./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/pthread-ext/06_ticket.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version eb692b52 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/pthread-ext/06_ticket.i -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 d21b75ab9211f19b3beb5c83d6d66f0a0906e2f271e4621d3ded70db8a63bb33 --- Real Ultimate output --- This is Ultimate 0.2.2-?-eb692b5 [2022-07-19 21:02:22,868 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-19 21:02:22,869 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-19 21:02:22,893 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-19 21:02:22,893 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-19 21:02:22,894 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-19 21:02:22,897 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-19 21:02:22,901 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-19 21:02:22,903 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-19 21:02:22,906 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-19 21:02:22,907 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-19 21:02:22,908 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-19 21:02:22,909 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-19 21:02:22,910 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-19 21:02:22,911 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-19 21:02:22,912 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-19 21:02:22,913 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-19 21:02:22,914 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-19 21:02:22,917 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-19 21:02:22,918 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-19 21:02:22,919 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-19 21:02:22,932 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-19 21:02:22,932 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-19 21:02:22,933 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-19 21:02:22,933 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-19 21:02:22,935 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-19 21:02:22,935 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-19 21:02:22,935 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-19 21:02:22,935 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-19 21:02:22,936 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-19 21:02:22,936 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-19 21:02:22,936 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-19 21:02:22,937 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-19 21:02:22,937 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-19 21:02:22,937 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-19 21:02:22,938 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-19 21:02:22,938 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-19 21:02:22,939 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-19 21:02:22,939 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-19 21:02:22,939 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-19 21:02:22,940 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-19 21:02:22,940 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-19 21:02:22,941 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-19 21:02:22,957 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-19 21:02:22,961 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-19 21:02:22,962 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-19 21:02:22,962 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-19 21:02:22,963 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-19 21:02:22,963 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-19 21:02:22,964 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-19 21:02:22,964 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-19 21:02:22,964 INFO L138 SettingsManager]: * Use SBE=true [2022-07-19 21:02:22,964 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-19 21:02:22,965 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-19 21:02:22,965 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-19 21:02:22,965 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-19 21:02:22,965 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-19 21:02:22,965 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-19 21:02:22,965 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-19 21:02:22,965 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-19 21:02:22,966 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-19 21:02:22,966 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-19 21:02:22,966 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-19 21:02:22,966 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-19 21:02:22,966 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-19 21:02:22,966 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-19 21:02:22,967 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-19 21:02:22,967 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-19 21:02:22,967 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-19 21:02:22,967 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-19 21:02:22,967 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-19 21:02:22,967 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-19 21:02:22,967 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-19 21:02:22,968 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-19 21:02:22,968 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-19 21:02:22,968 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-19 21:02:22,968 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d21b75ab9211f19b3beb5c83d6d66f0a0906e2f271e4621d3ded70db8a63bb33 [2022-07-19 21:02:23,164 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-19 21:02:23,186 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-19 21:02:23,188 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-19 21:02:23,189 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-19 21:02:23,190 INFO L275 PluginConnector]: CDTParser initialized [2022-07-19 21:02:23,191 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/pthread-ext/06_ticket.i [2022-07-19 21:02:23,231 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a04a98fac/cb3e360dce06450d8b800ce4a00d17e1/FLAG0938ac9b7 [2022-07-19 21:02:23,696 INFO L306 CDTParser]: Found 1 translation units. [2022-07-19 21:02:23,701 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-ext/06_ticket.i [2022-07-19 21:02:23,712 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a04a98fac/cb3e360dce06450d8b800ce4a00d17e1/FLAG0938ac9b7 [2022-07-19 21:02:23,728 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a04a98fac/cb3e360dce06450d8b800ce4a00d17e1 [2022-07-19 21:02:23,730 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-19 21:02:23,732 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-19 21:02:23,734 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-19 21:02:23,734 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-19 21:02:23,736 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-19 21:02:23,737 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.07 09:02:23" (1/1) ... [2022-07-19 21:02:23,737 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@79ed9c0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:02:23, skipping insertion in model container [2022-07-19 21:02:23,738 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.07 09:02:23" (1/1) ... [2022-07-19 21:02:23,742 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-19 21:02:23,779 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-19 21:02:24,040 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/pthread-ext/06_ticket.i[30728,30741] [2022-07-19 21:02:24,045 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-19 21:02:24,049 INFO L203 MainTranslator]: Completed pre-run [2022-07-19 21:02:24,095 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/pthread-ext/06_ticket.i[30728,30741] [2022-07-19 21:02:24,100 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-19 21:02:24,127 INFO L208 MainTranslator]: Completed translation [2022-07-19 21:02:24,128 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:02:24 WrapperNode [2022-07-19 21:02:24,128 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-19 21:02:24,129 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-19 21:02:24,129 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-19 21:02:24,129 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-19 21:02:24,134 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:02:24" (1/1) ... [2022-07-19 21:02:24,153 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:02:24" (1/1) ... [2022-07-19 21:02:24,169 INFO L137 Inliner]: procedures = 172, calls = 16, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 68 [2022-07-19 21:02:24,170 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-19 21:02:24,170 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-19 21:02:24,171 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-19 21:02:24,171 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-19 21:02:24,175 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:02:24" (1/1) ... [2022-07-19 21:02:24,176 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:02:24" (1/1) ... [2022-07-19 21:02:24,178 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:02:24" (1/1) ... [2022-07-19 21:02:24,178 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:02:24" (1/1) ... [2022-07-19 21:02:24,181 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:02:24" (1/1) ... [2022-07-19 21:02:24,183 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:02:24" (1/1) ... [2022-07-19 21:02:24,184 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:02:24" (1/1) ... [2022-07-19 21:02:24,186 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-19 21:02:24,187 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-19 21:02:24,187 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-19 21:02:24,187 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-19 21:02:24,196 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:02:24" (1/1) ... [2022-07-19 21:02:24,203 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-19 21:02:24,212 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 21:02:24,245 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) [2022-07-19 21:02:24,247 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 [2022-07-19 21:02:24,275 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2022-07-19 21:02:24,275 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2022-07-19 21:02:24,276 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-07-19 21:02:24,276 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-07-19 21:02:24,276 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-19 21:02:24,276 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-07-19 21:02:24,276 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-07-19 21:02:24,276 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-19 21:02:24,276 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-07-19 21:02:24,277 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-19 21:02:24,277 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-19 21:02:24,278 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-07-19 21:02:24,343 INFO L234 CfgBuilder]: Building ICFG [2022-07-19 21:02:24,345 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-19 21:02:26,707 INFO L275 CfgBuilder]: Performing block encoding [2022-07-19 21:02:26,739 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-19 21:02:26,740 INFO L299 CfgBuilder]: Removed 2 assume(true) statements. [2022-07-19 21:02:26,741 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.07 09:02:26 BoogieIcfgContainer [2022-07-19 21:02:26,741 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-19 21:02:26,742 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-19 21:02:26,742 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-19 21:02:26,745 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-19 21:02:26,746 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.07 09:02:23" (1/3) ... [2022-07-19 21:02:26,746 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6aa95614 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.07 09:02:26, skipping insertion in model container [2022-07-19 21:02:26,746 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:02:24" (2/3) ... [2022-07-19 21:02:26,747 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6aa95614 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.07 09:02:26, skipping insertion in model container [2022-07-19 21:02:26,747 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.07 09:02:26" (3/3) ... [2022-07-19 21:02:26,748 INFO L111 eAbstractionObserver]: Analyzing ICFG 06_ticket.i [2022-07-19 21:02:26,752 WARN L143 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-07-19 21:02:26,758 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-19 21:02:26,759 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-19 21:02:26,759 INFO L509 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-07-19 21:02:26,800 INFO L135 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-07-19 21:02:26,821 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 75 places, 79 transitions, 163 flow [2022-07-19 21:02:26,849 INFO L129 PetriNetUnfolder]: 8/90 cut-off events. [2022-07-19 21:02:26,850 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-07-19 21:02:26,853 INFO L84 FinitePrefix]: Finished finitePrefix Result has 95 conditions, 90 events. 8/90 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 87 event pairs, 0 based on Foata normal form. 0/79 useless extension candidates. Maximal degree in co-relation 61. Up to 4 conditions per place. [2022-07-19 21:02:26,853 INFO L82 GeneralOperation]: Start removeDead. Operand has 75 places, 79 transitions, 163 flow [2022-07-19 21:02:26,856 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 75 places, 79 transitions, 163 flow [2022-07-19 21:02:26,862 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-19 21:02:26,866 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@6df6a914, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@4d472ffe [2022-07-19 21:02:26,867 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2022-07-19 21:02:26,874 INFO L129 PetriNetUnfolder]: 2/45 cut-off events. [2022-07-19 21:02:26,874 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-07-19 21:02:26,874 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:02:26,875 INFO L200 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 21:02:26,875 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 21:02:26,879 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:02:26,879 INFO L85 PathProgramCache]: Analyzing trace with hash -1427749551, now seen corresponding path program 1 times [2022-07-19 21:02:26,885 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:02:26,885 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1723296896] [2022-07-19 21:02:26,886 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:02:26,886 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:02:26,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-19 21:02:26,966 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-07-19 21:02:27,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-19 21:02:27,018 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-07-19 21:02:27,022 INFO L271 BasicCegarLoop]: Counterexample is feasible [2022-07-19 21:02:27,023 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 3 remaining) [2022-07-19 21:02:27,024 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (1 of 3 remaining) [2022-07-19 21:02:27,024 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (0 of 3 remaining) [2022-07-19 21:02:27,025 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-19 21:02:27,025 INFO L356 BasicCegarLoop]: Path program histogram: [1] [2022-07-19 21:02:27,031 WARN L231 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2022-07-19 21:02:27,031 INFO L509 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2022-07-19 21:02:27,053 INFO L135 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-07-19 21:02:27,059 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 120 places, 128 transitions, 268 flow [2022-07-19 21:02:27,084 INFO L129 PetriNetUnfolder]: 15/152 cut-off events. [2022-07-19 21:02:27,084 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-07-19 21:02:27,086 INFO L84 FinitePrefix]: Finished finitePrefix Result has 162 conditions, 152 events. 15/152 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 282 event pairs, 0 based on Foata normal form. 0/132 useless extension candidates. Maximal degree in co-relation 109. Up to 6 conditions per place. [2022-07-19 21:02:27,086 INFO L82 GeneralOperation]: Start removeDead. Operand has 120 places, 128 transitions, 268 flow [2022-07-19 21:02:27,088 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 120 places, 128 transitions, 268 flow [2022-07-19 21:02:27,089 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-19 21:02:27,090 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@6df6a914, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@4d472ffe [2022-07-19 21:02:27,090 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2022-07-19 21:02:27,099 INFO L129 PetriNetUnfolder]: 3/72 cut-off events. [2022-07-19 21:02:27,100 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-07-19 21:02:27,100 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:02:27,100 INFO L200 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 21:02:27,100 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-07-19 21:02:27,101 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:02:27,101 INFO L85 PathProgramCache]: Analyzing trace with hash -850813562, now seen corresponding path program 1 times [2022-07-19 21:02:27,101 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:02:27,101 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1488105222] [2022-07-19 21:02:27,102 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:02:27,102 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:02:27,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-19 21:02:27,120 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-07-19 21:02:27,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-19 21:02:27,135 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-07-19 21:02:27,136 INFO L271 BasicCegarLoop]: Counterexample is feasible [2022-07-19 21:02:27,136 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (3 of 4 remaining) [2022-07-19 21:02:27,136 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (2 of 4 remaining) [2022-07-19 21:02:27,136 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (1 of 4 remaining) [2022-07-19 21:02:27,137 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (0 of 4 remaining) [2022-07-19 21:02:27,137 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-19 21:02:27,137 INFO L356 BasicCegarLoop]: Path program histogram: [1] [2022-07-19 21:02:27,138 WARN L231 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2022-07-19 21:02:27,138 INFO L509 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2022-07-19 21:02:27,190 INFO L135 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-07-19 21:02:27,192 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 165 places, 177 transitions, 375 flow [2022-07-19 21:02:27,240 INFO L129 PetriNetUnfolder]: 22/214 cut-off events. [2022-07-19 21:02:27,245 INFO L130 PetriNetUnfolder]: For 7/7 co-relation queries the response was YES. [2022-07-19 21:02:27,248 INFO L84 FinitePrefix]: Finished finitePrefix Result has 230 conditions, 214 events. 22/214 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 556 event pairs, 0 based on Foata normal form. 0/185 useless extension candidates. Maximal degree in co-relation 157. Up to 8 conditions per place. [2022-07-19 21:02:27,249 INFO L82 GeneralOperation]: Start removeDead. Operand has 165 places, 177 transitions, 375 flow [2022-07-19 21:02:27,251 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 165 places, 177 transitions, 375 flow [2022-07-19 21:02:27,253 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-19 21:02:27,254 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@6df6a914, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@4d472ffe [2022-07-19 21:02:27,255 INFO L358 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2022-07-19 21:02:27,265 INFO L129 PetriNetUnfolder]: 9/121 cut-off events. [2022-07-19 21:02:27,269 INFO L130 PetriNetUnfolder]: For 7/7 co-relation queries the response was YES. [2022-07-19 21:02:27,269 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:02:27,270 INFO L200 CegarLoopForPetriNet]: trace histogram [4, 4, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 21:02:27,270 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-07-19 21:02:27,271 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:02:27,271 INFO L85 PathProgramCache]: Analyzing trace with hash -766780624, now seen corresponding path program 1 times [2022-07-19 21:02:27,273 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:02:27,273 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1887566591] [2022-07-19 21:02:27,273 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:02:27,274 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:02:27,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-19 21:02:27,314 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-07-19 21:02:27,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-19 21:02:27,333 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-07-19 21:02:27,333 INFO L271 BasicCegarLoop]: Counterexample is feasible [2022-07-19 21:02:27,334 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (4 of 5 remaining) [2022-07-19 21:02:27,334 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (3 of 5 remaining) [2022-07-19 21:02:27,334 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (2 of 5 remaining) [2022-07-19 21:02:27,334 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (1 of 5 remaining) [2022-07-19 21:02:27,335 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (0 of 5 remaining) [2022-07-19 21:02:27,335 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-07-19 21:02:27,336 INFO L356 BasicCegarLoop]: Path program histogram: [1] [2022-07-19 21:02:27,336 WARN L231 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis [2022-07-19 21:02:27,337 INFO L509 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances. [2022-07-19 21:02:27,363 INFO L135 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-07-19 21:02:27,369 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 210 places, 226 transitions, 484 flow [2022-07-19 21:02:27,413 INFO L129 PetriNetUnfolder]: 29/276 cut-off events. [2022-07-19 21:02:27,414 INFO L130 PetriNetUnfolder]: For 16/16 co-relation queries the response was YES. [2022-07-19 21:02:27,419 INFO L84 FinitePrefix]: Finished finitePrefix Result has 299 conditions, 276 events. 29/276 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 832 event pairs, 0 based on Foata normal form. 0/238 useless extension candidates. Maximal degree in co-relation 222. Up to 10 conditions per place. [2022-07-19 21:02:27,419 INFO L82 GeneralOperation]: Start removeDead. Operand has 210 places, 226 transitions, 484 flow [2022-07-19 21:02:27,424 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 210 places, 226 transitions, 484 flow [2022-07-19 21:02:27,426 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-19 21:02:27,427 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@6df6a914, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@4d472ffe [2022-07-19 21:02:27,427 INFO L358 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2022-07-19 21:02:27,438 INFO L129 PetriNetUnfolder]: 11/126 cut-off events. [2022-07-19 21:02:27,438 INFO L130 PetriNetUnfolder]: For 10/10 co-relation queries the response was YES. [2022-07-19 21:02:27,438 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:02:27,439 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] [2022-07-19 21:02:27,442 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2022-07-19 21:02:27,442 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:02:27,442 INFO L85 PathProgramCache]: Analyzing trace with hash 584646042, now seen corresponding path program 1 times [2022-07-19 21:02:27,442 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:02:27,443 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1334894187] [2022-07-19 21:02:27,443 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:02:27,443 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:02:27,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:02:27,532 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 21:02:27,533 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:02:27,533 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1334894187] [2022-07-19 21:02:27,534 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1334894187] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:02:27,534 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:02:27,534 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-19 21:02:27,534 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1286091950] [2022-07-19 21:02:27,535 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:02:27,539 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-07-19 21:02:27,540 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:02:27,560 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-07-19 21:02:27,561 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-07-19 21:02:27,565 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 196 out of 226 [2022-07-19 21:02:27,572 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 210 places, 226 transitions, 484 flow. Second operand has 2 states, 2 states have (on average 197.5) internal successors, (395), 2 states have internal predecessors, (395), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:02:27,572 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:02:27,572 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 196 of 226 [2022-07-19 21:02:27,573 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:02:29,597 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-07-19 21:02:31,774 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-07-19 21:02:33,977 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-07-19 21:02:36,169 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.18s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-07-19 21:02:36,241 INFO L129 PetriNetUnfolder]: 64/812 cut-off events. [2022-07-19 21:02:36,241 INFO L130 PetriNetUnfolder]: For 159/159 co-relation queries the response was YES. [2022-07-19 21:02:36,251 INFO L84 FinitePrefix]: Finished finitePrefix Result has 978 conditions, 812 events. 64/812 cut-off events. For 159/159 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 5125 event pairs, 34 based on Foata normal form. 164/909 useless extension candidates. Maximal degree in co-relation 441. Up to 65 conditions per place. [2022-07-19 21:02:36,256 INFO L132 encePairwiseOnDemand]: 208/226 looper letters, 8 selfloop transitions, 0 changer transitions 0/199 dead transitions. [2022-07-19 21:02:36,256 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 201 places, 199 transitions, 446 flow [2022-07-19 21:02:36,423 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-07-19 21:02:36,425 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2022-07-19 21:02:36,434 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 418 transitions. [2022-07-19 21:02:36,439 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.9247787610619469 [2022-07-19 21:02:36,439 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 418 transitions. [2022-07-19 21:02:36,440 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 418 transitions. [2022-07-19 21:02:36,443 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:02:36,446 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 418 transitions. [2022-07-19 21:02:36,449 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 209.0) internal successors, (418), 2 states have internal predecessors, (418), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:02:36,453 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 226.0) internal successors, (678), 3 states have internal predecessors, (678), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:02:36,453 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 226.0) internal successors, (678), 3 states have internal predecessors, (678), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:02:36,454 INFO L186 Difference]: Start difference. First operand has 210 places, 226 transitions, 484 flow. Second operand 2 states and 418 transitions. [2022-07-19 21:02:36,455 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 201 places, 199 transitions, 446 flow [2022-07-19 21:02:36,460 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 201 places, 199 transitions, 434 flow, removed 6 selfloop flow, removed 0 redundant places. [2022-07-19 21:02:36,464 INFO L242 Difference]: Finished difference. Result has 201 places, 199 transitions, 418 flow [2022-07-19 21:02:36,466 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=226, PETRI_DIFFERENCE_MINUEND_FLOW=418, PETRI_DIFFERENCE_MINUEND_PLACES=200, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=199, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=199, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=418, PETRI_PLACES=201, PETRI_TRANSITIONS=199} [2022-07-19 21:02:36,470 INFO L279 CegarLoopForPetriNet]: 210 programPoint places, -9 predicate places. [2022-07-19 21:02:36,470 INFO L495 AbstractCegarLoop]: Abstraction has has 201 places, 199 transitions, 418 flow [2022-07-19 21:02:36,470 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 197.5) internal successors, (395), 2 states have internal predecessors, (395), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:02:36,471 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:02:36,471 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] [2022-07-19 21:02:36,471 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-07-19 21:02:36,471 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2022-07-19 21:02:36,472 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:02:36,472 INFO L85 PathProgramCache]: Analyzing trace with hash -836950257, now seen corresponding path program 1 times [2022-07-19 21:02:36,472 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:02:36,472 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1173636487] [2022-07-19 21:02:36,472 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:02:36,473 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:02:36,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:02:36,580 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 21:02:36,581 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:02:36,581 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1173636487] [2022-07-19 21:02:36,581 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1173636487] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:02:36,581 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:02:36,581 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-19 21:02:36,582 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [455338299] [2022-07-19 21:02:36,582 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:02:36,582 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-19 21:02:36,582 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:02:36,583 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-19 21:02:36,583 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-19 21:02:36,584 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 170 out of 226 [2022-07-19 21:02:36,585 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 201 places, 199 transitions, 418 flow. Second operand has 5 states, 5 states have (on average 171.4) internal successors, (857), 5 states have internal predecessors, (857), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:02:36,585 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:02:36,585 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 170 of 226 [2022-07-19 21:02:36,586 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:02:38,604 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-07-19 21:02:40,789 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-07-19 21:02:43,006 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-07-19 21:02:45,204 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-07-19 21:02:47,362 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.16s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-07-19 21:02:49,534 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-07-19 21:02:51,694 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.16s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-07-19 21:02:53,974 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-07-19 21:02:56,154 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-07-19 21:02:58,323 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.17s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-07-19 21:03:00,498 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.17s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-07-19 21:03:05,979 INFO L129 PetriNetUnfolder]: 20999/48612 cut-off events. [2022-07-19 21:03:05,980 INFO L130 PetriNetUnfolder]: For 2923/2923 co-relation queries the response was YES. [2022-07-19 21:03:06,281 INFO L84 FinitePrefix]: Finished finitePrefix Result has 80482 conditions, 48612 events. 20999/48612 cut-off events. For 2923/2923 co-relation queries the response was YES. Maximal size of possible extension queue 1675. Compared 562159 event pairs, 6278 based on Foata normal form. 0/45003 useless extension candidates. Maximal degree in co-relation 80475. Up to 20204 conditions per place. [2022-07-19 21:03:06,577 INFO L132 encePairwiseOnDemand]: 204/226 looper letters, 66 selfloop transitions, 34 changer transitions 0/265 dead transitions. [2022-07-19 21:03:06,577 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 207 places, 265 transitions, 810 flow [2022-07-19 21:03:06,578 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-19 21:03:06,578 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-07-19 21:03:06,580 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1295 transitions. [2022-07-19 21:03:06,581 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8185840707964602 [2022-07-19 21:03:06,581 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1295 transitions. [2022-07-19 21:03:06,581 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1295 transitions. [2022-07-19 21:03:06,581 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:03:06,582 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1295 transitions. [2022-07-19 21:03:06,588 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 185.0) internal successors, (1295), 7 states have internal predecessors, (1295), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:03:06,592 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 226.0) internal successors, (1808), 8 states have internal predecessors, (1808), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:03:06,593 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 226.0) internal successors, (1808), 8 states have internal predecessors, (1808), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:03:06,593 INFO L186 Difference]: Start difference. First operand has 201 places, 199 transitions, 418 flow. Second operand 7 states and 1295 transitions. [2022-07-19 21:03:06,593 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 207 places, 265 transitions, 810 flow [2022-07-19 21:03:06,598 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 207 places, 265 transitions, 810 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-07-19 21:03:06,605 INFO L242 Difference]: Finished difference. Result has 212 places, 233 transitions, 667 flow [2022-07-19 21:03:06,605 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=226, PETRI_DIFFERENCE_MINUEND_FLOW=418, PETRI_DIFFERENCE_MINUEND_PLACES=201, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=199, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=181, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=667, PETRI_PLACES=212, PETRI_TRANSITIONS=233} [2022-07-19 21:03:06,606 INFO L279 CegarLoopForPetriNet]: 210 programPoint places, 2 predicate places. [2022-07-19 21:03:06,606 INFO L495 AbstractCegarLoop]: Abstraction has has 212 places, 233 transitions, 667 flow [2022-07-19 21:03:06,607 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 171.4) internal successors, (857), 5 states have internal predecessors, (857), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:03:06,607 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:03:06,607 INFO L200 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 21:03:06,607 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-07-19 21:03:06,609 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2022-07-19 21:03:06,609 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:03:06,609 INFO L85 PathProgramCache]: Analyzing trace with hash -1551430632, now seen corresponding path program 1 times [2022-07-19 21:03:06,610 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:03:06,610 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1415754059] [2022-07-19 21:03:06,610 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:03:06,610 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:03:06,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-19 21:03:06,635 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-07-19 21:03:06,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-19 21:03:06,663 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-07-19 21:03:06,664 INFO L271 BasicCegarLoop]: Counterexample is feasible [2022-07-19 21:03:06,664 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (5 of 6 remaining) [2022-07-19 21:03:06,664 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (4 of 6 remaining) [2022-07-19 21:03:06,664 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (3 of 6 remaining) [2022-07-19 21:03:06,664 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (2 of 6 remaining) [2022-07-19 21:03:06,665 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (1 of 6 remaining) [2022-07-19 21:03:06,665 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (0 of 6 remaining) [2022-07-19 21:03:06,665 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-07-19 21:03:06,665 INFO L356 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2022-07-19 21:03:06,666 WARN L231 ceAbstractionStarter]: 4 thread instances were not sufficient, I will increase this number and restart the analysis [2022-07-19 21:03:06,666 INFO L509 ceAbstractionStarter]: Constructing petrified ICFG for 5 thread instances. [2022-07-19 21:03:06,693 INFO L135 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-07-19 21:03:06,695 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 255 places, 275 transitions, 595 flow [2022-07-19 21:03:06,728 INFO L129 PetriNetUnfolder]: 36/338 cut-off events. [2022-07-19 21:03:06,728 INFO L130 PetriNetUnfolder]: For 30/30 co-relation queries the response was YES. [2022-07-19 21:03:06,732 INFO L84 FinitePrefix]: Finished finitePrefix Result has 369 conditions, 338 events. 36/338 cut-off events. For 30/30 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 1120 event pairs, 0 based on Foata normal form. 0/291 useless extension candidates. Maximal degree in co-relation 289. Up to 12 conditions per place. [2022-07-19 21:03:06,732 INFO L82 GeneralOperation]: Start removeDead. Operand has 255 places, 275 transitions, 595 flow [2022-07-19 21:03:06,736 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 255 places, 275 transitions, 595 flow [2022-07-19 21:03:06,737 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-19 21:03:06,740 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@6df6a914, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@4d472ffe [2022-07-19 21:03:06,740 INFO L358 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2022-07-19 21:03:06,745 INFO L129 PetriNetUnfolder]: 10/123 cut-off events. [2022-07-19 21:03:06,745 INFO L130 PetriNetUnfolder]: For 10/10 co-relation queries the response was YES. [2022-07-19 21:03:06,745 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:03:06,745 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] [2022-07-19 21:03:06,746 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-07-19 21:03:06,746 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:03:06,746 INFO L85 PathProgramCache]: Analyzing trace with hash 1234181593, now seen corresponding path program 1 times [2022-07-19 21:03:06,746 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:03:06,746 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1257323172] [2022-07-19 21:03:06,746 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:03:06,747 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:03:06,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:03:06,781 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 21:03:06,782 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:03:06,783 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1257323172] [2022-07-19 21:03:06,783 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1257323172] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:03:06,783 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:03:06,783 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-19 21:03:06,783 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1433925468] [2022-07-19 21:03:06,783 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:03:06,784 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-07-19 21:03:06,784 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:03:06,784 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-07-19 21:03:06,784 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-07-19 21:03:06,785 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 238 out of 275 [2022-07-19 21:03:06,786 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 255 places, 275 transitions, 595 flow. Second operand has 2 states, 2 states have (on average 239.5) internal successors, (479), 2 states have internal predecessors, (479), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:03:06,786 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:03:06,786 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 238 of 275 [2022-07-19 21:03:06,786 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:03:08,801 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-07-19 21:03:10,986 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-07-19 21:03:13,180 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-07-19 21:03:13,483 INFO L129 PetriNetUnfolder]: 160/1684 cut-off events. [2022-07-19 21:03:13,483 INFO L130 PetriNetUnfolder]: For 511/511 co-relation queries the response was YES. [2022-07-19 21:03:13,501 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2091 conditions, 1684 events. 160/1684 cut-off events. For 511/511 co-relation queries the response was YES. Maximal size of possible extension queue 51. Compared 13415 event pairs, 98 based on Foata normal form. 420/1965 useless extension candidates. Maximal degree in co-relation 981. Up to 161 conditions per place. [2022-07-19 21:03:13,508 INFO L132 encePairwiseOnDemand]: 253/275 looper letters, 10 selfloop transitions, 0 changer transitions 0/243 dead transitions. [2022-07-19 21:03:13,508 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 245 places, 243 transitions, 551 flow [2022-07-19 21:03:13,671 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-07-19 21:03:13,672 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2022-07-19 21:03:13,672 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 508 transitions. [2022-07-19 21:03:13,673 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.9236363636363636 [2022-07-19 21:03:13,673 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 508 transitions. [2022-07-19 21:03:13,673 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 508 transitions. [2022-07-19 21:03:13,673 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:03:13,673 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 508 transitions. [2022-07-19 21:03:13,674 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 254.0) internal successors, (508), 2 states have internal predecessors, (508), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:03:13,675 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 275.0) internal successors, (825), 3 states have internal predecessors, (825), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:03:13,675 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 275.0) internal successors, (825), 3 states have internal predecessors, (825), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:03:13,675 INFO L186 Difference]: Start difference. First operand has 255 places, 275 transitions, 595 flow. Second operand 2 states and 508 transitions. [2022-07-19 21:03:13,675 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 245 places, 243 transitions, 551 flow [2022-07-19 21:03:13,677 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 245 places, 243 transitions, 531 flow, removed 10 selfloop flow, removed 0 redundant places. [2022-07-19 21:03:13,681 INFO L242 Difference]: Finished difference. Result has 245 places, 243 transitions, 511 flow [2022-07-19 21:03:13,681 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=275, PETRI_DIFFERENCE_MINUEND_FLOW=511, PETRI_DIFFERENCE_MINUEND_PLACES=244, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=243, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=243, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=511, PETRI_PLACES=245, PETRI_TRANSITIONS=243} [2022-07-19 21:03:13,682 INFO L279 CegarLoopForPetriNet]: 255 programPoint places, -10 predicate places. [2022-07-19 21:03:13,682 INFO L495 AbstractCegarLoop]: Abstraction has has 245 places, 243 transitions, 511 flow [2022-07-19 21:03:13,682 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 239.5) internal successors, (479), 2 states have internal predecessors, (479), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:03:13,682 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:03:13,683 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] [2022-07-19 21:03:13,683 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-07-19 21:03:13,683 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-07-19 21:03:13,683 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:03:13,683 INFO L85 PathProgramCache]: Analyzing trace with hash -433374094, now seen corresponding path program 1 times [2022-07-19 21:03:13,683 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:03:13,683 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1976780272] [2022-07-19 21:03:13,684 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:03:13,684 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:03:13,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:03:13,768 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 21:03:13,768 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:03:13,768 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1976780272] [2022-07-19 21:03:13,768 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1976780272] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:03:13,768 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:03:13,769 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-19 21:03:13,769 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1685483448] [2022-07-19 21:03:13,769 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:03:13,769 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-19 21:03:13,769 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:03:13,770 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-19 21:03:13,770 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-19 21:03:13,771 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 206 out of 275 [2022-07-19 21:03:13,772 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 245 places, 243 transitions, 511 flow. Second operand has 5 states, 5 states have (on average 207.4) internal successors, (1037), 5 states have internal predecessors, (1037), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:03:13,772 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:03:13,772 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 206 of 275 [2022-07-19 21:03:13,772 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:03:15,780 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-07-19 21:03:17,952 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-07-19 21:03:20,112 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.16s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-07-19 21:03:22,312 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-07-19 21:03:24,469 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.16s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-07-19 21:03:26,647 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-07-19 21:03:28,815 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-07-19 21:03:31,006 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-07-19 21:03:33,178 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-07-19 21:03:35,343 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.17s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-07-19 21:03:37,506 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.16s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-07-19 21:03:39,672 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.17s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-07-19 21:03:41,841 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.17s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-07-19 21:03:44,009 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.17s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-07-19 21:03:46,191 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-07-19 21:03:48,361 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.17s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-07-19 21:03:50,539 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-07-19 21:03:52,722 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers []