./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/weaver/unroll-5.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 791161d1 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/weaver/unroll-5.wvr.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --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 c8ce32899aa465c1eaa89b234122d94aaf792bb347295ccb743670e04bba6b8e --- Real Ultimate output --- This is Ultimate 0.2.2-?-791161d [2022-07-22 21:59:48,090 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-22 21:59:48,095 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-22 21:59:48,151 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-22 21:59:48,152 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-22 21:59:48,153 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-22 21:59:48,158 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-22 21:59:48,164 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-22 21:59:48,167 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-22 21:59:48,172 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-22 21:59:48,174 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-22 21:59:48,176 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-22 21:59:48,177 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-22 21:59:48,179 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-22 21:59:48,181 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-22 21:59:48,182 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-22 21:59:48,183 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-22 21:59:48,185 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-22 21:59:48,189 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-22 21:59:48,194 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-22 21:59:48,197 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-22 21:59:48,198 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-22 21:59:48,199 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-22 21:59:48,200 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-22 21:59:48,202 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-22 21:59:48,206 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-22 21:59:48,207 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-22 21:59:48,208 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-22 21:59:48,209 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-22 21:59:48,210 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-22 21:59:48,211 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-22 21:59:48,211 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-22 21:59:48,213 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-22 21:59:48,214 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-22 21:59:48,214 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-22 21:59:48,215 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-22 21:59:48,216 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-22 21:59:48,217 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-22 21:59:48,217 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-22 21:59:48,217 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-22 21:59:48,218 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-22 21:59:48,220 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-22 21:59:48,220 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-22 21:59:48,256 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-22 21:59:48,259 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-22 21:59:48,259 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-22 21:59:48,260 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-22 21:59:48,260 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-22 21:59:48,261 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-22 21:59:48,261 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-22 21:59:48,261 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-22 21:59:48,262 INFO L138 SettingsManager]: * Use SBE=true [2022-07-22 21:59:48,263 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-22 21:59:48,263 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-22 21:59:48,263 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-22 21:59:48,263 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-22 21:59:48,264 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-22 21:59:48,264 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-22 21:59:48,264 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-22 21:59:48,264 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-22 21:59:48,264 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-22 21:59:48,265 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-22 21:59:48,265 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-22 21:59:48,265 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-22 21:59:48,265 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-22 21:59:48,266 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-22 21:59:48,266 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-22 21:59:48,266 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-22 21:59:48,267 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-22 21:59:48,267 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-22 21:59:48,267 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-22 21:59:48,267 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-22 21:59:48,268 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-22 21:59:48,268 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-22 21:59:48,268 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-22 21:59:48,268 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-22 21:59:48,268 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:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c8ce32899aa465c1eaa89b234122d94aaf792bb347295ccb743670e04bba6b8e [2022-07-22 21:59:48,514 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-22 21:59:48,541 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-22 21:59:48,543 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-22 21:59:48,545 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-22 21:59:48,545 INFO L275 PluginConnector]: CDTParser initialized [2022-07-22 21:59:48,547 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/unroll-5.wvr.c [2022-07-22 21:59:48,605 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bb2ae288e/7f8ce27427a8453fb6a524cd21187125/FLAG3e49c586d [2022-07-22 21:59:49,028 INFO L306 CDTParser]: Found 1 translation units. [2022-07-22 21:59:49,029 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/unroll-5.wvr.c [2022-07-22 21:59:49,035 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bb2ae288e/7f8ce27427a8453fb6a524cd21187125/FLAG3e49c586d [2022-07-22 21:59:49,445 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bb2ae288e/7f8ce27427a8453fb6a524cd21187125 [2022-07-22 21:59:49,447 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-22 21:59:49,448 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-22 21:59:49,452 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-22 21:59:49,452 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-22 21:59:49,455 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-22 21:59:49,456 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.07 09:59:49" (1/1) ... [2022-07-22 21:59:49,457 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@472fbc24 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 09:59:49, skipping insertion in model container [2022-07-22 21:59:49,457 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.07 09:59:49" (1/1) ... [2022-07-22 21:59:49,463 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-22 21:59:49,480 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-22 21:59:49,667 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/unroll-5.wvr.c[2644,2657] [2022-07-22 21:59:49,686 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-22 21:59:49,699 INFO L203 MainTranslator]: Completed pre-run [2022-07-22 21:59:49,738 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/unroll-5.wvr.c[2644,2657] [2022-07-22 21:59:49,749 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-22 21:59:49,764 INFO L208 MainTranslator]: Completed translation [2022-07-22 21:59:49,766 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 09:59:49 WrapperNode [2022-07-22 21:59:49,766 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-22 21:59:49,768 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-22 21:59:49,768 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-22 21:59:49,768 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-22 21:59:49,775 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 09:59:49" (1/1) ... [2022-07-22 21:59:49,796 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 09:59:49" (1/1) ... [2022-07-22 21:59:49,830 INFO L137 Inliner]: procedures = 24, calls = 38, calls flagged for inlining = 14, calls inlined = 14, statements flattened = 164 [2022-07-22 21:59:49,831 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-22 21:59:49,832 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-22 21:59:49,832 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-22 21:59:49,832 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-22 21:59:49,839 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 09:59:49" (1/1) ... [2022-07-22 21:59:49,839 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 09:59:49" (1/1) ... [2022-07-22 21:59:49,841 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 09:59:49" (1/1) ... [2022-07-22 21:59:49,841 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 09:59:49" (1/1) ... [2022-07-22 21:59:49,848 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 09:59:49" (1/1) ... [2022-07-22 21:59:49,852 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 09:59:49" (1/1) ... [2022-07-22 21:59:49,865 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 09:59:49" (1/1) ... [2022-07-22 21:59:49,868 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-22 21:59:49,884 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-22 21:59:49,884 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-22 21:59:49,884 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-22 21:59:49,885 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 09:59:49" (1/1) ... [2022-07-22 21:59:49,891 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-22 21:59:49,902 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 21:59:49,915 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-07-22 21:59:49,947 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-07-22 21:59:49,962 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-22 21:59:49,963 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-07-22 21:59:49,963 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-07-22 21:59:49,963 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-07-22 21:59:49,963 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-07-22 21:59:49,964 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-22 21:59:49,964 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-07-22 21:59:49,964 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-07-22 21:59:49,964 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-07-22 21:59:49,965 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-22 21:59:49,965 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-22 21:59:49,965 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-07-22 21:59:49,965 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-07-22 21:59:49,967 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-07-22 21:59:50,088 INFO L234 CfgBuilder]: Building ICFG [2022-07-22 21:59:50,095 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-22 21:59:50,338 INFO L275 CfgBuilder]: Performing block encoding [2022-07-22 21:59:50,348 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-22 21:59:50,348 INFO L299 CfgBuilder]: Removed 3 assume(true) statements. [2022-07-22 21:59:50,351 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.07 09:59:50 BoogieIcfgContainer [2022-07-22 21:59:50,351 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-22 21:59:50,353 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-22 21:59:50,353 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-22 21:59:50,356 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-22 21:59:50,356 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.07 09:59:49" (1/3) ... [2022-07-22 21:59:50,357 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@337d14af and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.07 09:59:50, skipping insertion in model container [2022-07-22 21:59:50,357 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 09:59:49" (2/3) ... [2022-07-22 21:59:50,358 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@337d14af and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.07 09:59:50, skipping insertion in model container [2022-07-22 21:59:50,358 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.07 09:59:50" (3/3) ... [2022-07-22 21:59:50,359 INFO L111 eAbstractionObserver]: Analyzing ICFG unroll-5.wvr.c [2022-07-22 21:59:50,365 WARN L143 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-07-22 21:59:50,374 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-22 21:59:50,375 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-22 21:59:50,375 INFO L509 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-07-22 21:59:50,513 INFO L135 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-07-22 21:59:50,572 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 203 places, 213 transitions, 442 flow [2022-07-22 21:59:50,639 INFO L129 PetriNetUnfolder]: 17/211 cut-off events. [2022-07-22 21:59:50,639 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-07-22 21:59:50,644 INFO L84 FinitePrefix]: Finished finitePrefix Result has 220 conditions, 211 events. 17/211 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 180 event pairs, 0 based on Foata normal form. 0/193 useless extension candidates. Maximal degree in co-relation 110. Up to 2 conditions per place. [2022-07-22 21:59:50,644 INFO L82 GeneralOperation]: Start removeDead. Operand has 203 places, 213 transitions, 442 flow [2022-07-22 21:59:50,654 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 192 places, 202 transitions, 416 flow [2022-07-22 21:59:50,666 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-22 21:59:50,680 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=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@52f33c2a, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@1dc5374 [2022-07-22 21:59:50,680 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2022-07-22 21:59:50,731 INFO L129 PetriNetUnfolder]: 13/155 cut-off events. [2022-07-22 21:59:50,733 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-07-22 21:59:50,733 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-22 21:59:50,734 INFO L200 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] [2022-07-22 21:59:50,734 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-22 21:59:50,739 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 21:59:50,739 INFO L85 PathProgramCache]: Analyzing trace with hash 720137412, now seen corresponding path program 1 times [2022-07-22 21:59:50,746 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 21:59:50,746 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1705062068] [2022-07-22 21:59:50,746 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 21:59:50,747 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 21:59:50,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 21:59:51,068 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 21:59:51,070 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 21:59:51,070 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1705062068] [2022-07-22 21:59:51,071 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1705062068] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 21:59:51,071 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 21:59:51,071 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-22 21:59:51,073 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1297175146] [2022-07-22 21:59:51,075 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 21:59:51,084 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-07-22 21:59:51,085 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 21:59:51,116 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-07-22 21:59:51,119 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-07-22 21:59:51,124 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 194 out of 213 [2022-07-22 21:59:51,132 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 192 places, 202 transitions, 416 flow. Second operand has 2 states, 2 states have (on average 196.5) internal successors, (393), 2 states have internal predecessors, (393), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:59:51,133 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-22 21:59:51,133 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 194 of 213 [2022-07-22 21:59:51,134 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-22 21:59:51,226 INFO L129 PetriNetUnfolder]: 3/188 cut-off events. [2022-07-22 21:59:51,226 INFO L130 PetriNetUnfolder]: For 8/8 co-relation queries the response was YES. [2022-07-22 21:59:51,229 INFO L84 FinitePrefix]: Finished finitePrefix Result has 202 conditions, 188 events. 3/188 cut-off events. For 8/8 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 143 event pairs, 0 based on Foata normal form. 17/191 useless extension candidates. Maximal degree in co-relation 104. Up to 5 conditions per place. [2022-07-22 21:59:51,231 INFO L132 encePairwiseOnDemand]: 199/213 looper letters, 4 selfloop transitions, 0 changer transitions 5/188 dead transitions. [2022-07-22 21:59:51,232 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 193 places, 188 transitions, 396 flow [2022-07-22 21:59:51,233 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-07-22 21:59:51,237 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2022-07-22 21:59:51,248 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 406 transitions. [2022-07-22 21:59:51,253 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.9530516431924883 [2022-07-22 21:59:51,254 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 406 transitions. [2022-07-22 21:59:51,254 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 406 transitions. [2022-07-22 21:59:51,260 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-22 21:59:51,263 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 406 transitions. [2022-07-22 21:59:51,270 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 203.0) internal successors, (406), 2 states have internal predecessors, (406), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:59:51,288 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 213.0) internal successors, (639), 3 states have internal predecessors, (639), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:59:51,289 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 213.0) internal successors, (639), 3 states have internal predecessors, (639), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:59:51,290 INFO L186 Difference]: Start difference. First operand has 192 places, 202 transitions, 416 flow. Second operand 2 states and 406 transitions. [2022-07-22 21:59:51,291 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 193 places, 188 transitions, 396 flow [2022-07-22 21:59:51,297 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 189 places, 188 transitions, 388 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-07-22 21:59:51,302 INFO L242 Difference]: Finished difference. Result has 189 places, 183 transitions, 370 flow [2022-07-22 21:59:51,304 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=213, PETRI_DIFFERENCE_MINUEND_FLOW=380, PETRI_DIFFERENCE_MINUEND_PLACES=188, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=188, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=188, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=370, PETRI_PLACES=189, PETRI_TRANSITIONS=183} [2022-07-22 21:59:51,312 INFO L279 CegarLoopForPetriNet]: 192 programPoint places, -3 predicate places. [2022-07-22 21:59:51,312 INFO L495 AbstractCegarLoop]: Abstraction has has 189 places, 183 transitions, 370 flow [2022-07-22 21:59:51,313 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 196.5) internal successors, (393), 2 states have internal predecessors, (393), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:59:51,314 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-22 21:59:51,314 INFO L200 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] [2022-07-22 21:59:51,314 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-22 21:59:51,315 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-22 21:59:51,317 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 21:59:51,317 INFO L85 PathProgramCache]: Analyzing trace with hash -1342985173, now seen corresponding path program 1 times [2022-07-22 21:59:51,317 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 21:59:51,318 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1710989676] [2022-07-22 21:59:51,318 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 21:59:51,318 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 21:59:51,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 21:59:51,663 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 21:59:51,663 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 21:59:51,664 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1710989676] [2022-07-22 21:59:51,664 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1710989676] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 21:59:51,665 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 21:59:51,666 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-22 21:59:51,666 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1129613559] [2022-07-22 21:59:51,667 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 21:59:51,670 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-22 21:59:51,670 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 21:59:51,671 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-22 21:59:51,671 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-22 21:59:51,674 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 149 out of 213 [2022-07-22 21:59:51,676 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 189 places, 183 transitions, 370 flow. Second operand has 6 states, 6 states have (on average 153.33333333333334) internal successors, (920), 6 states have internal predecessors, (920), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:59:51,676 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-22 21:59:51,676 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 149 of 213 [2022-07-22 21:59:51,676 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-22 21:59:51,985 INFO L129 PetriNetUnfolder]: 145/908 cut-off events. [2022-07-22 21:59:51,986 INFO L130 PetriNetUnfolder]: For 38/38 co-relation queries the response was YES. [2022-07-22 21:59:51,988 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1236 conditions, 908 events. 145/908 cut-off events. For 38/38 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 5127 event pairs, 47 based on Foata normal form. 1/844 useless extension candidates. Maximal degree in co-relation 1233. Up to 160 conditions per place. [2022-07-22 21:59:51,992 INFO L132 encePairwiseOnDemand]: 206/213 looper letters, 71 selfloop transitions, 5 changer transitions 4/219 dead transitions. [2022-07-22 21:59:51,992 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 189 places, 219 transitions, 607 flow [2022-07-22 21:59:51,993 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-22 21:59:51,993 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-07-22 21:59:51,995 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 975 transitions. [2022-07-22 21:59:51,995 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7629107981220657 [2022-07-22 21:59:51,996 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 975 transitions. [2022-07-22 21:59:51,996 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 975 transitions. [2022-07-22 21:59:51,996 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-22 21:59:51,996 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 975 transitions. [2022-07-22 21:59:51,999 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 162.5) internal successors, (975), 6 states have internal predecessors, (975), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:59:52,003 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 213.0) internal successors, (1491), 7 states have internal predecessors, (1491), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:59:52,004 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 213.0) internal successors, (1491), 7 states have internal predecessors, (1491), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:59:52,005 INFO L186 Difference]: Start difference. First operand has 189 places, 183 transitions, 370 flow. Second operand 6 states and 975 transitions. [2022-07-22 21:59:52,005 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 189 places, 219 transitions, 607 flow [2022-07-22 21:59:52,008 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 189 places, 219 transitions, 607 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-07-22 21:59:52,014 INFO L242 Difference]: Finished difference. Result has 192 places, 186 transitions, 399 flow [2022-07-22 21:59:52,015 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=213, PETRI_DIFFERENCE_MINUEND_FLOW=370, PETRI_DIFFERENCE_MINUEND_PLACES=184, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=183, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=179, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=399, PETRI_PLACES=192, PETRI_TRANSITIONS=186} [2022-07-22 21:59:52,016 INFO L279 CegarLoopForPetriNet]: 192 programPoint places, 0 predicate places. [2022-07-22 21:59:52,016 INFO L495 AbstractCegarLoop]: Abstraction has has 192 places, 186 transitions, 399 flow [2022-07-22 21:59:52,017 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 153.33333333333334) internal successors, (920), 6 states have internal predecessors, (920), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:59:52,017 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-22 21:59:52,018 INFO L200 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] [2022-07-22 21:59:52,018 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-22 21:59:52,018 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-22 21:59:52,020 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 21:59:52,020 INFO L85 PathProgramCache]: Analyzing trace with hash 390201706, now seen corresponding path program 1 times [2022-07-22 21:59:52,021 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 21:59:52,021 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1088677520] [2022-07-22 21:59:52,021 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 21:59:52,021 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 21:59:52,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 21:59:52,212 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 21:59:52,212 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 21:59:52,213 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1088677520] [2022-07-22 21:59:52,213 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1088677520] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 21:59:52,213 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1917115092] [2022-07-22 21:59:52,214 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 21:59:52,214 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 21:59:52,214 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 21:59:52,216 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-22 21:59:52,218 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-07-22 21:59:52,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 21:59:52,310 INFO L263 TraceCheckSpWp]: Trace formula consists of 233 conjuncts, 6 conjunts are in the unsatisfiable core [2022-07-22 21:59:52,317 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 21:59:52,435 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 21:59:52,435 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-22 21:59:52,516 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 21:59:52,516 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1917115092] provided 1 perfect and 1 imperfect interpolant sequences [2022-07-22 21:59:52,516 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-07-22 21:59:52,516 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6, 5] total 7 [2022-07-22 21:59:52,517 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1870091082] [2022-07-22 21:59:52,517 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 21:59:52,517 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-22 21:59:52,517 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 21:59:52,518 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-22 21:59:52,518 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2022-07-22 21:59:52,519 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 176 out of 213 [2022-07-22 21:59:52,520 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 192 places, 186 transitions, 399 flow. Second operand has 4 states, 4 states have (on average 178.75) internal successors, (715), 4 states have internal predecessors, (715), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:59:52,520 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-22 21:59:52,520 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 176 of 213 [2022-07-22 21:59:52,520 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-22 21:59:52,667 INFO L129 PetriNetUnfolder]: 129/938 cut-off events. [2022-07-22 21:59:52,667 INFO L130 PetriNetUnfolder]: For 34/34 co-relation queries the response was YES. [2022-07-22 21:59:52,670 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1233 conditions, 938 events. 129/938 cut-off events. For 34/34 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 4925 event pairs, 8 based on Foata normal form. 0/826 useless extension candidates. Maximal degree in co-relation 1226. Up to 175 conditions per place. [2022-07-22 21:59:52,673 INFO L132 encePairwiseOnDemand]: 208/213 looper letters, 28 selfloop transitions, 5 changer transitions 1/198 dead transitions. [2022-07-22 21:59:52,674 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 193 places, 198 transitions, 495 flow [2022-07-22 21:59:52,674 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-22 21:59:52,674 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-07-22 21:59:52,676 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 739 transitions. [2022-07-22 21:59:52,676 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8673708920187794 [2022-07-22 21:59:52,676 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 739 transitions. [2022-07-22 21:59:52,676 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 739 transitions. [2022-07-22 21:59:52,677 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-22 21:59:52,677 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 739 transitions. [2022-07-22 21:59:52,679 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 184.75) internal successors, (739), 4 states have internal predecessors, (739), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:59:52,680 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 213.0) internal successors, (1065), 5 states have internal predecessors, (1065), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:59:52,681 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 213.0) internal successors, (1065), 5 states have internal predecessors, (1065), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:59:52,681 INFO L186 Difference]: Start difference. First operand has 192 places, 186 transitions, 399 flow. Second operand 4 states and 739 transitions. [2022-07-22 21:59:52,681 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 193 places, 198 transitions, 495 flow [2022-07-22 21:59:52,684 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 191 places, 198 transitions, 491 flow, removed 2 selfloop flow, removed 2 redundant places. [2022-07-22 21:59:52,689 INFO L242 Difference]: Finished difference. Result has 194 places, 190 transitions, 431 flow [2022-07-22 21:59:52,690 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=213, PETRI_DIFFERENCE_MINUEND_FLOW=395, PETRI_DIFFERENCE_MINUEND_PLACES=188, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=186, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=182, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=431, PETRI_PLACES=194, PETRI_TRANSITIONS=190} [2022-07-22 21:59:52,692 INFO L279 CegarLoopForPetriNet]: 192 programPoint places, 2 predicate places. [2022-07-22 21:59:52,692 INFO L495 AbstractCegarLoop]: Abstraction has has 194 places, 190 transitions, 431 flow [2022-07-22 21:59:52,692 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 178.75) internal successors, (715), 4 states have internal predecessors, (715), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:59:52,693 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-22 21:59:52,693 INFO L200 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] [2022-07-22 21:59:52,719 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-07-22 21:59:52,907 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 21:59:52,908 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-22 21:59:52,908 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 21:59:52,908 INFO L85 PathProgramCache]: Analyzing trace with hash 1929753824, now seen corresponding path program 2 times [2022-07-22 21:59:52,908 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 21:59:52,908 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [780847967] [2022-07-22 21:59:52,909 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 21:59:52,909 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 21:59:52,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 21:59:52,981 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 21:59:52,982 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 21:59:52,982 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [780847967] [2022-07-22 21:59:52,982 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [780847967] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 21:59:52,982 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 21:59:52,982 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-22 21:59:52,983 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [572004496] [2022-07-22 21:59:52,983 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 21:59:52,983 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-22 21:59:52,983 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 21:59:52,984 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-22 21:59:52,984 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-22 21:59:52,985 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 176 out of 213 [2022-07-22 21:59:52,986 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 194 places, 190 transitions, 431 flow. Second operand has 4 states, 4 states have (on average 178.75) internal successors, (715), 4 states have internal predecessors, (715), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:59:52,986 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-22 21:59:52,986 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 176 of 213 [2022-07-22 21:59:52,987 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-22 21:59:53,148 INFO L129 PetriNetUnfolder]: 144/1030 cut-off events. [2022-07-22 21:59:53,148 INFO L130 PetriNetUnfolder]: For 174/174 co-relation queries the response was YES. [2022-07-22 21:59:53,152 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1512 conditions, 1030 events. 144/1030 cut-off events. For 174/174 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 5422 event pairs, 54 based on Foata normal form. 2/969 useless extension candidates. Maximal degree in co-relation 1504. Up to 221 conditions per place. [2022-07-22 21:59:53,156 INFO L132 encePairwiseOnDemand]: 207/213 looper letters, 31 selfloop transitions, 6 changer transitions 0/201 dead transitions. [2022-07-22 21:59:53,157 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 198 places, 201 transitions, 546 flow [2022-07-22 21:59:53,157 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-22 21:59:53,157 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-07-22 21:59:53,159 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 913 transitions. [2022-07-22 21:59:53,159 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8572769953051643 [2022-07-22 21:59:53,159 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 913 transitions. [2022-07-22 21:59:53,160 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 913 transitions. [2022-07-22 21:59:53,160 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-22 21:59:53,160 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 913 transitions. [2022-07-22 21:59:53,162 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 182.6) internal successors, (913), 5 states have internal predecessors, (913), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:59:53,164 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 213.0) internal successors, (1278), 6 states have internal predecessors, (1278), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:59:53,165 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 213.0) internal successors, (1278), 6 states have internal predecessors, (1278), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:59:53,165 INFO L186 Difference]: Start difference. First operand has 194 places, 190 transitions, 431 flow. Second operand 5 states and 913 transitions. [2022-07-22 21:59:53,166 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 198 places, 201 transitions, 546 flow [2022-07-22 21:59:53,168 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 198 places, 201 transitions, 546 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-07-22 21:59:53,171 INFO L242 Difference]: Finished difference. Result has 200 places, 192 transitions, 466 flow [2022-07-22 21:59:53,171 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=213, PETRI_DIFFERENCE_MINUEND_FLOW=431, PETRI_DIFFERENCE_MINUEND_PLACES=194, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=190, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=184, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=466, PETRI_PLACES=200, PETRI_TRANSITIONS=192} [2022-07-22 21:59:53,172 INFO L279 CegarLoopForPetriNet]: 192 programPoint places, 8 predicate places. [2022-07-22 21:59:53,172 INFO L495 AbstractCegarLoop]: Abstraction has has 200 places, 192 transitions, 466 flow [2022-07-22 21:59:53,173 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 178.75) internal successors, (715), 4 states have internal predecessors, (715), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:59:53,173 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-22 21:59:53,173 INFO L200 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] [2022-07-22 21:59:53,174 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-07-22 21:59:53,174 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-22 21:59:53,174 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 21:59:53,174 INFO L85 PathProgramCache]: Analyzing trace with hash 1356815304, now seen corresponding path program 3 times [2022-07-22 21:59:53,175 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 21:59:53,175 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [140638583] [2022-07-22 21:59:53,175 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 21:59:53,175 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 21:59:53,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 21:59:53,287 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 21:59:53,287 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 21:59:53,287 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [140638583] [2022-07-22 21:59:53,287 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [140638583] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 21:59:53,288 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [126762724] [2022-07-22 21:59:53,288 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-07-22 21:59:53,288 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 21:59:53,288 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 21:59:53,289 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-22 21:59:53,323 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-07-22 21:59:53,398 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2022-07-22 21:59:53,398 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-22 21:59:53,400 INFO L263 TraceCheckSpWp]: Trace formula consists of 210 conjuncts, 9 conjunts are in the unsatisfiable core [2022-07-22 21:59:53,406 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 21:59:53,534 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-07-22 21:59:53,534 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-22 21:59:53,535 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [126762724] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 21:59:53,535 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-22 21:59:53,535 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [6] total 12 [2022-07-22 21:59:53,535 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1992188601] [2022-07-22 21:59:53,536 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 21:59:53,536 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-22 21:59:53,536 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 21:59:53,537 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-22 21:59:53,537 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2022-07-22 21:59:53,538 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 151 out of 213 [2022-07-22 21:59:53,540 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 200 places, 192 transitions, 466 flow. Second operand has 8 states, 8 states have (on average 155.125) internal successors, (1241), 8 states have internal predecessors, (1241), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:59:53,540 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-22 21:59:53,541 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 151 of 213 [2022-07-22 21:59:53,541 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-22 21:59:53,849 INFO L129 PetriNetUnfolder]: 44/714 cut-off events. [2022-07-22 21:59:53,849 INFO L130 PetriNetUnfolder]: For 86/88 co-relation queries the response was YES. [2022-07-22 21:59:53,852 INFO L84 FinitePrefix]: Finished finitePrefix Result has 974 conditions, 714 events. 44/714 cut-off events. For 86/88 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 3109 event pairs, 26 based on Foata normal form. 1/660 useless extension candidates. Maximal degree in co-relation 963. Up to 110 conditions per place. [2022-07-22 21:59:53,855 INFO L132 encePairwiseOnDemand]: 201/213 looper letters, 35 selfloop transitions, 11 changer transitions 0/196 dead transitions. [2022-07-22 21:59:53,855 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 210 places, 196 transitions, 566 flow [2022-07-22 21:59:53,859 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-07-22 21:59:53,859 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2022-07-22 21:59:53,862 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 1708 transitions. [2022-07-22 21:59:53,863 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7289799402475459 [2022-07-22 21:59:53,864 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 1708 transitions. [2022-07-22 21:59:53,864 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 1708 transitions. [2022-07-22 21:59:53,865 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-22 21:59:53,865 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 1708 transitions. [2022-07-22 21:59:53,869 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 155.27272727272728) internal successors, (1708), 11 states have internal predecessors, (1708), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:59:53,874 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 213.0) internal successors, (2556), 12 states have internal predecessors, (2556), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:59:53,875 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 213.0) internal successors, (2556), 12 states have internal predecessors, (2556), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:59:53,875 INFO L186 Difference]: Start difference. First operand has 200 places, 192 transitions, 466 flow. Second operand 11 states and 1708 transitions. [2022-07-22 21:59:53,875 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 210 places, 196 transitions, 566 flow [2022-07-22 21:59:53,880 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 208 places, 196 transitions, 559 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-07-22 21:59:53,883 INFO L242 Difference]: Finished difference. Result has 209 places, 193 transitions, 489 flow [2022-07-22 21:59:53,883 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=213, PETRI_DIFFERENCE_MINUEND_FLOW=459, PETRI_DIFFERENCE_MINUEND_PLACES=198, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=192, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=181, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=489, PETRI_PLACES=209, PETRI_TRANSITIONS=193} [2022-07-22 21:59:53,886 INFO L279 CegarLoopForPetriNet]: 192 programPoint places, 17 predicate places. [2022-07-22 21:59:53,886 INFO L495 AbstractCegarLoop]: Abstraction has has 209 places, 193 transitions, 489 flow [2022-07-22 21:59:53,887 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 155.125) internal successors, (1241), 8 states have internal predecessors, (1241), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:59:53,887 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-22 21:59:53,887 INFO L200 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] [2022-07-22 21:59:53,914 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-07-22 21:59:54,111 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 21:59:54,112 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-22 21:59:54,112 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 21:59:54,113 INFO L85 PathProgramCache]: Analyzing trace with hash -463950498, now seen corresponding path program 1 times [2022-07-22 21:59:54,113 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 21:59:54,113 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [486701627] [2022-07-22 21:59:54,113 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 21:59:54,113 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 21:59:54,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 21:59:54,201 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-07-22 21:59:54,202 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 21:59:54,202 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [486701627] [2022-07-22 21:59:54,202 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [486701627] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 21:59:54,202 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 21:59:54,203 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-22 21:59:54,203 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1748685137] [2022-07-22 21:59:54,203 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 21:59:54,203 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-22 21:59:54,204 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 21:59:54,204 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-22 21:59:54,204 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2022-07-22 21:59:54,205 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 173 out of 213 [2022-07-22 21:59:54,206 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 209 places, 193 transitions, 489 flow. Second operand has 5 states, 5 states have (on average 175.8) internal successors, (879), 5 states have internal predecessors, (879), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:59:54,206 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-22 21:59:54,207 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 173 of 213 [2022-07-22 21:59:54,207 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-22 21:59:54,416 INFO L129 PetriNetUnfolder]: 222/1393 cut-off events. [2022-07-22 21:59:54,417 INFO L130 PetriNetUnfolder]: For 485/486 co-relation queries the response was YES. [2022-07-22 21:59:54,422 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2265 conditions, 1393 events. 222/1393 cut-off events. For 485/486 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 8255 event pairs, 74 based on Foata normal form. 4/1309 useless extension candidates. Maximal degree in co-relation 2253. Up to 234 conditions per place. [2022-07-22 21:59:54,428 INFO L132 encePairwiseOnDemand]: 205/213 looper letters, 59 selfloop transitions, 10 changer transitions 2/233 dead transitions. [2022-07-22 21:59:54,429 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 213 places, 233 transitions, 793 flow [2022-07-22 21:59:54,429 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-22 21:59:54,429 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-07-22 21:59:54,431 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 927 transitions. [2022-07-22 21:59:54,431 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8704225352112676 [2022-07-22 21:59:54,432 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 927 transitions. [2022-07-22 21:59:54,432 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 927 transitions. [2022-07-22 21:59:54,432 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-22 21:59:54,432 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 927 transitions. [2022-07-22 21:59:54,434 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 185.4) internal successors, (927), 5 states have internal predecessors, (927), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:59:54,436 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 213.0) internal successors, (1278), 6 states have internal predecessors, (1278), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:59:54,437 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 213.0) internal successors, (1278), 6 states have internal predecessors, (1278), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:59:54,437 INFO L186 Difference]: Start difference. First operand has 209 places, 193 transitions, 489 flow. Second operand 5 states and 927 transitions. [2022-07-22 21:59:54,437 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 213 places, 233 transitions, 793 flow [2022-07-22 21:59:54,441 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 204 places, 233 transitions, 773 flow, removed 0 selfloop flow, removed 9 redundant places. [2022-07-22 21:59:54,444 INFO L242 Difference]: Finished difference. Result has 207 places, 202 transitions, 569 flow [2022-07-22 21:59:54,444 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=213, PETRI_DIFFERENCE_MINUEND_FLOW=469, PETRI_DIFFERENCE_MINUEND_PLACES=200, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=193, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=185, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=569, PETRI_PLACES=207, PETRI_TRANSITIONS=202} [2022-07-22 21:59:54,445 INFO L279 CegarLoopForPetriNet]: 192 programPoint places, 15 predicate places. [2022-07-22 21:59:54,445 INFO L495 AbstractCegarLoop]: Abstraction has has 207 places, 202 transitions, 569 flow [2022-07-22 21:59:54,446 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 175.8) internal successors, (879), 5 states have internal predecessors, (879), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:59:54,446 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-22 21:59:54,446 INFO L200 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] [2022-07-22 21:59:54,447 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-07-22 21:59:54,447 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-22 21:59:54,447 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 21:59:54,447 INFO L85 PathProgramCache]: Analyzing trace with hash -1423408680, now seen corresponding path program 2 times [2022-07-22 21:59:54,448 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 21:59:54,448 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1602851777] [2022-07-22 21:59:54,448 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 21:59:54,448 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 21:59:54,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 21:59:54,549 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-07-22 21:59:54,549 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 21:59:54,549 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1602851777] [2022-07-22 21:59:54,549 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1602851777] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 21:59:54,550 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1653249524] [2022-07-22 21:59:54,550 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-07-22 21:59:54,550 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 21:59:54,550 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 21:59:54,552 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-22 21:59:54,562 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-07-22 21:59:54,652 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-07-22 21:59:54,652 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-22 21:59:54,654 INFO L263 TraceCheckSpWp]: Trace formula consists of 246 conjuncts, 6 conjunts are in the unsatisfiable core [2022-07-22 21:59:54,664 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 21:59:54,785 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-07-22 21:59:54,785 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-22 21:59:54,888 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-07-22 21:59:54,888 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1653249524] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-22 21:59:54,888 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-22 21:59:54,889 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 9 [2022-07-22 21:59:54,889 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [154931493] [2022-07-22 21:59:54,889 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-22 21:59:54,890 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-22 21:59:54,890 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 21:59:54,890 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-22 21:59:54,891 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2022-07-22 21:59:54,893 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 173 out of 213 [2022-07-22 21:59:54,896 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 207 places, 202 transitions, 569 flow. Second operand has 9 states, 9 states have (on average 175.66666666666666) internal successors, (1581), 9 states have internal predecessors, (1581), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:59:54,897 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-22 21:59:54,897 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 173 of 213 [2022-07-22 21:59:54,897 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-22 21:59:55,225 INFO L129 PetriNetUnfolder]: 219/1468 cut-off events. [2022-07-22 21:59:55,226 INFO L130 PetriNetUnfolder]: For 793/793 co-relation queries the response was YES. [2022-07-22 21:59:55,231 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2515 conditions, 1468 events. 219/1468 cut-off events. For 793/793 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 8867 event pairs, 87 based on Foata normal form. 9/1386 useless extension candidates. Maximal degree in co-relation 2500. Up to 284 conditions per place. [2022-07-22 21:59:55,237 INFO L132 encePairwiseOnDemand]: 205/213 looper letters, 52 selfloop transitions, 20 changer transitions 4/238 dead transitions. [2022-07-22 21:59:55,237 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 213 places, 238 transitions, 887 flow [2022-07-22 21:59:55,237 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-22 21:59:55,238 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-07-22 21:59:55,240 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1276 transitions. [2022-07-22 21:59:55,241 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8558014755197854 [2022-07-22 21:59:55,241 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1276 transitions. [2022-07-22 21:59:55,241 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1276 transitions. [2022-07-22 21:59:55,242 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-22 21:59:55,242 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1276 transitions. [2022-07-22 21:59:55,244 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 182.28571428571428) internal successors, (1276), 7 states have internal predecessors, (1276), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:59:55,247 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 213.0) internal successors, (1704), 8 states have internal predecessors, (1704), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:59:55,248 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 213.0) internal successors, (1704), 8 states have internal predecessors, (1704), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:59:55,248 INFO L186 Difference]: Start difference. First operand has 207 places, 202 transitions, 569 flow. Second operand 7 states and 1276 transitions. [2022-07-22 21:59:55,248 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 213 places, 238 transitions, 887 flow [2022-07-22 21:59:55,251 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 213 places, 238 transitions, 877 flow, removed 5 selfloop flow, removed 0 redundant places. [2022-07-22 21:59:55,255 INFO L242 Difference]: Finished difference. Result has 218 places, 210 transitions, 710 flow [2022-07-22 21:59:55,256 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=213, PETRI_DIFFERENCE_MINUEND_FLOW=567, PETRI_DIFFERENCE_MINUEND_PLACES=207, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=202, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=185, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=710, PETRI_PLACES=218, PETRI_TRANSITIONS=210} [2022-07-22 21:59:55,256 INFO L279 CegarLoopForPetriNet]: 192 programPoint places, 26 predicate places. [2022-07-22 21:59:55,257 INFO L495 AbstractCegarLoop]: Abstraction has has 218 places, 210 transitions, 710 flow [2022-07-22 21:59:55,257 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 175.66666666666666) internal successors, (1581), 9 states have internal predecessors, (1581), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:59:55,257 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-22 21:59:55,258 INFO L200 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] [2022-07-22 21:59:55,285 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2022-07-22 21:59:55,471 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 21:59:55,472 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-22 21:59:55,472 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 21:59:55,472 INFO L85 PathProgramCache]: Analyzing trace with hash 1110356942, now seen corresponding path program 1 times [2022-07-22 21:59:55,472 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 21:59:55,472 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1320390157] [2022-07-22 21:59:55,473 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 21:59:55,473 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 21:59:55,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 21:59:55,577 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-07-22 21:59:55,578 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 21:59:55,578 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1320390157] [2022-07-22 21:59:55,578 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1320390157] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 21:59:55,578 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 21:59:55,579 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-22 21:59:55,579 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1680236538] [2022-07-22 21:59:55,579 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 21:59:55,579 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-22 21:59:55,580 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 21:59:55,580 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-22 21:59:55,580 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-07-22 21:59:55,581 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 173 out of 213 [2022-07-22 21:59:55,583 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 218 places, 210 transitions, 710 flow. Second operand has 6 states, 6 states have (on average 176.66666666666666) internal successors, (1060), 6 states have internal predecessors, (1060), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:59:55,583 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-22 21:59:55,583 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 173 of 213 [2022-07-22 21:59:55,583 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-22 21:59:55,923 INFO L129 PetriNetUnfolder]: 259/1806 cut-off events. [2022-07-22 21:59:55,923 INFO L130 PetriNetUnfolder]: For 1666/1666 co-relation queries the response was YES. [2022-07-22 21:59:55,932 INFO L84 FinitePrefix]: Finished finitePrefix Result has 3286 conditions, 1806 events. 259/1806 cut-off events. For 1666/1666 co-relation queries the response was YES. Maximal size of possible extension queue 32. Compared 11937 event pairs, 55 based on Foata normal form. 12/1704 useless extension candidates. Maximal degree in co-relation 3266. Up to 317 conditions per place. [2022-07-22 21:59:55,939 INFO L132 encePairwiseOnDemand]: 206/213 looper letters, 62 selfloop transitions, 18 changer transitions 0/242 dead transitions. [2022-07-22 21:59:55,940 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 223 places, 242 transitions, 1015 flow [2022-07-22 21:59:55,940 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-22 21:59:55,940 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-07-22 21:59:55,942 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1277 transitions. [2022-07-22 21:59:55,943 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8564721663313213 [2022-07-22 21:59:55,943 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1277 transitions. [2022-07-22 21:59:55,943 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1277 transitions. [2022-07-22 21:59:55,944 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-22 21:59:55,944 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1277 transitions. [2022-07-22 21:59:55,947 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 182.42857142857142) internal successors, (1277), 7 states have internal predecessors, (1277), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:59:55,949 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 213.0) internal successors, (1704), 8 states have internal predecessors, (1704), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:59:55,950 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 213.0) internal successors, (1704), 8 states have internal predecessors, (1704), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:59:55,950 INFO L186 Difference]: Start difference. First operand has 218 places, 210 transitions, 710 flow. Second operand 7 states and 1277 transitions. [2022-07-22 21:59:55,950 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 223 places, 242 transitions, 1015 flow [2022-07-22 21:59:55,956 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 221 places, 242 transitions, 987 flow, removed 10 selfloop flow, removed 2 redundant places. [2022-07-22 21:59:55,959 INFO L242 Difference]: Finished difference. Result has 224 places, 214 transitions, 781 flow [2022-07-22 21:59:55,960 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=213, PETRI_DIFFERENCE_MINUEND_FLOW=687, PETRI_DIFFERENCE_MINUEND_PLACES=215, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=210, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=193, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=781, PETRI_PLACES=224, PETRI_TRANSITIONS=214} [2022-07-22 21:59:55,960 INFO L279 CegarLoopForPetriNet]: 192 programPoint places, 32 predicate places. [2022-07-22 21:59:55,960 INFO L495 AbstractCegarLoop]: Abstraction has has 224 places, 214 transitions, 781 flow [2022-07-22 21:59:55,961 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 176.66666666666666) internal successors, (1060), 6 states have internal predecessors, (1060), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:59:55,961 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-22 21:59:55,961 INFO L200 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] [2022-07-22 21:59:55,962 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-07-22 21:59:55,962 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-22 21:59:55,962 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 21:59:55,962 INFO L85 PathProgramCache]: Analyzing trace with hash 627297006, now seen corresponding path program 2 times [2022-07-22 21:59:55,968 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 21:59:55,968 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [723715348] [2022-07-22 21:59:55,968 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 21:59:55,969 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 21:59:56,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 21:59:56,036 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-07-22 21:59:56,037 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 21:59:56,037 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [723715348] [2022-07-22 21:59:56,037 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [723715348] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 21:59:56,038 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 21:59:56,038 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-22 21:59:56,038 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2043263929] [2022-07-22 21:59:56,038 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 21:59:56,039 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-22 21:59:56,039 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 21:59:56,039 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-22 21:59:56,039 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-22 21:59:56,040 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 184 out of 213 [2022-07-22 21:59:56,041 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 224 places, 214 transitions, 781 flow. Second operand has 4 states, 4 states have (on average 186.75) internal successors, (747), 4 states have internal predecessors, (747), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:59:56,041 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-22 21:59:56,041 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 184 of 213 [2022-07-22 21:59:56,042 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-22 21:59:56,198 INFO L129 PetriNetUnfolder]: 87/1068 cut-off events. [2022-07-22 21:59:56,198 INFO L130 PetriNetUnfolder]: For 1155/1168 co-relation queries the response was YES. [2022-07-22 21:59:56,204 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1845 conditions, 1068 events. 87/1068 cut-off events. For 1155/1168 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 5771 event pairs, 21 based on Foata normal form. 17/1010 useless extension candidates. Maximal degree in co-relation 1822. Up to 94 conditions per place. [2022-07-22 21:59:56,208 INFO L132 encePairwiseOnDemand]: 207/213 looper letters, 31 selfloop transitions, 13 changer transitions 1/225 dead transitions. [2022-07-22 21:59:56,209 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 228 places, 225 transitions, 928 flow [2022-07-22 21:59:56,209 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-22 21:59:56,209 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-07-22 21:59:56,211 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 946 transitions. [2022-07-22 21:59:56,211 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.888262910798122 [2022-07-22 21:59:56,211 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 946 transitions. [2022-07-22 21:59:56,212 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 946 transitions. [2022-07-22 21:59:56,212 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-22 21:59:56,212 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 946 transitions. [2022-07-22 21:59:56,214 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 189.2) internal successors, (946), 5 states have internal predecessors, (946), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:59:56,216 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 213.0) internal successors, (1278), 6 states have internal predecessors, (1278), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:59:56,216 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 213.0) internal successors, (1278), 6 states have internal predecessors, (1278), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:59:56,217 INFO L186 Difference]: Start difference. First operand has 224 places, 214 transitions, 781 flow. Second operand 5 states and 946 transitions. [2022-07-22 21:59:56,217 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 228 places, 225 transitions, 928 flow [2022-07-22 21:59:56,222 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 225 places, 225 transitions, 893 flow, removed 6 selfloop flow, removed 3 redundant places. [2022-07-22 21:59:56,225 INFO L242 Difference]: Finished difference. Result has 227 places, 215 transitions, 802 flow [2022-07-22 21:59:56,225 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=213, PETRI_DIFFERENCE_MINUEND_FLOW=748, PETRI_DIFFERENCE_MINUEND_PLACES=221, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=214, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=201, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=802, PETRI_PLACES=227, PETRI_TRANSITIONS=215} [2022-07-22 21:59:56,226 INFO L279 CegarLoopForPetriNet]: 192 programPoint places, 35 predicate places. [2022-07-22 21:59:56,226 INFO L495 AbstractCegarLoop]: Abstraction has has 227 places, 215 transitions, 802 flow [2022-07-22 21:59:56,227 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 186.75) internal successors, (747), 4 states have internal predecessors, (747), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:59:56,227 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-22 21:59:56,227 INFO L200 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] [2022-07-22 21:59:56,227 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-07-22 21:59:56,228 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-22 21:59:56,228 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 21:59:56,228 INFO L85 PathProgramCache]: Analyzing trace with hash -1537540866, now seen corresponding path program 3 times [2022-07-22 21:59:56,228 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 21:59:56,228 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1024790558] [2022-07-22 21:59:56,229 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 21:59:56,229 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 21:59:56,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 21:59:56,331 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-07-22 21:59:56,331 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 21:59:56,331 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1024790558] [2022-07-22 21:59:56,332 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1024790558] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 21:59:56,332 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 21:59:56,332 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-22 21:59:56,332 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1083661187] [2022-07-22 21:59:56,332 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 21:59:56,333 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-22 21:59:56,333 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 21:59:56,333 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-22 21:59:56,333 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2022-07-22 21:59:56,335 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 173 out of 213 [2022-07-22 21:59:56,336 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 227 places, 215 transitions, 802 flow. Second operand has 6 states, 6 states have (on average 176.66666666666666) internal successors, (1060), 6 states have internal predecessors, (1060), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:59:56,336 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-22 21:59:56,336 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 173 of 213 [2022-07-22 21:59:56,336 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-22 21:59:56,624 INFO L129 PetriNetUnfolder]: 238/1654 cut-off events. [2022-07-22 21:59:56,625 INFO L130 PetriNetUnfolder]: For 2256/2256 co-relation queries the response was YES. [2022-07-22 21:59:56,634 INFO L84 FinitePrefix]: Finished finitePrefix Result has 3197 conditions, 1654 events. 238/1654 cut-off events. For 2256/2256 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 9952 event pairs, 73 based on Foata normal form. 12/1563 useless extension candidates. Maximal degree in co-relation 3174. Up to 246 conditions per place. [2022-07-22 21:59:56,641 INFO L132 encePairwiseOnDemand]: 206/213 looper letters, 67 selfloop transitions, 20 changer transitions 4/253 dead transitions. [2022-07-22 21:59:56,642 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 232 places, 253 transitions, 1144 flow [2022-07-22 21:59:56,642 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-22 21:59:56,642 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-07-22 21:59:56,644 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1108 transitions. [2022-07-22 21:59:56,645 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.86697965571205 [2022-07-22 21:59:56,645 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1108 transitions. [2022-07-22 21:59:56,645 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1108 transitions. [2022-07-22 21:59:56,646 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-22 21:59:56,646 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1108 transitions. [2022-07-22 21:59:56,648 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 184.66666666666666) internal successors, (1108), 6 states have internal predecessors, (1108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:59:56,650 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 213.0) internal successors, (1491), 7 states have internal predecessors, (1491), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:59:56,651 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 213.0) internal successors, (1491), 7 states have internal predecessors, (1491), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:59:56,651 INFO L186 Difference]: Start difference. First operand has 227 places, 215 transitions, 802 flow. Second operand 6 states and 1108 transitions. [2022-07-22 21:59:56,652 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 232 places, 253 transitions, 1144 flow [2022-07-22 21:59:56,658 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 230 places, 253 transitions, 1118 flow, removed 6 selfloop flow, removed 2 redundant places. [2022-07-22 21:59:56,697 INFO L242 Difference]: Finished difference. Result has 231 places, 216 transitions, 836 flow [2022-07-22 21:59:56,697 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=213, PETRI_DIFFERENCE_MINUEND_FLOW=780, PETRI_DIFFERENCE_MINUEND_PLACES=225, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=215, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=195, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=836, PETRI_PLACES=231, PETRI_TRANSITIONS=216} [2022-07-22 21:59:56,698 INFO L279 CegarLoopForPetriNet]: 192 programPoint places, 39 predicate places. [2022-07-22 21:59:56,698 INFO L495 AbstractCegarLoop]: Abstraction has has 231 places, 216 transitions, 836 flow [2022-07-22 21:59:56,699 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 176.66666666666666) internal successors, (1060), 6 states have internal predecessors, (1060), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:59:56,699 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-22 21:59:56,699 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 21:59:56,699 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-07-22 21:59:56,700 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-22 21:59:56,700 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 21:59:56,700 INFO L85 PathProgramCache]: Analyzing trace with hash 748042741, now seen corresponding path program 1 times [2022-07-22 21:59:56,700 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 21:59:56,700 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1191486838] [2022-07-22 21:59:56,701 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 21:59:56,701 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 21:59:56,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 21:59:56,933 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-07-22 21:59:56,933 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 21:59:56,933 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1191486838] [2022-07-22 21:59:56,933 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1191486838] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 21:59:56,933 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1791321475] [2022-07-22 21:59:56,933 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 21:59:56,933 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 21:59:56,934 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 21:59:56,940 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-22 21:59:56,942 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-07-22 21:59:57,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 21:59:57,053 INFO L263 TraceCheckSpWp]: Trace formula consists of 337 conjuncts, 53 conjunts are in the unsatisfiable core [2022-07-22 21:59:57,061 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 21:59:57,104 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 [2022-07-22 21:59:57,273 INFO L356 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-07-22 21:59:57,274 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 [2022-07-22 21:59:57,880 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 14 treesize of output 16 [2022-07-22 21:59:58,363 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-22 21:59:58,365 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-07-22 21:59:58,366 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 17 treesize of output 10 [2022-07-22 21:59:58,469 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 21:59:58,469 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-22 21:59:59,328 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-07-22 21:59:59,329 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 46 treesize of output 38 [2022-07-22 21:59:59,334 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 13 treesize of output 7 [2022-07-22 22:00:00,947 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 22:00:00,947 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1791321475] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-22 22:00:00,948 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-22 22:00:00,948 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 25, 25] total 50 [2022-07-22 22:00:00,948 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [369332666] [2022-07-22 22:00:00,948 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-22 22:00:00,949 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 50 states [2022-07-22 22:00:00,949 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 22:00:00,950 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2022-07-22 22:00:00,951 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=161, Invalid=2275, Unknown=14, NotChecked=0, Total=2450 [2022-07-22 22:00:00,955 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 81 out of 213 [2022-07-22 22:00:00,959 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 231 places, 216 transitions, 836 flow. Second operand has 50 states, 50 states have (on average 86.72) internal successors, (4336), 50 states have internal predecessors, (4336), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 22:00:00,959 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-22 22:00:00,959 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 81 of 213 [2022-07-22 22:00:00,959 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-22 22:00:19,911 INFO L129 PetriNetUnfolder]: 10893/24056 cut-off events. [2022-07-22 22:00:19,911 INFO L130 PetriNetUnfolder]: For 30461/30738 co-relation queries the response was YES. [2022-07-22 22:00:20,124 INFO L84 FinitePrefix]: Finished finitePrefix Result has 56452 conditions, 24056 events. 10893/24056 cut-off events. For 30461/30738 co-relation queries the response was YES. Maximal size of possible extension queue 350. Compared 219250 event pairs, 520 based on Foata normal form. 620/23330 useless extension candidates. Maximal degree in co-relation 56428. Up to 3712 conditions per place. [2022-07-22 22:00:20,225 INFO L132 encePairwiseOnDemand]: 149/213 looper letters, 1019 selfloop transitions, 391 changer transitions 273/1764 dead transitions. [2022-07-22 22:00:20,225 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 385 places, 1764 transitions, 8939 flow [2022-07-22 22:00:20,226 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 156 states. [2022-07-22 22:00:20,226 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 156 states. [2022-07-22 22:00:20,252 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 156 states to 156 states and 14262 transitions. [2022-07-22 22:00:20,259 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.42921632358252076 [2022-07-22 22:00:20,259 INFO L72 ComplementDD]: Start complementDD. Operand 156 states and 14262 transitions. [2022-07-22 22:00:20,259 INFO L73 IsDeterministic]: Start isDeterministic. Operand 156 states and 14262 transitions. [2022-07-22 22:00:20,269 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-22 22:00:20,269 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 156 states and 14262 transitions. [2022-07-22 22:00:20,307 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 157 states, 156 states have (on average 91.42307692307692) internal successors, (14262), 156 states have internal predecessors, (14262), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 22:00:20,357 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 157 states, 157 states have (on average 213.0) internal successors, (33441), 157 states have internal predecessors, (33441), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 22:00:20,369 INFO L81 ComplementDD]: Finished complementDD. Result has 157 states, 157 states have (on average 213.0) internal successors, (33441), 157 states have internal predecessors, (33441), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 22:00:20,370 INFO L186 Difference]: Start difference. First operand has 231 places, 216 transitions, 836 flow. Second operand 156 states and 14262 transitions. [2022-07-22 22:00:20,370 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 385 places, 1764 transitions, 8939 flow [2022-07-22 22:00:20,417 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 381 places, 1764 transitions, 8702 flow, removed 12 selfloop flow, removed 4 redundant places. [2022-07-22 22:00:20,436 INFO L242 Difference]: Finished difference. Result has 471 places, 568 transitions, 4010 flow [2022-07-22 22:00:20,437 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=213, PETRI_DIFFERENCE_MINUEND_FLOW=799, PETRI_DIFFERENCE_MINUEND_PLACES=226, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=216, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=140, PETRI_DIFFERENCE_SUBTRAHEND_STATES=156, PETRI_FLOW=4010, PETRI_PLACES=471, PETRI_TRANSITIONS=568} [2022-07-22 22:00:20,438 INFO L279 CegarLoopForPetriNet]: 192 programPoint places, 279 predicate places. [2022-07-22 22:00:20,438 INFO L495 AbstractCegarLoop]: Abstraction has has 471 places, 568 transitions, 4010 flow [2022-07-22 22:00:20,439 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 50 states, 50 states have (on average 86.72) internal successors, (4336), 50 states have internal predecessors, (4336), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 22:00:20,439 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-22 22:00:20,440 INFO L200 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 22:00:20,467 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-07-22 22:00:20,655 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 22:00:20,656 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-22 22:00:20,656 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 22:00:20,656 INFO L85 PathProgramCache]: Analyzing trace with hash 1449282348, now seen corresponding path program 2 times [2022-07-22 22:00:20,657 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 22:00:20,657 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [944154086] [2022-07-22 22:00:20,657 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 22:00:20,657 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 22:00:20,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:00:32,277 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-07-22 22:00:32,278 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 22:00:32,278 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [944154086] [2022-07-22 22:00:32,278 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [944154086] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 22:00:32,278 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [944720231] [2022-07-22 22:00:32,278 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-07-22 22:00:32,279 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 22:00:32,279 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 22:00:32,287 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-22 22:00:32,287 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-07-22 22:00:32,401 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-07-22 22:00:32,402 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-22 22:00:32,403 INFO L263 TraceCheckSpWp]: Trace formula consists of 356 conjuncts, 35 conjunts are in the unsatisfiable core [2022-07-22 22:00:32,407 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 22:00:35,895 INFO L356 Elim1Store]: treesize reduction 13, result has 18.8 percent of original size [2022-07-22 22:00:35,896 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 23 treesize of output 10 [2022-07-22 22:00:36,576 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 8 proven. 6 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-07-22 22:00:36,577 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-22 22:00:37,845 INFO L356 Elim1Store]: treesize reduction 9, result has 43.8 percent of original size [2022-07-22 22:00:37,846 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 19 treesize of output 11 [2022-07-22 22:00:39,095 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 2 proven. 12 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-07-22 22:00:39,095 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [944720231] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-22 22:00:39,095 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-22 22:00:39,096 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 20, 20] total 55 [2022-07-22 22:00:39,096 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [882620966] [2022-07-22 22:00:39,096 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-22 22:00:39,097 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 55 states [2022-07-22 22:00:39,097 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 22:00:39,097 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 55 interpolants. [2022-07-22 22:00:39,098 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=205, Invalid=2765, Unknown=0, NotChecked=0, Total=2970 [2022-07-22 22:00:39,104 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 76 out of 213 [2022-07-22 22:00:39,107 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 471 places, 568 transitions, 4010 flow. Second operand has 55 states, 55 states have (on average 81.32727272727273) internal successors, (4473), 55 states have internal predecessors, (4473), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 22:00:39,107 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-22 22:00:39,107 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 76 of 213 [2022-07-22 22:00:39,107 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-22 22:03:05,171 INFO L129 PetriNetUnfolder]: 53291/98904 cut-off events. [2022-07-22 22:03:05,172 INFO L130 PetriNetUnfolder]: For 908120/908128 co-relation queries the response was YES. [2022-07-22 22:03:07,889 INFO L84 FinitePrefix]: Finished finitePrefix Result has 406493 conditions, 98904 events. 53291/98904 cut-off events. For 908120/908128 co-relation queries the response was YES. Maximal size of possible extension queue 1261. Compared 923569 event pairs, 5140 based on Foata normal form. 10/96404 useless extension candidates. Maximal degree in co-relation 406380. Up to 17405 conditions per place. [2022-07-22 22:03:08,414 INFO L132 encePairwiseOnDemand]: 146/213 looper letters, 4291 selfloop transitions, 1172 changer transitions 354/5886 dead transitions. [2022-07-22 22:03:08,415 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 718 places, 5886 transitions, 63872 flow [2022-07-22 22:03:08,415 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 288 states. [2022-07-22 22:03:08,416 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 288 states. [2022-07-22 22:03:08,446 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 288 states to 288 states and 25977 transitions. [2022-07-22 22:03:08,462 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.42346439749608766 [2022-07-22 22:03:08,463 INFO L72 ComplementDD]: Start complementDD. Operand 288 states and 25977 transitions. [2022-07-22 22:03:08,463 INFO L73 IsDeterministic]: Start isDeterministic. Operand 288 states and 25977 transitions. [2022-07-22 22:03:08,475 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-22 22:03:08,476 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 288 states and 25977 transitions. [2022-07-22 22:03:08,529 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 289 states, 288 states have (on average 90.19791666666667) internal successors, (25977), 288 states have internal predecessors, (25977), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 22:03:08,617 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 289 states, 289 states have (on average 213.0) internal successors, (61557), 289 states have internal predecessors, (61557), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 22:03:08,647 INFO L81 ComplementDD]: Finished complementDD. Result has 289 states, 289 states have (on average 213.0) internal successors, (61557), 289 states have internal predecessors, (61557), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 22:03:08,648 INFO L186 Difference]: Start difference. First operand has 471 places, 568 transitions, 4010 flow. Second operand 288 states and 25977 transitions. [2022-07-22 22:03:08,648 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 718 places, 5886 transitions, 63872 flow [2022-07-22 22:03:13,489 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 694 places, 5886 transitions, 62374 flow, removed 641 selfloop flow, removed 24 redundant places. [2022-07-22 22:03:13,537 INFO L242 Difference]: Finished difference. Result has 908 places, 1845 transitions, 18847 flow [2022-07-22 22:03:13,538 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=213, PETRI_DIFFERENCE_MINUEND_FLOW=3792, PETRI_DIFFERENCE_MINUEND_PLACES=407, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=568, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=92, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=365, PETRI_DIFFERENCE_SUBTRAHEND_STATES=288, PETRI_FLOW=18847, PETRI_PLACES=908, PETRI_TRANSITIONS=1845} [2022-07-22 22:03:13,539 INFO L279 CegarLoopForPetriNet]: 192 programPoint places, 716 predicate places. [2022-07-22 22:03:13,539 INFO L495 AbstractCegarLoop]: Abstraction has has 908 places, 1845 transitions, 18847 flow [2022-07-22 22:03:13,541 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 55 states, 55 states have (on average 81.32727272727273) internal successors, (4473), 55 states have internal predecessors, (4473), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 22:03:13,541 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-22 22:03:13,541 INFO L200 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 22:03:13,569 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-07-22 22:03:13,766 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2022-07-22 22:03:13,767 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-22 22:03:13,768 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 22:03:13,768 INFO L85 PathProgramCache]: Analyzing trace with hash 1713828176, now seen corresponding path program 3 times [2022-07-22 22:03:13,768 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 22:03:13,768 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [647685837] [2022-07-22 22:03:13,768 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 22:03:13,768 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 22:03:13,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:03:14,160 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 1 proven. 15 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-07-22 22:03:14,161 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 22:03:14,161 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [647685837] [2022-07-22 22:03:14,161 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [647685837] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 22:03:14,161 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [692635701] [2022-07-22 22:03:14,161 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-07-22 22:03:14,161 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 22:03:14,162 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 22:03:14,163 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-22 22:03:14,164 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-07-22 22:03:14,445 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-07-22 22:03:14,445 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-22 22:03:14,448 INFO L263 TraceCheckSpWp]: Trace formula consists of 356 conjuncts, 42 conjunts are in the unsatisfiable core [2022-07-22 22:03:14,452 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 22:03:15,476 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-22 22:03:15,478 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-07-22 22:03:15,479 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 19 treesize of output 10 [2022-07-22 22:03:15,588 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 1 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 22:03:15,588 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-22 22:03:15,880 INFO L356 Elim1Store]: treesize reduction 9, result has 43.8 percent of original size [2022-07-22 22:03:15,880 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 19 treesize of output 11 [2022-07-22 22:03:16,407 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 17 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 22:03:16,408 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [692635701] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-22 22:03:16,408 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-22 22:03:16,408 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 25, 20] total 49 [2022-07-22 22:03:16,408 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [673205699] [2022-07-22 22:03:16,408 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-22 22:03:16,409 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 49 states [2022-07-22 22:03:16,409 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 22:03:16,410 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2022-07-22 22:03:16,411 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=211, Invalid=2141, Unknown=0, NotChecked=0, Total=2352 [2022-07-22 22:03:16,414 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 85 out of 213 [2022-07-22 22:03:16,417 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 908 places, 1845 transitions, 18847 flow. Second operand has 49 states, 49 states have (on average 91.04081632653062) internal successors, (4461), 49 states have internal predecessors, (4461), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 22:03:16,417 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-22 22:03:16,417 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 85 of 213 [2022-07-22 22:03:16,417 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand