./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/pthread-wmm/mix008.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_35ee8bc8-77db-4d93-a387-a50132b89a2b/bin/uautomizer-J5u9QxTXDZ/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35ee8bc8-77db-4d93-a387-a50132b89a2b/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_35ee8bc8-77db-4d93-a387-a50132b89a2b/bin/uautomizer-J5u9QxTXDZ/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35ee8bc8-77db-4d93-a387-a50132b89a2b/bin/uautomizer-J5u9QxTXDZ/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread-wmm/mix008.opt.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35ee8bc8-77db-4d93-a387-a50132b89a2b/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_35ee8bc8-77db-4d93-a387-a50132b89a2b/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 0e3ed0a0904abf0f880f0f4cc8dc485f79821c4ff1d089df229be68889497ed8 --- 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 10:28:37,618 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-10-17 10:28:37,624 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-10-17 10:28:37,677 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-10-17 10:28:37,678 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-10-17 10:28:37,682 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-10-17 10:28:37,685 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-10-17 10:28:37,689 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-10-17 10:28:37,692 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-10-17 10:28:37,697 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-10-17 10:28:37,698 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-10-17 10:28:37,700 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-10-17 10:28:37,701 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-10-17 10:28:37,703 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-10-17 10:28:37,706 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-10-17 10:28:37,707 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-10-17 10:28:37,709 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-10-17 10:28:37,710 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-10-17 10:28:37,712 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-10-17 10:28:37,722 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-10-17 10:28:37,723 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-10-17 10:28:37,725 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-10-17 10:28:37,727 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-10-17 10:28:37,728 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-10-17 10:28:37,732 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-10-17 10:28:37,732 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-10-17 10:28:37,733 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-10-17 10:28:37,734 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-10-17 10:28:37,734 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-10-17 10:28:37,736 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-10-17 10:28:37,736 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-10-17 10:28:37,737 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-10-17 10:28:37,738 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-10-17 10:28:37,739 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-10-17 10:28:37,740 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-10-17 10:28:37,740 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-10-17 10:28:37,741 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-10-17 10:28:37,741 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-10-17 10:28:37,741 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-10-17 10:28:37,742 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-10-17 10:28:37,743 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-10-17 10:28:37,743 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35ee8bc8-77db-4d93-a387-a50132b89a2b/bin/uautomizer-J5u9QxTXDZ/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-10-17 10:28:37,766 INFO L113 SettingsManager]: Loading preferences was successful [2022-10-17 10:28:37,766 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-10-17 10:28:37,767 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-10-17 10:28:37,767 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-10-17 10:28:37,768 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-10-17 10:28:37,768 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-10-17 10:28:37,769 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-10-17 10:28:37,769 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-10-17 10:28:37,769 INFO L138 SettingsManager]: * Use SBE=true [2022-10-17 10:28:37,769 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-10-17 10:28:37,769 INFO L138 SettingsManager]: * sizeof long=4 [2022-10-17 10:28:37,770 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-10-17 10:28:37,770 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-10-17 10:28:37,770 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-10-17 10:28:37,770 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-10-17 10:28:37,771 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-10-17 10:28:37,771 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-10-17 10:28:37,771 INFO L138 SettingsManager]: * sizeof long double=12 [2022-10-17 10:28:37,771 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-10-17 10:28:37,771 INFO L138 SettingsManager]: * Use constant arrays=true [2022-10-17 10:28:37,772 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-10-17 10:28:37,772 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-10-17 10:28:37,772 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-10-17 10:28:37,772 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-10-17 10:28:37,773 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-17 10:28:37,773 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-10-17 10:28:37,773 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-10-17 10:28:37,773 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-10-17 10:28:37,773 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-10-17 10:28:37,774 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-10-17 10:28:37,774 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-10-17 10:28:37,777 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-10-17 10:28:37,777 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-10-17 10:28:37,778 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_35ee8bc8-77db-4d93-a387-a50132b89a2b/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35ee8bc8-77db-4d93-a387-a50132b89a2b/bin/uautomizer-J5u9QxTXDZ Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0e3ed0a0904abf0f880f0f4cc8dc485f79821c4ff1d089df229be68889497ed8 [2022-10-17 10:28:38,092 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-10-17 10:28:38,123 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-10-17 10:28:38,126 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-10-17 10:28:38,127 INFO L271 PluginConnector]: Initializing CDTParser... [2022-10-17 10:28:38,128 INFO L275 PluginConnector]: CDTParser initialized [2022-10-17 10:28:38,130 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35ee8bc8-77db-4d93-a387-a50132b89a2b/bin/uautomizer-J5u9QxTXDZ/../../sv-benchmarks/c/pthread-wmm/mix008.opt.i [2022-10-17 10:28:38,195 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35ee8bc8-77db-4d93-a387-a50132b89a2b/bin/uautomizer-J5u9QxTXDZ/data/736f87e5e/4736dcd3139343a3bc41b9e34a4b7703/FLAG35705fc54 [2022-10-17 10:28:38,738 INFO L306 CDTParser]: Found 1 translation units. [2022-10-17 10:28:38,744 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35ee8bc8-77db-4d93-a387-a50132b89a2b/sv-benchmarks/c/pthread-wmm/mix008.opt.i [2022-10-17 10:28:38,774 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35ee8bc8-77db-4d93-a387-a50132b89a2b/bin/uautomizer-J5u9QxTXDZ/data/736f87e5e/4736dcd3139343a3bc41b9e34a4b7703/FLAG35705fc54 [2022-10-17 10:28:39,016 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35ee8bc8-77db-4d93-a387-a50132b89a2b/bin/uautomizer-J5u9QxTXDZ/data/736f87e5e/4736dcd3139343a3bc41b9e34a4b7703 [2022-10-17 10:28:39,021 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-10-17 10:28:39,027 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-10-17 10:28:39,031 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-10-17 10:28:39,031 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-10-17 10:28:39,035 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-10-17 10:28:39,036 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.10 10:28:39" (1/1) ... [2022-10-17 10:28:39,038 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@64f899c9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:28:39, skipping insertion in model container [2022-10-17 10:28:39,038 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.10 10:28:39" (1/1) ... [2022-10-17 10:28:39,046 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-10-17 10:28:39,118 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-10-17 10:28:39,393 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_35ee8bc8-77db-4d93-a387-a50132b89a2b/sv-benchmarks/c/pthread-wmm/mix008.opt.i[944,957] [2022-10-17 10:28:39,700 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-17 10:28:39,711 INFO L203 MainTranslator]: Completed pre-run [2022-10-17 10:28:39,732 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_35ee8bc8-77db-4d93-a387-a50132b89a2b/sv-benchmarks/c/pthread-wmm/mix008.opt.i[944,957] [2022-10-17 10:28:39,803 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-17 10:28:39,853 INFO L208 MainTranslator]: Completed translation [2022-10-17 10:28:39,854 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:28:39 WrapperNode [2022-10-17 10:28:39,854 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-10-17 10:28:39,855 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-10-17 10:28:39,856 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-10-17 10:28:39,856 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-10-17 10:28:39,863 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:28:39" (1/1) ... [2022-10-17 10:28:39,901 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:28:39" (1/1) ... [2022-10-17 10:28:39,947 INFO L138 Inliner]: procedures = 177, calls = 71, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 295 [2022-10-17 10:28:39,947 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-10-17 10:28:39,948 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-10-17 10:28:39,948 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-10-17 10:28:39,949 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-10-17 10:28:39,963 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:28:39" (1/1) ... [2022-10-17 10:28:39,964 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:28:39" (1/1) ... [2022-10-17 10:28:39,978 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:28:39" (1/1) ... [2022-10-17 10:28:39,982 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:28:39" (1/1) ... [2022-10-17 10:28:39,994 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:28:39" (1/1) ... [2022-10-17 10:28:40,008 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:28:39" (1/1) ... [2022-10-17 10:28:40,016 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:28:39" (1/1) ... [2022-10-17 10:28:40,019 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:28:39" (1/1) ... [2022-10-17 10:28:40,024 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-10-17 10:28:40,031 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-10-17 10:28:40,033 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-10-17 10:28:40,033 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-10-17 10:28:40,034 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:28:39" (1/1) ... [2022-10-17 10:28:40,040 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-17 10:28:40,054 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35ee8bc8-77db-4d93-a387-a50132b89a2b/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 10:28:40,066 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35ee8bc8-77db-4d93-a387-a50132b89a2b/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-10-17 10:28:40,094 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35ee8bc8-77db-4d93-a387-a50132b89a2b/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-10-17 10:28:40,109 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-10-17 10:28:40,110 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-10-17 10:28:40,110 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-10-17 10:28:40,110 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-10-17 10:28:40,110 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-10-17 10:28:40,110 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2022-10-17 10:28:40,111 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2022-10-17 10:28:40,111 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2022-10-17 10:28:40,111 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2022-10-17 10:28:40,111 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2022-10-17 10:28:40,111 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2022-10-17 10:28:40,111 INFO L130 BoogieDeclarations]: Found specification of procedure P3 [2022-10-17 10:28:40,112 INFO L138 BoogieDeclarations]: Found implementation of procedure P3 [2022-10-17 10:28:40,112 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-10-17 10:28:40,112 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-10-17 10:28:40,112 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-10-17 10:28:40,112 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-10-17 10:28:40,114 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 10:28:40,255 INFO L235 CfgBuilder]: Building ICFG [2022-10-17 10:28:40,257 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-10-17 10:28:41,063 INFO L276 CfgBuilder]: Performing block encoding [2022-10-17 10:28:41,525 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-10-17 10:28:41,525 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-10-17 10:28:41,528 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.10 10:28:41 BoogieIcfgContainer [2022-10-17 10:28:41,528 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-10-17 10:28:41,531 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-10-17 10:28:41,531 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-10-17 10:28:41,534 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-10-17 10:28:41,535 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.10 10:28:39" (1/3) ... [2022-10-17 10:28:41,536 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6bf80449 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.10 10:28:41, skipping insertion in model container [2022-10-17 10:28:41,536 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:28:39" (2/3) ... [2022-10-17 10:28:41,536 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6bf80449 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.10 10:28:41, skipping insertion in model container [2022-10-17 10:28:41,536 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.10 10:28:41" (3/3) ... [2022-10-17 10:28:41,538 INFO L112 eAbstractionObserver]: Analyzing ICFG mix008.opt.i [2022-10-17 10:28:41,547 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-10-17 10:28:41,558 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-10-17 10:28:41,558 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-10-17 10:28:41,558 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-10-17 10:28:41,654 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-10-17 10:28:41,691 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 147 places, 136 transitions, 292 flow [2022-10-17 10:28:41,750 INFO L130 PetriNetUnfolder]: 2/132 cut-off events. [2022-10-17 10:28:41,751 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-10-17 10:28:41,755 INFO L83 FinitePrefix]: Finished finitePrefix Result has 145 conditions, 132 events. 2/132 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 65 event pairs, 0 based on Foata normal form. 0/128 useless extension candidates. Maximal degree in co-relation 90. Up to 2 conditions per place. [2022-10-17 10:28:41,756 INFO L82 GeneralOperation]: Start removeDead. Operand has 147 places, 136 transitions, 292 flow [2022-10-17 10:28:41,761 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 143 places, 132 transitions, 276 flow [2022-10-17 10:28:41,783 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-10-17 10:28:41,793 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;@48ed7037, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-10-17 10:28:41,793 INFO L358 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2022-10-17 10:28:41,845 INFO L130 PetriNetUnfolder]: 0/92 cut-off events. [2022-10-17 10:28:41,845 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-10-17 10:28:41,846 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-10-17 10:28:41,847 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 10:28:41,848 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 10:28:41,852 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:28:41,853 INFO L85 PathProgramCache]: Analyzing trace with hash 581370858, now seen corresponding path program 1 times [2022-10-17 10:28:41,862 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:28:41,863 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1183394621] [2022-10-17 10:28:41,863 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:28:41,864 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:28:42,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:28:42,776 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 10:28:42,777 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:28:42,777 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1183394621] [2022-10-17 10:28:42,778 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1183394621] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:28:42,778 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:28:42,779 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-10-17 10:28:42,780 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2055522551] [2022-10-17 10:28:42,781 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:28:42,791 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-10-17 10:28:42,792 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:28:42,820 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-10-17 10:28:42,822 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-17 10:28:42,825 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 122 out of 136 [2022-10-17 10:28:42,829 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 143 places, 132 transitions, 276 flow. Second operand has 3 states, 3 states have (on average 124.0) internal successors, (372), 3 states have internal predecessors, (372), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:28:42,829 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-10-17 10:28:42,830 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 122 of 136 [2022-10-17 10:28:42,831 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-10-17 10:28:42,949 INFO L130 PetriNetUnfolder]: 14/171 cut-off events. [2022-10-17 10:28:42,949 INFO L131 PetriNetUnfolder]: For 5/5 co-relation queries the response was YES. [2022-10-17 10:28:42,951 INFO L83 FinitePrefix]: Finished finitePrefix Result has 222 conditions, 171 events. 14/171 cut-off events. For 5/5 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 295 event pairs, 2 based on Foata normal form. 7/169 useless extension candidates. Maximal degree in co-relation 164. Up to 25 conditions per place. [2022-10-17 10:28:42,953 INFO L137 encePairwiseOnDemand]: 131/136 looper letters, 10 selfloop transitions, 2 changer transitions 0/130 dead transitions. [2022-10-17 10:28:42,953 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 143 places, 130 transitions, 296 flow [2022-10-17 10:28:42,957 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-10-17 10:28:42,959 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-10-17 10:28:42,968 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 383 transitions. [2022-10-17 10:28:42,971 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.9387254901960784 [2022-10-17 10:28:42,972 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 383 transitions. [2022-10-17 10:28:42,972 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 383 transitions. [2022-10-17 10:28:42,974 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-10-17 10:28:42,977 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 383 transitions. [2022-10-17 10:28:42,981 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 127.66666666666667) internal successors, (383), 3 states have internal predecessors, (383), 0 states have call successors, (0), 0 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 10:28:42,988 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 136.0) internal successors, (544), 4 states have internal predecessors, (544), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:28:42,989 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 136.0) internal successors, (544), 4 states have internal predecessors, (544), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:28:42,990 INFO L175 Difference]: Start difference. First operand has 143 places, 132 transitions, 276 flow. Second operand 3 states and 383 transitions. [2022-10-17 10:28:42,991 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 143 places, 130 transitions, 296 flow [2022-10-17 10:28:42,995 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 139 places, 130 transitions, 292 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-10-17 10:28:43,000 INFO L231 Difference]: Finished difference. Result has 139 places, 128 transitions, 268 flow [2022-10-17 10:28:43,002 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=136, PETRI_DIFFERENCE_MINUEND_FLOW=264, PETRI_DIFFERENCE_MINUEND_PLACES=137, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=128, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=126, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=268, PETRI_PLACES=139, PETRI_TRANSITIONS=128} [2022-10-17 10:28:43,005 INFO L287 CegarLoopForPetriNet]: 143 programPoint places, -4 predicate places. [2022-10-17 10:28:43,006 INFO L495 AbstractCegarLoop]: Abstraction has has 139 places, 128 transitions, 268 flow [2022-10-17 10:28:43,006 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 124.0) internal successors, (372), 3 states have internal predecessors, (372), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:28:43,006 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-10-17 10:28:43,007 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 10:28:43,007 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-10-17 10:28:43,007 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 10:28:43,008 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:28:43,008 INFO L85 PathProgramCache]: Analyzing trace with hash -1360753834, now seen corresponding path program 1 times [2022-10-17 10:28:43,008 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:28:43,008 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1485274052] [2022-10-17 10:28:43,009 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:28:43,009 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:28:43,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:28:43,665 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 10:28:43,665 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:28:43,666 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1485274052] [2022-10-17 10:28:43,667 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1485274052] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:28:43,670 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:28:43,671 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-10-17 10:28:43,671 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [283680762] [2022-10-17 10:28:43,671 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:28:43,674 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-10-17 10:28:43,675 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:28:43,675 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-10-17 10:28:43,676 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-10-17 10:28:43,679 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 104 out of 136 [2022-10-17 10:28:43,685 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 139 places, 128 transitions, 268 flow. Second operand has 7 states, 7 states have (on average 106.42857142857143) internal successors, (745), 7 states have internal predecessors, (745), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:28:43,685 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-10-17 10:28:43,685 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 104 of 136 [2022-10-17 10:28:43,686 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-10-17 10:28:47,276 INFO L130 PetriNetUnfolder]: 4517/10734 cut-off events. [2022-10-17 10:28:47,276 INFO L131 PetriNetUnfolder]: For 168/168 co-relation queries the response was YES. [2022-10-17 10:28:47,337 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17424 conditions, 10734 events. 4517/10734 cut-off events. For 168/168 co-relation queries the response was YES. Maximal size of possible extension queue 583. Compared 102638 event pairs, 575 based on Foata normal form. 0/10502 useless extension candidates. Maximal degree in co-relation 17362. Up to 2074 conditions per place. [2022-10-17 10:28:47,382 INFO L137 encePairwiseOnDemand]: 121/136 looper letters, 36 selfloop transitions, 11 changer transitions 101/235 dead transitions. [2022-10-17 10:28:47,382 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 151 places, 235 transitions, 758 flow [2022-10-17 10:28:47,383 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-10-17 10:28:47,383 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2022-10-17 10:28:47,390 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1490 transitions. [2022-10-17 10:28:47,391 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8427601809954751 [2022-10-17 10:28:47,392 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 1490 transitions. [2022-10-17 10:28:47,392 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 1490 transitions. [2022-10-17 10:28:47,393 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-10-17 10:28:47,394 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 1490 transitions. [2022-10-17 10:28:47,400 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 114.61538461538461) internal successors, (1490), 13 states have internal predecessors, (1490), 0 states have call successors, (0), 0 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 10:28:47,408 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 136.0) internal successors, (1904), 14 states have internal predecessors, (1904), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:28:47,410 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 136.0) internal successors, (1904), 14 states have internal predecessors, (1904), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:28:47,411 INFO L175 Difference]: Start difference. First operand has 139 places, 128 transitions, 268 flow. Second operand 13 states and 1490 transitions. [2022-10-17 10:28:47,411 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 151 places, 235 transitions, 758 flow [2022-10-17 10:28:47,416 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 149 places, 235 transitions, 748 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-10-17 10:28:47,422 INFO L231 Difference]: Finished difference. Result has 161 places, 121 transitions, 372 flow [2022-10-17 10:28:47,422 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=136, PETRI_DIFFERENCE_MINUEND_FLOW=264, PETRI_DIFFERENCE_MINUEND_PLACES=137, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=128, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=117, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=372, PETRI_PLACES=161, PETRI_TRANSITIONS=121} [2022-10-17 10:28:47,423 INFO L287 CegarLoopForPetriNet]: 143 programPoint places, 18 predicate places. [2022-10-17 10:28:47,423 INFO L495 AbstractCegarLoop]: Abstraction has has 161 places, 121 transitions, 372 flow [2022-10-17 10:28:47,424 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 106.42857142857143) internal successors, (745), 7 states have internal predecessors, (745), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:28:47,425 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-10-17 10:28:47,425 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:28:47,425 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-10-17 10:28:47,426 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 10:28:47,428 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:28:47,428 INFO L85 PathProgramCache]: Analyzing trace with hash 652666150, now seen corresponding path program 1 times [2022-10-17 10:28:47,429 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:28:47,429 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [76637180] [2022-10-17 10:28:47,429 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:28:47,430 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:28:47,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:28:48,005 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 10:28:48,007 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:28:48,007 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [76637180] [2022-10-17 10:28:48,007 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [76637180] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:28:48,008 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:28:48,008 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-10-17 10:28:48,009 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1175241575] [2022-10-17 10:28:48,009 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:28:48,011 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-10-17 10:28:48,011 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:28:48,011 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-10-17 10:28:48,012 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-10-17 10:28:48,013 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 104 out of 136 [2022-10-17 10:28:48,015 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 161 places, 121 transitions, 372 flow. Second operand has 7 states, 7 states have (on average 106.71428571428571) internal successors, (747), 7 states have internal predecessors, (747), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:28:48,015 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-10-17 10:28:48,015 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 104 of 136 [2022-10-17 10:28:48,015 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-10-17 10:28:50,284 INFO L130 PetriNetUnfolder]: 2991/6268 cut-off events. [2022-10-17 10:28:50,284 INFO L131 PetriNetUnfolder]: For 15478/15478 co-relation queries the response was YES. [2022-10-17 10:28:50,326 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21320 conditions, 6268 events. 2991/6268 cut-off events. For 15478/15478 co-relation queries the response was YES. Maximal size of possible extension queue 386. Compared 50405 event pairs, 614 based on Foata normal form. 118/6180 useless extension candidates. Maximal degree in co-relation 21242. Up to 1886 conditions per place. [2022-10-17 10:28:50,385 INFO L137 encePairwiseOnDemand]: 118/136 looper letters, 41 selfloop transitions, 24 changer transitions 88/240 dead transitions. [2022-10-17 10:28:50,385 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 150 places, 240 transitions, 1504 flow [2022-10-17 10:28:50,386 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-10-17 10:28:50,386 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2022-10-17 10:28:50,390 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1485 transitions. [2022-10-17 10:28:50,391 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8399321266968326 [2022-10-17 10:28:50,392 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 1485 transitions. [2022-10-17 10:28:50,392 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 1485 transitions. [2022-10-17 10:28:50,393 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-10-17 10:28:50,394 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 1485 transitions. [2022-10-17 10:28:50,399 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 114.23076923076923) internal successors, (1485), 13 states have internal predecessors, (1485), 0 states have call successors, (0), 0 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 10:28:50,405 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 136.0) internal successors, (1904), 14 states have internal predecessors, (1904), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:28:50,406 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 136.0) internal successors, (1904), 14 states have internal predecessors, (1904), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:28:50,407 INFO L175 Difference]: Start difference. First operand has 161 places, 121 transitions, 372 flow. Second operand 13 states and 1485 transitions. [2022-10-17 10:28:50,407 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 150 places, 240 transitions, 1504 flow [2022-10-17 10:28:50,460 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 146 places, 240 transitions, 1476 flow, removed 12 selfloop flow, removed 4 redundant places. [2022-10-17 10:28:50,466 INFO L231 Difference]: Finished difference. Result has 158 places, 135 transitions, 633 flow [2022-10-17 10:28:50,467 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=136, PETRI_DIFFERENCE_MINUEND_FLOW=364, PETRI_DIFFERENCE_MINUEND_PLACES=134, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=121, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=101, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=633, PETRI_PLACES=158, PETRI_TRANSITIONS=135} [2022-10-17 10:28:50,469 INFO L287 CegarLoopForPetriNet]: 143 programPoint places, 15 predicate places. [2022-10-17 10:28:50,470 INFO L495 AbstractCegarLoop]: Abstraction has has 158 places, 135 transitions, 633 flow [2022-10-17 10:28:50,470 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 106.71428571428571) internal successors, (747), 7 states have internal predecessors, (747), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:28:50,471 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-10-17 10:28:50,471 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] [2022-10-17 10:28:50,471 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-10-17 10:28:50,472 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 10:28:50,473 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:28:50,473 INFO L85 PathProgramCache]: Analyzing trace with hash 1139167705, now seen corresponding path program 1 times [2022-10-17 10:28:50,473 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:28:50,473 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [592922753] [2022-10-17 10:28:50,474 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:28:50,474 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:28:50,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:28:50,989 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 10:28:50,989 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:28:50,990 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [592922753] [2022-10-17 10:28:50,990 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [592922753] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:28:50,990 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:28:50,991 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-10-17 10:28:50,991 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1799174553] [2022-10-17 10:28:50,991 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:28:50,993 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-10-17 10:28:50,997 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:28:50,998 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-10-17 10:28:50,998 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-10-17 10:28:50,999 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 104 out of 136 [2022-10-17 10:28:51,003 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 158 places, 135 transitions, 633 flow. Second operand has 7 states, 7 states have (on average 106.85714285714286) internal successors, (748), 7 states have internal predecessors, (748), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:28:51,003 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-10-17 10:28:51,003 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 104 of 136 [2022-10-17 10:28:51,003 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-10-17 10:28:53,093 INFO L130 PetriNetUnfolder]: 2454/5147 cut-off events. [2022-10-17 10:28:53,094 INFO L131 PetriNetUnfolder]: For 25834/25834 co-relation queries the response was YES. [2022-10-17 10:28:53,147 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21914 conditions, 5147 events. 2454/5147 cut-off events. For 25834/25834 co-relation queries the response was YES. Maximal size of possible extension queue 301. Compared 39416 event pairs, 523 based on Foata normal form. 87/5046 useless extension candidates. Maximal degree in co-relation 21816. Up to 1545 conditions per place. [2022-10-17 10:28:53,205 INFO L137 encePairwiseOnDemand]: 119/136 looper letters, 44 selfloop transitions, 34 changer transitions 70/235 dead transitions. [2022-10-17 10:28:53,206 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 161 places, 235 transitions, 1837 flow [2022-10-17 10:28:53,206 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-10-17 10:28:53,207 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2022-10-17 10:28:53,211 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1482 transitions. [2022-10-17 10:28:53,212 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8382352941176471 [2022-10-17 10:28:53,214 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 1482 transitions. [2022-10-17 10:28:53,218 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 1482 transitions. [2022-10-17 10:28:53,219 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-10-17 10:28:53,219 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 1482 transitions. [2022-10-17 10:28:53,224 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 114.0) internal successors, (1482), 13 states have internal predecessors, (1482), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:28:53,229 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 136.0) internal successors, (1904), 14 states have internal predecessors, (1904), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:28:53,230 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 136.0) internal successors, (1904), 14 states have internal predecessors, (1904), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:28:53,231 INFO L175 Difference]: Start difference. First operand has 158 places, 135 transitions, 633 flow. Second operand 13 states and 1482 transitions. [2022-10-17 10:28:53,231 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 161 places, 235 transitions, 1837 flow [2022-10-17 10:28:53,367 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 158 places, 235 transitions, 1765 flow, removed 36 selfloop flow, removed 3 redundant places. [2022-10-17 10:28:53,378 INFO L231 Difference]: Finished difference. Result has 170 places, 145 transitions, 902 flow [2022-10-17 10:28:53,381 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=136, PETRI_DIFFERENCE_MINUEND_FLOW=615, PETRI_DIFFERENCE_MINUEND_PLACES=146, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=135, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=106, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=902, PETRI_PLACES=170, PETRI_TRANSITIONS=145} [2022-10-17 10:28:53,382 INFO L287 CegarLoopForPetriNet]: 143 programPoint places, 27 predicate places. [2022-10-17 10:28:53,383 INFO L495 AbstractCegarLoop]: Abstraction has has 170 places, 145 transitions, 902 flow [2022-10-17 10:28:53,383 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 106.85714285714286) internal successors, (748), 7 states have internal predecessors, (748), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:28:53,384 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-10-17 10:28:53,384 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 10:28:53,384 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-10-17 10:28:53,384 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 10:28:53,385 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:28:53,385 INFO L85 PathProgramCache]: Analyzing trace with hash -1518640237, now seen corresponding path program 1 times [2022-10-17 10:28:53,385 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:28:53,386 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1661991263] [2022-10-17 10:28:53,386 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:28:53,387 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:28:53,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:28:53,833 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 10:28:53,834 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:28:53,834 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1661991263] [2022-10-17 10:28:53,834 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1661991263] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:28:53,834 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:28:53,835 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-10-17 10:28:53,835 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1585480886] [2022-10-17 10:28:53,835 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:28:53,836 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-10-17 10:28:53,836 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:28:53,836 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-10-17 10:28:53,837 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-10-17 10:28:53,838 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 112 out of 136 [2022-10-17 10:28:53,839 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 170 places, 145 transitions, 902 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 10:28:53,839 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-10-17 10:28:53,839 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 112 of 136 [2022-10-17 10:28:53,839 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-10-17 10:28:55,590 INFO L130 PetriNetUnfolder]: 1801/4401 cut-off events. [2022-10-17 10:28:55,591 INFO L131 PetriNetUnfolder]: For 26309/27232 co-relation queries the response was YES. [2022-10-17 10:28:55,642 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19261 conditions, 4401 events. 1801/4401 cut-off events. For 26309/27232 co-relation queries the response was YES. Maximal size of possible extension queue 287. Compared 37610 event pairs, 577 based on Foata normal form. 306/4533 useless extension candidates. Maximal degree in co-relation 19157. Up to 1329 conditions per place. [2022-10-17 10:28:55,675 INFO L137 encePairwiseOnDemand]: 130/136 looper letters, 40 selfloop transitions, 8 changer transitions 47/205 dead transitions. [2022-10-17 10:28:55,675 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 169 places, 205 transitions, 1718 flow [2022-10-17 10:28:55,676 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-10-17 10:28:55,676 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-10-17 10:28:55,678 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1070 transitions. [2022-10-17 10:28:55,679 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8741830065359477 [2022-10-17 10:28:55,680 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1070 transitions. [2022-10-17 10:28:55,680 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1070 transitions. [2022-10-17 10:28:55,681 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-10-17 10:28:55,681 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1070 transitions. [2022-10-17 10:28:55,684 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 118.88888888888889) internal successors, (1070), 9 states have internal predecessors, (1070), 0 states have call successors, (0), 0 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 10:28:55,687 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 136.0) internal successors, (1360), 10 states have internal predecessors, (1360), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:28:55,688 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 136.0) internal successors, (1360), 10 states have internal predecessors, (1360), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:28:55,689 INFO L175 Difference]: Start difference. First operand has 170 places, 145 transitions, 902 flow. Second operand 9 states and 1070 transitions. [2022-10-17 10:28:55,689 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 169 places, 205 transitions, 1718 flow [2022-10-17 10:28:55,770 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 154 places, 205 transitions, 1620 flow, removed 49 selfloop flow, removed 15 redundant places. [2022-10-17 10:28:55,779 INFO L231 Difference]: Finished difference. Result has 161 places, 144 transitions, 866 flow [2022-10-17 10:28:55,780 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=136, PETRI_DIFFERENCE_MINUEND_FLOW=846, PETRI_DIFFERENCE_MINUEND_PLACES=146, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=145, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=137, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=866, PETRI_PLACES=161, PETRI_TRANSITIONS=144} [2022-10-17 10:28:55,783 INFO L287 CegarLoopForPetriNet]: 143 programPoint places, 18 predicate places. [2022-10-17 10:28:55,783 INFO L495 AbstractCegarLoop]: Abstraction has has 161 places, 144 transitions, 866 flow [2022-10-17 10:28:55,784 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 10:28:55,784 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-10-17 10:28:55,784 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 10:28:55,784 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-10-17 10:28:55,784 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 10:28:55,785 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:28:55,786 INFO L85 PathProgramCache]: Analyzing trace with hash 1799817686, now seen corresponding path program 1 times [2022-10-17 10:28:55,786 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:28:55,786 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [924516037] [2022-10-17 10:28:55,786 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:28:55,787 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:28:55,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:28:56,160 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 10:28:56,161 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:28:56,161 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [924516037] [2022-10-17 10:28:56,161 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [924516037] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:28:56,162 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:28:56,162 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-10-17 10:28:56,163 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1705116882] [2022-10-17 10:28:56,163 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:28:56,164 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-10-17 10:28:56,164 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:28:56,166 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-10-17 10:28:56,166 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-10-17 10:28:56,168 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 104 out of 136 [2022-10-17 10:28:56,170 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 161 places, 144 transitions, 866 flow. Second operand has 7 states, 7 states have (on average 107.0) internal successors, (749), 7 states have internal predecessors, (749), 0 states have call successors, (0), 0 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 10:28:56,170 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-10-17 10:28:56,170 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 104 of 136 [2022-10-17 10:28:56,170 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-10-17 10:28:58,212 INFO L130 PetriNetUnfolder]: 2171/4683 cut-off events. [2022-10-17 10:28:58,213 INFO L131 PetriNetUnfolder]: For 31868/31868 co-relation queries the response was YES. [2022-10-17 10:28:58,241 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22093 conditions, 4683 events. 2171/4683 cut-off events. For 31868/31868 co-relation queries the response was YES. Maximal size of possible extension queue 283. Compared 37402 event pairs, 336 based on Foata normal form. 97/4638 useless extension candidates. Maximal degree in co-relation 21983. Up to 1327 conditions per place. [2022-10-17 10:28:58,274 INFO L137 encePairwiseOnDemand]: 124/136 looper letters, 67 selfloop transitions, 15 changer transitions 75/244 dead transitions. [2022-10-17 10:28:58,274 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 167 places, 244 transitions, 2270 flow [2022-10-17 10:28:58,275 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-10-17 10:28:58,275 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2022-10-17 10:28:58,280 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1466 transitions. [2022-10-17 10:28:58,281 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.829185520361991 [2022-10-17 10:28:58,281 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 1466 transitions. [2022-10-17 10:28:58,281 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 1466 transitions. [2022-10-17 10:28:58,283 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-10-17 10:28:58,283 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 1466 transitions. [2022-10-17 10:28:58,288 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 112.76923076923077) internal successors, (1466), 13 states have internal predecessors, (1466), 0 states have call successors, (0), 0 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 10:28:58,292 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 136.0) internal successors, (1904), 14 states have internal predecessors, (1904), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:28:58,293 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 136.0) internal successors, (1904), 14 states have internal predecessors, (1904), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:28:58,293 INFO L175 Difference]: Start difference. First operand has 161 places, 144 transitions, 866 flow. Second operand 13 states and 1466 transitions. [2022-10-17 10:28:58,294 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 167 places, 244 transitions, 2270 flow [2022-10-17 10:28:58,378 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 160 places, 244 transitions, 2200 flow, removed 24 selfloop flow, removed 7 redundant places. [2022-10-17 10:28:58,383 INFO L231 Difference]: Finished difference. Result has 172 places, 152 transitions, 1071 flow [2022-10-17 10:28:58,384 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=136, PETRI_DIFFERENCE_MINUEND_FLOW=846, PETRI_DIFFERENCE_MINUEND_PLACES=148, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=144, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=129, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=1071, PETRI_PLACES=172, PETRI_TRANSITIONS=152} [2022-10-17 10:28:58,384 INFO L287 CegarLoopForPetriNet]: 143 programPoint places, 29 predicate places. [2022-10-17 10:28:58,385 INFO L495 AbstractCegarLoop]: Abstraction has has 172 places, 152 transitions, 1071 flow [2022-10-17 10:28:58,385 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 107.0) internal successors, (749), 7 states have internal predecessors, (749), 0 states have call successors, (0), 0 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 10:28:58,385 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-10-17 10:28:58,386 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 10:28:58,386 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-10-17 10:28:58,386 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 10:28:58,387 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:28:58,387 INFO L85 PathProgramCache]: Analyzing trace with hash 737130042, now seen corresponding path program 1 times [2022-10-17 10:28:58,387 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:28:58,387 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1719116150] [2022-10-17 10:28:58,388 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:28:58,388 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:28:58,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:28:58,791 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 10:28:58,791 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:28:58,792 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1719116150] [2022-10-17 10:28:58,792 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1719116150] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:28:58,792 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:28:58,792 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-10-17 10:28:58,797 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [662030328] [2022-10-17 10:28:58,797 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:28:58,797 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-10-17 10:28:58,798 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:28:58,798 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-10-17 10:28:58,798 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-10-17 10:28:58,800 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 111 out of 136 [2022-10-17 10:28:58,801 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 172 places, 152 transitions, 1071 flow. Second operand has 6 states, 6 states have (on average 113.33333333333333) internal successors, (680), 6 states have internal predecessors, (680), 0 states have call successors, (0), 0 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 10:28:58,801 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-10-17 10:28:58,801 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 111 of 136 [2022-10-17 10:28:58,801 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-10-17 10:29:06,615 INFO L130 PetriNetUnfolder]: 14601/25690 cut-off events. [2022-10-17 10:29:06,615 INFO L131 PetriNetUnfolder]: For 120153/174589 co-relation queries the response was YES. [2022-10-17 10:29:06,979 INFO L83 FinitePrefix]: Finished finitePrefix Result has 80414 conditions, 25690 events. 14601/25690 cut-off events. For 120153/174589 co-relation queries the response was YES. Maximal size of possible extension queue 1911. Compared 234734 event pairs, 551 based on Foata normal form. 742/24189 useless extension candidates. Maximal degree in co-relation 80302. Up to 8712 conditions per place. [2022-10-17 10:29:07,099 INFO L137 encePairwiseOnDemand]: 125/136 looper letters, 81 selfloop transitions, 20 changer transitions 28/255 dead transitions. [2022-10-17 10:29:07,099 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 172 places, 255 transitions, 2171 flow [2022-10-17 10:29:07,100 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-10-17 10:29:07,101 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-10-17 10:29:07,104 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1201 transitions. [2022-10-17 10:29:07,105 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8830882352941176 [2022-10-17 10:29:07,105 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1201 transitions. [2022-10-17 10:29:07,106 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1201 transitions. [2022-10-17 10:29:07,107 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-10-17 10:29:07,107 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1201 transitions. [2022-10-17 10:29:07,111 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 120.1) internal successors, (1201), 10 states have internal predecessors, (1201), 0 states have call successors, (0), 0 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 10:29:07,115 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 136.0) internal successors, (1496), 11 states have internal predecessors, (1496), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:29:07,116 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 136.0) internal successors, (1496), 11 states have internal predecessors, (1496), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:29:07,116 INFO L175 Difference]: Start difference. First operand has 172 places, 152 transitions, 1071 flow. Second operand 10 states and 1201 transitions. [2022-10-17 10:29:07,116 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 172 places, 255 transitions, 2171 flow [2022-10-17 10:29:07,262 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 167 places, 255 transitions, 2140 flow, removed 10 selfloop flow, removed 5 redundant places. [2022-10-17 10:29:07,268 INFO L231 Difference]: Finished difference. Result has 173 places, 170 transitions, 1183 flow [2022-10-17 10:29:07,269 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=136, PETRI_DIFFERENCE_MINUEND_FLOW=1040, PETRI_DIFFERENCE_MINUEND_PLACES=158, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=152, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=142, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1183, PETRI_PLACES=173, PETRI_TRANSITIONS=170} [2022-10-17 10:29:07,269 INFO L287 CegarLoopForPetriNet]: 143 programPoint places, 30 predicate places. [2022-10-17 10:29:07,270 INFO L495 AbstractCegarLoop]: Abstraction has has 173 places, 170 transitions, 1183 flow [2022-10-17 10:29:07,270 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 113.33333333333333) internal successors, (680), 6 states have internal predecessors, (680), 0 states have call successors, (0), 0 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 10:29:07,270 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-10-17 10:29:07,271 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:29:07,271 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-10-17 10:29:07,271 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 10:29:07,272 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:29:07,272 INFO L85 PathProgramCache]: Analyzing trace with hash -133973663, now seen corresponding path program 1 times [2022-10-17 10:29:07,272 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:29:07,272 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1440130868] [2022-10-17 10:29:07,272 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:29:07,273 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:29:07,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:29:07,643 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 10:29:07,644 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:29:07,644 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1440130868] [2022-10-17 10:29:07,644 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1440130868] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:29:07,644 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:29:07,644 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-10-17 10:29:07,645 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1764849542] [2022-10-17 10:29:07,645 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:29:07,645 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-10-17 10:29:07,645 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:29:07,646 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-10-17 10:29:07,647 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-10-17 10:29:07,648 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 104 out of 136 [2022-10-17 10:29:07,649 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 173 places, 170 transitions, 1183 flow. Second operand has 7 states, 7 states have (on average 107.14285714285714) internal successors, (750), 7 states have internal predecessors, (750), 0 states have call successors, (0), 0 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 10:29:07,649 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-10-17 10:29:07,650 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 104 of 136 [2022-10-17 10:29:07,650 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand