./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/pthread-wmm/mix046.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_a14cfbf9-eab5-47c3-99a8-2ba12008fdb8/bin/uautomizer-J5u9QxTXDZ/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a14cfbf9-eab5-47c3-99a8-2ba12008fdb8/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_a14cfbf9-eab5-47c3-99a8-2ba12008fdb8/bin/uautomizer-J5u9QxTXDZ/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a14cfbf9-eab5-47c3-99a8-2ba12008fdb8/bin/uautomizer-J5u9QxTXDZ/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread-wmm/mix046.opt.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a14cfbf9-eab5-47c3-99a8-2ba12008fdb8/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_a14cfbf9-eab5-47c3-99a8-2ba12008fdb8/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 f69f777f524a62a415fc7cacc9442c44e05883e29c36815b4e0d58199826b331 --- 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 10:20:07,356 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-10-17 10:20:07,359 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-10-17 10:20:07,429 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-10-17 10:20:07,430 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-10-17 10:20:07,435 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-10-17 10:20:07,439 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-10-17 10:20:07,447 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-10-17 10:20:07,450 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-10-17 10:20:07,459 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-10-17 10:20:07,461 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-10-17 10:20:07,462 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-10-17 10:20:07,464 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-10-17 10:20:07,467 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-10-17 10:20:07,470 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-10-17 10:20:07,473 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-10-17 10:20:07,475 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-10-17 10:20:07,477 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-10-17 10:20:07,479 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-10-17 10:20:07,495 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-10-17 10:20:07,498 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-10-17 10:20:07,500 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-10-17 10:20:07,504 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-10-17 10:20:07,506 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-10-17 10:20:07,511 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-10-17 10:20:07,512 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-10-17 10:20:07,512 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-10-17 10:20:07,515 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-10-17 10:20:07,516 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-10-17 10:20:07,517 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-10-17 10:20:07,519 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-10-17 10:20:07,520 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-10-17 10:20:07,523 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-10-17 10:20:07,524 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-10-17 10:20:07,526 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-10-17 10:20:07,526 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-10-17 10:20:07,527 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-10-17 10:20:07,528 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-10-17 10:20:07,528 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-10-17 10:20:07,530 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-10-17 10:20:07,530 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-10-17 10:20:07,532 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a14cfbf9-eab5-47c3-99a8-2ba12008fdb8/bin/uautomizer-J5u9QxTXDZ/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-10-17 10:20:07,609 INFO L113 SettingsManager]: Loading preferences was successful [2022-10-17 10:20:07,610 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-10-17 10:20:07,611 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-10-17 10:20:07,611 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-10-17 10:20:07,612 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-10-17 10:20:07,612 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-10-17 10:20:07,613 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-10-17 10:20:07,613 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-10-17 10:20:07,614 INFO L138 SettingsManager]: * Use SBE=true [2022-10-17 10:20:07,614 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-10-17 10:20:07,615 INFO L138 SettingsManager]: * sizeof long=4 [2022-10-17 10:20:07,616 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-10-17 10:20:07,616 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-10-17 10:20:07,617 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-10-17 10:20:07,617 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-10-17 10:20:07,617 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-10-17 10:20:07,617 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-10-17 10:20:07,618 INFO L138 SettingsManager]: * sizeof long double=12 [2022-10-17 10:20:07,618 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-10-17 10:20:07,618 INFO L138 SettingsManager]: * Use constant arrays=true [2022-10-17 10:20:07,619 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-10-17 10:20:07,619 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-10-17 10:20:07,619 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-10-17 10:20:07,620 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-10-17 10:20:07,620 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-17 10:20:07,642 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-10-17 10:20:07,644 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-10-17 10:20:07,644 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-10-17 10:20:07,644 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-10-17 10:20:07,645 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-10-17 10:20:07,645 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-10-17 10:20:07,645 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-10-17 10:20:07,646 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-10-17 10:20:07,646 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_a14cfbf9-eab5-47c3-99a8-2ba12008fdb8/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a14cfbf9-eab5-47c3-99a8-2ba12008fdb8/bin/uautomizer-J5u9QxTXDZ Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f69f777f524a62a415fc7cacc9442c44e05883e29c36815b4e0d58199826b331 [2022-10-17 10:20:07,975 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-10-17 10:20:08,005 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-10-17 10:20:08,009 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-10-17 10:20:08,010 INFO L271 PluginConnector]: Initializing CDTParser... [2022-10-17 10:20:08,011 INFO L275 PluginConnector]: CDTParser initialized [2022-10-17 10:20:08,013 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a14cfbf9-eab5-47c3-99a8-2ba12008fdb8/bin/uautomizer-J5u9QxTXDZ/../../sv-benchmarks/c/pthread-wmm/mix046.opt.i [2022-10-17 10:20:08,123 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a14cfbf9-eab5-47c3-99a8-2ba12008fdb8/bin/uautomizer-J5u9QxTXDZ/data/a9547dcba/387aa7c7dfab405ca6b082d0cc420742/FLAGb57e7177c [2022-10-17 10:20:08,823 INFO L306 CDTParser]: Found 1 translation units. [2022-10-17 10:20:08,824 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a14cfbf9-eab5-47c3-99a8-2ba12008fdb8/sv-benchmarks/c/pthread-wmm/mix046.opt.i [2022-10-17 10:20:08,853 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a14cfbf9-eab5-47c3-99a8-2ba12008fdb8/bin/uautomizer-J5u9QxTXDZ/data/a9547dcba/387aa7c7dfab405ca6b082d0cc420742/FLAGb57e7177c [2022-10-17 10:20:09,029 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a14cfbf9-eab5-47c3-99a8-2ba12008fdb8/bin/uautomizer-J5u9QxTXDZ/data/a9547dcba/387aa7c7dfab405ca6b082d0cc420742 [2022-10-17 10:20:09,036 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-10-17 10:20:09,041 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-10-17 10:20:09,043 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-10-17 10:20:09,043 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-10-17 10:20:09,047 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-10-17 10:20:09,048 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.10 10:20:09" (1/1) ... [2022-10-17 10:20:09,051 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1379249e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:20:09, skipping insertion in model container [2022-10-17 10:20:09,051 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.10 10:20:09" (1/1) ... [2022-10-17 10:20:09,060 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-10-17 10:20:09,155 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-10-17 10:20:09,443 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_a14cfbf9-eab5-47c3-99a8-2ba12008fdb8/sv-benchmarks/c/pthread-wmm/mix046.opt.i[944,957] [2022-10-17 10:20:09,794 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-17 10:20:09,804 INFO L203 MainTranslator]: Completed pre-run [2022-10-17 10:20:09,818 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_a14cfbf9-eab5-47c3-99a8-2ba12008fdb8/sv-benchmarks/c/pthread-wmm/mix046.opt.i[944,957] [2022-10-17 10:20:09,877 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-17 10:20:09,942 INFO L208 MainTranslator]: Completed translation [2022-10-17 10:20:09,942 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:20:09 WrapperNode [2022-10-17 10:20:09,943 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-10-17 10:20:09,944 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-10-17 10:20:09,944 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-10-17 10:20:09,944 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-10-17 10:20:09,954 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:20:09" (1/1) ... [2022-10-17 10:20:10,008 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:20:09" (1/1) ... [2022-10-17 10:20:10,068 INFO L138 Inliner]: procedures = 177, calls = 71, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 298 [2022-10-17 10:20:10,070 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-10-17 10:20:10,071 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-10-17 10:20:10,071 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-10-17 10:20:10,072 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-10-17 10:20:10,083 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:20:09" (1/1) ... [2022-10-17 10:20:10,084 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:20:09" (1/1) ... [2022-10-17 10:20:10,101 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:20:09" (1/1) ... [2022-10-17 10:20:10,101 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:20:09" (1/1) ... [2022-10-17 10:20:10,114 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:20:09" (1/1) ... [2022-10-17 10:20:10,134 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:20:09" (1/1) ... [2022-10-17 10:20:10,138 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:20:09" (1/1) ... [2022-10-17 10:20:10,154 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:20:09" (1/1) ... [2022-10-17 10:20:10,159 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-10-17 10:20:10,161 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-10-17 10:20:10,161 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-10-17 10:20:10,161 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-10-17 10:20:10,171 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:20:09" (1/1) ... [2022-10-17 10:20:10,178 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-17 10:20:10,200 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a14cfbf9-eab5-47c3-99a8-2ba12008fdb8/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 10:20:10,217 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a14cfbf9-eab5-47c3-99a8-2ba12008fdb8/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-10-17 10:20:10,236 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a14cfbf9-eab5-47c3-99a8-2ba12008fdb8/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-10-17 10:20:10,275 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-10-17 10:20:10,275 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-10-17 10:20:10,275 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-10-17 10:20:10,276 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-10-17 10:20:10,276 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-10-17 10:20:10,276 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2022-10-17 10:20:10,276 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2022-10-17 10:20:10,276 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2022-10-17 10:20:10,277 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2022-10-17 10:20:10,277 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2022-10-17 10:20:10,277 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2022-10-17 10:20:10,277 INFO L130 BoogieDeclarations]: Found specification of procedure P3 [2022-10-17 10:20:10,278 INFO L138 BoogieDeclarations]: Found implementation of procedure P3 [2022-10-17 10:20:10,278 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-10-17 10:20:10,278 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-10-17 10:20:10,278 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-10-17 10:20:10,278 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-10-17 10:20:10,280 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 10:20:10,517 INFO L235 CfgBuilder]: Building ICFG [2022-10-17 10:20:10,520 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-10-17 10:20:11,406 INFO L276 CfgBuilder]: Performing block encoding [2022-10-17 10:20:12,042 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-10-17 10:20:12,043 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-10-17 10:20:12,046 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.10 10:20:12 BoogieIcfgContainer [2022-10-17 10:20:12,046 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-10-17 10:20:12,050 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-10-17 10:20:12,051 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-10-17 10:20:12,060 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-10-17 10:20:12,060 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.10 10:20:09" (1/3) ... [2022-10-17 10:20:12,062 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1efb119c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.10 10:20:12, skipping insertion in model container [2022-10-17 10:20:12,062 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:20:09" (2/3) ... [2022-10-17 10:20:12,062 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1efb119c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.10 10:20:12, skipping insertion in model container [2022-10-17 10:20:12,062 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.10 10:20:12" (3/3) ... [2022-10-17 10:20:12,068 INFO L112 eAbstractionObserver]: Analyzing ICFG mix046.opt.i [2022-10-17 10:20:12,086 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-10-17 10:20:12,099 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-10-17 10:20:12,099 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-10-17 10:20:12,099 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-10-17 10:20:12,203 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-10-17 10:20:12,277 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 148 places, 137 transitions, 294 flow [2022-10-17 10:20:12,415 INFO L130 PetriNetUnfolder]: 2/133 cut-off events. [2022-10-17 10:20:12,415 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-10-17 10:20:12,422 INFO L83 FinitePrefix]: Finished finitePrefix Result has 146 conditions, 133 events. 2/133 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 70 event pairs, 0 based on Foata normal form. 0/129 useless extension candidates. Maximal degree in co-relation 91. Up to 2 conditions per place. [2022-10-17 10:20:12,423 INFO L82 GeneralOperation]: Start removeDead. Operand has 148 places, 137 transitions, 294 flow [2022-10-17 10:20:12,434 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 144 places, 133 transitions, 278 flow [2022-10-17 10:20:12,457 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-10-17 10:20:12,465 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;@53ead9c5, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-10-17 10:20:12,465 INFO L358 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2022-10-17 10:20:12,492 INFO L130 PetriNetUnfolder]: 0/91 cut-off events. [2022-10-17 10:20:12,492 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-10-17 10:20:12,493 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-10-17 10:20:12,493 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] [2022-10-17 10:20:12,494 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting P3Err0ASSERT_VIOLATIONERROR_FUNCTION === [P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-10-17 10:20:12,500 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:20:12,501 INFO L85 PathProgramCache]: Analyzing trace with hash 1364924999, now seen corresponding path program 1 times [2022-10-17 10:20:12,513 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:20:12,514 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1051344472] [2022-10-17 10:20:12,514 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:20:12,519 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:20:12,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:20:13,564 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 10:20:13,566 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:20:13,566 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1051344472] [2022-10-17 10:20:13,567 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1051344472] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:20:13,567 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:20:13,568 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-10-17 10:20:13,570 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1145154498] [2022-10-17 10:20:13,570 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:20:13,581 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-10-17 10:20:13,582 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:20:13,625 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-10-17 10:20:13,631 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-17 10:20:13,637 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 123 out of 137 [2022-10-17 10:20:13,646 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 144 places, 133 transitions, 278 flow. Second operand has 3 states, 3 states have (on average 125.0) internal successors, (375), 3 states have internal predecessors, (375), 0 states have call successors, (0), 0 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 10:20:13,646 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-10-17 10:20:13,647 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 123 of 137 [2022-10-17 10:20:13,648 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-10-17 10:20:13,917 INFO L130 PetriNetUnfolder]: 17/277 cut-off events. [2022-10-17 10:20:13,917 INFO L131 PetriNetUnfolder]: For 5/5 co-relation queries the response was YES. [2022-10-17 10:20:13,923 INFO L83 FinitePrefix]: Finished finitePrefix Result has 333 conditions, 277 events. 17/277 cut-off events. For 5/5 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 829 event pairs, 7 based on Foata normal form. 9/275 useless extension candidates. Maximal degree in co-relation 275. Up to 27 conditions per place. [2022-10-17 10:20:13,928 INFO L137 encePairwiseOnDemand]: 132/137 looper letters, 11 selfloop transitions, 2 changer transitions 0/132 dead transitions. [2022-10-17 10:20:13,928 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 144 places, 132 transitions, 302 flow [2022-10-17 10:20:13,930 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-10-17 10:20:13,933 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-10-17 10:20:13,950 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 387 transitions. [2022-10-17 10:20:13,957 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.9416058394160584 [2022-10-17 10:20:13,958 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 387 transitions. [2022-10-17 10:20:13,959 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 387 transitions. [2022-10-17 10:20:13,966 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-10-17 10:20:13,970 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 387 transitions. [2022-10-17 10:20:13,977 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 129.0) internal successors, (387), 3 states have internal predecessors, (387), 0 states have call successors, (0), 0 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 10:20:13,991 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 137.0) internal successors, (548), 4 states have internal predecessors, (548), 0 states have call successors, (0), 0 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 10:20:13,992 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 137.0) internal successors, (548), 4 states have internal predecessors, (548), 0 states have call successors, (0), 0 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 10:20:13,995 INFO L175 Difference]: Start difference. First operand has 144 places, 133 transitions, 278 flow. Second operand 3 states and 387 transitions. [2022-10-17 10:20:13,996 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 144 places, 132 transitions, 302 flow [2022-10-17 10:20:14,011 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 140 places, 132 transitions, 298 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-10-17 10:20:14,018 INFO L231 Difference]: Finished difference. Result has 140 places, 129 transitions, 270 flow [2022-10-17 10:20:14,021 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=137, PETRI_DIFFERENCE_MINUEND_FLOW=266, PETRI_DIFFERENCE_MINUEND_PLACES=138, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=129, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=127, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=270, PETRI_PLACES=140, PETRI_TRANSITIONS=129} [2022-10-17 10:20:14,026 INFO L287 CegarLoopForPetriNet]: 144 programPoint places, -4 predicate places. [2022-10-17 10:20:14,027 INFO L495 AbstractCegarLoop]: Abstraction has has 140 places, 129 transitions, 270 flow [2022-10-17 10:20:14,028 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 125.0) internal successors, (375), 3 states have internal predecessors, (375), 0 states have call successors, (0), 0 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 10:20:14,028 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-10-17 10:20:14,029 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] [2022-10-17 10:20:14,029 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-10-17 10:20:14,030 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-10-17 10:20:14,030 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:20:14,031 INFO L85 PathProgramCache]: Analyzing trace with hash -836884992, now seen corresponding path program 1 times [2022-10-17 10:20:14,031 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:20:14,031 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [31251566] [2022-10-17 10:20:14,032 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:20:14,032 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:20:14,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:20:14,729 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 10:20:14,729 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:20:14,730 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [31251566] [2022-10-17 10:20:14,730 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [31251566] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:20:14,730 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:20:14,731 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-10-17 10:20:14,731 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [822057184] [2022-10-17 10:20:14,731 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:20:14,733 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-10-17 10:20:14,733 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:20:14,734 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-10-17 10:20:14,734 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-10-17 10:20:14,736 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 115 out of 137 [2022-10-17 10:20:14,738 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 140 places, 129 transitions, 270 flow. Second operand has 6 states, 6 states have (on average 117.0) internal successors, (702), 6 states have internal predecessors, (702), 0 states have call successors, (0), 0 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 10:20:14,738 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-10-17 10:20:14,738 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 115 of 137 [2022-10-17 10:20:14,739 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-10-17 10:20:15,415 INFO L130 PetriNetUnfolder]: 357/1260 cut-off events. [2022-10-17 10:20:15,415 INFO L131 PetriNetUnfolder]: For 72/72 co-relation queries the response was YES. [2022-10-17 10:20:15,424 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1940 conditions, 1260 events. 357/1260 cut-off events. For 72/72 co-relation queries the response was YES. Maximal size of possible extension queue 82. Compared 8866 event pairs, 59 based on Foata normal form. 0/1225 useless extension candidates. Maximal degree in co-relation 1883. Up to 333 conditions per place. [2022-10-17 10:20:15,431 INFO L137 encePairwiseOnDemand]: 130/137 looper letters, 21 selfloop transitions, 3 changer transitions 50/172 dead transitions. [2022-10-17 10:20:15,431 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 148 places, 172 transitions, 496 flow [2022-10-17 10:20:15,432 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-10-17 10:20:15,432 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-10-17 10:20:15,437 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1098 transitions. [2022-10-17 10:20:15,438 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8905109489051095 [2022-10-17 10:20:15,439 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1098 transitions. [2022-10-17 10:20:15,439 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1098 transitions. [2022-10-17 10:20:15,440 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-10-17 10:20:15,440 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1098 transitions. [2022-10-17 10:20:15,445 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 122.0) internal successors, (1098), 9 states have internal predecessors, (1098), 0 states have call successors, (0), 0 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 10:20:15,450 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 137.0) internal successors, (1370), 10 states have internal predecessors, (1370), 0 states have call successors, (0), 0 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 10:20:15,452 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 137.0) internal successors, (1370), 10 states have internal predecessors, (1370), 0 states have call successors, (0), 0 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 10:20:15,452 INFO L175 Difference]: Start difference. First operand has 140 places, 129 transitions, 270 flow. Second operand 9 states and 1098 transitions. [2022-10-17 10:20:15,453 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 148 places, 172 transitions, 496 flow [2022-10-17 10:20:15,457 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 146 places, 172 transitions, 478 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-10-17 10:20:15,462 INFO L231 Difference]: Finished difference. Result has 153 places, 117 transitions, 281 flow [2022-10-17 10:20:15,462 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=137, PETRI_DIFFERENCE_MINUEND_FLOW=266, PETRI_DIFFERENCE_MINUEND_PLACES=138, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=129, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=126, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=281, PETRI_PLACES=153, PETRI_TRANSITIONS=117} [2022-10-17 10:20:15,463 INFO L287 CegarLoopForPetriNet]: 144 programPoint places, 9 predicate places. [2022-10-17 10:20:15,464 INFO L495 AbstractCegarLoop]: Abstraction has has 153 places, 117 transitions, 281 flow [2022-10-17 10:20:15,465 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 117.0) internal successors, (702), 6 states have internal predecessors, (702), 0 states have call successors, (0), 0 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 10:20:15,465 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-10-17 10:20:15,465 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] [2022-10-17 10:20:15,465 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-10-17 10:20:15,466 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-10-17 10:20:15,466 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:20:15,466 INFO L85 PathProgramCache]: Analyzing trace with hash -283519073, now seen corresponding path program 1 times [2022-10-17 10:20:15,467 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:20:15,467 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1814833966] [2022-10-17 10:20:15,467 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:20:15,468 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:20:15,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:20:16,080 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 10:20:16,082 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:20:16,082 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1814833966] [2022-10-17 10:20:16,083 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1814833966] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:20:16,083 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:20:16,084 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-10-17 10:20:16,085 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1964882899] [2022-10-17 10:20:16,085 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:20:16,087 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-10-17 10:20:16,087 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:20:16,088 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-10-17 10:20:16,089 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-10-17 10:20:16,090 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 116 out of 137 [2022-10-17 10:20:16,092 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 153 places, 117 transitions, 281 flow. Second operand has 6 states, 6 states have (on average 118.0) internal successors, (708), 6 states have internal predecessors, (708), 0 states have call successors, (0), 0 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 10:20:16,092 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-10-17 10:20:16,093 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 116 of 137 [2022-10-17 10:20:16,093 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-10-17 10:20:16,582 INFO L130 PetriNetUnfolder]: 192/589 cut-off events. [2022-10-17 10:20:16,583 INFO L131 PetriNetUnfolder]: For 485/489 co-relation queries the response was YES. [2022-10-17 10:20:16,588 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1260 conditions, 589 events. 192/589 cut-off events. For 485/489 co-relation queries the response was YES. Maximal size of possible extension queue 44. Compared 3104 event pairs, 49 based on Foata normal form. 20/576 useless extension candidates. Maximal degree in co-relation 1196. Up to 116 conditions per place. [2022-10-17 10:20:16,594 INFO L137 encePairwiseOnDemand]: 131/137 looper letters, 16 selfloop transitions, 2 changer transitions 22/141 dead transitions. [2022-10-17 10:20:16,595 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 141 places, 141 transitions, 427 flow [2022-10-17 10:20:16,596 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-10-17 10:20:16,596 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-10-17 10:20:16,600 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1086 transitions. [2022-10-17 10:20:16,603 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8807785888077859 [2022-10-17 10:20:16,603 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1086 transitions. [2022-10-17 10:20:16,603 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1086 transitions. [2022-10-17 10:20:16,605 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-10-17 10:20:16,605 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1086 transitions. [2022-10-17 10:20:16,609 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 120.66666666666667) internal successors, (1086), 9 states have internal predecessors, (1086), 0 states have call successors, (0), 0 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 10:20:16,614 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 137.0) internal successors, (1370), 10 states have internal predecessors, (1370), 0 states have call successors, (0), 0 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 10:20:16,616 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 137.0) internal successors, (1370), 10 states have internal predecessors, (1370), 0 states have call successors, (0), 0 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 10:20:16,616 INFO L175 Difference]: Start difference. First operand has 153 places, 117 transitions, 281 flow. Second operand 9 states and 1086 transitions. [2022-10-17 10:20:16,616 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 141 places, 141 transitions, 427 flow [2022-10-17 10:20:16,624 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 137 places, 141 transitions, 410 flow, removed 7 selfloop flow, removed 4 redundant places. [2022-10-17 10:20:16,629 INFO L231 Difference]: Finished difference. Result has 144 places, 117 transitions, 292 flow [2022-10-17 10:20:16,629 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=137, PETRI_DIFFERENCE_MINUEND_FLOW=272, PETRI_DIFFERENCE_MINUEND_PLACES=129, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=117, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=115, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=292, PETRI_PLACES=144, PETRI_TRANSITIONS=117} [2022-10-17 10:20:16,632 INFO L287 CegarLoopForPetriNet]: 144 programPoint places, 0 predicate places. [2022-10-17 10:20:16,633 INFO L495 AbstractCegarLoop]: Abstraction has has 144 places, 117 transitions, 292 flow [2022-10-17 10:20:16,634 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 118.0) internal successors, (708), 6 states have internal predecessors, (708), 0 states have call successors, (0), 0 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 10:20:16,634 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-10-17 10:20:16,635 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] [2022-10-17 10:20:16,635 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-10-17 10:20:16,635 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-10-17 10:20:16,636 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:20:16,637 INFO L85 PathProgramCache]: Analyzing trace with hash -1591499036, now seen corresponding path program 1 times [2022-10-17 10:20:16,637 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:20:16,637 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [453133315] [2022-10-17 10:20:16,637 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:20:16,638 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:20:16,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:20:18,118 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 10:20:18,119 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:20:18,119 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [453133315] [2022-10-17 10:20:18,120 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [453133315] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:20:18,120 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:20:18,120 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-10-17 10:20:18,121 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [191803548] [2022-10-17 10:20:18,121 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:20:18,124 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-10-17 10:20:18,128 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:20:18,129 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-10-17 10:20:18,130 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2022-10-17 10:20:18,132 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 114 out of 137 [2022-10-17 10:20:18,135 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 144 places, 117 transitions, 292 flow. Second operand has 9 states, 9 states have (on average 115.66666666666667) internal successors, (1041), 9 states have internal predecessors, (1041), 0 states have call successors, (0), 0 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 10:20:18,135 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-10-17 10:20:18,136 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 114 of 137 [2022-10-17 10:20:18,136 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-10-17 10:20:18,623 INFO L130 PetriNetUnfolder]: 171/529 cut-off events. [2022-10-17 10:20:18,623 INFO L131 PetriNetUnfolder]: For 616/619 co-relation queries the response was YES. [2022-10-17 10:20:18,629 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1224 conditions, 529 events. 171/529 cut-off events. For 616/619 co-relation queries the response was YES. Maximal size of possible extension queue 44. Compared 2659 event pairs, 56 based on Foata normal form. 14/514 useless extension candidates. Maximal degree in co-relation 1153. Up to 169 conditions per place. [2022-10-17 10:20:18,634 INFO L137 encePairwiseOnDemand]: 128/137 looper letters, 18 selfloop transitions, 5 changer transitions 22/144 dead transitions. [2022-10-17 10:20:18,634 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 148 places, 144 transitions, 466 flow [2022-10-17 10:20:18,635 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-10-17 10:20:18,635 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2022-10-17 10:20:18,639 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 1301 transitions. [2022-10-17 10:20:18,641 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8633045786330458 [2022-10-17 10:20:18,641 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 1301 transitions. [2022-10-17 10:20:18,641 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 1301 transitions. [2022-10-17 10:20:18,645 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-10-17 10:20:18,646 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 1301 transitions. [2022-10-17 10:20:18,651 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 118.27272727272727) internal successors, (1301), 11 states have internal predecessors, (1301), 0 states have call successors, (0), 0 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 10:20:18,659 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 137.0) internal successors, (1644), 12 states have internal predecessors, (1644), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:20:18,660 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 137.0) internal successors, (1644), 12 states have internal predecessors, (1644), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:20:18,661 INFO L175 Difference]: Start difference. First operand has 144 places, 117 transitions, 292 flow. Second operand 11 states and 1301 transitions. [2022-10-17 10:20:18,661 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 148 places, 144 transitions, 466 flow [2022-10-17 10:20:18,669 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 140 places, 144 transitions, 434 flow, removed 14 selfloop flow, removed 8 redundant places. [2022-10-17 10:20:18,675 INFO L231 Difference]: Finished difference. Result has 147 places, 119 transitions, 323 flow [2022-10-17 10:20:18,683 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=137, PETRI_DIFFERENCE_MINUEND_FLOW=276, PETRI_DIFFERENCE_MINUEND_PLACES=130, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=117, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=112, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=323, PETRI_PLACES=147, PETRI_TRANSITIONS=119} [2022-10-17 10:20:18,685 INFO L287 CegarLoopForPetriNet]: 144 programPoint places, 3 predicate places. [2022-10-17 10:20:18,685 INFO L495 AbstractCegarLoop]: Abstraction has has 147 places, 119 transitions, 323 flow [2022-10-17 10:20:18,686 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 115.66666666666667) internal successors, (1041), 9 states have internal predecessors, (1041), 0 states have call successors, (0), 0 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 10:20:18,687 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-10-17 10:20:18,687 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 10:20:18,687 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-10-17 10:20:18,688 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-10-17 10:20:18,688 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:20:18,688 INFO L85 PathProgramCache]: Analyzing trace with hash 269638246, now seen corresponding path program 1 times [2022-10-17 10:20:18,688 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:20:18,690 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1755486735] [2022-10-17 10:20:18,690 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:20:18,690 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:20:18,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:20:19,758 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 10:20:19,759 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:20:19,759 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1755486735] [2022-10-17 10:20:19,759 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1755486735] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:20:19,760 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:20:19,760 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-10-17 10:20:19,760 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [708238547] [2022-10-17 10:20:19,760 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:20:19,761 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-10-17 10:20:19,762 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:20:19,762 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-10-17 10:20:19,763 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2022-10-17 10:20:19,765 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 113 out of 137 [2022-10-17 10:20:19,767 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 147 places, 119 transitions, 323 flow. Second operand has 10 states, 10 states have (on average 114.7) internal successors, (1147), 10 states have internal predecessors, (1147), 0 states have call successors, (0), 0 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 10:20:19,767 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-10-17 10:20:19,768 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 113 of 137 [2022-10-17 10:20:19,768 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-10-17 10:20:20,434 INFO L130 PetriNetUnfolder]: 160/517 cut-off events. [2022-10-17 10:20:20,434 INFO L131 PetriNetUnfolder]: For 997/1000 co-relation queries the response was YES. [2022-10-17 10:20:20,441 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1452 conditions, 517 events. 160/517 cut-off events. For 997/1000 co-relation queries the response was YES. Maximal size of possible extension queue 36. Compared 2531 event pairs, 30 based on Foata normal form. 8/504 useless extension candidates. Maximal degree in co-relation 1377. Up to 150 conditions per place. [2022-10-17 10:20:20,447 INFO L137 encePairwiseOnDemand]: 125/137 looper letters, 22 selfloop transitions, 13 changer transitions 10/143 dead transitions. [2022-10-17 10:20:20,447 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 151 places, 143 transitions, 534 flow [2022-10-17 10:20:20,447 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-10-17 10:20:20,448 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2022-10-17 10:20:20,452 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 1287 transitions. [2022-10-17 10:20:20,454 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8540145985401459 [2022-10-17 10:20:20,454 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 1287 transitions. [2022-10-17 10:20:20,454 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 1287 transitions. [2022-10-17 10:20:20,456 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-10-17 10:20:20,456 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 1287 transitions. [2022-10-17 10:20:20,461 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 117.0) internal successors, (1287), 11 states have internal predecessors, (1287), 0 states have call successors, (0), 0 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 10:20:20,467 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 137.0) internal successors, (1644), 12 states have internal predecessors, (1644), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:20:20,468 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 137.0) internal successors, (1644), 12 states have internal predecessors, (1644), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:20:20,468 INFO L175 Difference]: Start difference. First operand has 147 places, 119 transitions, 323 flow. Second operand 11 states and 1287 transitions. [2022-10-17 10:20:20,469 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 151 places, 143 transitions, 534 flow [2022-10-17 10:20:20,475 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 145 places, 143 transitions, 510 flow, removed 8 selfloop flow, removed 6 redundant places. [2022-10-17 10:20:20,479 INFO L231 Difference]: Finished difference. Result has 150 places, 126 transitions, 388 flow [2022-10-17 10:20:20,480 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=137, PETRI_DIFFERENCE_MINUEND_FLOW=310, PETRI_DIFFERENCE_MINUEND_PLACES=135, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=119, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=110, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=388, PETRI_PLACES=150, PETRI_TRANSITIONS=126} [2022-10-17 10:20:20,483 INFO L287 CegarLoopForPetriNet]: 144 programPoint places, 6 predicate places. [2022-10-17 10:20:20,483 INFO L495 AbstractCegarLoop]: Abstraction has has 150 places, 126 transitions, 388 flow [2022-10-17 10:20:20,484 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 114.7) internal successors, (1147), 10 states have internal predecessors, (1147), 0 states have call successors, (0), 0 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 10:20:20,485 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-10-17 10:20:20,485 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 10:20:20,485 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-10-17 10:20:20,486 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-10-17 10:20:20,487 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:20:20,487 INFO L85 PathProgramCache]: Analyzing trace with hash -743414182, now seen corresponding path program 2 times [2022-10-17 10:20:20,488 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:20:20,488 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1540441442] [2022-10-17 10:20:20,488 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:20:20,489 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:20:20,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:20:21,928 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 10:20:21,929 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:20:21,929 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1540441442] [2022-10-17 10:20:21,930 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1540441442] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:20:21,930 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:20:21,930 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-10-17 10:20:21,930 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1697794157] [2022-10-17 10:20:21,931 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:20:21,931 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-10-17 10:20:21,932 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:20:21,933 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-10-17 10:20:21,934 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2022-10-17 10:20:21,937 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 113 out of 137 [2022-10-17 10:20:21,948 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 150 places, 126 transitions, 388 flow. Second operand has 11 states, 11 states have (on average 114.54545454545455) internal successors, (1260), 11 states have internal predecessors, (1260), 0 states have call successors, (0), 0 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 10:20:21,949 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-10-17 10:20:21,949 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 113 of 137 [2022-10-17 10:20:21,949 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-10-17 10:20:22,680 INFO L130 PetriNetUnfolder]: 145/495 cut-off events. [2022-10-17 10:20:22,681 INFO L131 PetriNetUnfolder]: For 1336/1403 co-relation queries the response was YES. [2022-10-17 10:20:22,688 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1609 conditions, 495 events. 145/495 cut-off events. For 1336/1403 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 2292 event pairs, 17 based on Foata normal form. 33/509 useless extension candidates. Maximal degree in co-relation 1531. Up to 127 conditions per place. [2022-10-17 10:20:22,693 INFO L137 encePairwiseOnDemand]: 126/137 looper letters, 23 selfloop transitions, 15 changer transitions 19/155 dead transitions. [2022-10-17 10:20:22,693 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 159 places, 155 transitions, 720 flow [2022-10-17 10:20:22,694 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-10-17 10:20:22,694 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2022-10-17 10:20:22,699 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1522 transitions. [2022-10-17 10:20:22,700 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8545760808534532 [2022-10-17 10:20:22,701 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 1522 transitions. [2022-10-17 10:20:22,701 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 1522 transitions. [2022-10-17 10:20:22,703 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-10-17 10:20:22,703 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 1522 transitions. [2022-10-17 10:20:22,708 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 117.07692307692308) internal successors, (1522), 13 states have internal predecessors, (1522), 0 states have call successors, (0), 0 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 10:20:22,716 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 137.0) internal successors, (1918), 14 states have internal predecessors, (1918), 0 states have call successors, (0), 0 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 10:20:22,717 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 137.0) internal successors, (1918), 14 states have internal predecessors, (1918), 0 states have call successors, (0), 0 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 10:20:22,718 INFO L175 Difference]: Start difference. First operand has 150 places, 126 transitions, 388 flow. Second operand 13 states and 1522 transitions. [2022-10-17 10:20:22,718 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 159 places, 155 transitions, 720 flow [2022-10-17 10:20:22,727 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 153 places, 155 transitions, 693 flow, removed 11 selfloop flow, removed 6 redundant places. [2022-10-17 10:20:22,731 INFO L231 Difference]: Finished difference. Result has 160 places, 130 transitions, 465 flow [2022-10-17 10:20:22,732 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=137, PETRI_DIFFERENCE_MINUEND_FLOW=375, PETRI_DIFFERENCE_MINUEND_PLACES=141, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=126, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=113, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=465, PETRI_PLACES=160, PETRI_TRANSITIONS=130} [2022-10-17 10:20:22,735 INFO L287 CegarLoopForPetriNet]: 144 programPoint places, 16 predicate places. [2022-10-17 10:20:22,735 INFO L495 AbstractCegarLoop]: Abstraction has has 160 places, 130 transitions, 465 flow [2022-10-17 10:20:22,736 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 114.54545454545455) internal successors, (1260), 11 states have internal predecessors, (1260), 0 states have call successors, (0), 0 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 10:20:22,737 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-10-17 10:20:22,737 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] [2022-10-17 10:20:22,737 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-10-17 10:20:22,738 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-10-17 10:20:22,738 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:20:22,739 INFO L85 PathProgramCache]: Analyzing trace with hash -626170543, now seen corresponding path program 1 times [2022-10-17 10:20:22,739 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:20:22,739 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1775270522] [2022-10-17 10:20:22,739 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:20:22,740 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:20:22,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:20:24,537 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 10:20:24,537 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:20:24,537 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1775270522] [2022-10-17 10:20:24,538 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1775270522] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:20:24,538 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:20:24,538 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-10-17 10:20:24,544 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2081854950] [2022-10-17 10:20:24,545 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:20:24,547 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-10-17 10:20:24,547 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:20:24,548 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-10-17 10:20:24,549 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2022-10-17 10:20:24,551 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 112 out of 137 [2022-10-17 10:20:24,554 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 160 places, 130 transitions, 465 flow. Second operand has 12 states, 12 states have (on average 113.58333333333333) internal successors, (1363), 12 states have internal predecessors, (1363), 0 states have call successors, (0), 0 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 10:20:24,554 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-10-17 10:20:24,554 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 112 of 137 [2022-10-17 10:20:24,555 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-10-17 10:20:25,173 INFO L130 PetriNetUnfolder]: 120/461 cut-off events. [2022-10-17 10:20:25,175 INFO L131 PetriNetUnfolder]: For 2406/2661 co-relation queries the response was YES. [2022-10-17 10:20:25,182 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1762 conditions, 461 events. 120/461 cut-off events. For 2406/2661 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 2179 event pairs, 14 based on Foata normal form. 32/471 useless extension candidates. Maximal degree in co-relation 1678. Up to 138 conditions per place. [2022-10-17 10:20:25,189 INFO L137 encePairwiseOnDemand]: 125/137 looper letters, 28 selfloop transitions, 20 changer transitions 10/155 dead transitions. [2022-10-17 10:20:25,189 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 167 places, 155 transitions, 828 flow [2022-10-17 10:20:25,190 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-10-17 10:20:25,190 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2022-10-17 10:20:25,195 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 1617 transitions. [2022-10-17 10:20:25,197 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.843065693430657 [2022-10-17 10:20:25,198 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 1617 transitions. [2022-10-17 10:20:25,198 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 1617 transitions. [2022-10-17 10:20:25,200 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-10-17 10:20:25,200 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 1617 transitions. [2022-10-17 10:20:25,206 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 115.5) internal successors, (1617), 14 states have internal predecessors, (1617), 0 states have call successors, (0), 0 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 10:20:25,213 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 137.0) internal successors, (2055), 15 states have internal predecessors, (2055), 0 states have call successors, (0), 0 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 10:20:25,215 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 137.0) internal successors, (2055), 15 states have internal predecessors, (2055), 0 states have call successors, (0), 0 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 10:20:25,215 INFO L175 Difference]: Start difference. First operand has 160 places, 130 transitions, 465 flow. Second operand 14 states and 1617 transitions. [2022-10-17 10:20:25,215 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 167 places, 155 transitions, 828 flow [2022-10-17 10:20:25,228 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 159 places, 155 transitions, 745 flow, removed 40 selfloop flow, removed 8 redundant places. [2022-10-17 10:20:25,233 INFO L231 Difference]: Finished difference. Result has 168 places, 138 transitions, 598 flow [2022-10-17 10:20:25,233 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=137, PETRI_DIFFERENCE_MINUEND_FLOW=438, PETRI_DIFFERENCE_MINUEND_PLACES=146, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=130, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=113, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=598, PETRI_PLACES=168, PETRI_TRANSITIONS=138} [2022-10-17 10:20:25,234 INFO L287 CegarLoopForPetriNet]: 144 programPoint places, 24 predicate places. [2022-10-17 10:20:25,235 INFO L495 AbstractCegarLoop]: Abstraction has has 168 places, 138 transitions, 598 flow [2022-10-17 10:20:25,236 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 113.58333333333333) internal successors, (1363), 12 states have internal predecessors, (1363), 0 states have call successors, (0), 0 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 10:20:25,236 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-10-17 10:20:25,236 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] [2022-10-17 10:20:25,236 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-10-17 10:20:25,237 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-10-17 10:20:25,237 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:20:25,238 INFO L85 PathProgramCache]: Analyzing trace with hash -1980634309, now seen corresponding path program 2 times [2022-10-17 10:20:25,238 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:20:25,238 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1179989230] [2022-10-17 10:20:25,238 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:20:25,239 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:20:25,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:20:26,823 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 10:20:26,828 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:20:26,828 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1179989230] [2022-10-17 10:20:26,829 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1179989230] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:20:26,829 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:20:26,829 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-10-17 10:20:26,829 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1429769955] [2022-10-17 10:20:26,830 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:20:26,830 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-10-17 10:20:26,830 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:20:26,831 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-10-17 10:20:26,831 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=116, Unknown=0, NotChecked=0, Total=156 [2022-10-17 10:20:26,834 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 111 out of 137 [2022-10-17 10:20:26,836 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 168 places, 138 transitions, 598 flow. Second operand has 13 states, 13 states have (on average 112.53846153846153) internal successors, (1463), 13 states have internal predecessors, (1463), 0 states have call successors, (0), 0 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 10:20:26,836 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-10-17 10:20:26,837 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 111 of 137 [2022-10-17 10:20:26,837 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-10-17 10:20:27,536 INFO L130 PetriNetUnfolder]: 124/541 cut-off events. [2022-10-17 10:20:27,537 INFO L131 PetriNetUnfolder]: For 3377/3941 co-relation queries the response was YES. [2022-10-17 10:20:27,545 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2182 conditions, 541 events. 124/541 cut-off events. For 3377/3941 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 2841 event pairs, 4 based on Foata normal form. 39/557 useless extension candidates. Maximal degree in co-relation 2092. Up to 129 conditions per place. [2022-10-17 10:20:27,553 INFO L137 encePairwiseOnDemand]: 125/137 looper letters, 34 selfloop transitions, 22 changer transitions 10/162 dead transitions. [2022-10-17 10:20:27,553 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 176 places, 162 transitions, 1004 flow [2022-10-17 10:20:27,554 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-10-17 10:20:27,554 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2022-10-17 10:20:27,559 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 1715 transitions. [2022-10-17 10:20:27,561 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8345498783454988 [2022-10-17 10:20:27,561 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 1715 transitions. [2022-10-17 10:20:27,562 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 1715 transitions. [2022-10-17 10:20:27,563 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-10-17 10:20:27,564 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 1715 transitions. [2022-10-17 10:20:27,570 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 114.33333333333333) internal successors, (1715), 15 states have internal predecessors, (1715), 0 states have call successors, (0), 0 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 10:20:27,576 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 137.0) internal successors, (2192), 16 states have internal predecessors, (2192), 0 states have call successors, (0), 0 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 10:20:27,578 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 137.0) internal successors, (2192), 16 states have internal predecessors, (2192), 0 states have call successors, (0), 0 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 10:20:27,578 INFO L175 Difference]: Start difference. First operand has 168 places, 138 transitions, 598 flow. Second operand 15 states and 1715 transitions. [2022-10-17 10:20:27,578 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 176 places, 162 transitions, 1004 flow [2022-10-17 10:20:27,592 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 168 places, 162 transitions, 903 flow, removed 49 selfloop flow, removed 8 redundant places. [2022-10-17 10:20:27,597 INFO L231 Difference]: Finished difference. Result has 176 places, 144 transitions, 714 flow [2022-10-17 10:20:27,597 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=137, PETRI_DIFFERENCE_MINUEND_FLOW=555, PETRI_DIFFERENCE_MINUEND_PLACES=154, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=138, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=118, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=714, PETRI_PLACES=176, PETRI_TRANSITIONS=144} [2022-10-17 10:20:27,600 INFO L287 CegarLoopForPetriNet]: 144 programPoint places, 32 predicate places. [2022-10-17 10:20:27,600 INFO L495 AbstractCegarLoop]: Abstraction has has 176 places, 144 transitions, 714 flow [2022-10-17 10:20:27,602 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 112.53846153846153) internal successors, (1463), 13 states have internal predecessors, (1463), 0 states have call successors, (0), 0 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 10:20:27,602 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-10-17 10:20:27,602 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] [2022-10-17 10:20:27,603 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-10-17 10:20:27,603 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-10-17 10:20:27,604 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:20:27,604 INFO L85 PathProgramCache]: Analyzing trace with hash 1692383547, now seen corresponding path program 3 times [2022-10-17 10:20:27,604 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:20:27,604 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1926573915] [2022-10-17 10:20:27,605 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:20:27,605 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:20:27,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:20:29,181 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 10:20:29,182 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:20:29,182 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1926573915] [2022-10-17 10:20:29,182 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1926573915] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:20:29,183 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:20:29,183 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-10-17 10:20:29,183 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [247171817] [2022-10-17 10:20:29,183 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:20:29,184 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-10-17 10:20:29,184 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:20:29,185 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-10-17 10:20:29,185 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2022-10-17 10:20:29,187 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 110 out of 137 [2022-10-17 10:20:29,189 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 176 places, 144 transitions, 714 flow. Second operand has 11 states, 11 states have (on average 111.9090909090909) internal successors, (1231), 11 states have internal predecessors, (1231), 0 states have call successors, (0), 0 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 10:20:29,190 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-10-17 10:20:29,190 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 110 of 137 [2022-10-17 10:20:29,190 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-10-17 10:20:29,804 INFO L130 PetriNetUnfolder]: 111/526 cut-off events. [2022-10-17 10:20:29,804 INFO L131 PetriNetUnfolder]: For 3207/3800 co-relation queries the response was YES. [2022-10-17 10:20:29,813 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2114 conditions, 526 events. 111/526 cut-off events. For 3207/3800 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 2858 event pairs, 8 based on Foata normal form. 39/540 useless extension candidates. Maximal degree in co-relation 2018. Up to 117 conditions per place. [2022-10-17 10:20:29,820 INFO L137 encePairwiseOnDemand]: 127/137 looper letters, 40 selfloop transitions, 14 changer transitions 11/160 dead transitions. [2022-10-17 10:20:29,820 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 182 places, 160 transitions, 1011 flow [2022-10-17 10:20:29,820 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-10-17 10:20:29,821 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2022-10-17 10:20:29,825 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1474 transitions. [2022-10-17 10:20:29,827 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8276249298147108 [2022-10-17 10:20:29,827 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 1474 transitions. [2022-10-17 10:20:29,827 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 1474 transitions. [2022-10-17 10:20:29,829 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-10-17 10:20:29,829 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 1474 transitions. [2022-10-17 10:20:29,835 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 113.38461538461539) internal successors, (1474), 13 states have internal predecessors, (1474), 0 states have call successors, (0), 0 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 10:20:29,841 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 137.0) internal successors, (1918), 14 states have internal predecessors, (1918), 0 states have call successors, (0), 0 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 10:20:29,842 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 137.0) internal successors, (1918), 14 states have internal predecessors, (1918), 0 states have call successors, (0), 0 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 10:20:29,843 INFO L175 Difference]: Start difference. First operand has 176 places, 144 transitions, 714 flow. Second operand 13 states and 1474 transitions. [2022-10-17 10:20:29,843 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 182 places, 160 transitions, 1011 flow [2022-10-17 10:20:29,866 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 173 places, 160 transitions, 926 flow, removed 40 selfloop flow, removed 9 redundant places. [2022-10-17 10:20:29,870 INFO L231 Difference]: Finished difference. Result has 180 places, 143 transitions, 698 flow [2022-10-17 10:20:29,871 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=137, PETRI_DIFFERENCE_MINUEND_FLOW=663, PETRI_DIFFERENCE_MINUEND_PLACES=161, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=144, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=130, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=698, PETRI_PLACES=180, PETRI_TRANSITIONS=143} [2022-10-17 10:20:29,872 INFO L287 CegarLoopForPetriNet]: 144 programPoint places, 36 predicate places. [2022-10-17 10:20:29,872 INFO L495 AbstractCegarLoop]: Abstraction has has 180 places, 143 transitions, 698 flow [2022-10-17 10:20:29,874 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 111.9090909090909) internal successors, (1231), 11 states have internal predecessors, (1231), 0 states have call successors, (0), 0 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 10:20:29,874 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-10-17 10:20:29,874 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] [2022-10-17 10:20:29,874 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-10-17 10:20:29,875 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-10-17 10:20:29,875 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:20:29,875 INFO L85 PathProgramCache]: Analyzing trace with hash -2059157509, now seen corresponding path program 1 times [2022-10-17 10:20:29,876 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:20:29,876 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1023239941] [2022-10-17 10:20:29,876 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:20:29,876 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:20:29,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:20:30,229 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 10:20:30,229 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:20:30,230 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1023239941] [2022-10-17 10:20:30,230 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1023239941] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:20:30,230 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:20:30,230 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-10-17 10:20:30,231 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [903742342] [2022-10-17 10:20:30,231 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:20:30,232 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-10-17 10:20:30,233 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:20:30,234 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-10-17 10:20:30,234 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-10-17 10:20:30,236 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 112 out of 137 [2022-10-17 10:20:30,237 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 180 places, 143 transitions, 698 flow. Second operand has 6 states, 6 states have (on average 114.5) internal successors, (687), 6 states have internal predecessors, (687), 0 states have call successors, (0), 0 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 10:20:30,237 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-10-17 10:20:30,237 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 112 of 137 [2022-10-17 10:20:30,237 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-10-17 10:20:32,603 INFO L130 PetriNetUnfolder]: 3613/6748 cut-off events. [2022-10-17 10:20:32,603 INFO L131 PetriNetUnfolder]: For 28487/29745 co-relation queries the response was YES. [2022-10-17 10:20:32,698 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23072 conditions, 6748 events. 3613/6748 cut-off events. For 28487/29745 co-relation queries the response was YES. Maximal size of possible extension queue 523. Compared 54358 event pairs, 282 based on Foata normal form. 558/7023 useless extension candidates. Maximal degree in co-relation 22980. Up to 2458 conditions per place. [2022-10-17 10:20:32,765 INFO L137 encePairwiseOnDemand]: 126/137 looper letters, 153 selfloop transitions, 18 changer transitions 5/274 dead transitions. [2022-10-17 10:20:32,765 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 183 places, 274 transitions, 2256 flow [2022-10-17 10:20:32,766 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-10-17 10:20:32,767 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-10-17 10:20:32,773 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1204 transitions. [2022-10-17 10:20:32,774 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8788321167883212 [2022-10-17 10:20:32,775 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1204 transitions. [2022-10-17 10:20:32,775 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1204 transitions. [2022-10-17 10:20:32,777 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-10-17 10:20:32,777 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1204 transitions. [2022-10-17 10:20:32,782 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 120.4) internal successors, (1204), 10 states have internal predecessors, (1204), 0 states have call successors, (0), 0 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 10:20:32,787 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 137.0) internal successors, (1507), 11 states have internal predecessors, (1507), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:20:32,788 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 137.0) internal successors, (1507), 11 states have internal predecessors, (1507), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:20:32,789 INFO L175 Difference]: Start difference. First operand has 180 places, 143 transitions, 698 flow. Second operand 10 states and 1204 transitions. [2022-10-17 10:20:32,789 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 183 places, 274 transitions, 2256 flow [2022-10-17 10:20:32,867 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 173 places, 274 transitions, 2136 flow, removed 44 selfloop flow, removed 10 redundant places. [2022-10-17 10:20:32,874 INFO L231 Difference]: Finished difference. Result has 179 places, 159 transitions, 787 flow [2022-10-17 10:20:32,875 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=137, PETRI_DIFFERENCE_MINUEND_FLOW=655, PETRI_DIFFERENCE_MINUEND_PLACES=164, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=143, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=133, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=787, PETRI_PLACES=179, PETRI_TRANSITIONS=159} [2022-10-17 10:20:32,876 INFO L287 CegarLoopForPetriNet]: 144 programPoint places, 35 predicate places. [2022-10-17 10:20:32,876 INFO L495 AbstractCegarLoop]: Abstraction has has 179 places, 159 transitions, 787 flow [2022-10-17 10:20:32,877 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 114.5) internal successors, (687), 6 states have internal predecessors, (687), 0 states have call successors, (0), 0 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 10:20:32,877 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-10-17 10:20:32,877 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 10:20:32,878 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-10-17 10:20:32,878 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-10-17 10:20:32,878 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:20:32,879 INFO L85 PathProgramCache]: Analyzing trace with hash 430264475, now seen corresponding path program 1 times [2022-10-17 10:20:32,879 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:20:32,879 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1208662447] [2022-10-17 10:20:32,879 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:20:32,880 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:20:32,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:20:33,363 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 10:20:33,363 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:20:33,364 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1208662447] [2022-10-17 10:20:33,364 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1208662447] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:20:33,364 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:20:33,364 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-10-17 10:20:33,365 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [627587249] [2022-10-17 10:20:33,365 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:20:33,365 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-10-17 10:20:33,366 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:20:33,366 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-10-17 10:20:33,367 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-10-17 10:20:33,368 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 112 out of 137 [2022-10-17 10:20:33,370 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 179 places, 159 transitions, 787 flow. Second operand has 7 states, 7 states have (on average 114.28571428571429) internal successors, (800), 7 states have internal predecessors, (800), 0 states have call successors, (0), 0 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 10:20:33,370 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-10-17 10:20:33,371 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 112 of 137 [2022-10-17 10:20:33,371 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand