./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/pthread-wmm/safe014_rmo.opt.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version dbf71c69 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0622295-85dc-4eea-8d11-50caa66693c2/bin/uautomizer-J5u9QxTXDZ/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0622295-85dc-4eea-8d11-50caa66693c2/bin/uautomizer-J5u9QxTXDZ/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0622295-85dc-4eea-8d11-50caa66693c2/bin/uautomizer-J5u9QxTXDZ/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0622295-85dc-4eea-8d11-50caa66693c2/bin/uautomizer-J5u9QxTXDZ/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread-wmm/safe014_rmo.opt.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0622295-85dc-4eea-8d11-50caa66693c2/bin/uautomizer-J5u9QxTXDZ/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0622295-85dc-4eea-8d11-50caa66693c2/bin/uautomizer-J5u9QxTXDZ --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 09aaf4da9760e082dee1b84490861799ac10c7d3871bbdf2d8243e88d9e00b49 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-dbf71c6-m [2022-10-17 10:47:13,285 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-10-17 10:47:13,287 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-10-17 10:47:13,340 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-10-17 10:47:13,341 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-10-17 10:47:13,342 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-10-17 10:47:13,344 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-10-17 10:47:13,346 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-10-17 10:47:13,348 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-10-17 10:47:13,350 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-10-17 10:47:13,351 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-10-17 10:47:13,353 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-10-17 10:47:13,353 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-10-17 10:47:13,355 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-10-17 10:47:13,356 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-10-17 10:47:13,358 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-10-17 10:47:13,359 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-10-17 10:47:13,360 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-10-17 10:47:13,362 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-10-17 10:47:13,364 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-10-17 10:47:13,366 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-10-17 10:47:13,368 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-10-17 10:47:13,370 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-10-17 10:47:13,371 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-10-17 10:47:13,376 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-10-17 10:47:13,376 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-10-17 10:47:13,377 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-10-17 10:47:13,378 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-10-17 10:47:13,379 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-10-17 10:47:13,380 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-10-17 10:47:13,381 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-10-17 10:47:13,382 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-10-17 10:47:13,383 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-10-17 10:47:13,384 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-10-17 10:47:13,385 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-10-17 10:47:13,385 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-10-17 10:47:13,386 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-10-17 10:47:13,387 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-10-17 10:47:13,387 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-10-17 10:47:13,388 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-10-17 10:47:13,389 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-10-17 10:47:13,390 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0622295-85dc-4eea-8d11-50caa66693c2/bin/uautomizer-J5u9QxTXDZ/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-10-17 10:47:13,419 INFO L113 SettingsManager]: Loading preferences was successful [2022-10-17 10:47:13,419 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-10-17 10:47:13,420 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-10-17 10:47:13,420 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-10-17 10:47:13,421 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-10-17 10:47:13,421 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-10-17 10:47:13,422 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-10-17 10:47:13,422 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-10-17 10:47:13,422 INFO L138 SettingsManager]: * Use SBE=true [2022-10-17 10:47:13,423 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-10-17 10:47:13,423 INFO L138 SettingsManager]: * sizeof long=4 [2022-10-17 10:47:13,423 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-10-17 10:47:13,426 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-10-17 10:47:13,427 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-10-17 10:47:13,427 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-10-17 10:47:13,427 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-10-17 10:47:13,427 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-10-17 10:47:13,428 INFO L138 SettingsManager]: * sizeof long double=12 [2022-10-17 10:47:13,428 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-10-17 10:47:13,428 INFO L138 SettingsManager]: * Use constant arrays=true [2022-10-17 10:47:13,428 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-10-17 10:47:13,429 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-10-17 10:47:13,429 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-10-17 10:47:13,430 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-10-17 10:47:13,430 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-17 10:47:13,430 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-10-17 10:47:13,431 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-10-17 10:47:13,431 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-10-17 10:47:13,432 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-10-17 10:47:13,432 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-10-17 10:47:13,432 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-10-17 10:47:13,432 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-10-17 10:47:13,433 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-10-17 10:47:13,433 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_d0622295-85dc-4eea-8d11-50caa66693c2/bin/uautomizer-J5u9QxTXDZ/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0622295-85dc-4eea-8d11-50caa66693c2/bin/uautomizer-J5u9QxTXDZ Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 09aaf4da9760e082dee1b84490861799ac10c7d3871bbdf2d8243e88d9e00b49 [2022-10-17 10:47:13,758 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-10-17 10:47:13,779 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-10-17 10:47:13,781 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-10-17 10:47:13,783 INFO L271 PluginConnector]: Initializing CDTParser... [2022-10-17 10:47:13,784 INFO L275 PluginConnector]: CDTParser initialized [2022-10-17 10:47:13,785 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0622295-85dc-4eea-8d11-50caa66693c2/bin/uautomizer-J5u9QxTXDZ/../../sv-benchmarks/c/pthread-wmm/safe014_rmo.opt.i [2022-10-17 10:47:13,853 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0622295-85dc-4eea-8d11-50caa66693c2/bin/uautomizer-J5u9QxTXDZ/data/5f821499d/9558eabf03e14a459e9e2b79f0824a32/FLAG9470d7eff [2022-10-17 10:47:14,397 INFO L306 CDTParser]: Found 1 translation units. [2022-10-17 10:47:14,398 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0622295-85dc-4eea-8d11-50caa66693c2/sv-benchmarks/c/pthread-wmm/safe014_rmo.opt.i [2022-10-17 10:47:14,417 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0622295-85dc-4eea-8d11-50caa66693c2/bin/uautomizer-J5u9QxTXDZ/data/5f821499d/9558eabf03e14a459e9e2b79f0824a32/FLAG9470d7eff [2022-10-17 10:47:14,700 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0622295-85dc-4eea-8d11-50caa66693c2/bin/uautomizer-J5u9QxTXDZ/data/5f821499d/9558eabf03e14a459e9e2b79f0824a32 [2022-10-17 10:47:14,704 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-10-17 10:47:14,708 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-10-17 10:47:14,711 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-10-17 10:47:14,712 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-10-17 10:47:14,716 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-10-17 10:47:14,717 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.10 10:47:14" (1/1) ... [2022-10-17 10:47:14,720 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7061246d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:47:14, skipping insertion in model container [2022-10-17 10:47:14,720 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.10 10:47:14" (1/1) ... [2022-10-17 10:47:14,729 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-10-17 10:47:14,814 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-10-17 10:47:15,107 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0622295-85dc-4eea-8d11-50caa66693c2/sv-benchmarks/c/pthread-wmm/safe014_rmo.opt.i[992,1005] [2022-10-17 10:47:15,409 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-17 10:47:15,425 INFO L203 MainTranslator]: Completed pre-run [2022-10-17 10:47:15,449 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0622295-85dc-4eea-8d11-50caa66693c2/sv-benchmarks/c/pthread-wmm/safe014_rmo.opt.i[992,1005] [2022-10-17 10:47:15,545 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-17 10:47:15,599 INFO L208 MainTranslator]: Completed translation [2022-10-17 10:47:15,600 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:47:15 WrapperNode [2022-10-17 10:47:15,600 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-10-17 10:47:15,601 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-10-17 10:47:15,601 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-10-17 10:47:15,602 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-10-17 10:47:15,609 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:47:15" (1/1) ... [2022-10-17 10:47:15,649 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:47:15" (1/1) ... [2022-10-17 10:47:15,706 INFO L138 Inliner]: procedures = 176, calls = 82, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 259 [2022-10-17 10:47:15,706 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-10-17 10:47:15,707 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-10-17 10:47:15,707 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-10-17 10:47:15,711 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-10-17 10:47:15,721 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:47:15" (1/1) ... [2022-10-17 10:47:15,721 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:47:15" (1/1) ... [2022-10-17 10:47:15,738 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:47:15" (1/1) ... [2022-10-17 10:47:15,745 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:47:15" (1/1) ... [2022-10-17 10:47:15,777 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:47:15" (1/1) ... [2022-10-17 10:47:15,783 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:47:15" (1/1) ... [2022-10-17 10:47:15,793 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:47:15" (1/1) ... [2022-10-17 10:47:15,810 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:47:15" (1/1) ... [2022-10-17 10:47:15,816 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-10-17 10:47:15,820 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-10-17 10:47:15,820 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-10-17 10:47:15,821 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-10-17 10:47:15,822 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:47:15" (1/1) ... [2022-10-17 10:47:15,830 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-17 10:47:15,849 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0622295-85dc-4eea-8d11-50caa66693c2/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 10:47:15,865 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0622295-85dc-4eea-8d11-50caa66693c2/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-10-17 10:47:15,881 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0622295-85dc-4eea-8d11-50caa66693c2/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-10-17 10:47:15,919 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-10-17 10:47:15,919 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-10-17 10:47:15,919 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-10-17 10:47:15,919 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-10-17 10:47:15,920 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-10-17 10:47:15,920 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-10-17 10:47:15,920 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2022-10-17 10:47:15,920 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2022-10-17 10:47:15,920 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2022-10-17 10:47:15,921 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2022-10-17 10:47:15,921 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2022-10-17 10:47:15,921 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2022-10-17 10:47:15,921 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-10-17 10:47:15,922 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-10-17 10:47:15,922 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-10-17 10:47:15,922 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-10-17 10:47:15,925 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-10-17 10:47:16,200 INFO L235 CfgBuilder]: Building ICFG [2022-10-17 10:47:16,202 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-10-17 10:47:17,422 INFO L276 CfgBuilder]: Performing block encoding [2022-10-17 10:47:18,318 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-10-17 10:47:18,318 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-10-17 10:47:18,321 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.10 10:47:18 BoogieIcfgContainer [2022-10-17 10:47:18,321 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-10-17 10:47:18,324 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-10-17 10:47:18,324 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-10-17 10:47:18,328 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-10-17 10:47:18,328 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.10 10:47:14" (1/3) ... [2022-10-17 10:47:18,329 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6c9ec1d6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.10 10:47:18, skipping insertion in model container [2022-10-17 10:47:18,329 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:47:15" (2/3) ... [2022-10-17 10:47:18,330 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6c9ec1d6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.10 10:47:18, skipping insertion in model container [2022-10-17 10:47:18,330 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.10 10:47:18" (3/3) ... [2022-10-17 10:47:18,331 INFO L112 eAbstractionObserver]: Analyzing ICFG safe014_rmo.opt.i [2022-10-17 10:47:18,341 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-10-17 10:47:18,353 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-10-17 10:47:18,353 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-10-17 10:47:18,353 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-10-17 10:47:18,466 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-10-17 10:47:18,516 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 140 places, 132 transitions, 279 flow [2022-10-17 10:47:18,607 INFO L130 PetriNetUnfolder]: 2/129 cut-off events. [2022-10-17 10:47:18,607 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-10-17 10:47:18,612 INFO L83 FinitePrefix]: Finished finitePrefix Result has 139 conditions, 129 events. 2/129 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 49 event pairs, 0 based on Foata normal form. 0/126 useless extension candidates. Maximal degree in co-relation 71. Up to 2 conditions per place. [2022-10-17 10:47:18,612 INFO L82 GeneralOperation]: Start removeDead. Operand has 140 places, 132 transitions, 279 flow [2022-10-17 10:47:18,620 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 124 places, 115 transitions, 239 flow [2022-10-17 10:47:18,634 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-10-17 10:47:18,644 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;@2789e98e, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-10-17 10:47:18,644 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2022-10-17 10:47:18,743 INFO L130 PetriNetUnfolder]: 1/114 cut-off events. [2022-10-17 10:47:18,743 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-10-17 10:47:18,744 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-10-17 10:47:18,745 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:47:18,746 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-10-17 10:47:18,751 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:47:18,752 INFO L85 PathProgramCache]: Analyzing trace with hash 1658054542, now seen corresponding path program 1 times [2022-10-17 10:47:18,764 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:47:18,764 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1886204290] [2022-10-17 10:47:18,765 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:47:18,766 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:47:19,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:47:20,216 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 10:47:20,217 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:47:20,218 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1886204290] [2022-10-17 10:47:20,219 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1886204290] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:47:20,219 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:47:20,219 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-10-17 10:47:20,221 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [740492827] [2022-10-17 10:47:20,222 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:47:20,234 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-10-17 10:47:20,235 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:47:20,284 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-10-17 10:47:20,287 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-10-17 10:47:20,300 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 112 out of 132 [2022-10-17 10:47:20,308 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 124 places, 115 transitions, 239 flow. Second operand has 6 states, 6 states have (on average 113.83333333333333) internal successors, (683), 6 states have internal predecessors, (683), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:47:20,308 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-10-17 10:47:20,309 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 112 of 132 [2022-10-17 10:47:20,310 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-10-17 10:47:21,351 INFO L130 PetriNetUnfolder]: 278/706 cut-off events. [2022-10-17 10:47:21,351 INFO L131 PetriNetUnfolder]: For 10/10 co-relation queries the response was YES. [2022-10-17 10:47:21,355 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1188 conditions, 706 events. 278/706 cut-off events. For 10/10 co-relation queries the response was YES. Maximal size of possible extension queue 66. Compared 3773 event pairs, 144 based on Foata normal form. 21/701 useless extension candidates. Maximal degree in co-relation 1116. Up to 239 conditions per place. [2022-10-17 10:47:21,361 INFO L137 encePairwiseOnDemand]: 125/132 looper letters, 20 selfloop transitions, 2 changer transitions 31/151 dead transitions. [2022-10-17 10:47:21,361 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 132 places, 151 transitions, 423 flow [2022-10-17 10:47:21,363 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-10-17 10:47:21,366 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-10-17 10:47:21,379 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1065 transitions. [2022-10-17 10:47:21,384 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8964646464646465 [2022-10-17 10:47:21,385 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1065 transitions. [2022-10-17 10:47:21,386 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1065 transitions. [2022-10-17 10:47:21,390 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-10-17 10:47:21,393 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1065 transitions. [2022-10-17 10:47:21,400 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 118.33333333333333) internal successors, (1065), 9 states have internal predecessors, (1065), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:47:21,411 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 132.0) internal successors, (1320), 10 states have internal predecessors, (1320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:47:21,413 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 132.0) internal successors, (1320), 10 states have internal predecessors, (1320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:47:21,415 INFO L175 Difference]: Start difference. First operand has 124 places, 115 transitions, 239 flow. Second operand 9 states and 1065 transitions. [2022-10-17 10:47:21,417 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 132 places, 151 transitions, 423 flow [2022-10-17 10:47:21,421 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 129 places, 151 transitions, 418 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-10-17 10:47:21,427 INFO L231 Difference]: Finished difference. Result has 136 places, 114 transitions, 254 flow [2022-10-17 10:47:21,430 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=132, PETRI_DIFFERENCE_MINUEND_FLOW=234, PETRI_DIFFERENCE_MINUEND_PLACES=121, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=114, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=112, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=254, PETRI_PLACES=136, PETRI_TRANSITIONS=114} [2022-10-17 10:47:21,434 INFO L287 CegarLoopForPetriNet]: 124 programPoint places, 12 predicate places. [2022-10-17 10:47:21,434 INFO L495 AbstractCegarLoop]: Abstraction has has 136 places, 114 transitions, 254 flow [2022-10-17 10:47:21,436 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 113.83333333333333) internal successors, (683), 6 states have internal predecessors, (683), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:47:21,436 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-10-17 10:47:21,436 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:47:21,437 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-10-17 10:47:21,437 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-10-17 10:47:21,438 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:47:21,438 INFO L85 PathProgramCache]: Analyzing trace with hash -2026742867, now seen corresponding path program 1 times [2022-10-17 10:47:21,438 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:47:21,439 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1988159540] [2022-10-17 10:47:21,439 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:47:21,439 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:47:21,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:47:21,987 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 10:47:21,987 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:47:21,987 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1988159540] [2022-10-17 10:47:21,987 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1988159540] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:47:21,988 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:47:21,988 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-10-17 10:47:21,988 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1197586218] [2022-10-17 10:47:21,988 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:47:21,990 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-10-17 10:47:21,990 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:47:21,991 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-10-17 10:47:21,991 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-10-17 10:47:21,993 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 110 out of 132 [2022-10-17 10:47:21,995 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 136 places, 114 transitions, 254 flow. Second operand has 7 states, 7 states have (on average 111.85714285714286) internal successors, (783), 7 states have internal predecessors, (783), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:47:21,995 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-10-17 10:47:21,995 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 110 of 132 [2022-10-17 10:47:21,996 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-10-17 10:47:22,810 INFO L130 PetriNetUnfolder]: 266/671 cut-off events. [2022-10-17 10:47:22,811 INFO L131 PetriNetUnfolder]: For 157/157 co-relation queries the response was YES. [2022-10-17 10:47:22,815 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1322 conditions, 671 events. 266/671 cut-off events. For 157/157 co-relation queries the response was YES. Maximal size of possible extension queue 49. Compared 3458 event pairs, 64 based on Foata normal form. 16/655 useless extension candidates. Maximal degree in co-relation 1248. Up to 141 conditions per place. [2022-10-17 10:47:22,819 INFO L137 encePairwiseOnDemand]: 124/132 looper letters, 19 selfloop transitions, 4 changer transitions 32/151 dead transitions. [2022-10-17 10:47:22,819 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 139 places, 151 transitions, 461 flow [2022-10-17 10:47:22,820 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-10-17 10:47:22,820 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-10-17 10:47:22,824 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1157 transitions. [2022-10-17 10:47:22,825 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8765151515151515 [2022-10-17 10:47:22,825 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1157 transitions. [2022-10-17 10:47:22,825 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1157 transitions. [2022-10-17 10:47:22,826 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-10-17 10:47:22,826 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1157 transitions. [2022-10-17 10:47:22,831 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 115.7) internal successors, (1157), 10 states have internal predecessors, (1157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:47:22,835 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 132.0) internal successors, (1452), 11 states have internal predecessors, (1452), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:47:22,836 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 132.0) internal successors, (1452), 11 states have internal predecessors, (1452), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:47:22,836 INFO L175 Difference]: Start difference. First operand has 136 places, 114 transitions, 254 flow. Second operand 10 states and 1157 transitions. [2022-10-17 10:47:22,837 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 139 places, 151 transitions, 461 flow [2022-10-17 10:47:22,845 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 131 places, 151 transitions, 427 flow, removed 14 selfloop flow, removed 8 redundant places. [2022-10-17 10:47:22,850 INFO L231 Difference]: Finished difference. Result has 139 places, 114 transitions, 268 flow [2022-10-17 10:47:22,850 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=132, PETRI_DIFFERENCE_MINUEND_FLOW=238, PETRI_DIFFERENCE_MINUEND_PLACES=122, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=114, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=110, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=268, PETRI_PLACES=139, PETRI_TRANSITIONS=114} [2022-10-17 10:47:22,852 INFO L287 CegarLoopForPetriNet]: 124 programPoint places, 15 predicate places. [2022-10-17 10:47:22,852 INFO L495 AbstractCegarLoop]: Abstraction has has 139 places, 114 transitions, 268 flow [2022-10-17 10:47:22,854 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 111.85714285714286) internal successors, (783), 7 states have internal predecessors, (783), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:47:22,854 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-10-17 10:47:22,855 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:47:22,855 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-10-17 10:47:22,855 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-10-17 10:47:22,856 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:47:22,857 INFO L85 PathProgramCache]: Analyzing trace with hash 1277024011, now seen corresponding path program 1 times [2022-10-17 10:47:22,857 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:47:22,857 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [675310915] [2022-10-17 10:47:22,857 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:47:22,857 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:47:23,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:47:23,574 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 10:47:23,576 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:47:23,576 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [675310915] [2022-10-17 10:47:23,577 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [675310915] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:47:23,577 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:47:23,578 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-10-17 10:47:23,578 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1373479651] [2022-10-17 10:47:23,579 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:47:23,580 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-10-17 10:47:23,581 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:47:23,581 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-10-17 10:47:23,582 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-10-17 10:47:23,584 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 109 out of 132 [2022-10-17 10:47:23,586 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 139 places, 114 transitions, 268 flow. Second operand has 6 states, 6 states have (on average 111.16666666666667) internal successors, (667), 6 states have internal predecessors, (667), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:47:23,586 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-10-17 10:47:23,586 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 109 of 132 [2022-10-17 10:47:23,587 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-10-17 10:47:24,440 INFO L130 PetriNetUnfolder]: 554/1295 cut-off events. [2022-10-17 10:47:24,440 INFO L131 PetriNetUnfolder]: For 122/123 co-relation queries the response was YES. [2022-10-17 10:47:24,446 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2410 conditions, 1295 events. 554/1295 cut-off events. For 122/123 co-relation queries the response was YES. Maximal size of possible extension queue 104. Compared 7948 event pairs, 27 based on Foata normal form. 0/1270 useless extension candidates. Maximal degree in co-relation 2328. Up to 356 conditions per place. [2022-10-17 10:47:24,452 INFO L137 encePairwiseOnDemand]: 122/132 looper letters, 28 selfloop transitions, 6 changer transitions 45/173 dead transitions. [2022-10-17 10:47:24,452 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 142 places, 173 transitions, 546 flow [2022-10-17 10:47:24,453 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-10-17 10:47:24,453 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-10-17 10:47:24,457 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1171 transitions. [2022-10-17 10:47:24,458 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8871212121212121 [2022-10-17 10:47:24,458 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1171 transitions. [2022-10-17 10:47:24,458 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1171 transitions. [2022-10-17 10:47:24,459 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-10-17 10:47:24,459 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1171 transitions. [2022-10-17 10:47:24,464 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 117.1) internal successors, (1171), 10 states have internal predecessors, (1171), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:47:24,468 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 132.0) internal successors, (1452), 11 states have internal predecessors, (1452), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:47:24,469 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 132.0) internal successors, (1452), 11 states have internal predecessors, (1452), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:47:24,469 INFO L175 Difference]: Start difference. First operand has 139 places, 114 transitions, 268 flow. Second operand 10 states and 1171 transitions. [2022-10-17 10:47:24,469 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 142 places, 173 transitions, 546 flow [2022-10-17 10:47:24,474 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 132 places, 173 transitions, 520 flow, removed 8 selfloop flow, removed 10 redundant places. [2022-10-17 10:47:24,478 INFO L231 Difference]: Finished difference. Result has 138 places, 116 transitions, 296 flow [2022-10-17 10:47:24,478 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=132, PETRI_DIFFERENCE_MINUEND_FLOW=242, PETRI_DIFFERENCE_MINUEND_PLACES=123, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=114, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=108, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=296, PETRI_PLACES=138, PETRI_TRANSITIONS=116} [2022-10-17 10:47:24,479 INFO L287 CegarLoopForPetriNet]: 124 programPoint places, 14 predicate places. [2022-10-17 10:47:24,479 INFO L495 AbstractCegarLoop]: Abstraction has has 138 places, 116 transitions, 296 flow [2022-10-17 10:47:24,480 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 111.16666666666667) internal successors, (667), 6 states have internal predecessors, (667), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:47:24,480 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-10-17 10:47:24,480 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:47:24,480 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-10-17 10:47:24,481 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-10-17 10:47:24,481 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:47:24,481 INFO L85 PathProgramCache]: Analyzing trace with hash 1519809872, now seen corresponding path program 1 times [2022-10-17 10:47:24,481 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:47:24,482 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1702669065] [2022-10-17 10:47:24,482 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:47:24,482 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:47:24,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:47:24,962 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 10:47:24,962 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:47:24,962 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1702669065] [2022-10-17 10:47:24,963 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1702669065] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:47:24,963 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:47:24,963 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-10-17 10:47:24,963 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1119549174] [2022-10-17 10:47:24,964 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:47:24,964 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-10-17 10:47:24,964 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:47:24,965 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-10-17 10:47:24,965 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-10-17 10:47:24,967 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 109 out of 132 [2022-10-17 10:47:24,968 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 138 places, 116 transitions, 296 flow. Second operand has 7 states, 7 states have (on average 111.14285714285714) internal successors, (778), 7 states have internal predecessors, (778), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:47:24,968 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-10-17 10:47:24,968 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 109 of 132 [2022-10-17 10:47:24,969 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-10-17 10:47:25,506 INFO L130 PetriNetUnfolder]: 191/554 cut-off events. [2022-10-17 10:47:25,507 INFO L131 PetriNetUnfolder]: For 546/550 co-relation queries the response was YES. [2022-10-17 10:47:25,509 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1424 conditions, 554 events. 191/554 cut-off events. For 546/550 co-relation queries the response was YES. Maximal size of possible extension queue 41. Compared 2523 event pairs, 13 based on Foata normal form. 20/570 useless extension candidates. Maximal degree in co-relation 1344. Up to 138 conditions per place. [2022-10-17 10:47:25,512 INFO L137 encePairwiseOnDemand]: 123/132 looper letters, 30 selfloop transitions, 9 changer transitions 33/166 dead transitions. [2022-10-17 10:47:25,512 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 141 places, 166 transitions, 669 flow [2022-10-17 10:47:25,513 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-10-17 10:47:25,513 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-10-17 10:47:25,517 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1164 transitions. [2022-10-17 10:47:25,518 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8818181818181818 [2022-10-17 10:47:25,518 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1164 transitions. [2022-10-17 10:47:25,518 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1164 transitions. [2022-10-17 10:47:25,520 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-10-17 10:47:25,520 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1164 transitions. [2022-10-17 10:47:25,524 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 116.4) internal successors, (1164), 10 states have internal predecessors, (1164), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:47:25,528 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 132.0) internal successors, (1452), 11 states have internal predecessors, (1452), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:47:25,529 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 132.0) internal successors, (1452), 11 states have internal predecessors, (1452), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:47:25,529 INFO L175 Difference]: Start difference. First operand has 138 places, 116 transitions, 296 flow. Second operand 10 states and 1164 transitions. [2022-10-17 10:47:25,529 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 141 places, 166 transitions, 669 flow [2022-10-17 10:47:25,534 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 136 places, 166 transitions, 645 flow, removed 7 selfloop flow, removed 5 redundant places. [2022-10-17 10:47:25,537 INFO L231 Difference]: Finished difference. Result has 142 places, 119 transitions, 364 flow [2022-10-17 10:47:25,538 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=132, PETRI_DIFFERENCE_MINUEND_FLOW=282, PETRI_DIFFERENCE_MINUEND_PLACES=127, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=116, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=107, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=364, PETRI_PLACES=142, PETRI_TRANSITIONS=119} [2022-10-17 10:47:25,539 INFO L287 CegarLoopForPetriNet]: 124 programPoint places, 18 predicate places. [2022-10-17 10:47:25,539 INFO L495 AbstractCegarLoop]: Abstraction has has 142 places, 119 transitions, 364 flow [2022-10-17 10:47:25,540 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 111.14285714285714) internal successors, (778), 7 states have internal predecessors, (778), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:47:25,540 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-10-17 10:47:25,540 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:47:25,541 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-10-17 10:47:25,541 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-10-17 10:47:25,541 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:47:25,542 INFO L85 PathProgramCache]: Analyzing trace with hash 900710369, now seen corresponding path program 1 times [2022-10-17 10:47:25,542 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:47:25,542 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [466060930] [2022-10-17 10:47:25,542 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:47:25,542 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:47:25,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:47:30,485 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 10:47:30,486 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:47:30,486 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [466060930] [2022-10-17 10:47:30,486 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [466060930] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:47:30,487 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:47:30,487 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2022-10-17 10:47:30,487 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [783184481] [2022-10-17 10:47:30,487 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:47:30,488 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-10-17 10:47:30,488 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:47:30,488 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-10-17 10:47:30,489 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=173, Unknown=0, NotChecked=0, Total=240 [2022-10-17 10:47:30,493 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 96 out of 132 [2022-10-17 10:47:30,496 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 142 places, 119 transitions, 364 flow. Second operand has 16 states, 16 states have (on average 97.8125) internal successors, (1565), 16 states have internal predecessors, (1565), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:47:30,496 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-10-17 10:47:30,496 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 96 of 132 [2022-10-17 10:47:30,496 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-10-17 10:47:31,360 INFO L130 PetriNetUnfolder]: 107/583 cut-off events. [2022-10-17 10:47:31,360 INFO L131 PetriNetUnfolder]: For 830/868 co-relation queries the response was YES. [2022-10-17 10:47:31,363 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1391 conditions, 583 events. 107/583 cut-off events. For 830/868 co-relation queries the response was YES. Maximal size of possible extension queue 29. Compared 3038 event pairs, 33 based on Foata normal form. 20/590 useless extension candidates. Maximal degree in co-relation 1294. Up to 110 conditions per place. [2022-10-17 10:47:31,367 INFO L137 encePairwiseOnDemand]: 117/132 looper letters, 30 selfloop transitions, 11 changer transitions 25/153 dead transitions. [2022-10-17 10:47:31,367 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 154 places, 153 transitions, 566 flow [2022-10-17 10:47:31,367 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-10-17 10:47:31,368 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2022-10-17 10:47:31,372 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 1700 transitions. [2022-10-17 10:47:31,374 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.7575757575757576 [2022-10-17 10:47:31,374 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 1700 transitions. [2022-10-17 10:47:31,374 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 1700 transitions. [2022-10-17 10:47:31,375 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-10-17 10:47:31,376 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 1700 transitions. [2022-10-17 10:47:31,381 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 100.0) internal successors, (1700), 17 states have internal predecessors, (1700), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:47:31,387 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 132.0) internal successors, (2376), 18 states have internal predecessors, (2376), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:47:31,388 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 132.0) internal successors, (2376), 18 states have internal predecessors, (2376), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:47:31,389 INFO L175 Difference]: Start difference. First operand has 142 places, 119 transitions, 364 flow. Second operand 17 states and 1700 transitions. [2022-10-17 10:47:31,389 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 154 places, 153 transitions, 566 flow [2022-10-17 10:47:31,394 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 145 places, 153 transitions, 510 flow, removed 20 selfloop flow, removed 9 redundant places. [2022-10-17 10:47:31,397 INFO L231 Difference]: Finished difference. Result has 152 places, 121 transitions, 367 flow [2022-10-17 10:47:31,397 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=132, PETRI_DIFFERENCE_MINUEND_FLOW=308, PETRI_DIFFERENCE_MINUEND_PLACES=129, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=119, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=108, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=367, PETRI_PLACES=152, PETRI_TRANSITIONS=121} [2022-10-17 10:47:31,398 INFO L287 CegarLoopForPetriNet]: 124 programPoint places, 28 predicate places. [2022-10-17 10:47:31,399 INFO L495 AbstractCegarLoop]: Abstraction has has 152 places, 121 transitions, 367 flow [2022-10-17 10:47:31,400 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 97.8125) internal successors, (1565), 16 states have internal predecessors, (1565), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:47:31,400 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-10-17 10:47:31,400 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:47:31,400 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-10-17 10:47:31,401 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-10-17 10:47:31,401 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:47:31,401 INFO L85 PathProgramCache]: Analyzing trace with hash 986469470, now seen corresponding path program 1 times [2022-10-17 10:47:31,402 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:47:31,402 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [582337385] [2022-10-17 10:47:31,402 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:47:31,402 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:47:31,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:47:32,962 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 10:47:32,962 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:47:32,963 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [582337385] [2022-10-17 10:47:32,963 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [582337385] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:47:32,963 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:47:32,963 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-10-17 10:47:32,964 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [443780376] [2022-10-17 10:47:32,964 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:47:32,965 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-10-17 10:47:32,965 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:47:32,966 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-10-17 10:47:32,968 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-10-17 10:47:32,970 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 103 out of 132 [2022-10-17 10:47:32,971 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 152 places, 121 transitions, 367 flow. Second operand has 8 states, 8 states have (on average 105.875) internal successors, (847), 8 states have internal predecessors, (847), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:47:32,972 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-10-17 10:47:32,972 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 103 of 132 [2022-10-17 10:47:32,972 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-10-17 10:47:33,390 INFO L130 PetriNetUnfolder]: 97/515 cut-off events. [2022-10-17 10:47:33,390 INFO L131 PetriNetUnfolder]: For 514/528 co-relation queries the response was YES. [2022-10-17 10:47:33,393 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1217 conditions, 515 events. 97/515 cut-off events. For 514/528 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 2472 event pairs, 42 based on Foata normal form. 9/509 useless extension candidates. Maximal degree in co-relation 1144. Up to 151 conditions per place. [2022-10-17 10:47:33,396 INFO L137 encePairwiseOnDemand]: 120/132 looper letters, 25 selfloop transitions, 9 changer transitions 13/141 dead transitions. [2022-10-17 10:47:33,396 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 156 places, 141 transitions, 558 flow [2022-10-17 10:47:33,397 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-10-17 10:47:33,397 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2022-10-17 10:47:33,400 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 1180 transitions. [2022-10-17 10:47:33,401 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8126721763085399 [2022-10-17 10:47:33,401 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 1180 transitions. [2022-10-17 10:47:33,401 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 1180 transitions. [2022-10-17 10:47:33,403 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-10-17 10:47:33,403 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 1180 transitions. [2022-10-17 10:47:33,406 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 107.27272727272727) internal successors, (1180), 11 states have internal predecessors, (1180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:47:33,410 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 132.0) internal successors, (1584), 12 states have internal predecessors, (1584), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:47:33,411 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 132.0) internal successors, (1584), 12 states have internal predecessors, (1584), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:47:33,412 INFO L175 Difference]: Start difference. First operand has 152 places, 121 transitions, 367 flow. Second operand 11 states and 1180 transitions. [2022-10-17 10:47:33,412 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 156 places, 141 transitions, 558 flow [2022-10-17 10:47:33,417 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 144 places, 141 transitions, 518 flow, removed 10 selfloop flow, removed 12 redundant places. [2022-10-17 10:47:33,420 INFO L231 Difference]: Finished difference. Result has 151 places, 126 transitions, 411 flow [2022-10-17 10:47:33,420 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=132, PETRI_DIFFERENCE_MINUEND_FLOW=336, PETRI_DIFFERENCE_MINUEND_PLACES=134, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=121, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=112, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=411, PETRI_PLACES=151, PETRI_TRANSITIONS=126} [2022-10-17 10:47:33,423 INFO L287 CegarLoopForPetriNet]: 124 programPoint places, 27 predicate places. [2022-10-17 10:47:33,424 INFO L495 AbstractCegarLoop]: Abstraction has has 151 places, 126 transitions, 411 flow [2022-10-17 10:47:33,424 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 105.875) internal successors, (847), 8 states have internal predecessors, (847), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:47:33,425 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-10-17 10:47:33,425 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:47:33,425 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-10-17 10:47:33,425 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-10-17 10:47:33,426 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:47:33,426 INFO L85 PathProgramCache]: Analyzing trace with hash -1963073112, now seen corresponding path program 2 times [2022-10-17 10:47:33,426 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:47:33,426 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1290581153] [2022-10-17 10:47:33,427 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:47:33,427 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:47:33,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:47:37,041 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 10:47:37,043 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:47:37,044 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1290581153] [2022-10-17 10:47:37,044 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1290581153] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:47:37,045 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:47:37,045 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-10-17 10:47:37,049 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [350806884] [2022-10-17 10:47:37,050 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:47:37,051 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-10-17 10:47:37,051 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:47:37,053 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-10-17 10:47:37,054 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=115, Unknown=0, NotChecked=0, Total=156 [2022-10-17 10:47:37,056 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 100 out of 132 [2022-10-17 10:47:37,060 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 151 places, 126 transitions, 411 flow. Second operand has 13 states, 13 states have (on average 102.0) internal successors, (1326), 13 states have internal predecessors, (1326), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:47:37,060 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-10-17 10:47:37,060 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 100 of 132 [2022-10-17 10:47:37,060 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-10-17 10:47:37,672 INFO L130 PetriNetUnfolder]: 98/535 cut-off events. [2022-10-17 10:47:37,673 INFO L131 PetriNetUnfolder]: For 853/895 co-relation queries the response was YES. [2022-10-17 10:47:37,676 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1382 conditions, 535 events. 98/535 cut-off events. For 853/895 co-relation queries the response was YES. Maximal size of possible extension queue 29. Compared 2655 event pairs, 42 based on Foata normal form. 14/534 useless extension candidates. Maximal degree in co-relation 1306. Up to 140 conditions per place. [2022-10-17 10:47:37,680 INFO L137 encePairwiseOnDemand]: 120/132 looper letters, 30 selfloop transitions, 11 changer transitions 13/145 dead transitions. [2022-10-17 10:47:37,680 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 158 places, 145 transitions, 661 flow [2022-10-17 10:47:37,681 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-10-17 10:47:37,681 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2022-10-17 10:47:37,686 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 1450 transitions. [2022-10-17 10:47:37,687 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.7846320346320347 [2022-10-17 10:47:37,687 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 1450 transitions. [2022-10-17 10:47:37,687 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 1450 transitions. [2022-10-17 10:47:37,689 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-10-17 10:47:37,689 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 1450 transitions. [2022-10-17 10:47:37,694 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 103.57142857142857) internal successors, (1450), 14 states have internal predecessors, (1450), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:47:37,699 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 132.0) internal successors, (1980), 15 states have internal predecessors, (1980), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:47:37,700 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 132.0) internal successors, (1980), 15 states have internal predecessors, (1980), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:47:37,700 INFO L175 Difference]: Start difference. First operand has 151 places, 126 transitions, 411 flow. Second operand 14 states and 1450 transitions. [2022-10-17 10:47:37,700 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 158 places, 145 transitions, 661 flow [2022-10-17 10:47:37,706 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 149 places, 145 transitions, 574 flow, removed 38 selfloop flow, removed 9 redundant places. [2022-10-17 10:47:37,709 INFO L231 Difference]: Finished difference. Result has 156 places, 128 transitions, 438 flow [2022-10-17 10:47:37,710 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=132, PETRI_DIFFERENCE_MINUEND_FLOW=372, PETRI_DIFFERENCE_MINUEND_PLACES=136, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=126, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=115, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=438, PETRI_PLACES=156, PETRI_TRANSITIONS=128} [2022-10-17 10:47:37,711 INFO L287 CegarLoopForPetriNet]: 124 programPoint places, 32 predicate places. [2022-10-17 10:47:37,711 INFO L495 AbstractCegarLoop]: Abstraction has has 156 places, 128 transitions, 438 flow [2022-10-17 10:47:37,712 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 102.0) internal successors, (1326), 13 states have internal predecessors, (1326), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:47:37,712 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-10-17 10:47:37,713 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:47:37,713 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-10-17 10:47:37,714 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-10-17 10:47:37,714 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:47:37,715 INFO L85 PathProgramCache]: Analyzing trace with hash -1858456066, now seen corresponding path program 1 times [2022-10-17 10:47:37,715 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:47:37,715 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1580624925] [2022-10-17 10:47:37,715 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:47:37,715 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:47:37,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:47:38,296 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 10:47:38,297 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:47:38,301 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1580624925] [2022-10-17 10:47:38,301 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1580624925] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:47:38,301 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:47:38,301 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-10-17 10:47:38,302 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [825657459] [2022-10-17 10:47:38,302 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:47:38,302 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-10-17 10:47:38,303 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:47:38,303 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-10-17 10:47:38,303 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-10-17 10:47:38,305 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 109 out of 132 [2022-10-17 10:47:38,307 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 156 places, 128 transitions, 438 flow. Second operand has 8 states, 8 states have (on average 111.125) internal successors, (889), 8 states have internal predecessors, (889), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:47:38,307 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-10-17 10:47:38,307 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 109 of 132 [2022-10-17 10:47:38,307 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-10-17 10:47:38,726 INFO L130 PetriNetUnfolder]: 126/511 cut-off events. [2022-10-17 10:47:38,727 INFO L131 PetriNetUnfolder]: For 589/603 co-relation queries the response was YES. [2022-10-17 10:47:38,730 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1321 conditions, 511 events. 126/511 cut-off events. For 589/603 co-relation queries the response was YES. Maximal size of possible extension queue 39. Compared 2521 event pairs, 14 based on Foata normal form. 16/520 useless extension candidates. Maximal degree in co-relation 1296. Up to 82 conditions per place. [2022-10-17 10:47:38,732 INFO L137 encePairwiseOnDemand]: 123/132 looper letters, 25 selfloop transitions, 14 changer transitions 19/157 dead transitions. [2022-10-17 10:47:38,733 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 160 places, 157 transitions, 705 flow [2022-10-17 10:47:38,733 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-10-17 10:47:38,734 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2022-10-17 10:47:38,737 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 1253 transitions. [2022-10-17 10:47:38,738 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8629476584022039 [2022-10-17 10:47:38,738 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 1253 transitions. [2022-10-17 10:47:38,739 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 1253 transitions. [2022-10-17 10:47:38,740 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-10-17 10:47:38,740 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 1253 transitions. [2022-10-17 10:47:38,744 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 113.9090909090909) internal successors, (1253), 11 states have internal predecessors, (1253), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:47:38,748 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 132.0) internal successors, (1584), 12 states have internal predecessors, (1584), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:47:38,749 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 132.0) internal successors, (1584), 12 states have internal predecessors, (1584), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:47:38,750 INFO L175 Difference]: Start difference. First operand has 156 places, 128 transitions, 438 flow. Second operand 11 states and 1253 transitions. [2022-10-17 10:47:38,750 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 160 places, 157 transitions, 705 flow [2022-10-17 10:47:38,755 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 144 places, 157 transitions, 631 flow, removed 28 selfloop flow, removed 16 redundant places. [2022-10-17 10:47:38,758 INFO L231 Difference]: Finished difference. Result has 150 places, 130 transitions, 437 flow [2022-10-17 10:47:38,759 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=132, PETRI_DIFFERENCE_MINUEND_FLOW=376, PETRI_DIFFERENCE_MINUEND_PLACES=134, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=128, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=114, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=437, PETRI_PLACES=150, PETRI_TRANSITIONS=130} [2022-10-17 10:47:38,762 INFO L287 CegarLoopForPetriNet]: 124 programPoint places, 26 predicate places. [2022-10-17 10:47:38,763 INFO L495 AbstractCegarLoop]: Abstraction has has 150 places, 130 transitions, 437 flow [2022-10-17 10:47:38,764 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 111.125) internal successors, (889), 8 states have internal predecessors, (889), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:47:38,764 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-10-17 10:47:38,764 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:47:38,764 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-10-17 10:47:38,765 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-10-17 10:47:38,765 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:47:38,765 INFO L85 PathProgramCache]: Analyzing trace with hash -2133817679, now seen corresponding path program 1 times [2022-10-17 10:47:38,765 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:47:38,766 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2008284774] [2022-10-17 10:47:38,766 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:47:38,766 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:47:38,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat