./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/pthread-deagle/circular_buffer_bad.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 839c364b Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d87300c1-b910-4672-96fc-d5d7209eb714/bin/uautomizer-DrprNOufMa/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d87300c1-b910-4672-96fc-d5d7209eb714/bin/uautomizer-DrprNOufMa/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d87300c1-b910-4672-96fc-d5d7209eb714/bin/uautomizer-DrprNOufMa/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d87300c1-b910-4672-96fc-d5d7209eb714/bin/uautomizer-DrprNOufMa/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread-deagle/circular_buffer_bad.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d87300c1-b910-4672-96fc-d5d7209eb714/bin/uautomizer-DrprNOufMa/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d87300c1-b910-4672-96fc-d5d7209eb714/bin/uautomizer-DrprNOufMa --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 a5ee9b9286f55973fff2cea9c449f3602c5be2a48fed2e7e6cce6beebc18d9bc --- Real Ultimate output --- This is Ultimate 0.2.2-hotfix-svcomp22-839c364 [2021-12-07 01:01:53,045 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-07 01:01:53,046 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-07 01:01:53,068 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-07 01:01:53,068 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-07 01:01:53,069 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-07 01:01:53,070 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-07 01:01:53,072 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-07 01:01:53,073 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-07 01:01:53,074 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-07 01:01:53,075 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-07 01:01:53,076 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-07 01:01:53,076 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-07 01:01:53,077 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-07 01:01:53,078 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-07 01:01:53,079 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-07 01:01:53,080 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-07 01:01:53,081 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-07 01:01:53,082 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-07 01:01:53,084 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-07 01:01:53,086 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-07 01:01:53,087 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-07 01:01:53,088 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-07 01:01:53,088 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-07 01:01:53,091 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-07 01:01:53,092 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-07 01:01:53,092 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-07 01:01:53,093 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-07 01:01:53,093 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-07 01:01:53,094 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-07 01:01:53,094 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-07 01:01:53,095 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-07 01:01:53,095 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-07 01:01:53,096 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-07 01:01:53,097 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-07 01:01:53,097 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-07 01:01:53,098 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-07 01:01:53,098 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-07 01:01:53,098 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-07 01:01:53,099 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-07 01:01:53,100 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-07 01:01:53,101 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d87300c1-b910-4672-96fc-d5d7209eb714/bin/uautomizer-DrprNOufMa/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-12-07 01:01:53,124 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-07 01:01:53,125 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-07 01:01:53,125 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-07 01:01:53,125 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-07 01:01:53,126 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-07 01:01:53,126 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-07 01:01:53,126 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-07 01:01:53,127 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-07 01:01:53,127 INFO L138 SettingsManager]: * Use SBE=true [2021-12-07 01:01:53,127 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-07 01:01:53,127 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-07 01:01:53,127 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-07 01:01:53,127 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-07 01:01:53,127 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-07 01:01:53,127 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-07 01:01:53,128 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-07 01:01:53,128 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-07 01:01:53,128 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-07 01:01:53,128 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-07 01:01:53,128 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-07 01:01:53,128 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-07 01:01:53,128 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-07 01:01:53,128 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-07 01:01:53,129 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-07 01:01:53,129 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-07 01:01:53,129 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-07 01:01:53,129 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-07 01:01:53,129 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-07 01:01:53,129 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-07 01:01:53,129 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-07 01:01:53,129 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-07 01:01:53,130 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-07 01:01:53,130 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-07 01:01:53,130 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-07 01:01:53,130 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_d87300c1-b910-4672-96fc-d5d7209eb714/bin/uautomizer-DrprNOufMa/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d87300c1-b910-4672-96fc-d5d7209eb714/bin/uautomizer-DrprNOufMa Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a5ee9b9286f55973fff2cea9c449f3602c5be2a48fed2e7e6cce6beebc18d9bc [2021-12-07 01:01:53,317 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-07 01:01:53,335 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-07 01:01:53,337 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-07 01:01:53,338 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-07 01:01:53,339 INFO L275 PluginConnector]: CDTParser initialized [2021-12-07 01:01:53,340 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d87300c1-b910-4672-96fc-d5d7209eb714/bin/uautomizer-DrprNOufMa/../../sv-benchmarks/c/pthread-deagle/circular_buffer_bad.i [2021-12-07 01:01:53,391 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d87300c1-b910-4672-96fc-d5d7209eb714/bin/uautomizer-DrprNOufMa/data/dc213da79/61cca5e8103b48ac8c292c301eb782d8/FLAGb4fcb6a98 [2021-12-07 01:01:53,807 INFO L306 CDTParser]: Found 1 translation units. [2021-12-07 01:01:53,808 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d87300c1-b910-4672-96fc-d5d7209eb714/sv-benchmarks/c/pthread-deagle/circular_buffer_bad.i [2021-12-07 01:01:53,819 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d87300c1-b910-4672-96fc-d5d7209eb714/bin/uautomizer-DrprNOufMa/data/dc213da79/61cca5e8103b48ac8c292c301eb782d8/FLAGb4fcb6a98 [2021-12-07 01:01:53,828 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d87300c1-b910-4672-96fc-d5d7209eb714/bin/uautomizer-DrprNOufMa/data/dc213da79/61cca5e8103b48ac8c292c301eb782d8 [2021-12-07 01:01:53,830 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-07 01:01:53,831 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-07 01:01:53,832 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-07 01:01:53,833 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-07 01:01:53,835 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-07 01:01:53,836 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.12 01:01:53" (1/1) ... [2021-12-07 01:01:53,836 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5d0ec89e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 01:01:53, skipping insertion in model container [2021-12-07 01:01:53,837 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.12 01:01:53" (1/1) ... [2021-12-07 01:01:53,842 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-07 01:01:53,874 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-07 01:01:54,125 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d87300c1-b910-4672-96fc-d5d7209eb714/sv-benchmarks/c/pthread-deagle/circular_buffer_bad.i[30440,30453] [2021-12-07 01:01:54,132 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d87300c1-b910-4672-96fc-d5d7209eb714/sv-benchmarks/c/pthread-deagle/circular_buffer_bad.i[30895,30908] [2021-12-07 01:01:54,138 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-07 01:01:54,148 INFO L203 MainTranslator]: Completed pre-run [2021-12-07 01:01:54,184 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d87300c1-b910-4672-96fc-d5d7209eb714/sv-benchmarks/c/pthread-deagle/circular_buffer_bad.i[30440,30453] [2021-12-07 01:01:54,188 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d87300c1-b910-4672-96fc-d5d7209eb714/sv-benchmarks/c/pthread-deagle/circular_buffer_bad.i[30895,30908] [2021-12-07 01:01:54,192 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-07 01:01:54,224 INFO L208 MainTranslator]: Completed translation [2021-12-07 01:01:54,224 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 01:01:54 WrapperNode [2021-12-07 01:01:54,225 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-07 01:01:54,225 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-07 01:01:54,226 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-07 01:01:54,226 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-07 01:01:54,231 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 01:01:54" (1/1) ... [2021-12-07 01:01:54,246 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 01:01:54" (1/1) ... [2021-12-07 01:01:54,270 INFO L137 Inliner]: procedures = 168, calls = 36, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 135 [2021-12-07 01:01:54,270 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-07 01:01:54,271 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-07 01:01:54,271 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-07 01:01:54,271 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-07 01:01:54,278 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 01:01:54" (1/1) ... [2021-12-07 01:01:54,278 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 01:01:54" (1/1) ... [2021-12-07 01:01:54,281 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 01:01:54" (1/1) ... [2021-12-07 01:01:54,282 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 01:01:54" (1/1) ... [2021-12-07 01:01:54,287 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 01:01:54" (1/1) ... [2021-12-07 01:01:54,291 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 01:01:54" (1/1) ... [2021-12-07 01:01:54,292 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 01:01:54" (1/1) ... [2021-12-07 01:01:54,295 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-07 01:01:54,296 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-07 01:01:54,296 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-07 01:01:54,296 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-07 01:01:54,297 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 01:01:54" (1/1) ... [2021-12-07 01:01:54,302 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-07 01:01:54,311 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d87300c1-b910-4672-96fc-d5d7209eb714/bin/uautomizer-DrprNOufMa/z3 [2021-12-07 01:01:54,320 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d87300c1-b910-4672-96fc-d5d7209eb714/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-12-07 01:01:54,322 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d87300c1-b910-4672-96fc-d5d7209eb714/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-12-07 01:01:54,359 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-12-07 01:01:54,360 INFO L130 BoogieDeclarations]: Found specification of procedure t1 [2021-12-07 01:01:54,360 INFO L138 BoogieDeclarations]: Found implementation of procedure t1 [2021-12-07 01:01:54,360 INFO L130 BoogieDeclarations]: Found specification of procedure t2 [2021-12-07 01:01:54,360 INFO L138 BoogieDeclarations]: Found implementation of procedure t2 [2021-12-07 01:01:54,360 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-12-07 01:01:54,360 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2021-12-07 01:01:54,360 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-07 01:01:54,360 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-12-07 01:01:54,361 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-12-07 01:01:54,361 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-12-07 01:01:54,361 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-07 01:01:54,361 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-07 01:01:54,361 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-07 01:01:54,363 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-12-07 01:01:54,458 INFO L236 CfgBuilder]: Building ICFG [2021-12-07 01:01:54,459 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-07 01:01:54,627 INFO L277 CfgBuilder]: Performing block encoding [2021-12-07 01:01:54,636 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-07 01:01:54,637 INFO L301 CfgBuilder]: Removed 2 assume(true) statements. [2021-12-07 01:01:54,639 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 01:01:54 BoogieIcfgContainer [2021-12-07 01:01:54,639 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-07 01:01:54,641 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-07 01:01:54,641 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-07 01:01:54,644 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-07 01:01:54,644 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.12 01:01:53" (1/3) ... [2021-12-07 01:01:54,645 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3b5af808 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.12 01:01:54, skipping insertion in model container [2021-12-07 01:01:54,645 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 01:01:54" (2/3) ... [2021-12-07 01:01:54,645 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3b5af808 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.12 01:01:54, skipping insertion in model container [2021-12-07 01:01:54,645 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 01:01:54" (3/3) ... [2021-12-07 01:01:54,647 INFO L111 eAbstractionObserver]: Analyzing ICFG circular_buffer_bad.i [2021-12-07 01:01:54,652 WARN L149 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-12-07 01:01:54,652 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-07 01:01:54,652 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2021-12-07 01:01:54,652 INFO L513 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-12-07 01:01:54,680 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#in~arg#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-07 01:01:54,680 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#in~arg#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-07 01:01:54,680 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_~arg#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-07 01:01:54,681 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_~arg#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-07 01:01:54,681 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#in~arg#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-07 01:01:54,681 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#in~arg#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-07 01:01:54,681 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_~arg#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-07 01:01:54,681 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_~arg#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-07 01:01:54,681 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_~i~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-07 01:01:54,681 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_~i~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-07 01:01:54,682 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_~i~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-07 01:01:54,682 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_~i~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-07 01:01:54,682 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_~i~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-07 01:01:54,682 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_~i~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-07 01:01:54,682 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_~i~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-07 01:01:54,682 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_~i~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-07 01:01:54,682 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-07 01:01:54,682 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-07 01:01:54,683 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-07 01:01:54,683 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-07 01:01:54,683 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~nondet4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-07 01:01:54,683 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~nondet4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-07 01:01:54,683 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~nondet4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-07 01:01:54,683 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~nondet4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-07 01:01:54,683 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_~i~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-07 01:01:54,684 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_insertLogElement_#in~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-07 01:01:54,684 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_~i~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-07 01:01:54,684 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_insertLogElement_#in~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-07 01:01:54,684 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_~i~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-07 01:01:54,684 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~post3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-07 01:01:54,684 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_~i~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-07 01:01:54,684 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~post3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-07 01:01:54,684 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_insertLogElement_#res#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-07 01:01:54,684 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_insertLogElement_#res#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-07 01:01:54,684 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~post3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-07 01:01:54,685 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_~i~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-07 01:01:54,685 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~post3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-07 01:01:54,685 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_~i~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-07 01:01:54,685 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_insertLogElement_~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-07 01:01:54,685 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_insertLogElement_~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-07 01:01:54,685 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~post3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-07 01:01:54,685 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~post3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-07 01:01:54,685 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_insertLogElement_#in~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-07 01:01:54,685 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_insertLogElement_~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-07 01:01:54,685 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_insertLogElement_#in~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-07 01:01:54,686 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_insertLogElement_~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-07 01:01:54,686 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_insertLogElement_~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-07 01:01:54,686 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_insertLogElement_~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-07 01:01:54,686 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_insertLogElement_#res#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-07 01:01:54,686 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_insertLogElement_#res#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-07 01:01:54,686 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_insertLogElement_#res#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-07 01:01:54,686 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~ret5#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-07 01:01:54,687 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_insertLogElement_#res#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-07 01:01:54,687 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~ret5#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-07 01:01:54,687 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_insertLogElement_~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-07 01:01:54,687 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_insertLogElement_#res#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-07 01:01:54,687 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_insertLogElement_~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-07 01:01:54,687 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_insertLogElement_#res#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-07 01:01:54,687 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~ret5#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-07 01:01:54,687 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~ret5#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-07 01:01:54,688 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~ret5#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-07 01:01:54,688 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~ret5#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-07 01:01:54,688 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#in~arg#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-07 01:01:54,688 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#in~arg#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-07 01:01:54,689 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_~arg#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-07 01:01:54,689 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_~arg#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-07 01:01:54,689 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#in~arg#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-07 01:01:54,689 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#in~arg#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-07 01:01:54,689 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_~arg#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-07 01:01:54,689 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_~arg#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-07 01:01:54,689 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_~i~1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-07 01:01:54,689 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_~i~1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-07 01:01:54,689 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_~i~1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-07 01:01:54,689 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_~i~1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-07 01:01:54,690 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_~i~1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-07 01:01:54,690 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_~i~1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-07 01:01:54,690 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_~i~1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-07 01:01:54,690 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_~i~1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-07 01:01:54,690 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-07 01:01:54,690 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-07 01:01:54,690 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-07 01:01:54,690 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-07 01:01:54,690 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~nondet7#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-07 01:01:54,691 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~nondet7#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-07 01:01:54,691 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~nondet7#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-07 01:01:54,691 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~nondet7#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-07 01:01:54,691 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_removeLogElement_#res#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-07 01:01:54,691 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_removeLogElement_#res#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-07 01:01:54,691 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_~i~1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-07 01:01:54,691 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~post6#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-07 01:01:54,691 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_~i~1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-07 01:01:54,692 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~post6#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-07 01:01:54,692 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_removeLogElement_#t~mem2#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-07 01:01:54,692 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_removeLogElement_#t~post1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-07 01:01:54,692 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_removeLogElement_#t~mem2#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-07 01:01:54,692 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_removeLogElement_#t~post1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-07 01:01:54,692 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~post6#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-07 01:01:54,692 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_~i~1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-07 01:01:54,692 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~post6#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-07 01:01:54,692 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_~i~1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-07 01:01:54,692 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~post6#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-07 01:01:54,701 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~post6#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-07 01:01:54,701 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_removeLogElement_#t~post1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-07 01:01:54,701 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_removeLogElement_#t~post1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-07 01:01:54,702 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_removeLogElement_#res#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-07 01:01:54,702 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_removeLogElement_#res#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-07 01:01:54,702 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_removeLogElement_#t~post1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-07 01:01:54,702 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_removeLogElement_#t~post1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-07 01:01:54,702 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_removeLogElement_#res#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-07 01:01:54,702 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~ret8#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-07 01:01:54,702 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_removeLogElement_#res#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-07 01:01:54,702 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~ret8#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-07 01:01:54,703 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_removeLogElement_#t~post1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-07 01:01:54,703 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_removeLogElement_#t~post1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-07 01:01:54,703 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_removeLogElement_#t~mem2#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-07 01:01:54,703 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_removeLogElement_#t~mem2#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-07 01:01:54,703 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~ret8#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-07 01:01:54,703 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~ret8#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-07 01:01:54,704 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_removeLogElement_#t~mem2#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-07 01:01:54,704 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_removeLogElement_#res#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-07 01:01:54,704 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_removeLogElement_#t~mem2#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-07 01:01:54,704 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_removeLogElement_#res#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-07 01:01:54,704 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~ret8#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-07 01:01:54,704 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_~i~1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-07 01:01:54,704 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~ret8#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-07 01:01:54,704 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_~i~1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-07 01:01:54,704 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~ret8#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-07 01:01:54,705 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_~i~1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-07 01:01:54,705 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~ret8#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-07 01:01:54,705 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_~i~1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-07 01:01:54,705 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_removeLogElement_#t~mem2#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-07 01:01:54,705 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_removeLogElement_#t~mem2#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-07 01:01:54,705 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~ret8#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-07 01:01:54,705 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~ret8#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-07 01:01:54,705 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~ret8#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-07 01:01:54,706 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~ret8#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-07 01:01:54,708 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-07 01:01:54,708 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_~arg#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-07 01:01:54,709 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_~i~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-07 01:01:54,709 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_insertLogElement_#res#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-07 01:01:54,716 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_insertLogElement_#in~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-07 01:01:54,717 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~post3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-07 01:01:54,717 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_insertLogElement_~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-07 01:01:54,717 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_~arg#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-07 01:01:54,717 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~ret5#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-07 01:01:54,717 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~nondet4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-07 01:01:54,717 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-07 01:01:54,720 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_~arg#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-07 01:01:54,720 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_removeLogElement_#t~mem2#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-07 01:01:54,720 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-07 01:01:54,720 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~post6#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-07 01:01:54,721 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_removeLogElement_#t~post1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-07 01:01:54,721 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_~arg#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-07 01:01:54,721 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-07 01:01:54,721 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~nondet7#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-07 01:01:54,721 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_~i~1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-07 01:01:54,721 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_removeLogElement_#res#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-07 01:01:54,722 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~ret8#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-07 01:01:54,724 INFO L148 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2021-12-07 01:01:54,770 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-07 01:01:54,776 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 [2021-12-07 01:01:54,776 INFO L340 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2021-12-07 01:01:54,786 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 147 places, 150 transitions, 316 flow [2021-12-07 01:01:54,832 INFO L129 PetriNetUnfolder]: 10/148 cut-off events. [2021-12-07 01:01:54,832 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2021-12-07 01:01:54,837 INFO L84 FinitePrefix]: Finished finitePrefix Result has 157 conditions, 148 events. 10/148 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 257 event pairs, 0 based on Foata normal form. 0/136 useless extension candidates. Maximal degree in co-relation 93. Up to 2 conditions per place. [2021-12-07 01:01:54,837 INFO L82 GeneralOperation]: Start removeDead. Operand has 147 places, 150 transitions, 316 flow [2021-12-07 01:01:54,842 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 135 places, 138 transitions, 285 flow [2021-12-07 01:01:54,862 INFO L129 PetriNetUnfolder]: 6/110 cut-off events. [2021-12-07 01:01:54,862 INFO L130 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2021-12-07 01:01:54,862 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-07 01:01:54,863 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] [2021-12-07 01:01:54,863 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting t1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-12-07 01:01:54,867 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 01:01:54,867 INFO L85 PathProgramCache]: Analyzing trace with hash 1386578492, now seen corresponding path program 1 times [2021-12-07 01:01:54,874 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 01:01:54,874 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [330756221] [2021-12-07 01:01:54,874 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 01:01:54,875 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 01:01:54,995 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-07 01:01:54,995 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1630130265] [2021-12-07 01:01:54,996 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 01:01:54,996 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-07 01:01:54,996 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d87300c1-b910-4672-96fc-d5d7209eb714/bin/uautomizer-DrprNOufMa/z3 [2021-12-07 01:01:54,997 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d87300c1-b910-4672-96fc-d5d7209eb714/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-07 01:01:54,997 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d87300c1-b910-4672-96fc-d5d7209eb714/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-12-07 01:01:55,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:01:55,107 INFO L263 TraceCheckSpWp]: Trace formula consists of 186 conjuncts, 4 conjunts are in the unsatisfiable core [2021-12-07 01:01:55,112 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-07 01:01:55,374 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-07 01:01:55,375 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-07 01:01:55,375 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 01:01:55,375 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [330756221] [2021-12-07 01:01:55,375 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-07 01:01:55,375 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1630130265] [2021-12-07 01:01:55,376 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1630130265] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 01:01:55,376 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-07 01:01:55,376 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-07 01:01:55,377 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [669754403] [2021-12-07 01:01:55,378 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 01:01:55,384 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-07 01:01:55,384 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 01:01:55,403 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-07 01:01:55,404 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-12-07 01:01:55,406 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 127 out of 150 [2021-12-07 01:01:55,410 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 135 places, 138 transitions, 285 flow. Second operand has 4 states, 4 states have (on average 129.5) internal successors, (518), 4 states have internal predecessors, (518), 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) [2021-12-07 01:01:55,410 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-07 01:01:55,410 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 127 of 150 [2021-12-07 01:01:55,411 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-07 01:01:55,483 INFO L129 PetriNetUnfolder]: 34/287 cut-off events. [2021-12-07 01:01:55,484 INFO L130 PetriNetUnfolder]: For 16/16 co-relation queries the response was YES. [2021-12-07 01:01:55,486 INFO L84 FinitePrefix]: Finished finitePrefix Result has 362 conditions, 287 events. 34/287 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 1145 event pairs, 8 based on Foata normal form. 20/279 useless extension candidates. Maximal degree in co-relation 283. Up to 32 conditions per place. [2021-12-07 01:01:55,488 INFO L132 encePairwiseOnDemand]: 140/150 looper letters, 15 selfloop transitions, 7 changer transitions 0/137 dead transitions. [2021-12-07 01:01:55,488 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 134 places, 137 transitions, 333 flow [2021-12-07 01:01:55,489 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-07 01:01:55,490 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2021-12-07 01:01:55,497 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 539 transitions. [2021-12-07 01:01:55,500 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8983333333333333 [2021-12-07 01:01:55,500 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 539 transitions. [2021-12-07 01:01:55,501 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 539 transitions. [2021-12-07 01:01:55,502 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-07 01:01:55,504 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 539 transitions. [2021-12-07 01:01:55,508 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 134.75) internal successors, (539), 4 states have internal predecessors, (539), 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) [2021-12-07 01:01:55,513 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 150.0) internal successors, (750), 5 states have internal predecessors, (750), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 01:01:55,514 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 150.0) internal successors, (750), 5 states have internal predecessors, (750), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 01:01:55,516 INFO L186 Difference]: Start difference. First operand has 135 places, 138 transitions, 285 flow. Second operand 4 states and 539 transitions. [2021-12-07 01:01:55,516 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 134 places, 137 transitions, 333 flow [2021-12-07 01:01:55,519 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 131 places, 137 transitions, 326 flow, removed 0 selfloop flow, removed 3 redundant places. [2021-12-07 01:01:55,523 INFO L242 Difference]: Finished difference. Result has 132 places, 134 transitions, 299 flow [2021-12-07 01:01:55,525 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=150, PETRI_DIFFERENCE_MINUEND_FLOW=264, PETRI_DIFFERENCE_MINUEND_PLACES=128, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=130, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=124, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=299, PETRI_PLACES=132, PETRI_TRANSITIONS=134} [2021-12-07 01:01:55,528 INFO L334 CegarLoopForPetriNet]: 135 programPoint places, -3 predicate places. [2021-12-07 01:01:55,528 INFO L470 AbstractCegarLoop]: Abstraction has has 132 places, 134 transitions, 299 flow [2021-12-07 01:01:55,529 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 129.5) internal successors, (518), 4 states have internal predecessors, (518), 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) [2021-12-07 01:01:55,529 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-07 01:01:55,529 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] [2021-12-07 01:01:55,550 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d87300c1-b910-4672-96fc-d5d7209eb714/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-12-07 01:01:55,730 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d87300c1-b910-4672-96fc-d5d7209eb714/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-07 01:01:55,731 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-12-07 01:01:55,733 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 01:01:55,733 INFO L85 PathProgramCache]: Analyzing trace with hash 204627122, now seen corresponding path program 1 times [2021-12-07 01:01:55,734 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 01:01:55,734 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1437537352] [2021-12-07 01:01:55,735 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 01:01:55,735 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 01:01:55,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:01:55,960 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-07 01:01:55,960 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 01:01:55,961 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1437537352] [2021-12-07 01:01:55,961 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1437537352] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 01:01:55,961 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-07 01:01:55,961 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-07 01:01:55,961 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1652142777] [2021-12-07 01:01:55,961 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 01:01:55,962 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-07 01:01:55,962 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 01:01:55,962 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-07 01:01:55,962 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-07 01:01:55,963 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 134 out of 150 [2021-12-07 01:01:55,964 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 132 places, 134 transitions, 299 flow. Second operand has 3 states, 3 states have (on average 135.66666666666666) internal successors, (407), 3 states have internal predecessors, (407), 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) [2021-12-07 01:01:55,964 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-07 01:01:55,964 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 134 of 150 [2021-12-07 01:01:55,964 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-07 01:01:56,022 INFO L129 PetriNetUnfolder]: 47/421 cut-off events. [2021-12-07 01:01:56,022 INFO L130 PetriNetUnfolder]: For 21/21 co-relation queries the response was YES. [2021-12-07 01:01:56,024 INFO L84 FinitePrefix]: Finished finitePrefix Result has 536 conditions, 421 events. 47/421 cut-off events. For 21/21 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 1544 event pairs, 5 based on Foata normal form. 0/386 useless extension candidates. Maximal degree in co-relation 333. Up to 27 conditions per place. [2021-12-07 01:01:56,026 INFO L132 encePairwiseOnDemand]: 146/150 looper letters, 12 selfloop transitions, 3 changer transitions 0/139 dead transitions. [2021-12-07 01:01:56,026 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 134 places, 139 transitions, 349 flow [2021-12-07 01:01:56,026 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-07 01:01:56,026 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-12-07 01:01:56,027 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 416 transitions. [2021-12-07 01:01:56,028 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.9244444444444444 [2021-12-07 01:01:56,028 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 416 transitions. [2021-12-07 01:01:56,028 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 416 transitions. [2021-12-07 01:01:56,029 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-07 01:01:56,029 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 416 transitions. [2021-12-07 01:01:56,035 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 138.66666666666666) internal successors, (416), 3 states have internal predecessors, (416), 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) [2021-12-07 01:01:56,037 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 150.0) internal successors, (600), 4 states have internal predecessors, (600), 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) [2021-12-07 01:01:56,037 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 150.0) internal successors, (600), 4 states have internal predecessors, (600), 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) [2021-12-07 01:01:56,037 INFO L186 Difference]: Start difference. First operand has 132 places, 134 transitions, 299 flow. Second operand 3 states and 416 transitions. [2021-12-07 01:01:56,037 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 134 places, 139 transitions, 349 flow [2021-12-07 01:01:56,039 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 133 places, 139 transitions, 346 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-12-07 01:01:56,041 INFO L242 Difference]: Finished difference. Result has 134 places, 135 transitions, 311 flow [2021-12-07 01:01:56,041 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=150, PETRI_DIFFERENCE_MINUEND_FLOW=296, PETRI_DIFFERENCE_MINUEND_PLACES=131, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=134, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=131, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=311, PETRI_PLACES=134, PETRI_TRANSITIONS=135} [2021-12-07 01:01:56,042 INFO L334 CegarLoopForPetriNet]: 135 programPoint places, -1 predicate places. [2021-12-07 01:01:56,042 INFO L470 AbstractCegarLoop]: Abstraction has has 134 places, 135 transitions, 311 flow [2021-12-07 01:01:56,042 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 135.66666666666666) internal successors, (407), 3 states have internal predecessors, (407), 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) [2021-12-07 01:01:56,042 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-07 01:01:56,043 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] [2021-12-07 01:01:56,043 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-07 01:01:56,043 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-12-07 01:01:56,043 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 01:01:56,043 INFO L85 PathProgramCache]: Analyzing trace with hash -2135003898, now seen corresponding path program 1 times [2021-12-07 01:01:56,043 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 01:01:56,044 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [86716351] [2021-12-07 01:01:56,044 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 01:01:56,044 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 01:01:56,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:01:56,118 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-07 01:01:56,118 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 01:01:56,118 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [86716351] [2021-12-07 01:01:56,118 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [86716351] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 01:01:56,118 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-07 01:01:56,118 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-07 01:01:56,119 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1989791576] [2021-12-07 01:01:56,119 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 01:01:56,119 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-07 01:01:56,119 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 01:01:56,120 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-07 01:01:56,120 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-07 01:01:56,121 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 126 out of 150 [2021-12-07 01:01:56,121 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 134 places, 135 transitions, 311 flow. Second operand has 3 states, 3 states have (on average 130.66666666666666) internal successors, (392), 3 states have internal predecessors, (392), 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) [2021-12-07 01:01:56,121 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-07 01:01:56,121 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 126 of 150 [2021-12-07 01:01:56,121 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-07 01:01:56,175 INFO L129 PetriNetUnfolder]: 37/365 cut-off events. [2021-12-07 01:01:56,175 INFO L130 PetriNetUnfolder]: For 27/27 co-relation queries the response was YES. [2021-12-07 01:01:56,176 INFO L84 FinitePrefix]: Finished finitePrefix Result has 489 conditions, 365 events. 37/365 cut-off events. For 27/27 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 1376 event pairs, 6 based on Foata normal form. 7/347 useless extension candidates. Maximal degree in co-relation 280. Up to 32 conditions per place. [2021-12-07 01:01:56,177 INFO L132 encePairwiseOnDemand]: 146/150 looper letters, 16 selfloop transitions, 4 changer transitions 0/135 dead transitions. [2021-12-07 01:01:56,177 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 136 places, 135 transitions, 350 flow [2021-12-07 01:01:56,177 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-07 01:01:56,178 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-12-07 01:01:56,178 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 399 transitions. [2021-12-07 01:01:56,179 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8866666666666667 [2021-12-07 01:01:56,179 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 399 transitions. [2021-12-07 01:01:56,179 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 399 transitions. [2021-12-07 01:01:56,179 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-07 01:01:56,179 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 399 transitions. [2021-12-07 01:01:56,180 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 133.0) internal successors, (399), 3 states have internal predecessors, (399), 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) [2021-12-07 01:01:56,181 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 150.0) internal successors, (600), 4 states have internal predecessors, (600), 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) [2021-12-07 01:01:56,182 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 150.0) internal successors, (600), 4 states have internal predecessors, (600), 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) [2021-12-07 01:01:56,182 INFO L186 Difference]: Start difference. First operand has 134 places, 135 transitions, 311 flow. Second operand 3 states and 399 transitions. [2021-12-07 01:01:56,182 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 136 places, 135 transitions, 350 flow [2021-12-07 01:01:56,184 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 135 places, 135 transitions, 343 flow, removed 2 selfloop flow, removed 1 redundant places. [2021-12-07 01:01:56,186 INFO L242 Difference]: Finished difference. Result has 135 places, 133 transitions, 302 flow [2021-12-07 01:01:56,186 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=150, PETRI_DIFFERENCE_MINUEND_FLOW=294, PETRI_DIFFERENCE_MINUEND_PLACES=133, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=133, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=129, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=302, PETRI_PLACES=135, PETRI_TRANSITIONS=133} [2021-12-07 01:01:56,187 INFO L334 CegarLoopForPetriNet]: 135 programPoint places, 0 predicate places. [2021-12-07 01:01:56,187 INFO L470 AbstractCegarLoop]: Abstraction has has 135 places, 133 transitions, 302 flow [2021-12-07 01:01:56,187 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 130.66666666666666) internal successors, (392), 3 states have internal predecessors, (392), 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) [2021-12-07 01:01:56,187 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-07 01:01:56,187 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] [2021-12-07 01:01:56,187 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-12-07 01:01:56,188 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-12-07 01:01:56,188 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 01:01:56,188 INFO L85 PathProgramCache]: Analyzing trace with hash -570377209, now seen corresponding path program 1 times [2021-12-07 01:01:56,188 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 01:01:56,188 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [12325958] [2021-12-07 01:01:56,189 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 01:01:56,189 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 01:01:56,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:01:56,320 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-07 01:01:56,321 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 01:01:56,321 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [12325958] [2021-12-07 01:01:56,321 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [12325958] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 01:01:56,321 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-07 01:01:56,321 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-07 01:01:56,321 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [363963673] [2021-12-07 01:01:56,322 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 01:01:56,322 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-07 01:01:56,322 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 01:01:56,323 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-07 01:01:56,323 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-12-07 01:01:56,325 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 124 out of 150 [2021-12-07 01:01:56,326 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 135 places, 133 transitions, 302 flow. Second operand has 6 states, 6 states have (on average 126.0) internal successors, (756), 6 states have internal predecessors, (756), 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) [2021-12-07 01:01:56,326 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-07 01:01:56,326 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 124 of 150 [2021-12-07 01:01:56,326 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-07 01:01:56,434 INFO L129 PetriNetUnfolder]: 32/374 cut-off events. [2021-12-07 01:01:56,434 INFO L130 PetriNetUnfolder]: For 19/19 co-relation queries the response was YES. [2021-12-07 01:01:56,436 INFO L84 FinitePrefix]: Finished finitePrefix Result has 527 conditions, 374 events. 32/374 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 1332 event pairs, 6 based on Foata normal form. 0/346 useless extension candidates. Maximal degree in co-relation 219. Up to 43 conditions per place. [2021-12-07 01:01:56,438 INFO L132 encePairwiseOnDemand]: 144/150 looper letters, 20 selfloop transitions, 5 changer transitions 0/138 dead transitions. [2021-12-07 01:01:56,438 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 140 places, 138 transitions, 371 flow [2021-12-07 01:01:56,438 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-07 01:01:56,438 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2021-12-07 01:01:56,441 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 768 transitions. [2021-12-07 01:01:56,442 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8533333333333334 [2021-12-07 01:01:56,442 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 768 transitions. [2021-12-07 01:01:56,442 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 768 transitions. [2021-12-07 01:01:56,443 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-07 01:01:56,443 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 768 transitions. [2021-12-07 01:01:56,445 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 128.0) internal successors, (768), 6 states have internal predecessors, (768), 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) [2021-12-07 01:01:56,447 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 150.0) internal successors, (1050), 7 states have internal predecessors, (1050), 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) [2021-12-07 01:01:56,448 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 150.0) internal successors, (1050), 7 states have internal predecessors, (1050), 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) [2021-12-07 01:01:56,448 INFO L186 Difference]: Start difference. First operand has 135 places, 133 transitions, 302 flow. Second operand 6 states and 768 transitions. [2021-12-07 01:01:56,448 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 140 places, 138 transitions, 371 flow [2021-12-07 01:01:56,449 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 139 places, 138 transitions, 367 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-12-07 01:01:56,451 INFO L242 Difference]: Finished difference. Result has 140 places, 134 transitions, 319 flow [2021-12-07 01:01:56,452 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=150, PETRI_DIFFERENCE_MINUEND_FLOW=298, PETRI_DIFFERENCE_MINUEND_PLACES=134, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=133, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=128, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=319, PETRI_PLACES=140, PETRI_TRANSITIONS=134} [2021-12-07 01:01:56,453 INFO L334 CegarLoopForPetriNet]: 135 programPoint places, 5 predicate places. [2021-12-07 01:01:56,453 INFO L470 AbstractCegarLoop]: Abstraction has has 140 places, 134 transitions, 319 flow [2021-12-07 01:01:56,453 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 126.0) internal successors, (756), 6 states have internal predecessors, (756), 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) [2021-12-07 01:01:56,453 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-07 01:01:56,454 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] [2021-12-07 01:01:56,454 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-12-07 01:01:56,454 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-12-07 01:01:56,454 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 01:01:56,454 INFO L85 PathProgramCache]: Analyzing trace with hash 1847670715, now seen corresponding path program 1 times [2021-12-07 01:01:56,455 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 01:01:56,455 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1875967312] [2021-12-07 01:01:56,455 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 01:01:56,455 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 01:01:56,474 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-07 01:01:56,474 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [844612940] [2021-12-07 01:01:56,475 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 01:01:56,475 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-07 01:01:56,475 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d87300c1-b910-4672-96fc-d5d7209eb714/bin/uautomizer-DrprNOufMa/z3 [2021-12-07 01:01:56,476 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d87300c1-b910-4672-96fc-d5d7209eb714/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-07 01:01:56,476 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d87300c1-b910-4672-96fc-d5d7209eb714/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-12-07 01:01:56,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:01:56,687 INFO L263 TraceCheckSpWp]: Trace formula consists of 261 conjuncts, 14 conjunts are in the unsatisfiable core [2021-12-07 01:01:56,691 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-07 01:01:57,048 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-07 01:01:57,048 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-07 01:01:57,049 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 01:01:57,049 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1875967312] [2021-12-07 01:01:57,049 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-07 01:01:57,049 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [844612940] [2021-12-07 01:01:57,049 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [844612940] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 01:01:57,049 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-07 01:01:57,050 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-07 01:01:57,050 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [954109890] [2021-12-07 01:01:57,050 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 01:01:57,051 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-07 01:01:57,051 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 01:01:57,051 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-07 01:01:57,051 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2021-12-07 01:01:57,053 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 120 out of 150 [2021-12-07 01:01:57,054 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 140 places, 134 transitions, 319 flow. Second operand has 8 states, 8 states have (on average 122.0) internal successors, (976), 8 states have internal predecessors, (976), 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) [2021-12-07 01:01:57,054 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-07 01:01:57,054 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 120 of 150 [2021-12-07 01:01:57,055 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-07 01:01:57,215 INFO L129 PetriNetUnfolder]: 45/469 cut-off events. [2021-12-07 01:01:57,215 INFO L130 PetriNetUnfolder]: For 59/59 co-relation queries the response was YES. [2021-12-07 01:01:57,216 INFO L84 FinitePrefix]: Finished finitePrefix Result has 684 conditions, 469 events. 45/469 cut-off events. For 59/59 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 1919 event pairs, 10 based on Foata normal form. 3/441 useless extension candidates. Maximal degree in co-relation 260. Up to 49 conditions per place. [2021-12-07 01:01:57,217 INFO L132 encePairwiseOnDemand]: 141/150 looper letters, 32 selfloop transitions, 8 changer transitions 0/149 dead transitions. [2021-12-07 01:01:57,218 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 147 places, 149 transitions, 454 flow [2021-12-07 01:01:57,218 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-12-07 01:01:57,218 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-12-07 01:01:57,220 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 998 transitions. [2021-12-07 01:01:57,220 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8316666666666667 [2021-12-07 01:01:57,221 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 998 transitions. [2021-12-07 01:01:57,221 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 998 transitions. [2021-12-07 01:01:57,221 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-07 01:01:57,221 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 998 transitions. [2021-12-07 01:01:57,224 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 124.75) internal successors, (998), 8 states have internal predecessors, (998), 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) [2021-12-07 01:01:57,227 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 150.0) internal successors, (1350), 9 states have internal predecessors, (1350), 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) [2021-12-07 01:01:57,227 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 150.0) internal successors, (1350), 9 states have internal predecessors, (1350), 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) [2021-12-07 01:01:57,227 INFO L186 Difference]: Start difference. First operand has 140 places, 134 transitions, 319 flow. Second operand 8 states and 998 transitions. [2021-12-07 01:01:57,227 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 147 places, 149 transitions, 454 flow [2021-12-07 01:01:57,229 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 143 places, 149 transitions, 446 flow, removed 0 selfloop flow, removed 4 redundant places. [2021-12-07 01:01:57,231 INFO L242 Difference]: Finished difference. Result has 144 places, 136 transitions, 347 flow [2021-12-07 01:01:57,232 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=150, PETRI_DIFFERENCE_MINUEND_FLOW=311, PETRI_DIFFERENCE_MINUEND_PLACES=136, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=134, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=126, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=347, PETRI_PLACES=144, PETRI_TRANSITIONS=136} [2021-12-07 01:01:57,232 INFO L334 CegarLoopForPetriNet]: 135 programPoint places, 9 predicate places. [2021-12-07 01:01:57,233 INFO L470 AbstractCegarLoop]: Abstraction has has 144 places, 136 transitions, 347 flow [2021-12-07 01:01:57,233 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 122.0) internal successors, (976), 8 states have internal predecessors, (976), 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) [2021-12-07 01:01:57,233 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-07 01:01:57,233 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] [2021-12-07 01:01:57,263 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d87300c1-b910-4672-96fc-d5d7209eb714/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2021-12-07 01:01:57,434 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d87300c1-b910-4672-96fc-d5d7209eb714/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-07 01:01:57,435 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-12-07 01:01:57,436 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 01:01:57,436 INFO L85 PathProgramCache]: Analyzing trace with hash -1611186747, now seen corresponding path program 1 times [2021-12-07 01:01:57,436 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 01:01:57,436 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [939537334] [2021-12-07 01:01:57,437 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 01:01:57,437 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 01:01:57,491 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-07 01:01:57,492 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1200037891] [2021-12-07 01:01:57,493 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 01:01:57,494 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-07 01:01:57,494 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d87300c1-b910-4672-96fc-d5d7209eb714/bin/uautomizer-DrprNOufMa/z3 [2021-12-07 01:01:57,497 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d87300c1-b910-4672-96fc-d5d7209eb714/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-07 01:01:57,500 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d87300c1-b910-4672-96fc-d5d7209eb714/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-12-07 01:01:57,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:01:57,713 INFO L263 TraceCheckSpWp]: Trace formula consists of 270 conjuncts, 32 conjunts are in the unsatisfiable core [2021-12-07 01:01:57,716 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-07 01:01:57,753 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 6 [2021-12-07 01:01:57,873 INFO L354 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2021-12-07 01:01:57,874 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2021-12-07 01:01:57,896 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-12-07 01:01:57,896 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2021-12-07 01:01:58,008 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 15 [2021-12-07 01:01:58,179 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 15 [2021-12-07 01:01:58,208 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 51 treesize of output 44 [2021-12-07 01:01:58,515 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 59 treesize of output 53 [2021-12-07 01:01:59,131 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-07 01:01:59,131 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-07 01:01:59,131 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 01:01:59,131 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [939537334] [2021-12-07 01:01:59,131 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-07 01:01:59,132 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1200037891] [2021-12-07 01:01:59,132 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1200037891] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 01:01:59,132 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-07 01:01:59,132 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-12-07 01:01:59,132 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1587725945] [2021-12-07 01:01:59,132 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 01:01:59,132 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-12-07 01:01:59,132 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 01:01:59,133 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-12-07 01:01:59,133 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=213, Unknown=0, NotChecked=0, Total=272 [2021-12-07 01:01:59,135 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 83 out of 150 [2021-12-07 01:01:59,136 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 144 places, 136 transitions, 347 flow. Second operand has 17 states, 17 states have (on average 85.58823529411765) internal successors, (1455), 17 states have internal predecessors, (1455), 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) [2021-12-07 01:01:59,136 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-07 01:01:59,136 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 83 of 150 [2021-12-07 01:01:59,136 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-07 01:01:59,988 INFO L129 PetriNetUnfolder]: 1829/4630 cut-off events. [2021-12-07 01:01:59,988 INFO L130 PetriNetUnfolder]: For 622/622 co-relation queries the response was YES. [2021-12-07 01:01:59,997 INFO L84 FinitePrefix]: Finished finitePrefix Result has 8308 conditions, 4630 events. 1829/4630 cut-off events. For 622/622 co-relation queries the response was YES. Maximal size of possible extension queue 103. Compared 34078 event pairs, 527 based on Foata normal form. 0/4112 useless extension candidates. Maximal degree in co-relation 4244. Up to 1605 conditions per place. [2021-12-07 01:02:00,015 INFO L132 encePairwiseOnDemand]: 125/150 looper letters, 161 selfloop transitions, 54 changer transitions 21/315 dead transitions. [2021-12-07 01:02:00,016 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 166 places, 315 transitions, 1215 flow [2021-12-07 01:02:00,016 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-12-07 01:02:00,016 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2021-12-07 01:02:00,022 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 2146 transitions. [2021-12-07 01:02:00,024 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.6220289855072464 [2021-12-07 01:02:00,024 INFO L72 ComplementDD]: Start complementDD. Operand 23 states and 2146 transitions. [2021-12-07 01:02:00,025 INFO L73 IsDeterministic]: Start isDeterministic. Operand 23 states and 2146 transitions. [2021-12-07 01:02:00,026 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-07 01:02:00,027 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 23 states and 2146 transitions. [2021-12-07 01:02:00,033 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 24 states, 23 states have (on average 93.30434782608695) internal successors, (2146), 23 states have internal predecessors, (2146), 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) [2021-12-07 01:02:00,041 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 24 states, 24 states have (on average 150.0) internal successors, (3600), 24 states have internal predecessors, (3600), 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) [2021-12-07 01:02:00,042 INFO L81 ComplementDD]: Finished complementDD. Result has 24 states, 24 states have (on average 150.0) internal successors, (3600), 24 states have internal predecessors, (3600), 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) [2021-12-07 01:02:00,043 INFO L186 Difference]: Start difference. First operand has 144 places, 136 transitions, 347 flow. Second operand 23 states and 2146 transitions. [2021-12-07 01:02:00,043 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 166 places, 315 transitions, 1215 flow [2021-12-07 01:02:00,048 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 160 places, 315 transitions, 1200 flow, removed 1 selfloop flow, removed 6 redundant places. [2021-12-07 01:02:00,053 INFO L242 Difference]: Finished difference. Result has 176 places, 186 transitions, 685 flow [2021-12-07 01:02:00,053 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=150, PETRI_DIFFERENCE_MINUEND_FLOW=332, PETRI_DIFFERENCE_MINUEND_PLACES=138, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=136, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=113, PETRI_DIFFERENCE_SUBTRAHEND_STATES=23, PETRI_FLOW=685, PETRI_PLACES=176, PETRI_TRANSITIONS=186} [2021-12-07 01:02:00,054 INFO L334 CegarLoopForPetriNet]: 135 programPoint places, 41 predicate places. [2021-12-07 01:02:00,054 INFO L470 AbstractCegarLoop]: Abstraction has has 176 places, 186 transitions, 685 flow [2021-12-07 01:02:00,055 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 85.58823529411765) internal successors, (1455), 17 states have internal predecessors, (1455), 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) [2021-12-07 01:02:00,055 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-07 01:02:00,055 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] [2021-12-07 01:02:00,077 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d87300c1-b910-4672-96fc-d5d7209eb714/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2021-12-07 01:02:00,256 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d87300c1-b910-4672-96fc-d5d7209eb714/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-07 01:02:00,257 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-12-07 01:02:00,258 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 01:02:00,258 INFO L85 PathProgramCache]: Analyzing trace with hash -176387097, now seen corresponding path program 2 times [2021-12-07 01:02:00,258 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 01:02:00,258 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [166160804] [2021-12-07 01:02:00,258 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 01:02:00,259 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 01:02:00,356 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-07 01:02:00,357 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [346703286] [2021-12-07 01:02:00,358 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-12-07 01:02:00,358 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-07 01:02:00,359 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d87300c1-b910-4672-96fc-d5d7209eb714/bin/uautomizer-DrprNOufMa/z3 [2021-12-07 01:02:00,362 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d87300c1-b910-4672-96fc-d5d7209eb714/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-07 01:02:00,365 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d87300c1-b910-4672-96fc-d5d7209eb714/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-12-07 01:02:00,575 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-12-07 01:02:00,575 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-07 01:02:00,577 INFO L263 TraceCheckSpWp]: Trace formula consists of 270 conjuncts, 32 conjunts are in the unsatisfiable core [2021-12-07 01:02:00,581 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-07 01:02:00,601 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 6 [2021-12-07 01:02:00,712 INFO L354 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2021-12-07 01:02:00,712 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2021-12-07 01:02:00,734 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-12-07 01:02:00,734 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2021-12-07 01:02:00,827 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 15 [2021-12-07 01:02:00,891 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 15 [2021-12-07 01:02:01,001 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 51 treesize of output 44 [2021-12-07 01:02:01,259 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 59 treesize of output 53 [2021-12-07 01:02:01,709 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-07 01:02:01,710 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-07 01:02:01,710 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 01:02:01,710 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [166160804] [2021-12-07 01:02:01,710 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-07 01:02:01,710 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [346703286] [2021-12-07 01:02:01,710 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [346703286] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 01:02:01,710 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-07 01:02:01,710 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-12-07 01:02:01,710 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2015464453] [2021-12-07 01:02:01,710 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 01:02:01,711 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-12-07 01:02:01,711 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 01:02:01,711 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-12-07 01:02:01,711 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=222, Unknown=0, NotChecked=0, Total=272 [2021-12-07 01:02:01,713 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 83 out of 150 [2021-12-07 01:02:01,714 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 176 places, 186 transitions, 685 flow. Second operand has 17 states, 17 states have (on average 85.58823529411765) internal successors, (1455), 17 states have internal predecessors, (1455), 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) [2021-12-07 01:02:01,714 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-07 01:02:01,714 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 83 of 150 [2021-12-07 01:02:01,714 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-07 01:02:02,911 INFO L129 PetriNetUnfolder]: 2538/6846 cut-off events. [2021-12-07 01:02:02,911 INFO L130 PetriNetUnfolder]: For 6681/6713 co-relation queries the response was YES. [2021-12-07 01:02:02,932 INFO L84 FinitePrefix]: Finished finitePrefix Result has 17001 conditions, 6846 events. 2538/6846 cut-off events. For 6681/6713 co-relation queries the response was YES. Maximal size of possible extension queue 181. Compared 55900 event pairs, 597 based on Foata normal form. 20/6435 useless extension candidates. Maximal degree in co-relation 13950. Up to 1124 conditions per place. [2021-12-07 01:02:02,973 INFO L132 encePairwiseOnDemand]: 130/150 looper letters, 225 selfloop transitions, 64 changer transitions 11/379 dead transitions. [2021-12-07 01:02:02,973 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 195 places, 379 transitions, 2147 flow [2021-12-07 01:02:02,974 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-12-07 01:02:02,974 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2021-12-07 01:02:02,977 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 1897 transitions. [2021-12-07 01:02:02,978 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.6323333333333333 [2021-12-07 01:02:02,978 INFO L72 ComplementDD]: Start complementDD. Operand 20 states and 1897 transitions. [2021-12-07 01:02:02,978 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 1897 transitions. [2021-12-07 01:02:02,979 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-07 01:02:02,980 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 20 states and 1897 transitions. [2021-12-07 01:02:02,983 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 21 states, 20 states have (on average 94.85) internal successors, (1897), 20 states have internal predecessors, (1897), 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) [2021-12-07 01:02:02,988 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 21 states, 21 states have (on average 150.0) internal successors, (3150), 21 states have internal predecessors, (3150), 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) [2021-12-07 01:02:02,989 INFO L81 ComplementDD]: Finished complementDD. Result has 21 states, 21 states have (on average 150.0) internal successors, (3150), 21 states have internal predecessors, (3150), 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) [2021-12-07 01:02:02,989 INFO L186 Difference]: Start difference. First operand has 176 places, 186 transitions, 685 flow. Second operand 20 states and 1897 transitions. [2021-12-07 01:02:02,989 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 195 places, 379 transitions, 2147 flow [2021-12-07 01:02:03,006 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 191 places, 379 transitions, 2139 flow, removed 0 selfloop flow, removed 4 redundant places. [2021-12-07 01:02:03,010 INFO L242 Difference]: Finished difference. Result has 203 places, 219 transitions, 1131 flow [2021-12-07 01:02:03,011 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=150, PETRI_DIFFERENCE_MINUEND_FLOW=677, PETRI_DIFFERENCE_MINUEND_PLACES=172, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=186, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=146, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=1131, PETRI_PLACES=203, PETRI_TRANSITIONS=219} [2021-12-07 01:02:03,011 INFO L334 CegarLoopForPetriNet]: 135 programPoint places, 68 predicate places. [2021-12-07 01:02:03,011 INFO L470 AbstractCegarLoop]: Abstraction has has 203 places, 219 transitions, 1131 flow [2021-12-07 01:02:03,012 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 85.58823529411765) internal successors, (1455), 17 states have internal predecessors, (1455), 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) [2021-12-07 01:02:03,012 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-07 01:02:03,012 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] [2021-12-07 01:02:03,046 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d87300c1-b910-4672-96fc-d5d7209eb714/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2021-12-07 01:02:03,213 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d87300c1-b910-4672-96fc-d5d7209eb714/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-07 01:02:03,213 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-12-07 01:02:03,213 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 01:02:03,214 INFO L85 PathProgramCache]: Analyzing trace with hash 696162917, now seen corresponding path program 3 times [2021-12-07 01:02:03,214 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 01:02:03,214 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [968013844] [2021-12-07 01:02:03,214 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 01:02:03,214 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 01:02:03,241 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-07 01:02:03,242 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [149843922] [2021-12-07 01:02:03,242 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-12-07 01:02:03,242 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-07 01:02:03,243 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d87300c1-b910-4672-96fc-d5d7209eb714/bin/uautomizer-DrprNOufMa/z3 [2021-12-07 01:02:03,244 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d87300c1-b910-4672-96fc-d5d7209eb714/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-07 01:02:03,246 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d87300c1-b910-4672-96fc-d5d7209eb714/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-12-07 01:02:03,458 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2021-12-07 01:02:03,459 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-07 01:02:03,460 INFO L263 TraceCheckSpWp]: Trace formula consists of 270 conjuncts, 32 conjunts are in the unsatisfiable core [2021-12-07 01:02:03,463 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-07 01:02:03,480 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 6 [2021-12-07 01:02:03,566 INFO L354 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2021-12-07 01:02:03,566 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2021-12-07 01:02:03,586 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-12-07 01:02:03,587 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2021-12-07 01:02:03,674 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 15 [2021-12-07 01:02:03,704 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 15 [2021-12-07 01:02:03,814 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 51 treesize of output 44 [2021-12-07 01:02:04,009 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 59 treesize of output 53 [2021-12-07 01:02:04,453 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-07 01:02:04,454 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-07 01:02:04,454 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 01:02:04,454 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [968013844] [2021-12-07 01:02:04,454 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-07 01:02:04,454 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [149843922] [2021-12-07 01:02:04,454 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [149843922] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 01:02:04,454 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-07 01:02:04,454 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-12-07 01:02:04,454 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [856120625] [2021-12-07 01:02:04,454 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 01:02:04,455 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-12-07 01:02:04,455 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 01:02:04,455 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-12-07 01:02:04,455 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=214, Unknown=0, NotChecked=0, Total=272 [2021-12-07 01:02:04,457 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 83 out of 150 [2021-12-07 01:02:04,458 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 203 places, 219 transitions, 1131 flow. Second operand has 17 states, 17 states have (on average 85.58823529411765) internal successors, (1455), 17 states have internal predecessors, (1455), 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) [2021-12-07 01:02:04,458 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-07 01:02:04,458 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 83 of 150 [2021-12-07 01:02:04,458 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-07 01:02:06,076 INFO L129 PetriNetUnfolder]: 3723/9998 cut-off events. [2021-12-07 01:02:06,076 INFO L130 PetriNetUnfolder]: For 25946/26004 co-relation queries the response was YES. [2021-12-07 01:02:06,113 INFO L84 FinitePrefix]: Finished finitePrefix Result has 29343 conditions, 9998 events. 3723/9998 cut-off events. For 25946/26004 co-relation queries the response was YES. Maximal size of possible extension queue 263. Compared 86024 event pairs, 1362 based on Foata normal form. 3/9384 useless extension candidates. Maximal degree in co-relation 23906. Up to 3307 conditions per place. [2021-12-07 01:02:06,162 INFO L132 encePairwiseOnDemand]: 128/150 looper letters, 268 selfloop transitions, 56 changer transitions 3/406 dead transitions. [2021-12-07 01:02:06,163 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 222 places, 406 transitions, 2910 flow [2021-12-07 01:02:06,163 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-12-07 01:02:06,163 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2021-12-07 01:02:06,167 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 1890 transitions. [2021-12-07 01:02:06,168 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.63 [2021-12-07 01:02:06,168 INFO L72 ComplementDD]: Start complementDD. Operand 20 states and 1890 transitions. [2021-12-07 01:02:06,168 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 1890 transitions. [2021-12-07 01:02:06,169 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-07 01:02:06,169 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 20 states and 1890 transitions. [2021-12-07 01:02:06,173 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 21 states, 20 states have (on average 94.5) internal successors, (1890), 20 states have internal predecessors, (1890), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 01:02:06,178 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 21 states, 21 states have (on average 150.0) internal successors, (3150), 21 states have internal predecessors, (3150), 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) [2021-12-07 01:02:06,179 INFO L81 ComplementDD]: Finished complementDD. Result has 21 states, 21 states have (on average 150.0) internal successors, (3150), 21 states have internal predecessors, (3150), 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) [2021-12-07 01:02:06,179 INFO L186 Difference]: Start difference. First operand has 203 places, 219 transitions, 1131 flow. Second operand 20 states and 1890 transitions. [2021-12-07 01:02:06,179 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 222 places, 406 transitions, 2910 flow [2021-12-07 01:02:06,238 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 219 places, 406 transitions, 2832 flow, removed 36 selfloop flow, removed 3 redundant places. [2021-12-07 01:02:06,244 INFO L242 Difference]: Finished difference. Result has 232 places, 257 transitions, 1682 flow [2021-12-07 01:02:06,244 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=150, PETRI_DIFFERENCE_MINUEND_FLOW=1086, PETRI_DIFFERENCE_MINUEND_PLACES=200, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=218, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=175, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=1682, PETRI_PLACES=232, PETRI_TRANSITIONS=257} [2021-12-07 01:02:06,245 INFO L334 CegarLoopForPetriNet]: 135 programPoint places, 97 predicate places. [2021-12-07 01:02:06,245 INFO L470 AbstractCegarLoop]: Abstraction has has 232 places, 257 transitions, 1682 flow [2021-12-07 01:02:06,245 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 85.58823529411765) internal successors, (1455), 17 states have internal predecessors, (1455), 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) [2021-12-07 01:02:06,245 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-07 01:02:06,246 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] [2021-12-07 01:02:06,278 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d87300c1-b910-4672-96fc-d5d7209eb714/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2021-12-07 01:02:06,446 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d87300c1-b910-4672-96fc-d5d7209eb714/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2021-12-07 01:02:06,447 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-12-07 01:02:06,447 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 01:02:06,447 INFO L85 PathProgramCache]: Analyzing trace with hash 1697750481, now seen corresponding path program 4 times [2021-12-07 01:02:06,447 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 01:02:06,448 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1736526803] [2021-12-07 01:02:06,448 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 01:02:06,448 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 01:02:06,468 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-07 01:02:06,469 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1319195716] [2021-12-07 01:02:06,469 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-12-07 01:02:06,469 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-07 01:02:06,469 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d87300c1-b910-4672-96fc-d5d7209eb714/bin/uautomizer-DrprNOufMa/z3 [2021-12-07 01:02:06,470 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d87300c1-b910-4672-96fc-d5d7209eb714/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-07 01:02:06,472 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d87300c1-b910-4672-96fc-d5d7209eb714/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-12-07 01:02:06,702 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-12-07 01:02:06,702 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-07 01:02:06,704 INFO L263 TraceCheckSpWp]: Trace formula consists of 270 conjuncts, 34 conjunts are in the unsatisfiable core [2021-12-07 01:02:06,707 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-07 01:02:06,728 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 6 [2021-12-07 01:02:06,812 INFO L354 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2021-12-07 01:02:06,812 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2021-12-07 01:02:06,839 INFO L354 Elim1Store]: treesize reduction 8, result has 52.9 percent of original size [2021-12-07 01:02:06,839 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 16 treesize of output 18 [2021-12-07 01:02:06,946 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 15 [2021-12-07 01:02:06,976 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 15 [2021-12-07 01:02:07,092 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 51 treesize of output 44 [2021-12-07 01:02:07,266 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 59 treesize of output 53 [2021-12-07 01:02:07,631 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-07 01:02:07,631 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-07 01:02:07,631 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 01:02:07,631 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1736526803] [2021-12-07 01:02:07,631 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-07 01:02:07,632 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1319195716] [2021-12-07 01:02:07,632 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1319195716] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 01:02:07,632 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-07 01:02:07,632 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-12-07 01:02:07,632 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [749816276] [2021-12-07 01:02:07,632 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 01:02:07,632 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-12-07 01:02:07,632 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 01:02:07,633 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-12-07 01:02:07,633 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=213, Unknown=0, NotChecked=0, Total=272 [2021-12-07 01:02:07,634 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 83 out of 150 [2021-12-07 01:02:07,635 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 232 places, 257 transitions, 1682 flow. Second operand has 17 states, 17 states have (on average 85.58823529411765) internal successors, (1455), 17 states have internal predecessors, (1455), 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) [2021-12-07 01:02:07,635 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-07 01:02:07,635 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 83 of 150 [2021-12-07 01:02:07,635 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-07 01:02:10,048 INFO L129 PetriNetUnfolder]: 5193/13985 cut-off events. [2021-12-07 01:02:10,048 INFO L130 PetriNetUnfolder]: For 58432/58492 co-relation queries the response was YES. [2021-12-07 01:02:10,131 INFO L84 FinitePrefix]: Finished finitePrefix Result has 46048 conditions, 13985 events. 5193/13985 cut-off events. For 58432/58492 co-relation queries the response was YES. Maximal size of possible extension queue 376. Compared 129644 event pairs, 1804 based on Foata normal form. 26/13263 useless extension candidates. Maximal degree in co-relation 42229. Up to 5296 conditions per place. [2021-12-07 01:02:10,184 INFO L132 encePairwiseOnDemand]: 129/150 looper letters, 316 selfloop transitions, 73 changer transitions 8/476 dead transitions. [2021-12-07 01:02:10,184 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 251 places, 476 transitions, 4168 flow [2021-12-07 01:02:10,185 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-12-07 01:02:10,185 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2021-12-07 01:02:10,189 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 1913 transitions. [2021-12-07 01:02:10,189 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.6376666666666667 [2021-12-07 01:02:10,190 INFO L72 ComplementDD]: Start complementDD. Operand 20 states and 1913 transitions. [2021-12-07 01:02:10,190 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 1913 transitions. [2021-12-07 01:02:10,191 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-07 01:02:10,191 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 20 states and 1913 transitions. [2021-12-07 01:02:10,195 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 21 states, 20 states have (on average 95.65) internal successors, (1913), 20 states have internal predecessors, (1913), 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) [2021-12-07 01:02:10,199 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 21 states, 21 states have (on average 150.0) internal successors, (3150), 21 states have internal predecessors, (3150), 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) [2021-12-07 01:02:10,200 INFO L81 ComplementDD]: Finished complementDD. Result has 21 states, 21 states have (on average 150.0) internal successors, (3150), 21 states have internal predecessors, (3150), 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) [2021-12-07 01:02:10,200 INFO L186 Difference]: Start difference. First operand has 232 places, 257 transitions, 1682 flow. Second operand 20 states and 1913 transitions. [2021-12-07 01:02:10,200 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 251 places, 476 transitions, 4168 flow [2021-12-07 01:02:10,359 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 246 places, 476 transitions, 4022 flow, removed 63 selfloop flow, removed 5 redundant places. [2021-12-07 01:02:10,365 INFO L242 Difference]: Finished difference. Result has 259 places, 312 transitions, 2508 flow [2021-12-07 01:02:10,365 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=150, PETRI_DIFFERENCE_MINUEND_FLOW=1572, PETRI_DIFFERENCE_MINUEND_PLACES=227, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=257, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=211, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=2508, PETRI_PLACES=259, PETRI_TRANSITIONS=312} [2021-12-07 01:02:10,365 INFO L334 CegarLoopForPetriNet]: 135 programPoint places, 124 predicate places. [2021-12-07 01:02:10,366 INFO L470 AbstractCegarLoop]: Abstraction has has 259 places, 312 transitions, 2508 flow [2021-12-07 01:02:10,366 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 85.58823529411765) internal successors, (1455), 17 states have internal predecessors, (1455), 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) [2021-12-07 01:02:10,366 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-07 01:02:10,366 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] [2021-12-07 01:02:10,386 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d87300c1-b910-4672-96fc-d5d7209eb714/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2021-12-07 01:02:10,567 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d87300c1-b910-4672-96fc-d5d7209eb714/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-07 01:02:10,568 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-12-07 01:02:10,569 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 01:02:10,569 INFO L85 PathProgramCache]: Analyzing trace with hash -1549328667, now seen corresponding path program 5 times [2021-12-07 01:02:10,570 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 01:02:10,570 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [250997996] [2021-12-07 01:02:10,570 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 01:02:10,571 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 01:02:10,614 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-07 01:02:10,614 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1038308123] [2021-12-07 01:02:10,614 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-12-07 01:02:10,614 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-07 01:02:10,615 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d87300c1-b910-4672-96fc-d5d7209eb714/bin/uautomizer-DrprNOufMa/z3 [2021-12-07 01:02:10,616 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d87300c1-b910-4672-96fc-d5d7209eb714/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-07 01:02:10,618 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d87300c1-b910-4672-96fc-d5d7209eb714/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-12-07 01:02:10,767 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-12-07 01:02:10,767 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-07 01:02:10,769 INFO L263 TraceCheckSpWp]: Trace formula consists of 270 conjuncts, 32 conjunts are in the unsatisfiable core [2021-12-07 01:02:10,771 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-07 01:02:10,785 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 6 [2021-12-07 01:02:10,857 INFO L354 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2021-12-07 01:02:10,858 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2021-12-07 01:02:10,871 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-12-07 01:02:10,871 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2021-12-07 01:02:10,939 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 15 [2021-12-07 01:02:10,967 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 15 [2021-12-07 01:02:11,078 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 51 treesize of output 44 [2021-12-07 01:02:11,163 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 51 treesize of output 45 [2021-12-07 01:02:11,250 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-07 01:02:11,250 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-07 01:02:11,251 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 01:02:11,251 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [250997996] [2021-12-07 01:02:11,251 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-07 01:02:11,251 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1038308123] [2021-12-07 01:02:11,251 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1038308123] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 01:02:11,251 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-07 01:02:11,251 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-12-07 01:02:11,251 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [260913014] [2021-12-07 01:02:11,251 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 01:02:11,252 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-12-07 01:02:11,252 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 01:02:11,252 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-12-07 01:02:11,252 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=186, Unknown=0, NotChecked=0, Total=240 [2021-12-07 01:02:11,254 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 83 out of 150 [2021-12-07 01:02:11,256 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 259 places, 312 transitions, 2508 flow. Second operand has 16 states, 16 states have (on average 85.75) internal successors, (1372), 16 states have internal predecessors, (1372), 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) [2021-12-07 01:02:11,256 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-07 01:02:11,256 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 83 of 150 [2021-12-07 01:02:11,256 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-07 01:02:14,360 INFO L129 PetriNetUnfolder]: 6277/16839 cut-off events. [2021-12-07 01:02:14,360 INFO L130 PetriNetUnfolder]: For 95776/95868 co-relation queries the response was YES. [2021-12-07 01:02:14,472 INFO L84 FinitePrefix]: Finished finitePrefix Result has 62568 conditions, 16839 events. 6277/16839 cut-off events. For 95776/95868 co-relation queries the response was YES. Maximal size of possible extension queue 455. Compared 162889 event pairs, 2478 based on Foata normal form. 32/15922 useless extension candidates. Maximal degree in co-relation 59787. Up to 7350 conditions per place. [2021-12-07 01:02:14,529 INFO L132 encePairwiseOnDemand]: 126/150 looper letters, 325 selfloop transitions, 96 changer transitions 7/507 dead transitions. [2021-12-07 01:02:14,529 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 280 places, 507 transitions, 5225 flow [2021-12-07 01:02:14,529 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-12-07 01:02:14,529 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2021-12-07 01:02:14,531 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 2047 transitions. [2021-12-07 01:02:14,531 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.6203030303030304 [2021-12-07 01:02:14,531 INFO L72 ComplementDD]: Start complementDD. Operand 22 states and 2047 transitions. [2021-12-07 01:02:14,531 INFO L73 IsDeterministic]: Start isDeterministic. Operand 22 states and 2047 transitions. [2021-12-07 01:02:14,532 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-07 01:02:14,532 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 22 states and 2047 transitions. [2021-12-07 01:02:14,534 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 23 states, 22 states have (on average 93.04545454545455) internal successors, (2047), 22 states have internal predecessors, (2047), 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) [2021-12-07 01:02:14,538 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 23 states, 23 states have (on average 150.0) internal successors, (3450), 23 states have internal predecessors, (3450), 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) [2021-12-07 01:02:14,539 INFO L81 ComplementDD]: Finished complementDD. Result has 23 states, 23 states have (on average 150.0) internal successors, (3450), 23 states have internal predecessors, (3450), 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) [2021-12-07 01:02:14,539 INFO L186 Difference]: Start difference. First operand has 259 places, 312 transitions, 2508 flow. Second operand 22 states and 2047 transitions. [2021-12-07 01:02:14,539 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 280 places, 507 transitions, 5225 flow [2021-12-07 01:02:14,763 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 277 places, 507 transitions, 4958 flow, removed 131 selfloop flow, removed 3 redundant places. [2021-12-07 01:02:14,769 INFO L242 Difference]: Finished difference. Result has 292 places, 383 transitions, 3657 flow [2021-12-07 01:02:14,769 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=150, PETRI_DIFFERENCE_MINUEND_FLOW=2299, PETRI_DIFFERENCE_MINUEND_PLACES=256, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=312, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=244, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=3657, PETRI_PLACES=292, PETRI_TRANSITIONS=383} [2021-12-07 01:02:14,770 INFO L334 CegarLoopForPetriNet]: 135 programPoint places, 157 predicate places. [2021-12-07 01:02:14,770 INFO L470 AbstractCegarLoop]: Abstraction has has 292 places, 383 transitions, 3657 flow [2021-12-07 01:02:14,771 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 85.75) internal successors, (1372), 16 states have internal predecessors, (1372), 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) [2021-12-07 01:02:14,771 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-07 01:02:14,771 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] [2021-12-07 01:02:14,790 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d87300c1-b910-4672-96fc-d5d7209eb714/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2021-12-07 01:02:14,971 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d87300c1-b910-4672-96fc-d5d7209eb714/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2021-12-07 01:02:14,973 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-12-07 01:02:14,974 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 01:02:14,974 INFO L85 PathProgramCache]: Analyzing trace with hash 848285264, now seen corresponding path program 1 times [2021-12-07 01:02:14,975 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 01:02:14,975 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [338348295] [2021-12-07 01:02:14,975 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 01:02:14,976 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 01:02:15,014 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-07 01:02:15,014 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [772485479] [2021-12-07 01:02:15,015 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 01:02:15,015 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-07 01:02:15,015 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d87300c1-b910-4672-96fc-d5d7209eb714/bin/uautomizer-DrprNOufMa/z3 [2021-12-07 01:02:15,016 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d87300c1-b910-4672-96fc-d5d7209eb714/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-07 01:02:15,018 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d87300c1-b910-4672-96fc-d5d7209eb714/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2021-12-07 01:02:15,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:02:15,226 INFO L263 TraceCheckSpWp]: Trace formula consists of 272 conjuncts, 32 conjunts are in the unsatisfiable core [2021-12-07 01:02:15,228 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-07 01:02:15,242 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 6 [2021-12-07 01:02:15,316 INFO L354 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2021-12-07 01:02:15,317 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2021-12-07 01:02:15,331 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-12-07 01:02:15,332 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2021-12-07 01:02:15,397 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 15 [2021-12-07 01:02:15,426 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 15 [2021-12-07 01:02:15,531 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 51 treesize of output 44 [2021-12-07 01:02:15,711 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 59 treesize of output 53 [2021-12-07 01:02:16,130 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-07 01:02:16,130 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-07 01:02:16,130 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 01:02:16,130 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [338348295] [2021-12-07 01:02:16,130 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-07 01:02:16,130 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [772485479] [2021-12-07 01:02:16,130 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [772485479] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 01:02:16,130 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-07 01:02:16,130 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-12-07 01:02:16,130 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [750627744] [2021-12-07 01:02:16,131 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 01:02:16,131 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-12-07 01:02:16,131 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 01:02:16,131 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-12-07 01:02:16,131 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=213, Unknown=0, NotChecked=0, Total=272 [2021-12-07 01:02:16,132 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 83 out of 150 [2021-12-07 01:02:16,133 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 292 places, 383 transitions, 3657 flow. Second operand has 17 states, 17 states have (on average 85.6470588235294) internal successors, (1456), 17 states have internal predecessors, (1456), 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) [2021-12-07 01:02:16,133 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-07 01:02:16,134 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 83 of 150 [2021-12-07 01:02:16,134 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-07 01:02:19,691 INFO L129 PetriNetUnfolder]: 6445/17186 cut-off events. [2021-12-07 01:02:19,691 INFO L130 PetriNetUnfolder]: For 153201/153347 co-relation queries the response was YES. [2021-12-07 01:02:19,818 INFO L84 FinitePrefix]: Finished finitePrefix Result has 73574 conditions, 17186 events. 6445/17186 cut-off events. For 153201/153347 co-relation queries the response was YES. Maximal size of possible extension queue 465. Compared 166388 event pairs, 2378 based on Foata normal form. 26/16264 useless extension candidates. Maximal degree in co-relation 70386. Up to 8086 conditions per place. [2021-12-07 01:02:19,882 INFO L132 encePairwiseOnDemand]: 127/150 looper letters, 327 selfloop transitions, 102 changer transitions 3/511 dead transitions. [2021-12-07 01:02:19,882 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 310 places, 511 transitions, 5578 flow [2021-12-07 01:02:19,883 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-12-07 01:02:19,883 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2021-12-07 01:02:19,884 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 1762 transitions. [2021-12-07 01:02:19,885 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.6182456140350877 [2021-12-07 01:02:19,885 INFO L72 ComplementDD]: Start complementDD. Operand 19 states and 1762 transitions. [2021-12-07 01:02:19,885 INFO L73 IsDeterministic]: Start isDeterministic. Operand 19 states and 1762 transitions. [2021-12-07 01:02:19,885 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-07 01:02:19,885 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 19 states and 1762 transitions. [2021-12-07 01:02:19,887 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 20 states, 19 states have (on average 92.73684210526316) internal successors, (1762), 19 states have internal predecessors, (1762), 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) [2021-12-07 01:02:19,889 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 20 states, 20 states have (on average 150.0) internal successors, (3000), 20 states have internal predecessors, (3000), 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) [2021-12-07 01:02:19,890 INFO L81 ComplementDD]: Finished complementDD. Result has 20 states, 20 states have (on average 150.0) internal successors, (3000), 20 states have internal predecessors, (3000), 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) [2021-12-07 01:02:19,890 INFO L186 Difference]: Start difference. First operand has 292 places, 383 transitions, 3657 flow. Second operand 19 states and 1762 transitions. [2021-12-07 01:02:19,890 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 310 places, 511 transitions, 5578 flow [2021-12-07 01:02:20,221 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 306 places, 511 transitions, 5167 flow, removed 202 selfloop flow, removed 4 redundant places. [2021-12-07 01:02:20,227 INFO L242 Difference]: Finished difference. Result has 314 places, 423 transitions, 3983 flow [2021-12-07 01:02:20,228 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=150, PETRI_DIFFERENCE_MINUEND_FLOW=3246, PETRI_DIFFERENCE_MINUEND_PLACES=288, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=383, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=67, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=304, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=3983, PETRI_PLACES=314, PETRI_TRANSITIONS=423} [2021-12-07 01:02:20,228 INFO L334 CegarLoopForPetriNet]: 135 programPoint places, 179 predicate places. [2021-12-07 01:02:20,228 INFO L470 AbstractCegarLoop]: Abstraction has has 314 places, 423 transitions, 3983 flow [2021-12-07 01:02:20,229 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 85.6470588235294) internal successors, (1456), 17 states have internal predecessors, (1456), 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) [2021-12-07 01:02:20,229 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-07 01:02:20,229 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] [2021-12-07 01:02:20,248 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d87300c1-b910-4672-96fc-d5d7209eb714/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2021-12-07 01:02:20,429 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d87300c1-b910-4672-96fc-d5d7209eb714/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2021-12-07 01:02:20,431 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-12-07 01:02:20,431 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 01:02:20,432 INFO L85 PathProgramCache]: Analyzing trace with hash -838311545, now seen corresponding path program 1 times [2021-12-07 01:02:20,432 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 01:02:20,432 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [148209483] [2021-12-07 01:02:20,433 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 01:02:20,433 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 01:02:20,447 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-07 01:02:20,448 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1555928835] [2021-12-07 01:02:20,448 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 01:02:20,448 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-07 01:02:20,448 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d87300c1-b910-4672-96fc-d5d7209eb714/bin/uautomizer-DrprNOufMa/z3 [2021-12-07 01:02:20,449 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d87300c1-b910-4672-96fc-d5d7209eb714/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-07 01:02:20,449 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d87300c1-b910-4672-96fc-d5d7209eb714/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2021-12-07 01:02:20,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:02:20,676 INFO L263 TraceCheckSpWp]: Trace formula consists of 274 conjuncts, 32 conjunts are in the unsatisfiable core [2021-12-07 01:02:20,678 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-07 01:02:20,692 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 6 [2021-12-07 01:02:20,763 INFO L354 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2021-12-07 01:02:20,764 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2021-12-07 01:02:20,780 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-12-07 01:02:20,780 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2021-12-07 01:02:20,845 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 15 [2021-12-07 01:02:20,872 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 15 [2021-12-07 01:02:20,976 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 51 treesize of output 44 [2021-12-07 01:02:21,148 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 59 treesize of output 53 [2021-12-07 01:02:21,657 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-07 01:02:21,657 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-07 01:02:21,658 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 01:02:21,658 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [148209483] [2021-12-07 01:02:21,658 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-07 01:02:21,658 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1555928835] [2021-12-07 01:02:21,658 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1555928835] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 01:02:21,658 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-07 01:02:21,658 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-12-07 01:02:21,658 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [870144541] [2021-12-07 01:02:21,658 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 01:02:21,658 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-12-07 01:02:21,659 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 01:02:21,659 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-12-07 01:02:21,659 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=213, Unknown=0, NotChecked=0, Total=272 [2021-12-07 01:02:21,660 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 83 out of 150 [2021-12-07 01:02:21,661 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 314 places, 423 transitions, 3983 flow. Second operand has 17 states, 17 states have (on average 85.6470588235294) internal successors, (1456), 17 states have internal predecessors, (1456), 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) [2021-12-07 01:02:21,661 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-07 01:02:21,661 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 83 of 150 [2021-12-07 01:02:21,661 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-07 01:02:25,871 INFO L129 PetriNetUnfolder]: 7237/19396 cut-off events. [2021-12-07 01:02:25,872 INFO L130 PetriNetUnfolder]: For 281475/281848 co-relation queries the response was YES. [2021-12-07 01:02:26,063 INFO L84 FinitePrefix]: Finished finitePrefix Result has 99366 conditions, 19396 events. 7237/19396 cut-off events. For 281475/281848 co-relation queries the response was YES. Maximal size of possible extension queue 478. Compared 191360 event pairs, 2879 based on Foata normal form. 40/18414 useless extension candidates. Maximal degree in co-relation 97057. Up to 6876 conditions per place. [2021-12-07 01:02:26,167 INFO L132 encePairwiseOnDemand]: 130/150 looper letters, 410 selfloop transitions, 125 changer transitions 0/614 dead transitions. [2021-12-07 01:02:26,167 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 333 places, 614 transitions, 7310 flow [2021-12-07 01:02:26,168 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-12-07 01:02:26,168 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2021-12-07 01:02:26,170 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 1889 transitions. [2021-12-07 01:02:26,170 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.6296666666666667 [2021-12-07 01:02:26,171 INFO L72 ComplementDD]: Start complementDD. Operand 20 states and 1889 transitions. [2021-12-07 01:02:26,171 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 1889 transitions. [2021-12-07 01:02:26,171 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-07 01:02:26,171 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 20 states and 1889 transitions. [2021-12-07 01:02:26,173 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 21 states, 20 states have (on average 94.45) internal successors, (1889), 20 states have internal predecessors, (1889), 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) [2021-12-07 01:02:26,176 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 21 states, 21 states have (on average 150.0) internal successors, (3150), 21 states have internal predecessors, (3150), 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) [2021-12-07 01:02:26,176 INFO L81 ComplementDD]: Finished complementDD. Result has 21 states, 21 states have (on average 150.0) internal successors, (3150), 21 states have internal predecessors, (3150), 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) [2021-12-07 01:02:26,177 INFO L186 Difference]: Start difference. First operand has 314 places, 423 transitions, 3983 flow. Second operand 20 states and 1889 transitions. [2021-12-07 01:02:26,177 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 333 places, 614 transitions, 7310 flow [2021-12-07 01:02:26,816 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 325 places, 614 transitions, 6955 flow, removed 142 selfloop flow, removed 8 redundant places. [2021-12-07 01:02:26,826 INFO L242 Difference]: Finished difference. Result has 335 places, 464 transitions, 4820 flow [2021-12-07 01:02:26,826 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=150, PETRI_DIFFERENCE_MINUEND_FLOW=3720, PETRI_DIFFERENCE_MINUEND_PLACES=306, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=423, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=88, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=319, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=4820, PETRI_PLACES=335, PETRI_TRANSITIONS=464} [2021-12-07 01:02:26,827 INFO L334 CegarLoopForPetriNet]: 135 programPoint places, 200 predicate places. [2021-12-07 01:02:26,827 INFO L470 AbstractCegarLoop]: Abstraction has has 335 places, 464 transitions, 4820 flow [2021-12-07 01:02:26,827 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 85.6470588235294) internal successors, (1456), 17 states have internal predecessors, (1456), 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) [2021-12-07 01:02:26,827 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-07 01:02:26,827 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] [2021-12-07 01:02:26,847 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d87300c1-b910-4672-96fc-d5d7209eb714/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2021-12-07 01:02:27,028 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d87300c1-b910-4672-96fc-d5d7209eb714/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-07 01:02:27,029 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-12-07 01:02:27,030 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 01:02:27,031 INFO L85 PathProgramCache]: Analyzing trace with hash 1389769095, now seen corresponding path program 2 times [2021-12-07 01:02:27,031 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 01:02:27,032 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1905776256] [2021-12-07 01:02:27,032 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 01:02:27,032 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 01:02:27,072 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-07 01:02:27,072 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1312214468] [2021-12-07 01:02:27,072 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-12-07 01:02:27,072 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-07 01:02:27,072 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d87300c1-b910-4672-96fc-d5d7209eb714/bin/uautomizer-DrprNOufMa/z3 [2021-12-07 01:02:27,073 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d87300c1-b910-4672-96fc-d5d7209eb714/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-07 01:02:27,074 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d87300c1-b910-4672-96fc-d5d7209eb714/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2021-12-07 01:02:27,300 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-12-07 01:02:27,300 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-07 01:02:27,302 INFO L263 TraceCheckSpWp]: Trace formula consists of 274 conjuncts, 32 conjunts are in the unsatisfiable core [2021-12-07 01:02:27,305 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-07 01:02:27,320 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 6 [2021-12-07 01:02:27,397 INFO L354 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2021-12-07 01:02:27,397 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2021-12-07 01:02:27,415 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-12-07 01:02:27,415 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2021-12-07 01:02:27,495 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 15 [2021-12-07 01:02:27,527 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 15 [2021-12-07 01:02:27,653 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 51 treesize of output 44 [2021-12-07 01:02:27,758 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 51 treesize of output 45 [2021-12-07 01:02:27,871 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-07 01:02:27,872 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-07 01:02:27,872 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 01:02:27,872 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1905776256] [2021-12-07 01:02:27,872 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-07 01:02:27,872 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1312214468] [2021-12-07 01:02:27,872 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1312214468] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 01:02:27,872 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-07 01:02:27,872 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-12-07 01:02:27,872 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1914122094] [2021-12-07 01:02:27,872 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 01:02:27,873 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-12-07 01:02:27,873 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 01:02:27,873 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-12-07 01:02:27,873 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=186, Unknown=0, NotChecked=0, Total=240 [2021-12-07 01:02:27,875 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 83 out of 150 [2021-12-07 01:02:27,876 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 335 places, 464 transitions, 4820 flow. Second operand has 16 states, 16 states have (on average 85.8125) internal successors, (1373), 16 states have internal predecessors, (1373), 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) [2021-12-07 01:02:27,876 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-07 01:02:27,876 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 83 of 150 [2021-12-07 01:02:27,876 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-07 01:02:32,547 INFO L129 PetriNetUnfolder]: 7393/19698 cut-off events. [2021-12-07 01:02:32,547 INFO L130 PetriNetUnfolder]: For 404353/404713 co-relation queries the response was YES. [2021-12-07 01:02:32,758 INFO L84 FinitePrefix]: Finished finitePrefix Result has 111482 conditions, 19698 events. 7393/19698 cut-off events. For 404353/404713 co-relation queries the response was YES. Maximal size of possible extension queue 515. Compared 194539 event pairs, 2821 based on Foata normal form. 27/18674 useless extension candidates. Maximal degree in co-relation 108905. Up to 9764 conditions per place. [2021-12-07 01:02:32,855 INFO L132 encePairwiseOnDemand]: 129/150 looper letters, 409 selfloop transitions, 90 changer transitions 7/585 dead transitions. [2021-12-07 01:02:32,855 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 351 places, 585 transitions, 7345 flow [2021-12-07 01:02:32,856 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-12-07 01:02:32,856 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2021-12-07 01:02:32,857 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 1584 transitions. [2021-12-07 01:02:32,857 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.6211764705882353 [2021-12-07 01:02:32,857 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 1584 transitions. [2021-12-07 01:02:32,858 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 1584 transitions. [2021-12-07 01:02:32,858 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-07 01:02:32,858 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 1584 transitions. [2021-12-07 01:02:32,859 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 93.17647058823529) internal successors, (1584), 17 states have internal predecessors, (1584), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 01:02:32,861 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 150.0) internal successors, (2700), 18 states have internal predecessors, (2700), 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) [2021-12-07 01:02:32,862 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 150.0) internal successors, (2700), 18 states have internal predecessors, (2700), 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) [2021-12-07 01:02:32,862 INFO L186 Difference]: Start difference. First operand has 335 places, 464 transitions, 4820 flow. Second operand 17 states and 1584 transitions. [2021-12-07 01:02:32,862 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 351 places, 585 transitions, 7345 flow [2021-12-07 01:02:33,591 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 344 places, 585 transitions, 7073 flow, removed 109 selfloop flow, removed 7 redundant places. [2021-12-07 01:02:33,601 INFO L242 Difference]: Finished difference. Result has 348 places, 483 transitions, 5032 flow [2021-12-07 01:02:33,602 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=150, PETRI_DIFFERENCE_MINUEND_FLOW=4548, PETRI_DIFFERENCE_MINUEND_PLACES=328, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=464, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=70, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=383, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=5032, PETRI_PLACES=348, PETRI_TRANSITIONS=483} [2021-12-07 01:02:33,602 INFO L334 CegarLoopForPetriNet]: 135 programPoint places, 213 predicate places. [2021-12-07 01:02:33,602 INFO L470 AbstractCegarLoop]: Abstraction has has 348 places, 483 transitions, 5032 flow [2021-12-07 01:02:33,602 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 85.8125) internal successors, (1373), 16 states have internal predecessors, (1373), 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) [2021-12-07 01:02:33,602 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-07 01:02:33,603 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] [2021-12-07 01:02:33,622 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d87300c1-b910-4672-96fc-d5d7209eb714/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2021-12-07 01:02:33,803 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d87300c1-b910-4672-96fc-d5d7209eb714/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2021-12-07 01:02:33,804 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-12-07 01:02:33,805 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 01:02:33,805 INFO L85 PathProgramCache]: Analyzing trace with hash 1203170670, now seen corresponding path program 1 times [2021-12-07 01:02:33,805 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 01:02:33,806 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [315898816] [2021-12-07 01:02:33,806 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 01:02:33,806 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 01:02:33,843 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-07 01:02:33,844 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1083317296] [2021-12-07 01:02:33,844 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 01:02:33,844 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-07 01:02:33,844 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d87300c1-b910-4672-96fc-d5d7209eb714/bin/uautomizer-DrprNOufMa/z3 [2021-12-07 01:02:33,845 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d87300c1-b910-4672-96fc-d5d7209eb714/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-07 01:02:33,847 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d87300c1-b910-4672-96fc-d5d7209eb714/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2021-12-07 01:02:34,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:02:34,087 INFO L263 TraceCheckSpWp]: Trace formula consists of 276 conjuncts, 32 conjunts are in the unsatisfiable core [2021-12-07 01:02:34,089 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-07 01:02:34,104 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 6 [2021-12-07 01:02:34,233 INFO L354 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2021-12-07 01:02:34,233 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2021-12-07 01:02:34,248 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-12-07 01:02:34,249 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2021-12-07 01:02:34,327 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 15 [2021-12-07 01:02:34,354 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 15 [2021-12-07 01:02:34,468 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 51 treesize of output 44 [2021-12-07 01:02:34,559 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 51 treesize of output 45 [2021-12-07 01:02:34,686 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-07 01:02:34,686 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-07 01:02:34,686 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 01:02:34,686 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [315898816] [2021-12-07 01:02:34,686 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-07 01:02:34,686 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1083317296] [2021-12-07 01:02:34,686 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1083317296] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 01:02:34,686 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-07 01:02:34,687 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-12-07 01:02:34,687 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2130299753] [2021-12-07 01:02:34,687 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 01:02:34,687 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-12-07 01:02:34,687 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 01:02:34,687 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-12-07 01:02:34,688 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=186, Unknown=0, NotChecked=0, Total=240 [2021-12-07 01:02:34,689 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 83 out of 150 [2021-12-07 01:02:34,690 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 348 places, 483 transitions, 5032 flow. Second operand has 16 states, 16 states have (on average 85.875) internal successors, (1374), 16 states have internal predecessors, (1374), 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) [2021-12-07 01:02:34,690 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-07 01:02:34,690 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 83 of 150 [2021-12-07 01:02:34,690 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-07 01:02:40,030 INFO L129 PetriNetUnfolder]: 7988/21293 cut-off events. [2021-12-07 01:02:40,030 INFO L130 PetriNetUnfolder]: For 454827/455241 co-relation queries the response was YES. [2021-12-07 01:02:40,257 INFO L84 FinitePrefix]: Finished finitePrefix Result has 123240 conditions, 21293 events. 7988/21293 cut-off events. For 454827/455241 co-relation queries the response was YES. Maximal size of possible extension queue 513. Compared 213487 event pairs, 3169 based on Foata normal form. 37/20191 useless extension candidates. Maximal degree in co-relation 120548. Up to 8880 conditions per place. [2021-12-07 01:02:40,363 INFO L132 encePairwiseOnDemand]: 131/150 looper letters, 445 selfloop transitions, 111 changer transitions 4/639 dead transitions. [2021-12-07 01:02:40,363 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 368 places, 639 transitions, 8439 flow [2021-12-07 01:02:40,364 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-12-07 01:02:40,364 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2021-12-07 01:02:40,365 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 1965 transitions. [2021-12-07 01:02:40,365 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.6238095238095238 [2021-12-07 01:02:40,365 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 1965 transitions. [2021-12-07 01:02:40,366 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 1965 transitions. [2021-12-07 01:02:40,366 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-07 01:02:40,366 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 1965 transitions. [2021-12-07 01:02:40,368 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 93.57142857142857) internal successors, (1965), 21 states have internal predecessors, (1965), 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) [2021-12-07 01:02:40,370 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 150.0) internal successors, (3300), 22 states have internal predecessors, (3300), 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) [2021-12-07 01:02:40,371 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 150.0) internal successors, (3300), 22 states have internal predecessors, (3300), 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) [2021-12-07 01:02:40,371 INFO L186 Difference]: Start difference. First operand has 348 places, 483 transitions, 5032 flow. Second operand 21 states and 1965 transitions. [2021-12-07 01:02:40,371 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 368 places, 639 transitions, 8439 flow [2021-12-07 01:02:41,186 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 359 places, 639 transitions, 8240 flow, removed 49 selfloop flow, removed 9 redundant places. [2021-12-07 01:02:41,195 INFO L242 Difference]: Finished difference. Result has 365 places, 502 transitions, 5567 flow [2021-12-07 01:02:41,195 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=150, PETRI_DIFFERENCE_MINUEND_FLOW=4846, PETRI_DIFFERENCE_MINUEND_PLACES=339, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=482, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=94, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=381, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=5567, PETRI_PLACES=365, PETRI_TRANSITIONS=502} [2021-12-07 01:02:41,195 INFO L334 CegarLoopForPetriNet]: 135 programPoint places, 230 predicate places. [2021-12-07 01:02:41,195 INFO L470 AbstractCegarLoop]: Abstraction has has 365 places, 502 transitions, 5567 flow [2021-12-07 01:02:41,196 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 85.875) internal successors, (1374), 16 states have internal predecessors, (1374), 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) [2021-12-07 01:02:41,196 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-07 01:02:41,196 INFO L254 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-07 01:02:41,215 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d87300c1-b910-4672-96fc-d5d7209eb714/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2021-12-07 01:02:41,397 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d87300c1-b910-4672-96fc-d5d7209eb714/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2021-12-07 01:02:41,397 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-12-07 01:02:41,398 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 01:02:41,398 INFO L85 PathProgramCache]: Analyzing trace with hash 1059883649, now seen corresponding path program 1 times [2021-12-07 01:02:41,399 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 01:02:41,399 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1431298988] [2021-12-07 01:02:41,399 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 01:02:41,400 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 01:02:41,442 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-07 01:02:41,442 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2146340585] [2021-12-07 01:02:41,442 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 01:02:41,442 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-07 01:02:41,443 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d87300c1-b910-4672-96fc-d5d7209eb714/bin/uautomizer-DrprNOufMa/z3 [2021-12-07 01:02:41,444 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d87300c1-b910-4672-96fc-d5d7209eb714/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-07 01:02:41,445 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d87300c1-b910-4672-96fc-d5d7209eb714/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2021-12-07 01:02:41,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:02:41,514 INFO L263 TraceCheckSpWp]: Trace formula consists of 291 conjuncts, 2 conjunts are in the unsatisfiable core [2021-12-07 01:02:41,515 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-07 01:02:41,587 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-07 01:02:41,587 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-07 01:02:41,587 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 01:02:41,587 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1431298988] [2021-12-07 01:02:41,587 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-07 01:02:41,587 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2146340585] [2021-12-07 01:02:41,587 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2146340585] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 01:02:41,587 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-07 01:02:41,587 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-07 01:02:41,587 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1580549475] [2021-12-07 01:02:41,588 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 01:02:41,588 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-07 01:02:41,588 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 01:02:41,588 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-07 01:02:41,588 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-07 01:02:41,589 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 134 out of 150 [2021-12-07 01:02:41,589 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 365 places, 502 transitions, 5567 flow. Second operand has 3 states, 3 states have (on average 136.33333333333334) internal successors, (409), 3 states have internal predecessors, (409), 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) [2021-12-07 01:02:41,589 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-07 01:02:41,589 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 134 of 150 [2021-12-07 01:02:41,589 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-07 01:02:43,423 INFO L129 PetriNetUnfolder]: 2249/9425 cut-off events. [2021-12-07 01:02:43,423 INFO L130 PetriNetUnfolder]: For 172204/173626 co-relation queries the response was YES. [2021-12-07 01:02:43,538 INFO L84 FinitePrefix]: Finished finitePrefix Result has 48430 conditions, 9425 events. 2249/9425 cut-off events. For 172204/173626 co-relation queries the response was YES. Maximal size of possible extension queue 216. Compared 95038 event pairs, 1142 based on Foata normal form. 47/8833 useless extension candidates. Maximal degree in co-relation 48324. Up to 1790 conditions per place. [2021-12-07 01:02:43,578 INFO L132 encePairwiseOnDemand]: 144/150 looper letters, 23 selfloop transitions, 5 changer transitions 10/435 dead transitions. [2021-12-07 01:02:43,578 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 357 places, 435 transitions, 4771 flow [2021-12-07 01:02:43,579 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-07 01:02:43,579 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-12-07 01:02:43,579 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 415 transitions. [2021-12-07 01:02:43,580 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.9222222222222223 [2021-12-07 01:02:43,580 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 415 transitions. [2021-12-07 01:02:43,580 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 415 transitions. [2021-12-07 01:02:43,580 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-07 01:02:43,580 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 415 transitions. [2021-12-07 01:02:43,580 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 138.33333333333334) internal successors, (415), 3 states have internal predecessors, (415), 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) [2021-12-07 01:02:43,581 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 150.0) internal successors, (600), 4 states have internal predecessors, (600), 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) [2021-12-07 01:02:43,581 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 150.0) internal successors, (600), 4 states have internal predecessors, (600), 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) [2021-12-07 01:02:43,581 INFO L186 Difference]: Start difference. First operand has 365 places, 502 transitions, 5567 flow. Second operand 3 states and 415 transitions. [2021-12-07 01:02:43,581 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 357 places, 435 transitions, 4771 flow [2021-12-07 01:02:43,969 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 338 places, 435 transitions, 4321 flow, removed 166 selfloop flow, removed 19 redundant places. [2021-12-07 01:02:43,975 INFO L242 Difference]: Finished difference. Result has 340 places, 423 transitions, 4135 flow [2021-12-07 01:02:43,975 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=150, PETRI_DIFFERENCE_MINUEND_FLOW=4214, PETRI_DIFFERENCE_MINUEND_PLACES=336, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=432, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=427, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=4135, PETRI_PLACES=340, PETRI_TRANSITIONS=423} [2021-12-07 01:02:43,976 INFO L334 CegarLoopForPetriNet]: 135 programPoint places, 205 predicate places. [2021-12-07 01:02:43,976 INFO L470 AbstractCegarLoop]: Abstraction has has 340 places, 423 transitions, 4135 flow [2021-12-07 01:02:43,976 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 136.33333333333334) internal successors, (409), 3 states have internal predecessors, (409), 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) [2021-12-07 01:02:43,976 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-07 01:02:43,976 INFO L254 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-07 01:02:43,995 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d87300c1-b910-4672-96fc-d5d7209eb714/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2021-12-07 01:02:44,177 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d87300c1-b910-4672-96fc-d5d7209eb714/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2021-12-07 01:02:44,177 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-12-07 01:02:44,178 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 01:02:44,179 INFO L85 PathProgramCache]: Analyzing trace with hash -2131978286, now seen corresponding path program 1 times [2021-12-07 01:02:44,179 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 01:02:44,179 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1066684487] [2021-12-07 01:02:44,180 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 01:02:44,180 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 01:02:44,224 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-07 01:02:44,224 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [726054905] [2021-12-07 01:02:44,224 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 01:02:44,225 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-07 01:02:44,225 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d87300c1-b910-4672-96fc-d5d7209eb714/bin/uautomizer-DrprNOufMa/z3 [2021-12-07 01:02:44,226 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d87300c1-b910-4672-96fc-d5d7209eb714/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-07 01:02:44,227 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d87300c1-b910-4672-96fc-d5d7209eb714/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2021-12-07 01:02:44,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-07 01:02:44,483 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-07 01:02:44,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-07 01:02:44,596 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-07 01:02:44,596 INFO L628 BasicCegarLoop]: Counterexample is feasible [2021-12-07 01:02:44,597 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location t2Err0ASSERT_VIOLATIONERROR_FUNCTION (5 of 6 remaining) [2021-12-07 01:02:44,598 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATION (4 of 6 remaining) [2021-12-07 01:02:44,598 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATION (3 of 6 remaining) [2021-12-07 01:02:44,599 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location t1Err0ASSERT_VIOLATIONERROR_FUNCTION (2 of 6 remaining) [2021-12-07 01:02:44,599 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location t2Err0ASSERT_VIOLATIONERROR_FUNCTION (1 of 6 remaining) [2021-12-07 01:02:44,599 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location t1Err0ASSERT_VIOLATIONERROR_FUNCTION (0 of 6 remaining) [2021-12-07 01:02:44,624 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d87300c1-b910-4672-96fc-d5d7209eb714/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2021-12-07 01:02:44,799 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15,14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d87300c1-b910-4672-96fc-d5d7209eb714/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-07 01:02:44,809 INFO L732 BasicCegarLoop]: Path program histogram: [5, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-07 01:02:44,821 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2021-12-07 01:02:44,822 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-12-07 01:02:44,900 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.12 01:02:44 BasicIcfg [2021-12-07 01:02:44,900 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-12-07 01:02:44,900 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-12-07 01:02:44,900 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-12-07 01:02:44,900 INFO L275 PluginConnector]: Witness Printer initialized [2021-12-07 01:02:44,901 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 01:01:54" (3/4) ... [2021-12-07 01:02:44,902 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2021-12-07 01:02:44,953 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d87300c1-b910-4672-96fc-d5d7209eb714/bin/uautomizer-DrprNOufMa/witness.graphml [2021-12-07 01:02:44,953 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-12-07 01:02:44,954 INFO L158 Benchmark]: Toolchain (without parser) took 51122.48ms. Allocated memory was 102.8MB in the beginning and 4.7GB in the end (delta: 4.5GB). Free memory was 60.1MB in the beginning and 1.5GB in the end (delta: -1.5GB). Peak memory consumption was 3.1GB. Max. memory is 16.1GB. [2021-12-07 01:02:44,954 INFO L158 Benchmark]: CDTParser took 0.18ms. Allocated memory is still 102.8MB. Free memory was 77.9MB in the beginning and 77.7MB in the end (delta: 117.7kB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-07 01:02:44,954 INFO L158 Benchmark]: CACSL2BoogieTranslator took 392.36ms. Allocated memory is still 102.8MB. Free memory was 59.8MB in the beginning and 67.9MB in the end (delta: -8.1MB). Peak memory consumption was 8.5MB. Max. memory is 16.1GB. [2021-12-07 01:02:44,954 INFO L158 Benchmark]: Boogie Procedure Inliner took 45.12ms. Allocated memory is still 102.8MB. Free memory was 67.5MB in the beginning and 65.4MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-12-07 01:02:44,955 INFO L158 Benchmark]: Boogie Preprocessor took 23.91ms. Allocated memory is still 102.8MB. Free memory was 65.4MB in the beginning and 63.7MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-12-07 01:02:44,955 INFO L158 Benchmark]: RCFGBuilder took 343.35ms. Allocated memory is still 102.8MB. Free memory was 63.7MB in the beginning and 48.2MB in the end (delta: 15.5MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2021-12-07 01:02:44,955 INFO L158 Benchmark]: TraceAbstraction took 50259.40ms. Allocated memory was 102.8MB in the beginning and 4.7GB in the end (delta: 4.5GB). Free memory was 47.7MB in the beginning and 1.6GB in the end (delta: -1.5GB). Peak memory consumption was 3.0GB. Max. memory is 16.1GB. [2021-12-07 01:02:44,955 INFO L158 Benchmark]: Witness Printer took 52.99ms. Allocated memory is still 4.7GB. Free memory was 1.6GB in the beginning and 1.5GB in the end (delta: 18.9MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. [2021-12-07 01:02:44,957 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18ms. Allocated memory is still 102.8MB. Free memory was 77.9MB in the beginning and 77.7MB in the end (delta: 117.7kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 392.36ms. Allocated memory is still 102.8MB. Free memory was 59.8MB in the beginning and 67.9MB in the end (delta: -8.1MB). Peak memory consumption was 8.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 45.12ms. Allocated memory is still 102.8MB. Free memory was 67.5MB in the beginning and 65.4MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 23.91ms. Allocated memory is still 102.8MB. Free memory was 65.4MB in the beginning and 63.7MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 343.35ms. Allocated memory is still 102.8MB. Free memory was 63.7MB in the beginning and 48.2MB in the end (delta: 15.5MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * TraceAbstraction took 50259.40ms. Allocated memory was 102.8MB in the beginning and 4.7GB in the end (delta: 4.5GB). Free memory was 47.7MB in the beginning and 1.6GB in the end (delta: -1.5GB). Peak memory consumption was 3.0GB. Max. memory is 16.1GB. * Witness Printer took 52.99ms. Allocated memory is still 4.7GB. Free memory was 1.6GB in the beginning and 1.5GB in the end (delta: 18.9MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. * 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 - CounterExampleResult [Line: 746]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L682] 0 static char buffer[10]; VAL [buffer={3:0}] [L683] 0 static unsigned int first; VAL [buffer={3:0}, first=0] [L684] 0 static unsigned int next; VAL [buffer={3:0}, first=0, next=0] [L685] 0 static int buffer_size; VAL [buffer={3:0}, buffer_size=0, first=0, next=0] [L686] 0 _Bool send, receive; VAL [buffer={3:0}, buffer_size=0, first=0, next=0, receive=0, send=0] [L687] 0 pthread_mutex_t m; VAL [buffer={3:0}, buffer_size=0, first=0, m={4:0}, next=0, receive=0, send=0] [L756] 0 pthread_t id1, id2; VAL [buffer={3:0}, buffer_size=0, first=0, id1={6:0}, id2={5:0}, m={4:0}, next=0, receive=0, send=0] [L758] CALL 0 initLog(10) [L690] 0 buffer_size = max VAL [\old(max)=10, buffer={3:0}, buffer_size=10, first=0, m={4:0}, max=10, next=0, receive=0, send=0] [L691] EXPR 0 next = 0 VAL [\old(max)=10, buffer={3:0}, buffer_size=10, first=0, m={4:0}, max=10, next=0, receive=0, send=0] [L691] 0 first = next = 0 VAL [\old(max)=10, buffer={3:0}, buffer_size=10, first=0, m={4:0}, max=10, next=0, receive=0, send=0] [L758] RET 0 initLog(10) [L759] 0 send=1 VAL [buffer={3:0}, buffer_size=10, first=0, id1={6:0}, id2={5:0}, m={4:0}, next=0, receive=0, send=1] [L760] 0 receive=0 VAL [buffer={3:0}, buffer_size=10, first=0, id1={6:0}, id2={5:0}, m={4:0}, next=0, receive=0, send=1] [L761] FCALL, FORK 0 pthread_create(&id1, ((void *)0), t1, ((void *)0)) VAL [buffer={3:0}, buffer_size=10, first=0, id1={6:0}, id2={5:0}, m={4:0}, next=0, pthread_create(&id1, ((void *)0), t1, ((void *)0))=1, receive=0, send=1] [L723] 1 int i; VAL [arg={0:0}, arg={0:0}, buffer={3:0}, buffer_size=10, first=0, m={4:0}, next=0, receive=0, send=1] [L724] 1 i=0 VAL [arg={0:0}, arg={0:0}, buffer={3:0}, buffer_size=10, first=0, i=0, m={4:0}, next=0, receive=0, send=1] [L762] FCALL, FORK 0 pthread_create(&id2, ((void *)0), t2, ((void *)0)) VAL [buffer={3:0}, buffer_size=10, first=0, id1={6:0}, id2={5:0}, m={4:0}, next=0, pthread_create(&id2, ((void *)0), t2, ((void *)0))=2, receive=0, send=1] [L739] 2 int i; VAL [arg={0:0}, arg={0:0}, buffer={3:0}, buffer_size=10, first=0, m={4:0}, next=0, receive=0, send=1] [L740] 2 i=0 VAL [arg={0:0}, arg={0:0}, buffer={3:0}, buffer_size=10, first=0, i=0, m={4:0}, next=0, receive=0, send=1] [L740] COND TRUE 2 i<7 VAL [arg={0:0}, arg={0:0}, buffer={3:0}, buffer_size=10, first=0, i=0, m={4:0}, next=0, receive=0, send=1] [L743] COND FALSE 2 !(\read(receive)) VAL [arg={0:0}, arg={0:0}, buffer={3:0}, buffer_size=10, first=0, i=0, m={4:0}, next=0, receive=0, send=1] [L740] 2 i++ VAL [arg={0:0}, arg={0:0}, buffer={3:0}, buffer_size=10, first=0, i=0, i++=0, m={4:0}, next=0, receive=0, send=1] [L724] COND TRUE 1 i<7 VAL [arg={0:0}, arg={0:0}, buffer={3:0}, buffer_size=10, first=0, i=0, m={4:0}, next=0, receive=0, send=1] [L727] COND TRUE 1 \read(send) VAL [arg={0:0}, arg={0:0}, buffer={3:0}, buffer_size=10, first=0, i=0, m={4:0}, next=0, receive=0, send=1] [L729] CALL 1 insertLogElement(i) [L707] COND TRUE 1 next < buffer_size && buffer_size > 0 VAL [\old(b)=0, b=0, buffer={3:0}, buffer_size=10, first=0, m={4:0}, next=0, receive=0, send=1] [L709] 1 buffer[next] = b VAL [\old(b)=0, b=0, buffer={3:0}, buffer_size=10, first=0, m={4:0}, next=0, receive=0, send=1] [L740] 2 i++ VAL [arg={0:0}, arg={0:0}, buffer={3:0}, buffer_size=10, first=0, i=1, i++=0, m={4:0}, next=0, receive=0, send=1] [L710] 1 next = (next+1)%buffer_size VAL [\old(b)=0, b=0, buffer={3:0}, buffer_size=10, first=0, m={4:0}, next=1, receive=0, send=1] [L712] COND TRUE 1 next 0 && first < buffer_size VAL [buffer={3:0}, buffer_size=10, first=0, m={4:0}, next=1, receive=1, send=0] [L697] 2 first++ VAL [buffer={3:0}, buffer_size=10, first=1, m={4:0}, next=1, receive=1, send=0] [L698] EXPR 2 buffer[first-1] VAL [buffer={3:0}, buffer[first-1]=0, buffer_size=10, first=1, m={4:0}, next=1, receive=1, send=0] [L698] 2 return buffer[first-1]; VAL [\result=0, buffer={3:0}, buffer[first-1]=0, buffer_size=10, first=1, m={4:0}, next=1, receive=1, send=0] [L745] RET, EXPR 2 removeLogElement() [L745] COND FALSE 2 !(removeLogElement()==i) VAL [arg={0:0}, arg={0:0}, buffer={3:0}, buffer_size=10, first=1, i=1, m={4:0}, next=1, receive=1, removeLogElement()=0, send=0] [L746] 2 reach_error() VAL [arg={0:0}, arg={0:0}, buffer={3:0}, buffer_size=10, first=1, i=1, m={4:0}, next=1, receive=1, send=0] - UnprovableResult [Line: 761]: Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Reason: Not analyzed. - UnprovableResult [Line: 762]: Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Reason: Not analyzed. - UnprovableResult [Line: 713]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 213 locations, 6 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: 50.0s, OverallIterations: 16, TraceHistogramMax: 2, PathProgramHistogramMax: 5, EmptinessCheckTime: 0.0s, AutomataDifference: 34.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 3487 SdHoareTripleChecker+Valid, 1.7s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 3487 mSDsluCounter, 4132 SdHoareTripleChecker+Invalid, 1.4s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 3220 IncrementalHoareTripleChecker+Unchecked, 3815 mSDsCounter, 240 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 2440 IncrementalHoareTripleChecker+Invalid, 5900 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 240 mSolverCounterUnsat, 725 mSDtfsCounter, 2440 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 1331 GetRequests, 1049 SyntacticMatches, 5 SemanticMatches, 277 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1270 ImplicationChecksByTransitivity, 3.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=5567occurred in iteration=14, InterpolantAutomatonStates: 209, 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, 2.2s SatisfiabilityAnalysisTime, 9.0s InterpolantComputationTime, 1556 NumberOfCodeBlocks, 1556 NumberOfCodeBlocksAsserted, 17 NumberOfCheckSat, 1432 ConstructedInterpolants, 198 QuantifiedInterpolants, 17781 SizeOfPredicates, 134 NumberOfNonLiveVariables, 3184 ConjunctsInSsa, 310 ConjunctsInUnsatCore, 15 InterpolantComputations, 15 PerfectInterpolantSequences, 5/5 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 RESULT: Ultimate proved your program to be incorrect! [2021-12-07 01:02:44,993 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d87300c1-b910-4672-96fc-d5d7209eb714/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE