2022-11-21 14:04:12,220 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 205 places, 385 transitions, 6164 flow [2022-11-21 14:04:12,410 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 202 places, 385 transitions, 5885 flow, removed 59 selfloop flow, removed 3 redundant places. [2022-11-21 14:04:12,421 INFO L231 Difference]: Finished difference. Result has 214 places, 254 transitions, 3366 flow [2022-11-21 14:04:12,422 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=136, PETRI_DIFFERENCE_MINUEND_FLOW=2645, PETRI_DIFFERENCE_MINUEND_PLACES=184, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=239, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=89, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=139, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=3366, PETRI_PLACES=214, PETRI_TRANSITIONS=254} [2022-11-21 14:04:12,425 INFO L288 CegarLoopForPetriNet]: 143 programPoint places, 71 predicate places. [2022-11-21 14:04:12,425 INFO L495 AbstractCegarLoop]: Abstraction has has 214 places, 254 transitions, 3366 flow [2022-11-21 14:04:12,426 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 101.25) internal successors, (1215), 12 states have internal predecessors, (1215), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 14:04:12,426 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 14:04:12,426 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 14:04:12,427 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-21 14:04:12,427 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-11-21 14:04:12,427 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 14:04:12,428 INFO L85 PathProgramCache]: Analyzing trace with hash -1786070736, now seen corresponding path program 3 times [2022-11-21 14:04:12,428 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 14:04:12,428 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [182144871] [2022-11-21 14:04:12,429 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 14:04:12,429 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 14:04:12,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:04:13,633 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 14:04:13,634 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 14:04:13,634 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [182144871] [2022-11-21 14:04:13,635 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [182144871] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 14:04:13,635 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 14:04:13,635 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-11-21 14:04:13,635 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1560263413] [2022-11-21 14:04:13,636 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 14:04:13,637 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-21 14:04:13,638 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 14:04:13,638 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-21 14:04:13,639 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2022-11-21 14:04:13,641 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 112 out of 136 [2022-11-21 14:04:13,643 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 214 places, 254 transitions, 3366 flow. Second operand has 11 states, 11 states have (on average 113.54545454545455) internal successors, (1249), 11 states have internal predecessors, (1249), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 14:04:13,644 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 14:04:13,644 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 112 of 136 [2022-11-21 14:04:13,644 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 14:04:15,764 INFO L130 PetriNetUnfolder]: 2170/5316 cut-off events. [2022-11-21 14:04:15,764 INFO L131 PetriNetUnfolder]: For 116722/162563 co-relation queries the response was YES. [2022-11-21 14:04:15,816 INFO L83 FinitePrefix]: Finished finitePrefix Result has 40405 conditions, 5316 events. 2170/5316 cut-off events. For 116722/162563 co-relation queries the response was YES. Maximal size of possible extension queue 292. Compared 46689 event pairs, 312 based on Foata normal form. 685/5737 useless extension candidates. Maximal degree in co-relation 40259. Up to 2129 conditions per place. [2022-11-21 14:04:15,872 INFO L137 encePairwiseOnDemand]: 125/136 looper letters, 58 selfloop transitions, 31 changer transitions 46/311 dead transitions. [2022-11-21 14:04:15,872 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 217 places, 311 transitions, 4944 flow [2022-11-21 14:04:15,873 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-21 14:04:15,874 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2022-11-21 14:04:15,877 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1505 transitions. [2022-11-21 14:04:15,878 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8512443438914027 [2022-11-21 14:04:15,878 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 1505 transitions. [2022-11-21 14:04:15,878 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 1505 transitions. [2022-11-21 14:04:15,879 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 14:04:15,880 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 1505 transitions. [2022-11-21 14:04:15,884 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 115.76923076923077) internal successors, (1505), 13 states have internal predecessors, (1505), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 14:04:15,888 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 136.0) internal successors, (1904), 14 states have internal predecessors, (1904), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 14:04:15,890 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 136.0) internal successors, (1904), 14 states have internal predecessors, (1904), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 14:04:15,890 INFO L175 Difference]: Start difference. First operand has 214 places, 254 transitions, 3366 flow. Second operand 13 states and 1505 transitions. [2022-11-21 14:04:15,890 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 217 places, 311 transitions, 4944 flow [2022-11-21 14:04:16,294 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 205 places, 311 transitions, 4747 flow, removed 74 selfloop flow, removed 12 redundant places. [2022-11-21 14:04:16,302 INFO L231 Difference]: Finished difference. Result has 212 places, 259 transitions, 3539 flow [2022-11-21 14:04:16,303 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=136, PETRI_DIFFERENCE_MINUEND_FLOW=3279, PETRI_DIFFERENCE_MINUEND_PLACES=193, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=254, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=223, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=3539, PETRI_PLACES=212, PETRI_TRANSITIONS=259} [2022-11-21 14:04:16,304 INFO L288 CegarLoopForPetriNet]: 143 programPoint places, 69 predicate places. [2022-11-21 14:04:16,304 INFO L495 AbstractCegarLoop]: Abstraction has has 212 places, 259 transitions, 3539 flow [2022-11-21 14:04:16,305 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 113.54545454545455) internal successors, (1249), 11 states have internal predecessors, (1249), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 14:04:16,305 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 14:04:16,305 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 14:04:16,306 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-21 14:04:16,306 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-11-21 14:04:16,307 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 14:04:16,307 INFO L85 PathProgramCache]: Analyzing trace with hash 399080608, now seen corresponding path program 4 times [2022-11-21 14:04:16,307 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 14:04:16,307 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [538477804] [2022-11-21 14:04:16,308 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 14:04:16,308 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 14:04:16,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:04:17,177 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 14:04:17,178 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 14:04:17,178 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [538477804] [2022-11-21 14:04:17,178 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [538477804] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 14:04:17,178 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 14:04:17,179 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-11-21 14:04:17,179 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [204428067] [2022-11-21 14:04:17,179 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 14:04:17,180 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-21 14:04:17,180 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 14:04:17,180 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-21 14:04:17,181 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2022-11-21 14:04:17,182 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 110 out of 136 [2022-11-21 14:04:17,184 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 212 places, 259 transitions, 3539 flow. Second operand has 11 states, 11 states have (on average 111.72727272727273) internal successors, (1229), 11 states have internal predecessors, (1229), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 14:04:17,184 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 14:04:17,184 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 110 of 136 [2022-11-21 14:04:17,184 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 14:04:18,546 INFO L130 PetriNetUnfolder]: 1948/4854 cut-off events. [2022-11-21 14:04:18,547 INFO L131 PetriNetUnfolder]: For 105425/178372 co-relation queries the response was YES. [2022-11-21 14:04:18,585 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37784 conditions, 4854 events. 1948/4854 cut-off events. For 105425/178372 co-relation queries the response was YES. Maximal size of possible extension queue 292. Compared 43024 event pairs, 258 based on Foata normal form. 410/5068 useless extension candidates. Maximal degree in co-relation 37682. Up to 1953 conditions per place. [2022-11-21 14:04:18,623 INFO L137 encePairwiseOnDemand]: 125/136 looper letters, 75 selfloop transitions, 22 changer transitions 45/316 dead transitions. [2022-11-21 14:04:18,624 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 218 places, 316 transitions, 5388 flow [2022-11-21 14:04:18,624 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-21 14:04:18,624 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2022-11-21 14:04:18,626 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1482 transitions. [2022-11-21 14:04:18,627 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8382352941176471 [2022-11-21 14:04:18,627 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 1482 transitions. [2022-11-21 14:04:18,627 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 1482 transitions. [2022-11-21 14:04:18,628 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 14:04:18,629 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 1482 transitions. [2022-11-21 14:04:18,632 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 114.0) internal successors, (1482), 13 states have internal predecessors, (1482), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 14:04:18,635 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 136.0) internal successors, (1904), 14 states have internal predecessors, (1904), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 14:04:18,637 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 136.0) internal successors, (1904), 14 states have internal predecessors, (1904), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 14:04:18,637 INFO L175 Difference]: Start difference. First operand has 212 places, 259 transitions, 3539 flow. Second operand 13 states and 1482 transitions. [2022-11-21 14:04:18,637 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 218 places, 316 transitions, 5388 flow [2022-11-21 14:04:18,964 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 202 places, 316 transitions, 5220 flow, removed 68 selfloop flow, removed 16 redundant places. [2022-11-21 14:04:18,969 INFO L231 Difference]: Finished difference. Result has 209 places, 264 transitions, 3735 flow [2022-11-21 14:04:18,969 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=136, PETRI_DIFFERENCE_MINUEND_FLOW=3471, PETRI_DIFFERENCE_MINUEND_PLACES=190, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=259, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=237, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=3735, PETRI_PLACES=209, PETRI_TRANSITIONS=264} [2022-11-21 14:04:18,970 INFO L288 CegarLoopForPetriNet]: 143 programPoint places, 66 predicate places. [2022-11-21 14:04:18,970 INFO L495 AbstractCegarLoop]: Abstraction has has 209 places, 264 transitions, 3735 flow [2022-11-21 14:04:18,971 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 111.72727272727273) internal successors, (1229), 11 states have internal predecessors, (1229), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 14:04:18,972 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 14:04:18,972 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 14:04:18,972 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-21 14:04:18,972 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-11-21 14:04:18,973 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 14:04:18,973 INFO L85 PathProgramCache]: Analyzing trace with hash 783276153, now seen corresponding path program 1 times [2022-11-21 14:04:18,973 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 14:04:18,973 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [728316389] [2022-11-21 14:04:18,974 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 14:04:18,974 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 14:04:19,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:04:19,911 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 14:04:19,912 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 14:04:19,912 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [728316389] [2022-11-21 14:04:19,912 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [728316389] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 14:04:19,913 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 14:04:19,913 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-11-21 14:04:19,913 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [629748893] [2022-11-21 14:04:19,913 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 14:04:19,914 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-21 14:04:19,914 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 14:04:19,915 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-21 14:04:19,915 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2022-11-21 14:04:19,917 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 110 out of 136 [2022-11-21 14:04:19,919 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 209 places, 264 transitions, 3735 flow. Second operand has 11 states, 11 states have (on average 111.81818181818181) internal successors, (1230), 11 states have internal predecessors, (1230), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 14:04:19,919 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 14:04:19,919 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 110 of 136 [2022-11-21 14:04:19,920 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 14:04:21,249 INFO L130 PetriNetUnfolder]: 1771/4598 cut-off events. [2022-11-21 14:04:21,249 INFO L131 PetriNetUnfolder]: For 94362/179093 co-relation queries the response was YES. [2022-11-21 14:04:21,285 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35011 conditions, 4598 events. 1771/4598 cut-off events. For 94362/179093 co-relation queries the response was YES. Maximal size of possible extension queue 311. Compared 41231 event pairs, 273 based on Foata normal form. 243/4638 useless extension candidates. Maximal degree in co-relation 34869. Up to 1818 conditions per place. [2022-11-21 14:04:21,314 INFO L137 encePairwiseOnDemand]: 124/136 looper letters, 67 selfloop transitions, 29 changer transitions 15/285 dead transitions. [2022-11-21 14:04:21,314 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 212 places, 285 transitions, 4546 flow [2022-11-21 14:04:21,315 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-21 14:04:21,315 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-11-21 14:04:21,316 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1139 transitions. [2022-11-21 14:04:21,317 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8375 [2022-11-21 14:04:21,317 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1139 transitions. [2022-11-21 14:04:21,317 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1139 transitions. [2022-11-21 14:04:21,318 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 14:04:21,318 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1139 transitions. [2022-11-21 14:04:21,320 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 113.9) internal successors, (1139), 10 states have internal predecessors, (1139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 14:04:21,322 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 136.0) internal successors, (1496), 11 states have internal predecessors, (1496), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 14:04:21,323 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 136.0) internal successors, (1496), 11 states have internal predecessors, (1496), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 14:04:21,323 INFO L175 Difference]: Start difference. First operand has 209 places, 264 transitions, 3735 flow. Second operand 10 states and 1139 transitions. [2022-11-21 14:04:21,323 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 212 places, 285 transitions, 4546 flow [2022-11-21 14:04:21,570 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 202 places, 285 transitions, 4392 flow, removed 70 selfloop flow, removed 10 redundant places. [2022-11-21 14:04:21,574 INFO L231 Difference]: Finished difference. Result has 206 places, 269 transitions, 3869 flow [2022-11-21 14:04:21,574 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=136, PETRI_DIFFERENCE_MINUEND_FLOW=3661, PETRI_DIFFERENCE_MINUEND_PLACES=193, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=264, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=235, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3869, PETRI_PLACES=206, PETRI_TRANSITIONS=269} [2022-11-21 14:04:21,575 INFO L288 CegarLoopForPetriNet]: 143 programPoint places, 63 predicate places. [2022-11-21 14:04:21,575 INFO L495 AbstractCegarLoop]: Abstraction has has 206 places, 269 transitions, 3869 flow [2022-11-21 14:04:21,576 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 111.81818181818181) internal successors, (1230), 11 states have internal predecessors, (1230), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 14:04:21,576 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 14:04:21,576 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 14:04:21,576 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-21 14:04:21,576 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-11-21 14:04:21,576 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 14:04:21,576 INFO L85 PathProgramCache]: Analyzing trace with hash 1133105913, now seen corresponding path program 2 times [2022-11-21 14:04:21,577 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 14:04:21,577 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1810930268] [2022-11-21 14:04:21,577 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 14:04:21,577 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 14:04:21,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:04:22,695 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 14:04:22,696 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 14:04:22,696 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1810930268] [2022-11-21 14:04:22,696 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1810930268] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 14:04:22,696 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 14:04:22,696 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-11-21 14:04:22,696 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1945565119] [2022-11-21 14:04:22,697 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 14:04:22,697 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-21 14:04:22,697 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 14:04:22,697 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-21 14:04:22,698 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2022-11-21 14:04:22,699 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 110 out of 136 [2022-11-21 14:04:22,701 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 206 places, 269 transitions, 3869 flow. Second operand has 12 states, 12 states have (on average 111.66666666666667) internal successors, (1340), 12 states have internal predecessors, (1340), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 14:04:22,701 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 14:04:22,701 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 110 of 136 [2022-11-21 14:04:22,701 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 14:04:24,268 INFO L130 PetriNetUnfolder]: 1791/4769 cut-off events. [2022-11-21 14:04:24,268 INFO L131 PetriNetUnfolder]: For 88195/182178 co-relation queries the response was YES. [2022-11-21 14:04:24,312 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35452 conditions, 4769 events. 1791/4769 cut-off events. For 88195/182178 co-relation queries the response was YES. Maximal size of possible extension queue 329. Compared 44080 event pairs, 290 based on Foata normal form. 255/4821 useless extension candidates. Maximal degree in co-relation 35312. Up to 1846 conditions per place. [2022-11-21 14:04:24,345 INFO L137 encePairwiseOnDemand]: 124/136 looper letters, 70 selfloop transitions, 28 changer transitions 17/289 dead transitions. [2022-11-21 14:04:24,345 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 215 places, 289 transitions, 4597 flow [2022-11-21 14:04:24,346 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-21 14:04:24,346 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2022-11-21 14:04:24,348 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1473 transitions. [2022-11-21 14:04:24,349 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8331447963800905 [2022-11-21 14:04:24,349 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 1473 transitions. [2022-11-21 14:04:24,349 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 1473 transitions. [2022-11-21 14:04:24,350 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 14:04:24,350 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 1473 transitions. [2022-11-21 14:04:24,353 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 113.3076923076923) internal successors, (1473), 13 states have internal predecessors, (1473), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 14:04:24,356 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 136.0) internal successors, (1904), 14 states have internal predecessors, (1904), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 14:04:24,357 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 136.0) internal successors, (1904), 14 states have internal predecessors, (1904), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 14:04:24,357 INFO L175 Difference]: Start difference. First operand has 206 places, 269 transitions, 3869 flow. Second operand 13 states and 1473 transitions. [2022-11-21 14:04:24,358 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 215 places, 289 transitions, 4597 flow [2022-11-21 14:04:24,678 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 207 places, 289 transitions, 4522 flow, removed 15 selfloop flow, removed 8 redundant places. [2022-11-21 14:04:24,682 INFO L231 Difference]: Finished difference. Result has 214 places, 271 transitions, 3971 flow [2022-11-21 14:04:24,683 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=136, PETRI_DIFFERENCE_MINUEND_FLOW=3802, PETRI_DIFFERENCE_MINUEND_PLACES=195, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=269, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=241, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=3971, PETRI_PLACES=214, PETRI_TRANSITIONS=271} [2022-11-21 14:04:24,683 INFO L288 CegarLoopForPetriNet]: 143 programPoint places, 71 predicate places. [2022-11-21 14:04:24,683 INFO L495 AbstractCegarLoop]: Abstraction has has 214 places, 271 transitions, 3971 flow [2022-11-21 14:04:24,684 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 111.66666666666667) internal successors, (1340), 12 states have internal predecessors, (1340), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 14:04:24,684 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 14:04:24,684 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 14:04:24,685 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-11-21 14:04:24,685 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-11-21 14:04:24,685 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 14:04:24,685 INFO L85 PathProgramCache]: Analyzing trace with hash 1216940185, now seen corresponding path program 3 times [2022-11-21 14:04:24,686 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 14:04:24,686 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [660911828] [2022-11-21 14:04:24,686 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 14:04:24,686 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 14:04:24,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:04:26,249 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 14:04:26,249 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 14:04:26,249 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [660911828] [2022-11-21 14:04:26,249 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [660911828] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 14:04:26,250 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 14:04:26,250 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-11-21 14:04:26,250 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1877463690] [2022-11-21 14:04:26,250 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 14:04:26,250 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-11-21 14:04:26,251 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 14:04:26,251 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-11-21 14:04:26,251 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=114, Unknown=0, NotChecked=0, Total=156 [2022-11-21 14:04:26,253 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 98 out of 136 [2022-11-21 14:04:26,254 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 214 places, 271 transitions, 3971 flow. Second operand has 13 states, 13 states have (on average 100.23076923076923) internal successors, (1303), 13 states have internal predecessors, (1303), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 14:04:26,254 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 14:04:26,255 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 98 of 136 [2022-11-21 14:04:26,255 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 14:04:28,553 INFO L130 PetriNetUnfolder]: 2096/5383 cut-off events. [2022-11-21 14:04:28,553 INFO L131 PetriNetUnfolder]: For 116770/237140 co-relation queries the response was YES. [2022-11-21 14:04:28,602 INFO L83 FinitePrefix]: Finished finitePrefix Result has 42125 conditions, 5383 events. 2096/5383 cut-off events. For 116770/237140 co-relation queries the response was YES. Maximal size of possible extension queue 315. Compared 48873 event pairs, 162 based on Foata normal form. 533/5730 useless extension candidates. Maximal degree in co-relation 41975. Up to 1895 conditions per place. [2022-11-21 14:04:28,639 INFO L137 encePairwiseOnDemand]: 114/136 looper letters, 139 selfloop transitions, 106 changer transitions 73/399 dead transitions. [2022-11-21 14:04:28,639 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 227 places, 399 transitions, 7255 flow [2022-11-21 14:04:28,640 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-11-21 14:04:28,640 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2022-11-21 14:04:28,642 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 2081 transitions. [2022-11-21 14:04:28,643 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7650735294117647 [2022-11-21 14:04:28,643 INFO L72 ComplementDD]: Start complementDD. Operand 20 states and 2081 transitions. [2022-11-21 14:04:28,643 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 2081 transitions. [2022-11-21 14:04:28,644 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 14:04:28,645 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 20 states and 2081 transitions. [2022-11-21 14:04:28,648 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 21 states, 20 states have (on average 104.05) internal successors, (2081), 20 states have internal predecessors, (2081), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 14:04:28,652 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 21 states, 21 states have (on average 136.0) internal successors, (2856), 21 states have internal predecessors, (2856), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 14:04:28,653 INFO L81 ComplementDD]: Finished complementDD. Result has 21 states, 21 states have (on average 136.0) internal successors, (2856), 21 states have internal predecessors, (2856), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 14:04:28,654 INFO L175 Difference]: Start difference. First operand has 214 places, 271 transitions, 3971 flow. Second operand 20 states and 2081 transitions. [2022-11-21 14:04:28,654 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 227 places, 399 transitions, 7255 flow [2022-11-21 14:04:29,123 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 216 places, 399 transitions, 7053 flow, removed 77 selfloop flow, removed 11 redundant places. [2022-11-21 14:04:29,281 INFO L231 Difference]: Finished difference. Result has 230 places, 301 transitions, 5010 flow [2022-11-21 14:04:29,282 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=136, PETRI_DIFFERENCE_MINUEND_FLOW=3881, PETRI_DIFFERENCE_MINUEND_PLACES=197, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=271, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=77, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=171, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=5010, PETRI_PLACES=230, PETRI_TRANSITIONS=301} [2022-11-21 14:04:29,283 INFO L288 CegarLoopForPetriNet]: 143 programPoint places, 87 predicate places. [2022-11-21 14:04:29,283 INFO L495 AbstractCegarLoop]: Abstraction has has 230 places, 301 transitions, 5010 flow [2022-11-21 14:04:29,283 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 100.23076923076923) internal successors, (1303), 13 states have internal predecessors, (1303), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 14:04:29,283 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 14:04:29,283 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 14:04:29,284 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-11-21 14:04:29,284 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-11-21 14:04:29,284 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 14:04:29,285 INFO L85 PathProgramCache]: Analyzing trace with hash 2006098907, now seen corresponding path program 4 times [2022-11-21 14:04:29,285 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 14:04:29,285 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1893765518] [2022-11-21 14:04:29,285 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 14:04:29,285 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 14:04:29,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:04:30,533 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 14:04:30,533 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 14:04:30,533 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1893765518] [2022-11-21 14:04:30,534 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1893765518] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 14:04:30,534 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 14:04:30,534 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-11-21 14:04:30,534 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [345258982] [2022-11-21 14:04:30,534 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 14:04:30,535 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-21 14:04:30,535 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 14:04:30,535 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-21 14:04:30,535 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2022-11-21 14:04:30,536 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 99 out of 136 [2022-11-21 14:04:30,537 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 230 places, 301 transitions, 5010 flow. Second operand has 11 states, 11 states have (on average 101.54545454545455) internal successors, (1117), 11 states have internal predecessors, (1117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 14:04:30,537 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 14:04:30,538 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 99 of 136 [2022-11-21 14:04:30,538 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 14:04:32,604 INFO L130 PetriNetUnfolder]: 2101/5708 cut-off events. [2022-11-21 14:04:32,605 INFO L131 PetriNetUnfolder]: For 137824/323039 co-relation queries the response was YES. [2022-11-21 14:04:32,679 INFO L83 FinitePrefix]: Finished finitePrefix Result has 46787 conditions, 5708 events. 2101/5708 cut-off events. For 137824/323039 co-relation queries the response was YES. Maximal size of possible extension queue 404. Compared 55571 event pairs, 192 based on Foata normal form. 141/5719 useless extension candidates. Maximal degree in co-relation 46625. Up to 1933 conditions per place. [2022-11-21 14:04:32,721 INFO L137 encePairwiseOnDemand]: 120/136 looper letters, 179 selfloop transitions, 97 changer transitions 96/454 dead transitions. [2022-11-21 14:04:32,721 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 237 places, 454 transitions, 9462 flow [2022-11-21 14:04:32,722 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-11-21 14:04:32,722 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2022-11-21 14:04:32,724 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 1810 transitions. [2022-11-21 14:04:32,725 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.782871972318339 [2022-11-21 14:04:32,725 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 1810 transitions. [2022-11-21 14:04:32,725 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 1810 transitions. [2022-11-21 14:04:32,726 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 14:04:32,726 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 1810 transitions. [2022-11-21 14:04:32,729 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 106.47058823529412) internal successors, (1810), 17 states have internal predecessors, (1810), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 14:04:32,732 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 136.0) internal successors, (2448), 18 states have internal predecessors, (2448), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 14:04:32,733 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 136.0) internal successors, (2448), 18 states have internal predecessors, (2448), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 14:04:32,733 INFO L175 Difference]: Start difference. First operand has 230 places, 301 transitions, 5010 flow. Second operand 17 states and 1810 transitions. [2022-11-21 14:04:32,733 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 237 places, 454 transitions, 9462 flow [2022-11-21 14:04:33,262 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 225 places, 454 transitions, 9187 flow, removed 124 selfloop flow, removed 12 redundant places. [2022-11-21 14:04:33,271 INFO L231 Difference]: Finished difference. Result has 237 places, 329 transitions, 6029 flow [2022-11-21 14:04:33,271 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=136, PETRI_DIFFERENCE_MINUEND_FLOW=4879, PETRI_DIFFERENCE_MINUEND_PLACES=209, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=301, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=67, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=206, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=6029, PETRI_PLACES=237, PETRI_TRANSITIONS=329} [2022-11-21 14:04:33,271 INFO L288 CegarLoopForPetriNet]: 143 programPoint places, 94 predicate places. [2022-11-21 14:04:33,272 INFO L495 AbstractCegarLoop]: Abstraction has has 237 places, 329 transitions, 6029 flow [2022-11-21 14:04:33,272 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 101.54545454545455) internal successors, (1117), 11 states have internal predecessors, (1117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 14:04:33,272 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 14:04:33,272 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 14:04:33,272 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-11-21 14:04:33,272 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-11-21 14:04:33,272 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 14:04:33,273 INFO L85 PathProgramCache]: Analyzing trace with hash 1748407055, now seen corresponding path program 1 times [2022-11-21 14:04:33,273 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 14:04:33,273 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [186707161] [2022-11-21 14:04:33,273 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 14:04:33,273 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 14:04:33,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:04:33,494 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 14:04:33,494 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 14:04:33,495 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [186707161] [2022-11-21 14:04:33,495 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [186707161] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 14:04:33,495 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 14:04:33,495 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-21 14:04:33,495 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [895901948] [2022-11-21 14:04:33,495 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 14:04:33,497 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-21 14:04:33,497 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 14:04:33,498 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-21 14:04:33,498 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-21 14:04:33,499 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 111 out of 136 [2022-11-21 14:04:33,499 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 237 places, 329 transitions, 6029 flow. Second operand has 6 states, 6 states have (on average 113.5) internal successors, (681), 6 states have internal predecessors, (681), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 14:04:33,499 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 14:04:33,500 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 111 of 136 [2022-11-21 14:04:33,500 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 14:04:47,285 INFO L130 PetriNetUnfolder]: 23711/43657 cut-off events. [2022-11-21 14:04:47,285 INFO L131 PetriNetUnfolder]: For 1082740/1177906 co-relation queries the response was YES. [2022-11-21 14:04:47,965 INFO L83 FinitePrefix]: Finished finitePrefix Result has 238989 conditions, 43657 events. 23711/43657 cut-off events. For 1082740/1177906 co-relation queries the response was YES. Maximal size of possible extension queue 3260. Compared 449542 event pairs, 1115 based on Foata normal form. 3019/43827 useless extension candidates. Maximal degree in co-relation 238834. Up to 14981 conditions per place. [2022-11-21 14:04:48,275 INFO L137 encePairwiseOnDemand]: 125/136 looper letters, 297 selfloop transitions, 20 changer transitions 95/630 dead transitions. [2022-11-21 14:04:48,275 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 237 places, 630 transitions, 14285 flow [2022-11-21 14:04:48,276 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-21 14:04:48,276 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-11-21 14:04:48,278 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1194 transitions. [2022-11-21 14:04:48,279 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8779411764705882 [2022-11-21 14:04:48,279 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1194 transitions. [2022-11-21 14:04:48,279 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1194 transitions. [2022-11-21 14:04:48,280 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 14:04:48,280 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1194 transitions. [2022-11-21 14:04:48,282 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 119.4) internal successors, (1194), 10 states have internal predecessors, (1194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 14:04:48,284 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 136.0) internal successors, (1496), 11 states have internal predecessors, (1496), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 14:04:48,285 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 136.0) internal successors, (1496), 11 states have internal predecessors, (1496), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 14:04:48,285 INFO L175 Difference]: Start difference. First operand has 237 places, 329 transitions, 6029 flow. Second operand 10 states and 1194 transitions. [2022-11-21 14:04:48,285 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 237 places, 630 transitions, 14285 flow [2022-11-21 14:04:50,328 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 222 places, 630 transitions, 13928 flow, removed 41 selfloop flow, removed 15 redundant places. [2022-11-21 14:04:50,341 INFO L231 Difference]: Finished difference. Result has 228 places, 342 transitions, 5951 flow [2022-11-21 14:04:50,342 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=136, PETRI_DIFFERENCE_MINUEND_FLOW=5808, PETRI_DIFFERENCE_MINUEND_PLACES=213, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=324, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=314, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=5951, PETRI_PLACES=228, PETRI_TRANSITIONS=342} [2022-11-21 14:04:50,342 INFO L288 CegarLoopForPetriNet]: 143 programPoint places, 85 predicate places. [2022-11-21 14:04:50,343 INFO L495 AbstractCegarLoop]: Abstraction has has 228 places, 342 transitions, 5951 flow [2022-11-21 14:04:50,343 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 113.5) internal successors, (681), 6 states have internal predecessors, (681), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 14:04:50,343 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 14:04:50,343 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 14:04:50,343 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-11-21 14:04:50,344 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-11-21 14:04:50,344 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 14:04:50,344 INFO L85 PathProgramCache]: Analyzing trace with hash -437255427, now seen corresponding path program 1 times [2022-11-21 14:04:50,344 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 14:04:50,344 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1468972155] [2022-11-21 14:04:50,345 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 14:04:50,345 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 14:04:50,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:04:50,710 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 14:04:50,711 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 14:04:50,711 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1468972155] [2022-11-21 14:04:50,713 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1468972155] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 14:04:50,714 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 14:04:50,714 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-21 14:04:50,714 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1585144245] [2022-11-21 14:04:50,714 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 14:04:50,716 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-21 14:04:50,716 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 14:04:50,716 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-21 14:04:50,717 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-11-21 14:04:50,717 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 111 out of 136 [2022-11-21 14:04:50,718 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 228 places, 342 transitions, 5951 flow. Second operand has 7 states, 7 states have (on average 113.28571428571429) internal successors, (793), 7 states have internal predecessors, (793), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 14:04:50,719 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 14:04:50,719 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 111 of 136 [2022-11-21 14:04:50,719 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 14:05:03,718 INFO L130 PetriNetUnfolder]: 22732/43909 cut-off events. [2022-11-21 14:05:03,718 INFO L131 PetriNetUnfolder]: For 974637/1051655 co-relation queries the response was YES. [2022-11-21 14:05:04,267 INFO L83 FinitePrefix]: Finished finitePrefix Result has 272911 conditions, 43909 events. 22732/43909 cut-off events. For 974637/1051655 co-relation queries the response was YES. Maximal size of possible extension queue 3424. Compared 479108 event pairs, 652 based on Foata normal form. 4289/46641 useless extension candidates. Maximal degree in co-relation 272761. Up to 14328 conditions per place. [2022-11-21 14:05:04,379 INFO L137 encePairwiseOnDemand]: 125/136 looper letters, 339 selfloop transitions, 38 changer transitions 154/729 dead transitions. [2022-11-21 14:05:04,379 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 240 places, 729 transitions, 16782 flow [2022-11-21 14:05:04,380 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-21 14:05:04,380 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2022-11-21 14:05:04,382 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1555 transitions. [2022-11-21 14:05:04,382 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.879524886877828 [2022-11-21 14:05:04,383 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 1555 transitions. [2022-11-21 14:05:04,383 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 1555 transitions. [2022-11-21 14:05:04,384 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 14:05:04,384 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 1555 transitions. [2022-11-21 14:05:04,387 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 119.61538461538461) internal successors, (1555), 13 states have internal predecessors, (1555), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 14:05:04,389 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 136.0) internal successors, (1904), 14 states have internal predecessors, (1904), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 14:05:04,390 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 136.0) internal successors, (1904), 14 states have internal predecessors, (1904), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 14:05:04,390 INFO L175 Difference]: Start difference. First operand has 228 places, 342 transitions, 5951 flow. Second operand 13 states and 1555 transitions. [2022-11-21 14:05:04,390 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 240 places, 729 transitions, 16782 flow [2022-11-21 14:05:08,858 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 237 places, 729 transitions, 16466 flow, removed 3 selfloop flow, removed 3 redundant places. [2022-11-21 14:05:08,871 INFO L231 Difference]: Finished difference. Result has 243 places, 332 transitions, 5427 flow [2022-11-21 14:05:08,871 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=136, PETRI_DIFFERENCE_MINUEND_FLOW=5134, PETRI_DIFFERENCE_MINUEND_PLACES=225, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=312, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=286, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=5427, PETRI_PLACES=243, PETRI_TRANSITIONS=332} [2022-11-21 14:05:08,872 INFO L288 CegarLoopForPetriNet]: 143 programPoint places, 100 predicate places. [2022-11-21 14:05:08,872 INFO L495 AbstractCegarLoop]: Abstraction has has 243 places, 332 transitions, 5427 flow [2022-11-21 14:05:08,872 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 113.28571428571429) internal successors, (793), 7 states have internal predecessors, (793), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 14:05:08,872 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 14:05:08,872 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] [2022-11-21 14:05:08,872 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-11-21 14:05:08,873 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-11-21 14:05:08,873 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 14:05:08,873 INFO L85 PathProgramCache]: Analyzing trace with hash -1885333928, now seen corresponding path program 1 times [2022-11-21 14:05:08,873 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 14:05:08,873 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1734671658] [2022-11-21 14:05:08,874 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 14:05:08,874 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 14:05:08,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:05:09,224 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 14:05:09,225 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 14:05:09,225 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1734671658] [2022-11-21 14:05:09,225 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1734671658] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 14:05:09,225 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 14:05:09,226 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-21 14:05:09,226 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [40311888] [2022-11-21 14:05:09,226 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 14:05:09,227 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-21 14:05:09,227 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 14:05:09,228 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-21 14:05:09,228 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-21 14:05:09,230 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 114 out of 136 [2022-11-21 14:05:09,231 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 243 places, 332 transitions, 5427 flow. Second operand has 6 states, 6 states have (on average 116.5) internal successors, (699), 6 states have internal predecessors, (699), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 14:05:09,231 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 14:05:09,232 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 114 of 136 [2022-11-21 14:05:09,232 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 14:05:14,883 INFO L130 PetriNetUnfolder]: 6971/23966 cut-off events. [2022-11-21 14:05:14,883 INFO L131 PetriNetUnfolder]: For 205112/242353 co-relation queries the response was YES. [2022-11-21 14:05:15,228 INFO L83 FinitePrefix]: Finished finitePrefix Result has 110575 conditions, 23966 events. 6971/23966 cut-off events. For 205112/242353 co-relation queries the response was YES. Maximal size of possible extension queue 2926. Compared 352057 event pairs, 587 based on Foata normal form. 1053/23208 useless extension candidates. Maximal degree in co-relation 110420. Up to 7703 conditions per place. [2022-11-21 14:05:15,333 INFO L137 encePairwiseOnDemand]: 130/136 looper letters, 121 selfloop transitions, 60 changer transitions 48/413 dead transitions. [2022-11-21 14:05:15,333 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 251 places, 413 transitions, 7738 flow [2022-11-21 14:05:15,334 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-21 14:05:15,334 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-11-21 14:05:15,335 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1073 transitions. [2022-11-21 14:05:15,336 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8766339869281046 [2022-11-21 14:05:15,336 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1073 transitions. [2022-11-21 14:05:15,336 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1073 transitions. [2022-11-21 14:05:15,336 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 14:05:15,336 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1073 transitions. [2022-11-21 14:05:15,339 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 119.22222222222223) internal successors, (1073), 9 states have internal predecessors, (1073), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 14:05:15,341 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 136.0) internal successors, (1360), 10 states have internal predecessors, (1360), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 14:05:15,341 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 136.0) internal successors, (1360), 10 states have internal predecessors, (1360), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 14:05:15,341 INFO L175 Difference]: Start difference. First operand has 243 places, 332 transitions, 5427 flow. Second operand 9 states and 1073 transitions. [2022-11-21 14:05:15,342 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 251 places, 413 transitions, 7738 flow [2022-11-21 14:05:23,216 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 244 places, 413 transitions, 7631 flow, removed 44 selfloop flow, removed 7 redundant places. [2022-11-21 14:05:23,221 INFO L231 Difference]: Finished difference. Result has 251 places, 326 transitions, 5373 flow [2022-11-21 14:05:23,222 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=136, PETRI_DIFFERENCE_MINUEND_FLOW=5320, PETRI_DIFFERENCE_MINUEND_PLACES=236, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=332, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=52, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=277, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=5373, PETRI_PLACES=251, PETRI_TRANSITIONS=326} [2022-11-21 14:05:23,222 INFO L288 CegarLoopForPetriNet]: 143 programPoint places, 108 predicate places. [2022-11-21 14:05:23,222 INFO L495 AbstractCegarLoop]: Abstraction has has 251 places, 326 transitions, 5373 flow [2022-11-21 14:05:23,223 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 116.5) internal successors, (699), 6 states have internal predecessors, (699), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 14:05:23,223 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 14:05:23,223 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] [2022-11-21 14:05:23,223 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-11-21 14:05:23,224 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-11-21 14:05:23,224 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 14:05:23,224 INFO L85 PathProgramCache]: Analyzing trace with hash 2138539602, now seen corresponding path program 1 times [2022-11-21 14:05:23,224 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 14:05:23,225 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1413040187] [2022-11-21 14:05:23,225 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 14:05:23,225 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 14:05:23,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:05:23,487 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 14:05:23,487 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 14:05:23,488 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1413040187] [2022-11-21 14:05:23,488 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1413040187] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 14:05:23,488 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 14:05:23,488 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-21 14:05:23,488 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1428219307] [2022-11-21 14:05:23,489 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 14:05:23,489 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-21 14:05:23,489 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 14:05:23,490 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-21 14:05:23,490 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-11-21 14:05:23,491 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 111 out of 136 [2022-11-21 14:05:23,492 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 251 places, 326 transitions, 5373 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 14:05:23,492 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 14:05:23,492 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 111 of 136 [2022-11-21 14:05:23,492 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand