./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/weaver/bench-exp3x3.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 2329fc70 Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6298f6e9-3549-4323-ac13-33df5804d876/bin/uautomizer-uyxdKDjOR8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6298f6e9-3549-4323-ac13-33df5804d876/bin/uautomizer-uyxdKDjOR8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6298f6e9-3549-4323-ac13-33df5804d876/bin/uautomizer-uyxdKDjOR8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6298f6e9-3549-4323-ac13-33df5804d876/bin/uautomizer-uyxdKDjOR8/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/bench-exp3x3.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6298f6e9-3549-4323-ac13-33df5804d876/bin/uautomizer-uyxdKDjOR8/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6298f6e9-3549-4323-ac13-33df5804d876/bin/uautomizer-uyxdKDjOR8 --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 753355d7d8c08568df49ed9a7977f84d185e0dbf04984bcb7908b11aa84a04b9 --- 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-2329fc7 [2022-12-13 22:29:48,256 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-13 22:29:48,257 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-13 22:29:48,276 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-13 22:29:48,277 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-13 22:29:48,277 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-13 22:29:48,279 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-13 22:29:48,280 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-13 22:29:48,282 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-13 22:29:48,282 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-13 22:29:48,283 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-13 22:29:48,284 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-13 22:29:48,285 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-13 22:29:48,285 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-13 22:29:48,287 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-13 22:29:48,288 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-13 22:29:48,288 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-13 22:29:48,289 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-13 22:29:48,291 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-13 22:29:48,292 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-13 22:29:48,293 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-13 22:29:48,294 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-13 22:29:48,295 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-13 22:29:48,295 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-13 22:29:48,297 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-13 22:29:48,298 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-13 22:29:48,298 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-13 22:29:48,298 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-13 22:29:48,299 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-13 22:29:48,299 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-13 22:29:48,299 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-13 22:29:48,300 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-13 22:29:48,301 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-13 22:29:48,301 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-13 22:29:48,302 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-13 22:29:48,302 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-13 22:29:48,302 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-13 22:29:48,302 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-13 22:29:48,303 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-13 22:29:48,303 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-13 22:29:48,303 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-13 22:29:48,304 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6298f6e9-3549-4323-ac13-33df5804d876/bin/uautomizer-uyxdKDjOR8/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-12-13 22:29:48,318 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-13 22:29:48,318 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-13 22:29:48,318 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-13 22:29:48,318 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-13 22:29:48,319 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-13 22:29:48,319 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-13 22:29:48,324 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-12-13 22:29:48,324 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-12-13 22:29:48,324 INFO L138 SettingsManager]: * Use SBE=true [2022-12-13 22:29:48,324 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-13 22:29:48,325 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-13 22:29:48,325 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-13 22:29:48,325 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-13 22:29:48,325 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-13 22:29:48,325 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-13 22:29:48,325 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-13 22:29:48,325 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-13 22:29:48,325 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-13 22:29:48,325 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-13 22:29:48,326 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-13 22:29:48,326 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-13 22:29:48,326 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-13 22:29:48,326 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-13 22:29:48,326 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-13 22:29:48,326 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 22:29:48,326 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-13 22:29:48,326 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-13 22:29:48,327 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-13 22:29:48,327 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-12-13 22:29:48,327 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-13 22:29:48,327 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-12-13 22:29:48,327 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-12-13 22:29:48,327 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2022-12-13 22:29:48,327 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-12-13 22:29:48,327 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2022-12-13 22:29:48,327 INFO L138 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC 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_6298f6e9-3549-4323-ac13-33df5804d876/bin/uautomizer-uyxdKDjOR8/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6298f6e9-3549-4323-ac13-33df5804d876/bin/uautomizer-uyxdKDjOR8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 753355d7d8c08568df49ed9a7977f84d185e0dbf04984bcb7908b11aa84a04b9 [2022-12-13 22:29:48,489 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-13 22:29:48,507 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-13 22:29:48,510 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-13 22:29:48,510 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-13 22:29:48,511 INFO L275 PluginConnector]: CDTParser initialized [2022-12-13 22:29:48,512 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6298f6e9-3549-4323-ac13-33df5804d876/bin/uautomizer-uyxdKDjOR8/../../sv-benchmarks/c/weaver/bench-exp3x3.wvr.c [2022-12-13 22:29:51,026 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-13 22:29:51,195 INFO L351 CDTParser]: Found 1 translation units. [2022-12-13 22:29:51,195 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6298f6e9-3549-4323-ac13-33df5804d876/sv-benchmarks/c/weaver/bench-exp3x3.wvr.c [2022-12-13 22:29:51,200 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6298f6e9-3549-4323-ac13-33df5804d876/bin/uautomizer-uyxdKDjOR8/data/337e863a5/37458cef968d4f0c90e26185af6a9260/FLAG185c03cd8 [2022-12-13 22:29:51,587 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6298f6e9-3549-4323-ac13-33df5804d876/bin/uautomizer-uyxdKDjOR8/data/337e863a5/37458cef968d4f0c90e26185af6a9260 [2022-12-13 22:29:51,589 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-13 22:29:51,589 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-13 22:29:51,590 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-13 22:29:51,590 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-13 22:29:51,593 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-13 22:29:51,593 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 10:29:51" (1/1) ... [2022-12-13 22:29:51,594 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1939c5e0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 10:29:51, skipping insertion in model container [2022-12-13 22:29:51,594 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 10:29:51" (1/1) ... [2022-12-13 22:29:51,599 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-13 22:29:51,613 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-13 22:29:51,739 WARN L237 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_6298f6e9-3549-4323-ac13-33df5804d876/sv-benchmarks/c/weaver/bench-exp3x3.wvr.c[2625,2638] [2022-12-13 22:29:51,743 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 22:29:51,750 INFO L203 MainTranslator]: Completed pre-run [2022-12-13 22:29:51,766 WARN L237 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_6298f6e9-3549-4323-ac13-33df5804d876/sv-benchmarks/c/weaver/bench-exp3x3.wvr.c[2625,2638] [2022-12-13 22:29:51,767 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 22:29:51,776 INFO L208 MainTranslator]: Completed translation [2022-12-13 22:29:51,777 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 10:29:51 WrapperNode [2022-12-13 22:29:51,777 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-13 22:29:51,778 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-13 22:29:51,778 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-13 22:29:51,778 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-13 22:29:51,782 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 10:29:51" (1/1) ... [2022-12-13 22:29:51,788 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 10:29:51" (1/1) ... [2022-12-13 22:29:51,802 INFO L138 Inliner]: procedures = 22, calls = 44, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 125 [2022-12-13 22:29:51,802 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-13 22:29:51,803 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-13 22:29:51,803 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-13 22:29:51,803 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-13 22:29:51,809 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 10:29:51" (1/1) ... [2022-12-13 22:29:51,809 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 10:29:51" (1/1) ... [2022-12-13 22:29:51,811 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 10:29:51" (1/1) ... [2022-12-13 22:29:51,811 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 10:29:51" (1/1) ... [2022-12-13 22:29:51,815 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 10:29:51" (1/1) ... [2022-12-13 22:29:51,817 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 10:29:51" (1/1) ... [2022-12-13 22:29:51,818 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 10:29:51" (1/1) ... [2022-12-13 22:29:51,819 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 10:29:51" (1/1) ... [2022-12-13 22:29:51,821 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-13 22:29:51,822 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-13 22:29:51,822 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-13 22:29:51,822 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-13 22:29:51,822 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 10:29:51" (1/1) ... [2022-12-13 22:29:51,827 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 22:29:51,834 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6298f6e9-3549-4323-ac13-33df5804d876/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 22:29:51,844 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6298f6e9-3549-4323-ac13-33df5804d876/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-13 22:29:51,846 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6298f6e9-3549-4323-ac13-33df5804d876/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-13 22:29:51,876 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-13 22:29:51,876 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-12-13 22:29:51,876 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-12-13 22:29:51,876 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-12-13 22:29:51,876 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-12-13 22:29:51,876 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2022-12-13 22:29:51,876 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2022-12-13 22:29:51,876 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2022-12-13 22:29:51,877 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2022-12-13 22:29:51,877 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-13 22:29:51,877 INFO L130 BoogieDeclarations]: Found specification of procedure thread5 [2022-12-13 22:29:51,877 INFO L138 BoogieDeclarations]: Found implementation of procedure thread5 [2022-12-13 22:29:51,877 INFO L130 BoogieDeclarations]: Found specification of procedure thread6 [2022-12-13 22:29:51,877 INFO L138 BoogieDeclarations]: Found implementation of procedure thread6 [2022-12-13 22:29:51,877 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-12-13 22:29:51,877 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-12-13 22:29:51,878 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-13 22:29:51,878 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-13 22:29:51,878 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-12-13 22:29:51,878 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-12-13 22:29:51,879 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-12-13 22:29:51,957 INFO L235 CfgBuilder]: Building ICFG [2022-12-13 22:29:51,958 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-13 22:29:52,149 INFO L276 CfgBuilder]: Performing block encoding [2022-12-13 22:29:52,155 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-13 22:29:52,155 INFO L300 CfgBuilder]: Removed 6 assume(true) statements. [2022-12-13 22:29:52,156 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 10:29:52 BoogieIcfgContainer [2022-12-13 22:29:52,157 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-13 22:29:52,158 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-13 22:29:52,158 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-13 22:29:52,160 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-13 22:29:52,160 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.12 10:29:51" (1/3) ... [2022-12-13 22:29:52,161 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7ea0f2b8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 10:29:52, skipping insertion in model container [2022-12-13 22:29:52,161 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 10:29:51" (2/3) ... [2022-12-13 22:29:52,161 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7ea0f2b8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 10:29:52, skipping insertion in model container [2022-12-13 22:29:52,161 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 10:29:52" (3/3) ... [2022-12-13 22:29:52,162 INFO L112 eAbstractionObserver]: Analyzing ICFG bench-exp3x3.wvr.c [2022-12-13 22:29:52,168 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-12-13 22:29:52,176 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-13 22:29:52,176 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-12-13 22:29:52,176 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-12-13 22:29:52,246 INFO L144 ThreadInstanceAdder]: Constructed 6 joinOtherThreadTransitions. [2022-12-13 22:29:52,274 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 174 places, 169 transitions, 386 flow [2022-12-13 22:29:52,330 INFO L130 PetriNetUnfolder]: 14/163 cut-off events. [2022-12-13 22:29:52,331 INFO L131 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2022-12-13 22:29:52,335 INFO L83 FinitePrefix]: Finished finitePrefix Result has 188 conditions, 163 events. 14/163 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 64 event pairs, 0 based on Foata normal form. 0/148 useless extension candidates. Maximal degree in co-relation 120. Up to 2 conditions per place. [2022-12-13 22:29:52,335 INFO L82 GeneralOperation]: Start removeDead. Operand has 174 places, 169 transitions, 386 flow [2022-12-13 22:29:52,339 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 151 places, 146 transitions, 328 flow [2022-12-13 22:29:52,342 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2022-12-13 22:29:52,349 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 151 places, 146 transitions, 328 flow [2022-12-13 22:29:52,351 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 151 places, 146 transitions, 328 flow [2022-12-13 22:29:52,352 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 151 places, 146 transitions, 328 flow [2022-12-13 22:29:52,396 INFO L130 PetriNetUnfolder]: 14/146 cut-off events. [2022-12-13 22:29:52,397 INFO L131 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2022-12-13 22:29:52,398 INFO L83 FinitePrefix]: Finished finitePrefix Result has 171 conditions, 146 events. 14/146 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 62 event pairs, 0 based on Foata normal form. 0/132 useless extension candidates. Maximal degree in co-relation 120. Up to 2 conditions per place. [2022-12-13 22:29:52,399 INFO L119 LiptonReduction]: Number of co-enabled transitions 2916 [2022-12-13 22:29:57,619 INFO L134 LiptonReduction]: Checked pairs total: 3520 [2022-12-13 22:29:57,619 INFO L136 LiptonReduction]: Total number of compositions: 122 [2022-12-13 22:29:57,629 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-13 22:29:57,634 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;@3f8230ec, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2022-12-13 22:29:57,634 INFO L358 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2022-12-13 22:29:57,640 INFO L130 PetriNetUnfolder]: 6/36 cut-off events. [2022-12-13 22:29:57,640 INFO L131 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2022-12-13 22:29:57,640 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 22:29:57,640 INFO L209 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] [2022-12-13 22:29:57,641 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-12-13 22:29:57,644 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 22:29:57,644 INFO L85 PathProgramCache]: Analyzing trace with hash -1442041737, now seen corresponding path program 1 times [2022-12-13 22:29:57,650 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 22:29:57,650 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2010893607] [2022-12-13 22:29:57,651 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 22:29:57,651 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 22:29:57,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:29:58,212 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 22:29:58,212 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 22:29:58,212 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2010893607] [2022-12-13 22:29:58,213 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2010893607] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 22:29:58,213 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 22:29:58,213 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-12-13 22:29:58,214 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [207992404] [2022-12-13 22:29:58,214 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 22:29:58,221 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 22:29:58,221 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 22:29:58,236 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 22:29:58,237 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 22:29:58,348 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 130 out of 291 [2022-12-13 22:29:58,351 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 37 transitions, 110 flow. Second operand has 3 states, 3 states have (on average 140.33333333333334) internal successors, (421), 3 states have internal predecessors, (421), 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) [2022-12-13 22:29:58,351 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 22:29:58,351 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 130 of 291 [2022-12-13 22:29:58,352 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 22:29:58,741 INFO L130 PetriNetUnfolder]: 3473/4229 cut-off events. [2022-12-13 22:29:58,741 INFO L131 PetriNetUnfolder]: For 250/250 co-relation queries the response was YES. [2022-12-13 22:29:58,748 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8842 conditions, 4229 events. 3473/4229 cut-off events. For 250/250 co-relation queries the response was YES. Maximal size of possible extension queue 92. Compared 11650 event pairs, 837 based on Foata normal form. 1/2430 useless extension candidates. Maximal degree in co-relation 6136. Up to 3015 conditions per place. [2022-12-13 22:29:58,766 INFO L137 encePairwiseOnDemand]: 283/291 looper letters, 63 selfloop transitions, 7 changer transitions 1/71 dead transitions. [2022-12-13 22:29:58,767 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 71 transitions, 353 flow [2022-12-13 22:29:58,768 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 22:29:58,770 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 22:29:58,779 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 462 transitions. [2022-12-13 22:29:58,781 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5292096219931272 [2022-12-13 22:29:58,782 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 462 transitions. [2022-12-13 22:29:58,783 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 462 transitions. [2022-12-13 22:29:58,784 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 22:29:58,787 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 462 transitions. [2022-12-13 22:29:58,790 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 154.0) internal successors, (462), 3 states have internal predecessors, (462), 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) [2022-12-13 22:29:58,796 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 291.0) internal successors, (1164), 4 states have internal predecessors, (1164), 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) [2022-12-13 22:29:58,797 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 291.0) internal successors, (1164), 4 states have internal predecessors, (1164), 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) [2022-12-13 22:29:58,799 INFO L175 Difference]: Start difference. First operand has 50 places, 37 transitions, 110 flow. Second operand 3 states and 462 transitions. [2022-12-13 22:29:58,800 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 71 transitions, 353 flow [2022-12-13 22:29:58,808 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 71 transitions, 307 flow, removed 0 selfloop flow, removed 12 redundant places. [2022-12-13 22:29:58,810 INFO L231 Difference]: Finished difference. Result has 41 places, 43 transitions, 133 flow [2022-12-13 22:29:58,812 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=291, PETRI_DIFFERENCE_MINUEND_FLOW=86, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=133, PETRI_PLACES=41, PETRI_TRANSITIONS=43} [2022-12-13 22:29:58,815 INFO L288 CegarLoopForPetriNet]: 50 programPoint places, -9 predicate places. [2022-12-13 22:29:58,815 INFO L495 AbstractCegarLoop]: Abstraction has has 41 places, 43 transitions, 133 flow [2022-12-13 22:29:58,816 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 140.33333333333334) internal successors, (421), 3 states have internal predecessors, (421), 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) [2022-12-13 22:29:58,816 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 22:29:58,816 INFO L209 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] [2022-12-13 22:29:58,817 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-13 22:29:58,817 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-12-13 22:29:58,817 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 22:29:58,818 INFO L85 PathProgramCache]: Analyzing trace with hash -197792697, now seen corresponding path program 1 times [2022-12-13 22:29:58,818 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 22:29:58,818 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1778066130] [2022-12-13 22:29:58,818 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 22:29:58,818 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 22:29:58,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:29:59,074 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 22:29:59,074 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 22:29:59,074 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1778066130] [2022-12-13 22:29:59,074 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1778066130] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 22:29:59,075 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 22:29:59,075 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 22:29:59,075 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [895586234] [2022-12-13 22:29:59,075 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 22:29:59,076 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 22:29:59,076 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 22:29:59,076 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 22:29:59,076 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-12-13 22:29:59,269 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 124 out of 291 [2022-12-13 22:29:59,270 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 43 transitions, 133 flow. Second operand has 4 states, 4 states have (on average 132.0) internal successors, (528), 4 states have internal predecessors, (528), 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) [2022-12-13 22:29:59,270 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 22:29:59,270 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 124 of 291 [2022-12-13 22:29:59,270 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 22:29:59,741 INFO L130 PetriNetUnfolder]: 3317/4073 cut-off events. [2022-12-13 22:29:59,742 INFO L131 PetriNetUnfolder]: For 1133/1133 co-relation queries the response was YES. [2022-12-13 22:29:59,744 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10665 conditions, 4073 events. 3317/4073 cut-off events. For 1133/1133 co-relation queries the response was YES. Maximal size of possible extension queue 95. Compared 12041 event pairs, 117 based on Foata normal form. 156/4229 useless extension candidates. Maximal degree in co-relation 4098. Up to 2859 conditions per place. [2022-12-13 22:29:59,755 INFO L137 encePairwiseOnDemand]: 282/291 looper letters, 78 selfloop transitions, 13 changer transitions 1/92 dead transitions. [2022-12-13 22:29:59,755 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 92 transitions, 443 flow [2022-12-13 22:29:59,755 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-13 22:29:59,756 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-12-13 22:29:59,757 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 590 transitions. [2022-12-13 22:29:59,757 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.506872852233677 [2022-12-13 22:29:59,758 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 590 transitions. [2022-12-13 22:29:59,758 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 590 transitions. [2022-12-13 22:29:59,758 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 22:29:59,758 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 590 transitions. [2022-12-13 22:29:59,759 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 147.5) internal successors, (590), 4 states have internal predecessors, (590), 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) [2022-12-13 22:29:59,761 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 291.0) internal successors, (1455), 5 states have internal predecessors, (1455), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 22:29:59,761 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 291.0) internal successors, (1455), 5 states have internal predecessors, (1455), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 22:29:59,762 INFO L175 Difference]: Start difference. First operand has 41 places, 43 transitions, 133 flow. Second operand 4 states and 590 transitions. [2022-12-13 22:29:59,762 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 92 transitions, 443 flow [2022-12-13 22:29:59,763 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 92 transitions, 432 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-12-13 22:29:59,764 INFO L231 Difference]: Finished difference. Result has 44 places, 49 transitions, 185 flow [2022-12-13 22:29:59,764 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=291, PETRI_DIFFERENCE_MINUEND_FLOW=126, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=185, PETRI_PLACES=44, PETRI_TRANSITIONS=49} [2022-12-13 22:29:59,765 INFO L288 CegarLoopForPetriNet]: 50 programPoint places, -6 predicate places. [2022-12-13 22:29:59,765 INFO L495 AbstractCegarLoop]: Abstraction has has 44 places, 49 transitions, 185 flow [2022-12-13 22:29:59,765 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 132.0) internal successors, (528), 4 states have internal predecessors, (528), 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) [2022-12-13 22:29:59,765 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 22:29:59,765 INFO L209 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] [2022-12-13 22:29:59,766 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-12-13 22:29:59,766 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-12-13 22:29:59,766 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 22:29:59,766 INFO L85 PathProgramCache]: Analyzing trace with hash 685982906, now seen corresponding path program 1 times [2022-12-13 22:29:59,766 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 22:29:59,766 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1521367841] [2022-12-13 22:29:59,767 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 22:29:59,767 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 22:29:59,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:30:00,027 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 22:30:00,027 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 22:30:00,027 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1521367841] [2022-12-13 22:30:00,027 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1521367841] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 22:30:00,027 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 22:30:00,028 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 22:30:00,028 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [483924932] [2022-12-13 22:30:00,028 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 22:30:00,028 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 22:30:00,028 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 22:30:00,028 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 22:30:00,029 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-12-13 22:30:00,131 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 124 out of 291 [2022-12-13 22:30:00,132 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 49 transitions, 185 flow. Second operand has 4 states, 4 states have (on average 132.0) internal successors, (528), 4 states have internal predecessors, (528), 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) [2022-12-13 22:30:00,132 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 22:30:00,132 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 124 of 291 [2022-12-13 22:30:00,132 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 22:30:00,553 INFO L130 PetriNetUnfolder]: 3191/3947 cut-off events. [2022-12-13 22:30:00,553 INFO L131 PetriNetUnfolder]: For 3282/3282 co-relation queries the response was YES. [2022-12-13 22:30:00,557 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11061 conditions, 3947 events. 3191/3947 cut-off events. For 3282/3282 co-relation queries the response was YES. Maximal size of possible extension queue 95. Compared 11465 event pairs, 315 based on Foata normal form. 126/4073 useless extension candidates. Maximal degree in co-relation 3194. Up to 2733 conditions per place. [2022-12-13 22:30:00,568 INFO L137 encePairwiseOnDemand]: 282/291 looper letters, 78 selfloop transitions, 19 changer transitions 5/102 dead transitions. [2022-12-13 22:30:00,569 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 102 transitions, 553 flow [2022-12-13 22:30:00,569 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-13 22:30:00,569 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-12-13 22:30:00,570 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 590 transitions. [2022-12-13 22:30:00,570 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.506872852233677 [2022-12-13 22:30:00,570 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 590 transitions. [2022-12-13 22:30:00,571 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 590 transitions. [2022-12-13 22:30:00,571 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 22:30:00,571 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 590 transitions. [2022-12-13 22:30:00,572 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 147.5) internal successors, (590), 4 states have internal predecessors, (590), 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) [2022-12-13 22:30:00,573 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 291.0) internal successors, (1455), 5 states have internal predecessors, (1455), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 22:30:00,574 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 291.0) internal successors, (1455), 5 states have internal predecessors, (1455), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 22:30:00,574 INFO L175 Difference]: Start difference. First operand has 44 places, 49 transitions, 185 flow. Second operand 4 states and 590 transitions. [2022-12-13 22:30:00,574 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 102 transitions, 553 flow [2022-12-13 22:30:00,576 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 102 transitions, 519 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-12-13 22:30:00,577 INFO L231 Difference]: Finished difference. Result has 46 places, 57 transitions, 250 flow [2022-12-13 22:30:00,577 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=291, PETRI_DIFFERENCE_MINUEND_FLOW=163, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=250, PETRI_PLACES=46, PETRI_TRANSITIONS=57} [2022-12-13 22:30:00,578 INFO L288 CegarLoopForPetriNet]: 50 programPoint places, -4 predicate places. [2022-12-13 22:30:00,578 INFO L495 AbstractCegarLoop]: Abstraction has has 46 places, 57 transitions, 250 flow [2022-12-13 22:30:00,578 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 132.0) internal successors, (528), 4 states have internal predecessors, (528), 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) [2022-12-13 22:30:00,578 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 22:30:00,579 INFO L209 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] [2022-12-13 22:30:00,579 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-12-13 22:30:00,579 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-12-13 22:30:00,579 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 22:30:00,579 INFO L85 PathProgramCache]: Analyzing trace with hash 2061829680, now seen corresponding path program 1 times [2022-12-13 22:30:00,579 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 22:30:00,579 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [561003472] [2022-12-13 22:30:00,579 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 22:30:00,579 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 22:30:00,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:30:00,772 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 22:30:00,772 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 22:30:00,772 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [561003472] [2022-12-13 22:30:00,772 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [561003472] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 22:30:00,772 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1892215756] [2022-12-13 22:30:00,773 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 22:30:00,773 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 22:30:00,773 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6298f6e9-3549-4323-ac13-33df5804d876/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 22:30:00,774 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6298f6e9-3549-4323-ac13-33df5804d876/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 22:30:00,775 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6298f6e9-3549-4323-ac13-33df5804d876/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-12-13 22:30:00,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:30:00,874 INFO L263 TraceCheckSpWp]: Trace formula consists of 318 conjuncts, 7 conjunts are in the unsatisfiable core [2022-12-13 22:30:00,879 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 22:30:01,137 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 22:30:01,137 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 22:30:01,224 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 22:30:01,225 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1892215756] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 22:30:01,225 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 22:30:01,225 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2022-12-13 22:30:01,225 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [675620291] [2022-12-13 22:30:01,225 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 22:30:01,226 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-13 22:30:01,226 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 22:30:01,226 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-13 22:30:01,226 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2022-12-13 22:30:01,384 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 124 out of 291 [2022-12-13 22:30:01,385 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 57 transitions, 250 flow. Second operand has 7 states, 7 states have (on average 136.28571428571428) internal successors, (954), 7 states have internal predecessors, (954), 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) [2022-12-13 22:30:01,385 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 22:30:01,386 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 124 of 291 [2022-12-13 22:30:01,386 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 22:30:02,193 INFO L130 PetriNetUnfolder]: 5825/7153 cut-off events. [2022-12-13 22:30:02,194 INFO L131 PetriNetUnfolder]: For 4294/4294 co-relation queries the response was YES. [2022-12-13 22:30:02,202 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20810 conditions, 7153 events. 5825/7153 cut-off events. For 4294/4294 co-relation queries the response was YES. Maximal size of possible extension queue 180. Compared 22486 event pairs, 921 based on Foata normal form. 126/7279 useless extension candidates. Maximal degree in co-relation 6562. Up to 2966 conditions per place. [2022-12-13 22:30:02,228 INFO L137 encePairwiseOnDemand]: 282/291 looper letters, 131 selfloop transitions, 22 changer transitions 3/156 dead transitions. [2022-12-13 22:30:02,228 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 156 transitions, 853 flow [2022-12-13 22:30:02,229 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-13 22:30:02,229 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-12-13 22:30:02,231 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 888 transitions. [2022-12-13 22:30:02,232 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5085910652920962 [2022-12-13 22:30:02,232 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 888 transitions. [2022-12-13 22:30:02,232 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 888 transitions. [2022-12-13 22:30:02,233 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 22:30:02,233 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 888 transitions. [2022-12-13 22:30:02,235 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 148.0) internal successors, (888), 6 states have internal predecessors, (888), 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) [2022-12-13 22:30:02,238 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 291.0) internal successors, (2037), 7 states have internal predecessors, (2037), 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) [2022-12-13 22:30:02,239 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 291.0) internal successors, (2037), 7 states have internal predecessors, (2037), 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) [2022-12-13 22:30:02,239 INFO L175 Difference]: Start difference. First operand has 46 places, 57 transitions, 250 flow. Second operand 6 states and 888 transitions. [2022-12-13 22:30:02,239 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 156 transitions, 853 flow [2022-12-13 22:30:02,242 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 156 transitions, 836 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-12-13 22:30:02,244 INFO L231 Difference]: Finished difference. Result has 53 places, 62 transitions, 328 flow [2022-12-13 22:30:02,244 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=291, PETRI_DIFFERENCE_MINUEND_FLOW=233, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=328, PETRI_PLACES=53, PETRI_TRANSITIONS=62} [2022-12-13 22:30:02,244 INFO L288 CegarLoopForPetriNet]: 50 programPoint places, 3 predicate places. [2022-12-13 22:30:02,245 INFO L495 AbstractCegarLoop]: Abstraction has has 53 places, 62 transitions, 328 flow [2022-12-13 22:30:02,245 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 136.28571428571428) internal successors, (954), 7 states have internal predecessors, (954), 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) [2022-12-13 22:30:02,245 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 22:30:02,246 INFO L209 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] [2022-12-13 22:30:02,251 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6298f6e9-3549-4323-ac13-33df5804d876/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-12-13 22:30:02,446 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6298f6e9-3549-4323-ac13-33df5804d876/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 22:30:02,447 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-12-13 22:30:02,448 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 22:30:02,449 INFO L85 PathProgramCache]: Analyzing trace with hash 1803964654, now seen corresponding path program 2 times [2022-12-13 22:30:02,449 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 22:30:02,450 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1933941860] [2022-12-13 22:30:02,450 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 22:30:02,450 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 22:30:02,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:30:02,739 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 22:30:02,740 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 22:30:02,740 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1933941860] [2022-12-13 22:30:02,740 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1933941860] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 22:30:02,740 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1567828998] [2022-12-13 22:30:02,740 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-13 22:30:02,740 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 22:30:02,741 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6298f6e9-3549-4323-ac13-33df5804d876/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 22:30:02,741 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6298f6e9-3549-4323-ac13-33df5804d876/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 22:30:02,742 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6298f6e9-3549-4323-ac13-33df5804d876/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-12-13 22:30:02,893 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-12-13 22:30:02,893 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 22:30:02,894 INFO L263 TraceCheckSpWp]: Trace formula consists of 318 conjuncts, 7 conjunts are in the unsatisfiable core [2022-12-13 22:30:02,897 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 22:30:03,066 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 22:30:03,066 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 22:30:03,151 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 22:30:03,152 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1567828998] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 22:30:03,152 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 22:30:03,152 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 5 [2022-12-13 22:30:03,152 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1909305107] [2022-12-13 22:30:03,152 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 22:30:03,153 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-13 22:30:03,153 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 22:30:03,153 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-13 22:30:03,153 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-12-13 22:30:03,227 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 136 out of 291 [2022-12-13 22:30:03,228 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 62 transitions, 328 flow. Second operand has 6 states, 6 states have (on average 146.0) internal successors, (876), 6 states have internal predecessors, (876), 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) [2022-12-13 22:30:03,228 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 22:30:03,228 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 136 of 291 [2022-12-13 22:30:03,228 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 22:30:03,839 INFO L130 PetriNetUnfolder]: 6921/8503 cut-off events. [2022-12-13 22:30:03,839 INFO L131 PetriNetUnfolder]: For 11947/11947 co-relation queries the response was YES. [2022-12-13 22:30:03,846 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27453 conditions, 8503 events. 6921/8503 cut-off events. For 11947/11947 co-relation queries the response was YES. Maximal size of possible extension queue 212. Compared 27040 event pairs, 1503 based on Foata normal form. 124/8627 useless extension candidates. Maximal degree in co-relation 14962. Up to 3609 conditions per place. [2022-12-13 22:30:03,864 INFO L137 encePairwiseOnDemand]: 286/291 looper letters, 121 selfloop transitions, 10 changer transitions 0/131 dead transitions. [2022-12-13 22:30:03,864 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 131 transitions, 814 flow [2022-12-13 22:30:03,865 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-13 22:30:03,865 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-12-13 22:30:03,866 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 790 transitions. [2022-12-13 22:30:03,866 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5429553264604811 [2022-12-13 22:30:03,866 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 790 transitions. [2022-12-13 22:30:03,866 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 790 transitions. [2022-12-13 22:30:03,867 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 22:30:03,867 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 790 transitions. [2022-12-13 22:30:03,868 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 158.0) internal successors, (790), 5 states have internal predecessors, (790), 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) [2022-12-13 22:30:03,869 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 291.0) internal successors, (1746), 6 states have internal predecessors, (1746), 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) [2022-12-13 22:30:03,869 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 291.0) internal successors, (1746), 6 states have internal predecessors, (1746), 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) [2022-12-13 22:30:03,869 INFO L175 Difference]: Start difference. First operand has 53 places, 62 transitions, 328 flow. Second operand 5 states and 790 transitions. [2022-12-13 22:30:03,869 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 131 transitions, 814 flow [2022-12-13 22:30:03,890 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 131 transitions, 795 flow, removed 1 selfloop flow, removed 1 redundant places. [2022-12-13 22:30:03,891 INFO L231 Difference]: Finished difference. Result has 58 places, 65 transitions, 364 flow [2022-12-13 22:30:03,891 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=291, PETRI_DIFFERENCE_MINUEND_FLOW=309, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=62, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=364, PETRI_PLACES=58, PETRI_TRANSITIONS=65} [2022-12-13 22:30:03,892 INFO L288 CegarLoopForPetriNet]: 50 programPoint places, 8 predicate places. [2022-12-13 22:30:03,892 INFO L495 AbstractCegarLoop]: Abstraction has has 58 places, 65 transitions, 364 flow [2022-12-13 22:30:03,892 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 146.0) internal successors, (876), 6 states have internal predecessors, (876), 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) [2022-12-13 22:30:03,892 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 22:30:03,892 INFO L209 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] [2022-12-13 22:30:03,898 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6298f6e9-3549-4323-ac13-33df5804d876/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-12-13 22:30:04,093 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6298f6e9-3549-4323-ac13-33df5804d876/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 22:30:04,094 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-12-13 22:30:04,095 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 22:30:04,095 INFO L85 PathProgramCache]: Analyzing trace with hash 2130881278, now seen corresponding path program 1 times [2022-12-13 22:30:04,096 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 22:30:04,096 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1349554798] [2022-12-13 22:30:04,096 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 22:30:04,097 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 22:30:04,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:30:04,315 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 22:30:04,315 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 22:30:04,316 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1349554798] [2022-12-13 22:30:04,316 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1349554798] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 22:30:04,316 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [555538507] [2022-12-13 22:30:04,316 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 22:30:04,316 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 22:30:04,316 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6298f6e9-3549-4323-ac13-33df5804d876/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 22:30:04,317 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6298f6e9-3549-4323-ac13-33df5804d876/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 22:30:04,318 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6298f6e9-3549-4323-ac13-33df5804d876/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-12-13 22:30:04,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:30:04,418 INFO L263 TraceCheckSpWp]: Trace formula consists of 318 conjuncts, 7 conjunts are in the unsatisfiable core [2022-12-13 22:30:04,420 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 22:30:04,503 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 22:30:04,503 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 22:30:04,549 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 22:30:04,549 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [555538507] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 22:30:04,550 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 22:30:04,550 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 5 [2022-12-13 22:30:04,550 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1929602490] [2022-12-13 22:30:04,550 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 22:30:04,550 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-13 22:30:04,551 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 22:30:04,551 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-13 22:30:04,551 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-12-13 22:30:04,608 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 136 out of 291 [2022-12-13 22:30:04,609 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 65 transitions, 364 flow. Second operand has 6 states, 6 states have (on average 143.66666666666666) internal successors, (862), 6 states have internal predecessors, (862), 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) [2022-12-13 22:30:04,609 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 22:30:04,609 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 136 of 291 [2022-12-13 22:30:04,609 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 22:30:05,907 INFO L130 PetriNetUnfolder]: 17205/21155 cut-off events. [2022-12-13 22:30:05,908 INFO L131 PetriNetUnfolder]: For 38852/38852 co-relation queries the response was YES. [2022-12-13 22:30:05,928 INFO L83 FinitePrefix]: Finished finitePrefix Result has 73246 conditions, 21155 events. 17205/21155 cut-off events. For 38852/38852 co-relation queries the response was YES. Maximal size of possible extension queue 549. Compared 79294 event pairs, 4045 based on Foata normal form. 560/21715 useless extension candidates. Maximal degree in co-relation 45045. Up to 9545 conditions per place. [2022-12-13 22:30:05,978 INFO L137 encePairwiseOnDemand]: 286/291 looper letters, 154 selfloop transitions, 14 changer transitions 0/168 dead transitions. [2022-12-13 22:30:05,978 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 168 transitions, 1206 flow [2022-12-13 22:30:05,979 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-13 22:30:05,979 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-12-13 22:30:05,980 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 798 transitions. [2022-12-13 22:30:05,980 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5484536082474227 [2022-12-13 22:30:05,980 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 798 transitions. [2022-12-13 22:30:05,980 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 798 transitions. [2022-12-13 22:30:05,980 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 22:30:05,981 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 798 transitions. [2022-12-13 22:30:05,981 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 159.6) internal successors, (798), 5 states have internal predecessors, (798), 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) [2022-12-13 22:30:05,983 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 291.0) internal successors, (1746), 6 states have internal predecessors, (1746), 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) [2022-12-13 22:30:05,983 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 291.0) internal successors, (1746), 6 states have internal predecessors, (1746), 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) [2022-12-13 22:30:05,983 INFO L175 Difference]: Start difference. First operand has 58 places, 65 transitions, 364 flow. Second operand 5 states and 798 transitions. [2022-12-13 22:30:05,983 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 168 transitions, 1206 flow [2022-12-13 22:30:06,222 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 168 transitions, 1125 flow, removed 24 selfloop flow, removed 2 redundant places. [2022-12-13 22:30:06,225 INFO L231 Difference]: Finished difference. Result has 63 places, 70 transitions, 407 flow [2022-12-13 22:30:06,225 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=291, PETRI_DIFFERENCE_MINUEND_FLOW=331, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=65, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=407, PETRI_PLACES=63, PETRI_TRANSITIONS=70} [2022-12-13 22:30:06,225 INFO L288 CegarLoopForPetriNet]: 50 programPoint places, 13 predicate places. [2022-12-13 22:30:06,226 INFO L495 AbstractCegarLoop]: Abstraction has has 63 places, 70 transitions, 407 flow [2022-12-13 22:30:06,226 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 143.66666666666666) internal successors, (862), 6 states have internal predecessors, (862), 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) [2022-12-13 22:30:06,226 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 22:30:06,226 INFO L209 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] [2022-12-13 22:30:06,231 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6298f6e9-3549-4323-ac13-33df5804d876/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2022-12-13 22:30:06,427 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6298f6e9-3549-4323-ac13-33df5804d876/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 22:30:06,428 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-12-13 22:30:06,428 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 22:30:06,429 INFO L85 PathProgramCache]: Analyzing trace with hash 2082273267, now seen corresponding path program 1 times [2022-12-13 22:30:06,429 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 22:30:06,429 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1503669832] [2022-12-13 22:30:06,429 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 22:30:06,430 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 22:30:06,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:30:06,625 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 22:30:06,626 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 22:30:06,626 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1503669832] [2022-12-13 22:30:06,626 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1503669832] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 22:30:06,626 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 22:30:06,626 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 22:30:06,626 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [927611526] [2022-12-13 22:30:06,626 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 22:30:06,626 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 22:30:06,627 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 22:30:06,627 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 22:30:06,627 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-13 22:30:06,688 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 136 out of 291 [2022-12-13 22:30:06,689 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 70 transitions, 407 flow. Second operand has 4 states, 4 states have (on average 144.0) internal successors, (576), 4 states have internal predecessors, (576), 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) [2022-12-13 22:30:06,689 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 22:30:06,689 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 136 of 291 [2022-12-13 22:30:06,689 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 22:30:08,009 INFO L130 PetriNetUnfolder]: 16821/20771 cut-off events. [2022-12-13 22:30:08,009 INFO L131 PetriNetUnfolder]: For 45033/45033 co-relation queries the response was YES. [2022-12-13 22:30:08,034 INFO L83 FinitePrefix]: Finished finitePrefix Result has 78491 conditions, 20771 events. 16821/20771 cut-off events. For 45033/45033 co-relation queries the response was YES. Maximal size of possible extension queue 549. Compared 80616 event pairs, 1521 based on Foata normal form. 384/21155 useless extension candidates. Maximal degree in co-relation 48669. Up to 9161 conditions per place. [2022-12-13 22:30:08,103 INFO L137 encePairwiseOnDemand]: 286/291 looper letters, 164 selfloop transitions, 19 changer transitions 0/183 dead transitions. [2022-12-13 22:30:08,103 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 183 transitions, 1364 flow [2022-12-13 22:30:08,104 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-13 22:30:08,104 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-12-13 22:30:08,105 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 792 transitions. [2022-12-13 22:30:08,105 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5443298969072164 [2022-12-13 22:30:08,105 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 792 transitions. [2022-12-13 22:30:08,105 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 792 transitions. [2022-12-13 22:30:08,106 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 22:30:08,106 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 792 transitions. [2022-12-13 22:30:08,107 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 158.4) internal successors, (792), 5 states have internal predecessors, (792), 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) [2022-12-13 22:30:08,109 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 291.0) internal successors, (1746), 6 states have internal predecessors, (1746), 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) [2022-12-13 22:30:08,109 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 291.0) internal successors, (1746), 6 states have internal predecessors, (1746), 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) [2022-12-13 22:30:08,109 INFO L175 Difference]: Start difference. First operand has 63 places, 70 transitions, 407 flow. Second operand 5 states and 792 transitions. [2022-12-13 22:30:08,109 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 183 transitions, 1364 flow [2022-12-13 22:30:08,200 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 183 transitions, 1364 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-12-13 22:30:08,201 INFO L231 Difference]: Finished difference. Result has 68 places, 78 transitions, 530 flow [2022-12-13 22:30:08,201 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=291, PETRI_DIFFERENCE_MINUEND_FLOW=407, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=70, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=530, PETRI_PLACES=68, PETRI_TRANSITIONS=78} [2022-12-13 22:30:08,202 INFO L288 CegarLoopForPetriNet]: 50 programPoint places, 18 predicate places. [2022-12-13 22:30:08,202 INFO L495 AbstractCegarLoop]: Abstraction has has 68 places, 78 transitions, 530 flow [2022-12-13 22:30:08,202 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 144.0) internal successors, (576), 4 states have internal predecessors, (576), 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) [2022-12-13 22:30:08,202 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 22:30:08,202 INFO L209 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] [2022-12-13 22:30:08,203 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-12-13 22:30:08,203 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-12-13 22:30:08,203 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 22:30:08,203 INFO L85 PathProgramCache]: Analyzing trace with hash -1761205080, now seen corresponding path program 2 times [2022-12-13 22:30:08,203 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 22:30:08,203 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [251457975] [2022-12-13 22:30:08,203 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 22:30:08,203 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 22:30:08,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:30:08,354 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 22:30:08,355 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 22:30:08,355 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [251457975] [2022-12-13 22:30:08,355 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [251457975] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 22:30:08,355 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 22:30:08,355 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 22:30:08,355 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1879347775] [2022-12-13 22:30:08,355 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 22:30:08,356 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 22:30:08,356 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 22:30:08,356 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 22:30:08,356 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-13 22:30:08,415 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 136 out of 291 [2022-12-13 22:30:08,415 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 78 transitions, 530 flow. Second operand has 4 states, 4 states have (on average 144.0) internal successors, (576), 4 states have internal predecessors, (576), 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) [2022-12-13 22:30:08,415 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 22:30:08,415 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 136 of 291 [2022-12-13 22:30:08,415 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 22:30:09,676 INFO L130 PetriNetUnfolder]: 14303/17637 cut-off events. [2022-12-13 22:30:09,676 INFO L131 PetriNetUnfolder]: For 46794/46794 co-relation queries the response was YES. [2022-12-13 22:30:09,696 INFO L83 FinitePrefix]: Finished finitePrefix Result has 71026 conditions, 17637 events. 14303/17637 cut-off events. For 46794/46794 co-relation queries the response was YES. Maximal size of possible extension queue 470. Compared 67275 event pairs, 825 based on Foata normal form. 344/17981 useless extension candidates. Maximal degree in co-relation 44557. Up to 7597 conditions per place. [2022-12-13 22:30:09,740 INFO L137 encePairwiseOnDemand]: 286/291 looper letters, 162 selfloop transitions, 15 changer transitions 0/177 dead transitions. [2022-12-13 22:30:09,740 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 177 transitions, 1345 flow [2022-12-13 22:30:09,741 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-13 22:30:09,741 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-12-13 22:30:09,742 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 791 transitions. [2022-12-13 22:30:09,742 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5436426116838488 [2022-12-13 22:30:09,742 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 791 transitions. [2022-12-13 22:30:09,742 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 791 transitions. [2022-12-13 22:30:09,742 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 22:30:09,743 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 791 transitions. [2022-12-13 22:30:09,743 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 158.2) internal successors, (791), 5 states have internal predecessors, (791), 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) [2022-12-13 22:30:09,744 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 291.0) internal successors, (1746), 6 states have internal predecessors, (1746), 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) [2022-12-13 22:30:09,745 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 291.0) internal successors, (1746), 6 states have internal predecessors, (1746), 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) [2022-12-13 22:30:09,745 INFO L175 Difference]: Start difference. First operand has 68 places, 78 transitions, 530 flow. Second operand 5 states and 791 transitions. [2022-12-13 22:30:09,745 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 177 transitions, 1345 flow [2022-12-13 22:30:09,884 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 177 transitions, 1326 flow, removed 4 selfloop flow, removed 1 redundant places. [2022-12-13 22:30:09,885 INFO L231 Difference]: Finished difference. Result has 72 places, 74 transitions, 500 flow [2022-12-13 22:30:09,885 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=291, PETRI_DIFFERENCE_MINUEND_FLOW=449, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=73, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=500, PETRI_PLACES=72, PETRI_TRANSITIONS=74} [2022-12-13 22:30:09,886 INFO L288 CegarLoopForPetriNet]: 50 programPoint places, 22 predicate places. [2022-12-13 22:30:09,886 INFO L495 AbstractCegarLoop]: Abstraction has has 72 places, 74 transitions, 500 flow [2022-12-13 22:30:09,887 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 144.0) internal successors, (576), 4 states have internal predecessors, (576), 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) [2022-12-13 22:30:09,887 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 22:30:09,887 INFO L209 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] [2022-12-13 22:30:09,887 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-12-13 22:30:09,887 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-12-13 22:30:09,887 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 22:30:09,887 INFO L85 PathProgramCache]: Analyzing trace with hash -1232064733, now seen corresponding path program 2 times [2022-12-13 22:30:09,888 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 22:30:09,888 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [40817515] [2022-12-13 22:30:09,888 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 22:30:09,888 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 22:30:09,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:30:10,103 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 22:30:10,103 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 22:30:10,103 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [40817515] [2022-12-13 22:30:10,103 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [40817515] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 22:30:10,103 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1649896808] [2022-12-13 22:30:10,103 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-13 22:30:10,103 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 22:30:10,104 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6298f6e9-3549-4323-ac13-33df5804d876/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 22:30:10,104 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6298f6e9-3549-4323-ac13-33df5804d876/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 22:30:10,105 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6298f6e9-3549-4323-ac13-33df5804d876/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-12-13 22:30:10,209 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-12-13 22:30:10,210 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 22:30:10,211 INFO L263 TraceCheckSpWp]: Trace formula consists of 318 conjuncts, 7 conjunts are in the unsatisfiable core [2022-12-13 22:30:10,212 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 22:30:10,381 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 22:30:10,381 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 22:30:10,485 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 22:30:10,485 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1649896808] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 22:30:10,485 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 22:30:10,485 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2022-12-13 22:30:10,485 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1559149837] [2022-12-13 22:30:10,485 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 22:30:10,485 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-13 22:30:10,486 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 22:30:10,486 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-13 22:30:10,486 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2022-12-13 22:30:10,615 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 124 out of 291 [2022-12-13 22:30:10,616 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 74 transitions, 500 flow. Second operand has 7 states, 7 states have (on average 134.85714285714286) internal successors, (944), 7 states have internal predecessors, (944), 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) [2022-12-13 22:30:10,616 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 22:30:10,616 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 124 of 291 [2022-12-13 22:30:10,616 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 22:30:12,288 INFO L130 PetriNetUnfolder]: 16879/20741 cut-off events. [2022-12-13 22:30:12,288 INFO L131 PetriNetUnfolder]: For 53323/53323 co-relation queries the response was YES. [2022-12-13 22:30:12,326 INFO L83 FinitePrefix]: Finished finitePrefix Result has 84788 conditions, 20741 events. 16879/20741 cut-off events. For 53323/53323 co-relation queries the response was YES. Maximal size of possible extension queue 523. Compared 78106 event pairs, 2899 based on Foata normal form. 528/21269 useless extension candidates. Maximal degree in co-relation 52746. Up to 10751 conditions per place. [2022-12-13 22:30:12,401 INFO L137 encePairwiseOnDemand]: 282/291 looper letters, 168 selfloop transitions, 22 changer transitions 3/193 dead transitions. [2022-12-13 22:30:12,401 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 193 transitions, 1428 flow [2022-12-13 22:30:12,402 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-13 22:30:12,402 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-12-13 22:30:12,404 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 886 transitions. [2022-12-13 22:30:12,404 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5074455899198167 [2022-12-13 22:30:12,404 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 886 transitions. [2022-12-13 22:30:12,404 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 886 transitions. [2022-12-13 22:30:12,404 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 22:30:12,404 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 886 transitions. [2022-12-13 22:30:12,406 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 147.66666666666666) internal successors, (886), 6 states have internal predecessors, (886), 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) [2022-12-13 22:30:12,408 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 291.0) internal successors, (2037), 7 states have internal predecessors, (2037), 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) [2022-12-13 22:30:12,408 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 291.0) internal successors, (2037), 7 states have internal predecessors, (2037), 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) [2022-12-13 22:30:12,408 INFO L175 Difference]: Start difference. First operand has 72 places, 74 transitions, 500 flow. Second operand 6 states and 886 transitions. [2022-12-13 22:30:12,408 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 193 transitions, 1428 flow [2022-12-13 22:30:12,540 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 193 transitions, 1411 flow, removed 1 selfloop flow, removed 1 redundant places. [2022-12-13 22:30:12,541 INFO L231 Difference]: Finished difference. Result has 78 places, 77 transitions, 566 flow [2022-12-13 22:30:12,542 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=291, PETRI_DIFFERENCE_MINUEND_FLOW=485, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=74, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=566, PETRI_PLACES=78, PETRI_TRANSITIONS=77} [2022-12-13 22:30:12,542 INFO L288 CegarLoopForPetriNet]: 50 programPoint places, 28 predicate places. [2022-12-13 22:30:12,542 INFO L495 AbstractCegarLoop]: Abstraction has has 78 places, 77 transitions, 566 flow [2022-12-13 22:30:12,543 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 134.85714285714286) internal successors, (944), 7 states have internal predecessors, (944), 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) [2022-12-13 22:30:12,543 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 22:30:12,543 INFO L209 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] [2022-12-13 22:30:12,547 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6298f6e9-3549-4323-ac13-33df5804d876/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-12-13 22:30:12,743 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6298f6e9-3549-4323-ac13-33df5804d876/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 22:30:12,745 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-12-13 22:30:12,746 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 22:30:12,746 INFO L85 PathProgramCache]: Analyzing trace with hash -564114063, now seen corresponding path program 2 times [2022-12-13 22:30:12,747 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 22:30:12,747 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [686162906] [2022-12-13 22:30:12,747 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 22:30:12,748 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 22:30:12,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:30:12,969 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 22:30:12,969 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 22:30:12,969 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [686162906] [2022-12-13 22:30:12,969 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [686162906] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 22:30:12,970 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1765794598] [2022-12-13 22:30:12,970 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-13 22:30:12,970 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 22:30:12,970 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6298f6e9-3549-4323-ac13-33df5804d876/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 22:30:12,971 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6298f6e9-3549-4323-ac13-33df5804d876/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 22:30:12,972 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6298f6e9-3549-4323-ac13-33df5804d876/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-12-13 22:30:13,096 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-12-13 22:30:13,096 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 22:30:13,098 INFO L263 TraceCheckSpWp]: Trace formula consists of 318 conjuncts, 7 conjunts are in the unsatisfiable core [2022-12-13 22:30:13,099 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 22:30:13,283 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 22:30:13,283 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 22:30:13,337 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 22:30:13,338 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1765794598] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 22:30:13,338 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 22:30:13,338 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 5 [2022-12-13 22:30:13,338 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1048526266] [2022-12-13 22:30:13,338 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 22:30:13,339 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-13 22:30:13,339 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 22:30:13,339 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-13 22:30:13,339 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-12-13 22:30:13,442 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 136 out of 291 [2022-12-13 22:30:13,443 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 77 transitions, 566 flow. Second operand has 6 states, 6 states have (on average 144.33333333333334) internal successors, (866), 6 states have internal predecessors, (866), 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) [2022-12-13 22:30:13,443 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 22:30:13,444 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 136 of 291 [2022-12-13 22:30:13,444 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 22:30:17,121 INFO L130 PetriNetUnfolder]: 43127/52937 cut-off events. [2022-12-13 22:30:17,121 INFO L131 PetriNetUnfolder]: For 178429/178429 co-relation queries the response was YES. [2022-12-13 22:30:17,227 INFO L83 FinitePrefix]: Finished finitePrefix Result has 227033 conditions, 52937 events. 43127/52937 cut-off events. For 178429/178429 co-relation queries the response was YES. Maximal size of possible extension queue 1312. Compared 222250 event pairs, 9059 based on Foata normal form. 1412/54349 useless extension candidates. Maximal degree in co-relation 194948. Up to 25269 conditions per place. [2022-12-13 22:30:17,442 INFO L137 encePairwiseOnDemand]: 286/291 looper letters, 214 selfloop transitions, 10 changer transitions 0/224 dead transitions. [2022-12-13 22:30:17,443 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 224 transitions, 1876 flow [2022-12-13 22:30:17,444 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-13 22:30:17,444 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-12-13 22:30:17,446 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 806 transitions. [2022-12-13 22:30:17,446 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5539518900343643 [2022-12-13 22:30:17,447 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 806 transitions. [2022-12-13 22:30:17,447 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 806 transitions. [2022-12-13 22:30:17,447 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 22:30:17,448 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 806 transitions. [2022-12-13 22:30:17,450 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 161.2) internal successors, (806), 5 states have internal predecessors, (806), 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) [2022-12-13 22:30:17,453 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 291.0) internal successors, (1746), 6 states have internal predecessors, (1746), 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) [2022-12-13 22:30:17,454 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 291.0) internal successors, (1746), 6 states have internal predecessors, (1746), 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) [2022-12-13 22:30:17,454 INFO L175 Difference]: Start difference. First operand has 78 places, 77 transitions, 566 flow. Second operand 5 states and 806 transitions. [2022-12-13 22:30:17,454 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 224 transitions, 1876 flow [2022-12-13 22:30:18,031 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 224 transitions, 1786 flow, removed 28 selfloop flow, removed 2 redundant places. [2022-12-13 22:30:18,033 INFO L231 Difference]: Finished difference. Result has 83 places, 82 transitions, 588 flow [2022-12-13 22:30:18,033 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=291, PETRI_DIFFERENCE_MINUEND_FLOW=524, PETRI_DIFFERENCE_MINUEND_PLACES=76, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=77, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=69, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=588, PETRI_PLACES=83, PETRI_TRANSITIONS=82} [2022-12-13 22:30:18,033 INFO L288 CegarLoopForPetriNet]: 50 programPoint places, 33 predicate places. [2022-12-13 22:30:18,033 INFO L495 AbstractCegarLoop]: Abstraction has has 83 places, 82 transitions, 588 flow [2022-12-13 22:30:18,034 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 144.33333333333334) internal successors, (866), 6 states have internal predecessors, (866), 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) [2022-12-13 22:30:18,034 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 22:30:18,034 INFO L209 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] [2022-12-13 22:30:18,038 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6298f6e9-3549-4323-ac13-33df5804d876/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2022-12-13 22:30:18,235 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6298f6e9-3549-4323-ac13-33df5804d876/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-12-13 22:30:18,236 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-12-13 22:30:18,237 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 22:30:18,238 INFO L85 PathProgramCache]: Analyzing trace with hash -1006463881, now seen corresponding path program 1 times [2022-12-13 22:30:18,239 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 22:30:18,239 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1434091853] [2022-12-13 22:30:18,240 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 22:30:18,241 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 22:30:18,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:30:18,407 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 22:30:18,407 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 22:30:18,407 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1434091853] [2022-12-13 22:30:18,407 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1434091853] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 22:30:18,407 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 22:30:18,408 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 22:30:18,408 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1471275860] [2022-12-13 22:30:18,408 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 22:30:18,408 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 22:30:18,408 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 22:30:18,409 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 22:30:18,409 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-13 22:30:18,471 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 136 out of 291 [2022-12-13 22:30:18,471 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 82 transitions, 588 flow. Second operand has 4 states, 4 states have (on average 144.0) internal successors, (576), 4 states have internal predecessors, (576), 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) [2022-12-13 22:30:18,472 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 22:30:18,472 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 136 of 291 [2022-12-13 22:30:18,472 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 22:30:23,373 INFO L130 PetriNetUnfolder]: 56267/69113 cut-off events. [2022-12-13 22:30:23,373 INFO L131 PetriNetUnfolder]: For 248530/248530 co-relation queries the response was YES. [2022-12-13 22:30:23,523 INFO L83 FinitePrefix]: Finished finitePrefix Result has 309717 conditions, 69113 events. 56267/69113 cut-off events. For 248530/248530 co-relation queries the response was YES. Maximal size of possible extension queue 1684. Compared 300003 event pairs, 15485 based on Foata normal form. 1028/70141 useless extension candidates. Maximal degree in co-relation 269153. Up to 37185 conditions per place. [2022-12-13 22:30:23,747 INFO L137 encePairwiseOnDemand]: 286/291 looper letters, 217 selfloop transitions, 10 changer transitions 0/227 dead transitions. [2022-12-13 22:30:23,747 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 87 places, 227 transitions, 1864 flow [2022-12-13 22:30:23,748 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-13 22:30:23,748 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-12-13 22:30:23,749 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 806 transitions. [2022-12-13 22:30:23,750 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5539518900343643 [2022-12-13 22:30:23,750 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 806 transitions. [2022-12-13 22:30:23,750 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 806 transitions. [2022-12-13 22:30:23,750 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 22:30:23,750 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 806 transitions. [2022-12-13 22:30:23,751 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 161.2) internal successors, (806), 5 states have internal predecessors, (806), 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) [2022-12-13 22:30:23,753 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 291.0) internal successors, (1746), 6 states have internal predecessors, (1746), 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) [2022-12-13 22:30:23,753 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 291.0) internal successors, (1746), 6 states have internal predecessors, (1746), 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) [2022-12-13 22:30:23,753 INFO L175 Difference]: Start difference. First operand has 83 places, 82 transitions, 588 flow. Second operand 5 states and 806 transitions. [2022-12-13 22:30:23,753 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 87 places, 227 transitions, 1864 flow [2022-12-13 22:30:24,729 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 87 places, 227 transitions, 1862 flow, removed 1 selfloop flow, removed 0 redundant places. [2022-12-13 22:30:24,730 INFO L231 Difference]: Finished difference. Result has 89 places, 85 transitions, 641 flow [2022-12-13 22:30:24,730 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=291, PETRI_DIFFERENCE_MINUEND_FLOW=586, PETRI_DIFFERENCE_MINUEND_PLACES=83, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=82, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=73, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=641, PETRI_PLACES=89, PETRI_TRANSITIONS=85} [2022-12-13 22:30:24,731 INFO L288 CegarLoopForPetriNet]: 50 programPoint places, 39 predicate places. [2022-12-13 22:30:24,731 INFO L495 AbstractCegarLoop]: Abstraction has has 89 places, 85 transitions, 641 flow [2022-12-13 22:30:24,731 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 144.0) internal successors, (576), 4 states have internal predecessors, (576), 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) [2022-12-13 22:30:24,731 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 22:30:24,731 INFO L209 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] [2022-12-13 22:30:24,731 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-12-13 22:30:24,731 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-12-13 22:30:24,731 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 22:30:24,731 INFO L85 PathProgramCache]: Analyzing trace with hash -1993813425, now seen corresponding path program 1 times [2022-12-13 22:30:24,732 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 22:30:24,732 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1602310272] [2022-12-13 22:30:24,732 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 22:30:24,732 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 22:30:24,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:30:25,278 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 22:30:25,279 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 22:30:25,279 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1602310272] [2022-12-13 22:30:25,279 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1602310272] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 22:30:25,279 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [491381761] [2022-12-13 22:30:25,279 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 22:30:25,279 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 22:30:25,279 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6298f6e9-3549-4323-ac13-33df5804d876/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 22:30:25,280 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6298f6e9-3549-4323-ac13-33df5804d876/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 22:30:25,281 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6298f6e9-3549-4323-ac13-33df5804d876/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-12-13 22:30:26,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:30:26,934 INFO L263 TraceCheckSpWp]: Trace formula consists of 321 conjuncts, 17 conjunts are in the unsatisfiable core [2022-12-13 22:30:26,935 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 22:30:48,511 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 22:30:48,511 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 22:30:58,358 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 22:30:58,358 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [491381761] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 22:30:58,358 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 22:30:58,358 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 14 [2022-12-13 22:30:58,358 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1318636728] [2022-12-13 22:30:58,359 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 22:30:58,359 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-12-13 22:30:58,359 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 22:30:58,359 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-12-13 22:30:58,359 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=158, Unknown=5, NotChecked=0, Total=240 [2022-12-13 22:31:00,049 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.58s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-12-13 22:31:02,595 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-12-13 22:31:04,703 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-12-13 22:31:06,992 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-12-13 22:31:09,049 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.67s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-12-13 22:31:10,255 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.21s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-12-13 22:31:12,267 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-12-13 22:31:14,410 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-12-13 22:31:16,533 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-12-13 22:31:18,917 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-12-13 22:31:20,888 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.91s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-12-13 22:31:23,217 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-12-13 22:31:25,293 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-12-13 22:31:27,418 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-12-13 22:31:27,424 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 114 out of 291 [2022-12-13 22:31:27,426 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 89 places, 85 transitions, 641 flow. Second operand has 16 states, 16 states have (on average 119.4375) internal successors, (1911), 16 states have internal predecessors, (1911), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 22:31:27,426 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 22:31:27,426 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 114 of 291 [2022-12-13 22:31:27,426 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 22:31:29,634 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.40s for a HTC check with result VALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-12-13 22:31:33,448 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.17s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-12-13 22:31:35,533 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-12-13 22:31:38,785 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-12-13 22:31:40,800 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-12-13 22:31:42,926 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-12-13 22:31:45,784 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-12-13 22:31:50,446 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-12-13 22:32:13,512 WARN L233 SmtUtils]: Spent 6.88s on a formula simplification. DAG size of input: 78 DAG size of output: 50 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-13 22:32:22,686 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-12-13 22:32:26,771 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-12-13 22:32:28,816 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-12-13 22:32:32,631 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-12-13 22:32:35,086 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-12-13 22:32:36,603 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.24s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-12-13 22:32:39,917 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-12-13 22:32:42,058 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-12-13 22:32:43,952 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.89s for a HTC check with result VALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-12-13 22:32:45,957 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-12-13 22:32:51,725 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-12-13 22:32:53,733 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-12-13 22:32:56,558 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-12-13 22:33:02,532 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-12-13 22:33:04,538 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-12-13 22:33:06,287 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.75s for a HTC check with result VALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-12-13 22:33:24,936 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-12-13 22:33:25,957 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.02s for a HTC check with result VALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-12-13 22:33:27,422 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.46s for a HTC check with result VALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-12-13 22:33:29,428 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-12-13 22:33:31,435 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-12-13 22:33:33,440 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-12-13 22:33:35,447 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-12-13 22:33:38,603 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.59s for a HTC check with result VALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-12-13 22:33:40,606 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-12-13 22:33:45,494 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-12-13 22:33:47,592 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-12-13 22:33:49,627 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-12-13 22:33:54,006 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-12-13 22:33:56,136 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-12-13 22:33:58,179 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-12-13 22:34:00,205 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-12-13 22:34:03,261 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-12-13 22:34:04,811 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.54s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-12-13 22:34:07,193 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-12-13 22:35:28,265 WARN L233 SmtUtils]: Spent 1.20m on a formula simplification. DAG size of input: 109 DAG size of output: 43 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-13 22:35:30,273 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-12-13 22:35:31,420 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.15s for a HTC check with result VALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-12-13 22:35:33,423 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-12-13 22:35:35,282 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.23s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-12-13 22:35:37,441 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-12-13 22:35:41,773 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-12-13 22:35:44,538 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.67s for a HTC check with result VALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-12-13 22:35:45,694 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.16s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-12-13 22:35:47,714 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-12-13 22:35:49,717 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-12-13 22:35:51,820 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-12-13 22:35:53,835 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-12-13 22:35:56,807 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-12-13 22:35:58,813 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-12-13 22:36:00,816 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-12-13 22:36:05,589 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-12-13 22:36:07,607 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-12-13 22:37:31,322 WARN L233 SmtUtils]: Spent 1.13m on a formula simplification. DAG size of input: 97 DAG size of output: 43 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-13 22:37:33,331 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-12-13 22:37:35,397 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.07s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-12-13 22:37:37,431 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-12-13 22:37:40,803 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-12-13 22:37:42,831 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-12-13 22:37:43,842 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.01s for a HTC check with result VALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-12-13 22:37:45,848 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-12-13 22:37:47,862 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-12-13 22:37:50,315 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.20s for a HTC check with result VALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-12-13 22:37:52,318 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-12-13 22:37:56,033 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.50s for a HTC check with result VALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-12-13 22:37:58,134 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-12-13 22:38:01,239 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-12-13 22:38:03,247 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-12-13 22:38:05,251 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-12-13 22:38:08,533 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-12-13 22:38:09,844 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.03s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-12-13 22:38:11,096 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.25s for a HTC check with result VALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-12-13 22:38:13,102 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-12-13 22:38:15,127 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-12-13 22:38:17,130 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-12-13 22:38:19,159 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-12-13 22:38:21,183 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result VALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-12-13 22:38:24,026 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-12-13 22:38:26,029 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-12-13 22:38:28,034 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-12-13 22:38:30,951 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-12-13 22:38:33,452 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-12-13 22:38:33,866 INFO L130 PetriNetUnfolder]: 72806/89782 cut-off events. [2022-12-13 22:38:33,867 INFO L131 PetriNetUnfolder]: For 369384/369384 co-relation queries the response was YES. [2022-12-13 22:38:34,103 INFO L83 FinitePrefix]: Finished finitePrefix Result has 423930 conditions, 89782 events. 72806/89782 cut-off events. For 369384/369384 co-relation queries the response was YES. Maximal size of possible extension queue 2260. Compared 409591 event pairs, 17284 based on Foata normal form. 130/89912 useless extension candidates. Maximal degree in co-relation 374939. Up to 73603 conditions per place. [2022-12-13 22:38:34,390 INFO L137 encePairwiseOnDemand]: 268/291 looper letters, 369 selfloop transitions, 205 changer transitions 21/595 dead transitions. [2022-12-13 22:38:34,390 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 109 places, 595 transitions, 4830 flow [2022-12-13 22:38:34,391 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-12-13 22:38:34,391 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2022-12-13 22:38:34,395 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 2845 transitions. [2022-12-13 22:38:34,395 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4655539191621666 [2022-12-13 22:38:34,395 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 2845 transitions. [2022-12-13 22:38:34,395 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 2845 transitions. [2022-12-13 22:38:34,396 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 22:38:34,397 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 2845 transitions. [2022-12-13 22:38:34,400 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 135.47619047619048) internal successors, (2845), 21 states have internal predecessors, (2845), 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) [2022-12-13 22:38:34,405 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 291.0) internal successors, (6402), 22 states have internal predecessors, (6402), 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) [2022-12-13 22:38:34,406 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 291.0) internal successors, (6402), 22 states have internal predecessors, (6402), 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) [2022-12-13 22:38:34,406 INFO L175 Difference]: Start difference. First operand has 89 places, 85 transitions, 641 flow. Second operand 21 states and 2845 transitions. [2022-12-13 22:38:34,406 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 109 places, 595 transitions, 4830 flow [2022-12-13 22:38:37,396 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 107 places, 595 transitions, 4702 flow, removed 24 selfloop flow, removed 2 redundant places. [2022-12-13 22:38:37,400 INFO L231 Difference]: Finished difference. Result has 117 places, 285 transitions, 2827 flow [2022-12-13 22:38:37,400 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=291, PETRI_DIFFERENCE_MINUEND_FLOW=615, PETRI_DIFFERENCE_MINUEND_PLACES=87, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=85, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=2827, PETRI_PLACES=117, PETRI_TRANSITIONS=285} [2022-12-13 22:38:37,400 INFO L288 CegarLoopForPetriNet]: 50 programPoint places, 67 predicate places. [2022-12-13 22:38:37,400 INFO L495 AbstractCegarLoop]: Abstraction has has 117 places, 285 transitions, 2827 flow [2022-12-13 22:38:37,401 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 119.4375) internal successors, (1911), 16 states have internal predecessors, (1911), 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) [2022-12-13 22:38:37,401 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 22:38:37,401 INFO L209 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] [2022-12-13 22:38:37,406 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6298f6e9-3549-4323-ac13-33df5804d876/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2022-12-13 22:38:37,602 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6298f6e9-3549-4323-ac13-33df5804d876/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 22:38:37,603 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-12-13 22:38:37,603 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 22:38:37,604 INFO L85 PathProgramCache]: Analyzing trace with hash -1364335529, now seen corresponding path program 2 times [2022-12-13 22:38:37,604 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 22:38:37,604 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2051251185] [2022-12-13 22:38:37,605 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 22:38:37,605 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 22:38:37,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:38:38,138 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 22:38:38,139 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 22:38:38,139 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2051251185] [2022-12-13 22:38:38,139 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2051251185] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 22:38:38,139 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [722490737] [2022-12-13 22:38:38,139 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-13 22:38:38,139 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 22:38:38,139 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6298f6e9-3549-4323-ac13-33df5804d876/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 22:38:38,140 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6298f6e9-3549-4323-ac13-33df5804d876/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 22:38:38,141 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6298f6e9-3549-4323-ac13-33df5804d876/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-12-13 22:38:39,761 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-12-13 22:38:39,762 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 22:38:39,764 INFO L263 TraceCheckSpWp]: Trace formula consists of 321 conjuncts, 17 conjunts are in the unsatisfiable core [2022-12-13 22:38:39,766 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 22:38:58,766 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 22:38:58,766 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 22:39:07,333 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 22:39:07,333 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [722490737] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 22:39:07,333 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 22:39:07,333 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 14 [2022-12-13 22:39:07,333 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1262012586] [2022-12-13 22:39:07,333 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 22:39:07,334 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-12-13 22:39:07,334 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 22:39:07,334 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-12-13 22:39:07,334 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=160, Unknown=4, NotChecked=0, Total=240 [2022-12-13 22:39:09,337 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.08s for a HTC check with result VALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-12-13 22:39:11,923 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-12-13 22:39:13,932 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-12-13 22:39:15,940 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-12-13 22:39:17,060 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.09s for a HTC check with result VALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-12-13 22:39:19,322 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-12-13 22:39:20,172 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 114 out of 291 [2022-12-13 22:39:20,173 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 117 places, 285 transitions, 2827 flow. Second operand has 16 states, 16 states have (on average 119.9375) internal successors, (1919), 16 states have internal predecessors, (1919), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 22:39:20,173 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 22:39:20,173 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 114 of 291 [2022-12-13 22:39:20,173 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 22:39:32,260 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-12-13 22:39:34,267 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-12-13 22:39:36,281 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-12-13 22:39:38,395 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-12-13 22:39:40,603 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-12-13 22:39:45,029 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-12-13 22:39:47,062 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-12-13 22:39:55,072 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-12-13 22:39:57,078 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-12-13 22:39:59,769 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-12-13 22:40:01,776 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-12-13 22:40:03,338 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.48s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-12-13 22:40:07,602 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-12-13 22:40:08,852 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.25s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-12-13 22:40:10,892 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-12-13 22:40:23,601 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-12-13 22:40:28,914 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-12-13 22:40:30,934 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-12-13 22:40:32,802 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.07s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-12-13 22:40:33,869 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.07s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-12-13 22:40:35,902 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-12-13 22:40:37,910 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-12-13 22:40:40,863 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.07s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-12-13 22:40:43,938 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-12-13 22:40:47,780 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-12-13 22:40:49,950 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.31s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-12-13 22:40:54,885 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.29s for a HTC check with result VALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-12-13 22:40:56,966 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-12-13 22:40:59,542 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.63s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-12-13 22:41:01,547 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-12-13 22:41:03,582 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-12-13 22:41:05,594 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-12-13 22:41:08,536 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-12-13 22:41:13,129 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-12-13 22:41:15,267 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-12-13 22:41:21,058 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.76s for a HTC check with result VALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-12-13 22:41:27,877 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-12-13 22:41:33,826 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.43s for a HTC check with result VALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-12-13 22:41:37,668 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-12-13 22:41:42,432 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-12-13 22:41:48,384 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-12-13 22:41:50,782 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-12-13 22:41:53,283 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-12-13 22:41:55,332 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.40s for a HTC check with result VALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-12-13 22:41:56,416 INFO L130 PetriNetUnfolder]: 91681/113333 cut-off events. [2022-12-13 22:41:56,416 INFO L131 PetriNetUnfolder]: For 666085/666085 co-relation queries the response was YES. [2022-12-13 22:41:56,883 INFO L83 FinitePrefix]: Finished finitePrefix Result has 637129 conditions, 113333 events. 91681/113333 cut-off events. For 666085/666085 co-relation queries the response was YES. Maximal size of possible extension queue 2913. Compared 537815 event pairs, 17907 based on Foata normal form. 68/113401 useless extension candidates. Maximal degree in co-relation 632986. Up to 93473 conditions per place. [2022-12-13 22:41:57,330 INFO L137 encePairwiseOnDemand]: 268/291 looper letters, 516 selfloop transitions, 281 changer transitions 24/821 dead transitions. [2022-12-13 22:41:57,330 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 134 places, 821 transitions, 8930 flow [2022-12-13 22:41:57,332 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-12-13 22:41:57,332 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-12-13 22:41:57,335 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 2455 transitions. [2022-12-13 22:41:57,335 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4686903398243604 [2022-12-13 22:41:57,336 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 2455 transitions. [2022-12-13 22:41:57,336 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 2455 transitions. [2022-12-13 22:41:57,336 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 22:41:57,337 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 2455 transitions. [2022-12-13 22:41:57,340 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 136.38888888888889) internal successors, (2455), 18 states have internal predecessors, (2455), 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) [2022-12-13 22:41:57,344 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 291.0) internal successors, (5529), 19 states have internal predecessors, (5529), 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) [2022-12-13 22:41:57,344 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 291.0) internal successors, (5529), 19 states have internal predecessors, (5529), 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) [2022-12-13 22:41:57,344 INFO L175 Difference]: Start difference. First operand has 117 places, 285 transitions, 2827 flow. Second operand 18 states and 2455 transitions. [2022-12-13 22:41:57,344 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 134 places, 821 transitions, 8930 flow [2022-12-13 22:42:09,287 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 134 places, 821 transitions, 8452 flow, removed 239 selfloop flow, removed 0 redundant places. [2022-12-13 22:42:09,293 INFO L231 Difference]: Finished difference. Result has 146 places, 527 transitions, 5840 flow [2022-12-13 22:42:09,294 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=291, PETRI_DIFFERENCE_MINUEND_FLOW=2415, PETRI_DIFFERENCE_MINUEND_PLACES=117, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=285, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=87, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=164, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=5840, PETRI_PLACES=146, PETRI_TRANSITIONS=527} [2022-12-13 22:42:09,294 INFO L288 CegarLoopForPetriNet]: 50 programPoint places, 96 predicate places. [2022-12-13 22:42:09,294 INFO L495 AbstractCegarLoop]: Abstraction has has 146 places, 527 transitions, 5840 flow [2022-12-13 22:42:09,295 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 119.9375) internal successors, (1919), 16 states have internal predecessors, (1919), 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) [2022-12-13 22:42:09,295 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 22:42:09,295 INFO L209 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] [2022-12-13 22:42:09,299 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6298f6e9-3549-4323-ac13-33df5804d876/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2022-12-13 22:42:09,495 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6298f6e9-3549-4323-ac13-33df5804d876/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 22:42:09,497 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-12-13 22:42:09,497 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 22:42:09,498 INFO L85 PathProgramCache]: Analyzing trace with hash -38920596, now seen corresponding path program 1 times [2022-12-13 22:42:09,498 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 22:42:09,498 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1665719514] [2022-12-13 22:42:09,498 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 22:42:09,499 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 22:42:09,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:42:10,103 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 22:42:10,103 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 22:42:10,103 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1665719514] [2022-12-13 22:42:10,104 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1665719514] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 22:42:10,104 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1450071088] [2022-12-13 22:42:10,104 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 22:42:10,104 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 22:42:10,104 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6298f6e9-3549-4323-ac13-33df5804d876/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 22:42:10,105 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6298f6e9-3549-4323-ac13-33df5804d876/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 22:42:10,105 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6298f6e9-3549-4323-ac13-33df5804d876/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-12-13 22:42:10,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:42:10,364 INFO L263 TraceCheckSpWp]: Trace formula consists of 321 conjuncts, 17 conjunts are in the unsatisfiable core [2022-12-13 22:42:10,365 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 22:42:17,371 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 22:42:17,372 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 22:42:19,201 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 22:42:19,201 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1450071088] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 22:42:19,201 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 22:42:19,201 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 14 [2022-12-13 22:42:19,201 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1005223267] [2022-12-13 22:42:19,201 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 22:42:19,201 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-12-13 22:42:19,201 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 22:42:19,202 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-12-13 22:42:19,202 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=168, Unknown=0, NotChecked=0, Total=240 [2022-12-13 22:42:21,946 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-12-13 22:42:24,634 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.23s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-12-13 22:42:30,276 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 123 out of 291 [2022-12-13 22:42:30,277 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 146 places, 527 transitions, 5840 flow. Second operand has 16 states, 16 states have (on average 128.5625) internal successors, (2057), 16 states have internal predecessors, (2057), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 22:42:30,277 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 22:42:30,277 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 123 of 291 [2022-12-13 22:42:30,277 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 22:42:35,780 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-12-13 22:42:38,160 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.47s for a HTC check with result VALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-12-13 22:42:45,120 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-12-13 22:42:48,055 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-12-13 22:42:51,373 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-12-13 22:42:54,018 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.10s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-12-13 22:42:56,047 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-12-13 22:42:58,229 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-12-13 22:43:03,230 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-12-13 22:43:05,640 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-12-13 22:43:08,794 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-12-13 22:43:10,800 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-12-13 22:43:11,932 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.10s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-12-13 22:43:15,306 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-12-13 22:43:17,126 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.82s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-12-13 22:43:35,032 INFO L130 PetriNetUnfolder]: 109443/135203 cut-off events. [2022-12-13 22:43:35,032 INFO L131 PetriNetUnfolder]: For 1157308/1157308 co-relation queries the response was YES. [2022-12-13 22:43:35,810 INFO L83 FinitePrefix]: Finished finitePrefix Result has 878340 conditions, 135203 events. 109443/135203 cut-off events. For 1157308/1157308 co-relation queries the response was YES. Maximal size of possible extension queue 3466. Compared 657695 event pairs, 17135 based on Foata normal form. 94/135173 useless extension candidates. Maximal degree in co-relation 875664. Up to 119917 conditions per place. [2022-12-13 22:43:36,423 INFO L137 encePairwiseOnDemand]: 281/291 looper letters, 748 selfloop transitions, 145 changer transitions 5/898 dead transitions. [2022-12-13 22:43:36,423 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 159 places, 898 transitions, 10896 flow [2022-12-13 22:43:36,425 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-12-13 22:43:36,425 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2022-12-13 22:43:36,427 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 2054 transitions. [2022-12-13 22:43:36,428 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5041728031418753 [2022-12-13 22:43:36,428 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 2054 transitions. [2022-12-13 22:43:36,428 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 2054 transitions. [2022-12-13 22:43:36,429 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 22:43:36,429 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 2054 transitions. [2022-12-13 22:43:36,431 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 146.71428571428572) internal successors, (2054), 14 states have internal predecessors, (2054), 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) [2022-12-13 22:43:36,434 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 291.0) internal successors, (4365), 15 states have internal predecessors, (4365), 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) [2022-12-13 22:43:36,434 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 291.0) internal successors, (4365), 15 states have internal predecessors, (4365), 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) [2022-12-13 22:43:36,435 INFO L175 Difference]: Start difference. First operand has 146 places, 527 transitions, 5840 flow. Second operand 14 states and 2054 transitions. [2022-12-13 22:43:36,435 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 159 places, 898 transitions, 10896 flow [2022-12-13 22:43:54,722 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 158 places, 898 transitions, 10385 flow, removed 247 selfloop flow, removed 1 redundant places. [2022-12-13 22:43:54,729 INFO L231 Difference]: Finished difference. Result has 166 places, 657 transitions, 7130 flow [2022-12-13 22:43:54,730 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=291, PETRI_DIFFERENCE_MINUEND_FLOW=5329, PETRI_DIFFERENCE_MINUEND_PLACES=145, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=527, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=485, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=7130, PETRI_PLACES=166, PETRI_TRANSITIONS=657} [2022-12-13 22:43:54,730 INFO L288 CegarLoopForPetriNet]: 50 programPoint places, 116 predicate places. [2022-12-13 22:43:54,730 INFO L495 AbstractCegarLoop]: Abstraction has has 166 places, 657 transitions, 7130 flow [2022-12-13 22:43:54,731 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 128.5625) internal successors, (2057), 16 states have internal predecessors, (2057), 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) [2022-12-13 22:43:54,731 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 22:43:54,731 INFO L209 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] [2022-12-13 22:43:54,736 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6298f6e9-3549-4323-ac13-33df5804d876/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2022-12-13 22:43:54,931 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6298f6e9-3549-4323-ac13-33df5804d876/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2022-12-13 22:43:54,932 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-12-13 22:43:54,933 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 22:43:54,933 INFO L85 PathProgramCache]: Analyzing trace with hash -849044819, now seen corresponding path program 1 times [2022-12-13 22:43:54,934 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 22:43:54,934 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [929296980] [2022-12-13 22:43:54,934 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 22:43:54,935 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 22:43:55,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:43:55,437 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 22:43:55,437 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 22:43:55,437 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [929296980] [2022-12-13 22:43:55,437 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [929296980] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 22:43:55,437 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1172998862] [2022-12-13 22:43:55,437 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 22:43:55,438 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 22:43:55,438 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6298f6e9-3549-4323-ac13-33df5804d876/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 22:43:55,438 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6298f6e9-3549-4323-ac13-33df5804d876/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 22:43:55,439 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6298f6e9-3549-4323-ac13-33df5804d876/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-12-13 22:43:55,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:43:55,752 INFO L263 TraceCheckSpWp]: Trace formula consists of 321 conjuncts, 17 conjunts are in the unsatisfiable core [2022-12-13 22:43:55,754 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 22:44:01,800 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 22:44:01,800 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 22:44:05,124 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 22:44:05,124 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1172998862] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 22:44:05,124 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 22:44:05,124 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 14 [2022-12-13 22:44:05,124 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [166328316] [2022-12-13 22:44:05,124 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 22:44:05,125 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-12-13 22:44:05,125 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 22:44:05,125 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-12-13 22:44:05,125 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=168, Unknown=2, NotChecked=0, Total=240 [2022-12-13 22:44:07,175 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-12-13 22:44:08,214 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.00s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-12-13 22:44:10,348 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.13s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-12-13 22:44:12,920 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.06s for a HTC check with result VALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-12-13 22:44:13,849 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 114 out of 291 [2022-12-13 22:44:13,850 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 166 places, 657 transitions, 7130 flow. Second operand has 16 states, 16 states have (on average 119.3125) internal successors, (1909), 16 states have internal predecessors, (1909), 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) [2022-12-13 22:44:13,850 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 22:44:13,850 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 114 of 291 [2022-12-13 22:44:13,850 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand