./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/pthread-wmm/rfi002_tso.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 6c24879c 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-wmm/rfi002_tso.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 48e6a57243e80a87d178da358ff4ad1dd63b86003507ef0dec3764d15038130a --- Real Ultimate output --- This is Ultimate 0.2.2-?-6c24879 [2022-07-12 10:08:26,842 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-12 10:08:26,852 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-12 10:08:26,889 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-12 10:08:26,890 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-12 10:08:26,891 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-12 10:08:26,892 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-12 10:08:26,893 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-12 10:08:26,894 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-12 10:08:26,894 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-12 10:08:26,895 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-12 10:08:26,896 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-12 10:08:26,896 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-12 10:08:26,897 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-12 10:08:26,898 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-12 10:08:26,898 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-12 10:08:26,899 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-12 10:08:26,902 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-12 10:08:26,903 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-12 10:08:26,908 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-12 10:08:26,912 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-12 10:08:26,913 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-12 10:08:26,913 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-12 10:08:26,917 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-12 10:08:26,918 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-12 10:08:26,920 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-12 10:08:26,921 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-12 10:08:26,921 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-12 10:08:26,922 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-12 10:08:26,922 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-12 10:08:26,923 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-12 10:08:26,924 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-12 10:08:26,925 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-12 10:08:26,925 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-12 10:08:26,926 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-12 10:08:26,927 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-12 10:08:26,927 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-12 10:08:26,927 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-12 10:08:26,928 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-12 10:08:26,928 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-12 10:08:26,928 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-12 10:08:26,929 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-12 10:08:26,931 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-12 10:08:26,949 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-12 10:08:26,950 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-12 10:08:26,950 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-12 10:08:26,950 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-12 10:08:26,951 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-12 10:08:26,951 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-12 10:08:26,951 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-12 10:08:26,952 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-12 10:08:26,952 INFO L138 SettingsManager]: * Use SBE=true [2022-07-12 10:08:26,952 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-12 10:08:26,952 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-12 10:08:26,952 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-12 10:08:26,952 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-12 10:08:26,953 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-12 10:08:26,953 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-12 10:08:26,953 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-12 10:08:26,953 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-12 10:08:26,953 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-12 10:08:26,953 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-12 10:08:26,953 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-12 10:08:26,954 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-12 10:08:26,954 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-12 10:08:26,954 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-12 10:08:26,954 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-12 10:08:26,954 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-12 10:08:26,955 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-12 10:08:26,955 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-12 10:08:26,955 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-12 10:08:26,955 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-12 10:08:26,956 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-12 10:08:26,956 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-12 10:08:26,956 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-12 10:08:26,956 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-12 10:08:26,956 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 48e6a57243e80a87d178da358ff4ad1dd63b86003507ef0dec3764d15038130a [2022-07-12 10:08:27,171 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-12 10:08:27,194 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-12 10:08:27,196 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-12 10:08:27,196 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-12 10:08:27,197 INFO L275 PluginConnector]: CDTParser initialized [2022-07-12 10:08:27,198 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/pthread-wmm/rfi002_tso.i [2022-07-12 10:08:27,251 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/72553a80f/a389b1cffbe342bfbd4f7250b5ef9557/FLAGed6a22e40 [2022-07-12 10:08:27,689 INFO L306 CDTParser]: Found 1 translation units. [2022-07-12 10:08:27,689 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-wmm/rfi002_tso.i [2022-07-12 10:08:27,702 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/72553a80f/a389b1cffbe342bfbd4f7250b5ef9557/FLAGed6a22e40 [2022-07-12 10:08:27,711 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/72553a80f/a389b1cffbe342bfbd4f7250b5ef9557 [2022-07-12 10:08:27,716 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-12 10:08:27,717 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-12 10:08:27,718 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-12 10:08:27,718 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-12 10:08:27,720 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-12 10:08:27,720 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.07 10:08:27" (1/1) ... [2022-07-12 10:08:27,721 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@45942e08 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:08:27, skipping insertion in model container [2022-07-12 10:08:27,721 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.07 10:08:27" (1/1) ... [2022-07-12 10:08:27,727 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-12 10:08:27,761 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-12 10:08:27,906 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-wmm/rfi002_tso.i[987,1000] [2022-07-12 10:08:28,107 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-12 10:08:28,117 INFO L203 MainTranslator]: Completed pre-run [2022-07-12 10:08:28,127 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-wmm/rfi002_tso.i[987,1000] [2022-07-12 10:08:28,166 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-12 10:08:28,203 INFO L208 MainTranslator]: Completed translation [2022-07-12 10:08:28,203 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:08:28 WrapperNode [2022-07-12 10:08:28,204 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-12 10:08:28,204 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-12 10:08:28,205 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-12 10:08:28,205 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-12 10:08:28,209 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:08:28" (1/1) ... [2022-07-12 10:08:28,235 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:08:28" (1/1) ... [2022-07-12 10:08:28,283 INFO L137 Inliner]: procedures = 175, calls = 48, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 551 [2022-07-12 10:08:28,283 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-12 10:08:28,284 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-12 10:08:28,284 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-12 10:08:28,284 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-12 10:08:28,292 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:08:28" (1/1) ... [2022-07-12 10:08:28,292 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:08:28" (1/1) ... [2022-07-12 10:08:28,304 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:08:28" (1/1) ... [2022-07-12 10:08:28,311 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:08:28" (1/1) ... [2022-07-12 10:08:28,324 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:08:28" (1/1) ... [2022-07-12 10:08:28,339 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:08:28" (1/1) ... [2022-07-12 10:08:28,341 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:08:28" (1/1) ... [2022-07-12 10:08:28,345 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-12 10:08:28,355 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-12 10:08:28,356 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-12 10:08:28,356 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-12 10:08:28,357 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:08:28" (1/1) ... [2022-07-12 10:08:28,365 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-12 10:08:28,376 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 10:08:28,386 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) [2022-07-12 10:08:28,406 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 [2022-07-12 10:08:28,420 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-07-12 10:08:28,420 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-07-12 10:08:28,420 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-12 10:08:28,420 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-07-12 10:08:28,420 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-07-12 10:08:28,420 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2022-07-12 10:08:28,421 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2022-07-12 10:08:28,421 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2022-07-12 10:08:28,421 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2022-07-12 10:08:28,421 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-12 10:08:28,421 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-07-12 10:08:28,421 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-12 10:08:28,421 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-12 10:08:28,423 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-07-12 10:08:28,608 INFO L234 CfgBuilder]: Building ICFG [2022-07-12 10:08:28,609 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-12 10:08:29,259 INFO L275 CfgBuilder]: Performing block encoding [2022-07-12 10:08:29,743 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-12 10:08:29,744 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-07-12 10:08:29,745 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.07 10:08:29 BoogieIcfgContainer [2022-07-12 10:08:29,746 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-12 10:08:29,747 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-12 10:08:29,747 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-12 10:08:29,750 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-12 10:08:29,750 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.07 10:08:27" (1/3) ... [2022-07-12 10:08:29,751 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3c1ad8c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.07 10:08:29, skipping insertion in model container [2022-07-12 10:08:29,751 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:08:28" (2/3) ... [2022-07-12 10:08:29,751 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3c1ad8c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.07 10:08:29, skipping insertion in model container [2022-07-12 10:08:29,751 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.07 10:08:29" (3/3) ... [2022-07-12 10:08:29,752 INFO L111 eAbstractionObserver]: Analyzing ICFG rfi002_tso.i [2022-07-12 10:08:29,756 WARN L143 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-07-12 10:08:29,762 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-12 10:08:29,763 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations. [2022-07-12 10:08:29,763 INFO L509 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-07-12 10:08:29,840 INFO L135 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-07-12 10:08:29,876 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 119 places, 114 transitions, 238 flow [2022-07-12 10:08:29,917 INFO L129 PetriNetUnfolder]: 2/112 cut-off events. [2022-07-12 10:08:29,917 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-07-12 10:08:29,920 INFO L84 FinitePrefix]: Finished finitePrefix Result has 119 conditions, 112 events. 2/112 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 53 event pairs, 0 based on Foata normal form. 0/107 useless extension candidates. Maximal degree in co-relation 59. Up to 2 conditions per place. [2022-07-12 10:08:29,920 INFO L82 GeneralOperation]: Start removeDead. Operand has 119 places, 114 transitions, 238 flow [2022-07-12 10:08:29,924 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 117 places, 112 transitions, 230 flow [2022-07-12 10:08:29,937 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-12 10:08:29,941 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@1fbd6d82, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@6128aa30 [2022-07-12 10:08:29,942 INFO L358 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2022-07-12 10:08:29,951 INFO L129 PetriNetUnfolder]: 0/72 cut-off events. [2022-07-12 10:08:29,951 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-07-12 10:08:29,952 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:08:29,952 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] [2022-07-12 10:08:29,953 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting P1Err0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, P1Err1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-07-12 10:08:29,956 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:08:29,956 INFO L85 PathProgramCache]: Analyzing trace with hash 391948507, now seen corresponding path program 1 times [2022-07-12 10:08:29,962 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:08:29,962 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [684282214] [2022-07-12 10:08:29,963 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:08:29,963 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:08:30,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:08:30,180 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:08:30,180 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:08:30,180 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [684282214] [2022-07-12 10:08:30,180 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [684282214] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:08:30,181 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:08:30,181 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-12 10:08:30,182 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1877977833] [2022-07-12 10:08:30,182 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:08:30,187 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-12 10:08:30,188 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:08:30,210 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-12 10:08:30,211 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-12 10:08:30,214 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 96 out of 114 [2022-07-12 10:08:30,218 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 117 places, 112 transitions, 230 flow. Second operand has 3 states, 3 states have (on average 97.33333333333333) internal successors, (292), 3 states have internal predecessors, (292), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:08:30,218 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:08:30,218 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 96 of 114 [2022-07-12 10:08:30,219 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:08:30,413 INFO L129 PetriNetUnfolder]: 111/381 cut-off events. [2022-07-12 10:08:30,413 INFO L130 PetriNetUnfolder]: For 5/5 co-relation queries the response was YES. [2022-07-12 10:08:30,414 INFO L84 FinitePrefix]: Finished finitePrefix Result has 595 conditions, 381 events. 111/381 cut-off events. For 5/5 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 1603 event pairs, 9 based on Foata normal form. 20/358 useless extension candidates. Maximal degree in co-relation 532. Up to 175 conditions per place. [2022-07-12 10:08:30,417 INFO L132 encePairwiseOnDemand]: 109/114 looper letters, 17 selfloop transitions, 2 changer transitions 0/113 dead transitions. [2022-07-12 10:08:30,419 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 117 places, 113 transitions, 270 flow [2022-07-12 10:08:30,421 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-12 10:08:30,423 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-07-12 10:08:30,431 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 312 transitions. [2022-07-12 10:08:30,433 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.9122807017543859 [2022-07-12 10:08:30,433 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 312 transitions. [2022-07-12 10:08:30,434 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 312 transitions. [2022-07-12 10:08:30,434 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:08:30,436 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 312 transitions. [2022-07-12 10:08:30,446 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 104.0) internal successors, (312), 3 states have internal predecessors, (312), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:08:30,452 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 114.0) internal successors, (456), 4 states have internal predecessors, (456), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:08:30,453 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 114.0) internal successors, (456), 4 states have internal predecessors, (456), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:08:30,454 INFO L186 Difference]: Start difference. First operand has 117 places, 112 transitions, 230 flow. Second operand 3 states and 312 transitions. [2022-07-12 10:08:30,455 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 117 places, 113 transitions, 270 flow [2022-07-12 10:08:30,461 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 115 places, 113 transitions, 268 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-07-12 10:08:30,463 INFO L242 Difference]: Finished difference. Result has 115 places, 108 transitions, 224 flow [2022-07-12 10:08:30,465 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=114, PETRI_DIFFERENCE_MINUEND_FLOW=220, PETRI_DIFFERENCE_MINUEND_PLACES=113, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=108, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=106, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=224, PETRI_PLACES=115, PETRI_TRANSITIONS=108} [2022-07-12 10:08:30,468 INFO L279 CegarLoopForPetriNet]: 117 programPoint places, -2 predicate places. [2022-07-12 10:08:30,468 INFO L495 AbstractCegarLoop]: Abstraction has has 115 places, 108 transitions, 224 flow [2022-07-12 10:08:30,469 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 97.33333333333333) internal successors, (292), 3 states have internal predecessors, (292), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:08:30,469 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:08:30,469 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] [2022-07-12 10:08:30,469 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-12 10:08:30,469 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting P1Err1ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, P1Err1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-07-12 10:08:30,470 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:08:30,470 INFO L85 PathProgramCache]: Analyzing trace with hash -734495959, now seen corresponding path program 1 times [2022-07-12 10:08:30,470 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:08:30,470 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1800360399] [2022-07-12 10:08:30,470 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:08:30,470 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:08:30,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:08:30,571 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:08:30,571 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:08:30,571 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1800360399] [2022-07-12 10:08:30,571 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1800360399] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:08:30,572 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:08:30,572 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-12 10:08:30,572 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [355615746] [2022-07-12 10:08:30,572 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:08:30,573 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-12 10:08:30,573 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:08:30,573 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-12 10:08:30,573 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-12 10:08:30,574 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 96 out of 114 [2022-07-12 10:08:30,574 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 115 places, 108 transitions, 224 flow. Second operand has 3 states, 3 states have (on average 97.66666666666667) internal successors, (293), 3 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:08:30,574 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:08:30,574 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 96 of 114 [2022-07-12 10:08:30,574 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:08:30,688 INFO L129 PetriNetUnfolder]: 94/419 cut-off events. [2022-07-12 10:08:30,689 INFO L130 PetriNetUnfolder]: For 12/12 co-relation queries the response was YES. [2022-07-12 10:08:30,697 INFO L84 FinitePrefix]: Finished finitePrefix Result has 616 conditions, 419 events. 94/419 cut-off events. For 12/12 co-relation queries the response was YES. Maximal size of possible extension queue 29. Compared 2013 event pairs, 26 based on Foata normal form. 0/388 useless extension candidates. Maximal degree in co-relation 553. Up to 117 conditions per place. [2022-07-12 10:08:30,700 INFO L132 encePairwiseOnDemand]: 111/114 looper letters, 16 selfloop transitions, 2 changer transitions 0/112 dead transitions. [2022-07-12 10:08:30,700 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 116 places, 112 transitions, 268 flow [2022-07-12 10:08:30,701 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-12 10:08:30,701 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-07-12 10:08:30,702 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 307 transitions. [2022-07-12 10:08:30,704 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8976608187134503 [2022-07-12 10:08:30,704 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 307 transitions. [2022-07-12 10:08:30,704 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 307 transitions. [2022-07-12 10:08:30,704 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:08:30,704 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 307 transitions. [2022-07-12 10:08:30,706 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 102.33333333333333) internal successors, (307), 3 states have internal predecessors, (307), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:08:30,708 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 114.0) internal successors, (456), 4 states have internal predecessors, (456), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:08:30,708 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 114.0) internal successors, (456), 4 states have internal predecessors, (456), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:08:30,708 INFO L186 Difference]: Start difference. First operand has 115 places, 108 transitions, 224 flow. Second operand 3 states and 307 transitions. [2022-07-12 10:08:30,708 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 116 places, 112 transitions, 268 flow [2022-07-12 10:08:30,709 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 114 places, 112 transitions, 264 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-07-12 10:08:30,712 INFO L242 Difference]: Finished difference. Result has 114 places, 107 transitions, 222 flow [2022-07-12 10:08:30,712 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=114, PETRI_DIFFERENCE_MINUEND_FLOW=218, PETRI_DIFFERENCE_MINUEND_PLACES=112, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=107, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=105, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=222, PETRI_PLACES=114, PETRI_TRANSITIONS=107} [2022-07-12 10:08:30,713 INFO L279 CegarLoopForPetriNet]: 117 programPoint places, -3 predicate places. [2022-07-12 10:08:30,713 INFO L495 AbstractCegarLoop]: Abstraction has has 114 places, 107 transitions, 222 flow [2022-07-12 10:08:30,713 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 97.66666666666667) internal successors, (293), 3 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:08:30,713 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:08:30,714 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] [2022-07-12 10:08:30,714 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-12 10:08:30,714 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, P1Err1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-07-12 10:08:30,715 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:08:30,715 INFO L85 PathProgramCache]: Analyzing trace with hash 26389779, now seen corresponding path program 1 times [2022-07-12 10:08:30,715 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:08:30,716 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1644798804] [2022-07-12 10:08:30,716 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:08:30,716 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:08:30,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:08:30,917 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:08:30,918 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:08:30,918 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1644798804] [2022-07-12 10:08:30,918 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1644798804] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:08:30,919 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:08:30,919 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-12 10:08:30,919 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1150028161] [2022-07-12 10:08:30,920 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:08:30,921 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-12 10:08:30,921 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:08:30,921 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-12 10:08:30,922 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-12 10:08:30,923 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 90 out of 114 [2022-07-12 10:08:30,924 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 114 places, 107 transitions, 222 flow. Second operand has 6 states, 6 states have (on average 91.66666666666667) internal successors, (550), 6 states have internal predecessors, (550), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:08:30,924 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:08:30,924 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 90 of 114 [2022-07-12 10:08:30,924 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:08:31,316 INFO L129 PetriNetUnfolder]: 336/1001 cut-off events. [2022-07-12 10:08:31,316 INFO L130 PetriNetUnfolder]: For 23/23 co-relation queries the response was YES. [2022-07-12 10:08:31,318 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1625 conditions, 1001 events. 336/1001 cut-off events. For 23/23 co-relation queries the response was YES. Maximal size of possible extension queue 59. Compared 6080 event pairs, 82 based on Foata normal form. 0/966 useless extension candidates. Maximal degree in co-relation 1561. Up to 229 conditions per place. [2022-07-12 10:08:31,321 INFO L132 encePairwiseOnDemand]: 108/114 looper letters, 20 selfloop transitions, 2 changer transitions 52/153 dead transitions. [2022-07-12 10:08:31,321 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 122 places, 153 transitions, 450 flow [2022-07-12 10:08:31,321 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-12 10:08:31,322 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-07-12 10:08:31,323 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 877 transitions. [2022-07-12 10:08:31,324 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.854775828460039 [2022-07-12 10:08:31,324 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 877 transitions. [2022-07-12 10:08:31,324 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 877 transitions. [2022-07-12 10:08:31,324 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:08:31,324 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 877 transitions. [2022-07-12 10:08:31,327 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 97.44444444444444) internal successors, (877), 9 states have internal predecessors, (877), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:08:31,328 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 114.0) internal successors, (1140), 10 states have internal predecessors, (1140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:08:31,329 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 114.0) internal successors, (1140), 10 states have internal predecessors, (1140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:08:31,329 INFO L186 Difference]: Start difference. First operand has 114 places, 107 transitions, 222 flow. Second operand 9 states and 877 transitions. [2022-07-12 10:08:31,329 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 122 places, 153 transitions, 450 flow [2022-07-12 10:08:31,330 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 120 places, 153 transitions, 440 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-07-12 10:08:31,332 INFO L242 Difference]: Finished difference. Result has 127 places, 97 transitions, 218 flow [2022-07-12 10:08:31,332 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=114, PETRI_DIFFERENCE_MINUEND_FLOW=218, PETRI_DIFFERENCE_MINUEND_PLACES=112, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=107, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=105, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=218, PETRI_PLACES=127, PETRI_TRANSITIONS=97} [2022-07-12 10:08:31,333 INFO L279 CegarLoopForPetriNet]: 117 programPoint places, 10 predicate places. [2022-07-12 10:08:31,333 INFO L495 AbstractCegarLoop]: Abstraction has has 127 places, 97 transitions, 218 flow [2022-07-12 10:08:31,333 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 91.66666666666667) internal successors, (550), 6 states have internal predecessors, (550), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:08:31,333 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:08:31,333 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] [2022-07-12 10:08:31,333 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-07-12 10:08:31,334 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, P1Err1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-07-12 10:08:31,334 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:08:31,334 INFO L85 PathProgramCache]: Analyzing trace with hash -705378320, now seen corresponding path program 1 times [2022-07-12 10:08:31,334 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:08:31,334 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1524829400] [2022-07-12 10:08:31,334 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:08:31,334 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:08:31,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:08:31,576 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:08:31,576 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:08:31,577 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1524829400] [2022-07-12 10:08:31,577 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1524829400] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:08:31,577 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:08:31,577 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-07-12 10:08:31,577 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1891524376] [2022-07-12 10:08:31,577 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:08:31,578 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-12 10:08:31,578 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:08:31,578 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-12 10:08:31,578 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-07-12 10:08:31,579 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 87 out of 114 [2022-07-12 10:08:31,580 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 127 places, 97 transitions, 218 flow. Second operand has 8 states, 8 states have (on average 88.875) internal successors, (711), 8 states have internal predecessors, (711), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:08:31,580 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:08:31,580 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 87 of 114 [2022-07-12 10:08:31,580 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:08:31,922 INFO L129 PetriNetUnfolder]: 247/608 cut-off events. [2022-07-12 10:08:31,922 INFO L130 PetriNetUnfolder]: For 155/155 co-relation queries the response was YES. [2022-07-12 10:08:31,923 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1256 conditions, 608 events. 247/608 cut-off events. For 155/155 co-relation queries the response was YES. Maximal size of possible extension queue 35. Compared 2647 event pairs, 154 based on Foata normal form. 15/590 useless extension candidates. Maximal degree in co-relation 1183. Up to 298 conditions per place. [2022-07-12 10:08:31,924 INFO L132 encePairwiseOnDemand]: 105/114 looper letters, 23 selfloop transitions, 5 changer transitions 31/135 dead transitions. [2022-07-12 10:08:31,924 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 121 places, 135 transitions, 435 flow [2022-07-12 10:08:31,925 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-07-12 10:08:31,925 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2022-07-12 10:08:31,926 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 1018 transitions. [2022-07-12 10:08:31,927 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8118022328548644 [2022-07-12 10:08:31,927 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 1018 transitions. [2022-07-12 10:08:31,927 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 1018 transitions. [2022-07-12 10:08:31,927 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:08:31,927 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 1018 transitions. [2022-07-12 10:08:31,929 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 92.54545454545455) internal successors, (1018), 11 states have internal predecessors, (1018), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:08:31,930 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 114.0) internal successors, (1368), 12 states have internal predecessors, (1368), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:08:31,931 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 114.0) internal successors, (1368), 12 states have internal predecessors, (1368), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:08:31,931 INFO L186 Difference]: Start difference. First operand has 127 places, 97 transitions, 218 flow. Second operand 11 states and 1018 transitions. [2022-07-12 10:08:31,931 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 121 places, 135 transitions, 435 flow [2022-07-12 10:08:31,934 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 113 places, 135 transitions, 401 flow, removed 14 selfloop flow, removed 8 redundant places. [2022-07-12 10:08:31,936 INFO L242 Difference]: Finished difference. Result has 120 places, 99 transitions, 249 flow [2022-07-12 10:08:31,936 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=114, PETRI_DIFFERENCE_MINUEND_FLOW=202, PETRI_DIFFERENCE_MINUEND_PLACES=103, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=97, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=92, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=249, PETRI_PLACES=120, PETRI_TRANSITIONS=99} [2022-07-12 10:08:31,936 INFO L279 CegarLoopForPetriNet]: 117 programPoint places, 3 predicate places. [2022-07-12 10:08:31,937 INFO L495 AbstractCegarLoop]: Abstraction has has 120 places, 99 transitions, 249 flow [2022-07-12 10:08:31,937 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 88.875) internal successors, (711), 8 states have internal predecessors, (711), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:08:31,937 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:08:31,937 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] [2022-07-12 10:08:31,937 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-07-12 10:08:31,938 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, P1Err1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-07-12 10:08:31,938 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:08:31,938 INFO L85 PathProgramCache]: Analyzing trace with hash -459322686, now seen corresponding path program 1 times [2022-07-12 10:08:31,938 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:08:31,938 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [254393425] [2022-07-12 10:08:31,938 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:08:31,939 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:08:32,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:08:32,095 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:08:32,095 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:08:32,095 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [254393425] [2022-07-12 10:08:32,095 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [254393425] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:08:32,096 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:08:32,096 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-12 10:08:32,096 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2109401655] [2022-07-12 10:08:32,096 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:08:32,096 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-12 10:08:32,096 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:08:32,097 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-12 10:08:32,097 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-12 10:08:32,098 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 90 out of 114 [2022-07-12 10:08:32,098 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 120 places, 99 transitions, 249 flow. Second operand has 6 states, 6 states have (on average 92.33333333333333) internal successors, (554), 6 states have internal predecessors, (554), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:08:32,098 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:08:32,098 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 90 of 114 [2022-07-12 10:08:32,098 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:08:32,360 INFO L129 PetriNetUnfolder]: 167/495 cut-off events. [2022-07-12 10:08:32,360 INFO L130 PetriNetUnfolder]: For 473/473 co-relation queries the response was YES. [2022-07-12 10:08:32,361 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1124 conditions, 495 events. 167/495 cut-off events. For 473/473 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 2196 event pairs, 39 based on Foata normal form. 14/485 useless extension candidates. Maximal degree in co-relation 1061. Up to 126 conditions per place. [2022-07-12 10:08:32,362 INFO L132 encePairwiseOnDemand]: 108/114 looper letters, 24 selfloop transitions, 2 changer transitions 28/134 dead transitions. [2022-07-12 10:08:32,362 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 122 places, 134 transitions, 506 flow [2022-07-12 10:08:32,363 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-12 10:08:32,363 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-07-12 10:08:32,364 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 865 transitions. [2022-07-12 10:08:32,364 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8430799220272904 [2022-07-12 10:08:32,364 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 865 transitions. [2022-07-12 10:08:32,364 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 865 transitions. [2022-07-12 10:08:32,365 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:08:32,365 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 865 transitions. [2022-07-12 10:08:32,366 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 96.11111111111111) internal successors, (865), 9 states have internal predecessors, (865), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:08:32,367 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 114.0) internal successors, (1140), 10 states have internal predecessors, (1140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:08:32,368 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 114.0) internal successors, (1140), 10 states have internal predecessors, (1140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:08:32,368 INFO L186 Difference]: Start difference. First operand has 120 places, 99 transitions, 249 flow. Second operand 9 states and 865 transitions. [2022-07-12 10:08:32,368 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 122 places, 134 transitions, 506 flow [2022-07-12 10:08:32,371 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 116 places, 134 transitions, 483 flow, removed 8 selfloop flow, removed 6 redundant places. [2022-07-12 10:08:32,373 INFO L242 Difference]: Finished difference. Result has 123 places, 99 transitions, 254 flow [2022-07-12 10:08:32,373 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=114, PETRI_DIFFERENCE_MINUEND_FLOW=234, PETRI_DIFFERENCE_MINUEND_PLACES=108, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=99, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=97, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=254, PETRI_PLACES=123, PETRI_TRANSITIONS=99} [2022-07-12 10:08:32,376 INFO L279 CegarLoopForPetriNet]: 117 programPoint places, 6 predicate places. [2022-07-12 10:08:32,376 INFO L495 AbstractCegarLoop]: Abstraction has has 123 places, 99 transitions, 254 flow [2022-07-12 10:08:32,377 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 92.33333333333333) internal successors, (554), 6 states have internal predecessors, (554), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:08:32,377 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:08:32,377 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] [2022-07-12 10:08:32,377 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-07-12 10:08:32,377 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, P1Err1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-07-12 10:08:32,378 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:08:32,378 INFO L85 PathProgramCache]: Analyzing trace with hash -1724920748, now seen corresponding path program 1 times [2022-07-12 10:08:32,378 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:08:32,378 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1703105594] [2022-07-12 10:08:32,378 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:08:32,379 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:08:32,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:08:32,896 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:08:32,897 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:08:32,897 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1703105594] [2022-07-12 10:08:32,897 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1703105594] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:08:32,897 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:08:32,897 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2022-07-12 10:08:32,898 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1716394867] [2022-07-12 10:08:32,898 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:08:32,899 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-07-12 10:08:32,899 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:08:32,900 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-07-12 10:08:32,900 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=219, Unknown=0, NotChecked=0, Total=272 [2022-07-12 10:08:32,901 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 78 out of 114 [2022-07-12 10:08:32,903 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 123 places, 99 transitions, 254 flow. Second operand has 17 states, 17 states have (on average 79.47058823529412) internal successors, (1351), 17 states have internal predecessors, (1351), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:08:32,903 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:08:32,903 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 78 of 114 [2022-07-12 10:08:32,903 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:08:33,624 INFO L129 PetriNetUnfolder]: 403/885 cut-off events. [2022-07-12 10:08:33,624 INFO L130 PetriNetUnfolder]: For 869/869 co-relation queries the response was YES. [2022-07-12 10:08:33,626 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2232 conditions, 885 events. 403/885 cut-off events. For 869/869 co-relation queries the response was YES. Maximal size of possible extension queue 53. Compared 4347 event pairs, 38 based on Foata normal form. 12/875 useless extension candidates. Maximal degree in co-relation 2147. Up to 296 conditions per place. [2022-07-12 10:08:33,629 INFO L132 encePairwiseOnDemand]: 95/114 looper letters, 60 selfloop transitions, 24 changer transitions 39/190 dead transitions. [2022-07-12 10:08:33,629 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 135 places, 190 transitions, 853 flow [2022-07-12 10:08:33,630 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-07-12 10:08:33,630 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2022-07-12 10:08:33,632 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 1605 transitions. [2022-07-12 10:08:33,632 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7409972299168975 [2022-07-12 10:08:33,633 INFO L72 ComplementDD]: Start complementDD. Operand 19 states and 1605 transitions. [2022-07-12 10:08:33,633 INFO L73 IsDeterministic]: Start isDeterministic. Operand 19 states and 1605 transitions. [2022-07-12 10:08:33,633 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:08:33,633 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 19 states and 1605 transitions. [2022-07-12 10:08:33,635 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 20 states, 19 states have (on average 84.47368421052632) internal successors, (1605), 19 states have internal predecessors, (1605), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:08:33,638 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 20 states, 20 states have (on average 114.0) internal successors, (2280), 20 states have internal predecessors, (2280), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:08:33,638 INFO L81 ComplementDD]: Finished complementDD. Result has 20 states, 20 states have (on average 114.0) internal successors, (2280), 20 states have internal predecessors, (2280), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:08:33,638 INFO L186 Difference]: Start difference. First operand has 123 places, 99 transitions, 254 flow. Second operand 19 states and 1605 transitions. [2022-07-12 10:08:33,638 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 135 places, 190 transitions, 853 flow [2022-07-12 10:08:33,642 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 127 places, 190 transitions, 795 flow, removed 24 selfloop flow, removed 8 redundant places. [2022-07-12 10:08:33,644 INFO L242 Difference]: Finished difference. Result has 138 places, 117 transitions, 431 flow [2022-07-12 10:08:33,644 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=114, PETRI_DIFFERENCE_MINUEND_FLOW=234, PETRI_DIFFERENCE_MINUEND_PLACES=109, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=99, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=84, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=431, PETRI_PLACES=138, PETRI_TRANSITIONS=117} [2022-07-12 10:08:33,645 INFO L279 CegarLoopForPetriNet]: 117 programPoint places, 21 predicate places. [2022-07-12 10:08:33,645 INFO L495 AbstractCegarLoop]: Abstraction has has 138 places, 117 transitions, 431 flow [2022-07-12 10:08:33,646 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 79.47058823529412) internal successors, (1351), 17 states have internal predecessors, (1351), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:08:33,646 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:08:33,646 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] [2022-07-12 10:08:33,646 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-07-12 10:08:33,646 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, P1Err1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-07-12 10:08:33,646 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:08:33,646 INFO L85 PathProgramCache]: Analyzing trace with hash 1152284406, now seen corresponding path program 2 times [2022-07-12 10:08:33,646 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:08:33,646 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [973215750] [2022-07-12 10:08:33,646 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:08:33,647 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:08:33,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:08:33,961 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:08:33,962 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:08:33,962 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [973215750] [2022-07-12 10:08:33,962 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [973215750] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:08:33,962 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:08:33,962 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-07-12 10:08:33,962 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1023595569] [2022-07-12 10:08:33,963 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:08:33,963 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-07-12 10:08:33,963 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:08:33,963 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-07-12 10:08:33,964 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=141, Unknown=0, NotChecked=0, Total=182 [2022-07-12 10:08:33,965 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 83 out of 114 [2022-07-12 10:08:33,966 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 138 places, 117 transitions, 431 flow. Second operand has 14 states, 14 states have (on average 84.57142857142857) internal successors, (1184), 14 states have internal predecessors, (1184), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:08:33,966 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:08:33,966 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 83 of 114 [2022-07-12 10:08:33,967 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:08:34,598 INFO L129 PetriNetUnfolder]: 223/617 cut-off events. [2022-07-12 10:08:34,598 INFO L130 PetriNetUnfolder]: For 1660/2957 co-relation queries the response was YES. [2022-07-12 10:08:34,600 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2088 conditions, 617 events. 223/617 cut-off events. For 1660/2957 co-relation queries the response was YES. Maximal size of possible extension queue 46. Compared 2809 event pairs, 55 based on Foata normal form. 28/596 useless extension candidates. Maximal degree in co-relation 1994. Up to 279 conditions per place. [2022-07-12 10:08:34,602 INFO L132 encePairwiseOnDemand]: 101/114 looper letters, 51 selfloop transitions, 21 changer transitions 15/163 dead transitions. [2022-07-12 10:08:34,602 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 146 places, 163 transitions, 928 flow [2022-07-12 10:08:34,603 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-07-12 10:08:34,603 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2022-07-12 10:08:34,605 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 1310 transitions. [2022-07-12 10:08:34,605 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7660818713450293 [2022-07-12 10:08:34,605 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 1310 transitions. [2022-07-12 10:08:34,605 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 1310 transitions. [2022-07-12 10:08:34,606 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:08:34,606 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 1310 transitions. [2022-07-12 10:08:34,608 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 87.33333333333333) internal successors, (1310), 15 states have internal predecessors, (1310), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:08:34,610 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 114.0) internal successors, (1824), 16 states have internal predecessors, (1824), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:08:34,610 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 114.0) internal successors, (1824), 16 states have internal predecessors, (1824), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:08:34,610 INFO L186 Difference]: Start difference. First operand has 138 places, 117 transitions, 431 flow. Second operand 15 states and 1310 transitions. [2022-07-12 10:08:34,610 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 146 places, 163 transitions, 928 flow [2022-07-12 10:08:34,615 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 139 places, 163 transitions, 866 flow, removed 27 selfloop flow, removed 7 redundant places. [2022-07-12 10:08:34,617 INFO L242 Difference]: Finished difference. Result has 148 places, 130 transitions, 592 flow [2022-07-12 10:08:34,617 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=114, PETRI_DIFFERENCE_MINUEND_FLOW=393, PETRI_DIFFERENCE_MINUEND_PLACES=125, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=117, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=100, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=592, PETRI_PLACES=148, PETRI_TRANSITIONS=130} [2022-07-12 10:08:34,617 INFO L279 CegarLoopForPetriNet]: 117 programPoint places, 31 predicate places. [2022-07-12 10:08:34,617 INFO L495 AbstractCegarLoop]: Abstraction has has 148 places, 130 transitions, 592 flow [2022-07-12 10:08:34,618 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 84.57142857142857) internal successors, (1184), 14 states have internal predecessors, (1184), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:08:34,618 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:08:34,618 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] [2022-07-12 10:08:34,618 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-07-12 10:08:34,618 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, P1Err1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-07-12 10:08:34,619 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:08:34,619 INFO L85 PathProgramCache]: Analyzing trace with hash 813395958, now seen corresponding path program 3 times [2022-07-12 10:08:34,619 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:08:34,619 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [738924404] [2022-07-12 10:08:34,619 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:08:34,619 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:08:34,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:08:34,896 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:08:34,896 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:08:34,896 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [738924404] [2022-07-12 10:08:34,896 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [738924404] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:08:34,896 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:08:34,897 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-07-12 10:08:34,897 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1001880015] [2022-07-12 10:08:34,897 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:08:34,897 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-07-12 10:08:34,897 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:08:34,897 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-07-12 10:08:34,897 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=140, Unknown=0, NotChecked=0, Total=182 [2022-07-12 10:08:34,898 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 83 out of 114 [2022-07-12 10:08:34,899 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 148 places, 130 transitions, 592 flow. Second operand has 14 states, 14 states have (on average 84.57142857142857) internal successors, (1184), 14 states have internal predecessors, (1184), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:08:34,899 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:08:34,899 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 83 of 114 [2022-07-12 10:08:34,899 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:08:35,488 INFO L129 PetriNetUnfolder]: 262/718 cut-off events. [2022-07-12 10:08:35,488 INFO L130 PetriNetUnfolder]: For 3742/5639 co-relation queries the response was YES. [2022-07-12 10:08:35,490 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2814 conditions, 718 events. 262/718 cut-off events. For 3742/5639 co-relation queries the response was YES. Maximal size of possible extension queue 60. Compared 3532 event pairs, 66 based on Foata normal form. 28/686 useless extension candidates. Maximal degree in co-relation 2713. Up to 263 conditions per place. [2022-07-12 10:08:35,493 INFO L132 encePairwiseOnDemand]: 102/114 looper letters, 55 selfloop transitions, 24 changer transitions 18/173 dead transitions. [2022-07-12 10:08:35,493 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 158 places, 173 transitions, 1164 flow [2022-07-12 10:08:35,494 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-12 10:08:35,495 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2022-07-12 10:08:35,496 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 1226 transitions. [2022-07-12 10:08:35,497 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.768170426065163 [2022-07-12 10:08:35,497 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 1226 transitions. [2022-07-12 10:08:35,497 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 1226 transitions. [2022-07-12 10:08:35,497 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:08:35,497 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 1226 transitions. [2022-07-12 10:08:35,500 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 87.57142857142857) internal successors, (1226), 14 states have internal predecessors, (1226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:08:35,503 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 114.0) internal successors, (1710), 15 states have internal predecessors, (1710), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:08:35,504 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 114.0) internal successors, (1710), 15 states have internal predecessors, (1710), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:08:35,504 INFO L186 Difference]: Start difference. First operand has 148 places, 130 transitions, 592 flow. Second operand 14 states and 1226 transitions. [2022-07-12 10:08:35,504 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 158 places, 173 transitions, 1164 flow [2022-07-12 10:08:35,510 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 151 places, 173 transitions, 1101 flow, removed 24 selfloop flow, removed 7 redundant places. [2022-07-12 10:08:35,518 INFO L242 Difference]: Finished difference. Result has 158 places, 134 transitions, 690 flow [2022-07-12 10:08:35,518 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=114, PETRI_DIFFERENCE_MINUEND_FLOW=537, PETRI_DIFFERENCE_MINUEND_PLACES=138, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=130, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=106, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=690, PETRI_PLACES=158, PETRI_TRANSITIONS=134} [2022-07-12 10:08:35,519 INFO L279 CegarLoopForPetriNet]: 117 programPoint places, 41 predicate places. [2022-07-12 10:08:35,519 INFO L495 AbstractCegarLoop]: Abstraction has has 158 places, 134 transitions, 690 flow [2022-07-12 10:08:35,520 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 84.57142857142857) internal successors, (1184), 14 states have internal predecessors, (1184), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:08:35,520 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:08:35,520 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] [2022-07-12 10:08:35,520 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-07-12 10:08:35,520 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, P1Err1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-07-12 10:08:35,520 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:08:35,520 INFO L85 PathProgramCache]: Analyzing trace with hash 1874237520, now seen corresponding path program 4 times [2022-07-12 10:08:35,520 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:08:35,520 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [33931595] [2022-07-12 10:08:35,520 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:08:35,521 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:08:35,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:08:35,902 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:08:35,902 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:08:35,902 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [33931595] [2022-07-12 10:08:35,902 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [33931595] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:08:35,902 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:08:35,902 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2022-07-12 10:08:35,902 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1927405266] [2022-07-12 10:08:35,902 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:08:35,903 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-07-12 10:08:35,903 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:08:35,903 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-07-12 10:08:35,903 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=224, Unknown=0, NotChecked=0, Total=272 [2022-07-12 10:08:35,904 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 78 out of 114 [2022-07-12 10:08:35,905 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 158 places, 134 transitions, 690 flow. Second operand has 17 states, 17 states have (on average 79.47058823529412) internal successors, (1351), 17 states have internal predecessors, (1351), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:08:35,905 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:08:35,905 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 78 of 114 [2022-07-12 10:08:35,905 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:08:36,946 INFO L129 PetriNetUnfolder]: 516/1154 cut-off events. [2022-07-12 10:08:36,946 INFO L130 PetriNetUnfolder]: For 7135/7703 co-relation queries the response was YES. [2022-07-12 10:08:36,950 INFO L84 FinitePrefix]: Finished finitePrefix Result has 4692 conditions, 1154 events. 516/1154 cut-off events. For 7135/7703 co-relation queries the response was YES. Maximal size of possible extension queue 80. Compared 6455 event pairs, 95 based on Foata normal form. 29/1160 useless extension candidates. Maximal degree in co-relation 4584. Up to 294 conditions per place. [2022-07-12 10:08:36,955 INFO L132 encePairwiseOnDemand]: 99/114 looper letters, 71 selfloop transitions, 31 changer transitions 56/225 dead transitions. [2022-07-12 10:08:36,955 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 178 places, 225 transitions, 1773 flow [2022-07-12 10:08:36,955 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-07-12 10:08:36,956 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2022-07-12 10:08:36,958 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 2002 transitions. [2022-07-12 10:08:36,959 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7317251461988304 [2022-07-12 10:08:36,959 INFO L72 ComplementDD]: Start complementDD. Operand 24 states and 2002 transitions. [2022-07-12 10:08:36,959 INFO L73 IsDeterministic]: Start isDeterministic. Operand 24 states and 2002 transitions. [2022-07-12 10:08:36,960 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:08:36,960 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 24 states and 2002 transitions. [2022-07-12 10:08:36,963 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 25 states, 24 states have (on average 83.41666666666667) internal successors, (2002), 24 states have internal predecessors, (2002), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:08:37,000 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 25 states, 25 states have (on average 114.0) internal successors, (2850), 25 states have internal predecessors, (2850), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:08:37,001 INFO L81 ComplementDD]: Finished complementDD. Result has 25 states, 25 states have (on average 114.0) internal successors, (2850), 25 states have internal predecessors, (2850), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:08:37,001 INFO L186 Difference]: Start difference. First operand has 158 places, 134 transitions, 690 flow. Second operand 24 states and 2002 transitions. [2022-07-12 10:08:37,001 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 178 places, 225 transitions, 1773 flow [2022-07-12 10:08:37,013 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 161 places, 225 transitions, 1490 flow, removed 116 selfloop flow, removed 17 redundant places. [2022-07-12 10:08:37,015 INFO L242 Difference]: Finished difference. Result has 175 places, 134 transitions, 716 flow [2022-07-12 10:08:37,016 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=114, PETRI_DIFFERENCE_MINUEND_FLOW=580, PETRI_DIFFERENCE_MINUEND_PLACES=138, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=134, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=104, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=716, PETRI_PLACES=175, PETRI_TRANSITIONS=134} [2022-07-12 10:08:37,017 INFO L279 CegarLoopForPetriNet]: 117 programPoint places, 58 predicate places. [2022-07-12 10:08:37,017 INFO L495 AbstractCegarLoop]: Abstraction has has 175 places, 134 transitions, 716 flow [2022-07-12 10:08:37,018 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 79.47058823529412) internal successors, (1351), 17 states have internal predecessors, (1351), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:08:37,018 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:08:37,018 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] [2022-07-12 10:08:37,018 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-07-12 10:08:37,018 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, P1Err1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-07-12 10:08:37,019 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:08:37,019 INFO L85 PathProgramCache]: Analyzing trace with hash -2006059476, now seen corresponding path program 5 times [2022-07-12 10:08:37,019 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:08:37,019 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1858010281] [2022-07-12 10:08:37,019 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:08:37,020 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:08:37,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:08:37,239 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:08:37,239 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:08:37,239 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1858010281] [2022-07-12 10:08:37,239 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1858010281] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:08:37,239 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:08:37,239 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-12 10:08:37,239 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [252648849] [2022-07-12 10:08:37,239 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:08:37,239 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-12 10:08:37,240 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:08:37,240 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-12 10:08:37,240 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2022-07-12 10:08:37,240 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 83 out of 114 [2022-07-12 10:08:37,241 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 175 places, 134 transitions, 716 flow. Second operand has 10 states, 10 states have (on average 85.2) internal successors, (852), 10 states have internal predecessors, (852), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:08:37,241 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:08:37,241 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 83 of 114 [2022-07-12 10:08:37,241 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:08:37,864 INFO L129 PetriNetUnfolder]: 274/747 cut-off events. [2022-07-12 10:08:37,865 INFO L130 PetriNetUnfolder]: For 4856/8175 co-relation queries the response was YES. [2022-07-12 10:08:37,867 INFO L84 FinitePrefix]: Finished finitePrefix Result has 3139 conditions, 747 events. 274/747 cut-off events. For 4856/8175 co-relation queries the response was YES. Maximal size of possible extension queue 67. Compared 3814 event pairs, 57 based on Foata normal form. 31/719 useless extension candidates. Maximal degree in co-relation 3026. Up to 333 conditions per place. [2022-07-12 10:08:37,870 INFO L132 encePairwiseOnDemand]: 100/114 looper letters, 48 selfloop transitions, 22 changer transitions 28/175 dead transitions. [2022-07-12 10:08:37,870 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 171 places, 175 transitions, 1370 flow [2022-07-12 10:08:37,871 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-07-12 10:08:37,871 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2022-07-12 10:08:37,874 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1143 transitions. [2022-07-12 10:08:37,874 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.771255060728745 [2022-07-12 10:08:37,875 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 1143 transitions. [2022-07-12 10:08:37,875 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 1143 transitions. [2022-07-12 10:08:37,875 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:08:37,875 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 1143 transitions. [2022-07-12 10:08:37,877 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 87.92307692307692) internal successors, (1143), 13 states have internal predecessors, (1143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:08:37,879 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 114.0) internal successors, (1596), 14 states have internal predecessors, (1596), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:08:37,880 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 114.0) internal successors, (1596), 14 states have internal predecessors, (1596), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:08:37,880 INFO L186 Difference]: Start difference. First operand has 175 places, 134 transitions, 716 flow. Second operand 13 states and 1143 transitions. [2022-07-12 10:08:37,880 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 171 places, 175 transitions, 1370 flow [2022-07-12 10:08:37,889 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 151 places, 175 transitions, 1191 flow, removed 76 selfloop flow, removed 20 redundant places. [2022-07-12 10:08:37,891 INFO L242 Difference]: Finished difference. Result has 159 places, 141 transitions, 818 flow [2022-07-12 10:08:37,892 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=114, PETRI_DIFFERENCE_MINUEND_FLOW=637, PETRI_DIFFERENCE_MINUEND_PLACES=139, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=134, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=112, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=818, PETRI_PLACES=159, PETRI_TRANSITIONS=141} [2022-07-12 10:08:37,892 INFO L279 CegarLoopForPetriNet]: 117 programPoint places, 42 predicate places. [2022-07-12 10:08:37,892 INFO L495 AbstractCegarLoop]: Abstraction has has 159 places, 141 transitions, 818 flow [2022-07-12 10:08:37,893 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 85.2) internal successors, (852), 10 states have internal predecessors, (852), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:08:37,893 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:08:37,893 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] [2022-07-12 10:08:37,893 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-07-12 10:08:37,893 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, P1Err1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-07-12 10:08:37,893 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:08:37,894 INFO L85 PathProgramCache]: Analyzing trace with hash -177062592, now seen corresponding path program 1 times [2022-07-12 10:08:37,894 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:08:37,894 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [785900250] [2022-07-12 10:08:37,894 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:08:37,894 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:08:37,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:08:38,025 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:08:38,025 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:08:38,026 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [785900250] [2022-07-12 10:08:38,026 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [785900250] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:08:38,026 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:08:38,026 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-12 10:08:38,026 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1021835286] [2022-07-12 10:08:38,026 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:08:38,027 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-12 10:08:38,027 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:08:38,027 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-12 10:08:38,027 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-12 10:08:38,028 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 87 out of 114 [2022-07-12 10:08:38,028 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 159 places, 141 transitions, 818 flow. Second operand has 7 states, 7 states have (on average 89.71428571428571) internal successors, (628), 7 states have internal predecessors, (628), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:08:38,028 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:08:38,029 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 87 of 114 [2022-07-12 10:08:38,029 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:08:38,321 INFO L129 PetriNetUnfolder]: 266/764 cut-off events. [2022-07-12 10:08:38,321 INFO L130 PetriNetUnfolder]: For 4681/8134 co-relation queries the response was YES. [2022-07-12 10:08:38,325 INFO L84 FinitePrefix]: Finished finitePrefix Result has 3479 conditions, 764 events. 266/764 cut-off events. For 4681/8134 co-relation queries the response was YES. Maximal size of possible extension queue 75. Compared 4201 event pairs, 57 based on Foata normal form. 36/740 useless extension candidates. Maximal degree in co-relation 3375. Up to 342 conditions per place. [2022-07-12 10:08:38,350 INFO L132 encePairwiseOnDemand]: 104/114 looper letters, 44 selfloop transitions, 12 changer transitions 26/165 dead transitions. [2022-07-12 10:08:38,351 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 159 places, 165 transitions, 1228 flow [2022-07-12 10:08:38,352 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-12 10:08:38,352 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-07-12 10:08:38,352 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 653 transitions. [2022-07-12 10:08:38,352 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.818295739348371 [2022-07-12 10:08:38,352 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 653 transitions. [2022-07-12 10:08:38,352 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 653 transitions. [2022-07-12 10:08:38,353 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:08:38,353 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 653 transitions. [2022-07-12 10:08:38,354 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 93.28571428571429) internal successors, (653), 7 states have internal predecessors, (653), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:08:38,355 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 114.0) internal successors, (912), 8 states have internal predecessors, (912), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:08:38,355 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 114.0) internal successors, (912), 8 states have internal predecessors, (912), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:08:38,355 INFO L186 Difference]: Start difference. First operand has 159 places, 141 transitions, 818 flow. Second operand 7 states and 653 transitions. [2022-07-12 10:08:38,355 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 159 places, 165 transitions, 1228 flow [2022-07-12 10:08:38,364 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 151 places, 165 transitions, 1177 flow, removed 18 selfloop flow, removed 8 redundant places. [2022-07-12 10:08:38,366 INFO L242 Difference]: Finished difference. Result has 156 places, 137 transitions, 784 flow [2022-07-12 10:08:38,366 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=114, PETRI_DIFFERENCE_MINUEND_FLOW=781, PETRI_DIFFERENCE_MINUEND_PLACES=145, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=141, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=129, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=784, PETRI_PLACES=156, PETRI_TRANSITIONS=137} [2022-07-12 10:08:38,366 INFO L279 CegarLoopForPetriNet]: 117 programPoint places, 39 predicate places. [2022-07-12 10:08:38,366 INFO L495 AbstractCegarLoop]: Abstraction has has 156 places, 137 transitions, 784 flow [2022-07-12 10:08:38,367 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 89.71428571428571) internal successors, (628), 7 states have internal predecessors, (628), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:08:38,367 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:08:38,367 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] [2022-07-12 10:08:38,367 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-07-12 10:08:38,367 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, P1Err1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-07-12 10:08:38,367 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:08:38,367 INFO L85 PathProgramCache]: Analyzing trace with hash -1211062210, now seen corresponding path program 2 times [2022-07-12 10:08:38,367 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:08:38,367 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1577752484] [2022-07-12 10:08:38,367 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:08:38,368 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:08:38,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:08:38,509 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:08:38,510 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:08:38,510 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1577752484] [2022-07-12 10:08:38,510 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1577752484] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:08:38,510 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:08:38,510 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-12 10:08:38,510 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1476810822] [2022-07-12 10:08:38,510 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:08:38,510 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-12 10:08:38,510 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:08:38,510 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-12 10:08:38,511 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2022-07-12 10:08:38,511 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 86 out of 114 [2022-07-12 10:08:38,512 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 156 places, 137 transitions, 784 flow. Second operand has 9 states, 9 states have (on average 88.22222222222223) internal successors, (794), 9 states have internal predecessors, (794), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:08:38,512 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:08:38,512 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 86 of 114 [2022-07-12 10:08:38,512 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:08:38,843 INFO L129 PetriNetUnfolder]: 225/692 cut-off events. [2022-07-12 10:08:38,843 INFO L130 PetriNetUnfolder]: For 5161/10185 co-relation queries the response was YES. [2022-07-12 10:08:38,847 INFO L84 FinitePrefix]: Finished finitePrefix Result has 3236 conditions, 692 events. 225/692 cut-off events. For 5161/10185 co-relation queries the response was YES. Maximal size of possible extension queue 63. Compared 3670 event pairs, 65 based on Foata normal form. 34/673 useless extension candidates. Maximal degree in co-relation 3133. Up to 306 conditions per place. [2022-07-12 10:08:38,851 INFO L132 encePairwiseOnDemand]: 104/114 looper letters, 44 selfloop transitions, 13 changer transitions 27/163 dead transitions. [2022-07-12 10:08:38,851 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 159 places, 163 transitions, 1217 flow [2022-07-12 10:08:38,852 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-07-12 10:08:38,852 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-07-12 10:08:38,852 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 732 transitions. [2022-07-12 10:08:38,853 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8026315789473685 [2022-07-12 10:08:38,853 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 732 transitions. [2022-07-12 10:08:38,853 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 732 transitions. [2022-07-12 10:08:38,853 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:08:38,854 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 732 transitions. [2022-07-12 10:08:38,855 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 91.5) internal successors, (732), 8 states have internal predecessors, (732), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:08:38,856 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 114.0) internal successors, (1026), 9 states have internal predecessors, (1026), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:08:38,856 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 114.0) internal successors, (1026), 9 states have internal predecessors, (1026), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:08:38,857 INFO L186 Difference]: Start difference. First operand has 156 places, 137 transitions, 784 flow. Second operand 8 states and 732 transitions. [2022-07-12 10:08:38,857 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 159 places, 163 transitions, 1217 flow [2022-07-12 10:08:38,869 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 154 places, 163 transitions, 1173 flow, removed 16 selfloop flow, removed 5 redundant places. [2022-07-12 10:08:38,872 INFO L242 Difference]: Finished difference. Result has 159 places, 134 transitions, 787 flow [2022-07-12 10:08:38,872 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=114, PETRI_DIFFERENCE_MINUEND_FLOW=748, PETRI_DIFFERENCE_MINUEND_PLACES=147, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=137, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=124, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=787, PETRI_PLACES=159, PETRI_TRANSITIONS=134} [2022-07-12 10:08:38,872 INFO L279 CegarLoopForPetriNet]: 117 programPoint places, 42 predicate places. [2022-07-12 10:08:38,872 INFO L495 AbstractCegarLoop]: Abstraction has has 159 places, 134 transitions, 787 flow [2022-07-12 10:08:38,873 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 88.22222222222223) internal successors, (794), 9 states have internal predecessors, (794), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:08:38,873 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:08:38,873 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] [2022-07-12 10:08:38,873 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-07-12 10:08:38,873 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, P1Err1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-07-12 10:08:38,874 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:08:38,874 INFO L85 PathProgramCache]: Analyzing trace with hash -1329660998, now seen corresponding path program 3 times [2022-07-12 10:08:38,874 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:08:38,874 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1429995272] [2022-07-12 10:08:38,874 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:08:38,874 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:08:38,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:08:39,154 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:08:39,154 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:08:39,154 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1429995272] [2022-07-12 10:08:39,155 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1429995272] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:08:39,155 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:08:39,156 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-07-12 10:08:39,156 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [406991155] [2022-07-12 10:08:39,158 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:08:39,158 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-07-12 10:08:39,158 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:08:39,159 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-07-12 10:08:39,159 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2022-07-12 10:08:39,160 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 81 out of 114 [2022-07-12 10:08:39,161 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 159 places, 134 transitions, 787 flow. Second operand has 13 states, 13 states have (on average 82.76923076923077) internal successors, (1076), 13 states have internal predecessors, (1076), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:08:39,161 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:08:39,161 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 81 of 114 [2022-07-12 10:08:39,161 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:08:39,909 INFO L129 PetriNetUnfolder]: 447/1143 cut-off events. [2022-07-12 10:08:39,909 INFO L130 PetriNetUnfolder]: For 7083/7618 co-relation queries the response was YES. [2022-07-12 10:08:39,914 INFO L84 FinitePrefix]: Finished finitePrefix Result has 5102 conditions, 1143 events. 447/1143 cut-off events. For 7083/7618 co-relation queries the response was YES. Maximal size of possible extension queue 73. Compared 6653 event pairs, 125 based on Foata normal form. 53/1145 useless extension candidates. Maximal degree in co-relation 4995. Up to 277 conditions per place. [2022-07-12 10:08:39,918 INFO L132 encePairwiseOnDemand]: 102/114 looper letters, 61 selfloop transitions, 18 changer transitions 67/217 dead transitions. [2022-07-12 10:08:39,918 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 167 places, 217 transitions, 1940 flow [2022-07-12 10:08:39,918 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-07-12 10:08:39,918 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2022-07-12 10:08:39,920 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 1322 transitions. [2022-07-12 10:08:39,920 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7730994152046784 [2022-07-12 10:08:39,921 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 1322 transitions. [2022-07-12 10:08:39,921 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 1322 transitions. [2022-07-12 10:08:39,921 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:08:39,921 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 1322 transitions. [2022-07-12 10:08:39,928 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 88.13333333333334) internal successors, (1322), 15 states have internal predecessors, (1322), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:08:39,937 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 114.0) internal successors, (1824), 16 states have internal predecessors, (1824), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:08:39,938 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 114.0) internal successors, (1824), 16 states have internal predecessors, (1824), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:08:39,938 INFO L186 Difference]: Start difference. First operand has 159 places, 134 transitions, 787 flow. Second operand 15 states and 1322 transitions. [2022-07-12 10:08:39,939 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 167 places, 217 transitions, 1940 flow [2022-07-12 10:08:39,954 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 159 places, 217 transitions, 1847 flow, removed 38 selfloop flow, removed 8 redundant places. [2022-07-12 10:08:39,957 INFO L242 Difference]: Finished difference. Result has 169 places, 131 transitions, 808 flow [2022-07-12 10:08:39,957 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=114, PETRI_DIFFERENCE_MINUEND_FLOW=740, PETRI_DIFFERENCE_MINUEND_PLACES=145, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=134, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=120, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=808, PETRI_PLACES=169, PETRI_TRANSITIONS=131} [2022-07-12 10:08:39,958 INFO L279 CegarLoopForPetriNet]: 117 programPoint places, 52 predicate places. [2022-07-12 10:08:39,958 INFO L495 AbstractCegarLoop]: Abstraction has has 169 places, 131 transitions, 808 flow [2022-07-12 10:08:39,959 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 82.76923076923077) internal successors, (1076), 13 states have internal predecessors, (1076), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:08:39,959 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:08:39,959 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] [2022-07-12 10:08:39,959 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-07-12 10:08:39,959 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, P1Err1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-07-12 10:08:39,960 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:08:39,960 INFO L85 PathProgramCache]: Analyzing trace with hash 388887840, now seen corresponding path program 4 times [2022-07-12 10:08:39,960 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:08:39,960 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [869620603] [2022-07-12 10:08:39,960 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:08:39,960 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:08:40,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:08:40,331 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:08:40,331 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:08:40,332 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [869620603] [2022-07-12 10:08:40,332 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [869620603] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:08:40,332 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:08:40,332 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2022-07-12 10:08:40,332 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [756283166] [2022-07-12 10:08:40,332 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:08:40,332 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-07-12 10:08:40,332 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:08:40,332 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-07-12 10:08:40,332 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=161, Unknown=0, NotChecked=0, Total=210 [2022-07-12 10:08:40,333 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 82 out of 114 [2022-07-12 10:08:40,334 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 169 places, 131 transitions, 808 flow. Second operand has 15 states, 15 states have (on average 83.6) internal successors, (1254), 15 states have internal predecessors, (1254), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:08:40,334 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:08:40,334 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 82 of 114 [2022-07-12 10:08:40,334 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:08:40,891 INFO L129 PetriNetUnfolder]: 195/611 cut-off events. [2022-07-12 10:08:40,891 INFO L130 PetriNetUnfolder]: For 5404/11317 co-relation queries the response was YES. [2022-07-12 10:08:40,893 INFO L84 FinitePrefix]: Finished finitePrefix Result has 3045 conditions, 611 events. 195/611 cut-off events. For 5404/11317 co-relation queries the response was YES. Maximal size of possible extension queue 56. Compared 3079 event pairs, 86 based on Foata normal form. 40/603 useless extension candidates. Maximal degree in co-relation 2931. Up to 190 conditions per place. [2022-07-12 10:08:40,896 INFO L132 encePairwiseOnDemand]: 99/114 looper letters, 57 selfloop transitions, 29 changer transitions 1/163 dead transitions. [2022-07-12 10:08:40,896 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 176 places, 163 transitions, 1359 flow [2022-07-12 10:08:40,896 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-07-12 10:08:40,896 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2022-07-12 10:08:40,897 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 1378 transitions. [2022-07-12 10:08:40,898 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7554824561403509 [2022-07-12 10:08:40,898 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 1378 transitions. [2022-07-12 10:08:40,898 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 1378 transitions. [2022-07-12 10:08:40,898 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:08:40,898 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 1378 transitions. [2022-07-12 10:08:40,900 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 86.125) internal successors, (1378), 16 states have internal predecessors, (1378), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:08:40,902 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 114.0) internal successors, (1938), 17 states have internal predecessors, (1938), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:08:40,902 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 114.0) internal successors, (1938), 17 states have internal predecessors, (1938), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:08:40,902 INFO L186 Difference]: Start difference. First operand has 169 places, 131 transitions, 808 flow. Second operand 16 states and 1378 transitions. [2022-07-12 10:08:40,902 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 176 places, 163 transitions, 1359 flow [2022-07-12 10:08:40,912 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 160 places, 163 transitions, 1211 flow, removed 47 selfloop flow, removed 16 redundant places. [2022-07-12 10:08:40,914 INFO L242 Difference]: Finished difference. Result has 165 places, 146 transitions, 997 flow [2022-07-12 10:08:40,914 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=114, PETRI_DIFFERENCE_MINUEND_FLOW=704, PETRI_DIFFERENCE_MINUEND_PLACES=145, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=131, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=111, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=997, PETRI_PLACES=165, PETRI_TRANSITIONS=146} [2022-07-12 10:08:40,915 INFO L279 CegarLoopForPetriNet]: 117 programPoint places, 48 predicate places. [2022-07-12 10:08:40,915 INFO L495 AbstractCegarLoop]: Abstraction has has 165 places, 146 transitions, 997 flow [2022-07-12 10:08:40,915 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 83.6) internal successors, (1254), 15 states have internal predecessors, (1254), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:08:40,915 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:08:40,915 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] [2022-07-12 10:08:40,915 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-07-12 10:08:40,916 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, P1Err1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-07-12 10:08:40,916 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:08:40,916 INFO L85 PathProgramCache]: Analyzing trace with hash 105420936, now seen corresponding path program 1 times [2022-07-12 10:08:40,916 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:08:40,916 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1501734415] [2022-07-12 10:08:40,916 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:08:40,916 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:08:40,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:08:41,484 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:08:41,484 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:08:41,484 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1501734415] [2022-07-12 10:08:41,484 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1501734415] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:08:41,484 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:08:41,484 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2022-07-12 10:08:41,485 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1263304296] [2022-07-12 10:08:41,485 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:08:41,485 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-07-12 10:08:41,485 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:08:41,485 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-07-12 10:08:41,485 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=199, Unknown=0, NotChecked=0, Total=240 [2022-07-12 10:08:41,486 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 76 out of 114 [2022-07-12 10:08:41,486 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 165 places, 146 transitions, 997 flow. Second operand has 16 states, 16 states have (on average 77.75) internal successors, (1244), 16 states have internal predecessors, (1244), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:08:41,486 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:08:41,487 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 76 of 114 [2022-07-12 10:08:41,487 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:08:43,059 INFO L129 PetriNetUnfolder]: 410/1127 cut-off events. [2022-07-12 10:08:43,059 INFO L130 PetriNetUnfolder]: For 7707/8174 co-relation queries the response was YES. [2022-07-12 10:08:43,063 INFO L84 FinitePrefix]: Finished finitePrefix Result has 4950 conditions, 1127 events. 410/1127 cut-off events. For 7707/8174 co-relation queries the response was YES. Maximal size of possible extension queue 51. Compared 6706 event pairs, 64 based on Foata normal form. 62/1152 useless extension candidates. Maximal degree in co-relation 4837. Up to 232 conditions per place. [2022-07-12 10:08:43,066 INFO L132 encePairwiseOnDemand]: 98/114 looper letters, 73 selfloop transitions, 32 changer transitions 95/265 dead transitions. [2022-07-12 10:08:43,066 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 195 places, 265 transitions, 2620 flow [2022-07-12 10:08:43,067 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2022-07-12 10:08:43,067 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2022-07-12 10:08:43,068 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 2514 transitions. [2022-07-12 10:08:43,069 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7113752122241087 [2022-07-12 10:08:43,069 INFO L72 ComplementDD]: Start complementDD. Operand 31 states and 2514 transitions. [2022-07-12 10:08:43,069 INFO L73 IsDeterministic]: Start isDeterministic. Operand 31 states and 2514 transitions. [2022-07-12 10:08:43,070 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:08:43,070 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 31 states and 2514 transitions. [2022-07-12 10:08:43,072 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 32 states, 31 states have (on average 81.09677419354838) internal successors, (2514), 31 states have internal predecessors, (2514), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:08:43,075 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 32 states, 32 states have (on average 114.0) internal successors, (3648), 32 states have internal predecessors, (3648), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:08:43,076 INFO L81 ComplementDD]: Finished complementDD. Result has 32 states, 32 states have (on average 114.0) internal successors, (3648), 32 states have internal predecessors, (3648), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:08:43,076 INFO L186 Difference]: Start difference. First operand has 165 places, 146 transitions, 997 flow. Second operand 31 states and 2514 transitions. [2022-07-12 10:08:43,076 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 195 places, 265 transitions, 2620 flow [2022-07-12 10:08:43,089 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 190 places, 265 transitions, 2383 flow, removed 110 selfloop flow, removed 5 redundant places. [2022-07-12 10:08:43,092 INFO L242 Difference]: Finished difference. Result has 214 places, 140 transitions, 1015 flow [2022-07-12 10:08:43,092 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=114, PETRI_DIFFERENCE_MINUEND_FLOW=843, PETRI_DIFFERENCE_MINUEND_PLACES=160, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=146, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=119, PETRI_DIFFERENCE_SUBTRAHEND_STATES=31, PETRI_FLOW=1015, PETRI_PLACES=214, PETRI_TRANSITIONS=140} [2022-07-12 10:08:43,093 INFO L279 CegarLoopForPetriNet]: 117 programPoint places, 97 predicate places. [2022-07-12 10:08:43,093 INFO L495 AbstractCegarLoop]: Abstraction has has 214 places, 140 transitions, 1015 flow [2022-07-12 10:08:43,093 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 77.75) internal successors, (1244), 16 states have internal predecessors, (1244), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:08:43,093 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:08:43,093 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] [2022-07-12 10:08:43,093 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-07-12 10:08:43,093 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, P1Err1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-07-12 10:08:43,094 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:08:43,094 INFO L85 PathProgramCache]: Analyzing trace with hash -26874532, now seen corresponding path program 5 times [2022-07-12 10:08:43,094 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:08:43,094 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [602671001] [2022-07-12 10:08:43,094 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:08:43,094 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:08:43,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:08:43,382 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:08:43,382 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:08:43,382 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [602671001] [2022-07-12 10:08:43,382 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [602671001] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:08:43,382 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:08:43,383 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-07-12 10:08:43,383 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [489773445] [2022-07-12 10:08:43,383 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:08:43,383 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-07-12 10:08:43,383 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:08:43,383 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-07-12 10:08:43,383 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=138, Unknown=0, NotChecked=0, Total=182 [2022-07-12 10:08:43,384 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 82 out of 114 [2022-07-12 10:08:43,385 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 214 places, 140 transitions, 1015 flow. Second operand has 14 states, 14 states have (on average 83.71428571428571) internal successors, (1172), 14 states have internal predecessors, (1172), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:08:43,385 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:08:43,385 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 82 of 114 [2022-07-12 10:08:43,385 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:08:43,881 INFO L129 PetriNetUnfolder]: 135/438 cut-off events. [2022-07-12 10:08:43,881 INFO L130 PetriNetUnfolder]: For 5825/9708 co-relation queries the response was YES. [2022-07-12 10:08:43,883 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2383 conditions, 438 events. 135/438 cut-off events. For 5825/9708 co-relation queries the response was YES. Maximal size of possible extension queue 55. Compared 1847 event pairs, 46 based on Foata normal form. 20/411 useless extension candidates. Maximal degree in co-relation 2252. Up to 152 conditions per place. [2022-07-12 10:08:43,885 INFO L132 encePairwiseOnDemand]: 103/114 looper letters, 47 selfloop transitions, 22 changer transitions 17/166 dead transitions. [2022-07-12 10:08:43,885 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 203 places, 166 transitions, 1670 flow [2022-07-12 10:08:43,886 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-12 10:08:43,886 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2022-07-12 10:08:43,887 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 1205 transitions. [2022-07-12 10:08:43,887 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7550125313283208 [2022-07-12 10:08:43,887 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 1205 transitions. [2022-07-12 10:08:43,887 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 1205 transitions. [2022-07-12 10:08:43,887 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:08:43,887 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 1205 transitions. [2022-07-12 10:08:43,889 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 86.07142857142857) internal successors, (1205), 14 states have internal predecessors, (1205), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:08:43,890 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 114.0) internal successors, (1710), 15 states have internal predecessors, (1710), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:08:43,890 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 114.0) internal successors, (1710), 15 states have internal predecessors, (1710), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:08:43,890 INFO L186 Difference]: Start difference. First operand has 214 places, 140 transitions, 1015 flow. Second operand 14 states and 1205 transitions. [2022-07-12 10:08:43,890 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 203 places, 166 transitions, 1670 flow [2022-07-12 10:08:43,902 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 169 places, 166 transitions, 1337 flow, removed 153 selfloop flow, removed 34 redundant places. [2022-07-12 10:08:43,904 INFO L242 Difference]: Finished difference. Result has 176 places, 140 transitions, 920 flow [2022-07-12 10:08:43,904 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=114, PETRI_DIFFERENCE_MINUEND_FLOW=848, PETRI_DIFFERENCE_MINUEND_PLACES=156, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=140, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=118, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=920, PETRI_PLACES=176, PETRI_TRANSITIONS=140} [2022-07-12 10:08:43,904 INFO L279 CegarLoopForPetriNet]: 117 programPoint places, 59 predicate places. [2022-07-12 10:08:43,904 INFO L495 AbstractCegarLoop]: Abstraction has has 176 places, 140 transitions, 920 flow [2022-07-12 10:08:43,905 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 83.71428571428571) internal successors, (1172), 14 states have internal predecessors, (1172), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:08:43,905 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:08:43,905 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] [2022-07-12 10:08:43,905 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-07-12 10:08:43,905 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, P1Err1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-07-12 10:08:43,905 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:08:43,905 INFO L85 PathProgramCache]: Analyzing trace with hash 1387342515, now seen corresponding path program 1 times [2022-07-12 10:08:43,905 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:08:43,905 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1851349869] [2022-07-12 10:08:43,905 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:08:43,905 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:08:43,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:08:44,074 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:08:44,074 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:08:44,074 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1851349869] [2022-07-12 10:08:44,074 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1851349869] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:08:44,074 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:08:44,074 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-12 10:08:44,074 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1099400755] [2022-07-12 10:08:44,075 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:08:44,075 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-12 10:08:44,075 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:08:44,075 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-12 10:08:44,075 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2022-07-12 10:08:44,076 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 82 out of 114 [2022-07-12 10:08:44,076 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 176 places, 140 transitions, 920 flow. Second operand has 10 states, 10 states have (on average 84.5) internal successors, (845), 10 states have internal predecessors, (845), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:08:44,076 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:08:44,076 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 82 of 114 [2022-07-12 10:08:44,076 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:08:44,397 INFO L129 PetriNetUnfolder]: 128/433 cut-off events. [2022-07-12 10:08:44,398 INFO L130 PetriNetUnfolder]: For 3057/6865 co-relation queries the response was YES. [2022-07-12 10:08:44,399 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2007 conditions, 433 events. 128/433 cut-off events. For 3057/6865 co-relation queries the response was YES. Maximal size of possible extension queue 58. Compared 1912 event pairs, 34 based on Foata normal form. 21/404 useless extension candidates. Maximal degree in co-relation 1926. Up to 182 conditions per place. [2022-07-12 10:08:44,400 INFO L132 encePairwiseOnDemand]: 104/114 looper letters, 50 selfloop transitions, 15 changer transitions 12/157 dead transitions. [2022-07-12 10:08:44,400 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 178 places, 157 transitions, 1270 flow [2022-07-12 10:08:44,401 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-12 10:08:44,401 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-07-12 10:08:44,401 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 786 transitions. [2022-07-12 10:08:44,402 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7660818713450293 [2022-07-12 10:08:44,402 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 786 transitions. [2022-07-12 10:08:44,402 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 786 transitions. [2022-07-12 10:08:44,402 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:08:44,402 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 786 transitions. [2022-07-12 10:08:44,403 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 87.33333333333333) internal successors, (786), 9 states have internal predecessors, (786), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:08:44,404 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 114.0) internal successors, (1140), 10 states have internal predecessors, (1140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:08:44,404 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 114.0) internal successors, (1140), 10 states have internal predecessors, (1140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:08:44,404 INFO L186 Difference]: Start difference. First operand has 176 places, 140 transitions, 920 flow. Second operand 9 states and 786 transitions. [2022-07-12 10:08:44,404 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 178 places, 157 transitions, 1270 flow [2022-07-12 10:08:44,411 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 165 places, 157 transitions, 1212 flow, removed 12 selfloop flow, removed 13 redundant places. [2022-07-12 10:08:44,413 INFO L242 Difference]: Finished difference. Result has 170 places, 141 transitions, 930 flow [2022-07-12 10:08:44,413 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=114, PETRI_DIFFERENCE_MINUEND_FLOW=875, PETRI_DIFFERENCE_MINUEND_PLACES=157, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=140, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=125, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=930, PETRI_PLACES=170, PETRI_TRANSITIONS=141} [2022-07-12 10:08:44,413 INFO L279 CegarLoopForPetriNet]: 117 programPoint places, 53 predicate places. [2022-07-12 10:08:44,413 INFO L495 AbstractCegarLoop]: Abstraction has has 170 places, 141 transitions, 930 flow [2022-07-12 10:08:44,414 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 84.5) internal successors, (845), 10 states have internal predecessors, (845), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:08:44,414 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:08:44,414 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] [2022-07-12 10:08:44,414 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-07-12 10:08:44,414 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, P1Err1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-07-12 10:08:44,414 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:08:44,414 INFO L85 PathProgramCache]: Analyzing trace with hash 2064396969, now seen corresponding path program 2 times [2022-07-12 10:08:44,414 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:08:44,414 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [587316619] [2022-07-12 10:08:44,414 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:08:44,415 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:08:44,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:08:44,719 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:08:44,719 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:08:44,719 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [587316619] [2022-07-12 10:08:44,719 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [587316619] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:08:44,719 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:08:44,719 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-07-12 10:08:44,719 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1592387514] [2022-07-12 10:08:44,719 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:08:44,719 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-07-12 10:08:44,719 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:08:44,720 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-07-12 10:08:44,720 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2022-07-12 10:08:44,720 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 81 out of 114 [2022-07-12 10:08:44,721 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 170 places, 141 transitions, 930 flow. Second operand has 13 states, 13 states have (on average 83.0) internal successors, (1079), 13 states have internal predecessors, (1079), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:08:44,721 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:08:44,721 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 81 of 114 [2022-07-12 10:08:44,721 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:08:45,220 INFO L129 PetriNetUnfolder]: 127/429 cut-off events. [2022-07-12 10:08:45,220 INFO L130 PetriNetUnfolder]: For 3125/6825 co-relation queries the response was YES. [2022-07-12 10:08:45,222 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2008 conditions, 429 events. 127/429 cut-off events. For 3125/6825 co-relation queries the response was YES. Maximal size of possible extension queue 58. Compared 1880 event pairs, 47 based on Foata normal form. 24/405 useless extension candidates. Maximal degree in co-relation 1933. Up to 161 conditions per place. [2022-07-12 10:08:45,224 INFO L132 encePairwiseOnDemand]: 98/114 looper letters, 35 selfloop transitions, 31 changer transitions 14/159 dead transitions. [2022-07-12 10:08:45,224 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 178 places, 159 transitions, 1304 flow [2022-07-12 10:08:45,226 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-07-12 10:08:45,226 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2022-07-12 10:08:45,226 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1106 transitions. [2022-07-12 10:08:45,227 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7462887989203779 [2022-07-12 10:08:45,227 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 1106 transitions. [2022-07-12 10:08:45,227 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 1106 transitions. [2022-07-12 10:08:45,227 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:08:45,227 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 1106 transitions. [2022-07-12 10:08:45,228 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 85.07692307692308) internal successors, (1106), 13 states have internal predecessors, (1106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:08:45,229 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 114.0) internal successors, (1596), 14 states have internal predecessors, (1596), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:08:45,230 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 114.0) internal successors, (1596), 14 states have internal predecessors, (1596), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:08:45,230 INFO L186 Difference]: Start difference. First operand has 170 places, 141 transitions, 930 flow. Second operand 13 states and 1106 transitions. [2022-07-12 10:08:45,230 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 178 places, 159 transitions, 1304 flow [2022-07-12 10:08:45,237 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 171 places, 159 transitions, 1262 flow, removed 8 selfloop flow, removed 7 redundant places. [2022-07-12 10:08:45,239 INFO L242 Difference]: Finished difference. Result has 175 places, 139 transitions, 940 flow [2022-07-12 10:08:45,239 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=114, PETRI_DIFFERENCE_MINUEND_FLOW=894, PETRI_DIFFERENCE_MINUEND_PLACES=159, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=141, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=111, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=940, PETRI_PLACES=175, PETRI_TRANSITIONS=139} [2022-07-12 10:08:45,240 INFO L279 CegarLoopForPetriNet]: 117 programPoint places, 58 predicate places. [2022-07-12 10:08:45,240 INFO L495 AbstractCegarLoop]: Abstraction has has 175 places, 139 transitions, 940 flow [2022-07-12 10:08:45,240 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 83.0) internal successors, (1079), 13 states have internal predecessors, (1079), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:08:45,240 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:08:45,240 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] [2022-07-12 10:08:45,240 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-07-12 10:08:45,240 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, P1Err1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-07-12 10:08:45,240 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:08:45,241 INFO L85 PathProgramCache]: Analyzing trace with hash -850323535, now seen corresponding path program 3 times [2022-07-12 10:08:45,241 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:08:45,241 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [991676454] [2022-07-12 10:08:45,241 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:08:45,241 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:08:45,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:08:45,487 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:08:45,487 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:08:45,487 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [991676454] [2022-07-12 10:08:45,487 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [991676454] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:08:45,487 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:08:45,487 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-07-12 10:08:45,487 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [759142522] [2022-07-12 10:08:45,487 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:08:45,487 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-07-12 10:08:45,487 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:08:45,488 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-07-12 10:08:45,488 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=145, Unknown=0, NotChecked=0, Total=182 [2022-07-12 10:08:45,488 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 78 out of 114 [2022-07-12 10:08:45,489 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 175 places, 139 transitions, 940 flow. Second operand has 14 states, 14 states have (on average 79.92857142857143) internal successors, (1119), 14 states have internal predecessors, (1119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:08:45,489 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:08:45,489 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 78 of 114 [2022-07-12 10:08:45,489 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:08:46,015 INFO L129 PetriNetUnfolder]: 267/790 cut-off events. [2022-07-12 10:08:46,015 INFO L130 PetriNetUnfolder]: For 5674/6116 co-relation queries the response was YES. [2022-07-12 10:08:46,020 INFO L84 FinitePrefix]: Finished finitePrefix Result has 3404 conditions, 790 events. 267/790 cut-off events. For 5674/6116 co-relation queries the response was YES. Maximal size of possible extension queue 52. Compared 4381 event pairs, 105 based on Foata normal form. 44/796 useless extension candidates. Maximal degree in co-relation 3290. Up to 266 conditions per place. [2022-07-12 10:08:46,023 INFO L132 encePairwiseOnDemand]: 99/114 looper letters, 71 selfloop transitions, 21 changer transitions 43/202 dead transitions. [2022-07-12 10:08:46,024 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 187 places, 202 transitions, 1876 flow [2022-07-12 10:08:46,024 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-07-12 10:08:46,024 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2022-07-12 10:08:46,025 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 1428 transitions. [2022-07-12 10:08:46,026 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7368421052631579 [2022-07-12 10:08:46,026 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 1428 transitions. [2022-07-12 10:08:46,026 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 1428 transitions. [2022-07-12 10:08:46,027 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:08:46,027 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 1428 transitions. [2022-07-12 10:08:46,029 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 84.0) internal successors, (1428), 17 states have internal predecessors, (1428), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:08:46,031 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 114.0) internal successors, (2052), 18 states have internal predecessors, (2052), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:08:46,031 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 114.0) internal successors, (2052), 18 states have internal predecessors, (2052), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:08:46,032 INFO L186 Difference]: Start difference. First operand has 175 places, 139 transitions, 940 flow. Second operand 17 states and 1428 transitions. [2022-07-12 10:08:46,032 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 187 places, 202 transitions, 1876 flow [2022-07-12 10:08:46,047 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 177 places, 202 transitions, 1791 flow, removed 25 selfloop flow, removed 10 redundant places. [2022-07-12 10:08:46,049 INFO L242 Difference]: Finished difference. Result has 186 places, 137 transitions, 913 flow [2022-07-12 10:08:46,050 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=114, PETRI_DIFFERENCE_MINUEND_FLOW=889, PETRI_DIFFERENCE_MINUEND_PLACES=161, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=139, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=118, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=913, PETRI_PLACES=186, PETRI_TRANSITIONS=137} [2022-07-12 10:08:46,050 INFO L279 CegarLoopForPetriNet]: 117 programPoint places, 69 predicate places. [2022-07-12 10:08:46,050 INFO L495 AbstractCegarLoop]: Abstraction has has 186 places, 137 transitions, 913 flow [2022-07-12 10:08:46,051 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 79.92857142857143) internal successors, (1119), 14 states have internal predecessors, (1119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:08:46,051 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:08:46,051 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] [2022-07-12 10:08:46,051 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-07-12 10:08:46,051 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, P1Err1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-07-12 10:08:46,052 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:08:46,052 INFO L85 PathProgramCache]: Analyzing trace with hash -957608077, now seen corresponding path program 4 times [2022-07-12 10:08:46,052 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:08:46,052 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1150620884] [2022-07-12 10:08:46,052 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:08:46,052 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:08:46,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:08:46,294 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:08:46,294 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:08:46,295 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1150620884] [2022-07-12 10:08:46,295 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1150620884] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:08:46,295 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:08:46,295 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-07-12 10:08:46,295 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1771076651] [2022-07-12 10:08:46,295 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:08:46,296 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-07-12 10:08:46,296 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:08:46,296 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-07-12 10:08:46,296 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2022-07-12 10:08:46,297 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 85 out of 114 [2022-07-12 10:08:46,298 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 186 places, 137 transitions, 913 flow. Second operand has 11 states, 11 states have (on average 87.0) internal successors, (957), 11 states have internal predecessors, (957), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:08:46,298 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:08:46,298 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 85 of 114 [2022-07-12 10:08:46,298 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:08:46,592 INFO L129 PetriNetUnfolder]: 106/352 cut-off events. [2022-07-12 10:08:46,592 INFO L130 PetriNetUnfolder]: For 2648/6023 co-relation queries the response was YES. [2022-07-12 10:08:46,594 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1678 conditions, 352 events. 106/352 cut-off events. For 2648/6023 co-relation queries the response was YES. Maximal size of possible extension queue 55. Compared 1399 event pairs, 62 based on Foata normal form. 14/319 useless extension candidates. Maximal degree in co-relation 1637. Up to 165 conditions per place. [2022-07-12 10:08:46,594 INFO L132 encePairwiseOnDemand]: 106/114 looper letters, 0 selfloop transitions, 0 changer transitions 140/140 dead transitions. [2022-07-12 10:08:46,594 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 183 places, 140 transitions, 1099 flow [2022-07-12 10:08:46,596 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-12 10:08:46,597 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-07-12 10:08:46,597 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 796 transitions. [2022-07-12 10:08:46,598 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7758284600389863 [2022-07-12 10:08:46,598 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 796 transitions. [2022-07-12 10:08:46,598 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 796 transitions. [2022-07-12 10:08:46,598 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:08:46,598 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 796 transitions. [2022-07-12 10:08:46,599 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 88.44444444444444) internal successors, (796), 9 states have internal predecessors, (796), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:08:46,600 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 114.0) internal successors, (1140), 10 states have internal predecessors, (1140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:08:46,600 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 114.0) internal successors, (1140), 10 states have internal predecessors, (1140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:08:46,600 INFO L186 Difference]: Start difference. First operand has 186 places, 137 transitions, 913 flow. Second operand 9 states and 796 transitions. [2022-07-12 10:08:46,600 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 183 places, 140 transitions, 1099 flow [2022-07-12 10:08:46,608 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 169 places, 140 transitions, 1043 flow, removed 16 selfloop flow, removed 14 redundant places. [2022-07-12 10:08:46,609 INFO L242 Difference]: Finished difference. Result has 169 places, 0 transitions, 0 flow [2022-07-12 10:08:46,609 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=114, PETRI_DIFFERENCE_MINUEND_FLOW=853, PETRI_DIFFERENCE_MINUEND_PLACES=161, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=135, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=135, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=0, PETRI_PLACES=169, PETRI_TRANSITIONS=0} [2022-07-12 10:08:46,610 INFO L279 CegarLoopForPetriNet]: 117 programPoint places, 52 predicate places. [2022-07-12 10:08:46,610 INFO L495 AbstractCegarLoop]: Abstraction has has 169 places, 0 transitions, 0 flow [2022-07-12 10:08:46,610 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 87.0) internal successors, (957), 11 states have internal predecessors, (957), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:08:46,612 INFO L805 garLoopResultBuilder]: Registering result SAFE for location P1Err0ASSERT_VIOLATIONERROR_FUNCTION (6 of 7 remaining) [2022-07-12 10:08:46,612 INFO L805 garLoopResultBuilder]: Registering result SAFE for location P1Err1ASSERT_VIOLATIONERROR_FUNCTION (5 of 7 remaining) [2022-07-12 10:08:46,613 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (4 of 7 remaining) [2022-07-12 10:08:46,613 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (3 of 7 remaining) [2022-07-12 10:08:46,613 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 7 remaining) [2022-07-12 10:08:46,613 INFO L805 garLoopResultBuilder]: Registering result SAFE for location P1Err0ASSERT_VIOLATIONERROR_FUNCTION (1 of 7 remaining) [2022-07-12 10:08:46,613 INFO L805 garLoopResultBuilder]: Registering result SAFE for location P1Err1ASSERT_VIOLATIONERROR_FUNCTION (0 of 7 remaining) [2022-07-12 10:08:46,613 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-07-12 10:08:46,613 INFO L356 BasicCegarLoop]: Path program histogram: [5, 5, 4, 1, 1, 1, 1, 1, 1] [2022-07-12 10:08:46,617 INFO L226 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-07-12 10:08:46,617 INFO L176 ceAbstractionStarter]: Computing trace abstraction results [2022-07-12 10:08:46,621 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 12.07 10:08:46 BasicIcfg [2022-07-12 10:08:46,621 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-07-12 10:08:46,621 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-07-12 10:08:46,622 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-07-12 10:08:46,622 INFO L275 PluginConnector]: Witness Printer initialized [2022-07-12 10:08:46,622 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.07 10:08:29" (3/4) ... [2022-07-12 10:08:46,624 INFO L137 WitnessPrinter]: Generating witness for correct program [2022-07-12 10:08:46,627 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P0 [2022-07-12 10:08:46,628 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P1 [2022-07-12 10:08:46,634 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 139 nodes and edges [2022-07-12 10:08:46,635 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 30 nodes and edges [2022-07-12 10:08:46,635 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 7 nodes and edges [2022-07-12 10:08:46,636 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2022-07-12 10:08:46,675 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2022-07-12 10:08:46,675 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-07-12 10:08:46,675 INFO L158 Benchmark]: Toolchain (without parser) took 18958.86ms. Allocated memory was 104.9MB in the beginning and 434.1MB in the end (delta: 329.3MB). Free memory was 76.3MB in the beginning and 346.7MB in the end (delta: -270.4MB). Peak memory consumption was 57.5MB. Max. memory is 16.1GB. [2022-07-12 10:08:46,676 INFO L158 Benchmark]: CDTParser took 0.16ms. Allocated memory is still 104.9MB. Free memory was 60.6MB in the beginning and 60.6MB in the end (delta: 45.9kB). There was no memory consumed. Max. memory is 16.1GB. [2022-07-12 10:08:46,676 INFO L158 Benchmark]: CACSL2BoogieTranslator took 486.37ms. Allocated memory is still 104.9MB. Free memory was 76.0MB in the beginning and 62.1MB in the end (delta: 13.9MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2022-07-12 10:08:46,676 INFO L158 Benchmark]: Boogie Procedure Inliner took 79.18ms. Allocated memory is still 104.9MB. Free memory was 62.1MB in the beginning and 57.9MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2022-07-12 10:08:46,676 INFO L158 Benchmark]: Boogie Preprocessor took 70.86ms. Allocated memory is still 104.9MB. Free memory was 57.9MB in the beginning and 54.4MB in the end (delta: 3.5MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2022-07-12 10:08:46,676 INFO L158 Benchmark]: RCFGBuilder took 1390.30ms. Allocated memory was 104.9MB in the beginning and 174.1MB in the end (delta: 69.2MB). Free memory was 54.4MB in the beginning and 120.4MB in the end (delta: -66.0MB). Peak memory consumption was 36.1MB. Max. memory is 16.1GB. [2022-07-12 10:08:46,677 INFO L158 Benchmark]: TraceAbstraction took 16873.67ms. Allocated memory was 174.1MB in the beginning and 434.1MB in the end (delta: 260.0MB). Free memory was 120.4MB in the beginning and 353.0MB in the end (delta: -232.6MB). Peak memory consumption was 26.4MB. Max. memory is 16.1GB. [2022-07-12 10:08:46,677 INFO L158 Benchmark]: Witness Printer took 53.54ms. Allocated memory is still 434.1MB. Free memory was 353.0MB in the beginning and 346.7MB in the end (delta: 6.3MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2022-07-12 10:08:46,678 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16ms. Allocated memory is still 104.9MB. Free memory was 60.6MB in the beginning and 60.6MB in the end (delta: 45.9kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 486.37ms. Allocated memory is still 104.9MB. Free memory was 76.0MB in the beginning and 62.1MB in the end (delta: 13.9MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 79.18ms. Allocated memory is still 104.9MB. Free memory was 62.1MB in the beginning and 57.9MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Boogie Preprocessor took 70.86ms. Allocated memory is still 104.9MB. Free memory was 57.9MB in the beginning and 54.4MB in the end (delta: 3.5MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * RCFGBuilder took 1390.30ms. Allocated memory was 104.9MB in the beginning and 174.1MB in the end (delta: 69.2MB). Free memory was 54.4MB in the beginning and 120.4MB in the end (delta: -66.0MB). Peak memory consumption was 36.1MB. Max. memory is 16.1GB. * TraceAbstraction took 16873.67ms. Allocated memory was 174.1MB in the beginning and 434.1MB in the end (delta: 260.0MB). Free memory was 120.4MB in the beginning and 353.0MB in the end (delta: -232.6MB). Peak memory consumption was 26.4MB. Max. memory is 16.1GB. * Witness Printer took 53.54ms. Allocated memory is still 434.1MB. Free memory was 353.0MB in the beginning and 346.7MB in the end (delta: 6.3MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 19]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 19]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 19]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 136 locations, 7 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 16.7s, OverallIterations: 20, TraceHistogramMax: 1, PathProgramHistogramMax: 5, EmptinessCheckTime: 0.0s, AutomataDifference: 11.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 1053 SdHoareTripleChecker+Valid, 5.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 1053 mSDsluCounter, 1305 SdHoareTripleChecker+Invalid, 4.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 2126 mSDsCounter, 616 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 4641 IncrementalHoareTripleChecker+Invalid, 5257 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 616 mSolverCounterUnsat, 200 mSDtfsCounter, 4641 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 364 GetRequests, 39 SyntacticMatches, 3 SemanticMatches, 322 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1288 ImplicationChecksByTransitivity, 4.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1015occurred in iteration=15, InterpolantAutomatonStates: 259, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 1.1s SatisfiabilityAnalysisTime, 3.9s InterpolantComputationTime, 1694 NumberOfCodeBlocks, 1694 NumberOfCodeBlocksAsserted, 20 NumberOfCheckSat, 1674 ConstructedInterpolants, 0 QuantifiedInterpolants, 14207 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 20 InterpolantComputations, 20 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 3 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2022-07-12 10:08:46,732 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE