./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/weaver/popl20-nonblocking-cntr-alt.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version dbf71c69 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f294e46-6498-4d98-b829-58981429824a/bin/uautomizer-J5u9QxTXDZ/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f294e46-6498-4d98-b829-58981429824a/bin/uautomizer-J5u9QxTXDZ/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f294e46-6498-4d98-b829-58981429824a/bin/uautomizer-J5u9QxTXDZ/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f294e46-6498-4d98-b829-58981429824a/bin/uautomizer-J5u9QxTXDZ/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/popl20-nonblocking-cntr-alt.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f294e46-6498-4d98-b829-58981429824a/bin/uautomizer-J5u9QxTXDZ/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f294e46-6498-4d98-b829-58981429824a/bin/uautomizer-J5u9QxTXDZ --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash dfec19cb420bdcc992ee0af7789c6701a360457d4b79eebd70c54f4e314fbf3f --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-dbf71c6-m [2022-10-17 10:15:38,020 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-10-17 10:15:38,023 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-10-17 10:15:38,061 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-10-17 10:15:38,061 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-10-17 10:15:38,063 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-10-17 10:15:38,065 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-10-17 10:15:38,067 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-10-17 10:15:38,070 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-10-17 10:15:38,071 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-10-17 10:15:38,073 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-10-17 10:15:38,075 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-10-17 10:15:38,075 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-10-17 10:15:38,077 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-10-17 10:15:38,079 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-10-17 10:15:38,080 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-10-17 10:15:38,082 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-10-17 10:15:38,083 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-10-17 10:15:38,086 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-10-17 10:15:38,089 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-10-17 10:15:38,092 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-10-17 10:15:38,094 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-10-17 10:15:38,096 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-10-17 10:15:38,097 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-10-17 10:15:38,109 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-10-17 10:15:38,115 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-10-17 10:15:38,116 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-10-17 10:15:38,117 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-10-17 10:15:38,123 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-10-17 10:15:38,125 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-10-17 10:15:38,125 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-10-17 10:15:38,126 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-10-17 10:15:38,127 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-10-17 10:15:38,128 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-10-17 10:15:38,130 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-10-17 10:15:38,130 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-10-17 10:15:38,131 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-10-17 10:15:38,132 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-10-17 10:15:38,132 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-10-17 10:15:38,133 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-10-17 10:15:38,134 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-10-17 10:15:38,135 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f294e46-6498-4d98-b829-58981429824a/bin/uautomizer-J5u9QxTXDZ/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-10-17 10:15:38,165 INFO L113 SettingsManager]: Loading preferences was successful [2022-10-17 10:15:38,165 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-10-17 10:15:38,166 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-10-17 10:15:38,166 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-10-17 10:15:38,166 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-10-17 10:15:38,167 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-10-17 10:15:38,167 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-10-17 10:15:38,168 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-10-17 10:15:38,168 INFO L138 SettingsManager]: * Use SBE=true [2022-10-17 10:15:38,168 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-10-17 10:15:38,168 INFO L138 SettingsManager]: * sizeof long=4 [2022-10-17 10:15:38,169 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-10-17 10:15:38,169 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-10-17 10:15:38,169 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-10-17 10:15:38,169 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-10-17 10:15:38,169 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-10-17 10:15:38,170 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-10-17 10:15:38,170 INFO L138 SettingsManager]: * sizeof long double=12 [2022-10-17 10:15:38,170 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-10-17 10:15:38,170 INFO L138 SettingsManager]: * Use constant arrays=true [2022-10-17 10:15:38,171 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-10-17 10:15:38,171 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-10-17 10:15:38,171 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-10-17 10:15:38,171 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-10-17 10:15:38,171 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-17 10:15:38,172 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-10-17 10:15:38,172 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-10-17 10:15:38,172 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-10-17 10:15:38,172 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-10-17 10:15:38,173 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-10-17 10:15:38,173 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-10-17 10:15:38,173 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-10-17 10:15:38,173 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-10-17 10:15:38,174 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_9f294e46-6498-4d98-b829-58981429824a/bin/uautomizer-J5u9QxTXDZ/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f294e46-6498-4d98-b829-58981429824a/bin/uautomizer-J5u9QxTXDZ Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> dfec19cb420bdcc992ee0af7789c6701a360457d4b79eebd70c54f4e314fbf3f [2022-10-17 10:15:38,443 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-10-17 10:15:38,479 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-10-17 10:15:38,483 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-10-17 10:15:38,485 INFO L271 PluginConnector]: Initializing CDTParser... [2022-10-17 10:15:38,486 INFO L275 PluginConnector]: CDTParser initialized [2022-10-17 10:15:38,487 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f294e46-6498-4d98-b829-58981429824a/bin/uautomizer-J5u9QxTXDZ/../../sv-benchmarks/c/weaver/popl20-nonblocking-cntr-alt.wvr.c [2022-10-17 10:15:38,573 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f294e46-6498-4d98-b829-58981429824a/bin/uautomizer-J5u9QxTXDZ/data/f485947c4/c390c85dcc6b47509dc78ccef00d8ed7/FLAG8d30d7931 [2022-10-17 10:15:39,094 INFO L306 CDTParser]: Found 1 translation units. [2022-10-17 10:15:39,094 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f294e46-6498-4d98-b829-58981429824a/sv-benchmarks/c/weaver/popl20-nonblocking-cntr-alt.wvr.c [2022-10-17 10:15:39,103 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f294e46-6498-4d98-b829-58981429824a/bin/uautomizer-J5u9QxTXDZ/data/f485947c4/c390c85dcc6b47509dc78ccef00d8ed7/FLAG8d30d7931 [2022-10-17 10:15:39,417 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f294e46-6498-4d98-b829-58981429824a/bin/uautomizer-J5u9QxTXDZ/data/f485947c4/c390c85dcc6b47509dc78ccef00d8ed7 [2022-10-17 10:15:39,420 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-10-17 10:15:39,421 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-10-17 10:15:39,426 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-10-17 10:15:39,426 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-10-17 10:15:39,430 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-10-17 10:15:39,430 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.10 10:15:39" (1/1) ... [2022-10-17 10:15:39,433 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2b0d1146 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:15:39, skipping insertion in model container [2022-10-17 10:15:39,434 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.10 10:15:39" (1/1) ... [2022-10-17 10:15:39,441 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-10-17 10:15:39,462 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-10-17 10:15:39,655 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f294e46-6498-4d98-b829-58981429824a/sv-benchmarks/c/weaver/popl20-nonblocking-cntr-alt.wvr.c[2098,2111] [2022-10-17 10:15:39,659 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-17 10:15:39,667 INFO L203 MainTranslator]: Completed pre-run [2022-10-17 10:15:39,687 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_9f294e46-6498-4d98-b829-58981429824a/sv-benchmarks/c/weaver/popl20-nonblocking-cntr-alt.wvr.c[2098,2111] [2022-10-17 10:15:39,688 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-17 10:15:39,702 INFO L208 MainTranslator]: Completed translation [2022-10-17 10:15:39,703 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:15:39 WrapperNode [2022-10-17 10:15:39,703 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-10-17 10:15:39,704 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-10-17 10:15:39,704 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-10-17 10:15:39,705 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-10-17 10:15:39,712 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:15:39" (1/1) ... [2022-10-17 10:15:39,719 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:15:39" (1/1) ... [2022-10-17 10:15:39,738 INFO L138 Inliner]: procedures = 21, calls = 24, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 57 [2022-10-17 10:15:39,739 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-10-17 10:15:39,739 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-10-17 10:15:39,740 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-10-17 10:15:39,740 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-10-17 10:15:39,749 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:15:39" (1/1) ... [2022-10-17 10:15:39,749 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:15:39" (1/1) ... [2022-10-17 10:15:39,751 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:15:39" (1/1) ... [2022-10-17 10:15:39,752 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:15:39" (1/1) ... [2022-10-17 10:15:39,757 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:15:39" (1/1) ... [2022-10-17 10:15:39,761 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:15:39" (1/1) ... [2022-10-17 10:15:39,762 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:15:39" (1/1) ... [2022-10-17 10:15:39,764 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:15:39" (1/1) ... [2022-10-17 10:15:39,766 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-10-17 10:15:39,767 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-10-17 10:15:39,767 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-10-17 10:15:39,767 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-10-17 10:15:39,768 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:15:39" (1/1) ... [2022-10-17 10:15:39,775 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-17 10:15:39,789 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f294e46-6498-4d98-b829-58981429824a/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 10:15:39,802 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f294e46-6498-4d98-b829-58981429824a/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-10-17 10:15:39,821 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f294e46-6498-4d98-b829-58981429824a/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-10-17 10:15:39,853 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-10-17 10:15:39,853 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-10-17 10:15:39,853 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-10-17 10:15:39,853 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-10-17 10:15:39,854 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-10-17 10:15:39,854 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-10-17 10:15:39,854 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-10-17 10:15:39,854 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-10-17 10:15:39,854 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-10-17 10:15:39,855 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-10-17 10:15:39,855 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-10-17 10:15:39,855 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-10-17 10:15:39,855 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-10-17 10:15:39,855 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-10-17 10:15:39,857 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-10-17 10:15:39,974 INFO L235 CfgBuilder]: Building ICFG [2022-10-17 10:15:39,976 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-10-17 10:15:40,240 INFO L276 CfgBuilder]: Performing block encoding [2022-10-17 10:15:40,299 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-10-17 10:15:40,299 INFO L300 CfgBuilder]: Removed 2 assume(true) statements. [2022-10-17 10:15:40,309 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.10 10:15:40 BoogieIcfgContainer [2022-10-17 10:15:40,309 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-10-17 10:15:40,315 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-10-17 10:15:40,315 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-10-17 10:15:40,319 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-10-17 10:15:40,320 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.10 10:15:39" (1/3) ... [2022-10-17 10:15:40,321 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@a44de8f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.10 10:15:40, skipping insertion in model container [2022-10-17 10:15:40,321 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:15:39" (2/3) ... [2022-10-17 10:15:40,322 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@a44de8f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.10 10:15:40, skipping insertion in model container [2022-10-17 10:15:40,322 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.10 10:15:40" (3/3) ... [2022-10-17 10:15:40,323 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-nonblocking-cntr-alt.wvr.c [2022-10-17 10:15:40,335 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-10-17 10:15:40,349 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-10-17 10:15:40,349 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-10-17 10:15:40,349 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-10-17 10:15:40,466 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-10-17 10:15:40,517 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 87 places, 86 transitions, 188 flow [2022-10-17 10:15:40,630 INFO L130 PetriNetUnfolder]: 6/84 cut-off events. [2022-10-17 10:15:40,641 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-10-17 10:15:40,645 INFO L83 FinitePrefix]: Finished finitePrefix Result has 93 conditions, 84 events. 6/84 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 44 event pairs, 0 based on Foata normal form. 0/77 useless extension candidates. Maximal degree in co-relation 52. Up to 2 conditions per place. [2022-10-17 10:15:40,649 INFO L82 GeneralOperation]: Start removeDead. Operand has 87 places, 86 transitions, 188 flow [2022-10-17 10:15:40,654 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 76 places, 75 transitions, 162 flow [2022-10-17 10:15:40,670 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-10-17 10:15:40,678 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@7a298434, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-10-17 10:15:40,678 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2022-10-17 10:15:40,705 INFO L130 PetriNetUnfolder]: 6/74 cut-off events. [2022-10-17 10:15:40,705 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-10-17 10:15:40,706 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-10-17 10:15:40,706 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:15:40,707 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-10-17 10:15:40,713 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:15:40,722 INFO L85 PathProgramCache]: Analyzing trace with hash -1062414046, now seen corresponding path program 1 times [2022-10-17 10:15:40,732 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:15:40,733 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1782229343] [2022-10-17 10:15:40,733 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:15:40,734 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:15:40,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:15:40,986 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 10:15:40,988 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:15:40,989 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1782229343] [2022-10-17 10:15:40,990 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1782229343] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:15:40,990 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:15:40,991 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-10-17 10:15:40,993 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1635250400] [2022-10-17 10:15:40,994 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:15:41,005 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-10-17 10:15:41,006 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:15:41,035 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-10-17 10:15:41,040 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-10-17 10:15:41,045 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 75 out of 86 [2022-10-17 10:15:41,051 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 75 transitions, 162 flow. Second operand has 2 states, 2 states have (on average 77.5) internal successors, (155), 2 states have internal predecessors, (155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:15:41,054 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-10-17 10:15:41,054 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 75 of 86 [2022-10-17 10:15:41,056 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-10-17 10:15:41,109 INFO L130 PetriNetUnfolder]: 10/97 cut-off events. [2022-10-17 10:15:41,109 INFO L131 PetriNetUnfolder]: For 18/19 co-relation queries the response was YES. [2022-10-17 10:15:41,110 INFO L83 FinitePrefix]: Finished finitePrefix Result has 129 conditions, 97 events. 10/97 cut-off events. For 18/19 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 105 event pairs, 1 based on Foata normal form. 11/98 useless extension candidates. Maximal degree in co-relation 55. Up to 18 conditions per place. [2022-10-17 10:15:41,112 INFO L137 encePairwiseOnDemand]: 82/86 looper letters, 6 selfloop transitions, 0 changer transitions 2/71 dead transitions. [2022-10-17 10:15:41,112 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 71 transitions, 166 flow [2022-10-17 10:15:41,114 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-10-17 10:15:41,117 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2022-10-17 10:15:41,125 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 160 transitions. [2022-10-17 10:15:41,128 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.9302325581395349 [2022-10-17 10:15:41,128 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 160 transitions. [2022-10-17 10:15:41,129 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 160 transitions. [2022-10-17 10:15:41,131 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-10-17 10:15:41,134 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 160 transitions. [2022-10-17 10:15:41,137 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 80.0) internal successors, (160), 2 states have internal predecessors, (160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:15:41,142 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 86.0) internal successors, (258), 3 states have internal predecessors, (258), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:15:41,143 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 86.0) internal successors, (258), 3 states have internal predecessors, (258), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:15:41,145 INFO L175 Difference]: Start difference. First operand has 76 places, 75 transitions, 162 flow. Second operand 2 states and 160 transitions. [2022-10-17 10:15:41,146 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 71 transitions, 166 flow [2022-10-17 10:15:41,150 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 71 transitions, 158 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-10-17 10:15:41,154 INFO L231 Difference]: Finished difference. Result has 73 places, 69 transitions, 142 flow [2022-10-17 10:15:41,156 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=86, PETRI_DIFFERENCE_MINUEND_FLOW=146, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=71, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=71, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=142, PETRI_PLACES=73, PETRI_TRANSITIONS=69} [2022-10-17 10:15:41,161 INFO L287 CegarLoopForPetriNet]: 76 programPoint places, -3 predicate places. [2022-10-17 10:15:41,161 INFO L495 AbstractCegarLoop]: Abstraction has has 73 places, 69 transitions, 142 flow [2022-10-17 10:15:41,162 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 77.5) internal successors, (155), 2 states have internal predecessors, (155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:15:41,162 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-10-17 10:15:41,162 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:15:41,162 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-10-17 10:15:41,163 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-10-17 10:15:41,164 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:15:41,164 INFO L85 PathProgramCache]: Analyzing trace with hash -707015589, now seen corresponding path program 1 times [2022-10-17 10:15:41,164 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:15:41,165 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1889514247] [2022-10-17 10:15:41,165 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:15:41,165 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:15:41,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:15:41,759 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 10:15:41,759 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:15:41,760 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1889514247] [2022-10-17 10:15:41,761 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1889514247] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:15:41,761 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:15:41,762 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-10-17 10:15:41,763 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1822737910] [2022-10-17 10:15:41,767 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:15:41,769 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-10-17 10:15:41,769 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:15:41,770 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-10-17 10:15:41,771 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2022-10-17 10:15:41,775 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 54 out of 86 [2022-10-17 10:15:41,776 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 69 transitions, 142 flow. Second operand has 6 states, 6 states have (on average 57.166666666666664) internal successors, (343), 6 states have internal predecessors, (343), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:15:41,776 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-10-17 10:15:41,776 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 54 of 86 [2022-10-17 10:15:41,784 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-10-17 10:15:41,965 INFO L130 PetriNetUnfolder]: 62/188 cut-off events. [2022-10-17 10:15:41,966 INFO L131 PetriNetUnfolder]: For 5/5 co-relation queries the response was YES. [2022-10-17 10:15:41,968 INFO L83 FinitePrefix]: Finished finitePrefix Result has 329 conditions, 188 events. 62/188 cut-off events. For 5/5 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 544 event pairs, 26 based on Foata normal form. 0/157 useless extension candidates. Maximal degree in co-relation 326. Up to 80 conditions per place. [2022-10-17 10:15:41,971 INFO L137 encePairwiseOnDemand]: 80/86 looper letters, 28 selfloop transitions, 5 changer transitions 0/77 dead transitions. [2022-10-17 10:15:41,972 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 77 transitions, 225 flow [2022-10-17 10:15:41,972 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-10-17 10:15:41,972 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-10-17 10:15:41,979 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 358 transitions. [2022-10-17 10:15:41,982 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.6937984496124031 [2022-10-17 10:15:41,982 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 358 transitions. [2022-10-17 10:15:41,982 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 358 transitions. [2022-10-17 10:15:41,985 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-10-17 10:15:41,986 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 358 transitions. [2022-10-17 10:15:41,988 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 59.666666666666664) internal successors, (358), 6 states have internal predecessors, (358), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:15:41,993 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 86.0) internal successors, (602), 7 states have internal predecessors, (602), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:15:41,994 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 86.0) internal successors, (602), 7 states have internal predecessors, (602), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:15:41,994 INFO L175 Difference]: Start difference. First operand has 73 places, 69 transitions, 142 flow. Second operand 6 states and 358 transitions. [2022-10-17 10:15:41,994 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 77 transitions, 225 flow [2022-10-17 10:15:41,996 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 77 transitions, 225 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-10-17 10:15:41,999 INFO L231 Difference]: Finished difference. Result has 77 places, 70 transitions, 160 flow [2022-10-17 10:15:42,000 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=86, PETRI_DIFFERENCE_MINUEND_FLOW=142, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=69, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=64, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=160, PETRI_PLACES=77, PETRI_TRANSITIONS=70} [2022-10-17 10:15:42,001 INFO L287 CegarLoopForPetriNet]: 76 programPoint places, 1 predicate places. [2022-10-17 10:15:42,001 INFO L495 AbstractCegarLoop]: Abstraction has has 77 places, 70 transitions, 160 flow [2022-10-17 10:15:42,002 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 57.166666666666664) internal successors, (343), 6 states have internal predecessors, (343), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:15:42,002 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-10-17 10:15:42,003 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:15:42,003 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-10-17 10:15:42,004 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-10-17 10:15:42,005 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:15:42,006 INFO L85 PathProgramCache]: Analyzing trace with hash 31782083, now seen corresponding path program 1 times [2022-10-17 10:15:42,006 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:15:42,007 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [610628235] [2022-10-17 10:15:42,007 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:15:42,007 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:15:42,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:15:42,465 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-10-17 10:15:42,466 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:15:42,467 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [610628235] [2022-10-17 10:15:42,467 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [610628235] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:15:42,468 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:15:42,468 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-10-17 10:15:42,469 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [604120320] [2022-10-17 10:15:42,469 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:15:42,469 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-10-17 10:15:42,470 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:15:42,470 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-10-17 10:15:42,470 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2022-10-17 10:15:42,472 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 56 out of 86 [2022-10-17 10:15:42,472 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 70 transitions, 160 flow. Second operand has 6 states, 6 states have (on average 59.5) internal successors, (357), 6 states have internal predecessors, (357), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:15:42,473 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-10-17 10:15:42,473 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 56 of 86 [2022-10-17 10:15:42,473 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-10-17 10:15:42,570 INFO L130 PetriNetUnfolder]: 44/170 cut-off events. [2022-10-17 10:15:42,570 INFO L131 PetriNetUnfolder]: For 16/22 co-relation queries the response was YES. [2022-10-17 10:15:42,571 INFO L83 FinitePrefix]: Finished finitePrefix Result has 302 conditions, 170 events. 44/170 cut-off events. For 16/22 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 524 event pairs, 23 based on Foata normal form. 6/164 useless extension candidates. Maximal degree in co-relation 297. Up to 70 conditions per place. [2022-10-17 10:15:42,572 INFO L137 encePairwiseOnDemand]: 80/86 looper letters, 24 selfloop transitions, 5 changer transitions 0/76 dead transitions. [2022-10-17 10:15:42,573 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 76 transitions, 233 flow [2022-10-17 10:15:42,573 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-10-17 10:15:42,573 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-10-17 10:15:42,575 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 366 transitions. [2022-10-17 10:15:42,575 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.7093023255813954 [2022-10-17 10:15:42,575 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 366 transitions. [2022-10-17 10:15:42,575 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 366 transitions. [2022-10-17 10:15:42,576 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-10-17 10:15:42,576 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 366 transitions. [2022-10-17 10:15:42,577 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 61.0) internal successors, (366), 6 states have internal predecessors, (366), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:15:42,579 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 86.0) internal successors, (602), 7 states have internal predecessors, (602), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:15:42,580 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 86.0) internal successors, (602), 7 states have internal predecessors, (602), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:15:42,580 INFO L175 Difference]: Start difference. First operand has 77 places, 70 transitions, 160 flow. Second operand 6 states and 366 transitions. [2022-10-17 10:15:42,580 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 76 transitions, 233 flow [2022-10-17 10:15:42,582 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 76 transitions, 225 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-10-17 10:15:42,584 INFO L231 Difference]: Finished difference. Result has 79 places, 71 transitions, 170 flow [2022-10-17 10:15:42,584 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=86, PETRI_DIFFERENCE_MINUEND_FLOW=152, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=70, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=65, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=170, PETRI_PLACES=79, PETRI_TRANSITIONS=71} [2022-10-17 10:15:42,585 INFO L287 CegarLoopForPetriNet]: 76 programPoint places, 3 predicate places. [2022-10-17 10:15:42,585 INFO L495 AbstractCegarLoop]: Abstraction has has 79 places, 71 transitions, 170 flow [2022-10-17 10:15:42,586 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 59.5) internal successors, (357), 6 states have internal predecessors, (357), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:15:42,586 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-10-17 10:15:42,586 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:15:42,587 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-10-17 10:15:42,587 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-10-17 10:15:42,587 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:15:42,588 INFO L85 PathProgramCache]: Analyzing trace with hash 1873075449, now seen corresponding path program 1 times [2022-10-17 10:15:42,588 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:15:42,588 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [861161116] [2022-10-17 10:15:42,588 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:15:42,589 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:15:42,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:15:43,218 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 10:15:43,219 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:15:43,219 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [861161116] [2022-10-17 10:15:43,220 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [861161116] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-17 10:15:43,220 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1488393104] [2022-10-17 10:15:43,220 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:15:43,220 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-17 10:15:43,221 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f294e46-6498-4d98-b829-58981429824a/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 10:15:43,226 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f294e46-6498-4d98-b829-58981429824a/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-17 10:15:43,241 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f294e46-6498-4d98-b829-58981429824a/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-10-17 10:15:43,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:15:43,322 INFO L263 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 20 conjunts are in the unsatisfiable core [2022-10-17 10:15:43,329 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-17 10:15:43,959 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 10:15:43,959 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-17 10:15:44,606 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 10:15:44,607 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1488393104] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-17 10:15:44,607 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-17 10:15:44,607 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 15] total 33 [2022-10-17 10:15:44,608 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [729503534] [2022-10-17 10:15:44,608 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-17 10:15:44,611 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2022-10-17 10:15:44,611 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:15:44,612 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2022-10-17 10:15:44,613 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=174, Invalid=882, Unknown=0, NotChecked=0, Total=1056 [2022-10-17 10:15:44,619 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 51 out of 86 [2022-10-17 10:15:44,624 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 71 transitions, 170 flow. Second operand has 33 states, 33 states have (on average 52.84848484848485) internal successors, (1744), 33 states have internal predecessors, (1744), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:15:44,624 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-10-17 10:15:44,624 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 51 of 86 [2022-10-17 10:15:44,625 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-10-17 10:15:47,744 INFO L130 PetriNetUnfolder]: 258/823 cut-off events. [2022-10-17 10:15:47,744 INFO L131 PetriNetUnfolder]: For 216/216 co-relation queries the response was YES. [2022-10-17 10:15:47,748 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1759 conditions, 823 events. 258/823 cut-off events. For 216/216 co-relation queries the response was YES. Maximal size of possible extension queue 57. Compared 4950 event pairs, 2 based on Foata normal form. 4/826 useless extension candidates. Maximal degree in co-relation 1753. Up to 155 conditions per place. [2022-10-17 10:15:47,755 INFO L137 encePairwiseOnDemand]: 71/86 looper letters, 134 selfloop transitions, 117 changer transitions 49/341 dead transitions. [2022-10-17 10:15:47,755 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 142 places, 341 transitions, 1630 flow [2022-10-17 10:15:47,756 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 64 states. [2022-10-17 10:15:47,756 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 64 states. [2022-10-17 10:15:47,766 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 3541 transitions. [2022-10-17 10:15:47,769 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.6433502906976745 [2022-10-17 10:15:47,770 INFO L72 ComplementDD]: Start complementDD. Operand 64 states and 3541 transitions. [2022-10-17 10:15:47,771 INFO L73 IsDeterministic]: Start isDeterministic. Operand 64 states and 3541 transitions. [2022-10-17 10:15:47,774 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-10-17 10:15:47,775 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 64 states and 3541 transitions. [2022-10-17 10:15:47,786 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 65 states, 64 states have (on average 55.328125) internal successors, (3541), 64 states have internal predecessors, (3541), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:15:47,801 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 65 states, 65 states have (on average 86.0) internal successors, (5590), 65 states have internal predecessors, (5590), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:15:47,806 INFO L81 ComplementDD]: Finished complementDD. Result has 65 states, 65 states have (on average 86.0) internal successors, (5590), 65 states have internal predecessors, (5590), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:15:47,807 INFO L175 Difference]: Start difference. First operand has 79 places, 71 transitions, 170 flow. Second operand 64 states and 3541 transitions. [2022-10-17 10:15:47,807 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 142 places, 341 transitions, 1630 flow [2022-10-17 10:15:47,814 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 138 places, 341 transitions, 1580 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-10-17 10:15:47,823 INFO L231 Difference]: Finished difference. Result has 168 places, 202 transitions, 991 flow [2022-10-17 10:15:47,823 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=86, PETRI_DIFFERENCE_MINUEND_FLOW=162, PETRI_DIFFERENCE_MINUEND_PLACES=75, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=71, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=64, PETRI_FLOW=991, PETRI_PLACES=168, PETRI_TRANSITIONS=202} [2022-10-17 10:15:47,825 INFO L287 CegarLoopForPetriNet]: 76 programPoint places, 92 predicate places. [2022-10-17 10:15:47,825 INFO L495 AbstractCegarLoop]: Abstraction has has 168 places, 202 transitions, 991 flow [2022-10-17 10:15:47,826 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 52.84848484848485) internal successors, (1744), 33 states have internal predecessors, (1744), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:15:47,826 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-10-17 10:15:47,827 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:15:47,864 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f294e46-6498-4d98-b829-58981429824a/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-10-17 10:15:48,053 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f294e46-6498-4d98-b829-58981429824a/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-17 10:15:48,053 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-10-17 10:15:48,054 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:15:48,054 INFO L85 PathProgramCache]: Analyzing trace with hash 1569915595, now seen corresponding path program 2 times [2022-10-17 10:15:48,054 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:15:48,054 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1315296665] [2022-10-17 10:15:48,054 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:15:48,055 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:15:48,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:15:48,619 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 10:15:48,620 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:15:48,620 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1315296665] [2022-10-17 10:15:48,620 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1315296665] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-17 10:15:48,620 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1767995468] [2022-10-17 10:15:48,620 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-10-17 10:15:48,621 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-17 10:15:48,621 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f294e46-6498-4d98-b829-58981429824a/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 10:15:48,629 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f294e46-6498-4d98-b829-58981429824a/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-17 10:15:48,652 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f294e46-6498-4d98-b829-58981429824a/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-10-17 10:15:48,710 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-10-17 10:15:48,711 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-10-17 10:15:48,712 INFO L263 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 20 conjunts are in the unsatisfiable core [2022-10-17 10:15:48,718 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-17 10:15:49,168 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 10:15:49,168 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-17 10:15:49,734 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 10:15:49,734 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1767995468] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-17 10:15:49,734 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-17 10:15:49,734 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 15] total 32 [2022-10-17 10:15:49,735 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1944557349] [2022-10-17 10:15:49,735 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-17 10:15:49,735 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-10-17 10:15:49,735 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:15:49,736 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-10-17 10:15:49,737 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=158, Invalid=834, Unknown=0, NotChecked=0, Total=992 [2022-10-17 10:15:49,740 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 51 out of 86 [2022-10-17 10:15:49,743 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 168 places, 202 transitions, 991 flow. Second operand has 32 states, 32 states have (on average 52.875) internal successors, (1692), 32 states have internal predecessors, (1692), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:15:49,743 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-10-17 10:15:49,743 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 51 of 86 [2022-10-17 10:15:49,743 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-10-17 10:15:54,682 INFO L130 PetriNetUnfolder]: 452/1591 cut-off events. [2022-10-17 10:15:54,683 INFO L131 PetriNetUnfolder]: For 3920/3920 co-relation queries the response was YES. [2022-10-17 10:15:54,694 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5255 conditions, 1591 events. 452/1591 cut-off events. For 3920/3920 co-relation queries the response was YES. Maximal size of possible extension queue 103. Compared 12002 event pairs, 43 based on Foata normal form. 9/1595 useless extension candidates. Maximal degree in co-relation 5219. Up to 381 conditions per place. [2022-10-17 10:15:54,705 INFO L137 encePairwiseOnDemand]: 70/86 looper letters, 227 selfloop transitions, 266 changer transitions 56/590 dead transitions. [2022-10-17 10:15:54,706 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 235 places, 590 transitions, 4581 flow [2022-10-17 10:15:54,706 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 87 states. [2022-10-17 10:15:54,706 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 87 states. [2022-10-17 10:15:54,715 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 4757 transitions. [2022-10-17 10:15:54,718 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.6357925688318632 [2022-10-17 10:15:54,718 INFO L72 ComplementDD]: Start complementDD. Operand 87 states and 4757 transitions. [2022-10-17 10:15:54,718 INFO L73 IsDeterministic]: Start isDeterministic. Operand 87 states and 4757 transitions. [2022-10-17 10:15:54,721 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-10-17 10:15:54,721 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 87 states and 4757 transitions. [2022-10-17 10:15:54,734 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 88 states, 87 states have (on average 54.67816091954023) internal successors, (4757), 87 states have internal predecessors, (4757), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:15:54,749 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 88 states, 88 states have (on average 86.0) internal successors, (7568), 88 states have internal predecessors, (7568), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:15:54,753 INFO L81 ComplementDD]: Finished complementDD. Result has 88 states, 88 states have (on average 86.0) internal successors, (7568), 88 states have internal predecessors, (7568), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:15:54,753 INFO L175 Difference]: Start difference. First operand has 168 places, 202 transitions, 991 flow. Second operand 87 states and 4757 transitions. [2022-10-17 10:15:54,753 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 235 places, 590 transitions, 4581 flow [2022-10-17 10:15:54,791 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 219 places, 590 transitions, 4047 flow, removed 248 selfloop flow, removed 16 redundant places. [2022-10-17 10:15:54,803 INFO L231 Difference]: Finished difference. Result has 269 places, 428 transitions, 3374 flow [2022-10-17 10:15:54,804 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=86, PETRI_DIFFERENCE_MINUEND_FLOW=911, PETRI_DIFFERENCE_MINUEND_PLACES=133, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=202, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=76, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=66, PETRI_DIFFERENCE_SUBTRAHEND_STATES=87, PETRI_FLOW=3374, PETRI_PLACES=269, PETRI_TRANSITIONS=428} [2022-10-17 10:15:54,805 INFO L287 CegarLoopForPetriNet]: 76 programPoint places, 193 predicate places. [2022-10-17 10:15:54,805 INFO L495 AbstractCegarLoop]: Abstraction has has 269 places, 428 transitions, 3374 flow [2022-10-17 10:15:54,806 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 52.875) internal successors, (1692), 32 states have internal predecessors, (1692), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:15:54,806 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-10-17 10:15:54,806 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:15:54,840 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f294e46-6498-4d98-b829-58981429824a/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-10-17 10:15:55,020 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f294e46-6498-4d98-b829-58981429824a/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-17 10:15:55,020 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-10-17 10:15:55,021 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:15:55,021 INFO L85 PathProgramCache]: Analyzing trace with hash 48036111, now seen corresponding path program 3 times [2022-10-17 10:15:55,021 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:15:55,021 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1436785803] [2022-10-17 10:15:55,021 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:15:55,022 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:15:55,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:15:55,476 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 10:15:55,477 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:15:55,477 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1436785803] [2022-10-17 10:15:55,477 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1436785803] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-17 10:15:55,477 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1484233945] [2022-10-17 10:15:55,478 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-10-17 10:15:55,478 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-17 10:15:55,478 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f294e46-6498-4d98-b829-58981429824a/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 10:15:55,479 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f294e46-6498-4d98-b829-58981429824a/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-17 10:15:55,483 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f294e46-6498-4d98-b829-58981429824a/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-10-17 10:15:55,553 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-10-17 10:15:55,553 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-10-17 10:15:55,555 INFO L263 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 20 conjunts are in the unsatisfiable core [2022-10-17 10:15:55,558 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-17 10:15:55,980 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 10:15:55,980 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-17 10:15:56,535 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 10:15:56,536 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1484233945] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-17 10:15:56,536 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-17 10:15:56,536 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 15] total 33 [2022-10-17 10:15:56,536 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [761152866] [2022-10-17 10:15:56,536 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-17 10:15:56,537 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2022-10-17 10:15:56,537 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:15:56,538 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2022-10-17 10:15:56,538 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=168, Invalid=888, Unknown=0, NotChecked=0, Total=1056 [2022-10-17 10:15:56,541 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 51 out of 86 [2022-10-17 10:15:56,543 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 269 places, 428 transitions, 3374 flow. Second operand has 33 states, 33 states have (on average 52.84848484848485) internal successors, (1744), 33 states have internal predecessors, (1744), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:15:56,543 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-10-17 10:15:56,544 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 51 of 86 [2022-10-17 10:15:56,544 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-10-17 10:16:00,541 INFO L130 PetriNetUnfolder]: 490/1649 cut-off events. [2022-10-17 10:16:00,542 INFO L131 PetriNetUnfolder]: For 15402/15402 co-relation queries the response was YES. [2022-10-17 10:16:00,559 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7787 conditions, 1649 events. 490/1649 cut-off events. For 15402/15402 co-relation queries the response was YES. Maximal size of possible extension queue 110. Compared 12412 event pairs, 17 based on Foata normal form. 2/1648 useless extension candidates. Maximal degree in co-relation 7716. Up to 315 conditions per place. [2022-10-17 10:16:00,576 INFO L137 encePairwiseOnDemand]: 70/86 looper letters, 190 selfloop transitions, 394 changer transitions 32/657 dead transitions. [2022-10-17 10:16:00,576 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 334 places, 657 transitions, 7175 flow [2022-10-17 10:16:00,576 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 83 states. [2022-10-17 10:16:00,576 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 83 states. [2022-10-17 10:16:00,582 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 4564 transitions. [2022-10-17 10:16:00,584 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.6393947884561502 [2022-10-17 10:16:00,585 INFO L72 ComplementDD]: Start complementDD. Operand 83 states and 4564 transitions. [2022-10-17 10:16:00,585 INFO L73 IsDeterministic]: Start isDeterministic. Operand 83 states and 4564 transitions. [2022-10-17 10:16:00,587 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-10-17 10:16:00,587 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 83 states and 4564 transitions. [2022-10-17 10:16:00,596 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 84 states, 83 states have (on average 54.98795180722892) internal successors, (4564), 83 states have internal predecessors, (4564), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:16:00,609 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 84 states, 84 states have (on average 86.0) internal successors, (7224), 84 states have internal predecessors, (7224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:16:00,613 INFO L81 ComplementDD]: Finished complementDD. Result has 84 states, 84 states have (on average 86.0) internal successors, (7224), 84 states have internal predecessors, (7224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:16:00,614 INFO L175 Difference]: Start difference. First operand has 269 places, 428 transitions, 3374 flow. Second operand 83 states and 4564 transitions. [2022-10-17 10:16:00,614 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 334 places, 657 transitions, 7175 flow [2022-10-17 10:16:00,820 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 322 places, 657 transitions, 6691 flow, removed 242 selfloop flow, removed 12 redundant places. [2022-10-17 10:16:00,831 INFO L231 Difference]: Finished difference. Result has 338 places, 522 transitions, 4999 flow [2022-10-17 10:16:00,832 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=86, PETRI_DIFFERENCE_MINUEND_FLOW=3216, PETRI_DIFFERENCE_MINUEND_PLACES=240, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=428, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=301, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=116, PETRI_DIFFERENCE_SUBTRAHEND_STATES=83, PETRI_FLOW=4999, PETRI_PLACES=338, PETRI_TRANSITIONS=522} [2022-10-17 10:16:00,833 INFO L287 CegarLoopForPetriNet]: 76 programPoint places, 262 predicate places. [2022-10-17 10:16:00,834 INFO L495 AbstractCegarLoop]: Abstraction has has 338 places, 522 transitions, 4999 flow [2022-10-17 10:16:00,835 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 52.84848484848485) internal successors, (1744), 33 states have internal predecessors, (1744), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:16:00,835 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-10-17 10:16:00,835 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:16:00,857 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f294e46-6498-4d98-b829-58981429824a/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-10-17 10:16:01,037 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f294e46-6498-4d98-b829-58981429824a/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-17 10:16:01,037 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-10-17 10:16:01,038 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:16:01,038 INFO L85 PathProgramCache]: Analyzing trace with hash -2101775999, now seen corresponding path program 4 times [2022-10-17 10:16:01,038 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:16:01,038 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1204608085] [2022-10-17 10:16:01,038 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:16:01,038 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:16:01,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:16:01,572 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 10:16:01,572 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:16:01,572 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1204608085] [2022-10-17 10:16:01,572 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1204608085] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-17 10:16:01,572 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1383639523] [2022-10-17 10:16:01,572 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-10-17 10:16:01,572 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-17 10:16:01,573 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f294e46-6498-4d98-b829-58981429824a/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 10:16:01,577 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f294e46-6498-4d98-b829-58981429824a/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-17 10:16:01,603 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f294e46-6498-4d98-b829-58981429824a/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-10-17 10:16:01,657 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-10-17 10:16:01,658 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-10-17 10:16:01,659 INFO L263 TraceCheckSpWp]: Trace formula consists of 135 conjuncts, 20 conjunts are in the unsatisfiable core [2022-10-17 10:16:01,666 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-17 10:16:02,176 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 10:16:02,177 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-17 10:16:02,681 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 10:16:02,681 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1383639523] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-17 10:16:02,682 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-17 10:16:02,682 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 15] total 33 [2022-10-17 10:16:02,682 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1378598701] [2022-10-17 10:16:02,682 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-17 10:16:02,683 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2022-10-17 10:16:02,683 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:16:02,684 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2022-10-17 10:16:02,684 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=176, Invalid=880, Unknown=0, NotChecked=0, Total=1056 [2022-10-17 10:16:02,686 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 51 out of 86 [2022-10-17 10:16:02,689 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 338 places, 522 transitions, 4999 flow. Second operand has 33 states, 33 states have (on average 52.81818181818182) internal successors, (1743), 33 states have internal predecessors, (1743), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:16:02,689 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-10-17 10:16:02,689 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 51 of 86 [2022-10-17 10:16:02,689 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-10-17 10:16:07,062 INFO L130 PetriNetUnfolder]: 650/2184 cut-off events. [2022-10-17 10:16:07,062 INFO L131 PetriNetUnfolder]: For 24785/24785 co-relation queries the response was YES. [2022-10-17 10:16:07,078 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11475 conditions, 2184 events. 650/2184 cut-off events. For 24785/24785 co-relation queries the response was YES. Maximal size of possible extension queue 143. Compared 17617 event pairs, 24 based on Foata normal form. 3/2184 useless extension candidates. Maximal degree in co-relation 11399. Up to 427 conditions per place. [2022-10-17 10:16:07,097 INFO L137 encePairwiseOnDemand]: 71/86 looper letters, 299 selfloop transitions, 484 changer transitions 24/848 dead transitions. [2022-10-17 10:16:07,097 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 403 places, 848 transitions, 10549 flow [2022-10-17 10:16:07,097 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 78 states. [2022-10-17 10:16:07,097 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 78 states. [2022-10-17 10:16:07,104 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 4335 transitions. [2022-10-17 10:16:07,106 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.6462432915921288 [2022-10-17 10:16:07,106 INFO L72 ComplementDD]: Start complementDD. Operand 78 states and 4335 transitions. [2022-10-17 10:16:07,106 INFO L73 IsDeterministic]: Start isDeterministic. Operand 78 states and 4335 transitions. [2022-10-17 10:16:07,109 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-10-17 10:16:07,109 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 78 states and 4335 transitions. [2022-10-17 10:16:07,119 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 79 states, 78 states have (on average 55.57692307692308) internal successors, (4335), 78 states have internal predecessors, (4335), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:16:07,132 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 79 states, 79 states have (on average 86.0) internal successors, (6794), 79 states have internal predecessors, (6794), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:16:07,136 INFO L81 ComplementDD]: Finished complementDD. Result has 79 states, 79 states have (on average 86.0) internal successors, (6794), 79 states have internal predecessors, (6794), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:16:07,136 INFO L175 Difference]: Start difference. First operand has 338 places, 522 transitions, 4999 flow. Second operand 78 states and 4335 transitions. [2022-10-17 10:16:07,137 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 403 places, 848 transitions, 10549 flow [2022-10-17 10:16:07,329 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 363 places, 848 transitions, 9655 flow, removed 201 selfloop flow, removed 40 redundant places. [2022-10-17 10:16:07,349 INFO L231 Difference]: Finished difference. Result has 391 places, 664 transitions, 7404 flow [2022-10-17 10:16:07,350 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=86, PETRI_DIFFERENCE_MINUEND_FLOW=4448, PETRI_DIFFERENCE_MINUEND_PLACES=286, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=522, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=354, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=146, PETRI_DIFFERENCE_SUBTRAHEND_STATES=78, PETRI_FLOW=7404, PETRI_PLACES=391, PETRI_TRANSITIONS=664} [2022-10-17 10:16:07,351 INFO L287 CegarLoopForPetriNet]: 76 programPoint places, 315 predicate places. [2022-10-17 10:16:07,351 INFO L495 AbstractCegarLoop]: Abstraction has has 391 places, 664 transitions, 7404 flow [2022-10-17 10:16:07,361 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 52.81818181818182) internal successors, (1743), 33 states have internal predecessors, (1743), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:16:07,361 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-10-17 10:16:07,362 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:16:07,400 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f294e46-6498-4d98-b829-58981429824a/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-10-17 10:16:07,575 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f294e46-6498-4d98-b829-58981429824a/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-17 10:16:07,576 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-10-17 10:16:07,576 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:16:07,576 INFO L85 PathProgramCache]: Analyzing trace with hash -1745646075, now seen corresponding path program 5 times [2022-10-17 10:16:07,576 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:16:07,576 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [893331030] [2022-10-17 10:16:07,576 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:16:07,576 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:16:07,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:16:08,001 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 10:16:08,001 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:16:08,001 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [893331030] [2022-10-17 10:16:08,002 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [893331030] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-17 10:16:08,002 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2018472741] [2022-10-17 10:16:08,002 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-10-17 10:16:08,002 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-17 10:16:08,002 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f294e46-6498-4d98-b829-58981429824a/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 10:16:08,003 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f294e46-6498-4d98-b829-58981429824a/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-17 10:16:08,021 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f294e46-6498-4d98-b829-58981429824a/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-10-17 10:16:08,067 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-10-17 10:16:08,067 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-10-17 10:16:08,068 INFO L263 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 20 conjunts are in the unsatisfiable core [2022-10-17 10:16:08,071 INFO L286 TraceCheckSpWp]: Computing forward predicates...