./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/weaver/chl-poker-hand-symm.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 5e519f3a 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_a819c3b2-1e20-4e4a-9190-ed8be6a5a066/bin/uautomizer-Dbtcem3rbc/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a819c3b2-1e20-4e4a-9190-ed8be6a5a066/bin/uautomizer-Dbtcem3rbc/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a819c3b2-1e20-4e4a-9190-ed8be6a5a066/bin/uautomizer-Dbtcem3rbc/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a819c3b2-1e20-4e4a-9190-ed8be6a5a066/bin/uautomizer-Dbtcem3rbc/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/chl-poker-hand-symm.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a819c3b2-1e20-4e4a-9190-ed8be6a5a066/bin/uautomizer-Dbtcem3rbc/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a819c3b2-1e20-4e4a-9190-ed8be6a5a066/bin/uautomizer-Dbtcem3rbc --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 83dad307cba3d7607e136206fd160e874fd8a32bc88cbef3e5973f117a7651cc --- 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-5e519f3 [2022-11-02 19:52:47,835 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-02 19:52:47,838 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-02 19:52:47,899 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-02 19:52:47,899 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-02 19:52:47,904 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-02 19:52:47,907 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-02 19:52:47,913 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-02 19:52:47,916 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-02 19:52:47,922 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-02 19:52:47,923 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-02 19:52:47,926 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-02 19:52:47,927 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-02 19:52:47,930 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-02 19:52:47,932 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-02 19:52:47,935 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-02 19:52:47,937 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-02 19:52:47,938 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-02 19:52:47,940 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-02 19:52:47,948 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-02 19:52:47,950 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-02 19:52:47,953 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-02 19:52:47,957 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-02 19:52:47,958 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-02 19:52:47,968 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-02 19:52:47,969 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-02 19:52:47,969 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-02 19:52:47,971 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-02 19:52:47,972 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-02 19:52:47,974 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-02 19:52:47,974 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-02 19:52:47,977 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-02 19:52:47,979 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-02 19:52:47,981 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-02 19:52:47,982 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-02 19:52:47,983 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-02 19:52:47,984 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-02 19:52:47,984 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-02 19:52:47,984 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-02 19:52:47,986 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-02 19:52:47,987 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-02 19:52:47,988 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a819c3b2-1e20-4e4a-9190-ed8be6a5a066/bin/uautomizer-Dbtcem3rbc/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-11-02 19:52:48,033 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-02 19:52:48,033 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-02 19:52:48,034 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-02 19:52:48,034 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-02 19:52:48,036 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-02 19:52:48,036 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-02 19:52:48,037 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-02 19:52:48,037 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-02 19:52:48,038 INFO L138 SettingsManager]: * Use SBE=true [2022-11-02 19:52:48,038 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-02 19:52:48,040 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-02 19:52:48,040 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-02 19:52:48,040 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-02 19:52:48,041 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-02 19:52:48,041 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-02 19:52:48,041 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-02 19:52:48,042 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-02 19:52:48,042 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-02 19:52:48,042 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-02 19:52:48,043 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-02 19:52:48,043 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-02 19:52:48,043 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-02 19:52:48,044 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-02 19:52:48,044 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-02 19:52:48,044 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-02 19:52:48,045 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-02 19:52:48,045 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-02 19:52:48,046 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-02 19:52:48,046 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-02 19:52:48,046 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-02 19:52:48,047 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-02 19:52:48,047 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-02 19:52:48,048 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-02 19:52:48,048 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a819c3b2-1e20-4e4a-9190-ed8be6a5a066/bin/uautomizer-Dbtcem3rbc/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a819c3b2-1e20-4e4a-9190-ed8be6a5a066/bin/uautomizer-Dbtcem3rbc Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 83dad307cba3d7607e136206fd160e874fd8a32bc88cbef3e5973f117a7651cc [2022-11-02 19:52:48,380 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-02 19:52:48,422 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-02 19:52:48,425 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-02 19:52:48,426 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-02 19:52:48,427 INFO L275 PluginConnector]: CDTParser initialized [2022-11-02 19:52:48,429 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a819c3b2-1e20-4e4a-9190-ed8be6a5a066/bin/uautomizer-Dbtcem3rbc/../../sv-benchmarks/c/weaver/chl-poker-hand-symm.wvr.c [2022-11-02 19:52:48,525 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a819c3b2-1e20-4e4a-9190-ed8be6a5a066/bin/uautomizer-Dbtcem3rbc/data/dea07e35b/463d74ec55894a82ad56107c8817bc0e/FLAG6339ce01a [2022-11-02 19:52:49,105 INFO L306 CDTParser]: Found 1 translation units. [2022-11-02 19:52:49,106 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a819c3b2-1e20-4e4a-9190-ed8be6a5a066/sv-benchmarks/c/weaver/chl-poker-hand-symm.wvr.c [2022-11-02 19:52:49,117 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a819c3b2-1e20-4e4a-9190-ed8be6a5a066/bin/uautomizer-Dbtcem3rbc/data/dea07e35b/463d74ec55894a82ad56107c8817bc0e/FLAG6339ce01a [2022-11-02 19:52:49,416 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a819c3b2-1e20-4e4a-9190-ed8be6a5a066/bin/uautomizer-Dbtcem3rbc/data/dea07e35b/463d74ec55894a82ad56107c8817bc0e [2022-11-02 19:52:49,419 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-02 19:52:49,421 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-02 19:52:49,429 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-02 19:52:49,430 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-02 19:52:49,434 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-02 19:52:49,435 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 07:52:49" (1/1) ... [2022-11-02 19:52:49,437 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@d730161 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 07:52:49, skipping insertion in model container [2022-11-02 19:52:49,437 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 07:52:49" (1/1) ... [2022-11-02 19:52:49,446 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-02 19:52:49,481 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-02 19:52:49,847 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a819c3b2-1e20-4e4a-9190-ed8be6a5a066/sv-benchmarks/c/weaver/chl-poker-hand-symm.wvr.c[12821,12834] [2022-11-02 19:52:49,873 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-02 19:52:49,883 INFO L203 MainTranslator]: Completed pre-run [2022-11-02 19:52:49,981 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a819c3b2-1e20-4e4a-9190-ed8be6a5a066/sv-benchmarks/c/weaver/chl-poker-hand-symm.wvr.c[12821,12834] [2022-11-02 19:52:49,986 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-02 19:52:50,003 INFO L208 MainTranslator]: Completed translation [2022-11-02 19:52:50,004 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 07:52:50 WrapperNode [2022-11-02 19:52:50,004 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-02 19:52:50,005 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-02 19:52:50,006 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-02 19:52:50,006 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-02 19:52:50,016 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 07:52:50" (1/1) ... [2022-11-02 19:52:50,040 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 07:52:50" (1/1) ... [2022-11-02 19:52:50,160 INFO L138 Inliner]: procedures = 25, calls = 307, calls flagged for inlining = 69, calls inlined = 97, statements flattened = 1570 [2022-11-02 19:52:50,160 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-02 19:52:50,167 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-02 19:52:50,168 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-02 19:52:50,168 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-02 19:52:50,181 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 07:52:50" (1/1) ... [2022-11-02 19:52:50,182 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 07:52:50" (1/1) ... [2022-11-02 19:52:50,196 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 07:52:50" (1/1) ... [2022-11-02 19:52:50,196 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 07:52:50" (1/1) ... [2022-11-02 19:52:50,249 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 07:52:50" (1/1) ... [2022-11-02 19:52:50,268 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 07:52:50" (1/1) ... [2022-11-02 19:52:50,273 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 07:52:50" (1/1) ... [2022-11-02 19:52:50,280 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 07:52:50" (1/1) ... [2022-11-02 19:52:50,291 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-02 19:52:50,292 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-02 19:52:50,292 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-02 19:52:50,292 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-02 19:52:50,293 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 07:52:50" (1/1) ... [2022-11-02 19:52:50,302 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-02 19:52:50,317 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a819c3b2-1e20-4e4a-9190-ed8be6a5a066/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 19:52:50,332 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a819c3b2-1e20-4e4a-9190-ed8be6a5a066/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-02 19:52:50,366 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a819c3b2-1e20-4e4a-9190-ed8be6a5a066/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-02 19:52:50,387 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-02 19:52:50,388 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-02 19:52:50,388 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-02 19:52:50,388 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-02 19:52:50,388 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-11-02 19:52:50,388 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-11-02 19:52:50,389 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-11-02 19:52:50,389 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-11-02 19:52:50,389 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-02 19:52:50,389 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-11-02 19:52:50,389 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-11-02 19:52:50,389 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-02 19:52:50,390 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-02 19:52:50,390 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-02 19:52:50,390 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-02 19:52:50,394 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-02 19:52:50,713 INFO L235 CfgBuilder]: Building ICFG [2022-11-02 19:52:50,715 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-02 19:52:52,995 INFO L276 CfgBuilder]: Performing block encoding [2022-11-02 19:52:55,450 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-02 19:52:55,451 INFO L300 CfgBuilder]: Removed 12 assume(true) statements. [2022-11-02 19:52:55,457 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 07:52:55 BoogieIcfgContainer [2022-11-02 19:52:55,457 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-02 19:52:55,459 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-02 19:52:55,460 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-02 19:52:55,464 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-02 19:52:55,464 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.11 07:52:49" (1/3) ... [2022-11-02 19:52:55,465 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@59a8650c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 07:52:55, skipping insertion in model container [2022-11-02 19:52:55,465 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 07:52:50" (2/3) ... [2022-11-02 19:52:55,466 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@59a8650c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 07:52:55, skipping insertion in model container [2022-11-02 19:52:55,466 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 07:52:55" (3/3) ... [2022-11-02 19:52:55,469 INFO L112 eAbstractionObserver]: Analyzing ICFG chl-poker-hand-symm.wvr.c [2022-11-02 19:52:55,484 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-02 19:52:55,497 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-02 19:52:55,497 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-02 19:52:55,497 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-02 19:52:55,863 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-11-02 19:52:55,914 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 446 places, 496 transitions, 1008 flow [2022-11-02 19:52:56,203 INFO L130 PetriNetUnfolder]: 57/494 cut-off events. [2022-11-02 19:52:56,204 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-11-02 19:52:56,210 INFO L83 FinitePrefix]: Finished finitePrefix Result has 503 conditions, 494 events. 57/494 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 513 event pairs, 0 based on Foata normal form. 0/436 useless extension candidates. Maximal degree in co-relation 402. Up to 7 conditions per place. [2022-11-02 19:52:56,211 INFO L82 GeneralOperation]: Start removeDead. Operand has 446 places, 496 transitions, 1008 flow [2022-11-02 19:52:56,221 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 435 places, 485 transitions, 982 flow [2022-11-02 19:52:56,233 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-02 19:52:56,241 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;@55e84ee6, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-02 19:52:56,242 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2022-11-02 19:52:56,385 INFO L130 PetriNetUnfolder]: 57/484 cut-off events. [2022-11-02 19:52:56,385 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-11-02 19:52:56,386 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 19:52:56,387 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 19:52:56,388 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-02 19:52:56,393 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 19:52:56,394 INFO L85 PathProgramCache]: Analyzing trace with hash -1728911239, now seen corresponding path program 1 times [2022-11-02 19:52:56,406 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 19:52:56,406 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [417658843] [2022-11-02 19:52:56,407 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 19:52:56,410 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 19:52:56,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:52:57,031 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 19:52:57,032 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 19:52:57,032 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [417658843] [2022-11-02 19:52:57,034 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [417658843] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 19:52:57,034 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 19:52:57,035 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-02 19:52:57,037 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1340304620] [2022-11-02 19:52:57,038 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 19:52:57,050 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-02 19:52:57,050 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 19:52:57,084 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-02 19:52:57,086 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-02 19:52:57,090 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 440 out of 496 [2022-11-02 19:52:57,095 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 435 places, 485 transitions, 982 flow. Second operand has 2 states, 2 states have (on average 446.5) internal successors, (893), 2 states have internal predecessors, (893), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 19:52:57,096 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 19:52:57,096 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 440 of 496 [2022-11-02 19:52:57,097 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 19:52:57,592 INFO L130 PetriNetUnfolder]: 107/617 cut-off events. [2022-11-02 19:52:57,593 INFO L131 PetriNetUnfolder]: For 20/20 co-relation queries the response was YES. [2022-11-02 19:52:57,598 INFO L83 FinitePrefix]: Finished finitePrefix Result has 756 conditions, 617 events. 107/617 cut-off events. For 20/20 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 1214 event pairs, 15 based on Foata normal form. 45/581 useless extension candidates. Maximal degree in co-relation 388. Up to 121 conditions per place. [2022-11-02 19:52:57,603 INFO L137 encePairwiseOnDemand]: 467/496 looper letters, 26 selfloop transitions, 0 changer transitions 17/456 dead transitions. [2022-11-02 19:52:57,603 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 436 places, 456 transitions, 976 flow [2022-11-02 19:52:57,605 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-02 19:52:57,608 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2022-11-02 19:52:57,625 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 935 transitions. [2022-11-02 19:52:57,634 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.9425403225806451 [2022-11-02 19:52:57,635 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 935 transitions. [2022-11-02 19:52:57,635 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 935 transitions. [2022-11-02 19:52:57,641 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 19:52:57,644 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 935 transitions. [2022-11-02 19:52:57,652 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 467.5) internal successors, (935), 2 states have internal predecessors, (935), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 19:52:57,668 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 496.0) internal successors, (1488), 3 states have internal predecessors, (1488), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 19:52:57,671 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 496.0) internal successors, (1488), 3 states have internal predecessors, (1488), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 19:52:57,673 INFO L175 Difference]: Start difference. First operand has 435 places, 485 transitions, 982 flow. Second operand 2 states and 935 transitions. [2022-11-02 19:52:57,676 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 436 places, 456 transitions, 976 flow [2022-11-02 19:52:57,685 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 432 places, 456 transitions, 968 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-11-02 19:52:57,695 INFO L231 Difference]: Finished difference. Result has 432 places, 439 transitions, 882 flow [2022-11-02 19:52:57,698 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=496, PETRI_DIFFERENCE_MINUEND_FLOW=916, PETRI_DIFFERENCE_MINUEND_PLACES=431, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=456, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=456, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=882, PETRI_PLACES=432, PETRI_TRANSITIONS=439} [2022-11-02 19:52:57,707 INFO L287 CegarLoopForPetriNet]: 435 programPoint places, -3 predicate places. [2022-11-02 19:52:57,708 INFO L495 AbstractCegarLoop]: Abstraction has has 432 places, 439 transitions, 882 flow [2022-11-02 19:52:57,709 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 446.5) internal successors, (893), 2 states have internal predecessors, (893), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 19:52:57,709 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 19:52:57,709 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 19:52:57,710 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-02 19:52:57,710 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-02 19:52:57,711 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 19:52:57,712 INFO L85 PathProgramCache]: Analyzing trace with hash -315032812, now seen corresponding path program 1 times [2022-11-02 19:52:57,712 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 19:52:57,712 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1690364561] [2022-11-02 19:52:57,712 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 19:52:57,713 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 19:52:57,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:52:58,647 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 19:52:58,647 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 19:52:58,647 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1690364561] [2022-11-02 19:52:58,648 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1690364561] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 19:52:58,648 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 19:52:58,648 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-02 19:52:58,649 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1360246617] [2022-11-02 19:52:58,649 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 19:52:58,651 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-02 19:52:58,651 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 19:52:58,652 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-02 19:52:58,652 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-02 19:52:58,656 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 344 out of 496 [2022-11-02 19:52:58,660 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 432 places, 439 transitions, 882 flow. Second operand has 5 states, 5 states have (on average 358.0) internal successors, (1790), 5 states have internal predecessors, (1790), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 19:52:58,661 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 19:52:58,661 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 344 of 496 [2022-11-02 19:52:58,661 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 19:52:59,500 INFO L130 PetriNetUnfolder]: 107/624 cut-off events. [2022-11-02 19:52:59,500 INFO L131 PetriNetUnfolder]: For 5/5 co-relation queries the response was YES. [2022-11-02 19:52:59,502 INFO L83 FinitePrefix]: Finished finitePrefix Result has 864 conditions, 624 events. 107/624 cut-off events. For 5/5 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 1205 event pairs, 15 based on Foata normal form. 0/560 useless extension candidates. Maximal degree in co-relation 861. Up to 168 conditions per place. [2022-11-02 19:52:59,510 INFO L137 encePairwiseOnDemand]: 474/496 looper letters, 120 selfloop transitions, 18 changer transitions 0/455 dead transitions. [2022-11-02 19:52:59,510 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 420 places, 455 transitions, 1190 flow [2022-11-02 19:52:59,511 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-02 19:52:59,511 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-11-02 19:52:59,518 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 2206 transitions. [2022-11-02 19:52:59,520 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.741263440860215 [2022-11-02 19:52:59,521 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 2206 transitions. [2022-11-02 19:52:59,521 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 2206 transitions. [2022-11-02 19:52:59,524 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 19:52:59,524 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 2206 transitions. [2022-11-02 19:52:59,532 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 367.6666666666667) internal successors, (2206), 6 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 19:52:59,541 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 496.0) internal successors, (3472), 7 states have internal predecessors, (3472), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 19:52:59,544 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 496.0) internal successors, (3472), 7 states have internal predecessors, (3472), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 19:52:59,544 INFO L175 Difference]: Start difference. First operand has 432 places, 439 transitions, 882 flow. Second operand 6 states and 2206 transitions. [2022-11-02 19:52:59,544 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 420 places, 455 transitions, 1190 flow [2022-11-02 19:52:59,550 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 420 places, 455 transitions, 1190 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-02 19:52:59,559 INFO L231 Difference]: Finished difference. Result has 421 places, 443 transitions, 950 flow [2022-11-02 19:52:59,560 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=496, PETRI_DIFFERENCE_MINUEND_FLOW=882, PETRI_DIFFERENCE_MINUEND_PLACES=415, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=439, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=421, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=950, PETRI_PLACES=421, PETRI_TRANSITIONS=443} [2022-11-02 19:52:59,561 INFO L287 CegarLoopForPetriNet]: 435 programPoint places, -14 predicate places. [2022-11-02 19:52:59,562 INFO L495 AbstractCegarLoop]: Abstraction has has 421 places, 443 transitions, 950 flow [2022-11-02 19:52:59,563 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 358.0) internal successors, (1790), 5 states have internal predecessors, (1790), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 19:52:59,564 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 19:52:59,565 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 19:52:59,565 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-02 19:52:59,566 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-02 19:52:59,567 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 19:52:59,567 INFO L85 PathProgramCache]: Analyzing trace with hash 1049670072, now seen corresponding path program 1 times [2022-11-02 19:52:59,568 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 19:52:59,568 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [704020796] [2022-11-02 19:52:59,568 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 19:52:59,568 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 19:52:59,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:53:00,317 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-02 19:53:00,319 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 19:53:00,319 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [704020796] [2022-11-02 19:53:00,320 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [704020796] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 19:53:00,321 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [704581031] [2022-11-02 19:53:00,322 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 19:53:00,322 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 19:53:00,322 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a819c3b2-1e20-4e4a-9190-ed8be6a5a066/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 19:53:00,325 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a819c3b2-1e20-4e4a-9190-ed8be6a5a066/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 19:53:00,346 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a819c3b2-1e20-4e4a-9190-ed8be6a5a066/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-02 19:53:01,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:53:01,032 INFO L263 TraceCheckSpWp]: Trace formula consists of 745 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-02 19:53:01,045 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 19:53:01,224 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-02 19:53:01,225 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 19:53:01,225 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [704581031] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 19:53:01,225 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-02 19:53:01,226 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 10 [2022-11-02 19:53:01,226 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1258376999] [2022-11-02 19:53:01,226 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 19:53:01,229 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-02 19:53:01,230 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 19:53:01,231 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-02 19:53:01,231 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2022-11-02 19:53:01,235 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 344 out of 496 [2022-11-02 19:53:01,238 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 421 places, 443 transitions, 950 flow. Second operand has 5 states, 5 states have (on average 361.2) internal successors, (1806), 5 states have internal predecessors, (1806), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 19:53:01,238 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 19:53:01,240 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 344 of 496 [2022-11-02 19:53:01,241 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 19:53:01,923 INFO L130 PetriNetUnfolder]: 107/648 cut-off events. [2022-11-02 19:53:01,923 INFO L131 PetriNetUnfolder]: For 27/27 co-relation queries the response was YES. [2022-11-02 19:53:01,925 INFO L83 FinitePrefix]: Finished finitePrefix Result has 936 conditions, 648 events. 107/648 cut-off events. For 27/27 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 1197 event pairs, 15 based on Foata normal form. 0/588 useless extension candidates. Maximal degree in co-relation 931. Up to 162 conditions per place. [2022-11-02 19:53:01,929 INFO L137 encePairwiseOnDemand]: 474/496 looper letters, 124 selfloop transitions, 18 changer transitions 0/459 dead transitions. [2022-11-02 19:53:01,929 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 426 places, 459 transitions, 1266 flow [2022-11-02 19:53:01,930 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-02 19:53:01,930 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-11-02 19:53:01,935 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 2206 transitions. [2022-11-02 19:53:01,936 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.741263440860215 [2022-11-02 19:53:01,937 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 2206 transitions. [2022-11-02 19:53:01,937 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 2206 transitions. [2022-11-02 19:53:01,939 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 19:53:01,939 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 2206 transitions. [2022-11-02 19:53:01,946 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 367.6666666666667) internal successors, (2206), 6 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 19:53:01,954 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 496.0) internal successors, (3472), 7 states have internal predecessors, (3472), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 19:53:01,957 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 496.0) internal successors, (3472), 7 states have internal predecessors, (3472), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 19:53:01,957 INFO L175 Difference]: Start difference. First operand has 421 places, 443 transitions, 950 flow. Second operand 6 states and 2206 transitions. [2022-11-02 19:53:01,957 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 426 places, 459 transitions, 1266 flow [2022-11-02 19:53:01,963 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 422 places, 459 transitions, 1238 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-11-02 19:53:01,973 INFO L231 Difference]: Finished difference. Result has 423 places, 447 transitions, 990 flow [2022-11-02 19:53:01,974 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=496, PETRI_DIFFERENCE_MINUEND_FLOW=922, PETRI_DIFFERENCE_MINUEND_PLACES=417, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=443, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=425, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=990, PETRI_PLACES=423, PETRI_TRANSITIONS=447} [2022-11-02 19:53:01,978 INFO L287 CegarLoopForPetriNet]: 435 programPoint places, -12 predicate places. [2022-11-02 19:53:01,979 INFO L495 AbstractCegarLoop]: Abstraction has has 423 places, 447 transitions, 990 flow [2022-11-02 19:53:01,980 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 361.2) internal successors, (1806), 5 states have internal predecessors, (1806), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 19:53:01,981 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 19:53:01,981 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 19:53:02,034 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a819c3b2-1e20-4e4a-9190-ed8be6a5a066/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-02 19:53:02,194 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a819c3b2-1e20-4e4a-9190-ed8be6a5a066/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 19:53:02,195 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-02 19:53:02,196 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 19:53:02,196 INFO L85 PathProgramCache]: Analyzing trace with hash -1302527570, now seen corresponding path program 1 times [2022-11-02 19:53:02,196 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 19:53:02,197 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [794854094] [2022-11-02 19:53:02,197 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 19:53:02,197 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 19:53:02,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:53:02,859 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-11-02 19:53:02,862 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 19:53:02,863 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [794854094] [2022-11-02 19:53:02,863 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [794854094] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 19:53:02,864 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [500567743] [2022-11-02 19:53:02,864 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 19:53:02,864 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 19:53:02,865 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a819c3b2-1e20-4e4a-9190-ed8be6a5a066/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 19:53:02,866 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a819c3b2-1e20-4e4a-9190-ed8be6a5a066/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 19:53:02,897 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a819c3b2-1e20-4e4a-9190-ed8be6a5a066/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-02 19:53:03,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:53:03,540 INFO L263 TraceCheckSpWp]: Trace formula consists of 797 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-02 19:53:03,555 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 19:53:03,749 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-11-02 19:53:03,749 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 19:53:03,890 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-11-02 19:53:03,891 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [500567743] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 19:53:03,891 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-02 19:53:03,892 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 17 [2022-11-02 19:53:03,892 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [412388463] [2022-11-02 19:53:03,892 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-02 19:53:03,894 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-11-02 19:53:03,894 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 19:53:03,895 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-11-02 19:53:03,895 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=212, Unknown=0, NotChecked=0, Total=272 [2022-11-02 19:53:03,904 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 336 out of 496 [2022-11-02 19:53:03,914 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 423 places, 447 transitions, 990 flow. Second operand has 17 states, 17 states have (on average 345.52941176470586) internal successors, (5874), 17 states have internal predecessors, (5874), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 19:53:03,915 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 19:53:03,915 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 336 of 496 [2022-11-02 19:53:03,915 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 19:53:05,480 INFO L130 PetriNetUnfolder]: 107/720 cut-off events. [2022-11-02 19:53:05,480 INFO L131 PetriNetUnfolder]: For 27/27 co-relation queries the response was YES. [2022-11-02 19:53:05,482 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1097 conditions, 720 events. 107/720 cut-off events. For 27/27 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 1126 event pairs, 15 based on Foata normal form. 16/680 useless extension candidates. Maximal degree in co-relation 1091. Up to 150 conditions per place. [2022-11-02 19:53:05,486 INFO L137 encePairwiseOnDemand]: 430/496 looper letters, 128 selfloop transitions, 90 changer transitions 0/527 dead transitions. [2022-11-02 19:53:05,486 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 444 places, 527 transitions, 1602 flow [2022-11-02 19:53:05,487 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-11-02 19:53:05,487 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2022-11-02 19:53:05,503 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 7626 transitions. [2022-11-02 19:53:05,507 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.6988636363636364 [2022-11-02 19:53:05,508 INFO L72 ComplementDD]: Start complementDD. Operand 22 states and 7626 transitions. [2022-11-02 19:53:05,508 INFO L73 IsDeterministic]: Start isDeterministic. Operand 22 states and 7626 transitions. [2022-11-02 19:53:05,514 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 19:53:05,514 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 22 states and 7626 transitions. [2022-11-02 19:53:05,536 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 23 states, 22 states have (on average 346.6363636363636) internal successors, (7626), 22 states have internal predecessors, (7626), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 19:53:05,562 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 23 states, 23 states have (on average 496.0) internal successors, (11408), 23 states have internal predecessors, (11408), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 19:53:05,569 INFO L81 ComplementDD]: Finished complementDD. Result has 23 states, 23 states have (on average 496.0) internal successors, (11408), 23 states have internal predecessors, (11408), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 19:53:05,569 INFO L175 Difference]: Start difference. First operand has 423 places, 447 transitions, 990 flow. Second operand 22 states and 7626 transitions. [2022-11-02 19:53:05,570 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 444 places, 527 transitions, 1602 flow [2022-11-02 19:53:05,583 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 440 places, 527 transitions, 1574 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-11-02 19:53:05,592 INFO L231 Difference]: Finished difference. Result has 446 places, 495 transitions, 1413 flow [2022-11-02 19:53:05,593 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=496, PETRI_DIFFERENCE_MINUEND_FLOW=962, PETRI_DIFFERENCE_MINUEND_PLACES=419, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=447, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=58, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=381, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=1413, PETRI_PLACES=446, PETRI_TRANSITIONS=495} [2022-11-02 19:53:05,595 INFO L287 CegarLoopForPetriNet]: 435 programPoint places, 11 predicate places. [2022-11-02 19:53:05,596 INFO L495 AbstractCegarLoop]: Abstraction has has 446 places, 495 transitions, 1413 flow [2022-11-02 19:53:05,609 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 345.52941176470586) internal successors, (5874), 17 states have internal predecessors, (5874), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 19:53:05,619 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 19:53:05,620 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 19:53:05,653 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a819c3b2-1e20-4e4a-9190-ed8be6a5a066/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-02 19:53:05,835 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a819c3b2-1e20-4e4a-9190-ed8be6a5a066/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 19:53:05,835 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-02 19:53:05,836 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 19:53:05,836 INFO L85 PathProgramCache]: Analyzing trace with hash 1625430528, now seen corresponding path program 2 times [2022-11-02 19:53:05,837 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 19:53:05,837 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [502670125] [2022-11-02 19:53:05,837 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 19:53:05,838 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 19:53:05,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:53:06,842 INFO L134 CoverageAnalysis]: Checked inductivity of 192 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 168 trivial. 0 not checked. [2022-11-02 19:53:06,842 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 19:53:06,843 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [502670125] [2022-11-02 19:53:06,843 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [502670125] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 19:53:06,844 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1429078368] [2022-11-02 19:53:06,845 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-02 19:53:06,845 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 19:53:06,846 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a819c3b2-1e20-4e4a-9190-ed8be6a5a066/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 19:53:06,847 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a819c3b2-1e20-4e4a-9190-ed8be6a5a066/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 19:53:06,864 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a819c3b2-1e20-4e4a-9190-ed8be6a5a066/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-02 19:53:07,518 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-11-02 19:53:07,518 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-02 19:53:07,523 INFO L263 TraceCheckSpWp]: Trace formula consists of 693 conjuncts, 14 conjunts are in the unsatisfiable core [2022-11-02 19:53:07,537 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 19:53:07,678 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-02 19:53:07,679 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 35 treesize of output 23 [2022-11-02 19:53:07,764 INFO L134 CoverageAnalysis]: Checked inductivity of 192 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 192 trivial. 0 not checked. [2022-11-02 19:53:07,765 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 19:53:07,765 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1429078368] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 19:53:07,765 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-02 19:53:07,766 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [11] total 14 [2022-11-02 19:53:07,766 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [374324596] [2022-11-02 19:53:07,767 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 19:53:07,768 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-02 19:53:07,768 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 19:53:07,769 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-02 19:53:07,769 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=146, Unknown=0, NotChecked=0, Total=182 [2022-11-02 19:53:07,773 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 412 out of 496 [2022-11-02 19:53:07,778 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 446 places, 495 transitions, 1413 flow. Second operand has 5 states, 5 states have (on average 417.6) internal successors, (2088), 5 states have internal predecessors, (2088), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 19:53:07,779 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 19:53:07,780 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 412 of 496 [2022-11-02 19:53:07,780 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 19:53:08,937 INFO L130 PetriNetUnfolder]: 261/1123 cut-off events. [2022-11-02 19:53:08,938 INFO L131 PetriNetUnfolder]: For 47/47 co-relation queries the response was YES. [2022-11-02 19:53:08,941 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1752 conditions, 1123 events. 261/1123 cut-off events. For 47/47 co-relation queries the response was YES. Maximal size of possible extension queue 40. Compared 3570 event pairs, 45 based on Foata normal form. 0/1016 useless extension candidates. Maximal degree in co-relation 1740. Up to 265 conditions per place. [2022-11-02 19:53:08,946 INFO L137 encePairwiseOnDemand]: 484/496 looper letters, 103 selfloop transitions, 15 changer transitions 0/559 dead transitions. [2022-11-02 19:53:08,946 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 452 places, 559 transitions, 1785 flow [2022-11-02 19:53:08,947 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-02 19:53:08,947 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-02 19:53:08,953 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 3006 transitions. [2022-11-02 19:53:08,955 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8657834101382489 [2022-11-02 19:53:08,956 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 3006 transitions. [2022-11-02 19:53:08,956 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 3006 transitions. [2022-11-02 19:53:08,958 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 19:53:08,958 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 3006 transitions. [2022-11-02 19:53:08,966 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 429.42857142857144) internal successors, (3006), 7 states have internal predecessors, (3006), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 19:53:08,973 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 496.0) internal successors, (3968), 8 states have internal predecessors, (3968), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 19:53:08,975 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 496.0) internal successors, (3968), 8 states have internal predecessors, (3968), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 19:53:08,976 INFO L175 Difference]: Start difference. First operand has 446 places, 495 transitions, 1413 flow. Second operand 7 states and 3006 transitions. [2022-11-02 19:53:08,976 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 452 places, 559 transitions, 1785 flow [2022-11-02 19:53:08,985 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 445 places, 559 transitions, 1716 flow, removed 16 selfloop flow, removed 7 redundant places. [2022-11-02 19:53:08,996 INFO L231 Difference]: Finished difference. Result has 448 places, 508 transitions, 1443 flow [2022-11-02 19:53:08,997 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=496, PETRI_DIFFERENCE_MINUEND_FLOW=1344, PETRI_DIFFERENCE_MINUEND_PLACES=439, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=495, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=485, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1443, PETRI_PLACES=448, PETRI_TRANSITIONS=508} [2022-11-02 19:53:08,998 INFO L287 CegarLoopForPetriNet]: 435 programPoint places, 13 predicate places. [2022-11-02 19:53:08,998 INFO L495 AbstractCegarLoop]: Abstraction has has 448 places, 508 transitions, 1443 flow [2022-11-02 19:53:08,999 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 417.6) internal successors, (2088), 5 states have internal predecessors, (2088), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 19:53:09,000 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 19:53:09,000 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 19:53:09,048 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a819c3b2-1e20-4e4a-9190-ed8be6a5a066/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-02 19:53:09,210 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a819c3b2-1e20-4e4a-9190-ed8be6a5a066/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 19:53:09,211 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-02 19:53:09,212 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 19:53:09,212 INFO L85 PathProgramCache]: Analyzing trace with hash -1725345500, now seen corresponding path program 3 times [2022-11-02 19:53:09,212 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 19:53:09,212 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1026058037] [2022-11-02 19:53:09,213 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 19:53:09,213 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 19:53:09,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:53:10,069 INFO L134 CoverageAnalysis]: Checked inductivity of 192 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 168 trivial. 0 not checked. [2022-11-02 19:53:10,069 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 19:53:10,070 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1026058037] [2022-11-02 19:53:10,070 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1026058037] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 19:53:10,070 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [588663491] [2022-11-02 19:53:10,071 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-02 19:53:10,071 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 19:53:10,071 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a819c3b2-1e20-4e4a-9190-ed8be6a5a066/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 19:53:10,072 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a819c3b2-1e20-4e4a-9190-ed8be6a5a066/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 19:53:10,090 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a819c3b2-1e20-4e4a-9190-ed8be6a5a066/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-02 19:53:10,724 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2022-11-02 19:53:10,724 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-02 19:53:10,730 INFO L263 TraceCheckSpWp]: Trace formula consists of 693 conjuncts, 26 conjunts are in the unsatisfiable core [2022-11-02 19:53:10,740 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 19:53:13,168 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 19:53:13,172 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 19:53:13,179 INFO L356 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-11-02 19:53:13,180 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 24 treesize of output 29 [2022-11-02 19:53:13,278 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-02 19:53:13,279 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 35 treesize of output 23 [2022-11-02 19:53:13,356 INFO L134 CoverageAnalysis]: Checked inductivity of 192 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 192 trivial. 0 not checked. [2022-11-02 19:53:13,356 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 19:53:13,357 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [588663491] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 19:53:13,357 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-02 19:53:13,357 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [11] total 26 [2022-11-02 19:53:13,358 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1243626369] [2022-11-02 19:53:13,358 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 19:53:13,359 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-11-02 19:53:13,359 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 19:53:13,361 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-11-02 19:53:13,361 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=583, Unknown=0, NotChecked=0, Total=650 [2022-11-02 19:53:13,371 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 348 out of 496 [2022-11-02 19:53:13,377 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 448 places, 508 transitions, 1443 flow. Second operand has 17 states, 17 states have (on average 353.29411764705884) internal successors, (6006), 17 states have internal predecessors, (6006), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 19:53:13,378 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 19:53:13,378 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 348 of 496 [2022-11-02 19:53:13,378 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 19:53:16,412 INFO L130 PetriNetUnfolder]: 308/1377 cut-off events. [2022-11-02 19:53:16,413 INFO L131 PetriNetUnfolder]: For 237/261 co-relation queries the response was YES. [2022-11-02 19:53:16,418 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2309 conditions, 1377 events. 308/1377 cut-off events. For 237/261 co-relation queries the response was YES. Maximal size of possible extension queue 54. Compared 5704 event pairs, 59 based on Foata normal form. 2/1271 useless extension candidates. Maximal degree in co-relation 2294. Up to 265 conditions per place. [2022-11-02 19:53:16,424 INFO L137 encePairwiseOnDemand]: 431/496 looper letters, 134 selfloop transitions, 76 changer transitions 0/589 dead transitions. [2022-11-02 19:53:16,425 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 474 places, 589 transitions, 2103 flow [2022-11-02 19:53:16,425 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2022-11-02 19:53:16,425 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2022-11-02 19:53:16,443 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 9598 transitions. [2022-11-02 19:53:16,448 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.7166965352449224 [2022-11-02 19:53:16,449 INFO L72 ComplementDD]: Start complementDD. Operand 27 states and 9598 transitions. [2022-11-02 19:53:16,449 INFO L73 IsDeterministic]: Start isDeterministic. Operand 27 states and 9598 transitions. [2022-11-02 19:53:16,455 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 19:53:16,456 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 27 states and 9598 transitions. [2022-11-02 19:53:16,479 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 28 states, 27 states have (on average 355.48148148148147) internal successors, (9598), 27 states have internal predecessors, (9598), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 19:53:16,506 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 28 states, 28 states have (on average 496.0) internal successors, (13888), 28 states have internal predecessors, (13888), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 19:53:16,513 INFO L81 ComplementDD]: Finished complementDD. Result has 28 states, 28 states have (on average 496.0) internal successors, (13888), 28 states have internal predecessors, (13888), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 19:53:16,513 INFO L175 Difference]: Start difference. First operand has 448 places, 508 transitions, 1443 flow. Second operand 27 states and 9598 transitions. [2022-11-02 19:53:16,514 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 474 places, 589 transitions, 2103 flow [2022-11-02 19:53:16,521 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 474 places, 589 transitions, 2103 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-02 19:53:16,533 INFO L231 Difference]: Finished difference. Result has 479 places, 518 transitions, 1693 flow [2022-11-02 19:53:16,534 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=496, PETRI_DIFFERENCE_MINUEND_FLOW=1443, PETRI_DIFFERENCE_MINUEND_PLACES=448, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=508, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=67, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=435, PETRI_DIFFERENCE_SUBTRAHEND_STATES=27, PETRI_FLOW=1693, PETRI_PLACES=479, PETRI_TRANSITIONS=518} [2022-11-02 19:53:16,538 INFO L287 CegarLoopForPetriNet]: 435 programPoint places, 44 predicate places. [2022-11-02 19:53:16,538 INFO L495 AbstractCegarLoop]: Abstraction has has 479 places, 518 transitions, 1693 flow [2022-11-02 19:53:16,541 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 353.29411764705884) internal successors, (6006), 17 states have internal predecessors, (6006), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 19:53:16,541 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 19:53:16,542 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 19:53:16,593 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a819c3b2-1e20-4e4a-9190-ed8be6a5a066/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-02 19:53:16,758 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a819c3b2-1e20-4e4a-9190-ed8be6a5a066/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 19:53:16,759 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-02 19:53:16,760 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 19:53:16,760 INFO L85 PathProgramCache]: Analyzing trace with hash -2049905428, now seen corresponding path program 1 times [2022-11-02 19:53:16,760 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 19:53:16,760 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2133204044] [2022-11-02 19:53:16,761 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 19:53:16,761 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 19:53:16,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:53:17,716 INFO L134 CoverageAnalysis]: Checked inductivity of 192 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 192 trivial. 0 not checked. [2022-11-02 19:53:17,716 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 19:53:17,717 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2133204044] [2022-11-02 19:53:17,717 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2133204044] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 19:53:17,717 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 19:53:17,717 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-02 19:53:17,718 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1705769461] [2022-11-02 19:53:17,718 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 19:53:17,719 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-02 19:53:17,719 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 19:53:17,720 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-02 19:53:17,724 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-02 19:53:17,727 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 434 out of 496 [2022-11-02 19:53:17,730 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 479 places, 518 transitions, 1693 flow. Second operand has 4 states, 4 states have (on average 436.5) internal successors, (1746), 4 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) [2022-11-02 19:53:17,730 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 19:53:17,730 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 434 of 496 [2022-11-02 19:53:17,730 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 19:53:18,682 INFO L130 PetriNetUnfolder]: 213/1388 cut-off events. [2022-11-02 19:53:18,683 INFO L131 PetriNetUnfolder]: For 591/623 co-relation queries the response was YES. [2022-11-02 19:53:18,687 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2251 conditions, 1388 events. 213/1388 cut-off events. For 591/623 co-relation queries the response was YES. Maximal size of possible extension queue 55. Compared 6427 event pairs, 27 based on Foata normal form. 14/1320 useless extension candidates. Maximal degree in co-relation 2230. Up to 191 conditions per place. [2022-11-02 19:53:18,692 INFO L137 encePairwiseOnDemand]: 485/496 looper letters, 61 selfloop transitions, 11 changer transitions 0/540 dead transitions. [2022-11-02 19:53:18,692 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 482 places, 540 transitions, 1924 flow [2022-11-02 19:53:18,693 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-02 19:53:18,693 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-11-02 19:53:18,696 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1789 transitions. [2022-11-02 19:53:18,697 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.9017137096774194 [2022-11-02 19:53:18,697 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1789 transitions. [2022-11-02 19:53:18,698 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1789 transitions. [2022-11-02 19:53:18,699 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 19:53:18,699 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1789 transitions. [2022-11-02 19:53:18,703 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 447.25) internal successors, (1789), 4 states have internal predecessors, (1789), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 19:53:18,707 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 496.0) internal successors, (2480), 5 states have internal predecessors, (2480), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 19:53:18,709 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 496.0) internal successors, (2480), 5 states have internal predecessors, (2480), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 19:53:18,709 INFO L175 Difference]: Start difference. First operand has 479 places, 518 transitions, 1693 flow. Second operand 4 states and 1789 transitions. [2022-11-02 19:53:18,709 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 482 places, 540 transitions, 1924 flow [2022-11-02 19:53:18,718 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 463 places, 540 transitions, 1827 flow, removed 2 selfloop flow, removed 19 redundant places. [2022-11-02 19:53:18,726 INFO L231 Difference]: Finished difference. Result has 464 places, 521 transitions, 1656 flow [2022-11-02 19:53:18,728 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=496, PETRI_DIFFERENCE_MINUEND_FLOW=1596, PETRI_DIFFERENCE_MINUEND_PLACES=460, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=518, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=507, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=1656, PETRI_PLACES=464, PETRI_TRANSITIONS=521} [2022-11-02 19:53:18,728 INFO L287 CegarLoopForPetriNet]: 435 programPoint places, 29 predicate places. [2022-11-02 19:53:18,729 INFO L495 AbstractCegarLoop]: Abstraction has has 464 places, 521 transitions, 1656 flow [2022-11-02 19:53:18,729 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 436.5) internal successors, (1746), 4 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) [2022-11-02 19:53:18,730 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 19:53:18,730 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 19:53:18,731 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-02 19:53:18,731 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-02 19:53:18,731 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 19:53:18,732 INFO L85 PathProgramCache]: Analyzing trace with hash 1313277827, now seen corresponding path program 1 times [2022-11-02 19:53:18,732 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 19:53:18,734 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1134970167] [2022-11-02 19:53:18,734 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 19:53:18,736 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 19:53:18,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:53:19,501 INFO L134 CoverageAnalysis]: Checked inductivity of 192 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 192 trivial. 0 not checked. [2022-11-02 19:53:19,501 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 19:53:19,505 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1134970167] [2022-11-02 19:53:19,505 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1134970167] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 19:53:19,506 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 19:53:19,506 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-02 19:53:19,506 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [214146843] [2022-11-02 19:53:19,507 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 19:53:19,508 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-02 19:53:19,508 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 19:53:19,509 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-02 19:53:19,509 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-02 19:53:19,511 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 434 out of 496 [2022-11-02 19:53:19,514 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 464 places, 521 transitions, 1656 flow. Second operand has 4 states, 4 states have (on average 436.5) internal successors, (1746), 4 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) [2022-11-02 19:53:19,514 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 19:53:19,514 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 434 of 496 [2022-11-02 19:53:19,514 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 19:53:20,774 INFO L130 PetriNetUnfolder]: 310/2195 cut-off events. [2022-11-02 19:53:20,775 INFO L131 PetriNetUnfolder]: For 1154/1166 co-relation queries the response was YES. [2022-11-02 19:53:20,785 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3600 conditions, 2195 events. 310/2195 cut-off events. For 1154/1166 co-relation queries the response was YES. Maximal size of possible extension queue 90. Compared 14912 event pairs, 73 based on Foata normal form. 13/2060 useless extension candidates. Maximal degree in co-relation 3578. Up to 310 conditions per place. [2022-11-02 19:53:20,794 INFO L137 encePairwiseOnDemand]: 485/496 looper letters, 64 selfloop transitions, 14 changer transitions 0/549 dead transitions. [2022-11-02 19:53:20,794 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 467 places, 549 transitions, 1954 flow [2022-11-02 19:53:20,795 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-02 19:53:20,795 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-11-02 19:53:20,798 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1790 transitions. [2022-11-02 19:53:20,800 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.9022177419354839 [2022-11-02 19:53:20,800 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1790 transitions. [2022-11-02 19:53:20,800 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1790 transitions. [2022-11-02 19:53:20,802 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 19:53:20,802 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1790 transitions. [2022-11-02 19:53:20,806 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 447.5) internal successors, (1790), 4 states have internal predecessors, (1790), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 19:53:20,811 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 496.0) internal successors, (2480), 5 states have internal predecessors, (2480), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 19:53:20,812 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 496.0) internal successors, (2480), 5 states have internal predecessors, (2480), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 19:53:20,812 INFO L175 Difference]: Start difference. First operand has 464 places, 521 transitions, 1656 flow. Second operand 4 states and 1790 transitions. [2022-11-02 19:53:20,813 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 467 places, 549 transitions, 1954 flow [2022-11-02 19:53:20,828 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 465 places, 549 transitions, 1933 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-02 19:53:20,837 INFO L231 Difference]: Finished difference. Result has 466 places, 524 transitions, 1705 flow [2022-11-02 19:53:20,838 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=496, PETRI_DIFFERENCE_MINUEND_FLOW=1644, PETRI_DIFFERENCE_MINUEND_PLACES=462, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=521, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=507, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=1705, PETRI_PLACES=466, PETRI_TRANSITIONS=524} [2022-11-02 19:53:20,839 INFO L287 CegarLoopForPetriNet]: 435 programPoint places, 31 predicate places. [2022-11-02 19:53:20,840 INFO L495 AbstractCegarLoop]: Abstraction has has 466 places, 524 transitions, 1705 flow [2022-11-02 19:53:20,840 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 436.5) internal successors, (1746), 4 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) [2022-11-02 19:53:20,841 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 19:53:20,841 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 19:53:20,842 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-02 19:53:20,842 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-02 19:53:20,843 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 19:53:20,843 INFO L85 PathProgramCache]: Analyzing trace with hash 240170723, now seen corresponding path program 1 times [2022-11-02 19:53:20,844 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 19:53:20,844 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1804710459] [2022-11-02 19:53:20,844 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 19:53:20,844 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 19:53:20,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:53:21,748 INFO L134 CoverageAnalysis]: Checked inductivity of 192 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 168 trivial. 0 not checked. [2022-11-02 19:53:21,748 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 19:53:21,749 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1804710459] [2022-11-02 19:53:21,749 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1804710459] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 19:53:21,749 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [142187679] [2022-11-02 19:53:21,749 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 19:53:21,750 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 19:53:21,750 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a819c3b2-1e20-4e4a-9190-ed8be6a5a066/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 19:53:21,755 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a819c3b2-1e20-4e4a-9190-ed8be6a5a066/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 19:53:21,763 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a819c3b2-1e20-4e4a-9190-ed8be6a5a066/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-02 19:53:22,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:53:22,481 INFO L263 TraceCheckSpWp]: Trace formula consists of 1008 conjuncts, 10 conjunts are in the unsatisfiable core [2022-11-02 19:53:22,489 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 19:53:22,749 INFO L134 CoverageAnalysis]: Checked inductivity of 192 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 168 trivial. 0 not checked. [2022-11-02 19:53:22,750 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 19:53:22,947 INFO L134 CoverageAnalysis]: Checked inductivity of 192 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 168 trivial. 0 not checked. [2022-11-02 19:53:22,947 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [142187679] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 19:53:22,947 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-02 19:53:22,948 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 22 [2022-11-02 19:53:22,948 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [944840201] [2022-11-02 19:53:22,948 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-02 19:53:22,950 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-11-02 19:53:22,950 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 19:53:22,950 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-11-02 19:53:22,951 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=114, Invalid=348, Unknown=0, NotChecked=0, Total=462 [2022-11-02 19:53:22,961 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 336 out of 496 [2022-11-02 19:53:22,970 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 466 places, 524 transitions, 1705 flow. Second operand has 22 states, 22 states have (on average 342.8181818181818) internal successors, (7542), 22 states have internal predecessors, (7542), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 19:53:22,970 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 19:53:22,970 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 336 of 496 [2022-11-02 19:53:22,970 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 19:53:25,789 INFO L130 PetriNetUnfolder]: 310/2192 cut-off events. [2022-11-02 19:53:25,789 INFO L131 PetriNetUnfolder]: For 1342/1382 co-relation queries the response was YES. [2022-11-02 19:53:25,801 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3965 conditions, 2192 events. 310/2192 cut-off events. For 1342/1382 co-relation queries the response was YES. Maximal size of possible extension queue 89. Compared 13822 event pairs, 110 based on Foata normal form. 12/2090 useless extension candidates. Maximal degree in co-relation 3942. Up to 476 conditions per place. [2022-11-02 19:53:25,811 INFO L137 encePairwiseOnDemand]: 430/496 looper letters, 168 selfloop transitions, 126 changer transitions 0/616 dead transitions. [2022-11-02 19:53:25,812 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 496 places, 616 transitions, 2653 flow [2022-11-02 19:53:25,812 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2022-11-02 19:53:25,812 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2022-11-02 19:53:25,840 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 10706 transitions. [2022-11-02 19:53:25,846 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.6962799167533819 [2022-11-02 19:53:25,846 INFO L72 ComplementDD]: Start complementDD. Operand 31 states and 10706 transitions. [2022-11-02 19:53:25,847 INFO L73 IsDeterministic]: Start isDeterministic. Operand 31 states and 10706 transitions. [2022-11-02 19:53:25,853 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 19:53:25,853 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 31 states and 10706 transitions. [2022-11-02 19:53:25,877 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 32 states, 31 states have (on average 345.35483870967744) internal successors, (10706), 31 states have internal predecessors, (10706), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 19:53:25,909 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 32 states, 32 states have (on average 496.0) internal successors, (15872), 32 states have internal predecessors, (15872), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 19:53:25,917 INFO L81 ComplementDD]: Finished complementDD. Result has 32 states, 32 states have (on average 496.0) internal successors, (15872), 32 states have internal predecessors, (15872), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 19:53:25,917 INFO L175 Difference]: Start difference. First operand has 466 places, 524 transitions, 1705 flow. Second operand 31 states and 10706 transitions. [2022-11-02 19:53:25,918 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 496 places, 616 transitions, 2653 flow [2022-11-02 19:53:25,933 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 494 places, 616 transitions, 2638 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-02 19:53:25,943 INFO L231 Difference]: Finished difference. Result has 501 places, 568 transitions, 2317 flow [2022-11-02 19:53:25,945 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=496, PETRI_DIFFERENCE_MINUEND_FLOW=1690, PETRI_DIFFERENCE_MINUEND_PLACES=464, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=524, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=90, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=418, PETRI_DIFFERENCE_SUBTRAHEND_STATES=31, PETRI_FLOW=2317, PETRI_PLACES=501, PETRI_TRANSITIONS=568} [2022-11-02 19:53:25,946 INFO L287 CegarLoopForPetriNet]: 435 programPoint places, 66 predicate places. [2022-11-02 19:53:25,946 INFO L495 AbstractCegarLoop]: Abstraction has has 501 places, 568 transitions, 2317 flow [2022-11-02 19:53:25,949 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 342.8181818181818) internal successors, (7542), 22 states have internal predecessors, (7542), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 19:53:25,949 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 19:53:25,950 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 19:53:26,002 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a819c3b2-1e20-4e4a-9190-ed8be6a5a066/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-11-02 19:53:26,162 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a819c3b2-1e20-4e4a-9190-ed8be6a5a066/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 19:53:26,163 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-02 19:53:26,164 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 19:53:26,164 INFO L85 PathProgramCache]: Analyzing trace with hash 1901636067, now seen corresponding path program 2 times [2022-11-02 19:53:26,164 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 19:53:26,164 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [546425430] [2022-11-02 19:53:26,165 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 19:53:26,165 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 19:53:26,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:53:27,279 INFO L134 CoverageAnalysis]: Checked inductivity of 484 backedges. 0 proven. 75 refuted. 0 times theorem prover too weak. 409 trivial. 0 not checked. [2022-11-02 19:53:27,279 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 19:53:27,280 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [546425430] [2022-11-02 19:53:27,280 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [546425430] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 19:53:27,280 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [258615492] [2022-11-02 19:53:27,280 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-02 19:53:27,280 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 19:53:27,280 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a819c3b2-1e20-4e4a-9190-ed8be6a5a066/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 19:53:27,282 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a819c3b2-1e20-4e4a-9190-ed8be6a5a066/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 19:53:27,306 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a819c3b2-1e20-4e4a-9190-ed8be6a5a066/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-02 19:53:27,888 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-11-02 19:53:27,888 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-02 19:53:27,892 INFO L263 TraceCheckSpWp]: Trace formula consists of 696 conjuncts, 11 conjunts are in the unsatisfiable core [2022-11-02 19:53:27,900 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 19:53:28,004 INFO L134 CoverageAnalysis]: Checked inductivity of 484 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 484 trivial. 0 not checked. [2022-11-02 19:53:28,005 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 19:53:28,005 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [258615492] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 19:53:28,005 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-02 19:53:28,005 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [15] total 20 [2022-11-02 19:53:28,006 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [950107902] [2022-11-02 19:53:28,006 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 19:53:28,007 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-02 19:53:28,007 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 19:53:28,007 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-02 19:53:28,008 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=314, Unknown=0, NotChecked=0, Total=380 [2022-11-02 19:53:28,010 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 345 out of 496 [2022-11-02 19:53:28,013 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 501 places, 568 transitions, 2317 flow. Second operand has 7 states, 7 states have (on average 356.57142857142856) internal successors, (2496), 7 states have internal predecessors, (2496), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 19:53:28,013 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 19:53:28,013 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 345 of 496 [2022-11-02 19:53:28,013 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 19:53:29,603 INFO L130 PetriNetUnfolder]: 309/2313 cut-off events. [2022-11-02 19:53:29,604 INFO L131 PetriNetUnfolder]: For 1463/1503 co-relation queries the response was YES. [2022-11-02 19:53:29,613 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4516 conditions, 2313 events. 309/2313 cut-off events. For 1463/1503 co-relation queries the response was YES. Maximal size of possible extension queue 89. Compared 15357 event pairs, 110 based on Foata normal form. 7/2206 useless extension candidates. Maximal degree in co-relation 4486. Up to 858 conditions per place. [2022-11-02 19:53:29,622 INFO L137 encePairwiseOnDemand]: 489/496 looper letters, 126 selfloop transitions, 2 changer transitions 10/581 dead transitions. [2022-11-02 19:53:29,622 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 507 places, 581 transitions, 2609 flow [2022-11-02 19:53:29,622 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-02 19:53:29,622 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-02 19:53:29,625 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2533 transitions. [2022-11-02 19:53:29,627 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.7295506912442397 [2022-11-02 19:53:29,627 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2533 transitions. [2022-11-02 19:53:29,627 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2533 transitions. [2022-11-02 19:53:29,629 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 19:53:29,629 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2533 transitions. [2022-11-02 19:53:29,634 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 361.85714285714283) internal successors, (2533), 7 states have internal predecessors, (2533), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 19:53:29,642 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 496.0) internal successors, (3968), 8 states have internal predecessors, (3968), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 19:53:29,643 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 496.0) internal successors, (3968), 8 states have internal predecessors, (3968), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 19:53:29,643 INFO L175 Difference]: Start difference. First operand has 501 places, 568 transitions, 2317 flow. Second operand 7 states and 2533 transitions. [2022-11-02 19:53:29,643 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 507 places, 581 transitions, 2609 flow [2022-11-02 19:53:29,659 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 490 places, 581 transitions, 2444 flow, removed 24 selfloop flow, removed 17 redundant places. [2022-11-02 19:53:29,667 INFO L231 Difference]: Finished difference. Result has 495 places, 564 transitions, 2133 flow [2022-11-02 19:53:29,669 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=496, PETRI_DIFFERENCE_MINUEND_FLOW=2152, PETRI_DIFFERENCE_MINUEND_PLACES=484, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=568, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=566, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2133, PETRI_PLACES=495, PETRI_TRANSITIONS=564} [2022-11-02 19:53:29,670 INFO L287 CegarLoopForPetriNet]: 435 programPoint places, 60 predicate places. [2022-11-02 19:53:29,670 INFO L495 AbstractCegarLoop]: Abstraction has has 495 places, 564 transitions, 2133 flow [2022-11-02 19:53:29,671 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 356.57142857142856) internal successors, (2496), 7 states have internal predecessors, (2496), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 19:53:29,671 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 19:53:29,674 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 19:53:29,717 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a819c3b2-1e20-4e4a-9190-ed8be6a5a066/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-11-02 19:53:29,886 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a819c3b2-1e20-4e4a-9190-ed8be6a5a066/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-11-02 19:53:29,887 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-02 19:53:29,887 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 19:53:29,888 INFO L85 PathProgramCache]: Analyzing trace with hash 124538989, now seen corresponding path program 1 times [2022-11-02 19:53:29,888 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 19:53:29,888 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1730774701] [2022-11-02 19:53:29,888 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 19:53:29,888 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 19:53:30,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:53:30,851 INFO L134 CoverageAnalysis]: Checked inductivity of 484 backedges. 0 proven. 75 refuted. 0 times theorem prover too weak. 409 trivial. 0 not checked. [2022-11-02 19:53:30,852 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 19:53:30,852 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1730774701] [2022-11-02 19:53:30,852 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1730774701] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 19:53:30,853 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [773415997] [2022-11-02 19:53:30,853 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 19:53:30,853 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 19:53:30,853 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a819c3b2-1e20-4e4a-9190-ed8be6a5a066/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 19:53:30,854 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a819c3b2-1e20-4e4a-9190-ed8be6a5a066/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 19:53:30,884 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a819c3b2-1e20-4e4a-9190-ed8be6a5a066/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-11-02 19:53:31,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:53:31,499 INFO L263 TraceCheckSpWp]: Trace formula consists of 1164 conjuncts, 14 conjunts are in the unsatisfiable core [2022-11-02 19:53:31,506 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 19:53:31,850 INFO L134 CoverageAnalysis]: Checked inductivity of 484 backedges. 0 proven. 75 refuted. 0 times theorem prover too weak. 409 trivial. 0 not checked. [2022-11-02 19:53:31,850 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 19:53:32,184 INFO L134 CoverageAnalysis]: Checked inductivity of 484 backedges. 0 proven. 75 refuted. 0 times theorem prover too weak. 409 trivial. 0 not checked. [2022-11-02 19:53:32,185 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [773415997] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 19:53:32,185 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-02 19:53:32,186 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 15] total 39 [2022-11-02 19:53:32,186 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [639790372] [2022-11-02 19:53:32,186 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-02 19:53:32,188 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2022-11-02 19:53:32,188 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 19:53:32,189 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2022-11-02 19:53:32,190 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=345, Invalid=1137, Unknown=0, NotChecked=0, Total=1482 [2022-11-02 19:53:32,200 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 336 out of 496 [2022-11-02 19:53:32,209 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 495 places, 564 transitions, 2133 flow. Second operand has 39 states, 39 states have (on average 340.87179487179486) internal successors, (13294), 39 states have internal predecessors, (13294), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 19:53:32,209 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 19:53:32,209 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 336 of 496 [2022-11-02 19:53:32,210 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 19:53:35,283 INFO L130 PetriNetUnfolder]: 306/2376 cut-off events. [2022-11-02 19:53:35,283 INFO L131 PetriNetUnfolder]: For 1755/1791 co-relation queries the response was YES. [2022-11-02 19:53:35,295 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4656 conditions, 2376 events. 306/2376 cut-off events. For 1755/1791 co-relation queries the response was YES. Maximal size of possible extension queue 93. Compared 15135 event pairs, 110 based on Foata normal form. 12/2259 useless extension candidates. Maximal degree in co-relation 4621. Up to 461 conditions per place. [2022-11-02 19:53:35,304 INFO L137 encePairwiseOnDemand]: 468/496 looper letters, 206 selfloop transitions, 114 changer transitions 0/638 dead transitions. [2022-11-02 19:53:35,304 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 526 places, 638 transitions, 3205 flow [2022-11-02 19:53:35,304 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2022-11-02 19:53:35,305 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2022-11-02 19:53:35,315 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 12340 transitions. [2022-11-02 19:53:35,321 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.691084229390681 [2022-11-02 19:53:35,321 INFO L72 ComplementDD]: Start complementDD. Operand 36 states and 12340 transitions. [2022-11-02 19:53:35,321 INFO L73 IsDeterministic]: Start isDeterministic. Operand 36 states and 12340 transitions. [2022-11-02 19:53:35,327 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 19:53:35,328 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 36 states and 12340 transitions. [2022-11-02 19:53:35,346 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 37 states, 36 states have (on average 342.77777777777777) internal successors, (12340), 36 states have internal predecessors, (12340), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 19:53:35,367 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 37 states, 37 states have (on average 496.0) internal successors, (18352), 37 states have internal predecessors, (18352), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 19:53:35,372 INFO L81 ComplementDD]: Finished complementDD. Result has 37 states, 37 states have (on average 496.0) internal successors, (18352), 37 states have internal predecessors, (18352), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 19:53:35,372 INFO L175 Difference]: Start difference. First operand has 495 places, 564 transitions, 2133 flow. Second operand 36 states and 12340 transitions. [2022-11-02 19:53:35,372 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 526 places, 638 transitions, 3205 flow [2022-11-02 19:53:35,391 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 521 places, 638 transitions, 3193 flow, removed 5 selfloop flow, removed 5 redundant places. [2022-11-02 19:53:35,400 INFO L231 Difference]: Finished difference. Result has 528 places, 602 transitions, 2680 flow [2022-11-02 19:53:35,401 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=496, PETRI_DIFFERENCE_MINUEND_FLOW=2121, PETRI_DIFFERENCE_MINUEND_PLACES=486, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=564, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=80, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=482, PETRI_DIFFERENCE_SUBTRAHEND_STATES=36, PETRI_FLOW=2680, PETRI_PLACES=528, PETRI_TRANSITIONS=602} [2022-11-02 19:53:35,402 INFO L287 CegarLoopForPetriNet]: 435 programPoint places, 93 predicate places. [2022-11-02 19:53:35,402 INFO L495 AbstractCegarLoop]: Abstraction has has 528 places, 602 transitions, 2680 flow [2022-11-02 19:53:35,405 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 39 states, 39 states have (on average 340.87179487179486) internal successors, (13294), 39 states have internal predecessors, (13294), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 19:53:35,405 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 19:53:35,405 INFO L208 CegarLoopForPetriNet]: trace histogram [11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 19:53:35,449 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a819c3b2-1e20-4e4a-9190-ed8be6a5a066/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-11-02 19:53:35,630 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a819c3b2-1e20-4e4a-9190-ed8be6a5a066/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 19:53:35,631 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-02 19:53:35,631 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 19:53:35,632 INFO L85 PathProgramCache]: Analyzing trace with hash -2091734081, now seen corresponding path program 2 times [2022-11-02 19:53:35,632 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 19:53:35,632 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [351199891] [2022-11-02 19:53:35,632 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 19:53:35,632 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 19:53:35,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:53:37,383 INFO L134 CoverageAnalysis]: Checked inductivity of 1126 backedges. 0 proven. 396 refuted. 0 times theorem prover too weak. 730 trivial. 0 not checked. [2022-11-02 19:53:37,383 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 19:53:37,383 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [351199891] [2022-11-02 19:53:37,384 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [351199891] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 19:53:37,384 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1437646067] [2022-11-02 19:53:37,384 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-02 19:53:37,384 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 19:53:37,384 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a819c3b2-1e20-4e4a-9190-ed8be6a5a066/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 19:53:37,387 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a819c3b2-1e20-4e4a-9190-ed8be6a5a066/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 19:53:37,406 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a819c3b2-1e20-4e4a-9190-ed8be6a5a066/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-11-02 19:53:37,973 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-11-02 19:53:37,974 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-02 19:53:37,978 INFO L263 TraceCheckSpWp]: Trace formula consists of 696 conjuncts, 11 conjunts are in the unsatisfiable core [2022-11-02 19:53:37,986 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 19:53:38,124 INFO L134 CoverageAnalysis]: Checked inductivity of 1126 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1126 trivial. 0 not checked. [2022-11-02 19:53:38,124 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 19:53:38,127 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1437646067] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 19:53:38,128 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-02 19:53:38,128 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [27] total 32 [2022-11-02 19:53:38,129 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [729645372] [2022-11-02 19:53:38,130 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 19:53:38,131 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-02 19:53:38,131 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 19:53:38,132 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-02 19:53:38,132 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=185, Invalid=807, Unknown=0, NotChecked=0, Total=992 [2022-11-02 19:53:38,135 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 345 out of 496 [2022-11-02 19:53:38,137 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 528 places, 602 transitions, 2680 flow. Second operand has 7 states, 7 states have (on average 356.57142857142856) internal successors, (2496), 7 states have internal predecessors, (2496), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 19:53:38,137 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 19:53:38,137 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 345 of 496 [2022-11-02 19:53:38,137 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 19:53:39,745 INFO L130 PetriNetUnfolder]: 311/2580 cut-off events. [2022-11-02 19:53:39,745 INFO L131 PetriNetUnfolder]: For 1957/1997 co-relation queries the response was YES. [2022-11-02 19:53:39,754 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5254 conditions, 2580 events. 311/2580 cut-off events. For 1957/1997 co-relation queries the response was YES. Maximal size of possible extension queue 89. Compared 17591 event pairs, 110 based on Foata normal form. 5/2471 useless extension candidates. Maximal degree in co-relation 5216. Up to 909 conditions per place. [2022-11-02 19:53:39,761 INFO L137 encePairwiseOnDemand]: 488/496 looper letters, 125 selfloop transitions, 4 changer transitions 4/614 dead transitions. [2022-11-02 19:53:39,761 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 534 places, 614 transitions, 2972 flow [2022-11-02 19:53:39,762 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-02 19:53:39,762 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-02 19:53:39,763 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2532 transitions. [2022-11-02 19:53:39,765 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.7292626728110599 [2022-11-02 19:53:39,765 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2532 transitions. [2022-11-02 19:53:39,765 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2532 transitions. [2022-11-02 19:53:39,766 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 19:53:39,766 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2532 transitions. [2022-11-02 19:53:39,770 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 361.7142857142857) internal successors, (2532), 7 states have internal predecessors, (2532), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 19:53:39,774 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 496.0) internal successors, (3968), 8 states have internal predecessors, (3968), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 19:53:39,775 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 496.0) internal successors, (3968), 8 states have internal predecessors, (3968), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 19:53:39,775 INFO L175 Difference]: Start difference. First operand has 528 places, 602 transitions, 2680 flow. Second operand 7 states and 2532 transitions. [2022-11-02 19:53:39,776 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 534 places, 614 transitions, 2972 flow [2022-11-02 19:53:39,796 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 531 places, 614 transitions, 2847 flow, removed 16 selfloop flow, removed 3 redundant places. [2022-11-02 19:53:39,805 INFO L231 Difference]: Finished difference. Result has 536 places, 605 transitions, 2591 flow [2022-11-02 19:53:39,806 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=496, PETRI_DIFFERENCE_MINUEND_FLOW=2555, PETRI_DIFFERENCE_MINUEND_PLACES=525, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=602, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=598, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2591, PETRI_PLACES=536, PETRI_TRANSITIONS=605} [2022-11-02 19:53:39,806 INFO L287 CegarLoopForPetriNet]: 435 programPoint places, 101 predicate places. [2022-11-02 19:53:39,806 INFO L495 AbstractCegarLoop]: Abstraction has has 536 places, 605 transitions, 2591 flow [2022-11-02 19:53:39,807 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 356.57142857142856) internal successors, (2496), 7 states have internal predecessors, (2496), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 19:53:39,807 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 19:53:39,808 INFO L208 CegarLoopForPetriNet]: trace histogram [11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 19:53:39,846 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a819c3b2-1e20-4e4a-9190-ed8be6a5a066/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-11-02 19:53:40,026 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a819c3b2-1e20-4e4a-9190-ed8be6a5a066/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2022-11-02 19:53:40,027 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-02 19:53:40,027 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 19:53:40,027 INFO L85 PathProgramCache]: Analyzing trace with hash -1949370059, now seen corresponding path program 1 times [2022-11-02 19:53:40,027 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 19:53:40,027 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [33681525] [2022-11-02 19:53:40,028 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 19:53:40,028 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 19:53:40,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:53:41,625 INFO L134 CoverageAnalysis]: Checked inductivity of 1126 backedges. 0 proven. 396 refuted. 0 times theorem prover too weak. 730 trivial. 0 not checked. [2022-11-02 19:53:41,625 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 19:53:41,625 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [33681525] [2022-11-02 19:53:41,625 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [33681525] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 19:53:41,626 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1681765602] [2022-11-02 19:53:41,626 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 19:53:41,626 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 19:53:41,626 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a819c3b2-1e20-4e4a-9190-ed8be6a5a066/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 19:53:41,628 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a819c3b2-1e20-4e4a-9190-ed8be6a5a066/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 19:53:41,630 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a819c3b2-1e20-4e4a-9190-ed8be6a5a066/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-11-02 19:53:42,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:53:42,255 INFO L263 TraceCheckSpWp]: Trace formula consists of 1320 conjuncts, 26 conjunts are in the unsatisfiable core [2022-11-02 19:53:42,265 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 19:53:43,120 INFO L134 CoverageAnalysis]: Checked inductivity of 1126 backedges. 0 proven. 396 refuted. 0 times theorem prover too weak. 730 trivial. 0 not checked. [2022-11-02 19:53:43,120 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 19:53:43,629 INFO L134 CoverageAnalysis]: Checked inductivity of 1126 backedges. 0 proven. 396 refuted. 0 times theorem prover too weak. 730 trivial. 0 not checked. [2022-11-02 19:53:43,630 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1681765602] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 19:53:43,630 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-02 19:53:43,630 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 27, 27] total 54 [2022-11-02 19:53:43,631 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [574931458] [2022-11-02 19:53:43,631 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-02 19:53:43,632 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 54 states [2022-11-02 19:53:43,633 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 19:53:43,633 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 54 interpolants. [2022-11-02 19:53:43,635 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=610, Invalid=2252, Unknown=0, NotChecked=0, Total=2862 [2022-11-02 19:53:43,650 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 336 out of 496 [2022-11-02 19:53:43,662 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 536 places, 605 transitions, 2591 flow. Second operand has 54 states, 54 states have (on average 340.25925925925924) internal successors, (18374), 54 states have internal predecessors, (18374), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 19:53:43,662 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 19:53:43,662 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 336 of 496 [2022-11-02 19:53:43,662 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 19:53:46,789 INFO L130 PetriNetUnfolder]: 311/2620 cut-off events. [2022-11-02 19:53:46,789 INFO L131 PetriNetUnfolder]: For 2375/2411 co-relation queries the response was YES. [2022-11-02 19:53:46,804 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5391 conditions, 2620 events. 311/2620 cut-off events. For 2375/2411 co-relation queries the response was YES. Maximal size of possible extension queue 94. Compared 17836 event pairs, 110 based on Foata normal form. 4/2495 useless extension candidates. Maximal degree in co-relation 5348. Up to 461 conditions per place. [2022-11-02 19:53:46,814 INFO L137 encePairwiseOnDemand]: 468/496 looper letters, 214 selfloop transitions, 126 changer transitions 0/661 dead transitions. [2022-11-02 19:53:46,814 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 574 places, 661 transitions, 3631 flow [2022-11-02 19:53:46,814 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2022-11-02 19:53:46,814 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2022-11-02 19:53:46,826 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 14368 transitions. [2022-11-02 19:53:46,834 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.6897081413210445 [2022-11-02 19:53:46,835 INFO L72 ComplementDD]: Start complementDD. Operand 42 states and 14368 transitions. [2022-11-02 19:53:46,835 INFO L73 IsDeterministic]: Start isDeterministic. Operand 42 states and 14368 transitions. [2022-11-02 19:53:46,840 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 19:53:46,840 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 42 states and 14368 transitions. [2022-11-02 19:53:46,859 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 43 states, 42 states have (on average 342.0952380952381) internal successors, (14368), 42 states have internal predecessors, (14368), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 19:53:46,882 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 43 states, 43 states have (on average 496.0) internal successors, (21328), 43 states have internal predecessors, (21328), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 19:53:46,887 INFO L81 ComplementDD]: Finished complementDD. Result has 43 states, 43 states have (on average 496.0) internal successors, (21328), 43 states have internal predecessors, (21328), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 19:53:46,887 INFO L175 Difference]: Start difference. First operand has 536 places, 605 transitions, 2591 flow. Second operand 42 states and 14368 transitions. [2022-11-02 19:53:46,887 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 574 places, 661 transitions, 3631 flow [2022-11-02 19:53:46,923 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 570 places, 661 transitions, 3623 flow, removed 3 selfloop flow, removed 4 redundant places. [2022-11-02 19:53:46,933 INFO L231 Difference]: Finished difference. Result has 573 places, 619 transitions, 3006 flow [2022-11-02 19:53:46,934 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=496, PETRI_DIFFERENCE_MINUEND_FLOW=2583, PETRI_DIFFERENCE_MINUEND_PLACES=529, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=605, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=116, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=487, PETRI_DIFFERENCE_SUBTRAHEND_STATES=42, PETRI_FLOW=3006, PETRI_PLACES=573, PETRI_TRANSITIONS=619} [2022-11-02 19:53:46,935 INFO L287 CegarLoopForPetriNet]: 435 programPoint places, 138 predicate places. [2022-11-02 19:53:46,935 INFO L495 AbstractCegarLoop]: Abstraction has has 573 places, 619 transitions, 3006 flow [2022-11-02 19:53:46,938 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 54 states, 54 states have (on average 340.25925925925924) internal successors, (18374), 54 states have internal predecessors, (18374), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 19:53:46,938 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 19:53:46,939 INFO L208 CegarLoopForPetriNet]: trace histogram [13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 19:53:46,985 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a819c3b2-1e20-4e4a-9190-ed8be6a5a066/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-11-02 19:53:47,166 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a819c3b2-1e20-4e4a-9190-ed8be6a5a066/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 19:53:47,167 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-02 19:53:47,167 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 19:53:47,168 INFO L85 PathProgramCache]: Analyzing trace with hash -1367594827, now seen corresponding path program 2 times [2022-11-02 19:53:47,168 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 19:53:47,168 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [134236808] [2022-11-02 19:53:47,168 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 19:53:47,168 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 19:53:47,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:53:48,209 INFO L134 CoverageAnalysis]: Checked inductivity of 1452 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1452 trivial. 0 not checked. [2022-11-02 19:53:48,210 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 19:53:48,210 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [134236808] [2022-11-02 19:53:48,211 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [134236808] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 19:53:48,211 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 19:53:48,211 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-02 19:53:48,211 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1090697605] [2022-11-02 19:53:48,211 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 19:53:48,213 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-02 19:53:48,213 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 19:53:48,214 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-02 19:53:48,214 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-02 19:53:48,216 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 412 out of 496 [2022-11-02 19:53:48,227 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 573 places, 619 transitions, 3006 flow. Second operand has 5 states, 5 states have (on average 417.8) internal successors, (2089), 5 states have internal predecessors, (2089), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 19:53:48,228 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 19:53:48,228 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 412 of 496 [2022-11-02 19:53:48,228 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 19:53:50,922 INFO L130 PetriNetUnfolder]: 852/4560 cut-off events. [2022-11-02 19:53:50,922 INFO L131 PetriNetUnfolder]: For 4093/4163 co-relation queries the response was YES. [2022-11-02 19:53:50,943 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9175 conditions, 4560 events. 852/4560 cut-off events. For 4093/4163 co-relation queries the response was YES. Maximal size of possible extension queue 194. Compared 38982 event pairs, 142 based on Foata normal form. 9/4280 useless extension candidates. Maximal degree in co-relation 9132. Up to 587 conditions per place. [2022-11-02 19:53:50,959 INFO L137 encePairwiseOnDemand]: 475/496 looper letters, 127 selfloop transitions, 63 changer transitions 6/737 dead transitions. [2022-11-02 19:53:50,959 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 580 places, 737 transitions, 3933 flow [2022-11-02 19:53:50,960 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-02 19:53:50,960 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-11-02 19:53:50,962 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 3463 transitions. [2022-11-02 19:53:50,963 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8727318548387096 [2022-11-02 19:53:50,964 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 3463 transitions. [2022-11-02 19:53:50,964 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 3463 transitions. [2022-11-02 19:53:50,965 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 19:53:50,965 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 3463 transitions. [2022-11-02 19:53:50,969 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 432.875) internal successors, (3463), 8 states have internal predecessors, (3463), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 19:53:50,973 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 496.0) internal successors, (4464), 9 states have internal predecessors, (4464), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 19:53:50,974 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 496.0) internal successors, (4464), 9 states have internal predecessors, (4464), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 19:53:50,975 INFO L175 Difference]: Start difference. First operand has 573 places, 619 transitions, 3006 flow. Second operand 8 states and 3463 transitions. [2022-11-02 19:53:50,975 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 580 places, 737 transitions, 3933 flow [2022-11-02 19:53:51,146 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 547 places, 737 transitions, 3704 flow, removed 8 selfloop flow, removed 33 redundant places. [2022-11-02 19:53:51,156 INFO L231 Difference]: Finished difference. Result has 554 places, 664 transitions, 3300 flow [2022-11-02 19:53:51,157 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=496, PETRI_DIFFERENCE_MINUEND_FLOW=2777, PETRI_DIFFERENCE_MINUEND_PLACES=540, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=619, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=589, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=3300, PETRI_PLACES=554, PETRI_TRANSITIONS=664} [2022-11-02 19:53:51,158 INFO L287 CegarLoopForPetriNet]: 435 programPoint places, 119 predicate places. [2022-11-02 19:53:51,158 INFO L495 AbstractCegarLoop]: Abstraction has has 554 places, 664 transitions, 3300 flow [2022-11-02 19:53:51,159 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 417.8) internal successors, (2089), 5 states have internal predecessors, (2089), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 19:53:51,159 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 19:53:51,160 INFO L208 CegarLoopForPetriNet]: trace histogram [13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 19:53:51,160 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-11-02 19:53:51,160 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-02 19:53:51,161 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 19:53:51,161 INFO L85 PathProgramCache]: Analyzing trace with hash -749002545, now seen corresponding path program 3 times [2022-11-02 19:53:51,161 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 19:53:51,161 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1610747022] [2022-11-02 19:53:51,161 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 19:53:51,162 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 19:53:51,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:53:54,511 INFO L134 CoverageAnalysis]: Checked inductivity of 1452 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1452 trivial. 0 not checked. [2022-11-02 19:53:54,513 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 19:53:54,513 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1610747022] [2022-11-02 19:53:54,514 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1610747022] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 19:53:54,514 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 19:53:54,514 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2022-11-02 19:53:54,514 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1893848017] [2022-11-02 19:53:54,515 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 19:53:54,516 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-11-02 19:53:54,516 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 19:53:54,516 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-11-02 19:53:54,517 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=239, Unknown=0, NotChecked=0, Total=272 [2022-11-02 19:53:54,523 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 344 out of 496 [2022-11-02 19:53:54,530 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 554 places, 664 transitions, 3300 flow. Second operand has 17 states, 17 states have (on average 349.52941176470586) internal successors, (5942), 17 states have internal predecessors, (5942), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 19:53:54,530 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 19:53:54,531 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 344 of 496 [2022-11-02 19:53:54,531 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 19:53:58,725 INFO L130 PetriNetUnfolder]: 852/4630 cut-off events. [2022-11-02 19:53:58,725 INFO L131 PetriNetUnfolder]: For 7448/7603 co-relation queries the response was YES. [2022-11-02 19:53:58,747 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10455 conditions, 4630 events. 852/4630 cut-off events. For 7448/7603 co-relation queries the response was YES. Maximal size of possible extension queue 195. Compared 40014 event pairs, 133 based on Foata normal form. 28/4351 useless extension candidates. Maximal degree in co-relation 10406. Up to 443 conditions per place. [2022-11-02 19:53:58,762 INFO L137 encePairwiseOnDemand]: 423/496 looper letters, 137 selfloop transitions, 125 changer transitions 6/744 dead transitions. [2022-11-02 19:53:58,762 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 581 places, 744 transitions, 4261 flow [2022-11-02 19:53:58,770 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2022-11-02 19:53:58,771 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2022-11-02 19:53:58,778 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 9849 transitions. [2022-11-02 19:53:58,781 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.7091733870967742 [2022-11-02 19:53:58,782 INFO L72 ComplementDD]: Start complementDD. Operand 28 states and 9849 transitions. [2022-11-02 19:53:58,782 INFO L73 IsDeterministic]: Start isDeterministic. Operand 28 states and 9849 transitions. [2022-11-02 19:53:58,785 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 19:53:58,786 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 28 states and 9849 transitions. [2022-11-02 19:53:58,798 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 29 states, 28 states have (on average 351.75) internal successors, (9849), 28 states have internal predecessors, (9849), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 19:53:58,812 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 29 states, 29 states have (on average 496.0) internal successors, (14384), 29 states have internal predecessors, (14384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 19:53:58,815 INFO L81 ComplementDD]: Finished complementDD. Result has 29 states, 29 states have (on average 496.0) internal successors, (14384), 29 states have internal predecessors, (14384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 19:53:58,815 INFO L175 Difference]: Start difference. First operand has 554 places, 664 transitions, 3300 flow. Second operand 28 states and 9849 transitions. [2022-11-02 19:53:58,815 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 581 places, 744 transitions, 4261 flow [2022-11-02 19:53:58,893 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 581 places, 744 transitions, 4257 flow, removed 2 selfloop flow, removed 0 redundant places. [2022-11-02 19:53:58,904 INFO L231 Difference]: Finished difference. Result has 585 places, 680 transitions, 3797 flow [2022-11-02 19:53:58,904 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=496, PETRI_DIFFERENCE_MINUEND_FLOW=3296, PETRI_DIFFERENCE_MINUEND_PLACES=554, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=664, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=110, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=547, PETRI_DIFFERENCE_SUBTRAHEND_STATES=28, PETRI_FLOW=3797, PETRI_PLACES=585, PETRI_TRANSITIONS=680} [2022-11-02 19:53:58,905 INFO L287 CegarLoopForPetriNet]: 435 programPoint places, 150 predicate places. [2022-11-02 19:53:58,905 INFO L495 AbstractCegarLoop]: Abstraction has has 585 places, 680 transitions, 3797 flow [2022-11-02 19:53:58,906 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 349.52941176470586) internal successors, (5942), 17 states have internal predecessors, (5942), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 19:53:58,906 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 19:53:58,907 INFO L208 CegarLoopForPetriNet]: trace histogram [13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 19:53:58,907 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-11-02 19:53:58,907 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-02 19:53:58,908 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 19:53:58,908 INFO L85 PathProgramCache]: Analyzing trace with hash -965617437, now seen corresponding path program 4 times [2022-11-02 19:53:58,908 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 19:53:58,908 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1519320564] [2022-11-02 19:53:58,909 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 19:53:58,909 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 19:53:59,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:54:00,055 INFO L134 CoverageAnalysis]: Checked inductivity of 1452 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1452 trivial. 0 not checked. [2022-11-02 19:54:00,056 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 19:54:00,056 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1519320564] [2022-11-02 19:54:00,056 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1519320564] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 19:54:00,056 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 19:54:00,056 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-02 19:54:00,057 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [694094461] [2022-11-02 19:54:00,057 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 19:54:00,057 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-02 19:54:00,058 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 19:54:00,058 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-02 19:54:00,058 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-02 19:54:00,060 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 412 out of 496 [2022-11-02 19:54:00,061 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 585 places, 680 transitions, 3797 flow. Second operand has 5 states, 5 states have (on average 417.8) internal successors, (2089), 5 states have internal predecessors, (2089), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 19:54:00,062 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 19:54:00,062 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 412 of 496 [2022-11-02 19:54:00,062 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 19:54:03,336 INFO L130 PetriNetUnfolder]: 1025/5318 cut-off events. [2022-11-02 19:54:03,337 INFO L131 PetriNetUnfolder]: For 12048/12147 co-relation queries the response was YES. [2022-11-02 19:54:03,372 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13130 conditions, 5318 events. 1025/5318 cut-off events. For 12048/12147 co-relation queries the response was YES. Maximal size of possible extension queue 249. Compared 48142 event pairs, 46 based on Foata normal form. 22/4939 useless extension candidates. Maximal degree in co-relation 13076. Up to 604 conditions per place. [2022-11-02 19:54:03,391 INFO L137 encePairwiseOnDemand]: 471/496 looper letters, 139 selfloop transitions, 106 changer transitions 2/788 dead transitions. [2022-11-02 19:54:03,391 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 592 places, 788 transitions, 4948 flow [2022-11-02 19:54:03,391 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-02 19:54:03,392 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-11-02 19:54:03,394 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 3465 transitions. [2022-11-02 19:54:03,396 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8732358870967742 [2022-11-02 19:54:03,396 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 3465 transitions. [2022-11-02 19:54:03,396 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 3465 transitions. [2022-11-02 19:54:03,397 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 19:54:03,398 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 3465 transitions. [2022-11-02 19:54:03,402 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 433.125) internal successors, (3465), 8 states have internal predecessors, (3465), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 19:54:03,407 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 496.0) internal successors, (4464), 9 states have internal predecessors, (4464), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 19:54:03,408 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 496.0) internal successors, (4464), 9 states have internal predecessors, (4464), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 19:54:03,408 INFO L175 Difference]: Start difference. First operand has 585 places, 680 transitions, 3797 flow. Second operand 8 states and 3465 transitions. [2022-11-02 19:54:03,408 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 592 places, 788 transitions, 4948 flow [2022-11-02 19:54:03,536 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 571 places, 788 transitions, 4810 flow, removed 7 selfloop flow, removed 21 redundant places. [2022-11-02 19:54:03,548 INFO L231 Difference]: Finished difference. Result has 578 places, 717 transitions, 4468 flow [2022-11-02 19:54:03,549 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=496, PETRI_DIFFERENCE_MINUEND_FLOW=3669, PETRI_DIFFERENCE_MINUEND_PLACES=564, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=680, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=70, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=592, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=4468, PETRI_PLACES=578, PETRI_TRANSITIONS=717} [2022-11-02 19:54:03,549 INFO L287 CegarLoopForPetriNet]: 435 programPoint places, 143 predicate places. [2022-11-02 19:54:03,549 INFO L495 AbstractCegarLoop]: Abstraction has has 578 places, 717 transitions, 4468 flow [2022-11-02 19:54:03,550 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 417.8) internal successors, (2089), 5 states have internal predecessors, (2089), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 19:54:03,550 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 19:54:03,551 INFO L208 CegarLoopForPetriNet]: trace histogram [13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 19:54:03,551 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-11-02 19:54:03,551 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-02 19:54:03,551 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 19:54:03,552 INFO L85 PathProgramCache]: Analyzing trace with hash -1701479697, now seen corresponding path program 1 times [2022-11-02 19:54:03,552 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 19:54:03,552 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [71679456] [2022-11-02 19:54:03,552 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 19:54:03,553 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 19:54:03,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:54:04,225 INFO L134 CoverageAnalysis]: Checked inductivity of 1452 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1452 trivial. 0 not checked. [2022-11-02 19:54:04,225 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 19:54:04,226 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [71679456] [2022-11-02 19:54:04,226 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [71679456] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 19:54:04,226 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 19:54:04,226 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-02 19:54:04,226 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [87230265] [2022-11-02 19:54:04,227 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 19:54:04,228 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 19:54:04,228 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 19:54:04,228 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 19:54:04,228 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 19:54:04,230 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 438 out of 496 [2022-11-02 19:54:04,231 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 578 places, 717 transitions, 4468 flow. Second operand has 3 states, 3 states have (on average 441.0) internal successors, (1323), 3 states have internal predecessors, (1323), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 19:54:04,231 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 19:54:04,231 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 438 of 496 [2022-11-02 19:54:04,231 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 19:54:06,247 INFO L130 PetriNetUnfolder]: 440/3754 cut-off events. [2022-11-02 19:54:06,247 INFO L131 PetriNetUnfolder]: For 10981/11051 co-relation queries the response was YES. [2022-11-02 19:54:06,271 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8924 conditions, 3754 events. 440/3754 cut-off events. For 10981/11051 co-relation queries the response was YES. Maximal size of possible extension queue 135. Compared 31233 event pairs, 65 based on Foata normal form. 37/3539 useless extension candidates. Maximal degree in co-relation 8865. Up to 603 conditions per place. [2022-11-02 19:54:06,281 INFO L137 encePairwiseOnDemand]: 493/496 looper letters, 111 selfloop transitions, 11 changer transitions 0/719 dead transitions. [2022-11-02 19:54:06,281 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 580 places, 719 transitions, 4641 flow [2022-11-02 19:54:06,282 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 19:54:06,282 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-02 19:54:06,283 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1356 transitions. [2022-11-02 19:54:06,284 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.9112903225806451 [2022-11-02 19:54:06,284 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1356 transitions. [2022-11-02 19:54:06,284 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1356 transitions. [2022-11-02 19:54:06,285 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 19:54:06,285 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1356 transitions. [2022-11-02 19:54:06,287 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 452.0) internal successors, (1356), 3 states have internal predecessors, (1356), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 19:54:06,289 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 496.0) internal successors, (1984), 4 states have internal predecessors, (1984), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 19:54:06,289 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 496.0) internal successors, (1984), 4 states have internal predecessors, (1984), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 19:54:06,289 INFO L175 Difference]: Start difference. First operand has 578 places, 717 transitions, 4468 flow. Second operand 3 states and 1356 transitions. [2022-11-02 19:54:06,289 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 580 places, 719 transitions, 4641 flow [2022-11-02 19:54:06,377 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 580 places, 719 transitions, 4623 flow, removed 9 selfloop flow, removed 0 redundant places. [2022-11-02 19:54:06,387 INFO L231 Difference]: Finished difference. Result has 580 places, 704 transitions, 4283 flow [2022-11-02 19:54:06,388 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=496, PETRI_DIFFERENCE_MINUEND_FLOW=4261, PETRI_DIFFERENCE_MINUEND_PLACES=578, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=704, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=693, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=4283, PETRI_PLACES=580, PETRI_TRANSITIONS=704} [2022-11-02 19:54:06,389 INFO L287 CegarLoopForPetriNet]: 435 programPoint places, 145 predicate places. [2022-11-02 19:54:06,389 INFO L495 AbstractCegarLoop]: Abstraction has has 580 places, 704 transitions, 4283 flow [2022-11-02 19:54:06,390 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 441.0) internal successors, (1323), 3 states have internal predecessors, (1323), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 19:54:06,390 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 19:54:06,390 INFO L208 CegarLoopForPetriNet]: trace histogram [13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 19:54:06,390 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-11-02 19:54:06,391 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-02 19:54:06,391 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 19:54:06,391 INFO L85 PathProgramCache]: Analyzing trace with hash 1791225396, now seen corresponding path program 1 times [2022-11-02 19:54:06,391 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 19:54:06,392 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [299207531] [2022-11-02 19:54:06,392 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 19:54:06,392 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 19:54:06,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:54:07,033 INFO L134 CoverageAnalysis]: Checked inductivity of 1452 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1452 trivial. 0 not checked. [2022-11-02 19:54:07,033 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 19:54:07,033 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [299207531] [2022-11-02 19:54:07,033 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [299207531] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 19:54:07,034 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 19:54:07,034 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-02 19:54:07,034 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1627703658] [2022-11-02 19:54:07,034 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 19:54:07,035 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 19:54:07,035 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 19:54:07,035 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 19:54:07,036 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 19:54:07,037 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 438 out of 496 [2022-11-02 19:54:07,038 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 580 places, 704 transitions, 4283 flow. Second operand has 3 states, 3 states have (on average 441.0) internal successors, (1323), 3 states have internal predecessors, (1323), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 19:54:07,038 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 19:54:07,038 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 438 of 496 [2022-11-02 19:54:07,038 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 19:54:08,846 INFO L130 PetriNetUnfolder]: 396/3391 cut-off events. [2022-11-02 19:54:08,846 INFO L131 PetriNetUnfolder]: For 9823/9897 co-relation queries the response was YES. [2022-11-02 19:54:08,862 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8151 conditions, 3391 events. 396/3391 cut-off events. For 9823/9897 co-relation queries the response was YES. Maximal size of possible extension queue 112. Compared 26786 event pairs, 65 based on Foata normal form. 27/3192 useless extension candidates. Maximal degree in co-relation 8091. Up to 549 conditions per place. [2022-11-02 19:54:08,872 INFO L137 encePairwiseOnDemand]: 493/496 looper letters, 125 selfloop transitions, 4 changer transitions 0/726 dead transitions. [2022-11-02 19:54:08,872 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 582 places, 726 transitions, 4793 flow [2022-11-02 19:54:08,874 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 19:54:08,874 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-02 19:54:08,875 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1356 transitions. [2022-11-02 19:54:08,876 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.9112903225806451 [2022-11-02 19:54:08,876 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1356 transitions. [2022-11-02 19:54:08,876 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1356 transitions. [2022-11-02 19:54:08,877 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 19:54:08,877 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1356 transitions. [2022-11-02 19:54:08,879 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 452.0) internal successors, (1356), 3 states have internal predecessors, (1356), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 19:54:08,881 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 496.0) internal successors, (1984), 4 states have internal predecessors, (1984), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 19:54:08,882 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 496.0) internal successors, (1984), 4 states have internal predecessors, (1984), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 19:54:08,882 INFO L175 Difference]: Start difference. First operand has 580 places, 704 transitions, 4283 flow. Second operand 3 states and 1356 transitions. [2022-11-02 19:54:08,882 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 582 places, 726 transitions, 4793 flow [2022-11-02 19:54:08,982 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 581 places, 726 transitions, 4779 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-02 19:54:08,992 INFO L231 Difference]: Finished difference. Result has 582 places, 704 transitions, 4286 flow [2022-11-02 19:54:08,993 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=496, PETRI_DIFFERENCE_MINUEND_FLOW=4272, PETRI_DIFFERENCE_MINUEND_PLACES=579, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=704, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=700, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=4286, PETRI_PLACES=582, PETRI_TRANSITIONS=704} [2022-11-02 19:54:08,994 INFO L287 CegarLoopForPetriNet]: 435 programPoint places, 147 predicate places. [2022-11-02 19:54:08,994 INFO L495 AbstractCegarLoop]: Abstraction has has 582 places, 704 transitions, 4286 flow [2022-11-02 19:54:08,995 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 441.0) internal successors, (1323), 3 states have internal predecessors, (1323), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 19:54:08,995 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 19:54:08,995 INFO L208 CegarLoopForPetriNet]: trace histogram [13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 19:54:08,995 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-11-02 19:54:08,996 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-02 19:54:08,996 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 19:54:08,996 INFO L85 PathProgramCache]: Analyzing trace with hash -880890889, now seen corresponding path program 1 times [2022-11-02 19:54:08,996 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 19:54:08,997 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [577719303] [2022-11-02 19:54:08,997 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 19:54:08,997 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 19:54:09,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:54:12,944 INFO L134 CoverageAnalysis]: Checked inductivity of 1453 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1453 trivial. 0 not checked. [2022-11-02 19:54:12,945 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 19:54:12,945 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [577719303] [2022-11-02 19:54:12,946 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [577719303] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 19:54:12,946 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 19:54:12,946 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-11-02 19:54:12,947 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1797077405] [2022-11-02 19:54:12,947 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 19:54:12,949 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-11-02 19:54:12,949 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 19:54:12,950 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-11-02 19:54:12,950 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=374, Unknown=0, NotChecked=0, Total=420 [2022-11-02 19:54:12,954 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 232 out of 496 [2022-11-02 19:54:12,957 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 582 places, 704 transitions, 4286 flow. Second operand has 21 states, 21 states have (on average 241.1904761904762) internal successors, (5065), 21 states have internal predecessors, (5065), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 19:54:12,958 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 19:54:12,958 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 232 of 496 [2022-11-02 19:54:12,958 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 19:54:17,492 INFO L130 PetriNetUnfolder]: 765/3919 cut-off events. [2022-11-02 19:54:17,492 INFO L131 PetriNetUnfolder]: For 16170/16484 co-relation queries the response was YES. [2022-11-02 19:54:17,516 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11225 conditions, 3919 events. 765/3919 cut-off events. For 16170/16484 co-relation queries the response was YES. Maximal size of possible extension queue 177. Compared 30748 event pairs, 87 based on Foata normal form. 83/3669 useless extension candidates. Maximal degree in co-relation 11164. Up to 844 conditions per place. [2022-11-02 19:54:17,530 INFO L137 encePairwiseOnDemand]: 421/496 looper letters, 237 selfloop transitions, 124 changer transitions 1/732 dead transitions. [2022-11-02 19:54:17,531 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 613 places, 732 transitions, 5011 flow [2022-11-02 19:54:17,535 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2022-11-02 19:54:17,535 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2022-11-02 19:54:17,550 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 7699 transitions. [2022-11-02 19:54:17,556 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.4850680443548387 [2022-11-02 19:54:17,556 INFO L72 ComplementDD]: Start complementDD. Operand 32 states and 7699 transitions. [2022-11-02 19:54:17,557 INFO L73 IsDeterministic]: Start isDeterministic. Operand 32 states and 7699 transitions. [2022-11-02 19:54:17,561 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 19:54:17,562 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 32 states and 7699 transitions. [2022-11-02 19:54:17,578 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 33 states, 32 states have (on average 240.59375) internal successors, (7699), 32 states have internal predecessors, (7699), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 19:54:17,598 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 33 states, 33 states have (on average 496.0) internal successors, (16368), 33 states have internal predecessors, (16368), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 19:54:17,602 INFO L81 ComplementDD]: Finished complementDD. Result has 33 states, 33 states have (on average 496.0) internal successors, (16368), 33 states have internal predecessors, (16368), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 19:54:17,602 INFO L175 Difference]: Start difference. First operand has 582 places, 704 transitions, 4286 flow. Second operand 32 states and 7699 transitions. [2022-11-02 19:54:17,602 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 613 places, 732 transitions, 5011 flow [2022-11-02 19:54:17,712 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 611 places, 732 transitions, 4996 flow, removed 3 selfloop flow, removed 2 redundant places. [2022-11-02 19:54:17,723 INFO L231 Difference]: Finished difference. Result has 612 places, 698 transitions, 4429 flow [2022-11-02 19:54:17,724 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=496, PETRI_DIFFERENCE_MINUEND_FLOW=4043, PETRI_DIFFERENCE_MINUEND_PLACES=580, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=691, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=117, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=570, PETRI_DIFFERENCE_SUBTRAHEND_STATES=32, PETRI_FLOW=4429, PETRI_PLACES=612, PETRI_TRANSITIONS=698} [2022-11-02 19:54:17,725 INFO L287 CegarLoopForPetriNet]: 435 programPoint places, 177 predicate places. [2022-11-02 19:54:17,725 INFO L495 AbstractCegarLoop]: Abstraction has has 612 places, 698 transitions, 4429 flow [2022-11-02 19:54:17,726 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 241.1904761904762) internal successors, (5065), 21 states have internal predecessors, (5065), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 19:54:17,726 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 19:54:17,726 INFO L208 CegarLoopForPetriNet]: trace histogram [13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 19:54:17,727 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-11-02 19:54:17,727 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-02 19:54:17,727 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 19:54:17,727 INFO L85 PathProgramCache]: Analyzing trace with hash 895011233, now seen corresponding path program 1 times [2022-11-02 19:54:17,728 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 19:54:17,728 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [107730683] [2022-11-02 19:54:17,728 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 19:54:17,728 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 19:54:18,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:54:19,253 INFO L134 CoverageAnalysis]: Checked inductivity of 1453 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1453 trivial. 0 not checked. [2022-11-02 19:54:19,253 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 19:54:19,253 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [107730683] [2022-11-02 19:54:19,254 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [107730683] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 19:54:19,254 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 19:54:19,254 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-02 19:54:19,254 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [205798777] [2022-11-02 19:54:19,254 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 19:54:19,255 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-02 19:54:19,255 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 19:54:19,256 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-02 19:54:19,256 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-02 19:54:19,257 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 417 out of 496 [2022-11-02 19:54:19,258 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 612 places, 698 transitions, 4429 flow. Second operand has 4 states, 4 states have (on average 424.0) internal successors, (1696), 4 states have internal predecessors, (1696), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 19:54:19,259 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 19:54:19,259 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 417 of 496 [2022-11-02 19:54:19,259 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 19:54:21,609 INFO L130 PetriNetUnfolder]: 773/3909 cut-off events. [2022-11-02 19:54:21,610 INFO L131 PetriNetUnfolder]: For 16836/17165 co-relation queries the response was YES. [2022-11-02 19:54:21,628 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11156 conditions, 3909 events. 773/3909 cut-off events. For 16836/17165 co-relation queries the response was YES. Maximal size of possible extension queue 169. Compared 30423 event pairs, 143 based on Foata normal form. 51/3615 useless extension candidates. Maximal degree in co-relation 11095. Up to 733 conditions per place. [2022-11-02 19:54:21,641 INFO L137 encePairwiseOnDemand]: 479/496 looper letters, 143 selfloop transitions, 28 changer transitions 0/733 dead transitions. [2022-11-02 19:54:21,642 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 615 places, 733 transitions, 5091 flow [2022-11-02 19:54:21,642 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-02 19:54:21,642 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-11-02 19:54:21,644 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1753 transitions. [2022-11-02 19:54:21,645 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8835685483870968 [2022-11-02 19:54:21,645 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1753 transitions. [2022-11-02 19:54:21,645 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1753 transitions. [2022-11-02 19:54:21,646 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 19:54:21,646 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1753 transitions. [2022-11-02 19:54:21,649 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 438.25) internal successors, (1753), 4 states have internal predecessors, (1753), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 19:54:21,651 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 496.0) internal successors, (2480), 5 states have internal predecessors, (2480), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 19:54:21,652 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 496.0) internal successors, (2480), 5 states have internal predecessors, (2480), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 19:54:21,652 INFO L175 Difference]: Start difference. First operand has 612 places, 698 transitions, 4429 flow. Second operand 4 states and 1753 transitions. [2022-11-02 19:54:21,652 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 615 places, 733 transitions, 5091 flow [2022-11-02 19:54:21,753 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 588 places, 733 transitions, 4964 flow, removed 12 selfloop flow, removed 27 redundant places. [2022-11-02 19:54:21,765 INFO L231 Difference]: Finished difference. Result has 590 places, 703 transitions, 4477 flow [2022-11-02 19:54:21,766 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=496, PETRI_DIFFERENCE_MINUEND_FLOW=4310, PETRI_DIFFERENCE_MINUEND_PLACES=585, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=698, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=671, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=4477, PETRI_PLACES=590, PETRI_TRANSITIONS=703} [2022-11-02 19:54:21,767 INFO L287 CegarLoopForPetriNet]: 435 programPoint places, 155 predicate places. [2022-11-02 19:54:21,767 INFO L495 AbstractCegarLoop]: Abstraction has has 590 places, 703 transitions, 4477 flow [2022-11-02 19:54:21,768 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 424.0) internal successors, (1696), 4 states have internal predecessors, (1696), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 19:54:21,768 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 19:54:21,768 INFO L208 CegarLoopForPetriNet]: trace histogram [13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 19:54:21,768 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-11-02 19:54:21,769 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-02 19:54:21,769 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 19:54:21,769 INFO L85 PathProgramCache]: Analyzing trace with hash 522440972, now seen corresponding path program 1 times [2022-11-02 19:54:21,770 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 19:54:21,770 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1108549553] [2022-11-02 19:54:21,770 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 19:54:21,770 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 19:54:22,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:54:22,812 INFO L134 CoverageAnalysis]: Checked inductivity of 1452 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1452 trivial. 0 not checked. [2022-11-02 19:54:22,813 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 19:54:22,813 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1108549553] [2022-11-02 19:54:22,813 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1108549553] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 19:54:22,813 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 19:54:22,813 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-02 19:54:22,814 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [64216466] [2022-11-02 19:54:22,814 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 19:54:22,815 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-02 19:54:22,815 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 19:54:22,815 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-02 19:54:22,816 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-11-02 19:54:22,818 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 342 out of 496 [2022-11-02 19:54:22,820 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 590 places, 703 transitions, 4477 flow. Second operand has 8 states, 8 states have (on average 352.375) internal successors, (2819), 8 states have internal predecessors, (2819), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 19:54:22,820 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 19:54:22,821 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 342 of 496 [2022-11-02 19:54:22,821 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 19:54:24,807 INFO L130 PetriNetUnfolder]: 348/3165 cut-off events. [2022-11-02 19:54:24,808 INFO L131 PetriNetUnfolder]: For 10329/10386 co-relation queries the response was YES. [2022-11-02 19:54:24,822 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8489 conditions, 3165 events. 348/3165 cut-off events. For 10329/10386 co-relation queries the response was YES. Maximal size of possible extension queue 109. Compared 24414 event pairs, 73 based on Foata normal form. 20/2949 useless extension candidates. Maximal degree in co-relation 8427. Up to 976 conditions per place. [2022-11-02 19:54:24,829 INFO L137 encePairwiseOnDemand]: 487/496 looper letters, 189 selfloop transitions, 4 changer transitions 6/716 dead transitions. [2022-11-02 19:54:24,829 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 597 places, 716 transitions, 4907 flow [2022-11-02 19:54:24,829 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-02 19:54:24,829 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-11-02 19:54:24,832 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 2859 transitions. [2022-11-02 19:54:24,833 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.7205141129032258 [2022-11-02 19:54:24,833 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 2859 transitions. [2022-11-02 19:54:24,833 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 2859 transitions. [2022-11-02 19:54:24,834 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 19:54:24,835 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 2859 transitions. [2022-11-02 19:54:24,838 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 357.375) internal successors, (2859), 8 states have internal predecessors, (2859), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 19:54:24,843 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 496.0) internal successors, (4464), 9 states have internal predecessors, (4464), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 19:54:24,843 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 496.0) internal successors, (4464), 9 states have internal predecessors, (4464), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 19:54:24,844 INFO L175 Difference]: Start difference. First operand has 590 places, 703 transitions, 4477 flow. Second operand 8 states and 2859 transitions. [2022-11-02 19:54:24,844 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 597 places, 716 transitions, 4907 flow [2022-11-02 19:54:24,922 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 597 places, 716 transitions, 4901 flow, removed 3 selfloop flow, removed 0 redundant places. [2022-11-02 19:54:24,933 INFO L231 Difference]: Finished difference. Result has 603 places, 703 transitions, 4482 flow [2022-11-02 19:54:24,934 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=496, PETRI_DIFFERENCE_MINUEND_FLOW=4471, PETRI_DIFFERENCE_MINUEND_PLACES=590, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=703, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=699, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=4482, PETRI_PLACES=603, PETRI_TRANSITIONS=703} [2022-11-02 19:54:24,934 INFO L287 CegarLoopForPetriNet]: 435 programPoint places, 168 predicate places. [2022-11-02 19:54:24,935 INFO L495 AbstractCegarLoop]: Abstraction has has 603 places, 703 transitions, 4482 flow [2022-11-02 19:54:24,935 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 352.375) internal successors, (2819), 8 states have internal predecessors, (2819), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 19:54:24,935 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 19:54:24,936 INFO L208 CegarLoopForPetriNet]: trace histogram [13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 19:54:24,936 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-11-02 19:54:24,936 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-02 19:54:24,937 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 19:54:24,937 INFO L85 PathProgramCache]: Analyzing trace with hash -1730057080, now seen corresponding path program 1 times [2022-11-02 19:54:24,937 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 19:54:24,937 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1591759769] [2022-11-02 19:54:24,938 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 19:54:24,938 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 19:54:25,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:54:25,855 INFO L134 CoverageAnalysis]: Checked inductivity of 1452 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1452 trivial. 0 not checked. [2022-11-02 19:54:25,855 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 19:54:25,856 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1591759769] [2022-11-02 19:54:25,856 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1591759769] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 19:54:25,856 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 19:54:25,856 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-02 19:54:25,856 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1380493599] [2022-11-02 19:54:25,857 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 19:54:25,859 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-02 19:54:25,859 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 19:54:25,859 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-02 19:54:25,860 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-02 19:54:25,862 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 412 out of 496 [2022-11-02 19:54:25,863 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 603 places, 703 transitions, 4482 flow. Second operand has 5 states, 5 states have (on average 418.0) internal successors, (2090), 5 states have internal predecessors, (2090), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 19:54:25,863 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 19:54:25,863 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 412 of 496 [2022-11-02 19:54:25,864 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 19:54:29,086 INFO L130 PetriNetUnfolder]: 871/4858 cut-off events. [2022-11-02 19:54:29,086 INFO L131 PetriNetUnfolder]: For 21538/21788 co-relation queries the response was YES. [2022-11-02 19:54:29,124 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14645 conditions, 4858 events. 871/4858 cut-off events. For 21538/21788 co-relation queries the response was YES. Maximal size of possible extension queue 217. Compared 43469 event pairs, 120 based on Foata normal form. 45/4507 useless extension candidates. Maximal degree in co-relation 14576. Up to 634 conditions per place. [2022-11-02 19:54:29,136 INFO L137 encePairwiseOnDemand]: 475/496 looper letters, 203 selfloop transitions, 83 changer transitions 6/834 dead transitions. [2022-11-02 19:54:29,136 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 606 places, 834 transitions, 6405 flow [2022-11-02 19:54:29,137 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-02 19:54:29,137 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-11-02 19:54:29,140 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 3449 transitions. [2022-11-02 19:54:29,141 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8692036290322581 [2022-11-02 19:54:29,141 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 3449 transitions. [2022-11-02 19:54:29,141 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 3449 transitions. [2022-11-02 19:54:29,143 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 19:54:29,143 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 3449 transitions. [2022-11-02 19:54:29,148 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 431.125) internal successors, (3449), 8 states have internal predecessors, (3449), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 19:54:29,152 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 496.0) internal successors, (4464), 9 states have internal predecessors, (4464), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 19:54:29,153 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 496.0) internal successors, (4464), 9 states have internal predecessors, (4464), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 19:54:29,153 INFO L175 Difference]: Start difference. First operand has 603 places, 703 transitions, 4482 flow. Second operand 8 states and 3449 transitions. [2022-11-02 19:54:29,153 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 606 places, 834 transitions, 6405 flow [2022-11-02 19:54:29,315 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 601 places, 834 transitions, 6391 flow, removed 6 selfloop flow, removed 5 redundant places. [2022-11-02 19:54:29,324 INFO L231 Difference]: Finished difference. Result has 607 places, 735 transitions, 5314 flow [2022-11-02 19:54:29,325 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=496, PETRI_DIFFERENCE_MINUEND_FLOW=4468, PETRI_DIFFERENCE_MINUEND_PLACES=594, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=703, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=49, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=644, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=5314, PETRI_PLACES=607, PETRI_TRANSITIONS=735} [2022-11-02 19:54:29,325 INFO L287 CegarLoopForPetriNet]: 435 programPoint places, 172 predicate places. [2022-11-02 19:54:29,326 INFO L495 AbstractCegarLoop]: Abstraction has has 607 places, 735 transitions, 5314 flow [2022-11-02 19:54:29,326 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 418.0) internal successors, (2090), 5 states have internal predecessors, (2090), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 19:54:29,326 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 19:54:29,327 INFO L208 CegarLoopForPetriNet]: trace histogram [13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 19:54:29,327 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-11-02 19:54:29,327 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-02 19:54:29,327 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 19:54:29,328 INFO L85 PathProgramCache]: Analyzing trace with hash -1826518954, now seen corresponding path program 1 times [2022-11-02 19:54:29,328 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 19:54:29,328 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1125712965] [2022-11-02 19:54:29,328 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 19:54:29,329 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 19:54:29,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:54:30,426 INFO L134 CoverageAnalysis]: Checked inductivity of 1452 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1452 trivial. 0 not checked. [2022-11-02 19:54:30,429 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 19:54:30,429 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1125712965] [2022-11-02 19:54:30,429 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1125712965] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 19:54:30,429 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 19:54:30,430 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-02 19:54:30,430 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1059214427] [2022-11-02 19:54:30,430 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 19:54:30,431 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-02 19:54:30,431 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 19:54:30,432 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-02 19:54:30,432 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-02 19:54:30,434 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 412 out of 496 [2022-11-02 19:54:30,437 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 607 places, 735 transitions, 5314 flow. Second operand has 5 states, 5 states have (on average 418.0) internal successors, (2090), 5 states have internal predecessors, (2090), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 19:54:30,437 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 19:54:30,437 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 412 of 496 [2022-11-02 19:54:30,437 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 19:54:33,645 INFO L130 PetriNetUnfolder]: 864/4688 cut-off events. [2022-11-02 19:54:33,646 INFO L131 PetriNetUnfolder]: For 29045/29314 co-relation queries the response was YES. [2022-11-02 19:54:33,690 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14808 conditions, 4688 events. 864/4688 cut-off events. For 29045/29314 co-relation queries the response was YES. Maximal size of possible extension queue 214. Compared 41191 event pairs, 244 based on Foata normal form. 42/4348 useless extension candidates. Maximal degree in co-relation 14738. Up to 1131 conditions per place. [2022-11-02 19:54:33,702 INFO L137 encePairwiseOnDemand]: 483/496 looper letters, 232 selfloop transitions, 34 changer transitions 13/821 dead transitions. [2022-11-02 19:54:33,702 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 614 places, 821 transitions, 6634 flow [2022-11-02 19:54:33,703 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-02 19:54:33,703 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-11-02 19:54:33,706 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 3424 transitions. [2022-11-02 19:54:33,707 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8629032258064516 [2022-11-02 19:54:33,708 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 3424 transitions. [2022-11-02 19:54:33,708 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 3424 transitions. [2022-11-02 19:54:33,709 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 19:54:33,710 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 3424 transitions. [2022-11-02 19:54:33,714 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 428.0) internal successors, (3424), 8 states have internal predecessors, (3424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 19:54:33,719 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 496.0) internal successors, (4464), 9 states have internal predecessors, (4464), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 19:54:33,720 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 496.0) internal successors, (4464), 9 states have internal predecessors, (4464), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 19:54:33,720 INFO L175 Difference]: Start difference. First operand has 607 places, 735 transitions, 5314 flow. Second operand 8 states and 3424 transitions. [2022-11-02 19:54:33,720 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 614 places, 821 transitions, 6634 flow [2022-11-02 19:54:33,887 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 614 places, 821 transitions, 6624 flow, removed 5 selfloop flow, removed 0 redundant places. [2022-11-02 19:54:33,897 INFO L231 Difference]: Finished difference. Result has 619 places, 738 transitions, 5474 flow [2022-11-02 19:54:33,898 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=496, PETRI_DIFFERENCE_MINUEND_FLOW=5294, PETRI_DIFFERENCE_MINUEND_PLACES=607, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=734, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=703, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=5474, PETRI_PLACES=619, PETRI_TRANSITIONS=738} [2022-11-02 19:54:33,899 INFO L287 CegarLoopForPetriNet]: 435 programPoint places, 184 predicate places. [2022-11-02 19:54:33,900 INFO L495 AbstractCegarLoop]: Abstraction has has 619 places, 738 transitions, 5474 flow [2022-11-02 19:54:33,900 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 418.0) internal successors, (2090), 5 states have internal predecessors, (2090), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 19:54:33,900 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 19:54:33,901 INFO L208 CegarLoopForPetriNet]: trace histogram [13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 19:54:33,901 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2022-11-02 19:54:33,901 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-02 19:54:33,902 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 19:54:33,902 INFO L85 PathProgramCache]: Analyzing trace with hash 1649646490, now seen corresponding path program 1 times [2022-11-02 19:54:33,902 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 19:54:33,902 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [701348900] [2022-11-02 19:54:33,903 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 19:54:33,903 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 19:54:34,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:54:35,909 INFO L134 CoverageAnalysis]: Checked inductivity of 1452 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1452 trivial. 0 not checked. [2022-11-02 19:54:35,909 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 19:54:35,909 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [701348900] [2022-11-02 19:54:35,909 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [701348900] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 19:54:35,910 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 19:54:35,910 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2022-11-02 19:54:35,910 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [37271533] [2022-11-02 19:54:35,910 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 19:54:35,911 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-11-02 19:54:35,911 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 19:54:35,912 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-11-02 19:54:35,912 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=209, Unknown=0, NotChecked=0, Total=240 [2022-11-02 19:54:35,916 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 349 out of 496 [2022-11-02 19:54:35,920 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 619 places, 738 transitions, 5474 flow. Second operand has 16 states, 16 states have (on average 354.6875) internal successors, (5675), 16 states have internal predecessors, (5675), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 19:54:35,920 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 19:54:35,920 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 349 of 496 [2022-11-02 19:54:35,920 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 19:54:39,855 INFO L130 PetriNetUnfolder]: 855/4503 cut-off events. [2022-11-02 19:54:39,855 INFO L131 PetriNetUnfolder]: For 29974/31035 co-relation queries the response was YES. [2022-11-02 19:54:39,878 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14485 conditions, 4503 events. 855/4503 cut-off events. For 29974/31035 co-relation queries the response was YES. Maximal size of possible extension queue 227. Compared 38593 event pairs, 129 based on Foata normal form. 113/4282 useless extension candidates. Maximal degree in co-relation 14409. Up to 790 conditions per place. [2022-11-02 19:54:39,888 INFO L137 encePairwiseOnDemand]: 424/496 looper letters, 176 selfloop transitions, 98 changer transitions 1/775 dead transitions. [2022-11-02 19:54:39,888 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 641 places, 775 transitions, 6381 flow [2022-11-02 19:54:39,888 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2022-11-02 19:54:39,889 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2022-11-02 19:54:39,896 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 8891 transitions. [2022-11-02 19:54:39,898 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.7170161290322581 [2022-11-02 19:54:39,899 INFO L72 ComplementDD]: Start complementDD. Operand 25 states and 8891 transitions. [2022-11-02 19:54:39,899 INFO L73 IsDeterministic]: Start isDeterministic. Operand 25 states and 8891 transitions. [2022-11-02 19:54:39,902 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 19:54:39,902 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 25 states and 8891 transitions. [2022-11-02 19:54:39,912 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 26 states, 25 states have (on average 355.64) internal successors, (8891), 25 states have internal predecessors, (8891), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 19:54:39,924 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 26 states, 26 states have (on average 496.0) internal successors, (12896), 26 states have internal predecessors, (12896), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 19:54:39,926 INFO L81 ComplementDD]: Finished complementDD. Result has 26 states, 26 states have (on average 496.0) internal successors, (12896), 26 states have internal predecessors, (12896), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 19:54:39,927 INFO L175 Difference]: Start difference. First operand has 619 places, 738 transitions, 5474 flow. Second operand 25 states and 8891 transitions. [2022-11-02 19:54:39,927 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 641 places, 775 transitions, 6381 flow [2022-11-02 19:54:40,132 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 639 places, 775 transitions, 6353 flow, removed 14 selfloop flow, removed 2 redundant places. [2022-11-02 19:54:40,142 INFO L231 Difference]: Finished difference. Result has 641 places, 739 transitions, 5716 flow [2022-11-02 19:54:40,143 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=496, PETRI_DIFFERENCE_MINUEND_FLOW=5452, PETRI_DIFFERENCE_MINUEND_PLACES=615, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=738, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=97, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=640, PETRI_DIFFERENCE_SUBTRAHEND_STATES=25, PETRI_FLOW=5716, PETRI_PLACES=641, PETRI_TRANSITIONS=739} [2022-11-02 19:54:40,144 INFO L287 CegarLoopForPetriNet]: 435 programPoint places, 206 predicate places. [2022-11-02 19:54:40,144 INFO L495 AbstractCegarLoop]: Abstraction has has 641 places, 739 transitions, 5716 flow [2022-11-02 19:54:40,145 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 354.6875) internal successors, (5675), 16 states have internal predecessors, (5675), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 19:54:40,145 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 19:54:40,145 INFO L208 CegarLoopForPetriNet]: trace histogram [13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 19:54:40,145 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2022-11-02 19:54:40,145 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-02 19:54:40,146 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 19:54:40,146 INFO L85 PathProgramCache]: Analyzing trace with hash -1319976810, now seen corresponding path program 2 times [2022-11-02 19:54:40,146 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 19:54:40,150 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [59113748] [2022-11-02 19:54:40,150 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 19:54:40,150 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 19:54:40,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:54:41,850 INFO L134 CoverageAnalysis]: Checked inductivity of 1452 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1452 trivial. 0 not checked. [2022-11-02 19:54:41,850 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 19:54:41,850 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [59113748] [2022-11-02 19:54:41,850 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [59113748] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 19:54:41,851 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 19:54:41,851 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2022-11-02 19:54:41,851 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [199364623] [2022-11-02 19:54:41,851 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 19:54:41,852 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-11-02 19:54:41,852 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 19:54:41,853 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-11-02 19:54:41,853 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=239, Unknown=0, NotChecked=0, Total=272 [2022-11-02 19:54:41,857 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 344 out of 496 [2022-11-02 19:54:41,860 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 641 places, 739 transitions, 5716 flow. Second operand has 17 states, 17 states have (on average 349.5882352941176) internal successors, (5943), 17 states have internal predecessors, (5943), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 19:54:41,861 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 19:54:41,861 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 344 of 496 [2022-11-02 19:54:41,861 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 19:54:46,076 INFO L130 PetriNetUnfolder]: 864/5152 cut-off events. [2022-11-02 19:54:46,077 INFO L131 PetriNetUnfolder]: For 34461/34680 co-relation queries the response was YES. [2022-11-02 19:54:46,174 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16269 conditions, 5152 events. 864/5152 cut-off events. For 34461/34680 co-relation queries the response was YES. Maximal size of possible extension queue 215. Compared 47791 event pairs, 130 based on Foata normal form. 31/4763 useless extension candidates. Maximal degree in co-relation 16192. Up to 528 conditions per place. [2022-11-02 19:54:46,188 INFO L137 encePairwiseOnDemand]: 423/496 looper letters, 208 selfloop transitions, 137 changer transitions 5/827 dead transitions. [2022-11-02 19:54:46,188 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 668 places, 827 transitions, 7276 flow [2022-11-02 19:54:46,189 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2022-11-02 19:54:46,189 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2022-11-02 19:54:46,193 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 9835 transitions. [2022-11-02 19:54:46,195 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.7081653225806451 [2022-11-02 19:54:46,196 INFO L72 ComplementDD]: Start complementDD. Operand 28 states and 9835 transitions. [2022-11-02 19:54:46,196 INFO L73 IsDeterministic]: Start isDeterministic. Operand 28 states and 9835 transitions. [2022-11-02 19:54:46,198 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 19:54:46,199 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 28 states and 9835 transitions. [2022-11-02 19:54:46,210 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 29 states, 28 states have (on average 351.25) internal successors, (9835), 28 states have internal predecessors, (9835), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 19:54:46,224 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 29 states, 29 states have (on average 496.0) internal successors, (14384), 29 states have internal predecessors, (14384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 19:54:46,227 INFO L81 ComplementDD]: Finished complementDD. Result has 29 states, 29 states have (on average 496.0) internal successors, (14384), 29 states have internal predecessors, (14384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 19:54:46,228 INFO L175 Difference]: Start difference. First operand has 641 places, 739 transitions, 5716 flow. Second operand 28 states and 9835 transitions. [2022-11-02 19:54:46,228 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 668 places, 827 transitions, 7276 flow [2022-11-02 19:54:46,469 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 648 places, 827 transitions, 7177 flow, removed 2 selfloop flow, removed 20 redundant places. [2022-11-02 19:54:46,478 INFO L231 Difference]: Finished difference. Result has 650 places, 743 transitions, 6022 flow [2022-11-02 19:54:46,479 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=496, PETRI_DIFFERENCE_MINUEND_FLOW=5606, PETRI_DIFFERENCE_MINUEND_PLACES=621, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=738, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=131, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=603, PETRI_DIFFERENCE_SUBTRAHEND_STATES=28, PETRI_FLOW=6022, PETRI_PLACES=650, PETRI_TRANSITIONS=743} [2022-11-02 19:54:46,480 INFO L287 CegarLoopForPetriNet]: 435 programPoint places, 215 predicate places. [2022-11-02 19:54:46,480 INFO L495 AbstractCegarLoop]: Abstraction has has 650 places, 743 transitions, 6022 flow [2022-11-02 19:54:46,481 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 349.5882352941176) internal successors, (5943), 17 states have internal predecessors, (5943), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 19:54:46,481 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 19:54:46,481 INFO L208 CegarLoopForPetriNet]: trace histogram [13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 19:54:46,482 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2022-11-02 19:54:46,482 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-02 19:54:46,483 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 19:54:46,483 INFO L85 PathProgramCache]: Analyzing trace with hash -1524725736, now seen corresponding path program 2 times [2022-11-02 19:54:46,483 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 19:54:46,483 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [536916949] [2022-11-02 19:54:46,483 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 19:54:46,484 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 19:54:46,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:54:48,051 INFO L134 CoverageAnalysis]: Checked inductivity of 1452 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1452 trivial. 0 not checked. [2022-11-02 19:54:48,051 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 19:54:48,051 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [536916949] [2022-11-02 19:54:48,052 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [536916949] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 19:54:48,052 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 19:54:48,052 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2022-11-02 19:54:48,052 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1221003342] [2022-11-02 19:54:48,052 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 19:54:48,053 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-11-02 19:54:48,053 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 19:54:48,053 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-11-02 19:54:48,053 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=269, Unknown=0, NotChecked=0, Total=306 [2022-11-02 19:54:48,058 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 344 out of 496 [2022-11-02 19:54:48,062 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 650 places, 743 transitions, 6022 flow. Second operand has 18 states, 18 states have (on average 349.27777777777777) internal successors, (6287), 18 states have internal predecessors, (6287), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 19:54:48,062 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 19:54:48,063 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 344 of 496 [2022-11-02 19:54:48,063 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 19:54:52,346 INFO L130 PetriNetUnfolder]: 864/4945 cut-off events. [2022-11-02 19:54:52,346 INFO L131 PetriNetUnfolder]: For 38963/39194 co-relation queries the response was YES. [2022-11-02 19:54:52,389 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16530 conditions, 4945 events. 864/4945 cut-off events. For 38963/39194 co-relation queries the response was YES. Maximal size of possible extension queue 213. Compared 44812 event pairs, 227 based on Foata normal form. 24/4586 useless extension candidates. Maximal degree in co-relation 16451. Up to 859 conditions per place. [2022-11-02 19:54:52,404 INFO L137 encePairwiseOnDemand]: 431/496 looper letters, 250 selfloop transitions, 86 changer transitions 12/825 dead transitions. [2022-11-02 19:54:52,404 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 676 places, 825 transitions, 7461 flow [2022-11-02 19:54:52,405 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2022-11-02 19:54:52,405 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2022-11-02 19:54:52,409 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 9479 transitions. [2022-11-02 19:54:52,411 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.7078106332138591 [2022-11-02 19:54:52,411 INFO L72 ComplementDD]: Start complementDD. Operand 27 states and 9479 transitions. [2022-11-02 19:54:52,411 INFO L73 IsDeterministic]: Start isDeterministic. Operand 27 states and 9479 transitions. [2022-11-02 19:54:52,413 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 19:54:52,413 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 27 states and 9479 transitions. [2022-11-02 19:54:52,422 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 28 states, 27 states have (on average 351.0740740740741) internal successors, (9479), 27 states have internal predecessors, (9479), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 19:54:52,434 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 28 states, 28 states have (on average 496.0) internal successors, (13888), 28 states have internal predecessors, (13888), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 19:54:52,437 INFO L81 ComplementDD]: Finished complementDD. Result has 28 states, 28 states have (on average 496.0) internal successors, (13888), 28 states have internal predecessors, (13888), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 19:54:52,437 INFO L175 Difference]: Start difference. First operand has 650 places, 743 transitions, 6022 flow. Second operand 27 states and 9479 transitions. [2022-11-02 19:54:52,437 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 676 places, 825 transitions, 7461 flow [2022-11-02 19:54:52,646 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 656 places, 825 transitions, 7340 flow, removed 13 selfloop flow, removed 20 redundant places. [2022-11-02 19:54:52,656 INFO L231 Difference]: Finished difference. Result has 658 places, 737 transitions, 5968 flow [2022-11-02 19:54:52,657 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=496, PETRI_DIFFERENCE_MINUEND_FLOW=5872, PETRI_DIFFERENCE_MINUEND_PLACES=630, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=741, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=86, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=655, PETRI_DIFFERENCE_SUBTRAHEND_STATES=27, PETRI_FLOW=5968, PETRI_PLACES=658, PETRI_TRANSITIONS=737} [2022-11-02 19:54:52,658 INFO L287 CegarLoopForPetriNet]: 435 programPoint places, 223 predicate places. [2022-11-02 19:54:52,658 INFO L495 AbstractCegarLoop]: Abstraction has has 658 places, 737 transitions, 5968 flow [2022-11-02 19:54:52,659 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 349.27777777777777) internal successors, (6287), 18 states have internal predecessors, (6287), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 19:54:52,659 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 19:54:52,660 INFO L208 CegarLoopForPetriNet]: trace histogram [13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 19:54:52,660 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2022-11-02 19:54:52,660 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-02 19:54:52,660 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 19:54:52,661 INFO L85 PathProgramCache]: Analyzing trace with hash 1008291984, now seen corresponding path program 3 times [2022-11-02 19:54:52,661 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 19:54:52,661 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [106579882] [2022-11-02 19:54:52,661 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 19:54:52,661 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 19:54:52,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:54:53,369 INFO L134 CoverageAnalysis]: Checked inductivity of 1452 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1452 trivial. 0 not checked. [2022-11-02 19:54:53,370 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 19:54:53,370 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [106579882] [2022-11-02 19:54:53,370 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [106579882] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 19:54:53,370 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 19:54:53,370 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-02 19:54:53,370 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1683486220] [2022-11-02 19:54:53,370 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 19:54:53,371 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-02 19:54:53,371 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 19:54:53,372 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-02 19:54:53,372 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-02 19:54:53,373 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 412 out of 496 [2022-11-02 19:54:53,375 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 658 places, 737 transitions, 5968 flow. Second operand has 5 states, 5 states have (on average 418.0) internal successors, (2090), 5 states have internal predecessors, (2090), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 19:54:53,375 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 19:54:53,375 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 412 of 496 [2022-11-02 19:54:53,375 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 19:54:56,698 INFO L130 PetriNetUnfolder]: 852/4858 cut-off events. [2022-11-02 19:54:56,698 INFO L131 PetriNetUnfolder]: For 39293/39864 co-relation queries the response was YES. [2022-11-02 19:54:56,729 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16356 conditions, 4858 events. 852/4858 cut-off events. For 39293/39864 co-relation queries the response was YES. Maximal size of possible extension queue 237. Compared 43686 event pairs, 24 based on Foata normal form. 56/4549 useless extension candidates. Maximal degree in co-relation 16275. Up to 841 conditions per place. [2022-11-02 19:54:56,739 INFO L137 encePairwiseOnDemand]: 471/496 looper letters, 141 selfloop transitions, 115 changer transitions 6/804 dead transitions. [2022-11-02 19:54:56,739 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 663 places, 804 transitions, 7061 flow [2022-11-02 19:54:56,740 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-02 19:54:56,740 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-11-02 19:54:56,742 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 3442 transitions. [2022-11-02 19:54:56,743 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8674395161290323 [2022-11-02 19:54:56,743 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 3442 transitions. [2022-11-02 19:54:56,743 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 3442 transitions. [2022-11-02 19:54:56,744 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 19:54:56,744 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 3442 transitions. [2022-11-02 19:54:56,746 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 430.25) internal successors, (3442), 8 states have internal predecessors, (3442), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 19:54:56,748 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 496.0) internal successors, (4464), 9 states have internal predecessors, (4464), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 19:54:56,749 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 496.0) internal successors, (4464), 9 states have internal predecessors, (4464), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 19:54:56,749 INFO L175 Difference]: Start difference. First operand has 658 places, 737 transitions, 5968 flow. Second operand 8 states and 3442 transitions. [2022-11-02 19:54:56,749 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 663 places, 804 transitions, 7061 flow [2022-11-02 19:54:56,935 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 640 places, 804 transitions, 6925 flow, removed 20 selfloop flow, removed 23 redundant places. [2022-11-02 19:54:56,943 INFO L231 Difference]: Finished difference. Result has 642 places, 740 transitions, 6221 flow [2022-11-02 19:54:56,944 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=496, PETRI_DIFFERENCE_MINUEND_FLOW=5833, PETRI_DIFFERENCE_MINUEND_PLACES=633, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=735, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=107, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=624, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=6221, PETRI_PLACES=642, PETRI_TRANSITIONS=740} [2022-11-02 19:54:56,944 INFO L287 CegarLoopForPetriNet]: 435 programPoint places, 207 predicate places. [2022-11-02 19:54:56,944 INFO L495 AbstractCegarLoop]: Abstraction has has 642 places, 740 transitions, 6221 flow [2022-11-02 19:54:56,945 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 418.0) internal successors, (2090), 5 states have internal predecessors, (2090), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 19:54:56,945 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 19:54:56,945 INFO L208 CegarLoopForPetriNet]: trace histogram [13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 19:54:56,945 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2022-11-02 19:54:56,946 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-02 19:54:56,946 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 19:54:56,946 INFO L85 PathProgramCache]: Analyzing trace with hash 396228606, now seen corresponding path program 3 times [2022-11-02 19:54:56,946 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 19:54:56,947 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1126122530] [2022-11-02 19:54:56,947 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 19:54:56,947 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 19:54:57,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:54:57,560 INFO L134 CoverageAnalysis]: Checked inductivity of 1452 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1452 trivial. 0 not checked. [2022-11-02 19:54:57,560 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 19:54:57,560 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1126122530] [2022-11-02 19:54:57,560 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1126122530] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 19:54:57,560 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 19:54:57,560 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-02 19:54:57,560 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [767993434] [2022-11-02 19:54:57,561 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 19:54:57,561 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-02 19:54:57,562 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 19:54:57,562 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-02 19:54:57,562 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-02 19:54:57,563 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 412 out of 496 [2022-11-02 19:54:57,564 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 642 places, 740 transitions, 6221 flow. Second operand has 5 states, 5 states have (on average 418.0) internal successors, (2090), 5 states have internal predecessors, (2090), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 19:54:57,564 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 19:54:57,565 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 412 of 496 [2022-11-02 19:54:57,565 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 19:55:00,903 INFO L130 PetriNetUnfolder]: 851/4753 cut-off events. [2022-11-02 19:55:00,903 INFO L131 PetriNetUnfolder]: For 48480/48545 co-relation queries the response was YES. [2022-11-02 19:55:00,942 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16685 conditions, 4753 events. 851/4753 cut-off events. For 48480/48545 co-relation queries the response was YES. Maximal size of possible extension queue 198. Compared 41872 event pairs, 229 based on Foata normal form. 12/4346 useless extension candidates. Maximal degree in co-relation 16607. Up to 1294 conditions per place. [2022-11-02 19:55:00,955 INFO L137 encePairwiseOnDemand]: 484/496 looper letters, 215 selfloop transitions, 33 changer transitions 11/801 dead transitions. [2022-11-02 19:55:00,955 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 648 places, 801 transitions, 7276 flow [2022-11-02 19:55:00,955 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-02 19:55:00,955 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-02 19:55:00,958 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2997 transitions. [2022-11-02 19:55:00,958 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8631912442396313 [2022-11-02 19:55:00,958 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2997 transitions. [2022-11-02 19:55:00,959 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2997 transitions. [2022-11-02 19:55:00,959 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 19:55:00,959 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2997 transitions. [2022-11-02 19:55:00,963 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 428.14285714285717) internal successors, (2997), 7 states have internal predecessors, (2997), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 19:55:00,966 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 496.0) internal successors, (3968), 8 states have internal predecessors, (3968), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 19:55:00,967 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 496.0) internal successors, (3968), 8 states have internal predecessors, (3968), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 19:55:00,967 INFO L175 Difference]: Start difference. First operand has 642 places, 740 transitions, 6221 flow. Second operand 7 states and 2997 transitions. [2022-11-02 19:55:00,967 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 648 places, 801 transitions, 7276 flow [2022-11-02 19:55:01,216 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 645 places, 801 transitions, 7211 flow, removed 15 selfloop flow, removed 3 redundant places. [2022-11-02 19:55:01,225 INFO L231 Difference]: Finished difference. Result has 649 places, 739 transitions, 6263 flow [2022-11-02 19:55:01,226 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=496, PETRI_DIFFERENCE_MINUEND_FLOW=6145, PETRI_DIFFERENCE_MINUEND_PLACES=639, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=739, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=706, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=6263, PETRI_PLACES=649, PETRI_TRANSITIONS=739} [2022-11-02 19:55:01,227 INFO L287 CegarLoopForPetriNet]: 435 programPoint places, 214 predicate places. [2022-11-02 19:55:01,227 INFO L495 AbstractCegarLoop]: Abstraction has has 649 places, 739 transitions, 6263 flow [2022-11-02 19:55:01,227 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 418.0) internal successors, (2090), 5 states have internal predecessors, (2090), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 19:55:01,227 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 19:55:01,228 INFO L208 CegarLoopForPetriNet]: trace histogram [13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 19:55:01,228 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2022-11-02 19:55:01,228 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-02 19:55:01,229 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 19:55:01,229 INFO L85 PathProgramCache]: Analyzing trace with hash 1251580241, now seen corresponding path program 1 times [2022-11-02 19:55:01,229 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 19:55:01,229 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1131292053] [2022-11-02 19:55:01,230 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 19:55:01,230 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 19:55:01,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:55:02,507 INFO L134 CoverageAnalysis]: Checked inductivity of 1452 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1452 trivial. 0 not checked. [2022-11-02 19:55:02,508 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 19:55:02,508 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1131292053] [2022-11-02 19:55:02,508 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1131292053] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 19:55:02,508 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 19:55:02,508 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-02 19:55:02,508 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1084945261] [2022-11-02 19:55:02,508 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 19:55:02,509 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-02 19:55:02,509 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 19:55:02,510 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-02 19:55:02,510 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-02 19:55:02,512 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 417 out of 496 [2022-11-02 19:55:02,513 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 649 places, 739 transitions, 6263 flow. Second operand has 5 states, 5 states have (on average 422.4) internal successors, (2112), 5 states have internal predecessors, (2112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 19:55:02,513 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 19:55:02,513 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 417 of 496 [2022-11-02 19:55:02,513 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 19:55:06,011 INFO L130 PetriNetUnfolder]: 902/5079 cut-off events. [2022-11-02 19:55:06,012 INFO L131 PetriNetUnfolder]: For 56096/56620 co-relation queries the response was YES. [2022-11-02 19:55:06,071 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17394 conditions, 5079 events. 902/5079 cut-off events. For 56096/56620 co-relation queries the response was YES. Maximal size of possible extension queue 249. Compared 46623 event pairs, 245 based on Foata normal form. 177/4827 useless extension candidates. Maximal degree in co-relation 17311. Up to 746 conditions per place. [2022-11-02 19:55:06,087 INFO L137 encePairwiseOnDemand]: 475/496 looper letters, 204 selfloop transitions, 54 changer transitions 5/825 dead transitions. [2022-11-02 19:55:06,087 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 653 places, 825 transitions, 7569 flow [2022-11-02 19:55:06,087 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-02 19:55:06,087 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-02 19:55:06,090 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 3055 transitions. [2022-11-02 19:55:06,090 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8798963133640553 [2022-11-02 19:55:06,090 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 3055 transitions. [2022-11-02 19:55:06,091 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 3055 transitions. [2022-11-02 19:55:06,091 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 19:55:06,091 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 3055 transitions. [2022-11-02 19:55:06,093 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 436.42857142857144) internal successors, (3055), 7 states have internal predecessors, (3055), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 19:55:06,096 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 496.0) internal successors, (3968), 8 states have internal predecessors, (3968), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 19:55:06,097 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 496.0) internal successors, (3968), 8 states have internal predecessors, (3968), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 19:55:06,097 INFO L175 Difference]: Start difference. First operand has 649 places, 739 transitions, 6263 flow. Second operand 7 states and 3055 transitions. [2022-11-02 19:55:06,097 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 653 places, 825 transitions, 7569 flow [2022-11-02 19:55:06,476 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 646 places, 825 transitions, 7477 flow, removed 16 selfloop flow, removed 7 redundant places. [2022-11-02 19:55:06,487 INFO L231 Difference]: Finished difference. Result has 652 places, 754 transitions, 6498 flow [2022-11-02 19:55:06,488 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=496, PETRI_DIFFERENCE_MINUEND_FLOW=5999, PETRI_DIFFERENCE_MINUEND_PLACES=640, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=733, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=686, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=6498, PETRI_PLACES=652, PETRI_TRANSITIONS=754} [2022-11-02 19:55:06,489 INFO L287 CegarLoopForPetriNet]: 435 programPoint places, 217 predicate places. [2022-11-02 19:55:06,489 INFO L495 AbstractCegarLoop]: Abstraction has has 652 places, 754 transitions, 6498 flow [2022-11-02 19:55:06,489 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 422.4) internal successors, (2112), 5 states have internal predecessors, (2112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 19:55:06,489 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 19:55:06,490 INFO L208 CegarLoopForPetriNet]: trace histogram [13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 19:55:06,490 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2022-11-02 19:55:06,490 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-02 19:55:06,491 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 19:55:06,491 INFO L85 PathProgramCache]: Analyzing trace with hash 1567389214, now seen corresponding path program 1 times [2022-11-02 19:55:06,492 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 19:55:06,492 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1536811454] [2022-11-02 19:55:06,492 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 19:55:06,492 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 19:55:06,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:55:07,425 INFO L134 CoverageAnalysis]: Checked inductivity of 1453 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1453 trivial. 0 not checked. [2022-11-02 19:55:07,425 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 19:55:07,425 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1536811454] [2022-11-02 19:55:07,426 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1536811454] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 19:55:07,426 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 19:55:07,426 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-02 19:55:07,426 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1613819625] [2022-11-02 19:55:07,426 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 19:55:07,427 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-02 19:55:07,427 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 19:55:07,427 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-02 19:55:07,427 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-02 19:55:07,428 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 417 out of 496 [2022-11-02 19:55:07,429 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 652 places, 754 transitions, 6498 flow. Second operand has 5 states, 5 states have (on average 422.8) internal successors, (2114), 5 states have internal predecessors, (2114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 19:55:07,429 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 19:55:07,429 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 417 of 496 [2022-11-02 19:55:07,429 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 19:55:10,816 INFO L130 PetriNetUnfolder]: 913/5208 cut-off events. [2022-11-02 19:55:10,817 INFO L131 PetriNetUnfolder]: For 54853/54928 co-relation queries the response was YES. [2022-11-02 19:55:10,861 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18389 conditions, 5208 events. 913/5208 cut-off events. For 54853/54928 co-relation queries the response was YES. Maximal size of possible extension queue 235. Compared 47986 event pairs, 302 based on Foata normal form. 37/4780 useless extension candidates. Maximal degree in co-relation 18303. Up to 1264 conditions per place. [2022-11-02 19:55:10,875 INFO L137 encePairwiseOnDemand]: 483/496 looper letters, 171 selfloop transitions, 35 changer transitions 2/785 dead transitions. [2022-11-02 19:55:10,875 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 656 places, 785 transitions, 7223 flow [2022-11-02 19:55:10,878 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-02 19:55:10,879 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-02 19:55:10,880 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 2173 transitions. [2022-11-02 19:55:10,881 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8762096774193548 [2022-11-02 19:55:10,881 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 2173 transitions. [2022-11-02 19:55:10,882 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 2173 transitions. [2022-11-02 19:55:10,882 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 19:55:10,882 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 2173 transitions. [2022-11-02 19:55:10,885 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 434.6) internal successors, (2173), 5 states have internal predecessors, (2173), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 19:55:10,887 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 496.0) internal successors, (2976), 6 states have internal predecessors, (2976), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 19:55:10,888 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 496.0) internal successors, (2976), 6 states have internal predecessors, (2976), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 19:55:10,888 INFO L175 Difference]: Start difference. First operand has 652 places, 754 transitions, 6498 flow. Second operand 5 states and 2173 transitions. [2022-11-02 19:55:10,889 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 656 places, 785 transitions, 7223 flow [2022-11-02 19:55:11,144 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 652 places, 785 transitions, 7030 flow, removed 8 selfloop flow, removed 4 redundant places. [2022-11-02 19:55:11,153 INFO L231 Difference]: Finished difference. Result has 655 places, 749 transitions, 6383 flow [2022-11-02 19:55:11,154 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=496, PETRI_DIFFERENCE_MINUEND_FLOW=6089, PETRI_DIFFERENCE_MINUEND_PLACES=648, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=742, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=707, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=6383, PETRI_PLACES=655, PETRI_TRANSITIONS=749} [2022-11-02 19:55:11,154 INFO L287 CegarLoopForPetriNet]: 435 programPoint places, 220 predicate places. [2022-11-02 19:55:11,154 INFO L495 AbstractCegarLoop]: Abstraction has has 655 places, 749 transitions, 6383 flow [2022-11-02 19:55:11,155 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 422.8) internal successors, (2114), 5 states have internal predecessors, (2114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 19:55:11,155 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 19:55:11,155 INFO L208 CegarLoopForPetriNet]: trace histogram [13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 19:55:11,156 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2022-11-02 19:55:11,156 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-02 19:55:11,156 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 19:55:11,156 INFO L85 PathProgramCache]: Analyzing trace with hash -280190052, now seen corresponding path program 1 times [2022-11-02 19:55:11,156 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 19:55:11,157 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1693008831] [2022-11-02 19:55:11,157 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 19:55:11,157 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 19:55:11,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:55:16,174 INFO L134 CoverageAnalysis]: Checked inductivity of 1454 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1452 trivial. 0 not checked. [2022-11-02 19:55:16,175 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 19:55:16,175 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1693008831] [2022-11-02 19:55:16,175 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1693008831] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 19:55:16,175 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [220512596] [2022-11-02 19:55:16,175 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 19:55:16,175 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 19:55:16,176 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a819c3b2-1e20-4e4a-9190-ed8be6a5a066/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 19:55:16,182 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a819c3b2-1e20-4e4a-9190-ed8be6a5a066/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 19:55:16,202 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a819c3b2-1e20-4e4a-9190-ed8be6a5a066/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-11-02 19:55:17,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:55:17,091 INFO L263 TraceCheckSpWp]: Trace formula consists of 1387 conjuncts, 42 conjunts are in the unsatisfiable core [2022-11-02 19:55:17,110 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 19:55:23,152 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-02 19:55:23,153 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 9 select indices, 9 select index equivalence classes, 0 disjoint index pairs (out of 36 index pairs), introduced 9 new quantified variables, introduced 36 case distinctions, treesize of input 156 treesize of output 541 [2022-11-02 19:55:24,813 INFO L134 CoverageAnalysis]: Checked inductivity of 1454 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1452 trivial. 0 not checked. [2022-11-02 19:55:24,813 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 19:55:34,266 WARN L234 SmtUtils]: Spent 6.39s on a formula simplification. DAG size of input: 69 DAG size of output: 67 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-02 19:55:35,365 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-02 19:55:35,366 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 575 treesize of output 829