./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/weaver/test-hard1.wvr.c --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_be858716-e7c4-42ab-80bb-ab7aba624e19/bin/uautomizer-J5u9QxTXDZ/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be858716-e7c4-42ab-80bb-ab7aba624e19/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_be858716-e7c4-42ab-80bb-ab7aba624e19/bin/uautomizer-J5u9QxTXDZ/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be858716-e7c4-42ab-80bb-ab7aba624e19/bin/uautomizer-J5u9QxTXDZ/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/test-hard1.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be858716-e7c4-42ab-80bb-ab7aba624e19/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_be858716-e7c4-42ab-80bb-ab7aba624e19/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 782f6af95152c43f9bba17dfd450d57dc3073723e35aa3f98da1f0b96067f4d1 --- 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 10:40:14,824 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-10-17 10:40:14,827 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-10-17 10:40:14,886 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-10-17 10:40:14,887 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-10-17 10:40:14,891 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-10-17 10:40:14,894 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-10-17 10:40:14,897 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-10-17 10:40:14,900 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-10-17 10:40:14,908 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-10-17 10:40:14,909 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-10-17 10:40:14,911 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-10-17 10:40:14,912 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-10-17 10:40:14,915 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-10-17 10:40:14,917 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-10-17 10:40:14,919 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-10-17 10:40:14,921 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-10-17 10:40:14,922 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-10-17 10:40:14,924 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-10-17 10:40:14,934 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-10-17 10:40:14,936 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-10-17 10:40:14,938 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-10-17 10:40:14,941 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-10-17 10:40:14,942 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-10-17 10:40:14,952 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-10-17 10:40:14,953 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-10-17 10:40:14,953 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-10-17 10:40:14,955 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-10-17 10:40:14,956 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-10-17 10:40:14,957 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-10-17 10:40:14,957 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-10-17 10:40:14,958 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-10-17 10:40:14,960 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-10-17 10:40:14,962 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-10-17 10:40:14,963 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-10-17 10:40:14,963 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-10-17 10:40:14,964 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-10-17 10:40:14,964 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-10-17 10:40:14,964 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-10-17 10:40:14,965 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-10-17 10:40:14,966 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-10-17 10:40:14,967 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be858716-e7c4-42ab-80bb-ab7aba624e19/bin/uautomizer-J5u9QxTXDZ/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-10-17 10:40:15,012 INFO L113 SettingsManager]: Loading preferences was successful [2022-10-17 10:40:15,013 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-10-17 10:40:15,013 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-10-17 10:40:15,013 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-10-17 10:40:15,014 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-10-17 10:40:15,015 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-10-17 10:40:15,015 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-10-17 10:40:15,016 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-10-17 10:40:15,016 INFO L138 SettingsManager]: * Use SBE=true [2022-10-17 10:40:15,016 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-10-17 10:40:15,017 INFO L138 SettingsManager]: * sizeof long=4 [2022-10-17 10:40:15,017 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-10-17 10:40:15,018 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-10-17 10:40:15,018 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-10-17 10:40:15,018 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-10-17 10:40:15,018 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-10-17 10:40:15,018 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-10-17 10:40:15,019 INFO L138 SettingsManager]: * sizeof long double=12 [2022-10-17 10:40:15,019 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-10-17 10:40:15,019 INFO L138 SettingsManager]: * Use constant arrays=true [2022-10-17 10:40:15,019 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-10-17 10:40:15,019 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-10-17 10:40:15,020 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-10-17 10:40:15,020 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-10-17 10:40:15,020 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-17 10:40:15,020 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-10-17 10:40:15,021 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-10-17 10:40:15,021 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-10-17 10:40:15,021 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-10-17 10:40:15,021 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-10-17 10:40:15,021 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-10-17 10:40:15,022 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-10-17 10:40:15,022 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-10-17 10:40:15,022 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_be858716-e7c4-42ab-80bb-ab7aba624e19/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be858716-e7c4-42ab-80bb-ab7aba624e19/bin/uautomizer-J5u9QxTXDZ Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 782f6af95152c43f9bba17dfd450d57dc3073723e35aa3f98da1f0b96067f4d1 [2022-10-17 10:40:15,299 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-10-17 10:40:15,320 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-10-17 10:40:15,322 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-10-17 10:40:15,324 INFO L271 PluginConnector]: Initializing CDTParser... [2022-10-17 10:40:15,325 INFO L275 PluginConnector]: CDTParser initialized [2022-10-17 10:40:15,326 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be858716-e7c4-42ab-80bb-ab7aba624e19/bin/uautomizer-J5u9QxTXDZ/../../sv-benchmarks/c/weaver/test-hard1.wvr.c [2022-10-17 10:40:15,393 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be858716-e7c4-42ab-80bb-ab7aba624e19/bin/uautomizer-J5u9QxTXDZ/data/c1d3ec433/2ab539bf701941f583b598d8bcb60312/FLAG983fc779f [2022-10-17 10:40:15,923 INFO L306 CDTParser]: Found 1 translation units. [2022-10-17 10:40:15,923 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be858716-e7c4-42ab-80bb-ab7aba624e19/sv-benchmarks/c/weaver/test-hard1.wvr.c [2022-10-17 10:40:15,931 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be858716-e7c4-42ab-80bb-ab7aba624e19/bin/uautomizer-J5u9QxTXDZ/data/c1d3ec433/2ab539bf701941f583b598d8bcb60312/FLAG983fc779f [2022-10-17 10:40:16,298 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be858716-e7c4-42ab-80bb-ab7aba624e19/bin/uautomizer-J5u9QxTXDZ/data/c1d3ec433/2ab539bf701941f583b598d8bcb60312 [2022-10-17 10:40:16,301 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-10-17 10:40:16,302 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-10-17 10:40:16,304 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-10-17 10:40:16,304 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-10-17 10:40:16,307 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-10-17 10:40:16,308 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.10 10:40:16" (1/1) ... [2022-10-17 10:40:16,309 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4441c4c0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:40:16, skipping insertion in model container [2022-10-17 10:40:16,309 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.10 10:40:16" (1/1) ... [2022-10-17 10:40:16,316 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-10-17 10:40:16,340 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-10-17 10:40:16,587 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_be858716-e7c4-42ab-80bb-ab7aba624e19/sv-benchmarks/c/weaver/test-hard1.wvr.c[3373,3386] [2022-10-17 10:40:16,596 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-17 10:40:16,606 INFO L203 MainTranslator]: Completed pre-run [2022-10-17 10:40:16,655 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_be858716-e7c4-42ab-80bb-ab7aba624e19/sv-benchmarks/c/weaver/test-hard1.wvr.c[3373,3386] [2022-10-17 10:40:16,656 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-17 10:40:16,669 INFO L208 MainTranslator]: Completed translation [2022-10-17 10:40:16,670 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:40:16 WrapperNode [2022-10-17 10:40:16,670 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-10-17 10:40:16,671 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-10-17 10:40:16,671 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-10-17 10:40:16,671 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-10-17 10:40:16,679 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:40:16" (1/1) ... [2022-10-17 10:40:16,698 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:40:16" (1/1) ... [2022-10-17 10:40:16,728 INFO L138 Inliner]: procedures = 24, calls = 56, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 93 [2022-10-17 10:40:16,729 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-10-17 10:40:16,729 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-10-17 10:40:16,730 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-10-17 10:40:16,730 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-10-17 10:40:16,738 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:40:16" (1/1) ... [2022-10-17 10:40:16,738 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:40:16" (1/1) ... [2022-10-17 10:40:16,751 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:40:16" (1/1) ... [2022-10-17 10:40:16,752 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:40:16" (1/1) ... [2022-10-17 10:40:16,757 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:40:16" (1/1) ... [2022-10-17 10:40:16,773 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:40:16" (1/1) ... [2022-10-17 10:40:16,774 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:40:16" (1/1) ... [2022-10-17 10:40:16,776 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:40:16" (1/1) ... [2022-10-17 10:40:16,778 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-10-17 10:40:16,779 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-10-17 10:40:16,779 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-10-17 10:40:16,779 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-10-17 10:40:16,790 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:40:16" (1/1) ... [2022-10-17 10:40:16,796 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-17 10:40:16,809 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be858716-e7c4-42ab-80bb-ab7aba624e19/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 10:40:16,826 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be858716-e7c4-42ab-80bb-ab7aba624e19/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-10-17 10:40:16,856 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be858716-e7c4-42ab-80bb-ab7aba624e19/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-10-17 10:40:16,879 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-10-17 10:40:16,879 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-10-17 10:40:16,879 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-10-17 10:40:16,880 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-10-17 10:40:16,880 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-10-17 10:40:16,880 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2022-10-17 10:40:16,880 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2022-10-17 10:40:16,880 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2022-10-17 10:40:16,881 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2022-10-17 10:40:16,881 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-10-17 10:40:16,881 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-10-17 10:40:16,881 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-10-17 10:40:16,881 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-10-17 10:40:16,881 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-10-17 10:40:16,882 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-10-17 10:40:16,882 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-10-17 10:40:16,882 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-10-17 10:40:16,882 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-10-17 10:40:16,884 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 10:40:17,013 INFO L235 CfgBuilder]: Building ICFG [2022-10-17 10:40:17,016 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-10-17 10:40:17,362 INFO L276 CfgBuilder]: Performing block encoding [2022-10-17 10:40:17,435 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-10-17 10:40:17,452 INFO L300 CfgBuilder]: Removed 4 assume(true) statements. [2022-10-17 10:40:17,455 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.10 10:40:17 BoogieIcfgContainer [2022-10-17 10:40:17,468 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-10-17 10:40:17,471 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-10-17 10:40:17,471 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-10-17 10:40:17,474 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-10-17 10:40:17,474 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.10 10:40:16" (1/3) ... [2022-10-17 10:40:17,475 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@157f5237 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.10 10:40:17, skipping insertion in model container [2022-10-17 10:40:17,475 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:40:16" (2/3) ... [2022-10-17 10:40:17,476 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@157f5237 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.10 10:40:17, skipping insertion in model container [2022-10-17 10:40:17,476 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.10 10:40:17" (3/3) ... [2022-10-17 10:40:17,477 INFO L112 eAbstractionObserver]: Analyzing ICFG test-hard1.wvr.c [2022-10-17 10:40:17,485 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-10-17 10:40:17,503 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-10-17 10:40:17,504 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-10-17 10:40:17,504 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-10-17 10:40:17,625 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2022-10-17 10:40:17,737 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 138 places, 135 transitions, 302 flow [2022-10-17 10:40:17,872 INFO L130 PetriNetUnfolder]: 10/131 cut-off events. [2022-10-17 10:40:17,873 INFO L131 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2022-10-17 10:40:17,881 INFO L83 FinitePrefix]: Finished finitePrefix Result has 148 conditions, 131 events. 10/131 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 75 event pairs, 0 based on Foata normal form. 0/120 useless extension candidates. Maximal degree in co-relation 92. Up to 2 conditions per place. [2022-10-17 10:40:17,882 INFO L82 GeneralOperation]: Start removeDead. Operand has 138 places, 135 transitions, 302 flow [2022-10-17 10:40:17,891 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 121 places, 118 transitions, 260 flow [2022-10-17 10:40:17,913 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-10-17 10:40:17,924 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;@412ae967, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-10-17 10:40:17,924 INFO L358 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2022-10-17 10:40:18,005 INFO L130 PetriNetUnfolder]: 10/117 cut-off events. [2022-10-17 10:40:18,012 INFO L131 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2022-10-17 10:40:18,013 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-10-17 10:40:18,014 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:40:18,015 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-10-17 10:40:18,020 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:40:18,021 INFO L85 PathProgramCache]: Analyzing trace with hash 1971330738, now seen corresponding path program 1 times [2022-10-17 10:40:18,031 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:40:18,032 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1830396551] [2022-10-17 10:40:18,033 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:40:18,033 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:40:18,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:40:18,522 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 10:40:18,523 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:40:18,523 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1830396551] [2022-10-17 10:40:18,524 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1830396551] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:40:18,524 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:40:18,525 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-10-17 10:40:18,527 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [796947310] [2022-10-17 10:40:18,528 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:40:18,538 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-10-17 10:40:18,538 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:40:18,601 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-10-17 10:40:18,603 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-10-17 10:40:18,612 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 116 out of 135 [2022-10-17 10:40:18,620 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 121 places, 118 transitions, 260 flow. Second operand has 2 states, 2 states have (on average 120.5) internal successors, (241), 2 states have internal predecessors, (241), 0 states have call successors, (0), 0 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 10:40:18,621 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-10-17 10:40:18,621 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 116 of 135 [2022-10-17 10:40:18,622 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-10-17 10:40:18,874 INFO L130 PetriNetUnfolder]: 121/427 cut-off events. [2022-10-17 10:40:18,874 INFO L131 PetriNetUnfolder]: For 106/107 co-relation queries the response was YES. [2022-10-17 10:40:18,894 INFO L83 FinitePrefix]: Finished finitePrefix Result has 655 conditions, 427 events. 121/427 cut-off events. For 106/107 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 1663 event pairs, 51 based on Foata normal form. 119/492 useless extension candidates. Maximal degree in co-relation 504. Up to 163 conditions per place. [2022-10-17 10:40:18,899 INFO L137 encePairwiseOnDemand]: 129/135 looper letters, 12 selfloop transitions, 0 changer transitions 2/112 dead transitions. [2022-10-17 10:40:18,900 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 122 places, 112 transitions, 272 flow [2022-10-17 10:40:18,901 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-10-17 10:40:18,904 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2022-10-17 10:40:18,922 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 250 transitions. [2022-10-17 10:40:18,930 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.9259259259259259 [2022-10-17 10:40:18,938 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 250 transitions. [2022-10-17 10:40:18,939 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 250 transitions. [2022-10-17 10:40:18,940 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-10-17 10:40:18,942 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 250 transitions. [2022-10-17 10:40:18,946 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 125.0) internal successors, (250), 2 states have internal predecessors, (250), 0 states have call successors, (0), 0 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 10:40:18,952 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 135.0) internal successors, (405), 3 states have internal predecessors, (405), 0 states have call successors, (0), 0 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 10:40:18,953 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 135.0) internal successors, (405), 3 states have internal predecessors, (405), 0 states have call successors, (0), 0 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 10:40:18,954 INFO L175 Difference]: Start difference. First operand has 121 places, 118 transitions, 260 flow. Second operand 2 states and 250 transitions. [2022-10-17 10:40:18,955 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 122 places, 112 transitions, 272 flow [2022-10-17 10:40:18,958 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 114 places, 112 transitions, 256 flow, removed 0 selfloop flow, removed 8 redundant places. [2022-10-17 10:40:18,962 INFO L231 Difference]: Finished difference. Result has 114 places, 110 transitions, 228 flow [2022-10-17 10:40:18,965 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=135, PETRI_DIFFERENCE_MINUEND_FLOW=232, PETRI_DIFFERENCE_MINUEND_PLACES=113, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=112, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=112, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=228, PETRI_PLACES=114, PETRI_TRANSITIONS=110} [2022-10-17 10:40:18,968 INFO L287 CegarLoopForPetriNet]: 121 programPoint places, -7 predicate places. [2022-10-17 10:40:18,969 INFO L495 AbstractCegarLoop]: Abstraction has has 114 places, 110 transitions, 228 flow [2022-10-17 10:40:18,969 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 120.5) internal successors, (241), 2 states have internal predecessors, (241), 0 states have call successors, (0), 0 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 10:40:18,969 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-10-17 10:40:18,970 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:40:18,971 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-10-17 10:40:18,971 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-10-17 10:40:18,972 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:40:18,973 INFO L85 PathProgramCache]: Analyzing trace with hash 1458941569, now seen corresponding path program 1 times [2022-10-17 10:40:18,973 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:40:18,973 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1258511912] [2022-10-17 10:40:18,973 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:40:18,974 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:40:19,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:40:19,775 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 10:40:19,776 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:40:19,777 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1258511912] [2022-10-17 10:40:19,781 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1258511912] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:40:19,781 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:40:19,781 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-10-17 10:40:19,781 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [789335394] [2022-10-17 10:40:19,782 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:40:19,783 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-10-17 10:40:19,784 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:40:19,784 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-10-17 10:40:19,786 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2022-10-17 10:40:19,795 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 102 out of 135 [2022-10-17 10:40:19,796 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 114 places, 110 transitions, 228 flow. Second operand has 7 states, 7 states have (on average 104.85714285714286) internal successors, (734), 7 states have internal predecessors, (734), 0 states have call successors, (0), 0 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 10:40:19,797 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-10-17 10:40:19,797 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 102 of 135 [2022-10-17 10:40:19,797 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-10-17 10:40:20,093 INFO L130 PetriNetUnfolder]: 137/476 cut-off events. [2022-10-17 10:40:20,094 INFO L131 PetriNetUnfolder]: For 33/34 co-relation queries the response was YES. [2022-10-17 10:40:20,097 INFO L83 FinitePrefix]: Finished finitePrefix Result has 695 conditions, 476 events. 137/476 cut-off events. For 33/34 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 1922 event pairs, 8 based on Foata normal form. 1/426 useless extension candidates. Maximal degree in co-relation 692. Up to 187 conditions per place. [2022-10-17 10:40:20,104 INFO L137 encePairwiseOnDemand]: 125/135 looper letters, 27 selfloop transitions, 7 changer transitions 4/124 dead transitions. [2022-10-17 10:40:20,104 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 118 places, 124 transitions, 339 flow [2022-10-17 10:40:20,105 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-10-17 10:40:20,105 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-10-17 10:40:20,112 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 753 transitions. [2022-10-17 10:40:20,113 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.7968253968253968 [2022-10-17 10:40:20,113 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 753 transitions. [2022-10-17 10:40:20,114 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 753 transitions. [2022-10-17 10:40:20,116 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-10-17 10:40:20,116 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 753 transitions. [2022-10-17 10:40:20,120 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 107.57142857142857) internal successors, (753), 7 states have internal predecessors, (753), 0 states have call successors, (0), 0 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 10:40:20,126 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 135.0) internal successors, (1080), 8 states have internal predecessors, (1080), 0 states have call successors, (0), 0 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 10:40:20,127 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 135.0) internal successors, (1080), 8 states have internal predecessors, (1080), 0 states have call successors, (0), 0 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 10:40:20,128 INFO L175 Difference]: Start difference. First operand has 114 places, 110 transitions, 228 flow. Second operand 7 states and 753 transitions. [2022-10-17 10:40:20,128 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 118 places, 124 transitions, 339 flow [2022-10-17 10:40:20,132 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 118 places, 124 transitions, 339 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-10-17 10:40:20,136 INFO L231 Difference]: Finished difference. Result has 121 places, 114 transitions, 269 flow [2022-10-17 10:40:20,137 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=135, PETRI_DIFFERENCE_MINUEND_FLOW=228, PETRI_DIFFERENCE_MINUEND_PLACES=112, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=110, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=103, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=269, PETRI_PLACES=121, PETRI_TRANSITIONS=114} [2022-10-17 10:40:20,138 INFO L287 CegarLoopForPetriNet]: 121 programPoint places, 0 predicate places. [2022-10-17 10:40:20,138 INFO L495 AbstractCegarLoop]: Abstraction has has 121 places, 114 transitions, 269 flow [2022-10-17 10:40:20,139 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 104.85714285714286) internal successors, (734), 7 states have internal predecessors, (734), 0 states have call successors, (0), 0 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 10:40:20,139 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-10-17 10:40:20,140 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:40:20,140 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-10-17 10:40:20,140 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-10-17 10:40:20,141 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:40:20,141 INFO L85 PathProgramCache]: Analyzing trace with hash 2000317350, now seen corresponding path program 1 times [2022-10-17 10:40:20,141 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:40:20,142 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [130670852] [2022-10-17 10:40:20,142 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:40:20,142 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:40:20,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:40:20,743 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 10:40:20,744 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:40:20,745 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [130670852] [2022-10-17 10:40:20,745 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [130670852] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:40:20,746 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:40:20,746 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-10-17 10:40:20,747 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [119473306] [2022-10-17 10:40:20,747 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:40:20,748 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-10-17 10:40:20,749 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:40:20,749 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-10-17 10:40:20,750 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-10-17 10:40:20,752 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 105 out of 135 [2022-10-17 10:40:20,753 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 121 places, 114 transitions, 269 flow. Second operand has 5 states, 5 states have (on average 108.6) internal successors, (543), 5 states have internal predecessors, (543), 0 states have call successors, (0), 0 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 10:40:20,753 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-10-17 10:40:20,753 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 105 of 135 [2022-10-17 10:40:20,754 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-10-17 10:40:21,319 INFO L130 PetriNetUnfolder]: 1058/2294 cut-off events. [2022-10-17 10:40:21,320 INFO L131 PetriNetUnfolder]: For 574/574 co-relation queries the response was YES. [2022-10-17 10:40:21,332 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4743 conditions, 2294 events. 1058/2294 cut-off events. For 574/574 co-relation queries the response was YES. Maximal size of possible extension queue 129. Compared 14915 event pairs, 222 based on Foata normal form. 0/1925 useless extension candidates. Maximal degree in co-relation 4736. Up to 735 conditions per place. [2022-10-17 10:40:21,352 INFO L137 encePairwiseOnDemand]: 125/135 looper letters, 59 selfloop transitions, 11 changer transitions 0/157 dead transitions. [2022-10-17 10:40:21,353 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 124 places, 157 transitions, 552 flow [2022-10-17 10:40:21,353 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-10-17 10:40:21,354 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-10-17 10:40:21,355 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 689 transitions. [2022-10-17 10:40:21,356 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8506172839506173 [2022-10-17 10:40:21,356 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 689 transitions. [2022-10-17 10:40:21,357 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 689 transitions. [2022-10-17 10:40:21,357 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-10-17 10:40:21,358 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 689 transitions. [2022-10-17 10:40:21,360 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 114.83333333333333) internal successors, (689), 6 states have internal predecessors, (689), 0 states have call successors, (0), 0 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 10:40:21,363 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 135.0) internal successors, (945), 7 states have internal predecessors, (945), 0 states have call successors, (0), 0 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 10:40:21,364 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 135.0) internal successors, (945), 7 states have internal predecessors, (945), 0 states have call successors, (0), 0 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 10:40:21,364 INFO L175 Difference]: Start difference. First operand has 121 places, 114 transitions, 269 flow. Second operand 6 states and 689 transitions. [2022-10-17 10:40:21,364 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 124 places, 157 transitions, 552 flow [2022-10-17 10:40:21,369 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 119 places, 157 transitions, 531 flow, removed 2 selfloop flow, removed 5 redundant places. [2022-10-17 10:40:21,373 INFO L231 Difference]: Finished difference. Result has 122 places, 120 transitions, 322 flow [2022-10-17 10:40:21,374 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=135, PETRI_DIFFERENCE_MINUEND_FLOW=256, PETRI_DIFFERENCE_MINUEND_PLACES=114, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=114, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=103, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=322, PETRI_PLACES=122, PETRI_TRANSITIONS=120} [2022-10-17 10:40:21,376 INFO L287 CegarLoopForPetriNet]: 121 programPoint places, 1 predicate places. [2022-10-17 10:40:21,376 INFO L495 AbstractCegarLoop]: Abstraction has has 122 places, 120 transitions, 322 flow [2022-10-17 10:40:21,377 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 108.6) internal successors, (543), 5 states have internal predecessors, (543), 0 states have call successors, (0), 0 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 10:40:21,377 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-10-17 10:40:21,377 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:40:21,378 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-10-17 10:40:21,378 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-10-17 10:40:21,379 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:40:21,379 INFO L85 PathProgramCache]: Analyzing trace with hash 977453306, now seen corresponding path program 2 times [2022-10-17 10:40:21,379 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:40:21,379 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [653190697] [2022-10-17 10:40:21,379 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:40:21,380 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:40:21,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:40:22,061 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 10:40:22,061 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:40:22,061 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [653190697] [2022-10-17 10:40:22,063 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [653190697] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-17 10:40:22,063 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1756085838] [2022-10-17 10:40:22,063 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-10-17 10:40:22,063 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-17 10:40:22,064 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be858716-e7c4-42ab-80bb-ab7aba624e19/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 10:40:22,069 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be858716-e7c4-42ab-80bb-ab7aba624e19/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-17 10:40:22,093 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be858716-e7c4-42ab-80bb-ab7aba624e19/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-10-17 10:40:22,203 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-10-17 10:40:22,203 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-10-17 10:40:22,206 INFO L263 TraceCheckSpWp]: Trace formula consists of 268 conjuncts, 13 conjunts are in the unsatisfiable core [2022-10-17 10:40:22,216 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-17 10:40:22,560 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 10:40:22,561 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-17 10:40:22,926 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 10:40:22,927 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1756085838] provided 1 perfect and 1 imperfect interpolant sequences [2022-10-17 10:40:22,927 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-10-17 10:40:22,928 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [8, 8] total 18 [2022-10-17 10:40:22,928 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [513986229] [2022-10-17 10:40:22,929 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:40:22,930 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-10-17 10:40:22,930 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:40:22,931 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-10-17 10:40:22,933 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=233, Unknown=0, NotChecked=0, Total=306 [2022-10-17 10:40:22,938 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 90 out of 135 [2022-10-17 10:40:22,940 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 122 places, 120 transitions, 322 flow. Second operand has 8 states, 8 states have (on average 93.625) internal successors, (749), 8 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 10:40:22,940 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-10-17 10:40:22,940 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 90 of 135 [2022-10-17 10:40:22,940 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-10-17 10:40:24,553 INFO L130 PetriNetUnfolder]: 3984/7790 cut-off events. [2022-10-17 10:40:24,553 INFO L131 PetriNetUnfolder]: For 4952/5397 co-relation queries the response was YES. [2022-10-17 10:40:24,581 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17499 conditions, 7790 events. 3984/7790 cut-off events. For 4952/5397 co-relation queries the response was YES. Maximal size of possible extension queue 400. Compared 59476 event pairs, 507 based on Foata normal form. 193/7349 useless extension candidates. Maximal degree in co-relation 17491. Up to 1648 conditions per place. [2022-10-17 10:40:24,648 INFO L137 encePairwiseOnDemand]: 121/135 looper letters, 162 selfloop transitions, 42 changer transitions 0/279 dead transitions. [2022-10-17 10:40:24,648 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 134 places, 279 transitions, 1352 flow [2022-10-17 10:40:24,648 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-10-17 10:40:24,649 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2022-10-17 10:40:24,653 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1340 transitions. [2022-10-17 10:40:24,654 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.7635327635327636 [2022-10-17 10:40:24,655 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 1340 transitions. [2022-10-17 10:40:24,655 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 1340 transitions. [2022-10-17 10:40:24,656 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-10-17 10:40:24,656 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 1340 transitions. [2022-10-17 10:40:24,662 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 103.07692307692308) internal successors, (1340), 13 states have internal predecessors, (1340), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:40:24,668 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 135.0) internal successors, (1890), 14 states have internal predecessors, (1890), 0 states have call successors, (0), 0 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 10:40:24,669 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 135.0) internal successors, (1890), 14 states have internal predecessors, (1890), 0 states have call successors, (0), 0 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 10:40:24,670 INFO L175 Difference]: Start difference. First operand has 122 places, 120 transitions, 322 flow. Second operand 13 states and 1340 transitions. [2022-10-17 10:40:24,670 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 134 places, 279 transitions, 1352 flow [2022-10-17 10:40:24,677 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 132 places, 279 transitions, 1306 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-10-17 10:40:24,682 INFO L231 Difference]: Finished difference. Result has 141 places, 157 transitions, 638 flow [2022-10-17 10:40:24,683 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=135, PETRI_DIFFERENCE_MINUEND_FLOW=312, PETRI_DIFFERENCE_MINUEND_PLACES=120, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=120, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=104, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=638, PETRI_PLACES=141, PETRI_TRANSITIONS=157} [2022-10-17 10:40:24,684 INFO L287 CegarLoopForPetriNet]: 121 programPoint places, 20 predicate places. [2022-10-17 10:40:24,684 INFO L495 AbstractCegarLoop]: Abstraction has has 141 places, 157 transitions, 638 flow [2022-10-17 10:40:24,685 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 93.625) internal successors, (749), 8 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 10:40:24,685 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-10-17 10:40:24,685 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:40:24,724 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be858716-e7c4-42ab-80bb-ab7aba624e19/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-10-17 10:40:24,912 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be858716-e7c4-42ab-80bb-ab7aba624e19/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-17 10:40:24,912 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-10-17 10:40:24,913 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:40:24,913 INFO L85 PathProgramCache]: Analyzing trace with hash -1844269532, now seen corresponding path program 1 times [2022-10-17 10:40:24,913 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:40:24,914 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [873190386] [2022-10-17 10:40:24,914 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:40:24,914 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:40:24,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:40:25,327 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 10:40:25,328 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:40:25,328 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [873190386] [2022-10-17 10:40:25,328 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [873190386] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:40:25,328 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:40:25,329 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-10-17 10:40:25,329 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1099518809] [2022-10-17 10:40:25,329 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:40:25,330 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-10-17 10:40:25,330 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:40:25,330 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-10-17 10:40:25,330 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-10-17 10:40:25,331 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 105 out of 135 [2022-10-17 10:40:25,332 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 141 places, 157 transitions, 638 flow. Second operand has 5 states, 5 states have (on average 108.6) internal successors, (543), 5 states have internal predecessors, (543), 0 states have call successors, (0), 0 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 10:40:25,332 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-10-17 10:40:25,333 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 105 of 135 [2022-10-17 10:40:25,333 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-10-17 10:40:26,798 INFO L130 PetriNetUnfolder]: 3238/7463 cut-off events. [2022-10-17 10:40:26,798 INFO L131 PetriNetUnfolder]: For 11449/12045 co-relation queries the response was YES. [2022-10-17 10:40:26,849 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20762 conditions, 7463 events. 3238/7463 cut-off events. For 11449/12045 co-relation queries the response was YES. Maximal size of possible extension queue 448. Compared 65101 event pairs, 478 based on Foata normal form. 142/7128 useless extension candidates. Maximal degree in co-relation 20746. Up to 2284 conditions per place. [2022-10-17 10:40:26,927 INFO L137 encePairwiseOnDemand]: 125/135 looper letters, 119 selfloop transitions, 22 changer transitions 0/237 dead transitions. [2022-10-17 10:40:26,928 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 146 places, 237 transitions, 1395 flow [2022-10-17 10:40:26,928 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-10-17 10:40:26,928 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-10-17 10:40:26,932 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 690 transitions. [2022-10-17 10:40:26,932 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8518518518518519 [2022-10-17 10:40:26,933 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 690 transitions. [2022-10-17 10:40:26,933 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 690 transitions. [2022-10-17 10:40:26,934 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-10-17 10:40:26,934 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 690 transitions. [2022-10-17 10:40:26,936 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 115.0) internal successors, (690), 6 states have internal predecessors, (690), 0 states have call successors, (0), 0 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 10:40:26,939 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 135.0) internal successors, (945), 7 states have internal predecessors, (945), 0 states have call successors, (0), 0 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 10:40:26,940 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 135.0) internal successors, (945), 7 states have internal predecessors, (945), 0 states have call successors, (0), 0 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 10:40:26,940 INFO L175 Difference]: Start difference. First operand has 141 places, 157 transitions, 638 flow. Second operand 6 states and 690 transitions. [2022-10-17 10:40:26,940 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 146 places, 237 transitions, 1395 flow [2022-10-17 10:40:27,029 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 144 places, 237 transitions, 1391 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-10-17 10:40:27,035 INFO L231 Difference]: Finished difference. Result has 147 places, 167 transitions, 780 flow [2022-10-17 10:40:27,036 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=135, PETRI_DIFFERENCE_MINUEND_FLOW=634, PETRI_DIFFERENCE_MINUEND_PLACES=139, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=157, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=135, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=780, PETRI_PLACES=147, PETRI_TRANSITIONS=167} [2022-10-17 10:40:27,039 INFO L287 CegarLoopForPetriNet]: 121 programPoint places, 26 predicate places. [2022-10-17 10:40:27,039 INFO L495 AbstractCegarLoop]: Abstraction has has 147 places, 167 transitions, 780 flow [2022-10-17 10:40:27,040 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 108.6) internal successors, (543), 5 states have internal predecessors, (543), 0 states have call successors, (0), 0 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 10:40:27,040 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-10-17 10:40:27,040 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:40:27,040 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-10-17 10:40:27,041 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-10-17 10:40:27,041 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:40:27,041 INFO L85 PathProgramCache]: Analyzing trace with hash 997030362, now seen corresponding path program 3 times [2022-10-17 10:40:27,042 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:40:27,042 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [914002025] [2022-10-17 10:40:27,043 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:40:27,043 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:40:27,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:40:27,704 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 10:40:27,705 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:40:27,705 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [914002025] [2022-10-17 10:40:27,705 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [914002025] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-17 10:40:27,705 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1029687972] [2022-10-17 10:40:27,706 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-10-17 10:40:27,706 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-17 10:40:27,706 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be858716-e7c4-42ab-80bb-ab7aba624e19/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 10:40:27,707 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be858716-e7c4-42ab-80bb-ab7aba624e19/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-17 10:40:27,748 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be858716-e7c4-42ab-80bb-ab7aba624e19/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-10-17 10:40:27,857 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-10-17 10:40:27,857 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-10-17 10:40:27,859 INFO L263 TraceCheckSpWp]: Trace formula consists of 268 conjuncts, 17 conjunts are in the unsatisfiable core [2022-10-17 10:40:27,865 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-17 10:40:28,248 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 10:40:28,249 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-17 10:40:28,698 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 10:40:28,699 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1029687972] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-17 10:40:28,699 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-17 10:40:28,699 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 11, 11] total 26 [2022-10-17 10:40:28,700 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [166664604] [2022-10-17 10:40:28,700 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-17 10:40:28,701 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-10-17 10:40:28,705 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:40:28,706 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-10-17 10:40:28,706 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=156, Invalid=494, Unknown=0, NotChecked=0, Total=650 [2022-10-17 10:40:28,709 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 90 out of 135 [2022-10-17 10:40:28,713 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 147 places, 167 transitions, 780 flow. Second operand has 26 states, 26 states have (on average 92.5) internal successors, (2405), 26 states have internal predecessors, (2405), 0 states have call successors, (0), 0 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 10:40:28,713 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-10-17 10:40:28,713 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 90 of 135 [2022-10-17 10:40:28,713 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-10-17 10:40:43,522 INFO L130 PetriNetUnfolder]: 32473/64405 cut-off events. [2022-10-17 10:40:43,522 INFO L131 PetriNetUnfolder]: For 113774/119658 co-relation queries the response was YES. [2022-10-17 10:40:43,949 INFO L83 FinitePrefix]: Finished finitePrefix Result has 197235 conditions, 64405 events. 32473/64405 cut-off events. For 113774/119658 co-relation queries the response was YES. Maximal size of possible extension queue 3384. Compared 715300 event pairs, 1542 based on Foata normal form. 2517/63779 useless extension candidates. Maximal degree in co-relation 197215. Up to 15076 conditions per place. [2022-10-17 10:40:44,586 INFO L137 encePairwiseOnDemand]: 116/135 looper letters, 766 selfloop transitions, 642 changer transitions 1/1491 dead transitions. [2022-10-17 10:40:44,587 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 221 places, 1491 transitions, 11863 flow [2022-10-17 10:40:44,587 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 75 states. [2022-10-17 10:40:44,587 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 75 states. [2022-10-17 10:40:44,612 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 7659 transitions. [2022-10-17 10:40:44,616 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.7564444444444445 [2022-10-17 10:40:44,616 INFO L72 ComplementDD]: Start complementDD. Operand 75 states and 7659 transitions. [2022-10-17 10:40:44,616 INFO L73 IsDeterministic]: Start isDeterministic. Operand 75 states and 7659 transitions. [2022-10-17 10:40:44,624 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-10-17 10:40:44,624 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 75 states and 7659 transitions. [2022-10-17 10:40:44,651 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 76 states, 75 states have (on average 102.12) internal successors, (7659), 75 states have internal predecessors, (7659), 0 states have call successors, (0), 0 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 10:40:44,680 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 76 states, 76 states have (on average 135.0) internal successors, (10260), 76 states have internal predecessors, (10260), 0 states have call successors, (0), 0 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 10:40:44,685 INFO L81 ComplementDD]: Finished complementDD. Result has 76 states, 76 states have (on average 135.0) internal successors, (10260), 76 states have internal predecessors, (10260), 0 states have call successors, (0), 0 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 10:40:44,685 INFO L175 Difference]: Start difference. First operand has 147 places, 167 transitions, 780 flow. Second operand 75 states and 7659 transitions. [2022-10-17 10:40:44,686 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 221 places, 1491 transitions, 11863 flow [2022-10-17 10:40:46,048 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 219 places, 1491 transitions, 11638 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-10-17 10:40:46,076 INFO L231 Difference]: Finished difference. Result has 269 places, 893 transitions, 8543 flow [2022-10-17 10:40:46,076 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=135, PETRI_DIFFERENCE_MINUEND_FLOW=761, PETRI_DIFFERENCE_MINUEND_PLACES=145, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=167, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=49, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=104, PETRI_DIFFERENCE_SUBTRAHEND_STATES=75, PETRI_FLOW=8543, PETRI_PLACES=269, PETRI_TRANSITIONS=893} [2022-10-17 10:40:46,077 INFO L287 CegarLoopForPetriNet]: 121 programPoint places, 148 predicate places. [2022-10-17 10:40:46,077 INFO L495 AbstractCegarLoop]: Abstraction has has 269 places, 893 transitions, 8543 flow [2022-10-17 10:40:46,079 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 92.5) internal successors, (2405), 26 states have internal predecessors, (2405), 0 states have call successors, (0), 0 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 10:40:46,079 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-10-17 10:40:46,079 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:40:46,115 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be858716-e7c4-42ab-80bb-ab7aba624e19/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0