./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/weaver/popl20-more-parray-copy.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 5e519f3a Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_267aaff3-2a66-4104-8b1f-7e5eed270379/bin/uautomizer-Dbtcem3rbc/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_267aaff3-2a66-4104-8b1f-7e5eed270379/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_267aaff3-2a66-4104-8b1f-7e5eed270379/bin/uautomizer-Dbtcem3rbc/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_267aaff3-2a66-4104-8b1f-7e5eed270379/bin/uautomizer-Dbtcem3rbc/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/popl20-more-parray-copy.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_267aaff3-2a66-4104-8b1f-7e5eed270379/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_267aaff3-2a66-4104-8b1f-7e5eed270379/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 a1f81f307bb0fd2f7d30845e458dba6e8acf9b3ee1da86e74967e4c3005bce62 --- 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 21:09:53,131 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-02 21:09:53,133 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-02 21:09:53,171 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-02 21:09:53,171 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-02 21:09:53,172 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-02 21:09:53,174 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-02 21:09:53,175 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-02 21:09:53,177 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-02 21:09:53,178 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-02 21:09:53,179 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-02 21:09:53,180 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-02 21:09:53,180 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-02 21:09:53,181 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-02 21:09:53,182 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-02 21:09:53,184 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-02 21:09:53,184 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-02 21:09:53,185 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-02 21:09:53,187 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-02 21:09:53,188 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-02 21:09:53,190 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-02 21:09:53,191 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-02 21:09:53,192 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-02 21:09:53,193 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-02 21:09:53,196 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-02 21:09:53,197 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-02 21:09:53,197 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-02 21:09:53,198 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-02 21:09:53,198 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-02 21:09:53,199 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-02 21:09:53,200 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-02 21:09:53,201 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-02 21:09:53,201 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-02 21:09:53,202 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-02 21:09:53,203 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-02 21:09:53,204 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-02 21:09:53,209 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-02 21:09:53,209 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-02 21:09:53,209 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-02 21:09:53,210 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-02 21:09:53,210 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-02 21:09:53,211 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_267aaff3-2a66-4104-8b1f-7e5eed270379/bin/uautomizer-Dbtcem3rbc/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-11-02 21:09:53,245 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-02 21:09:53,250 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-02 21:09:53,251 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-02 21:09:53,251 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-02 21:09:53,253 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-02 21:09:53,253 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-02 21:09:53,254 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-02 21:09:53,255 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-02 21:09:53,255 INFO L138 SettingsManager]: * Use SBE=true [2022-11-02 21:09:53,255 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-02 21:09:53,256 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-02 21:09:53,256 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-02 21:09:53,257 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-02 21:09:53,257 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-02 21:09:53,257 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-02 21:09:53,257 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-02 21:09:53,257 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-02 21:09:53,258 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-02 21:09:53,258 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-02 21:09:53,258 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-02 21:09:53,258 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-02 21:09:53,258 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-02 21:09:53,259 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-02 21:09:53,259 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-02 21:09:53,259 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-02 21:09:53,259 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-02 21:09:53,261 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-02 21:09:53,261 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-02 21:09:53,261 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-02 21:09:53,262 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-02 21:09:53,262 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-02 21:09:53,262 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-02 21:09:53,262 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-02 21:09:53,263 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_267aaff3-2a66-4104-8b1f-7e5eed270379/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_267aaff3-2a66-4104-8b1f-7e5eed270379/bin/uautomizer-Dbtcem3rbc Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a1f81f307bb0fd2f7d30845e458dba6e8acf9b3ee1da86e74967e4c3005bce62 [2022-11-02 21:09:53,533 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-02 21:09:53,555 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-02 21:09:53,557 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-02 21:09:53,559 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-02 21:09:53,560 INFO L275 PluginConnector]: CDTParser initialized [2022-11-02 21:09:53,572 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_267aaff3-2a66-4104-8b1f-7e5eed270379/bin/uautomizer-Dbtcem3rbc/../../sv-benchmarks/c/weaver/popl20-more-parray-copy.wvr.c [2022-11-02 21:09:53,655 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_267aaff3-2a66-4104-8b1f-7e5eed270379/bin/uautomizer-Dbtcem3rbc/data/61e52cf2d/090674de81f84ce795e586addff6271f/FLAGd7d63a59b [2022-11-02 21:09:54,232 INFO L306 CDTParser]: Found 1 translation units. [2022-11-02 21:09:54,233 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_267aaff3-2a66-4104-8b1f-7e5eed270379/sv-benchmarks/c/weaver/popl20-more-parray-copy.wvr.c [2022-11-02 21:09:54,244 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_267aaff3-2a66-4104-8b1f-7e5eed270379/bin/uautomizer-Dbtcem3rbc/data/61e52cf2d/090674de81f84ce795e586addff6271f/FLAGd7d63a59b [2022-11-02 21:09:54,565 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_267aaff3-2a66-4104-8b1f-7e5eed270379/bin/uautomizer-Dbtcem3rbc/data/61e52cf2d/090674de81f84ce795e586addff6271f [2022-11-02 21:09:54,568 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-02 21:09:54,569 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-02 21:09:54,571 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-02 21:09:54,571 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-02 21:09:54,579 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-02 21:09:54,580 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 09:09:54" (1/1) ... [2022-11-02 21:09:54,581 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@67e0039f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:09:54, skipping insertion in model container [2022-11-02 21:09:54,581 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 09:09:54" (1/1) ... [2022-11-02 21:09:54,589 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-02 21:09:54,620 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-02 21:09:54,898 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_267aaff3-2a66-4104-8b1f-7e5eed270379/sv-benchmarks/c/weaver/popl20-more-parray-copy.wvr.c[2385,2398] [2022-11-02 21:09:54,915 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-02 21:09:54,932 INFO L203 MainTranslator]: Completed pre-run [2022-11-02 21:09:54,971 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_267aaff3-2a66-4104-8b1f-7e5eed270379/sv-benchmarks/c/weaver/popl20-more-parray-copy.wvr.c[2385,2398] [2022-11-02 21:09:54,984 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-02 21:09:55,001 INFO L208 MainTranslator]: Completed translation [2022-11-02 21:09:55,002 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:09:55 WrapperNode [2022-11-02 21:09:55,002 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-02 21:09:55,003 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-02 21:09:55,004 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-02 21:09:55,004 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-02 21:09:55,012 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:09:55" (1/1) ... [2022-11-02 21:09:55,031 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:09:55" (1/1) ... [2022-11-02 21:09:55,072 INFO L138 Inliner]: procedures = 24, calls = 41, calls flagged for inlining = 9, calls inlined = 11, statements flattened = 139 [2022-11-02 21:09:55,073 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-02 21:09:55,074 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-02 21:09:55,074 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-02 21:09:55,074 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-02 21:09:55,084 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:09:55" (1/1) ... [2022-11-02 21:09:55,084 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:09:55" (1/1) ... [2022-11-02 21:09:55,100 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:09:55" (1/1) ... [2022-11-02 21:09:55,101 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:09:55" (1/1) ... [2022-11-02 21:09:55,108 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:09:55" (1/1) ... [2022-11-02 21:09:55,122 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:09:55" (1/1) ... [2022-11-02 21:09:55,124 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:09:55" (1/1) ... [2022-11-02 21:09:55,135 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:09:55" (1/1) ... [2022-11-02 21:09:55,137 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-02 21:09:55,138 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-02 21:09:55,138 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-02 21:09:55,139 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-02 21:09:55,140 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:09:55" (1/1) ... [2022-11-02 21:09:55,150 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-02 21:09:55,163 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_267aaff3-2a66-4104-8b1f-7e5eed270379/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 21:09:55,178 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_267aaff3-2a66-4104-8b1f-7e5eed270379/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-02 21:09:55,204 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_267aaff3-2a66-4104-8b1f-7e5eed270379/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-02 21:09:55,232 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-02 21:09:55,232 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-11-02 21:09:55,232 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-11-02 21:09:55,233 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-11-02 21:09:55,233 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-11-02 21:09:55,233 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2022-11-02 21:09:55,233 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2022-11-02 21:09:55,233 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-02 21:09:55,234 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-02 21:09:55,234 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-02 21:09:55,234 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-02 21:09:55,234 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-02 21:09:55,235 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-02 21:09:55,235 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-02 21:09:55,235 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-02 21:09:55,239 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 21:09:55,389 INFO L235 CfgBuilder]: Building ICFG [2022-11-02 21:09:55,391 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-02 21:09:55,767 INFO L276 CfgBuilder]: Performing block encoding [2022-11-02 21:09:55,777 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-02 21:09:55,778 INFO L300 CfgBuilder]: Removed 5 assume(true) statements. [2022-11-02 21:09:55,780 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 09:09:55 BoogieIcfgContainer [2022-11-02 21:09:55,785 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-02 21:09:55,788 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-02 21:09:55,788 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-02 21:09:55,791 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-02 21:09:55,795 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.11 09:09:54" (1/3) ... [2022-11-02 21:09:55,795 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@62b25d4b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 09:09:55, skipping insertion in model container [2022-11-02 21:09:55,796 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:09:55" (2/3) ... [2022-11-02 21:09:55,796 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@62b25d4b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 09:09:55, skipping insertion in model container [2022-11-02 21:09:55,808 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 09:09:55" (3/3) ... [2022-11-02 21:09:55,809 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-more-parray-copy.wvr.c [2022-11-02 21:09:55,819 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-02 21:09:55,830 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-02 21:09:55,830 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-02 21:09:55,831 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-02 21:09:55,918 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2022-11-02 21:09:55,960 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 205 places, 212 transitions, 448 flow [2022-11-02 21:09:56,131 INFO L130 PetriNetUnfolder]: 17/209 cut-off events. [2022-11-02 21:09:56,132 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-11-02 21:09:56,138 INFO L83 FinitePrefix]: Finished finitePrefix Result has 222 conditions, 209 events. 17/209 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 123 event pairs, 0 based on Foata normal form. 0/191 useless extension candidates. Maximal degree in co-relation 154. Up to 2 conditions per place. [2022-11-02 21:09:56,139 INFO L82 GeneralOperation]: Start removeDead. Operand has 205 places, 212 transitions, 448 flow [2022-11-02 21:09:56,154 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 191 places, 198 transitions, 414 flow [2022-11-02 21:09:56,177 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-02 21:09:56,187 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;@fc29971, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-02 21:09:56,187 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2022-11-02 21:09:56,270 INFO L130 PetriNetUnfolder]: 17/197 cut-off events. [2022-11-02 21:09:56,271 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-11-02 21:09:56,271 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 21:09:56,272 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] [2022-11-02 21:09:56,273 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-02 21:09:56,279 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:09:56,280 INFO L85 PathProgramCache]: Analyzing trace with hash -544391092, now seen corresponding path program 1 times [2022-11-02 21:09:56,290 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:09:56,291 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1358141890] [2022-11-02 21:09:56,291 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:09:56,292 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:09:56,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:09:56,628 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 21:09:56,629 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:09:56,629 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1358141890] [2022-11-02 21:09:56,630 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1358141890] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:09:56,631 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:09:56,632 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-02 21:09:56,634 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [394277716] [2022-11-02 21:09:56,635 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:09:56,647 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-02 21:09:56,647 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:09:56,697 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-02 21:09:56,705 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-02 21:09:56,711 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 193 out of 212 [2022-11-02 21:09:56,721 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 191 places, 198 transitions, 414 flow. Second operand has 2 states, 2 states have (on average 197.5) internal successors, (395), 2 states have internal predecessors, (395), 0 states have call successors, (0), 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 21:09:56,727 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 21:09:56,728 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 193 of 212 [2022-11-02 21:09:56,745 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 21:09:56,808 INFO L130 PetriNetUnfolder]: 5/186 cut-off events. [2022-11-02 21:09:56,809 INFO L131 PetriNetUnfolder]: For 12/12 co-relation queries the response was YES. [2022-11-02 21:09:56,810 INFO L83 FinitePrefix]: Finished finitePrefix Result has 206 conditions, 186 events. 5/186 cut-off events. For 12/12 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 117 event pairs, 0 based on Foata normal form. 18/192 useless extension candidates. Maximal degree in co-relation 147. Up to 7 conditions per place. [2022-11-02 21:09:56,812 INFO L137 encePairwiseOnDemand]: 200/212 looper letters, 6 selfloop transitions, 0 changer transitions 7/186 dead transitions. [2022-11-02 21:09:56,812 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 192 places, 186 transitions, 402 flow [2022-11-02 21:09:56,814 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-02 21:09:56,817 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2022-11-02 21:09:56,826 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 404 transitions. [2022-11-02 21:09:56,829 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.9528301886792453 [2022-11-02 21:09:56,830 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 404 transitions. [2022-11-02 21:09:56,831 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 404 transitions. [2022-11-02 21:09:56,833 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 21:09:56,836 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 404 transitions. [2022-11-02 21:09:56,840 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 202.0) internal successors, (404), 2 states have internal predecessors, (404), 0 states have call successors, (0), 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 21:09:56,847 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 212.0) internal successors, (636), 3 states have internal predecessors, (636), 0 states have call successors, (0), 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 21:09:56,848 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 212.0) internal successors, (636), 3 states have internal predecessors, (636), 0 states have call successors, (0), 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 21:09:56,850 INFO L175 Difference]: Start difference. First operand has 191 places, 198 transitions, 414 flow. Second operand 2 states and 404 transitions. [2022-11-02 21:09:56,851 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 192 places, 186 transitions, 402 flow [2022-11-02 21:09:56,855 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 186 places, 186 transitions, 390 flow, removed 0 selfloop flow, removed 6 redundant places. [2022-11-02 21:09:56,860 INFO L231 Difference]: Finished difference. Result has 186 places, 179 transitions, 364 flow [2022-11-02 21:09:56,862 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=212, PETRI_DIFFERENCE_MINUEND_FLOW=378, PETRI_DIFFERENCE_MINUEND_PLACES=185, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=186, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=186, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=364, PETRI_PLACES=186, PETRI_TRANSITIONS=179} [2022-11-02 21:09:56,866 INFO L287 CegarLoopForPetriNet]: 191 programPoint places, -5 predicate places. [2022-11-02 21:09:56,866 INFO L495 AbstractCegarLoop]: Abstraction has has 186 places, 179 transitions, 364 flow [2022-11-02 21:09:56,867 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 197.5) internal successors, (395), 2 states have internal predecessors, (395), 0 states have call successors, (0), 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 21:09:56,867 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 21:09:56,867 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] [2022-11-02 21:09:56,868 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-02 21:09:56,868 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-02 21:09:56,869 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:09:56,869 INFO L85 PathProgramCache]: Analyzing trace with hash 1340485429, now seen corresponding path program 1 times [2022-11-02 21:09:56,869 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:09:56,870 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [687689064] [2022-11-02 21:09:56,870 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:09:56,870 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:09:56,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:09:57,754 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 21:09:57,755 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:09:57,756 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [687689064] [2022-11-02 21:09:57,757 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [687689064] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:09:57,758 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:09:57,758 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-02 21:09:57,759 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1135875516] [2022-11-02 21:09:57,760 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:09:57,761 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-02 21:09:57,762 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:09:57,763 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-02 21:09:57,764 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-11-02 21:09:57,767 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 127 out of 212 [2022-11-02 21:09:57,769 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 186 places, 179 transitions, 364 flow. Second operand has 8 states, 8 states have (on average 133.75) internal successors, (1070), 8 states have internal predecessors, (1070), 0 states have call successors, (0), 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 21:09:57,769 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 21:09:57,774 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 127 of 212 [2022-11-02 21:09:57,775 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 21:09:58,311 INFO L130 PetriNetUnfolder]: 155/600 cut-off events. [2022-11-02 21:09:58,311 INFO L131 PetriNetUnfolder]: For 17/17 co-relation queries the response was YES. [2022-11-02 21:09:58,316 INFO L83 FinitePrefix]: Finished finitePrefix Result has 908 conditions, 600 events. 155/600 cut-off events. For 17/17 co-relation queries the response was YES. Maximal size of possible extension queue 35. Compared 2167 event pairs, 74 based on Foata normal form. 2/482 useless extension candidates. Maximal degree in co-relation 905. Up to 246 conditions per place. [2022-11-02 21:09:58,320 INFO L137 encePairwiseOnDemand]: 197/212 looper letters, 63 selfloop transitions, 10 changer transitions 31/218 dead transitions. [2022-11-02 21:09:58,320 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 191 places, 218 transitions, 650 flow [2022-11-02 21:09:58,320 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-02 21:09:58,320 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2022-11-02 21:09:58,326 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1757 transitions. [2022-11-02 21:09:58,328 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.6375181422351234 [2022-11-02 21:09:58,328 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 1757 transitions. [2022-11-02 21:09:58,329 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 1757 transitions. [2022-11-02 21:09:58,330 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 21:09:58,330 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 1757 transitions. [2022-11-02 21:09:58,335 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 135.15384615384616) internal successors, (1757), 13 states have internal predecessors, (1757), 0 states have call successors, (0), 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 21:09:58,342 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 212.0) internal successors, (2968), 14 states have internal predecessors, (2968), 0 states have call successors, (0), 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 21:09:58,344 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 212.0) internal successors, (2968), 14 states have internal predecessors, (2968), 0 states have call successors, (0), 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 21:09:58,344 INFO L175 Difference]: Start difference. First operand has 186 places, 179 transitions, 364 flow. Second operand 13 states and 1757 transitions. [2022-11-02 21:09:58,345 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 191 places, 218 transitions, 650 flow [2022-11-02 21:09:58,347 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 191 places, 218 transitions, 650 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-02 21:09:58,351 INFO L231 Difference]: Finished difference. Result has 198 places, 181 transitions, 414 flow [2022-11-02 21:09:58,352 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=212, PETRI_DIFFERENCE_MINUEND_FLOW=364, PETRI_DIFFERENCE_MINUEND_PLACES=179, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=179, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=169, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=414, PETRI_PLACES=198, PETRI_TRANSITIONS=181} [2022-11-02 21:09:58,352 INFO L287 CegarLoopForPetriNet]: 191 programPoint places, 7 predicate places. [2022-11-02 21:09:58,353 INFO L495 AbstractCegarLoop]: Abstraction has has 198 places, 181 transitions, 414 flow [2022-11-02 21:09:58,354 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 133.75) internal successors, (1070), 8 states have internal predecessors, (1070), 0 states have call successors, (0), 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 21:09:58,354 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 21:09:58,354 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] [2022-11-02 21:09:58,354 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-02 21:09:58,355 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-02 21:09:58,355 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:09:58,356 INFO L85 PathProgramCache]: Analyzing trace with hash -30439042, now seen corresponding path program 1 times [2022-11-02 21:09:58,356 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:09:58,363 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1309071407] [2022-11-02 21:09:58,364 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:09:58,364 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:09:58,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:09:58,701 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-02 21:09:58,701 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:09:58,701 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1309071407] [2022-11-02 21:09:58,702 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1309071407] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 21:09:58,702 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [900247505] [2022-11-02 21:09:58,702 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:09:58,703 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 21:09:58,703 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_267aaff3-2a66-4104-8b1f-7e5eed270379/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 21:09:58,705 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_267aaff3-2a66-4104-8b1f-7e5eed270379/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 21:09:58,707 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_267aaff3-2a66-4104-8b1f-7e5eed270379/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-02 21:09:58,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:09:58,864 INFO L263 TraceCheckSpWp]: Trace formula consists of 359 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-02 21:09:58,872 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:09:59,209 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-02 21:09:59,209 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 21:09:59,572 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-02 21:09:59,573 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [900247505] provided 1 perfect and 1 imperfect interpolant sequences [2022-11-02 21:09:59,573 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-11-02 21:09:59,573 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [8, 7] total 14 [2022-11-02 21:09:59,573 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1588346542] [2022-11-02 21:09:59,574 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:09:59,576 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-02 21:09:59,576 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:09:59,577 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-02 21:09:59,577 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=130, Unknown=0, NotChecked=0, Total=182 [2022-11-02 21:09:59,580 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 156 out of 212 [2022-11-02 21:09:59,582 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 198 places, 181 transitions, 414 flow. Second operand has 7 states, 7 states have (on average 161.28571428571428) internal successors, (1129), 7 states have internal predecessors, (1129), 0 states have call successors, (0), 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 21:09:59,582 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 21:09:59,584 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 156 of 212 [2022-11-02 21:09:59,584 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 21:09:59,765 INFO L130 PetriNetUnfolder]: 41/284 cut-off events. [2022-11-02 21:09:59,765 INFO L131 PetriNetUnfolder]: For 25/25 co-relation queries the response was YES. [2022-11-02 21:09:59,767 INFO L83 FinitePrefix]: Finished finitePrefix Result has 455 conditions, 284 events. 41/284 cut-off events. For 25/25 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 586 event pairs, 12 based on Foata normal form. 0/262 useless extension candidates. Maximal degree in co-relation 444. Up to 61 conditions per place. [2022-11-02 21:09:59,769 INFO L137 encePairwiseOnDemand]: 204/212 looper letters, 44 selfloop transitions, 7 changer transitions 0/187 dead transitions. [2022-11-02 21:09:59,769 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 197 places, 187 transitions, 530 flow [2022-11-02 21:09:59,769 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-02 21:09:59,769 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-02 21:09:59,771 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1142 transitions. [2022-11-02 21:09:59,772 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.7695417789757413 [2022-11-02 21:09:59,772 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1142 transitions. [2022-11-02 21:09:59,772 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1142 transitions. [2022-11-02 21:09:59,773 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 21:09:59,773 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1142 transitions. [2022-11-02 21:09:59,776 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 163.14285714285714) internal successors, (1142), 7 states have internal predecessors, (1142), 0 states have call successors, (0), 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 21:09:59,780 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 212.0) internal successors, (1696), 8 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 21:09:59,781 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 212.0) internal successors, (1696), 8 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 21:09:59,781 INFO L175 Difference]: Start difference. First operand has 198 places, 181 transitions, 414 flow. Second operand 7 states and 1142 transitions. [2022-11-02 21:09:59,781 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 197 places, 187 transitions, 530 flow [2022-11-02 21:09:59,784 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 187 places, 187 transitions, 500 flow, removed 7 selfloop flow, removed 10 redundant places. [2022-11-02 21:09:59,786 INFO L231 Difference]: Finished difference. Result has 190 places, 183 transitions, 417 flow [2022-11-02 21:09:59,787 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=212, PETRI_DIFFERENCE_MINUEND_FLOW=384, PETRI_DIFFERENCE_MINUEND_PLACES=181, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=181, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=174, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=417, PETRI_PLACES=190, PETRI_TRANSITIONS=183} [2022-11-02 21:09:59,788 INFO L287 CegarLoopForPetriNet]: 191 programPoint places, -1 predicate places. [2022-11-02 21:09:59,788 INFO L495 AbstractCegarLoop]: Abstraction has has 190 places, 183 transitions, 417 flow [2022-11-02 21:09:59,789 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 161.28571428571428) internal successors, (1129), 7 states have internal predecessors, (1129), 0 states have call successors, (0), 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 21:09:59,789 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 21:09:59,789 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] [2022-11-02 21:09:59,830 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_267aaff3-2a66-4104-8b1f-7e5eed270379/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-02 21:09:59,990 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_267aaff3-2a66-4104-8b1f-7e5eed270379/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 21:09:59,990 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-02 21:09:59,990 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:09:59,991 INFO L85 PathProgramCache]: Analyzing trace with hash 1861351930, now seen corresponding path program 1 times [2022-11-02 21:09:59,991 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:09:59,991 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1783258567] [2022-11-02 21:09:59,991 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:09:59,992 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:10:00,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:10:00,349 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-02 21:10:00,351 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:10:00,352 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1783258567] [2022-11-02 21:10:00,352 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1783258567] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 21:10:00,352 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [51263674] [2022-11-02 21:10:00,353 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:10:00,353 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 21:10:00,353 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_267aaff3-2a66-4104-8b1f-7e5eed270379/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 21:10:00,354 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_267aaff3-2a66-4104-8b1f-7e5eed270379/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 21:10:00,388 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_267aaff3-2a66-4104-8b1f-7e5eed270379/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-02 21:10:00,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:10:00,500 INFO L263 TraceCheckSpWp]: Trace formula consists of 372 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-02 21:10:00,505 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:10:00,714 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-02 21:10:00,714 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 21:10:01,001 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-02 21:10:01,001 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [51263674] provided 1 perfect and 1 imperfect interpolant sequences [2022-11-02 21:10:01,001 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-11-02 21:10:01,002 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [10, 9] total 18 [2022-11-02 21:10:01,002 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1454085414] [2022-11-02 21:10:01,002 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:10:01,003 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-02 21:10:01,003 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:10:01,004 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-02 21:10:01,004 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=242, Unknown=0, NotChecked=0, Total=306 [2022-11-02 21:10:01,006 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 147 out of 212 [2022-11-02 21:10:01,008 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 190 places, 183 transitions, 417 flow. Second operand has 9 states, 9 states have (on average 151.66666666666666) internal successors, (1365), 9 states have internal predecessors, (1365), 0 states have call successors, (0), 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 21:10:01,009 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 21:10:01,009 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 147 of 212 [2022-11-02 21:10:01,009 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 21:10:01,483 INFO L130 PetriNetUnfolder]: 611/1316 cut-off events. [2022-11-02 21:10:01,483 INFO L131 PetriNetUnfolder]: For 589/797 co-relation queries the response was YES. [2022-11-02 21:10:01,488 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2673 conditions, 1316 events. 611/1316 cut-off events. For 589/797 co-relation queries the response was YES. Maximal size of possible extension queue 83. Compared 6975 event pairs, 78 based on Foata normal form. 208/1352 useless extension candidates. Maximal degree in co-relation 2665. Up to 256 conditions per place. [2022-11-02 21:10:01,496 INFO L137 encePairwiseOnDemand]: 200/212 looper letters, 88 selfloop transitions, 19 changer transitions 0/234 dead transitions. [2022-11-02 21:10:01,496 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 200 places, 234 transitions, 782 flow [2022-11-02 21:10:01,497 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-02 21:10:01,497 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2022-11-02 21:10:01,500 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 1717 transitions. [2022-11-02 21:10:01,501 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.7362778730703259 [2022-11-02 21:10:01,501 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 1717 transitions. [2022-11-02 21:10:01,501 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 1717 transitions. [2022-11-02 21:10:01,502 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 21:10:01,503 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 1717 transitions. [2022-11-02 21:10:01,506 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 156.0909090909091) internal successors, (1717), 11 states have internal predecessors, (1717), 0 states have call successors, (0), 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 21:10:01,510 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 212.0) internal successors, (2544), 12 states have internal predecessors, (2544), 0 states have call successors, (0), 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 21:10:01,512 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 212.0) internal successors, (2544), 12 states have internal predecessors, (2544), 0 states have call successors, (0), 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 21:10:01,512 INFO L175 Difference]: Start difference. First operand has 190 places, 183 transitions, 417 flow. Second operand 11 states and 1717 transitions. [2022-11-02 21:10:01,512 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 200 places, 234 transitions, 782 flow [2022-11-02 21:10:01,515 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 196 places, 234 transitions, 769 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-11-02 21:10:01,518 INFO L231 Difference]: Finished difference. Result has 202 places, 195 transitions, 516 flow [2022-11-02 21:10:01,519 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=212, PETRI_DIFFERENCE_MINUEND_FLOW=409, PETRI_DIFFERENCE_MINUEND_PLACES=186, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=183, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=172, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=516, PETRI_PLACES=202, PETRI_TRANSITIONS=195} [2022-11-02 21:10:01,519 INFO L287 CegarLoopForPetriNet]: 191 programPoint places, 11 predicate places. [2022-11-02 21:10:01,520 INFO L495 AbstractCegarLoop]: Abstraction has has 202 places, 195 transitions, 516 flow [2022-11-02 21:10:01,520 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 151.66666666666666) internal successors, (1365), 9 states have internal predecessors, (1365), 0 states have call successors, (0), 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 21:10:01,521 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 21:10:01,521 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] [2022-11-02 21:10:01,561 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_267aaff3-2a66-4104-8b1f-7e5eed270379/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-02 21:10:01,740 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_267aaff3-2a66-4104-8b1f-7e5eed270379/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 21:10:01,741 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-02 21:10:01,741 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:10:01,741 INFO L85 PathProgramCache]: Analyzing trace with hash -308578904, now seen corresponding path program 2 times [2022-11-02 21:10:01,742 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:10:01,742 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1018881563] [2022-11-02 21:10:01,742 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:10:01,742 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:10:01,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:10:02,023 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-02 21:10:02,024 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:10:02,024 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1018881563] [2022-11-02 21:10:02,024 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1018881563] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 21:10:02,024 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [645034928] [2022-11-02 21:10:02,025 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-02 21:10:02,025 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 21:10:02,025 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_267aaff3-2a66-4104-8b1f-7e5eed270379/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 21:10:02,026 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_267aaff3-2a66-4104-8b1f-7e5eed270379/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 21:10:02,048 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_267aaff3-2a66-4104-8b1f-7e5eed270379/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-02 21:10:02,161 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-11-02 21:10:02,161 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-02 21:10:02,163 INFO L263 TraceCheckSpWp]: Trace formula consists of 333 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-02 21:10:02,174 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:10:02,294 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-02 21:10:02,294 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 21:10:02,295 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [645034928] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:10:02,295 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-02 21:10:02,295 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [10] total 16 [2022-11-02 21:10:02,295 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1404985946] [2022-11-02 21:10:02,295 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:10:02,296 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-02 21:10:02,296 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:10:02,297 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-02 21:10:02,297 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=207, Unknown=0, NotChecked=0, Total=240 [2022-11-02 21:10:02,299 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 136 out of 212 [2022-11-02 21:10:02,300 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 202 places, 195 transitions, 516 flow. Second operand has 8 states, 8 states have (on average 141.75) internal successors, (1134), 8 states have internal predecessors, (1134), 0 states have call successors, (0), 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 21:10:02,300 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 21:10:02,300 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 136 of 212 [2022-11-02 21:10:02,301 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 21:10:02,982 INFO L130 PetriNetUnfolder]: 1072/2205 cut-off events. [2022-11-02 21:10:02,983 INFO L131 PetriNetUnfolder]: For 1999/2379 co-relation queries the response was YES. [2022-11-02 21:10:02,991 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5512 conditions, 2205 events. 1072/2205 cut-off events. For 1999/2379 co-relation queries the response was YES. Maximal size of possible extension queue 128. Compared 13641 event pairs, 420 based on Foata normal form. 373/2499 useless extension candidates. Maximal degree in co-relation 5498. Up to 886 conditions per place. [2022-11-02 21:10:03,004 INFO L137 encePairwiseOnDemand]: 199/212 looper letters, 119 selfloop transitions, 12 changer transitions 10/267 dead transitions. [2022-11-02 21:10:03,005 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 212 places, 267 transitions, 1083 flow [2022-11-02 21:10:03,005 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-02 21:10:03,005 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2022-11-02 21:10:03,008 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 1609 transitions. [2022-11-02 21:10:03,009 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.6899656946826758 [2022-11-02 21:10:03,009 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 1609 transitions. [2022-11-02 21:10:03,009 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 1609 transitions. [2022-11-02 21:10:03,010 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 21:10:03,010 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 1609 transitions. [2022-11-02 21:10:03,014 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 146.27272727272728) internal successors, (1609), 11 states have internal predecessors, (1609), 0 states have call successors, (0), 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 21:10:03,018 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 212.0) internal successors, (2544), 12 states have internal predecessors, (2544), 0 states have call successors, (0), 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 21:10:03,019 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 212.0) internal successors, (2544), 12 states have internal predecessors, (2544), 0 states have call successors, (0), 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 21:10:03,019 INFO L175 Difference]: Start difference. First operand has 202 places, 195 transitions, 516 flow. Second operand 11 states and 1609 transitions. [2022-11-02 21:10:03,020 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 212 places, 267 transitions, 1083 flow [2022-11-02 21:10:03,030 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 208 places, 267 transitions, 1076 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-11-02 21:10:03,034 INFO L231 Difference]: Finished difference. Result has 214 places, 201 transitions, 598 flow [2022-11-02 21:10:03,035 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=212, PETRI_DIFFERENCE_MINUEND_FLOW=509, PETRI_DIFFERENCE_MINUEND_PLACES=198, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=195, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=183, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=598, PETRI_PLACES=214, PETRI_TRANSITIONS=201} [2022-11-02 21:10:03,036 INFO L287 CegarLoopForPetriNet]: 191 programPoint places, 23 predicate places. [2022-11-02 21:10:03,036 INFO L495 AbstractCegarLoop]: Abstraction has has 214 places, 201 transitions, 598 flow [2022-11-02 21:10:03,036 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 141.75) internal successors, (1134), 8 states have internal predecessors, (1134), 0 states have call successors, (0), 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 21:10:03,037 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 21:10:03,037 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] [2022-11-02 21:10:03,080 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_267aaff3-2a66-4104-8b1f-7e5eed270379/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-02 21:10:03,252 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_267aaff3-2a66-4104-8b1f-7e5eed270379/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 21:10:03,252 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-02 21:10:03,253 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:10:03,253 INFO L85 PathProgramCache]: Analyzing trace with hash 1978090510, now seen corresponding path program 3 times [2022-11-02 21:10:03,253 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:10:03,254 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [190166487] [2022-11-02 21:10:03,254 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:10:03,254 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:10:03,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:10:03,584 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-02 21:10:03,584 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:10:03,584 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [190166487] [2022-11-02 21:10:03,585 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [190166487] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 21:10:03,585 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1294686305] [2022-11-02 21:10:03,585 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-02 21:10:03,586 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 21:10:03,586 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_267aaff3-2a66-4104-8b1f-7e5eed270379/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 21:10:03,589 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_267aaff3-2a66-4104-8b1f-7e5eed270379/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 21:10:03,608 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_267aaff3-2a66-4104-8b1f-7e5eed270379/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-02 21:10:03,715 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2022-11-02 21:10:03,716 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-02 21:10:03,718 INFO L263 TraceCheckSpWp]: Trace formula consists of 333 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-02 21:10:03,721 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:10:03,857 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-02 21:10:03,857 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 21:10:03,857 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1294686305] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:10:03,858 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-02 21:10:03,858 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [10] total 16 [2022-11-02 21:10:03,858 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [6836777] [2022-11-02 21:10:03,858 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:10:03,859 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-02 21:10:03,859 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:10:03,860 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-02 21:10:03,860 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=207, Unknown=0, NotChecked=0, Total=240 [2022-11-02 21:10:03,861 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 136 out of 212 [2022-11-02 21:10:03,863 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 214 places, 201 transitions, 598 flow. Second operand has 8 states, 8 states have (on average 141.75) internal successors, (1134), 8 states have internal predecessors, (1134), 0 states have call successors, (0), 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 21:10:03,863 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 21:10:03,863 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 136 of 212 [2022-11-02 21:10:03,863 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 21:10:04,881 INFO L130 PetriNetUnfolder]: 1801/3527 cut-off events. [2022-11-02 21:10:04,881 INFO L131 PetriNetUnfolder]: For 4404/5065 co-relation queries the response was YES. [2022-11-02 21:10:04,896 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9416 conditions, 3527 events. 1801/3527 cut-off events. For 4404/5065 co-relation queries the response was YES. Maximal size of possible extension queue 205. Compared 24297 event pairs, 595 based on Foata normal form. 642/4036 useless extension candidates. Maximal degree in co-relation 9396. Up to 1317 conditions per place. [2022-11-02 21:10:04,918 INFO L137 encePairwiseOnDemand]: 201/212 looper letters, 125 selfloop transitions, 17 changer transitions 10/278 dead transitions. [2022-11-02 21:10:04,918 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 219 places, 278 transitions, 1218 flow [2022-11-02 21:10:04,919 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-02 21:10:04,919 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-11-02 21:10:04,921 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1350 transitions. [2022-11-02 21:10:04,922 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.7075471698113207 [2022-11-02 21:10:04,923 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1350 transitions. [2022-11-02 21:10:04,923 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1350 transitions. [2022-11-02 21:10:04,924 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 21:10:04,924 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1350 transitions. [2022-11-02 21:10:04,927 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 150.0) internal successors, (1350), 9 states have internal predecessors, (1350), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:10:04,930 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 212.0) internal successors, (2120), 10 states have internal predecessors, (2120), 0 states have call successors, (0), 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 21:10:04,933 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 212.0) internal successors, (2120), 10 states have internal predecessors, (2120), 0 states have call successors, (0), 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 21:10:04,933 INFO L175 Difference]: Start difference. First operand has 214 places, 201 transitions, 598 flow. Second operand 9 states and 1350 transitions. [2022-11-02 21:10:04,933 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 219 places, 278 transitions, 1218 flow [2022-11-02 21:10:04,955 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 212 places, 278 transitions, 1178 flow, removed 11 selfloop flow, removed 7 redundant places. [2022-11-02 21:10:04,959 INFO L231 Difference]: Finished difference. Result has 218 places, 211 transitions, 729 flow [2022-11-02 21:10:04,960 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=212, PETRI_DIFFERENCE_MINUEND_FLOW=579, PETRI_DIFFERENCE_MINUEND_PLACES=204, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=201, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=187, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=729, PETRI_PLACES=218, PETRI_TRANSITIONS=211} [2022-11-02 21:10:04,963 INFO L287 CegarLoopForPetriNet]: 191 programPoint places, 27 predicate places. [2022-11-02 21:10:04,963 INFO L495 AbstractCegarLoop]: Abstraction has has 218 places, 211 transitions, 729 flow [2022-11-02 21:10:04,964 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 141.75) internal successors, (1134), 8 states have internal predecessors, (1134), 0 states have call successors, (0), 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 21:10:04,964 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 21:10:04,964 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] [2022-11-02 21:10:05,004 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_267aaff3-2a66-4104-8b1f-7e5eed270379/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-02 21:10:05,180 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_267aaff3-2a66-4104-8b1f-7e5eed270379/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 21:10:05,180 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-02 21:10:05,181 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:10:05,181 INFO L85 PathProgramCache]: Analyzing trace with hash 675682568, now seen corresponding path program 4 times [2022-11-02 21:10:05,181 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:10:05,181 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1431107526] [2022-11-02 21:10:05,182 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:10:05,182 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:10:05,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:10:05,573 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-02 21:10:05,574 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:10:05,574 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1431107526] [2022-11-02 21:10:05,574 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1431107526] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 21:10:05,574 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2057349259] [2022-11-02 21:10:05,575 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-02 21:10:05,575 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 21:10:05,575 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_267aaff3-2a66-4104-8b1f-7e5eed270379/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 21:10:05,576 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_267aaff3-2a66-4104-8b1f-7e5eed270379/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 21:10:05,600 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_267aaff3-2a66-4104-8b1f-7e5eed270379/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-02 21:10:05,705 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-02 21:10:05,706 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-02 21:10:05,707 INFO L263 TraceCheckSpWp]: Trace formula consists of 310 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-02 21:10:05,711 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:10:05,937 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-02 21:10:05,938 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 21:10:06,277 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-02 21:10:06,277 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2057349259] provided 1 perfect and 1 imperfect interpolant sequences [2022-11-02 21:10:06,278 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-11-02 21:10:06,278 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [10, 9] total 20 [2022-11-02 21:10:06,278 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [748391957] [2022-11-02 21:10:06,278 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:10:06,279 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-02 21:10:06,279 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:10:06,279 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-02 21:10:06,280 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=302, Unknown=0, NotChecked=0, Total=380 [2022-11-02 21:10:06,281 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 147 out of 212 [2022-11-02 21:10:06,283 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 218 places, 211 transitions, 729 flow. Second operand has 9 states, 9 states have (on average 151.66666666666666) internal successors, (1365), 9 states have internal predecessors, (1365), 0 states have call successors, (0), 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 21:10:06,283 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 21:10:06,284 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 147 of 212 [2022-11-02 21:10:06,284 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 21:10:07,287 INFO L130 PetriNetUnfolder]: 2065/4034 cut-off events. [2022-11-02 21:10:07,287 INFO L131 PetriNetUnfolder]: For 7181/7954 co-relation queries the response was YES. [2022-11-02 21:10:07,304 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11391 conditions, 4034 events. 2065/4034 cut-off events. For 7181/7954 co-relation queries the response was YES. Maximal size of possible extension queue 233. Compared 28524 event pairs, 321 based on Foata normal form. 763/4704 useless extension candidates. Maximal degree in co-relation 11368. Up to 1032 conditions per place. [2022-11-02 21:10:07,330 INFO L137 encePairwiseOnDemand]: 200/212 looper letters, 124 selfloop transitions, 40 changer transitions 0/291 dead transitions. [2022-11-02 21:10:07,330 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 225 places, 291 transitions, 1450 flow [2022-11-02 21:10:07,331 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-02 21:10:07,331 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2022-11-02 21:10:07,334 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 1740 transitions. [2022-11-02 21:10:07,335 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.7461406518010292 [2022-11-02 21:10:07,335 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 1740 transitions. [2022-11-02 21:10:07,336 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 1740 transitions. [2022-11-02 21:10:07,337 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 21:10:07,337 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 1740 transitions. [2022-11-02 21:10:07,340 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 158.1818181818182) internal successors, (1740), 11 states have internal predecessors, (1740), 0 states have call successors, (0), 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 21:10:07,345 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 212.0) internal successors, (2544), 12 states have internal predecessors, (2544), 0 states have call successors, (0), 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 21:10:07,346 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 212.0) internal successors, (2544), 12 states have internal predecessors, (2544), 0 states have call successors, (0), 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 21:10:07,347 INFO L175 Difference]: Start difference. First operand has 218 places, 211 transitions, 729 flow. Second operand 11 states and 1740 transitions. [2022-11-02 21:10:07,347 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 225 places, 291 transitions, 1450 flow [2022-11-02 21:10:07,379 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 221 places, 291 transitions, 1424 flow, removed 12 selfloop flow, removed 4 redundant places. [2022-11-02 21:10:07,387 INFO L231 Difference]: Finished difference. Result has 226 places, 229 transitions, 1021 flow [2022-11-02 21:10:07,387 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=212, PETRI_DIFFERENCE_MINUEND_FLOW=715, PETRI_DIFFERENCE_MINUEND_PLACES=211, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=211, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=182, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1021, PETRI_PLACES=226, PETRI_TRANSITIONS=229} [2022-11-02 21:10:07,388 INFO L287 CegarLoopForPetriNet]: 191 programPoint places, 35 predicate places. [2022-11-02 21:10:07,388 INFO L495 AbstractCegarLoop]: Abstraction has has 226 places, 229 transitions, 1021 flow [2022-11-02 21:10:07,389 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 151.66666666666666) internal successors, (1365), 9 states have internal predecessors, (1365), 0 states have call successors, (0), 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 21:10:07,389 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 21:10:07,389 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] [2022-11-02 21:10:07,424 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_267aaff3-2a66-4104-8b1f-7e5eed270379/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-11-02 21:10:07,604 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_267aaff3-2a66-4104-8b1f-7e5eed270379/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2022-11-02 21:10:07,604 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-02 21:10:07,605 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:10:07,605 INFO L85 PathProgramCache]: Analyzing trace with hash -584001874, now seen corresponding path program 5 times [2022-11-02 21:10:07,605 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:10:07,605 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1052635986] [2022-11-02 21:10:07,606 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:10:07,606 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:10:07,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:10:07,927 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-02 21:10:07,927 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:10:07,927 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1052635986] [2022-11-02 21:10:07,929 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1052635986] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 21:10:07,929 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [147255642] [2022-11-02 21:10:07,929 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-11-02 21:10:07,932 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 21:10:07,932 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_267aaff3-2a66-4104-8b1f-7e5eed270379/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 21:10:07,934 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_267aaff3-2a66-4104-8b1f-7e5eed270379/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 21:10:07,958 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_267aaff3-2a66-4104-8b1f-7e5eed270379/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-02 21:10:08,085 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-02 21:10:08,085 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-02 21:10:08,087 INFO L263 TraceCheckSpWp]: Trace formula consists of 372 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-02 21:10:08,090 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:10:08,249 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-02 21:10:08,249 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 21:10:08,352 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-02 21:10:08,352 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [147255642] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 21:10:08,353 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-02 21:10:08,353 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 7, 7] total 16 [2022-11-02 21:10:08,353 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1215430174] [2022-11-02 21:10:08,353 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-02 21:10:08,354 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-11-02 21:10:08,354 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:10:08,355 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-11-02 21:10:08,355 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=195, Unknown=0, NotChecked=0, Total=240 [2022-11-02 21:10:08,359 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 142 out of 212 [2022-11-02 21:10:08,362 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 226 places, 229 transitions, 1021 flow. Second operand has 16 states, 16 states have (on average 147.5) internal successors, (2360), 16 states have internal predecessors, (2360), 0 states have call successors, (0), 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 21:10:08,362 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 21:10:08,362 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 142 of 212 [2022-11-02 21:10:08,363 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 21:10:12,400 INFO L130 PetriNetUnfolder]: 8296/15170 cut-off events. [2022-11-02 21:10:12,400 INFO L131 PetriNetUnfolder]: For 39699/39720 co-relation queries the response was YES. [2022-11-02 21:10:12,500 INFO L83 FinitePrefix]: Finished finitePrefix Result has 47465 conditions, 15170 events. 8296/15170 cut-off events. For 39699/39720 co-relation queries the response was YES. Maximal size of possible extension queue 556. Compared 121529 event pairs, 519 based on Foata normal form. 28/15169 useless extension candidates. Maximal degree in co-relation 47439. Up to 1654 conditions per place. [2022-11-02 21:10:12,591 INFO L137 encePairwiseOnDemand]: 191/212 looper letters, 284 selfloop transitions, 175 changer transitions 0/581 dead transitions. [2022-11-02 21:10:12,592 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 252 places, 581 transitions, 3947 flow [2022-11-02 21:10:12,592 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2022-11-02 21:10:12,592 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2022-11-02 21:10:12,600 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 4195 transitions. [2022-11-02 21:10:12,602 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.732879105520615 [2022-11-02 21:10:12,603 INFO L72 ComplementDD]: Start complementDD. Operand 27 states and 4195 transitions. [2022-11-02 21:10:12,603 INFO L73 IsDeterministic]: Start isDeterministic. Operand 27 states and 4195 transitions. [2022-11-02 21:10:12,605 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 21:10:12,605 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 27 states and 4195 transitions. [2022-11-02 21:10:12,614 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 28 states, 27 states have (on average 155.37037037037038) internal successors, (4195), 27 states have internal predecessors, (4195), 0 states have call successors, (0), 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 21:10:12,625 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 28 states, 28 states have (on average 212.0) internal successors, (5936), 28 states have internal predecessors, (5936), 0 states have call successors, (0), 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 21:10:12,643 INFO L81 ComplementDD]: Finished complementDD. Result has 28 states, 28 states have (on average 212.0) internal successors, (5936), 28 states have internal predecessors, (5936), 0 states have call successors, (0), 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 21:10:12,643 INFO L175 Difference]: Start difference. First operand has 226 places, 229 transitions, 1021 flow. Second operand 27 states and 4195 transitions. [2022-11-02 21:10:12,643 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 252 places, 581 transitions, 3947 flow [2022-11-02 21:10:13,119 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 248 places, 581 transitions, 3892 flow, removed 24 selfloop flow, removed 4 redundant places. [2022-11-02 21:10:13,130 INFO L231 Difference]: Finished difference. Result has 265 places, 359 transitions, 2904 flow [2022-11-02 21:10:13,130 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=212, PETRI_DIFFERENCE_MINUEND_FLOW=998, PETRI_DIFFERENCE_MINUEND_PLACES=222, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=229, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=49, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=172, PETRI_DIFFERENCE_SUBTRAHEND_STATES=27, PETRI_FLOW=2904, PETRI_PLACES=265, PETRI_TRANSITIONS=359} [2022-11-02 21:10:13,134 INFO L287 CegarLoopForPetriNet]: 191 programPoint places, 74 predicate places. [2022-11-02 21:10:13,135 INFO L495 AbstractCegarLoop]: Abstraction has has 265 places, 359 transitions, 2904 flow [2022-11-02 21:10:13,136 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 147.5) internal successors, (2360), 16 states have internal predecessors, (2360), 0 states have call successors, (0), 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 21:10:13,136 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 21:10:13,136 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] [2022-11-02 21:10:13,167 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_267aaff3-2a66-4104-8b1f-7e5eed270379/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2022-11-02 21:10:13,360 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_267aaff3-2a66-4104-8b1f-7e5eed270379/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 21:10:13,361 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-02 21:10:13,361 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:10:13,361 INFO L85 PathProgramCache]: Analyzing trace with hash -1646812198, now seen corresponding path program 6 times [2022-11-02 21:10:13,361 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:10:13,361 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1349239950] [2022-11-02 21:10:13,361 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:10:13,361 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:10:13,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:10:13,668 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-02 21:10:13,668 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:10:13,668 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1349239950] [2022-11-02 21:10:13,668 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1349239950] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 21:10:13,668 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2075581415] [2022-11-02 21:10:13,669 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-11-02 21:10:13,669 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 21:10:13,669 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_267aaff3-2a66-4104-8b1f-7e5eed270379/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 21:10:13,670 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_267aaff3-2a66-4104-8b1f-7e5eed270379/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 21:10:13,692 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_267aaff3-2a66-4104-8b1f-7e5eed270379/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-11-02 21:10:14,032 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2022-11-02 21:10:14,033 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-02 21:10:14,035 INFO L263 TraceCheckSpWp]: Trace formula consists of 372 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-02 21:10:14,037 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:10:14,266 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-02 21:10:14,266 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 21:10:14,514 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-02 21:10:14,514 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2075581415] provided 1 perfect and 1 imperfect interpolant sequences [2022-11-02 21:10:14,514 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-11-02 21:10:14,515 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [10, 9] total 19 [2022-11-02 21:10:14,517 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [179674147] [2022-11-02 21:10:14,517 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:10:14,518 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-02 21:10:14,518 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:10:14,518 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-02 21:10:14,519 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=264, Unknown=0, NotChecked=0, Total=342 [2022-11-02 21:10:14,520 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 147 out of 212 [2022-11-02 21:10:14,522 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 265 places, 359 transitions, 2904 flow. Second operand has 9 states, 9 states have (on average 151.66666666666666) internal successors, (1365), 9 states have internal predecessors, (1365), 0 states have call successors, (0), 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 21:10:14,522 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 21:10:14,522 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 147 of 212 [2022-11-02 21:10:14,522 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 21:10:16,741 INFO L130 PetriNetUnfolder]: 3843/7858 cut-off events. [2022-11-02 21:10:16,741 INFO L131 PetriNetUnfolder]: For 41211/41534 co-relation queries the response was YES. [2022-11-02 21:10:16,834 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29495 conditions, 7858 events. 3843/7858 cut-off events. For 41211/41534 co-relation queries the response was YES. Maximal size of possible extension queue 368. Compared 64213 event pairs, 577 based on Foata normal form. 61/7824 useless extension candidates. Maximal degree in co-relation 29452. Up to 3599 conditions per place. [2022-11-02 21:10:17,069 INFO L137 encePairwiseOnDemand]: 199/212 looper letters, 146 selfloop transitions, 118 changer transitions 0/410 dead transitions. [2022-11-02 21:10:17,069 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 274 places, 410 transitions, 3785 flow [2022-11-02 21:10:17,080 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-02 21:10:17,080 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-11-02 21:10:17,085 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1573 transitions. [2022-11-02 21:10:17,086 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.7419811320754717 [2022-11-02 21:10:17,086 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1573 transitions. [2022-11-02 21:10:17,086 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1573 transitions. [2022-11-02 21:10:17,088 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 21:10:17,089 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1573 transitions. [2022-11-02 21:10:17,094 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 157.3) internal successors, (1573), 10 states have internal predecessors, (1573), 0 states have call successors, (0), 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 21:10:17,099 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 212.0) internal successors, (2332), 11 states have internal predecessors, (2332), 0 states have call successors, (0), 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 21:10:17,100 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 212.0) internal successors, (2332), 11 states have internal predecessors, (2332), 0 states have call successors, (0), 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 21:10:17,100 INFO L175 Difference]: Start difference. First operand has 265 places, 359 transitions, 2904 flow. Second operand 10 states and 1573 transitions. [2022-11-02 21:10:17,101 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 274 places, 410 transitions, 3785 flow [2022-11-02 21:10:17,610 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 268 places, 410 transitions, 3660 flow, removed 56 selfloop flow, removed 6 redundant places. [2022-11-02 21:10:17,617 INFO L231 Difference]: Finished difference. Result has 271 places, 369 transitions, 3333 flow [2022-11-02 21:10:17,618 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=212, PETRI_DIFFERENCE_MINUEND_FLOW=2799, PETRI_DIFFERENCE_MINUEND_PLACES=259, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=359, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=108, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=243, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3333, PETRI_PLACES=271, PETRI_TRANSITIONS=369} [2022-11-02 21:10:17,619 INFO L287 CegarLoopForPetriNet]: 191 programPoint places, 80 predicate places. [2022-11-02 21:10:17,619 INFO L495 AbstractCegarLoop]: Abstraction has has 271 places, 369 transitions, 3333 flow [2022-11-02 21:10:17,619 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 151.66666666666666) internal successors, (1365), 9 states have internal predecessors, (1365), 0 states have call successors, (0), 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 21:10:17,620 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 21:10:17,620 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] [2022-11-02 21:10:17,658 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_267aaff3-2a66-4104-8b1f-7e5eed270379/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-11-02 21:10:17,836 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_267aaff3-2a66-4104-8b1f-7e5eed270379/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 21:10:17,836 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-02 21:10:17,837 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:10:17,837 INFO L85 PathProgramCache]: Analyzing trace with hash 1576926614, now seen corresponding path program 1 times [2022-11-02 21:10:17,837 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:10:17,837 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1917580204] [2022-11-02 21:10:17,837 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:10:17,837 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:10:18,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:10:22,144 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-02 21:10:22,144 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:10:22,144 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1917580204] [2022-11-02 21:10:22,144 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1917580204] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 21:10:22,144 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [173069990] [2022-11-02 21:10:22,145 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:10:22,145 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 21:10:22,145 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_267aaff3-2a66-4104-8b1f-7e5eed270379/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 21:10:22,146 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_267aaff3-2a66-4104-8b1f-7e5eed270379/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 21:10:22,168 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_267aaff3-2a66-4104-8b1f-7e5eed270379/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-11-02 21:10:22,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:10:22,290 INFO L263 TraceCheckSpWp]: Trace formula consists of 385 conjuncts, 63 conjunts are in the unsatisfiable core [2022-11-02 21:10:22,296 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:10:22,412 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-02 21:10:23,248 INFO L356 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-11-02 21:10:23,249 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2022-11-02 21:10:23,975 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 23 [2022-11-02 21:10:25,641 INFO L356 Elim1Store]: treesize reduction 18, result has 28.0 percent of original size [2022-11-02 21:10:25,641 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 2 case distinctions, treesize of input 42 treesize of output 16 [2022-11-02 21:10:25,655 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-02 21:10:25,655 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 21:10:28,626 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-02 21:10:28,627 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 102 treesize of output 98 [2022-11-02 21:10:28,683 INFO L356 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2022-11-02 21:10:28,684 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 57 treesize of output 33 [2022-11-02 21:10:28,689 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 20 [2022-11-02 21:10:28,699 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 21:10:28,700 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 16 [2022-11-02 21:10:28,704 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 21:10:28,711 INFO L356 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2022-11-02 21:10:28,712 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 1 [2022-11-02 21:10:28,735 INFO L356 Elim1Store]: treesize reduction 22, result has 40.5 percent of original size [2022-11-02 21:10:28,735 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 79 treesize of output 57 [2022-11-02 21:10:28,743 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 21:10:28,747 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 21:10:28,748 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2022-11-02 21:10:28,756 INFO L356 Elim1Store]: treesize reduction 36, result has 2.7 percent of original size [2022-11-02 21:10:28,757 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 48 treesize of output 1 [2022-11-02 21:10:28,765 INFO L356 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2022-11-02 21:10:28,765 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 35 treesize of output 1 [2022-11-02 21:10:32,328 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-02 21:10:32,328 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [173069990] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 21:10:32,328 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-02 21:10:32,329 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [39, 32, 25] total 84 [2022-11-02 21:10:32,329 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [285622523] [2022-11-02 21:10:32,329 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-02 21:10:32,330 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 84 states [2022-11-02 21:10:32,330 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:10:32,331 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 84 interpolants. [2022-11-02 21:10:32,333 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=712, Invalid=6256, Unknown=4, NotChecked=0, Total=6972 [2022-11-02 21:10:32,340 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 69 out of 212 [2022-11-02 21:10:32,346 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 271 places, 369 transitions, 3333 flow. Second operand has 84 states, 84 states have (on average 72.46428571428571) internal successors, (6087), 84 states have internal predecessors, (6087), 0 states have call successors, (0), 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 21:10:32,346 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 21:10:32,346 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 69 of 212 [2022-11-02 21:10:32,346 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 21:11:07,796 WARN L234 SmtUtils]: Spent 6.42s on a formula simplification. DAG size of input: 37 DAG size of output: 37 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate)