./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/weaver/popl20-more-array-sum-alt.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version b2eff8ba Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dab0c62-9365-4979-9b8e-ad52ca18d8a1/bin/uautomizer-UnR33cPsHg/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dab0c62-9365-4979-9b8e-ad52ca18d8a1/bin/uautomizer-UnR33cPsHg/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dab0c62-9365-4979-9b8e-ad52ca18d8a1/bin/uautomizer-UnR33cPsHg/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dab0c62-9365-4979-9b8e-ad52ca18d8a1/bin/uautomizer-UnR33cPsHg/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/popl20-more-array-sum-alt.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dab0c62-9365-4979-9b8e-ad52ca18d8a1/bin/uautomizer-UnR33cPsHg/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dab0c62-9365-4979-9b8e-ad52ca18d8a1/bin/uautomizer-UnR33cPsHg --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 3a95f2ef87fd1cf5c8213f05c50508f1a1765fc5482d62813e9c15181aaf2ab6 .................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.1-dev-b2eff8b [2021-10-28 09:17:39,850 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-28 09:17:39,855 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-28 09:17:39,917 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-28 09:17:39,922 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-28 09:17:39,930 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-28 09:17:39,934 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-28 09:17:39,940 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-28 09:17:39,944 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-28 09:17:39,952 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-28 09:17:39,953 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-28 09:17:39,956 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-28 09:17:39,956 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-28 09:17:39,960 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-28 09:17:39,962 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-28 09:17:39,966 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-28 09:17:39,968 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-28 09:17:39,970 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-28 09:17:39,976 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-28 09:17:39,986 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-28 09:17:39,989 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-28 09:17:39,991 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-28 09:17:39,995 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-28 09:17:39,996 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-28 09:17:40,001 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-28 09:17:40,002 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-28 09:17:40,002 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-28 09:17:40,005 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-28 09:17:40,006 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-28 09:17:40,008 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-28 09:17:40,008 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-28 09:17:40,009 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-28 09:17:40,012 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-28 09:17:40,014 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-28 09:17:40,016 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-28 09:17:40,016 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-28 09:17:40,017 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-28 09:17:40,018 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-28 09:17:40,018 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-28 09:17:40,019 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-28 09:17:40,020 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-28 09:17:40,022 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dab0c62-9365-4979-9b8e-ad52ca18d8a1/bin/uautomizer-UnR33cPsHg/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-10-28 09:17:40,074 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-28 09:17:40,075 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-28 09:17:40,075 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-28 09:17:40,076 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-28 09:17:40,085 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-28 09:17:40,086 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-28 09:17:40,086 INFO L138 SettingsManager]: * Use SBE=true [2021-10-28 09:17:40,087 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-28 09:17:40,087 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-28 09:17:40,087 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-28 09:17:40,089 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-28 09:17:40,089 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-28 09:17:40,089 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-28 09:17:40,090 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-28 09:17:40,090 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-28 09:17:40,090 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-28 09:17:40,090 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-28 09:17:40,091 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-28 09:17:40,091 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-28 09:17:40,091 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-28 09:17:40,092 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-28 09:17:40,092 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-28 09:17:40,092 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-28 09:17:40,092 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-28 09:17:40,093 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-28 09:17:40,093 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-28 09:17:40,093 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-10-28 09:17:40,094 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-28 09:17:40,094 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-10-28 09:17:40,096 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-10-28 09:17:40,096 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-28 09:17:40,096 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-28 09:17:40,097 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_1dab0c62-9365-4979-9b8e-ad52ca18d8a1/bin/uautomizer-UnR33cPsHg/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dab0c62-9365-4979-9b8e-ad52ca18d8a1/bin/uautomizer-UnR33cPsHg Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3a95f2ef87fd1cf5c8213f05c50508f1a1765fc5482d62813e9c15181aaf2ab6 [2021-10-28 09:17:40,482 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-28 09:17:40,507 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-28 09:17:40,510 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-28 09:17:40,512 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-28 09:17:40,513 INFO L275 PluginConnector]: CDTParser initialized [2021-10-28 09:17:40,514 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dab0c62-9365-4979-9b8e-ad52ca18d8a1/bin/uautomizer-UnR33cPsHg/../../sv-benchmarks/c/weaver/popl20-more-array-sum-alt.wvr.c [2021-10-28 09:17:40,614 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dab0c62-9365-4979-9b8e-ad52ca18d8a1/bin/uautomizer-UnR33cPsHg/data/3a3d0f1c1/74a8dfe832a24641a0608ffe26f316a1/FLAG0fe01466b [2021-10-28 09:17:41,137 INFO L306 CDTParser]: Found 1 translation units. [2021-10-28 09:17:41,138 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dab0c62-9365-4979-9b8e-ad52ca18d8a1/sv-benchmarks/c/weaver/popl20-more-array-sum-alt.wvr.c [2021-10-28 09:17:41,148 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dab0c62-9365-4979-9b8e-ad52ca18d8a1/bin/uautomizer-UnR33cPsHg/data/3a3d0f1c1/74a8dfe832a24641a0608ffe26f316a1/FLAG0fe01466b [2021-10-28 09:17:41,486 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dab0c62-9365-4979-9b8e-ad52ca18d8a1/bin/uautomizer-UnR33cPsHg/data/3a3d0f1c1/74a8dfe832a24641a0608ffe26f316a1 [2021-10-28 09:17:41,489 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-28 09:17:41,491 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-28 09:17:41,501 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-28 09:17:41,501 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-28 09:17:41,516 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-28 09:17:41,517 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 09:17:41" (1/1) ... [2021-10-28 09:17:41,519 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2206a8fc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:17:41, skipping insertion in model container [2021-10-28 09:17:41,519 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 09:17:41" (1/1) ... [2021-10-28 09:17:41,527 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-28 09:17:41,559 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-28 09:17:41,805 WARN L228 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_1dab0c62-9365-4979-9b8e-ad52ca18d8a1/sv-benchmarks/c/weaver/popl20-more-array-sum-alt.wvr.c[2761,2774] [2021-10-28 09:17:41,817 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-28 09:17:41,828 INFO L203 MainTranslator]: Completed pre-run [2021-10-28 09:17:41,857 WARN L228 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_1dab0c62-9365-4979-9b8e-ad52ca18d8a1/sv-benchmarks/c/weaver/popl20-more-array-sum-alt.wvr.c[2761,2774] [2021-10-28 09:17:41,863 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-28 09:17:41,887 INFO L208 MainTranslator]: Completed translation [2021-10-28 09:17:41,888 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:17:41 WrapperNode [2021-10-28 09:17:41,888 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-28 09:17:41,889 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-28 09:17:41,889 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-28 09:17:41,890 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-28 09:17:41,908 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:17:41" (1/1) ... [2021-10-28 09:17:41,935 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:17:41" (1/1) ... [2021-10-28 09:17:41,974 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-28 09:17:41,978 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-28 09:17:41,978 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-28 09:17:41,978 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-28 09:17:41,989 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:17:41" (1/1) ... [2021-10-28 09:17:41,989 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:17:41" (1/1) ... [2021-10-28 09:17:41,993 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:17:41" (1/1) ... [2021-10-28 09:17:41,994 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:17:41" (1/1) ... [2021-10-28 09:17:42,005 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:17:41" (1/1) ... [2021-10-28 09:17:42,011 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:17:41" (1/1) ... [2021-10-28 09:17:42,014 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:17:41" (1/1) ... [2021-10-28 09:17:42,019 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-28 09:17:42,020 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-28 09:17:42,021 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-28 09:17:42,021 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-28 09:17:42,022 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:17:41" (1/1) ... [2021-10-28 09:17:42,032 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-28 09:17:42,054 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dab0c62-9365-4979-9b8e-ad52ca18d8a1/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:17:42,084 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dab0c62-9365-4979-9b8e-ad52ca18d8a1/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-28 09:17:42,126 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dab0c62-9365-4979-9b8e-ad52ca18d8a1/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-28 09:17:42,168 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2021-10-28 09:17:42,169 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2021-10-28 09:17:42,169 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2021-10-28 09:17:42,169 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2021-10-28 09:17:42,169 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2021-10-28 09:17:42,170 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2021-10-28 09:17:42,170 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-28 09:17:42,170 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-28 09:17:42,170 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-10-28 09:17:42,171 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-10-28 09:17:42,171 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-10-28 09:17:42,172 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-10-28 09:17:42,173 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-28 09:17:42,173 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-28 09:17:42,173 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-10-28 09:17:42,173 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-28 09:17:42,175 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-10-28 09:17:43,371 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-28 09:17:43,371 INFO L299 CfgBuilder]: Removed 36 assume(true) statements. [2021-10-28 09:17:43,374 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 09:17:43 BoogieIcfgContainer [2021-10-28 09:17:43,375 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-28 09:17:43,377 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-28 09:17:43,377 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-28 09:17:43,390 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-28 09:17:43,390 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.10 09:17:41" (1/3) ... [2021-10-28 09:17:43,391 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@53001f29 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 09:17:43, skipping insertion in model container [2021-10-28 09:17:43,391 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:17:41" (2/3) ... [2021-10-28 09:17:43,392 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@53001f29 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 09:17:43, skipping insertion in model container [2021-10-28 09:17:43,392 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 09:17:43" (3/3) ... [2021-10-28 09:17:43,394 INFO L111 eAbstractionObserver]: Analyzing ICFG popl20-more-array-sum-alt.wvr.c [2021-10-28 09:17:43,403 WARN L149 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-10-28 09:17:43,403 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-28 09:17:43,403 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-10-28 09:17:43,403 INFO L513 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-10-28 09:17:43,445 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:17:43,445 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:17:43,445 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:17:43,446 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:17:43,446 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:17:43,446 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:17:43,446 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:17:43,447 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:17:43,447 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:17:43,447 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:17:43,447 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:17:43,447 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_plus_~a not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:17:43,448 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:17:43,448 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_plus_~b not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:17:43,448 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_plus_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:17:43,448 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~ret5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:17:43,448 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~tmp~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:17:43,449 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:17:43,449 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:17:43,449 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_plus_#in~a| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:17:43,449 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_plus_#in~b| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:17:43,450 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:17:43,450 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_plus_~a not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:17:43,450 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:17:43,450 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_plus_~b not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:17:43,450 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_plus_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:17:43,450 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~ret5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:17:43,451 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~tmp~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:17:43,451 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:17:43,451 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:17:43,451 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_plus_#in~a| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:17:43,451 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_plus_#in~b| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:17:43,455 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~tmp~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:17:43,455 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~tmp~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:17:43,456 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:17:43,456 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:17:43,456 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:17:43,456 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:17:43,456 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:17:43,457 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:17:43,457 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:17:43,457 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:17:43,457 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:17:43,457 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:17:43,458 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork2_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:17:43,458 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork2_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:17:43,458 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork2_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:17:43,459 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork2_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:17:43,459 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork2_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:17:43,459 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork2_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:17:43,459 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:17:43,460 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:17:43,460 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:17:43,460 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:17:43,460 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork2_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:17:43,460 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork2_plus_~b not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:17:43,461 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork2_plus_~a not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:17:43,461 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_plus_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:17:43,461 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:17:43,461 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork2_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:17:43,461 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork2_~tmp~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:17:43,462 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~ret8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:17:43,462 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~mem7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:17:43,462 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_plus_#in~b| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:17:43,462 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_plus_#in~a| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:17:43,462 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork2_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:17:43,463 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork2_plus_~b not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:17:43,463 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork2_plus_~a not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:17:43,463 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_plus_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:17:43,463 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:17:43,463 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork2_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:17:43,464 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork2_~tmp~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:17:43,464 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~ret8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:17:43,464 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~mem7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:17:43,464 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_plus_#in~b| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:17:43,464 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_plus_#in~a| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:17:43,465 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork2_~tmp~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:17:43,465 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork2_~tmp~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:17:43,465 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork2_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:17:43,465 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:17:43,466 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork2_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:17:43,466 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:17:43,466 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:17:43,466 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork2_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:17:43,467 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:17:43,467 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork2_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:17:43,467 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:17:43,467 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:17:43,468 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork0_~i~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:17:43,468 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork0_~i~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:17:43,468 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork0_~i~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:17:43,468 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork0_~i~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:17:43,469 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork0_~i~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:17:43,469 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork0_~i~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:17:43,469 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:17:43,469 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:17:43,470 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:17:43,470 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:17:43,470 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork0_~i~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:17:43,470 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~mem10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:17:43,470 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork0_plus_~b not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:17:43,471 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork0_plus_~a not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:17:43,471 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_plus_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:17:43,471 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork0_~tmp~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:17:43,471 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:17:43,471 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:17:43,471 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_plus_#in~b| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:17:43,472 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_plus_#in~a| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:17:43,472 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~ret11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:17:43,472 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork0_~i~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:17:43,472 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~mem10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:17:43,473 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork0_plus_~b not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:17:43,473 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork0_plus_~a not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:17:43,473 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_plus_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:17:43,473 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork0_~tmp~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:17:43,473 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:17:43,473 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:17:43,474 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_plus_#in~b| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:17:43,474 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_plus_#in~a| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:17:43,474 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~ret11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:17:43,474 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork0_~tmp~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:17:43,475 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork0_~tmp~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:17:43,475 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork0_~i~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:17:43,475 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~post9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:17:43,475 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork0_~i~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:17:43,475 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~post9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:17:43,476 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~post9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:17:43,476 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork0_~i~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:17:43,476 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~post9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:17:43,476 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork0_~i~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:17:43,477 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~post9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:17:43,477 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~post9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:17:43,480 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~mem10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:17:43,481 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~ret11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:17:43,481 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork0_~i~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:17:43,481 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:17:43,482 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork0_plus_~a not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:17:43,482 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:17:43,482 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork0_plus_~b not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:17:43,482 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:17:43,483 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_plus_#in~a| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:17:43,483 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork0_~tmp~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:17:43,483 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_plus_#in~b| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:17:43,483 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:17:43,484 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~post9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:17:43,484 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_plus_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:17:43,486 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~ret5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:17:43,487 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~tmp~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:17:43,487 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:17:43,487 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:17:43,488 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:17:43,488 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:17:43,488 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:17:43,488 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:17:43,489 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_plus_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:17:43,489 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:17:43,489 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_plus_~b not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:17:43,490 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_plus_~a not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:17:43,490 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_plus_#in~b| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:17:43,490 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_plus_#in~a| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:17:43,492 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_plus_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:17:43,492 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~ret8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:17:43,493 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_plus_#in~b| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:17:43,493 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork2_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:17:43,493 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork2_~tmp~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:17:43,494 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_plus_#in~a| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:17:43,494 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:17:43,494 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~mem7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:17:43,494 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork2_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:17:43,495 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:17:43,495 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:17:43,495 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork2_plus_~b not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:17:43,495 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork2_plus_~a not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:17:43,496 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:17:43,505 INFO L148 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2021-10-28 09:17:43,566 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-28 09:17:43,574 INFO L339 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, mLoopAccelerationTechnique=FAST_UPR [2021-10-28 09:17:43,575 INFO L340 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2021-10-28 09:17:43,599 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 140 places, 142 transitions, 308 flow [2021-10-28 09:17:43,713 INFO L129 PetriNetUnfolder]: 12/139 cut-off events. [2021-10-28 09:17:43,715 INFO L130 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2021-10-28 09:17:43,723 INFO L84 FinitePrefix]: Finished finitePrefix Result has 152 conditions, 139 events. 12/139 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 95 event pairs, 0 based on Foata normal form. 0/126 useless extension candidates. Maximal degree in co-relation 103. Up to 2 conditions per place. [2021-10-28 09:17:43,723 INFO L82 GeneralOperation]: Start removeDead. Operand has 140 places, 142 transitions, 308 flow [2021-10-28 09:17:43,741 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 127 places, 129 transitions, 276 flow [2021-10-28 09:17:43,810 INFO L129 PetriNetUnfolder]: 12/128 cut-off events. [2021-10-28 09:17:43,811 INFO L130 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2021-10-28 09:17:43,811 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-28 09:17:43,812 INFO L254 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] [2021-10-28 09:17:43,812 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-10-28 09:17:43,819 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:17:43,819 INFO L85 PathProgramCache]: Analyzing trace with hash -627882463, now seen corresponding path program 1 times [2021-10-28 09:17:43,831 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:17:43,832 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [370770862] [2021-10-28 09:17:43,832 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:17:43,833 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:17:43,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:17:44,088 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:17:44,089 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:17:44,090 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [370770862] [2021-10-28 09:17:44,090 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [370770862] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 09:17:44,091 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 09:17:44,091 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-28 09:17:44,093 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [929780738] [2021-10-28 09:17:44,105 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-10-28 09:17:44,105 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:17:44,121 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-10-28 09:17:44,123 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-28 09:17:44,125 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 133 out of 142 [2021-10-28 09:17:44,130 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 127 places, 129 transitions, 276 flow. Second operand has 2 states, 2 states have (on average 134.5) internal successors, (269), 2 states have internal predecessors, (269), 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) [2021-10-28 09:17:44,130 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-28 09:17:44,130 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 133 of 142 [2021-10-28 09:17:44,132 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-28 09:17:44,168 INFO L129 PetriNetUnfolder]: 4/121 cut-off events. [2021-10-28 09:17:44,168 INFO L130 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2021-10-28 09:17:44,170 INFO L84 FinitePrefix]: Finished finitePrefix Result has 135 conditions, 121 events. 4/121 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 87 event pairs, 0 based on Foata normal form. 8/121 useless extension candidates. Maximal degree in co-relation 130. Up to 2 conditions per place. [2021-10-28 09:17:44,172 INFO L132 encePairwiseOnDemand]: 134/142 looper letters, 0 selfloop transitions, 0 changer transitions 4/121 dead transitions. [2021-10-28 09:17:44,172 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 128 places, 121 transitions, 260 flow [2021-10-28 09:17:44,172 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-10-28 09:17:44,175 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2021-10-28 09:17:44,185 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 274 transitions. [2021-10-28 09:17:44,188 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.9647887323943662 [2021-10-28 09:17:44,189 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 274 transitions. [2021-10-28 09:17:44,190 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 274 transitions. [2021-10-28 09:17:44,192 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-28 09:17:44,195 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 274 transitions. [2021-10-28 09:17:44,200 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 137.0) internal successors, (274), 2 states have internal predecessors, (274), 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) [2021-10-28 09:17:44,206 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 142.0) internal successors, (426), 3 states have internal predecessors, (426), 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) [2021-10-28 09:17:44,207 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 142.0) internal successors, (426), 3 states have internal predecessors, (426), 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) [2021-10-28 09:17:44,209 INFO L186 Difference]: Start difference. First operand has 127 places, 129 transitions, 276 flow. Second operand 2 states and 274 transitions. [2021-10-28 09:17:44,211 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 128 places, 121 transitions, 260 flow [2021-10-28 09:17:44,216 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 122 places, 121 transitions, 248 flow, removed 0 selfloop flow, removed 6 redundant places. [2021-10-28 09:17:44,221 INFO L242 Difference]: Finished difference. Result has 122 places, 117 transitions, 240 flow [2021-10-28 09:17:44,224 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=142, PETRI_DIFFERENCE_MINUEND_FLOW=248, PETRI_DIFFERENCE_MINUEND_PLACES=121, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=121, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=121, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=240, PETRI_PLACES=122, PETRI_TRANSITIONS=117} [2021-10-28 09:17:44,225 INFO L334 CegarLoopForPetriNet]: 127 programPoint places, -5 predicate places. [2021-10-28 09:17:44,225 INFO L470 AbstractCegarLoop]: Abstraction has has 122 places, 117 transitions, 240 flow [2021-10-28 09:17:44,226 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 134.5) internal successors, (269), 2 states have internal predecessors, (269), 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) [2021-10-28 09:17:44,226 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-28 09:17:44,226 INFO L254 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] [2021-10-28 09:17:44,227 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-28 09:17:44,227 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-10-28 09:17:44,228 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:17:44,228 INFO L85 PathProgramCache]: Analyzing trace with hash 1612778562, now seen corresponding path program 1 times [2021-10-28 09:17:44,228 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:17:44,229 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1895865755] [2021-10-28 09:17:44,229 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:17:44,229 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:17:44,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:17:44,541 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:17:44,542 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:17:44,542 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1895865755] [2021-10-28 09:17:44,543 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1895865755] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 09:17:44,543 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 09:17:44,543 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-10-28 09:17:44,543 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1851750705] [2021-10-28 09:17:44,545 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-28 09:17:44,546 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:17:44,547 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-28 09:17:44,547 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-10-28 09:17:44,551 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 105 out of 142 [2021-10-28 09:17:44,553 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 122 places, 117 transitions, 240 flow. Second operand has 6 states, 6 states have (on average 108.0) internal successors, (648), 6 states have internal predecessors, (648), 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) [2021-10-28 09:17:44,553 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-28 09:17:44,553 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 105 of 142 [2021-10-28 09:17:44,553 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-28 09:17:44,808 INFO L129 PetriNetUnfolder]: 91/390 cut-off events. [2021-10-28 09:17:44,808 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-10-28 09:17:44,812 INFO L84 FinitePrefix]: Finished finitePrefix Result has 547 conditions, 390 events. 91/390 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 1622 event pairs, 23 based on Foata normal form. 1/352 useless extension candidates. Maximal degree in co-relation 544. Up to 71 conditions per place. [2021-10-28 09:17:44,816 INFO L132 encePairwiseOnDemand]: 134/142 looper letters, 34 selfloop transitions, 6 changer transitions 3/136 dead transitions. [2021-10-28 09:17:44,817 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 123 places, 136 transitions, 364 flow [2021-10-28 09:17:44,817 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-28 09:17:44,818 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2021-10-28 09:17:44,822 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 674 transitions. [2021-10-28 09:17:44,824 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7910798122065728 [2021-10-28 09:17:44,824 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 674 transitions. [2021-10-28 09:17:44,824 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 674 transitions. [2021-10-28 09:17:44,826 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-28 09:17:44,826 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 674 transitions. [2021-10-28 09:17:44,831 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 112.33333333333333) internal successors, (674), 6 states have internal predecessors, (674), 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) [2021-10-28 09:17:44,836 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 142.0) internal successors, (994), 7 states have internal predecessors, (994), 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) [2021-10-28 09:17:44,837 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 142.0) internal successors, (994), 7 states have internal predecessors, (994), 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) [2021-10-28 09:17:44,838 INFO L186 Difference]: Start difference. First operand has 122 places, 117 transitions, 240 flow. Second operand 6 states and 674 transitions. [2021-10-28 09:17:44,838 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 123 places, 136 transitions, 364 flow [2021-10-28 09:17:44,840 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 123 places, 136 transitions, 364 flow, removed 0 selfloop flow, removed 0 redundant places. [2021-10-28 09:17:44,846 INFO L242 Difference]: Finished difference. Result has 126 places, 121 transitions, 276 flow [2021-10-28 09:17:44,847 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=142, PETRI_DIFFERENCE_MINUEND_FLOW=240, PETRI_DIFFERENCE_MINUEND_PLACES=118, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=117, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=112, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=276, PETRI_PLACES=126, PETRI_TRANSITIONS=121} [2021-10-28 09:17:44,848 INFO L334 CegarLoopForPetriNet]: 127 programPoint places, -1 predicate places. [2021-10-28 09:17:44,848 INFO L470 AbstractCegarLoop]: Abstraction has has 126 places, 121 transitions, 276 flow [2021-10-28 09:17:44,849 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 108.0) internal successors, (648), 6 states have internal predecessors, (648), 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) [2021-10-28 09:17:44,849 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-28 09:17:44,850 INFO L254 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] [2021-10-28 09:17:44,850 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-10-28 09:17:44,851 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-10-28 09:17:44,851 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:17:44,852 INFO L85 PathProgramCache]: Analyzing trace with hash 1391453662, now seen corresponding path program 1 times [2021-10-28 09:17:44,852 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:17:44,852 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [570486408] [2021-10-28 09:17:44,853 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:17:44,853 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:17:44,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:17:45,039 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:17:45,039 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:17:45,040 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [570486408] [2021-10-28 09:17:45,040 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [570486408] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 09:17:45,040 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 09:17:45,040 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-10-28 09:17:45,041 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [710429539] [2021-10-28 09:17:45,041 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-28 09:17:45,042 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:17:45,042 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-28 09:17:45,043 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-10-28 09:17:45,046 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 109 out of 142 [2021-10-28 09:17:45,048 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 126 places, 121 transitions, 276 flow. Second operand has 7 states, 7 states have (on average 111.71428571428571) internal successors, (782), 7 states have internal predecessors, (782), 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) [2021-10-28 09:17:45,048 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-28 09:17:45,048 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 109 of 142 [2021-10-28 09:17:45,048 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-28 09:17:45,356 INFO L129 PetriNetUnfolder]: 119/591 cut-off events. [2021-10-28 09:17:45,356 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-10-28 09:17:45,364 INFO L84 FinitePrefix]: Finished finitePrefix Result has 853 conditions, 591 events. 119/591 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 50. Compared 3316 event pairs, 50 based on Foata normal form. 0/492 useless extension candidates. Maximal degree in co-relation 846. Up to 142 conditions per place. [2021-10-28 09:17:45,370 INFO L132 encePairwiseOnDemand]: 133/142 looper letters, 29 selfloop transitions, 8 changer transitions 0/134 dead transitions. [2021-10-28 09:17:45,371 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 131 places, 134 transitions, 377 flow [2021-10-28 09:17:45,372 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-28 09:17:45,372 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-10-28 09:17:45,377 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 910 transitions. [2021-10-28 09:17:45,378 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.801056338028169 [2021-10-28 09:17:45,378 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 910 transitions. [2021-10-28 09:17:45,378 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 910 transitions. [2021-10-28 09:17:45,380 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-28 09:17:45,380 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 910 transitions. [2021-10-28 09:17:45,384 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 113.75) internal successors, (910), 8 states have internal predecessors, (910), 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) [2021-10-28 09:17:45,389 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 142.0) internal successors, (1278), 9 states have internal predecessors, (1278), 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) [2021-10-28 09:17:45,391 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 142.0) internal successors, (1278), 9 states have internal predecessors, (1278), 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) [2021-10-28 09:17:45,391 INFO L186 Difference]: Start difference. First operand has 126 places, 121 transitions, 276 flow. Second operand 8 states and 910 transitions. [2021-10-28 09:17:45,392 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 131 places, 134 transitions, 377 flow [2021-10-28 09:17:45,397 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 129 places, 134 transitions, 373 flow, removed 2 selfloop flow, removed 2 redundant places. [2021-10-28 09:17:45,404 INFO L242 Difference]: Finished difference. Result has 132 places, 124 transitions, 308 flow [2021-10-28 09:17:45,405 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=142, PETRI_DIFFERENCE_MINUEND_FLOW=272, PETRI_DIFFERENCE_MINUEND_PLACES=122, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=121, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=113, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=308, PETRI_PLACES=132, PETRI_TRANSITIONS=124} [2021-10-28 09:17:45,406 INFO L334 CegarLoopForPetriNet]: 127 programPoint places, 5 predicate places. [2021-10-28 09:17:45,407 INFO L470 AbstractCegarLoop]: Abstraction has has 132 places, 124 transitions, 308 flow [2021-10-28 09:17:45,408 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 111.71428571428571) internal successors, (782), 7 states have internal predecessors, (782), 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) [2021-10-28 09:17:45,408 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-28 09:17:45,408 INFO L254 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] [2021-10-28 09:17:45,409 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-10-28 09:17:45,412 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-10-28 09:17:45,414 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:17:45,414 INFO L85 PathProgramCache]: Analyzing trace with hash -284533446, now seen corresponding path program 1 times [2021-10-28 09:17:45,414 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:17:45,415 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1036876391] [2021-10-28 09:17:45,415 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:17:45,415 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:17:45,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:17:46,031 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:17:46,034 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:17:46,034 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1036876391] [2021-10-28 09:17:46,035 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1036876391] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 09:17:46,035 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 09:17:46,035 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-10-28 09:17:46,036 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [187327037] [2021-10-28 09:17:46,037 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-28 09:17:46,037 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:17:46,038 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-28 09:17:46,038 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2021-10-28 09:17:46,042 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 87 out of 142 [2021-10-28 09:17:46,044 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 132 places, 124 transitions, 308 flow. Second operand has 10 states, 10 states have (on average 90.6) internal successors, (906), 10 states have internal predecessors, (906), 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) [2021-10-28 09:17:46,045 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-28 09:17:46,045 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 87 of 142 [2021-10-28 09:17:46,045 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-28 09:17:46,989 INFO L129 PetriNetUnfolder]: 447/1312 cut-off events. [2021-10-28 09:17:46,989 INFO L130 PetriNetUnfolder]: For 94/112 co-relation queries the response was YES. [2021-10-28 09:17:46,998 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2238 conditions, 1312 events. 447/1312 cut-off events. For 94/112 co-relation queries the response was YES. Maximal size of possible extension queue 98. Compared 9006 event pairs, 290 based on Foata normal form. 18/1150 useless extension candidates. Maximal degree in co-relation 2229. Up to 561 conditions per place. [2021-10-28 09:17:47,011 INFO L132 encePairwiseOnDemand]: 130/142 looper letters, 55 selfloop transitions, 11 changer transitions 0/146 dead transitions. [2021-10-28 09:17:47,011 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 142 places, 146 transitions, 487 flow [2021-10-28 09:17:47,012 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-10-28 09:17:47,012 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2021-10-28 09:17:47,015 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 1024 transitions. [2021-10-28 09:17:47,017 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.6555697823303457 [2021-10-28 09:17:47,017 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 1024 transitions. [2021-10-28 09:17:47,017 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 1024 transitions. [2021-10-28 09:17:47,018 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-28 09:17:47,018 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 1024 transitions. [2021-10-28 09:17:47,022 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 93.0909090909091) internal successors, (1024), 11 states have internal predecessors, (1024), 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) [2021-10-28 09:17:47,027 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 142.0) internal successors, (1704), 12 states have internal predecessors, (1704), 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) [2021-10-28 09:17:47,028 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 142.0) internal successors, (1704), 12 states have internal predecessors, (1704), 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) [2021-10-28 09:17:47,028 INFO L186 Difference]: Start difference. First operand has 132 places, 124 transitions, 308 flow. Second operand 11 states and 1024 transitions. [2021-10-28 09:17:47,029 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 142 places, 146 transitions, 487 flow [2021-10-28 09:17:47,032 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 138 places, 146 transitions, 477 flow, removed 0 selfloop flow, removed 4 redundant places. [2021-10-28 09:17:47,036 INFO L242 Difference]: Finished difference. Result has 143 places, 128 transitions, 347 flow [2021-10-28 09:17:47,036 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=142, PETRI_DIFFERENCE_MINUEND_FLOW=298, PETRI_DIFFERENCE_MINUEND_PLACES=128, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=124, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=113, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=347, PETRI_PLACES=143, PETRI_TRANSITIONS=128} [2021-10-28 09:17:47,037 INFO L334 CegarLoopForPetriNet]: 127 programPoint places, 16 predicate places. [2021-10-28 09:17:47,037 INFO L470 AbstractCegarLoop]: Abstraction has has 143 places, 128 transitions, 347 flow [2021-10-28 09:17:47,038 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 90.6) internal successors, (906), 10 states have internal predecessors, (906), 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) [2021-10-28 09:17:47,038 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-28 09:17:47,038 INFO L254 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] [2021-10-28 09:17:47,038 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-10-28 09:17:47,039 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-10-28 09:17:47,039 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:17:47,039 INFO L85 PathProgramCache]: Analyzing trace with hash -1262219112, now seen corresponding path program 1 times [2021-10-28 09:17:47,039 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:17:47,040 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1351406570] [2021-10-28 09:17:47,040 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:17:47,040 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:17:47,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:17:47,363 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:17:47,363 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:17:47,363 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1351406570] [2021-10-28 09:17:47,364 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1351406570] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 09:17:47,364 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 09:17:47,364 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-10-28 09:17:47,364 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [55399919] [2021-10-28 09:17:47,365 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-10-28 09:17:47,365 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:17:47,366 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-10-28 09:17:47,366 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2021-10-28 09:17:47,369 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 88 out of 142 [2021-10-28 09:17:47,371 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 143 places, 128 transitions, 347 flow. Second operand has 11 states, 11 states have (on average 91.18181818181819) internal successors, (1003), 11 states have internal predecessors, (1003), 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) [2021-10-28 09:17:47,371 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-28 09:17:47,372 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 88 of 142 [2021-10-28 09:17:47,372 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-28 09:17:48,157 INFO L129 PetriNetUnfolder]: 433/1025 cut-off events. [2021-10-28 09:17:48,157 INFO L130 PetriNetUnfolder]: For 212/225 co-relation queries the response was YES. [2021-10-28 09:17:48,164 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2022 conditions, 1025 events. 433/1025 cut-off events. For 212/225 co-relation queries the response was YES. Maximal size of possible extension queue 83. Compared 5785 event pairs, 214 based on Foata normal form. 13/909 useless extension candidates. Maximal degree in co-relation 2008. Up to 494 conditions per place. [2021-10-28 09:17:48,175 INFO L132 encePairwiseOnDemand]: 129/142 looper letters, 42 selfloop transitions, 7 changer transitions 14/143 dead transitions. [2021-10-28 09:17:48,175 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 154 places, 143 transitions, 504 flow [2021-10-28 09:17:48,176 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-10-28 09:17:48,176 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2021-10-28 09:17:48,180 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 1118 transitions. [2021-10-28 09:17:48,181 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.6561032863849765 [2021-10-28 09:17:48,181 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 1118 transitions. [2021-10-28 09:17:48,181 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 1118 transitions. [2021-10-28 09:17:48,183 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-28 09:17:48,183 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 1118 transitions. [2021-10-28 09:17:48,187 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 93.16666666666667) internal successors, (1118), 12 states have internal predecessors, (1118), 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) [2021-10-28 09:17:48,193 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 142.0) internal successors, (1846), 13 states have internal predecessors, (1846), 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) [2021-10-28 09:17:48,194 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 142.0) internal successors, (1846), 13 states have internal predecessors, (1846), 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) [2021-10-28 09:17:48,194 INFO L186 Difference]: Start difference. First operand has 143 places, 128 transitions, 347 flow. Second operand 12 states and 1118 transitions. [2021-10-28 09:17:48,195 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 154 places, 143 transitions, 504 flow [2021-10-28 09:17:48,198 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 149 places, 143 transitions, 491 flow, removed 0 selfloop flow, removed 5 redundant places. [2021-10-28 09:17:48,202 INFO L242 Difference]: Finished difference. Result has 151 places, 122 transitions, 314 flow [2021-10-28 09:17:48,203 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=142, PETRI_DIFFERENCE_MINUEND_FLOW=334, PETRI_DIFFERENCE_MINUEND_PLACES=138, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=128, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=121, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=314, PETRI_PLACES=151, PETRI_TRANSITIONS=122} [2021-10-28 09:17:48,203 INFO L334 CegarLoopForPetriNet]: 127 programPoint places, 24 predicate places. [2021-10-28 09:17:48,204 INFO L470 AbstractCegarLoop]: Abstraction has has 151 places, 122 transitions, 314 flow [2021-10-28 09:17:48,204 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 91.18181818181819) internal successors, (1003), 11 states have internal predecessors, (1003), 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) [2021-10-28 09:17:48,205 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-28 09:17:48,205 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:17:48,205 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-10-28 09:17:48,206 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-10-28 09:17:48,206 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:17:48,206 INFO L85 PathProgramCache]: Analyzing trace with hash -298530776, now seen corresponding path program 1 times [2021-10-28 09:17:48,207 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:17:48,207 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [713227099] [2021-10-28 09:17:48,207 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:17:48,208 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:17:48,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:17:48,353 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-28 09:17:48,354 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:17:48,354 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [713227099] [2021-10-28 09:17:48,354 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [713227099] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 09:17:48,355 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1328111199] [2021-10-28 09:17:48,355 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:17:48,355 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 09:17:48,356 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dab0c62-9365-4979-9b8e-ad52ca18d8a1/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:17:48,359 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dab0c62-9365-4979-9b8e-ad52ca18d8a1/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 09:17:48,375 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dab0c62-9365-4979-9b8e-ad52ca18d8a1/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-10-28 09:17:48,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:17:48,528 INFO L263 TraceCheckSpWp]: Trace formula consists of 264 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-28 09:17:48,538 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:17:49,074 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-28 09:17:49,076 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1328111199] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 09:17:49,076 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-28 09:17:49,076 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9] total 14 [2021-10-28 09:17:49,079 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [950289110] [2021-10-28 09:17:49,080 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-10-28 09:17:49,080 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:17:49,080 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-10-28 09:17:49,081 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=146, Unknown=0, NotChecked=0, Total=182 [2021-10-28 09:17:49,084 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 100 out of 142 [2021-10-28 09:17:49,086 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 151 places, 122 transitions, 314 flow. Second operand has 14 states, 14 states have (on average 102.35714285714286) internal successors, (1433), 14 states have internal predecessors, (1433), 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) [2021-10-28 09:17:49,086 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-28 09:17:49,086 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 100 of 142 [2021-10-28 09:17:49,087 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-28 09:17:49,887 INFO L129 PetriNetUnfolder]: 1022/2083 cut-off events. [2021-10-28 09:17:49,887 INFO L130 PetriNetUnfolder]: For 529/529 co-relation queries the response was YES. [2021-10-28 09:17:49,901 INFO L84 FinitePrefix]: Finished finitePrefix Result has 4572 conditions, 2083 events. 1022/2083 cut-off events. For 529/529 co-relation queries the response was YES. Maximal size of possible extension queue 166. Compared 14322 event pairs, 251 based on Foata normal form. 5/2024 useless extension candidates. Maximal degree in co-relation 4556. Up to 465 conditions per place. [2021-10-28 09:17:49,922 INFO L132 encePairwiseOnDemand]: 130/142 looper letters, 64 selfloop transitions, 19 changer transitions 0/171 dead transitions. [2021-10-28 09:17:49,923 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 151 places, 171 transitions, 614 flow [2021-10-28 09:17:49,923 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-10-28 09:17:49,923 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2021-10-28 09:17:49,927 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1384 transitions. [2021-10-28 09:17:49,929 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7497291440953413 [2021-10-28 09:17:49,929 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 1384 transitions. [2021-10-28 09:17:49,929 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 1384 transitions. [2021-10-28 09:17:49,930 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-28 09:17:49,931 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 1384 transitions. [2021-10-28 09:17:49,936 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 106.46153846153847) internal successors, (1384), 13 states have internal predecessors, (1384), 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) [2021-10-28 09:17:49,942 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 142.0) internal successors, (1988), 14 states have internal predecessors, (1988), 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) [2021-10-28 09:17:49,944 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 142.0) internal successors, (1988), 14 states have internal predecessors, (1988), 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) [2021-10-28 09:17:49,944 INFO L186 Difference]: Start difference. First operand has 151 places, 122 transitions, 314 flow. Second operand 13 states and 1384 transitions. [2021-10-28 09:17:49,944 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 151 places, 171 transitions, 614 flow [2021-10-28 09:17:49,954 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 137 places, 171 transitions, 551 flow, removed 24 selfloop flow, removed 14 redundant places. [2021-10-28 09:17:49,958 INFO L242 Difference]: Finished difference. Result has 142 places, 135 transitions, 382 flow [2021-10-28 09:17:49,958 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=142, PETRI_DIFFERENCE_MINUEND_FLOW=283, PETRI_DIFFERENCE_MINUEND_PLACES=125, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=122, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=111, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=382, PETRI_PLACES=142, PETRI_TRANSITIONS=135} [2021-10-28 09:17:49,959 INFO L334 CegarLoopForPetriNet]: 127 programPoint places, 15 predicate places. [2021-10-28 09:17:49,959 INFO L470 AbstractCegarLoop]: Abstraction has has 142 places, 135 transitions, 382 flow [2021-10-28 09:17:49,961 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 102.35714285714286) internal successors, (1433), 14 states have internal predecessors, (1433), 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) [2021-10-28 09:17:49,961 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-28 09:17:49,961 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:17:50,005 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dab0c62-9365-4979-9b8e-ad52ca18d8a1/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-10-28 09:17:50,187 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dab0c62-9365-4979-9b8e-ad52ca18d8a1/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2021-10-28 09:17:50,187 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-10-28 09:17:50,187 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:17:50,188 INFO L85 PathProgramCache]: Analyzing trace with hash 48463684, now seen corresponding path program 2 times [2021-10-28 09:17:50,188 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:17:50,188 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [481828587] [2021-10-28 09:17:50,188 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:17:50,188 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:17:50,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:17:50,344 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-28 09:17:50,345 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:17:50,350 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [481828587] [2021-10-28 09:17:50,350 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [481828587] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 09:17:50,351 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1662433263] [2021-10-28 09:17:50,351 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-28 09:17:50,351 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 09:17:50,351 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dab0c62-9365-4979-9b8e-ad52ca18d8a1/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:17:50,358 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dab0c62-9365-4979-9b8e-ad52ca18d8a1/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 09:17:50,363 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dab0c62-9365-4979-9b8e-ad52ca18d8a1/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-10-28 09:17:50,525 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-28 09:17:50,525 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-28 09:17:50,527 INFO L263 TraceCheckSpWp]: Trace formula consists of 264 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-28 09:17:50,531 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:17:50,934 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-28 09:17:50,934 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1662433263] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 09:17:50,934 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-28 09:17:50,934 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9] total 13 [2021-10-28 09:17:50,935 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1610076959] [2021-10-28 09:17:50,935 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-10-28 09:17:50,936 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:17:50,936 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-10-28 09:17:50,936 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2021-10-28 09:17:50,939 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 100 out of 142 [2021-10-28 09:17:50,943 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 142 places, 135 transitions, 382 flow. Second operand has 13 states, 13 states have (on average 102.53846153846153) internal successors, (1333), 13 states have internal predecessors, (1333), 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) [2021-10-28 09:17:50,943 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-28 09:17:50,943 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 100 of 142 [2021-10-28 09:17:50,943 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-28 09:17:51,734 INFO L129 PetriNetUnfolder]: 1416/2973 cut-off events. [2021-10-28 09:17:51,734 INFO L130 PetriNetUnfolder]: For 1012/1024 co-relation queries the response was YES. [2021-10-28 09:17:51,753 INFO L84 FinitePrefix]: Finished finitePrefix Result has 6931 conditions, 2973 events. 1416/2973 cut-off events. For 1012/1024 co-relation queries the response was YES. Maximal size of possible extension queue 185. Compared 21953 event pairs, 614 based on Foata normal form. 5/2618 useless extension candidates. Maximal degree in co-relation 6919. Up to 1278 conditions per place. [2021-10-28 09:17:51,786 INFO L132 encePairwiseOnDemand]: 131/142 looper letters, 73 selfloop transitions, 14 changer transitions 0/175 dead transitions. [2021-10-28 09:17:51,786 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 151 places, 175 transitions, 705 flow [2021-10-28 09:17:51,786 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-10-28 09:17:51,786 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2021-10-28 09:17:51,790 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1065 transitions. [2021-10-28 09:17:51,791 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.75 [2021-10-28 09:17:51,791 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1065 transitions. [2021-10-28 09:17:51,792 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1065 transitions. [2021-10-28 09:17:51,793 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-28 09:17:51,793 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1065 transitions. [2021-10-28 09:17:51,797 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 106.5) internal successors, (1065), 10 states have internal predecessors, (1065), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:17:51,801 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 142.0) internal successors, (1562), 11 states have internal predecessors, (1562), 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) [2021-10-28 09:17:51,803 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 142.0) internal successors, (1562), 11 states have internal predecessors, (1562), 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) [2021-10-28 09:17:51,803 INFO L186 Difference]: Start difference. First operand has 142 places, 135 transitions, 382 flow. Second operand 10 states and 1065 transitions. [2021-10-28 09:17:51,803 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 151 places, 175 transitions, 705 flow [2021-10-28 09:17:51,814 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 147 places, 175 transitions, 698 flow, removed 0 selfloop flow, removed 4 redundant places. [2021-10-28 09:17:51,819 INFO L242 Difference]: Finished difference. Result has 150 places, 141 transitions, 459 flow [2021-10-28 09:17:51,820 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=142, PETRI_DIFFERENCE_MINUEND_FLOW=375, PETRI_DIFFERENCE_MINUEND_PLACES=138, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=135, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=121, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=459, PETRI_PLACES=150, PETRI_TRANSITIONS=141} [2021-10-28 09:17:51,820 INFO L334 CegarLoopForPetriNet]: 127 programPoint places, 23 predicate places. [2021-10-28 09:17:51,820 INFO L470 AbstractCegarLoop]: Abstraction has has 150 places, 141 transitions, 459 flow [2021-10-28 09:17:51,822 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 102.53846153846153) internal successors, (1333), 13 states have internal predecessors, (1333), 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) [2021-10-28 09:17:51,822 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-28 09:17:51,822 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:17:51,873 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dab0c62-9365-4979-9b8e-ad52ca18d8a1/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-10-28 09:17:52,041 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dab0c62-9365-4979-9b8e-ad52ca18d8a1/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2021-10-28 09:17:52,042 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-10-28 09:17:52,042 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:17:52,043 INFO L85 PathProgramCache]: Analyzing trace with hash 820904442, now seen corresponding path program 3 times [2021-10-28 09:17:52,043 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:17:52,043 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [626331753] [2021-10-28 09:17:52,043 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:17:52,043 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:17:52,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:17:52,251 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-28 09:17:52,251 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:17:52,251 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [626331753] [2021-10-28 09:17:52,252 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [626331753] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 09:17:52,252 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [948479482] [2021-10-28 09:17:52,252 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-28 09:17:52,252 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 09:17:52,253 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dab0c62-9365-4979-9b8e-ad52ca18d8a1/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:17:52,254 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dab0c62-9365-4979-9b8e-ad52ca18d8a1/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 09:17:52,269 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dab0c62-9365-4979-9b8e-ad52ca18d8a1/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-10-28 09:17:52,465 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-10-28 09:17:52,465 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-28 09:17:52,468 INFO L263 TraceCheckSpWp]: Trace formula consists of 264 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-28 09:17:52,472 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:17:53,037 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-28 09:17:53,038 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [948479482] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 09:17:53,038 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-28 09:17:53,039 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9] total 14 [2021-10-28 09:17:53,039 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [377742487] [2021-10-28 09:17:53,040 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-10-28 09:17:53,040 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:17:53,041 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-10-28 09:17:53,041 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=146, Unknown=0, NotChecked=0, Total=182 [2021-10-28 09:17:53,044 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 100 out of 142 [2021-10-28 09:17:53,047 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 150 places, 141 transitions, 459 flow. Second operand has 14 states, 14 states have (on average 102.35714285714286) internal successors, (1433), 14 states have internal predecessors, (1433), 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) [2021-10-28 09:17:53,047 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-28 09:17:53,047 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 100 of 142 [2021-10-28 09:17:53,047 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-28 09:17:54,422 INFO L129 PetriNetUnfolder]: 1885/3864 cut-off events. [2021-10-28 09:17:54,422 INFO L130 PetriNetUnfolder]: For 2534/2546 co-relation queries the response was YES. [2021-10-28 09:17:54,451 INFO L84 FinitePrefix]: Finished finitePrefix Result has 9888 conditions, 3864 events. 1885/3864 cut-off events. For 2534/2546 co-relation queries the response was YES. Maximal size of possible extension queue 262. Compared 29992 event pairs, 363 based on Foata normal form. 17/3384 useless extension candidates. Maximal degree in co-relation 9873. Up to 640 conditions per place. [2021-10-28 09:17:54,488 INFO L132 encePairwiseOnDemand]: 129/142 looper letters, 77 selfloop transitions, 35 changer transitions 0/200 dead transitions. [2021-10-28 09:17:54,488 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 163 places, 200 transitions, 887 flow [2021-10-28 09:17:54,488 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-10-28 09:17:54,489 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2021-10-28 09:17:54,493 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 1500 transitions. [2021-10-28 09:17:54,495 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7545271629778671 [2021-10-28 09:17:54,495 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 1500 transitions. [2021-10-28 09:17:54,495 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 1500 transitions. [2021-10-28 09:17:54,496 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-28 09:17:54,497 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 1500 transitions. [2021-10-28 09:17:54,502 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 107.14285714285714) internal successors, (1500), 14 states have internal predecessors, (1500), 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) [2021-10-28 09:17:54,509 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 142.0) internal successors, (2130), 15 states have internal predecessors, (2130), 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) [2021-10-28 09:17:54,510 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 142.0) internal successors, (2130), 15 states have internal predecessors, (2130), 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) [2021-10-28 09:17:54,511 INFO L186 Difference]: Start difference. First operand has 150 places, 141 transitions, 459 flow. Second operand 14 states and 1500 transitions. [2021-10-28 09:17:54,511 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 163 places, 200 transitions, 887 flow [2021-10-28 09:17:54,534 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 157 places, 200 transitions, 863 flow, removed 2 selfloop flow, removed 6 redundant places. [2021-10-28 09:17:54,539 INFO L242 Difference]: Finished difference. Result has 162 places, 154 transitions, 644 flow [2021-10-28 09:17:54,540 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=142, PETRI_DIFFERENCE_MINUEND_FLOW=441, PETRI_DIFFERENCE_MINUEND_PLACES=144, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=141, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=114, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=644, PETRI_PLACES=162, PETRI_TRANSITIONS=154} [2021-10-28 09:17:54,540 INFO L334 CegarLoopForPetriNet]: 127 programPoint places, 35 predicate places. [2021-10-28 09:17:54,540 INFO L470 AbstractCegarLoop]: Abstraction has has 162 places, 154 transitions, 644 flow [2021-10-28 09:17:54,541 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 102.35714285714286) internal successors, (1433), 14 states have internal predecessors, (1433), 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) [2021-10-28 09:17:54,541 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-28 09:17:54,542 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:17:54,590 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dab0c62-9365-4979-9b8e-ad52ca18d8a1/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-10-28 09:17:54,766 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dab0c62-9365-4979-9b8e-ad52ca18d8a1/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 09:17:54,766 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-10-28 09:17:54,766 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:17:54,767 INFO L85 PathProgramCache]: Analyzing trace with hash -1101790908, now seen corresponding path program 4 times [2021-10-28 09:17:54,767 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:17:54,767 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1929694203] [2021-10-28 09:17:54,767 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:17:54,767 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:17:54,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:17:54,963 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-28 09:17:54,963 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:17:54,964 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1929694203] [2021-10-28 09:17:54,964 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1929694203] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 09:17:54,964 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1987272502] [2021-10-28 09:17:54,964 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-28 09:17:54,965 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 09:17:54,965 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dab0c62-9365-4979-9b8e-ad52ca18d8a1/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:17:54,966 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dab0c62-9365-4979-9b8e-ad52ca18d8a1/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 09:17:54,985 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dab0c62-9365-4979-9b8e-ad52ca18d8a1/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-10-28 09:17:55,226 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-28 09:17:55,226 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-28 09:17:55,228 INFO L263 TraceCheckSpWp]: Trace formula consists of 210 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-28 09:17:55,232 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:17:55,716 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-28 09:17:55,716 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1987272502] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 09:17:55,716 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-28 09:17:55,717 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9] total 14 [2021-10-28 09:17:55,717 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1139208346] [2021-10-28 09:17:55,718 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-10-28 09:17:55,718 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:17:55,719 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-10-28 09:17:55,719 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=145, Unknown=0, NotChecked=0, Total=182 [2021-10-28 09:17:55,722 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 100 out of 142 [2021-10-28 09:17:55,724 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 162 places, 154 transitions, 644 flow. Second operand has 14 states, 14 states have (on average 102.35714285714286) internal successors, (1433), 14 states have internal predecessors, (1433), 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) [2021-10-28 09:17:55,724 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-28 09:17:55,725 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 100 of 142 [2021-10-28 09:17:55,725 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-28 09:17:57,197 INFO L129 PetriNetUnfolder]: 1881/3924 cut-off events. [2021-10-28 09:17:57,197 INFO L130 PetriNetUnfolder]: For 5204/5216 co-relation queries the response was YES. [2021-10-28 09:17:57,228 INFO L84 FinitePrefix]: Finished finitePrefix Result has 11050 conditions, 3924 events. 1881/3924 cut-off events. For 5204/5216 co-relation queries the response was YES. Maximal size of possible extension queue 267. Compared 30968 event pairs, 443 based on Foata normal form. 5/3435 useless extension candidates. Maximal degree in co-relation 11030. Up to 801 conditions per place. [2021-10-28 09:17:57,261 INFO L132 encePairwiseOnDemand]: 130/142 looper letters, 82 selfloop transitions, 36 changer transitions 0/206 dead transitions. [2021-10-28 09:17:57,261 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 174 places, 206 transitions, 1093 flow [2021-10-28 09:17:57,262 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-10-28 09:17:57,262 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2021-10-28 09:17:57,266 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1392 transitions. [2021-10-28 09:17:57,267 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7540628385698809 [2021-10-28 09:17:57,268 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 1392 transitions. [2021-10-28 09:17:57,268 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 1392 transitions. [2021-10-28 09:17:57,269 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-28 09:17:57,270 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 1392 transitions. [2021-10-28 09:17:57,275 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 107.07692307692308) internal successors, (1392), 13 states have internal predecessors, (1392), 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) [2021-10-28 09:17:57,280 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 142.0) internal successors, (1988), 14 states have internal predecessors, (1988), 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) [2021-10-28 09:17:57,282 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 142.0) internal successors, (1988), 14 states have internal predecessors, (1988), 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) [2021-10-28 09:17:57,282 INFO L186 Difference]: Start difference. First operand has 162 places, 154 transitions, 644 flow. Second operand 13 states and 1392 transitions. [2021-10-28 09:17:57,282 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 174 places, 206 transitions, 1093 flow [2021-10-28 09:17:57,307 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 167 places, 206 transitions, 1057 flow, removed 2 selfloop flow, removed 7 redundant places. [2021-10-28 09:17:57,313 INFO L242 Difference]: Finished difference. Result has 173 places, 164 transitions, 839 flow [2021-10-28 09:17:57,313 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=142, PETRI_DIFFERENCE_MINUEND_FLOW=615, PETRI_DIFFERENCE_MINUEND_PLACES=155, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=154, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=120, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=839, PETRI_PLACES=173, PETRI_TRANSITIONS=164} [2021-10-28 09:17:57,314 INFO L334 CegarLoopForPetriNet]: 127 programPoint places, 46 predicate places. [2021-10-28 09:17:57,314 INFO L470 AbstractCegarLoop]: Abstraction has has 173 places, 164 transitions, 839 flow [2021-10-28 09:17:57,315 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 102.35714285714286) internal successors, (1433), 14 states have internal predecessors, (1433), 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) [2021-10-28 09:17:57,315 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-28 09:17:57,315 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:17:57,359 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dab0c62-9365-4979-9b8e-ad52ca18d8a1/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-10-28 09:17:57,530 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dab0c62-9365-4979-9b8e-ad52ca18d8a1/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 09:17:57,530 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-10-28 09:17:57,530 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:17:57,530 INFO L85 PathProgramCache]: Analyzing trace with hash 841600772, now seen corresponding path program 5 times [2021-10-28 09:17:57,531 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:17:57,531 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1149138580] [2021-10-28 09:17:57,531 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:17:57,531 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:17:57,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:17:57,657 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-28 09:17:57,657 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:17:57,658 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1149138580] [2021-10-28 09:17:57,658 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1149138580] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 09:17:57,658 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [625599794] [2021-10-28 09:17:57,658 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-28 09:17:57,658 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 09:17:57,659 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dab0c62-9365-4979-9b8e-ad52ca18d8a1/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:17:57,662 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dab0c62-9365-4979-9b8e-ad52ca18d8a1/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 09:17:57,681 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dab0c62-9365-4979-9b8e-ad52ca18d8a1/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-10-28 09:17:57,956 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-28 09:17:57,956 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-28 09:17:57,959 INFO L263 TraceCheckSpWp]: Trace formula consists of 264 conjuncts, 6 conjunts are in the unsatisfiable core [2021-10-28 09:17:57,962 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:17:58,323 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-28 09:17:58,324 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [625599794] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 09:17:58,324 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-28 09:17:58,324 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 7] total 14 [2021-10-28 09:17:58,325 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [416368062] [2021-10-28 09:17:58,325 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-10-28 09:17:58,326 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:17:58,326 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-10-28 09:17:58,327 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=149, Unknown=0, NotChecked=0, Total=182 [2021-10-28 09:17:58,329 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 95 out of 142 [2021-10-28 09:17:58,332 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 173 places, 164 transitions, 839 flow. Second operand has 14 states, 14 states have (on average 98.71428571428571) internal successors, (1382), 14 states have internal predecessors, (1382), 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) [2021-10-28 09:17:58,332 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-28 09:17:58,332 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 95 of 142 [2021-10-28 09:17:58,332 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-28 09:18:01,123 INFO L129 PetriNetUnfolder]: 4362/8717 cut-off events. [2021-10-28 09:18:01,123 INFO L130 PetriNetUnfolder]: For 19116/19138 co-relation queries the response was YES. [2021-10-28 09:18:01,211 INFO L84 FinitePrefix]: Finished finitePrefix Result has 25740 conditions, 8717 events. 4362/8717 cut-off events. For 19116/19138 co-relation queries the response was YES. Maximal size of possible extension queue 361. Compared 70005 event pairs, 1138 based on Foata normal form. 33/8239 useless extension candidates. Maximal degree in co-relation 25714. Up to 1616 conditions per place. [2021-10-28 09:18:01,286 INFO L132 encePairwiseOnDemand]: 126/142 looper letters, 185 selfloop transitions, 81 changer transitions 0/349 dead transitions. [2021-10-28 09:18:01,286 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 190 places, 349 transitions, 2490 flow [2021-10-28 09:18:01,287 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-10-28 09:18:01,287 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2021-10-28 09:18:01,293 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 1910 transitions. [2021-10-28 09:18:01,295 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7472613458528952 [2021-10-28 09:18:01,295 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 1910 transitions. [2021-10-28 09:18:01,296 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 1910 transitions. [2021-10-28 09:18:01,298 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-28 09:18:01,298 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 1910 transitions. [2021-10-28 09:18:01,305 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 106.11111111111111) internal successors, (1910), 18 states have internal predecessors, (1910), 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) [2021-10-28 09:18:01,313 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 142.0) internal successors, (2698), 19 states have internal predecessors, (2698), 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) [2021-10-28 09:18:01,315 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 142.0) internal successors, (2698), 19 states have internal predecessors, (2698), 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) [2021-10-28 09:18:01,316 INFO L186 Difference]: Start difference. First operand has 173 places, 164 transitions, 839 flow. Second operand 18 states and 1910 transitions. [2021-10-28 09:18:01,316 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 190 places, 349 transitions, 2490 flow [2021-10-28 09:18:01,453 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 185 places, 349 transitions, 2441 flow, removed 20 selfloop flow, removed 5 redundant places. [2021-10-28 09:18:01,460 INFO L242 Difference]: Finished difference. Result has 197 places, 219 transitions, 1661 flow [2021-10-28 09:18:01,461 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=142, PETRI_DIFFERENCE_MINUEND_FLOW=812, PETRI_DIFFERENCE_MINUEND_PLACES=168, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=164, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=130, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=1661, PETRI_PLACES=197, PETRI_TRANSITIONS=219} [2021-10-28 09:18:01,461 INFO L334 CegarLoopForPetriNet]: 127 programPoint places, 70 predicate places. [2021-10-28 09:18:01,461 INFO L470 AbstractCegarLoop]: Abstraction has has 197 places, 219 transitions, 1661 flow [2021-10-28 09:18:01,462 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 98.71428571428571) internal successors, (1382), 14 states have internal predecessors, (1382), 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) [2021-10-28 09:18:01,463 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-28 09:18:01,463 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:18:01,510 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dab0c62-9365-4979-9b8e-ad52ca18d8a1/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-10-28 09:18:01,682 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dab0c62-9365-4979-9b8e-ad52ca18d8a1/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2021-10-28 09:18:01,682 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-10-28 09:18:01,682 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:18:01,683 INFO L85 PathProgramCache]: Analyzing trace with hash 1765144374, now seen corresponding path program 6 times [2021-10-28 09:18:01,683 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:18:01,683 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1103485162] [2021-10-28 09:18:01,683 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:18:01,683 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:18:01,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:18:01,831 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:18:01,831 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:18:01,832 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1103485162] [2021-10-28 09:18:01,832 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1103485162] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 09:18:01,832 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [459322043] [2021-10-28 09:18:01,832 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-28 09:18:01,833 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 09:18:01,833 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dab0c62-9365-4979-9b8e-ad52ca18d8a1/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:18:01,838 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dab0c62-9365-4979-9b8e-ad52ca18d8a1/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 09:18:01,839 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dab0c62-9365-4979-9b8e-ad52ca18d8a1/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-10-28 09:18:02,200 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2021-10-28 09:18:02,200 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-28 09:18:02,202 INFO L263 TraceCheckSpWp]: Trace formula consists of 264 conjuncts, 6 conjunts are in the unsatisfiable core [2021-10-28 09:18:02,205 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:18:02,673 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-28 09:18:02,673 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [459322043] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 09:18:02,674 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-28 09:18:02,674 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 7] total 14 [2021-10-28 09:18:02,677 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1044305426] [2021-10-28 09:18:02,678 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-10-28 09:18:02,678 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:18:02,679 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-10-28 09:18:02,679 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=148, Unknown=0, NotChecked=0, Total=182 [2021-10-28 09:18:02,682 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 95 out of 142 [2021-10-28 09:18:02,684 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 197 places, 219 transitions, 1661 flow. Second operand has 14 states, 14 states have (on average 98.71428571428571) internal successors, (1382), 14 states have internal predecessors, (1382), 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) [2021-10-28 09:18:02,684 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-28 09:18:02,685 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 95 of 142 [2021-10-28 09:18:02,685 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-28 09:18:05,554 INFO L129 PetriNetUnfolder]: 5114/10065 cut-off events. [2021-10-28 09:18:05,554 INFO L130 PetriNetUnfolder]: For 43242/43265 co-relation queries the response was YES. [2021-10-28 09:18:05,644 INFO L84 FinitePrefix]: Finished finitePrefix Result has 36029 conditions, 10065 events. 5114/10065 cut-off events. For 43242/43265 co-relation queries the response was YES. Maximal size of possible extension queue 418. Compared 82469 event pairs, 1090 based on Foata normal form. 14/9916 useless extension candidates. Maximal degree in co-relation 35991. Up to 1924 conditions per place. [2021-10-28 09:18:05,847 INFO L132 encePairwiseOnDemand]: 126/142 looper letters, 219 selfloop transitions, 103 changer transitions 0/405 dead transitions. [2021-10-28 09:18:05,847 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 216 places, 405 transitions, 3488 flow [2021-10-28 09:18:05,848 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-10-28 09:18:05,848 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2021-10-28 09:18:05,858 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 2121 transitions. [2021-10-28 09:18:05,861 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7468309859154929 [2021-10-28 09:18:05,862 INFO L72 ComplementDD]: Start complementDD. Operand 20 states and 2121 transitions. [2021-10-28 09:18:05,862 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 2121 transitions. [2021-10-28 09:18:05,864 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-28 09:18:05,864 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 20 states and 2121 transitions. [2021-10-28 09:18:05,881 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 21 states, 20 states have (on average 106.05) internal successors, (2121), 20 states have internal predecessors, (2121), 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) [2021-10-28 09:18:05,899 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 21 states, 21 states have (on average 142.0) internal successors, (2982), 21 states have internal predecessors, (2982), 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) [2021-10-28 09:18:05,902 INFO L81 ComplementDD]: Finished complementDD. Result has 21 states, 21 states have (on average 142.0) internal successors, (2982), 21 states have internal predecessors, (2982), 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) [2021-10-28 09:18:05,902 INFO L186 Difference]: Start difference. First operand has 197 places, 219 transitions, 1661 flow. Second operand 20 states and 2121 transitions. [2021-10-28 09:18:05,902 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 216 places, 405 transitions, 3488 flow [2021-10-28 09:18:06,202 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 211 places, 405 transitions, 3465 flow, removed 7 selfloop flow, removed 5 redundant places. [2021-10-28 09:18:06,213 INFO L242 Difference]: Finished difference. Result has 221 places, 264 transitions, 2394 flow [2021-10-28 09:18:06,214 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=142, PETRI_DIFFERENCE_MINUEND_FLOW=1638, PETRI_DIFFERENCE_MINUEND_PLACES=192, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=219, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=58, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=147, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=2394, PETRI_PLACES=221, PETRI_TRANSITIONS=264} [2021-10-28 09:18:06,214 INFO L334 CegarLoopForPetriNet]: 127 programPoint places, 94 predicate places. [2021-10-28 09:18:06,214 INFO L470 AbstractCegarLoop]: Abstraction has has 221 places, 264 transitions, 2394 flow [2021-10-28 09:18:06,215 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 98.71428571428571) internal successors, (1382), 14 states have internal predecessors, (1382), 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) [2021-10-28 09:18:06,215 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-28 09:18:06,216 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:18:06,263 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dab0c62-9365-4979-9b8e-ad52ca18d8a1/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2021-10-28 09:18:06,442 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dab0c62-9365-4979-9b8e-ad52ca18d8a1/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 09:18:06,442 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-10-28 09:18:06,442 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:18:06,443 INFO L85 PathProgramCache]: Analyzing trace with hash 1771697692, now seen corresponding path program 1 times [2021-10-28 09:18:06,443 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:18:06,443 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1490387128] [2021-10-28 09:18:06,443 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:18:06,443 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:18:06,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:18:06,576 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-28 09:18:06,576 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:18:06,576 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1490387128] [2021-10-28 09:18:06,577 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1490387128] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 09:18:06,577 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1923561146] [2021-10-28 09:18:06,577 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:18:06,577 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 09:18:06,577 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dab0c62-9365-4979-9b8e-ad52ca18d8a1/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:18:06,579 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dab0c62-9365-4979-9b8e-ad52ca18d8a1/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 09:18:06,605 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dab0c62-9365-4979-9b8e-ad52ca18d8a1/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-10-28 09:18:06,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:18:06,964 INFO L263 TraceCheckSpWp]: Trace formula consists of 264 conjuncts, 6 conjunts are in the unsatisfiable core [2021-10-28 09:18:06,966 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:18:07,448 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-28 09:18:07,449 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1923561146] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 09:18:07,449 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-28 09:18:07,449 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7] total 10 [2021-10-28 09:18:07,449 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1987758196] [2021-10-28 09:18:07,450 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-28 09:18:07,450 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:18:07,451 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-28 09:18:07,451 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2021-10-28 09:18:07,453 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 109 out of 142 [2021-10-28 09:18:07,454 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 221 places, 264 transitions, 2394 flow. Second operand has 10 states, 10 states have (on average 111.5) internal successors, (1115), 10 states have internal predecessors, (1115), 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) [2021-10-28 09:18:07,454 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-28 09:18:07,455 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 109 of 142 [2021-10-28 09:18:07,455 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-28 09:18:08,193 INFO L129 PetriNetUnfolder]: 768/2347 cut-off events. [2021-10-28 09:18:08,193 INFO L130 PetriNetUnfolder]: For 16242/16531 co-relation queries the response was YES. [2021-10-28 09:18:08,233 INFO L84 FinitePrefix]: Finished finitePrefix Result has 9105 conditions, 2347 events. 768/2347 cut-off events. For 16242/16531 co-relation queries the response was YES. Maximal size of possible extension queue 153. Compared 19086 event pairs, 233 based on Foata normal form. 83/2206 useless extension candidates. Maximal degree in co-relation 9057. Up to 490 conditions per place. [2021-10-28 09:18:08,263 INFO L132 encePairwiseOnDemand]: 134/142 looper letters, 73 selfloop transitions, 33 changer transitions 0/284 dead transitions. [2021-10-28 09:18:08,263 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 228 places, 284 transitions, 2830 flow [2021-10-28 09:18:08,264 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-28 09:18:08,264 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-10-28 09:18:08,266 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 907 transitions. [2021-10-28 09:18:08,267 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7984154929577465 [2021-10-28 09:18:08,267 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 907 transitions. [2021-10-28 09:18:08,267 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 907 transitions. [2021-10-28 09:18:08,268 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-28 09:18:08,268 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 907 transitions. [2021-10-28 09:18:08,271 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 113.375) internal successors, (907), 8 states have internal predecessors, (907), 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) [2021-10-28 09:18:08,274 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 142.0) internal successors, (1278), 9 states have internal predecessors, (1278), 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) [2021-10-28 09:18:08,275 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 142.0) internal successors, (1278), 9 states have internal predecessors, (1278), 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) [2021-10-28 09:18:08,275 INFO L186 Difference]: Start difference. First operand has 221 places, 264 transitions, 2394 flow. Second operand 8 states and 907 transitions. [2021-10-28 09:18:08,275 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 228 places, 284 transitions, 2830 flow [2021-10-28 09:18:08,368 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 222 places, 284 transitions, 2759 flow, removed 18 selfloop flow, removed 6 redundant places. [2021-10-28 09:18:08,376 INFO L242 Difference]: Finished difference. Result has 222 places, 263 transitions, 2383 flow [2021-10-28 09:18:08,377 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=142, PETRI_DIFFERENCE_MINUEND_FLOW=2317, PETRI_DIFFERENCE_MINUEND_PLACES=215, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=263, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=230, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2383, PETRI_PLACES=222, PETRI_TRANSITIONS=263} [2021-10-28 09:18:08,378 INFO L334 CegarLoopForPetriNet]: 127 programPoint places, 95 predicate places. [2021-10-28 09:18:08,378 INFO L470 AbstractCegarLoop]: Abstraction has has 222 places, 263 transitions, 2383 flow [2021-10-28 09:18:08,379 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 111.5) internal successors, (1115), 10 states have internal predecessors, (1115), 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) [2021-10-28 09:18:08,379 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-28 09:18:08,379 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:18:08,427 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dab0c62-9365-4979-9b8e-ad52ca18d8a1/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2021-10-28 09:18:08,594 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dab0c62-9365-4979-9b8e-ad52ca18d8a1/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2021-10-28 09:18:08,594 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-10-28 09:18:08,594 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:18:08,594 INFO L85 PathProgramCache]: Analyzing trace with hash 168191584, now seen corresponding path program 1 times [2021-10-28 09:18:08,595 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:18:08,595 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [386749598] [2021-10-28 09:18:08,595 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:18:08,595 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:18:08,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:18:08,780 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-10-28 09:18:08,780 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:18:08,780 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [386749598] [2021-10-28 09:18:08,781 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [386749598] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 09:18:08,781 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 09:18:08,781 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-10-28 09:18:08,781 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [65742084] [2021-10-28 09:18:08,782 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-28 09:18:08,782 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:18:08,783 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-28 09:18:08,783 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2021-10-28 09:18:08,785 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 96 out of 142 [2021-10-28 09:18:08,786 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 222 places, 263 transitions, 2383 flow. Second operand has 8 states, 8 states have (on average 100.125) internal successors, (801), 8 states have internal predecessors, (801), 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) [2021-10-28 09:18:08,786 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-28 09:18:08,786 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 96 of 142 [2021-10-28 09:18:08,787 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-28 09:18:09,048 INFO L129 PetriNetUnfolder]: 162/635 cut-off events. [2021-10-28 09:18:09,048 INFO L130 PetriNetUnfolder]: For 4393/4457 co-relation queries the response was YES. [2021-10-28 09:18:09,052 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2478 conditions, 635 events. 162/635 cut-off events. For 4393/4457 co-relation queries the response was YES. Maximal size of possible extension queue 42. Compared 3516 event pairs, 10 based on Foata normal form. 42/670 useless extension candidates. Maximal degree in co-relation 2431. Up to 87 conditions per place. [2021-10-28 09:18:09,053 INFO L132 encePairwiseOnDemand]: 133/142 looper letters, 0 selfloop transitions, 0 changer transitions 223/223 dead transitions. [2021-10-28 09:18:09,053 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 209 places, 223 transitions, 2311 flow [2021-10-28 09:18:09,054 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-10-28 09:18:09,054 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-10-28 09:18:09,055 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 891 transitions. [2021-10-28 09:18:09,056 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.6971830985915493 [2021-10-28 09:18:09,056 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 891 transitions. [2021-10-28 09:18:09,056 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 891 transitions. [2021-10-28 09:18:09,057 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-28 09:18:09,057 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 891 transitions. [2021-10-28 09:18:09,059 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 99.0) internal successors, (891), 9 states have internal predecessors, (891), 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) [2021-10-28 09:18:09,061 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 142.0) internal successors, (1420), 10 states have internal predecessors, (1420), 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) [2021-10-28 09:18:09,062 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 142.0) internal successors, (1420), 10 states have internal predecessors, (1420), 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) [2021-10-28 09:18:09,062 INFO L186 Difference]: Start difference. First operand has 222 places, 263 transitions, 2383 flow. Second operand 9 states and 891 transitions. [2021-10-28 09:18:09,062 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 209 places, 223 transitions, 2311 flow [2021-10-28 09:18:09,091 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 200 places, 223 transitions, 2259 flow, removed 2 selfloop flow, removed 9 redundant places. [2021-10-28 09:18:09,094 INFO L242 Difference]: Finished difference. Result has 200 places, 0 transitions, 0 flow [2021-10-28 09:18:09,095 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=142, PETRI_DIFFERENCE_MINUEND_FLOW=1989, PETRI_DIFFERENCE_MINUEND_PLACES=192, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=212, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=212, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=0, PETRI_PLACES=200, PETRI_TRANSITIONS=0} [2021-10-28 09:18:09,095 INFO L334 CegarLoopForPetriNet]: 127 programPoint places, 73 predicate places. [2021-10-28 09:18:09,095 INFO L470 AbstractCegarLoop]: Abstraction has has 200 places, 0 transitions, 0 flow [2021-10-28 09:18:09,096 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 100.125) internal successors, (801), 8 states have internal predecessors, (801), 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) [2021-10-28 09:18:09,098 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-28 09:18:09,099 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATION [2021-10-28 09:18:09,099 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATION [2021-10-28 09:18:09,099 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATION [2021-10-28 09:18:09,099 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-10-28 09:18:09,103 INFO L731 BasicCegarLoop]: Path program histogram: [6, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:18:09,106 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2021-10-28 09:18:09,106 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-28 09:18:09,109 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.10 09:18:09 BasicIcfg [2021-10-28 09:18:09,109 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-28 09:18:09,109 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-28 09:18:09,109 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-28 09:18:09,110 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-28 09:18:09,110 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 09:17:43" (3/4) ... [2021-10-28 09:18:09,114 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-10-28 09:18:09,120 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure thread1 [2021-10-28 09:18:09,121 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure thread2 [2021-10-28 09:18:09,121 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure thread3 [2021-10-28 09:18:09,127 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 20 nodes and edges [2021-10-28 09:18:09,127 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2021-10-28 09:18:09,127 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-28 09:18:09,128 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-28 09:18:09,170 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dab0c62-9365-4979-9b8e-ad52ca18d8a1/bin/uautomizer-UnR33cPsHg/witness.graphml [2021-10-28 09:18:09,170 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-28 09:18:09,171 INFO L168 Benchmark]: Toolchain (without parser) took 27679.81 ms. Allocated memory was 119.5 MB in the beginning and 2.6 GB in the end (delta: 2.4 GB). Free memory was 83.6 MB in the beginning and 2.2 GB in the end (delta: -2.1 GB). Peak memory consumption was 306.8 MB. Max. memory is 16.1 GB. [2021-10-28 09:18:09,172 INFO L168 Benchmark]: CDTParser took 0.41 ms. Allocated memory is still 119.5 MB. Free memory was 90.8 MB in the beginning and 90.8 MB in the end (delta: 30.4 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-28 09:18:09,172 INFO L168 Benchmark]: CACSL2BoogieTranslator took 387.60 ms. Allocated memory is still 119.5 MB. Free memory was 83.3 MB in the beginning and 92.7 MB in the end (delta: -9.4 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-28 09:18:09,173 INFO L168 Benchmark]: Boogie Procedure Inliner took 84.77 ms. Allocated memory is still 119.5 MB. Free memory was 92.7 MB in the beginning and 90.6 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-28 09:18:09,173 INFO L168 Benchmark]: Boogie Preprocessor took 41.35 ms. Allocated memory is still 119.5 MB. Free memory was 90.6 MB in the beginning and 89.2 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-28 09:18:09,174 INFO L168 Benchmark]: RCFGBuilder took 1354.50 ms. Allocated memory is still 119.5 MB. Free memory was 89.2 MB in the beginning and 59.2 MB in the end (delta: 30.0 MB). Peak memory consumption was 29.4 MB. Max. memory is 16.1 GB. [2021-10-28 09:18:09,174 INFO L168 Benchmark]: TraceAbstraction took 25731.95 ms. Allocated memory was 119.5 MB in the beginning and 2.6 GB in the end (delta: 2.4 GB). Free memory was 58.6 MB in the beginning and 2.2 GB in the end (delta: -2.2 GB). Peak memory consumption was 467.0 MB. Max. memory is 16.1 GB. [2021-10-28 09:18:09,174 INFO L168 Benchmark]: Witness Printer took 60.59 ms. Allocated memory is still 2.6 GB. Free memory was 2.2 GB in the beginning and 2.2 GB in the end (delta: 3.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-28 09:18:09,177 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.41 ms. Allocated memory is still 119.5 MB. Free memory was 90.8 MB in the beginning and 90.8 MB in the end (delta: 30.4 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 387.60 ms. Allocated memory is still 119.5 MB. Free memory was 83.3 MB in the beginning and 92.7 MB in the end (delta: -9.4 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 84.77 ms. Allocated memory is still 119.5 MB. Free memory was 92.7 MB in the beginning and 90.6 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 41.35 ms. Allocated memory is still 119.5 MB. Free memory was 90.6 MB in the beginning and 89.2 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 1354.50 ms. Allocated memory is still 119.5 MB. Free memory was 89.2 MB in the beginning and 59.2 MB in the end (delta: 30.0 MB). Peak memory consumption was 29.4 MB. Max. memory is 16.1 GB. * TraceAbstraction took 25731.95 ms. Allocated memory was 119.5 MB in the beginning and 2.6 GB in the end (delta: 2.4 GB). Free memory was 58.6 MB in the beginning and 2.2 GB in the end (delta: -2.2 GB). Peak memory consumption was 467.0 MB. Max. memory is 16.1 GB. * Witness Printer took 60.59 ms. Allocated memory is still 2.6 GB. Free memory was 2.2 GB in the beginning and 2.2 GB in the end (delta: 3.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 104]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 7 procedures, 164 locations, 4 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 25.5s, OverallIterations: 13, TraceHistogramMax: 1, PathProgramHistogramMax: 6, EmptinessCheckTime: 0.0s, AutomataDifference: 15.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 304 SDtfs, 1692 SDslu, 973 SDs, 0 SdLazy, 2971 SolverSat, 23 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 2.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 953 GetRequests, 733 SyntacticMatches, 7 SemanticMatches, 213 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 540 ImplicationChecksByTransitivity, 3.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=2394occurred in iteration=11, InterpolantAutomatonStates: 144, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 0.8s SatisfiabilityAnalysisTime, 5.5s InterpolantComputationTime, 2059 NumberOfCodeBlocks, 2050 NumberOfCodeBlocksAsserted, 24 NumberOfCheckSat, 2039 ConstructedInterpolants, 0 QuantifiedInterpolants, 5299 SizeOfPredicates, 43 NumberOfNonLiveVariables, 1794 ConjunctsInSsa, 50 ConjunctsInUnsatCore, 20 InterpolantComputations, 6 PerfectInterpolantSequences, 19/34 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2021-10-28 09:18:09,239 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dab0c62-9365-4979-9b8e-ad52ca18d8a1/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...