./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 f4b24e32 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-?-f4b24e3 [2022-07-13 21:48:36,840 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-13 21:48:36,842 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-13 21:48:36,882 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-13 21:48:36,882 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-13 21:48:36,892 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-13 21:48:36,894 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-13 21:48:36,896 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-13 21:48:36,897 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-13 21:48:36,902 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-13 21:48:36,903 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-13 21:48:36,904 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-13 21:48:36,905 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-13 21:48:36,906 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-13 21:48:36,907 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-13 21:48:36,908 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-13 21:48:36,909 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-13 21:48:36,910 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-13 21:48:36,913 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-13 21:48:36,917 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-13 21:48:36,918 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-13 21:48:36,919 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-13 21:48:36,920 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-13 21:48:36,920 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-13 21:48:36,922 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-13 21:48:36,925 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-13 21:48:36,926 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-13 21:48:36,926 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-13 21:48:36,927 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-13 21:48:36,927 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-13 21:48:36,928 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-13 21:48:36,929 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-13 21:48:36,930 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-13 21:48:36,930 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-13 21:48:36,931 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-13 21:48:36,931 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-13 21:48:36,931 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-13 21:48:36,932 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-13 21:48:36,932 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-13 21:48:36,932 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-13 21:48:36,933 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-13 21:48:36,934 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-13 21:48:36,935 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-13 21:48:36,962 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-13 21:48:36,962 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-13 21:48:36,963 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-13 21:48:36,963 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-13 21:48:36,964 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-13 21:48:36,964 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-13 21:48:36,964 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-13 21:48:36,965 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-13 21:48:36,965 INFO L138 SettingsManager]: * Use SBE=true [2022-07-13 21:48:36,965 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-13 21:48:36,966 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-13 21:48:36,966 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-13 21:48:36,966 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-13 21:48:36,966 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-13 21:48:36,966 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-13 21:48:36,966 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-13 21:48:36,967 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-13 21:48:36,967 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-13 21:48:36,967 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-13 21:48:36,968 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-13 21:48:36,968 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-13 21:48:36,968 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-13 21:48:36,969 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-13 21:48:36,969 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-13 21:48:36,969 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-13 21:48:36,969 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-13 21:48:36,969 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-13 21:48:36,969 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-13 21:48:36,970 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-13 21:48:36,970 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-13 21:48:36,970 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-13 21:48:36,970 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-13 21:48:36,970 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-13 21:48:36,971 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 48e6a57243e80a87d178da358ff4ad1dd63b86003507ef0dec3764d15038130a [2022-07-13 21:48:37,155 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-13 21:48:37,175 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-13 21:48:37,177 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-13 21:48:37,178 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-13 21:48:37,178 INFO L275 PluginConnector]: CDTParser initialized [2022-07-13 21:48:37,179 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/pthread-wmm/rfi002_tso.i [2022-07-13 21:48:37,248 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/31e058c83/5a129a33ae454b3e97ebf7be1c529fca/FLAGe0501c3bf [2022-07-13 21:48:37,596 INFO L306 CDTParser]: Found 1 translation units. [2022-07-13 21:48:37,596 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-wmm/rfi002_tso.i [2022-07-13 21:48:37,624 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/31e058c83/5a129a33ae454b3e97ebf7be1c529fca/FLAGe0501c3bf [2022-07-13 21:48:37,987 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/31e058c83/5a129a33ae454b3e97ebf7be1c529fca [2022-07-13 21:48:37,989 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-13 21:48:37,990 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-13 21:48:37,991 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-13 21:48:37,991 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-13 21:48:37,993 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-13 21:48:37,994 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.07 09:48:37" (1/1) ... [2022-07-13 21:48:37,995 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@23c3f173 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 09:48:37, skipping insertion in model container [2022-07-13 21:48:37,995 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.07 09:48:37" (1/1) ... [2022-07-13 21:48:38,000 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-13 21:48:38,033 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-13 21:48:38,177 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] [2022-07-13 21:48:38,304 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-13 21:48:38,311 INFO L203 MainTranslator]: Completed pre-run [2022-07-13 21:48:38,319 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] [2022-07-13 21:48:38,357 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-13 21:48:38,381 INFO L208 MainTranslator]: Completed translation [2022-07-13 21:48:38,381 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 09:48:38 WrapperNode [2022-07-13 21:48:38,381 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-13 21:48:38,382 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-13 21:48:38,383 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-13 21:48:38,383 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-13 21:48:38,388 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 09:48:38" (1/1) ... [2022-07-13 21:48:38,405 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 09:48:38" (1/1) ... [2022-07-13 21:48:38,435 INFO L137 Inliner]: procedures = 175, calls = 48, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 551 [2022-07-13 21:48:38,436 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-13 21:48:38,436 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-13 21:48:38,436 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-13 21:48:38,436 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-13 21:48:38,442 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 09:48:38" (1/1) ... [2022-07-13 21:48:38,443 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 09:48:38" (1/1) ... [2022-07-13 21:48:38,451 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 09:48:38" (1/1) ... [2022-07-13 21:48:38,453 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 09:48:38" (1/1) ... [2022-07-13 21:48:38,466 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 09:48:38" (1/1) ... [2022-07-13 21:48:38,470 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 09:48:38" (1/1) ... [2022-07-13 21:48:38,489 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 09:48:38" (1/1) ... [2022-07-13 21:48:38,493 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-13 21:48:38,494 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-13 21:48:38,494 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-13 21:48:38,494 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-13 21:48:38,501 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 09:48:38" (1/1) ... [2022-07-13 21:48:38,506 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-13 21:48:38,514 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 21:48:38,525 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) [2022-07-13 21:48:38,532 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 [2022-07-13 21:48:38,554 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-07-13 21:48:38,554 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-07-13 21:48:38,554 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-13 21:48:38,554 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-07-13 21:48:38,555 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-07-13 21:48:38,555 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2022-07-13 21:48:38,555 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2022-07-13 21:48:38,555 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2022-07-13 21:48:38,555 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2022-07-13 21:48:38,555 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-13 21:48:38,556 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-07-13 21:48:38,556 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-13 21:48:38,556 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-13 21:48:38,557 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-07-13 21:48:38,661 INFO L234 CfgBuilder]: Building ICFG [2022-07-13 21:48:38,662 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-13 21:48:39,265 INFO L275 CfgBuilder]: Performing block encoding [2022-07-13 21:48:39,735 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-13 21:48:39,736 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-07-13 21:48:39,738 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.07 09:48:39 BoogieIcfgContainer [2022-07-13 21:48:39,738 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-13 21:48:39,740 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-13 21:48:39,740 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-13 21:48:39,742 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-13 21:48:39,742 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.07 09:48:37" (1/3) ... [2022-07-13 21:48:39,743 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@141f2aba and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.07 09:48:39, skipping insertion in model container [2022-07-13 21:48:39,743 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 09:48:38" (2/3) ... [2022-07-13 21:48:39,744 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@141f2aba and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.07 09:48:39, skipping insertion in model container [2022-07-13 21:48:39,744 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.07 09:48:39" (3/3) ... [2022-07-13 21:48:39,745 INFO L111 eAbstractionObserver]: Analyzing ICFG rfi002_tso.i [2022-07-13 21:48:39,749 WARN L143 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-07-13 21:48:39,755 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-13 21:48:39,756 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations. [2022-07-13 21:48:39,756 INFO L509 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-07-13 21:48:39,822 INFO L135 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-07-13 21:48:39,858 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 119 places, 114 transitions, 238 flow [2022-07-13 21:48:39,900 INFO L129 PetriNetUnfolder]: 2/112 cut-off events. [2022-07-13 21:48:39,901 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-07-13 21:48:39,904 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. [2022-07-13 21:48:39,904 INFO L82 GeneralOperation]: Start removeDead. Operand has 119 places, 114 transitions, 238 flow [2022-07-13 21:48:39,908 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 117 places, 112 transitions, 230 flow [2022-07-13 21:48:39,914 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-13 21:48:39,919 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@2e9931d0, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@3d68142c [2022-07-13 21:48:39,919 INFO L358 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2022-07-13 21:48:39,927 INFO L129 PetriNetUnfolder]: 0/72 cut-off events. [2022-07-13 21:48:39,928 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-07-13 21:48:39,928 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 21:48:39,929 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] [2022-07-13 21:48:39,929 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting P1Err0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, P1Err1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-07-13 21:48:39,932 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 21:48:39,932 INFO L85 PathProgramCache]: Analyzing trace with hash 391948507, now seen corresponding path program 1 times [2022-07-13 21:48:39,938 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 21:48:39,938 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1005585393] [2022-07-13 21:48:39,939 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 21:48:39,939 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 21:48:40,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:48:40,208 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 21:48:40,209 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 21:48:40,209 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1005585393] [2022-07-13 21:48:40,210 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1005585393] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 21:48:40,210 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 21:48:40,210 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-13 21:48:40,211 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [397576201] [2022-07-13 21:48:40,212 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 21:48:40,218 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-13 21:48:40,218 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 21:48:40,242 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-13 21:48:40,244 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 21:48:40,247 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 96 out of 114 [2022-07-13 21:48:40,251 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) [2022-07-13 21:48:40,251 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 21:48:40,251 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 96 of 114 [2022-07-13 21:48:40,252 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-13 21:48:40,399 INFO L129 PetriNetUnfolder]: 111/381 cut-off events. [2022-07-13 21:48:40,400 INFO L130 PetriNetUnfolder]: For 5/5 co-relation queries the response was YES. [2022-07-13 21:48:40,401 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. [2022-07-13 21:48:40,403 INFO L132 encePairwiseOnDemand]: 109/114 looper letters, 17 selfloop transitions, 2 changer transitions 0/113 dead transitions. [2022-07-13 21:48:40,404 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 117 places, 113 transitions, 270 flow [2022-07-13 21:48:40,406 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-13 21:48:40,408 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-07-13 21:48:40,416 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 312 transitions. [2022-07-13 21:48:40,420 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.9122807017543859 [2022-07-13 21:48:40,420 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 312 transitions. [2022-07-13 21:48:40,421 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 312 transitions. [2022-07-13 21:48:40,423 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 21:48:40,425 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 312 transitions. [2022-07-13 21:48:40,449 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) [2022-07-13 21:48:40,453 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) [2022-07-13 21:48:40,454 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) [2022-07-13 21:48:40,455 INFO L186 Difference]: Start difference. First operand has 117 places, 112 transitions, 230 flow. Second operand 3 states and 312 transitions. [2022-07-13 21:48:40,456 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 117 places, 113 transitions, 270 flow [2022-07-13 21:48:40,458 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 115 places, 113 transitions, 268 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-07-13 21:48:40,460 INFO L242 Difference]: Finished difference. Result has 115 places, 108 transitions, 224 flow [2022-07-13 21:48:40,461 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} [2022-07-13 21:48:40,464 INFO L279 CegarLoopForPetriNet]: 117 programPoint places, -2 predicate places. [2022-07-13 21:48:40,464 INFO L495 AbstractCegarLoop]: Abstraction has has 115 places, 108 transitions, 224 flow [2022-07-13 21:48:40,464 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) [2022-07-13 21:48:40,465 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 21:48:40,465 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] [2022-07-13 21:48:40,465 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-13 21:48:40,465 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting P1Err1ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, P1Err1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-07-13 21:48:40,466 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 21:48:40,466 INFO L85 PathProgramCache]: Analyzing trace with hash -734495959, now seen corresponding path program 1 times [2022-07-13 21:48:40,466 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 21:48:40,466 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1223913795] [2022-07-13 21:48:40,466 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 21:48:40,466 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 21:48:40,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:48:40,535 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 21:48:40,535 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 21:48:40,536 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1223913795] [2022-07-13 21:48:40,536 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1223913795] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 21:48:40,536 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 21:48:40,536 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-13 21:48:40,536 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1536984354] [2022-07-13 21:48:40,536 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 21:48:40,537 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-13 21:48:40,537 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 21:48:40,538 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-13 21:48:40,538 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 21:48:40,539 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 96 out of 114 [2022-07-13 21:48:40,539 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) [2022-07-13 21:48:40,539 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 21:48:40,539 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 96 of 114 [2022-07-13 21:48:40,539 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-13 21:48:40,642 INFO L129 PetriNetUnfolder]: 94/419 cut-off events. [2022-07-13 21:48:40,643 INFO L130 PetriNetUnfolder]: For 12/12 co-relation queries the response was YES. [2022-07-13 21:48:40,645 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. [2022-07-13 21:48:40,647 INFO L132 encePairwiseOnDemand]: 111/114 looper letters, 16 selfloop transitions, 2 changer transitions 0/112 dead transitions. [2022-07-13 21:48:40,647 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 116 places, 112 transitions, 268 flow [2022-07-13 21:48:40,648 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-13 21:48:40,649 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-07-13 21:48:40,650 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 307 transitions. [2022-07-13 21:48:40,650 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8976608187134503 [2022-07-13 21:48:40,651 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 307 transitions. [2022-07-13 21:48:40,651 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 307 transitions. [2022-07-13 21:48:40,651 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 21:48:40,651 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 307 transitions. [2022-07-13 21:48:40,653 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) [2022-07-13 21:48:40,655 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) [2022-07-13 21:48:40,655 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) [2022-07-13 21:48:40,661 INFO L186 Difference]: Start difference. First operand has 115 places, 108 transitions, 224 flow. Second operand 3 states and 307 transitions. [2022-07-13 21:48:40,661 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 116 places, 112 transitions, 268 flow [2022-07-13 21:48:40,662 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 114 places, 112 transitions, 264 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-07-13 21:48:40,665 INFO L242 Difference]: Finished difference. Result has 114 places, 107 transitions, 222 flow [2022-07-13 21:48:40,665 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} [2022-07-13 21:48:40,666 INFO L279 CegarLoopForPetriNet]: 117 programPoint places, -3 predicate places. [2022-07-13 21:48:40,666 INFO L495 AbstractCegarLoop]: Abstraction has has 114 places, 107 transitions, 222 flow [2022-07-13 21:48:40,667 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) [2022-07-13 21:48:40,667 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 21:48:40,667 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] [2022-07-13 21:48:40,668 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-13 21:48:40,668 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, P1Err1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-07-13 21:48:40,670 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 21:48:40,671 INFO L85 PathProgramCache]: Analyzing trace with hash 26389779, now seen corresponding path program 1 times [2022-07-13 21:48:40,671 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 21:48:40,671 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [406672682] [2022-07-13 21:48:40,671 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 21:48:40,671 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 21:48:40,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:48:40,884 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 21:48:40,884 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 21:48:40,884 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [406672682] [2022-07-13 21:48:40,885 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [406672682] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 21:48:40,885 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 21:48:40,885 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-13 21:48:40,885 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2019803545] [2022-07-13 21:48:40,885 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 21:48:40,886 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-13 21:48:40,886 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 21:48:40,886 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-13 21:48:40,887 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-13 21:48:40,887 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 90 out of 114 [2022-07-13 21:48:40,888 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) [2022-07-13 21:48:40,888 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 21:48:40,888 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 90 of 114 [2022-07-13 21:48:40,889 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-13 21:48:41,267 INFO L129 PetriNetUnfolder]: 336/1001 cut-off events. [2022-07-13 21:48:41,267 INFO L130 PetriNetUnfolder]: For 23/23 co-relation queries the response was YES. [2022-07-13 21:48:41,269 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. [2022-07-13 21:48:41,270 INFO L132 encePairwiseOnDemand]: 108/114 looper letters, 20 selfloop transitions, 2 changer transitions 52/153 dead transitions. [2022-07-13 21:48:41,271 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 122 places, 153 transitions, 450 flow [2022-07-13 21:48:41,271 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-13 21:48:41,271 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-07-13 21:48:41,273 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 877 transitions. [2022-07-13 21:48:41,273 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.854775828460039 [2022-07-13 21:48:41,273 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 877 transitions. [2022-07-13 21:48:41,273 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 877 transitions. [2022-07-13 21:48:41,274 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 21:48:41,274 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 877 transitions. [2022-07-13 21:48:41,275 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) [2022-07-13 21:48:41,277 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) [2022-07-13 21:48:41,277 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) [2022-07-13 21:48:41,278 INFO L186 Difference]: Start difference. First operand has 114 places, 107 transitions, 222 flow. Second operand 9 states and 877 transitions. [2022-07-13 21:48:41,278 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 122 places, 153 transitions, 450 flow [2022-07-13 21:48:41,279 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 120 places, 153 transitions, 440 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-07-13 21:48:41,280 INFO L242 Difference]: Finished difference. Result has 127 places, 97 transitions, 218 flow [2022-07-13 21:48:41,281 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} [2022-07-13 21:48:41,281 INFO L279 CegarLoopForPetriNet]: 117 programPoint places, 10 predicate places. [2022-07-13 21:48:41,281 INFO L495 AbstractCegarLoop]: Abstraction has has 127 places, 97 transitions, 218 flow [2022-07-13 21:48:41,282 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) [2022-07-13 21:48:41,282 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 21:48:41,282 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] [2022-07-13 21:48:41,282 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-07-13 21:48:41,282 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, P1Err1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-07-13 21:48:41,283 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 21:48:41,283 INFO L85 PathProgramCache]: Analyzing trace with hash -705378320, now seen corresponding path program 1 times [2022-07-13 21:48:41,283 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 21:48:41,283 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1047876065] [2022-07-13 21:48:41,283 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 21:48:41,283 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 21:48:41,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:48:41,453 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 21:48:41,454 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 21:48:41,454 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1047876065] [2022-07-13 21:48:41,454 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1047876065] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 21:48:41,454 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 21:48:41,454 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-07-13 21:48:41,454 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1634985606] [2022-07-13 21:48:41,455 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 21:48:41,455 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-13 21:48:41,455 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 21:48:41,455 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-13 21:48:41,456 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-07-13 21:48:41,456 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 87 out of 114 [2022-07-13 21:48:41,457 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) [2022-07-13 21:48:41,457 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 21:48:41,457 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 87 of 114 [2022-07-13 21:48:41,457 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-13 21:48:41,794 INFO L129 PetriNetUnfolder]: 247/608 cut-off events. [2022-07-13 21:48:41,794 INFO L130 PetriNetUnfolder]: For 155/155 co-relation queries the response was YES. [2022-07-13 21:48:41,796 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. [2022-07-13 21:48:41,797 INFO L132 encePairwiseOnDemand]: 105/114 looper letters, 23 selfloop transitions, 5 changer transitions 31/135 dead transitions. [2022-07-13 21:48:41,798 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 121 places, 135 transitions, 435 flow [2022-07-13 21:48:41,798 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-07-13 21:48:41,798 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2022-07-13 21:48:41,800 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 1018 transitions. [2022-07-13 21:48:41,800 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8118022328548644 [2022-07-13 21:48:41,800 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 1018 transitions. [2022-07-13 21:48:41,801 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 1018 transitions. [2022-07-13 21:48:41,801 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 21:48:41,801 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 1018 transitions. [2022-07-13 21:48:41,803 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) [2022-07-13 21:48:41,805 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) [2022-07-13 21:48:41,805 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) [2022-07-13 21:48:41,805 INFO L186 Difference]: Start difference. First operand has 127 places, 97 transitions, 218 flow. Second operand 11 states and 1018 transitions. [2022-07-13 21:48:41,806 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 121 places, 135 transitions, 435 flow [2022-07-13 21:48:41,809 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 113 places, 135 transitions, 401 flow, removed 14 selfloop flow, removed 8 redundant places. [2022-07-13 21:48:41,811 INFO L242 Difference]: Finished difference. Result has 120 places, 99 transitions, 249 flow [2022-07-13 21:48:41,811 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} [2022-07-13 21:48:41,812 INFO L279 CegarLoopForPetriNet]: 117 programPoint places, 3 predicate places. [2022-07-13 21:48:41,812 INFO L495 AbstractCegarLoop]: Abstraction has has 120 places, 99 transitions, 249 flow [2022-07-13 21:48:41,812 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) [2022-07-13 21:48:41,812 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 21:48:41,813 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] [2022-07-13 21:48:41,813 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-07-13 21:48:41,813 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, P1Err1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-07-13 21:48:41,813 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 21:48:41,813 INFO L85 PathProgramCache]: Analyzing trace with hash -459322686, now seen corresponding path program 1 times [2022-07-13 21:48:41,814 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 21:48:41,814 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1113914555] [2022-07-13 21:48:41,814 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 21:48:41,814 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 21:48:41,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:48:41,983 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 21:48:41,983 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 21:48:41,983 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1113914555] [2022-07-13 21:48:41,984 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1113914555] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 21:48:41,984 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 21:48:41,984 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-13 21:48:41,984 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [736523838] [2022-07-13 21:48:41,984 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 21:48:41,985 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-13 21:48:41,985 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 21:48:41,985 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-13 21:48:41,985 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-13 21:48:41,986 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 90 out of 114 [2022-07-13 21:48:41,986 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) [2022-07-13 21:48:41,987 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 21:48:41,987 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 90 of 114 [2022-07-13 21:48:41,987 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-13 21:48:42,262 INFO L129 PetriNetUnfolder]: 167/495 cut-off events. [2022-07-13 21:48:42,263 INFO L130 PetriNetUnfolder]: For 473/473 co-relation queries the response was YES. [2022-07-13 21:48:42,264 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. [2022-07-13 21:48:42,266 INFO L132 encePairwiseOnDemand]: 108/114 looper letters, 24 selfloop transitions, 2 changer transitions 28/134 dead transitions. [2022-07-13 21:48:42,266 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 122 places, 134 transitions, 506 flow [2022-07-13 21:48:42,267 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-13 21:48:42,267 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-07-13 21:48:42,268 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 865 transitions. [2022-07-13 21:48:42,268 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8430799220272904 [2022-07-13 21:48:42,268 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 865 transitions. [2022-07-13 21:48:42,268 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 865 transitions. [2022-07-13 21:48:42,269 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 21:48:42,269 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 865 transitions. [2022-07-13 21:48:42,270 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) [2022-07-13 21:48:42,272 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) [2022-07-13 21:48:42,272 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) [2022-07-13 21:48:42,272 INFO L186 Difference]: Start difference. First operand has 120 places, 99 transitions, 249 flow. Second operand 9 states and 865 transitions. [2022-07-13 21:48:42,272 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 122 places, 134 transitions, 506 flow [2022-07-13 21:48:42,274 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 116 places, 134 transitions, 483 flow, removed 8 selfloop flow, removed 6 redundant places. [2022-07-13 21:48:42,276 INFO L242 Difference]: Finished difference. Result has 123 places, 99 transitions, 254 flow [2022-07-13 21:48:42,276 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} [2022-07-13 21:48:42,277 INFO L279 CegarLoopForPetriNet]: 117 programPoint places, 6 predicate places. [2022-07-13 21:48:42,277 INFO L495 AbstractCegarLoop]: Abstraction has has 123 places, 99 transitions, 254 flow [2022-07-13 21:48:42,277 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) [2022-07-13 21:48:42,277 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 21:48:42,277 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] [2022-07-13 21:48:42,278 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-07-13 21:48:42,278 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, P1Err1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-07-13 21:48:42,278 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 21:48:42,278 INFO L85 PathProgramCache]: Analyzing trace with hash -1724920748, now seen corresponding path program 1 times [2022-07-13 21:48:42,278 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 21:48:42,279 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [542217308] [2022-07-13 21:48:42,279 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 21:48:42,279 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 21:48:42,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:48:42,720 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 21:48:42,720 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 21:48:42,720 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [542217308] [2022-07-13 21:48:42,720 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [542217308] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 21:48:42,720 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 21:48:42,720 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2022-07-13 21:48:42,720 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1296225473] [2022-07-13 21:48:42,720 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 21:48:42,721 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-07-13 21:48:42,721 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 21:48:42,721 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-07-13 21:48:42,721 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=219, Unknown=0, NotChecked=0, Total=272 [2022-07-13 21:48:42,722 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 78 out of 114 [2022-07-13 21:48:42,723 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) [2022-07-13 21:48:42,723 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 21:48:42,723 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 78 of 114 [2022-07-13 21:48:42,723 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-13 21:48:43,466 INFO L129 PetriNetUnfolder]: 403/885 cut-off events. [2022-07-13 21:48:43,467 INFO L130 PetriNetUnfolder]: For 869/869 co-relation queries the response was YES. [2022-07-13 21:48:43,469 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. [2022-07-13 21:48:43,472 INFO L132 encePairwiseOnDemand]: 95/114 looper letters, 60 selfloop transitions, 24 changer transitions 39/190 dead transitions. [2022-07-13 21:48:43,472 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 135 places, 190 transitions, 853 flow [2022-07-13 21:48:43,473 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-07-13 21:48:43,473 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2022-07-13 21:48:43,475 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 1605 transitions. [2022-07-13 21:48:43,476 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7409972299168975 [2022-07-13 21:48:43,476 INFO L72 ComplementDD]: Start complementDD. Operand 19 states and 1605 transitions. [2022-07-13 21:48:43,476 INFO L73 IsDeterministic]: Start isDeterministic. Operand 19 states and 1605 transitions. [2022-07-13 21:48:43,477 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 21:48:43,477 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 19 states and 1605 transitions. [2022-07-13 21:48:43,479 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) [2022-07-13 21:48:43,481 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) [2022-07-13 21:48:43,482 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) [2022-07-13 21:48:43,482 INFO L186 Difference]: Start difference. First operand has 123 places, 99 transitions, 254 flow. Second operand 19 states and 1605 transitions. [2022-07-13 21:48:43,482 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 135 places, 190 transitions, 853 flow [2022-07-13 21:48:43,486 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 127 places, 190 transitions, 795 flow, removed 24 selfloop flow, removed 8 redundant places. [2022-07-13 21:48:43,488 INFO L242 Difference]: Finished difference. Result has 138 places, 117 transitions, 431 flow [2022-07-13 21:48:43,488 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} [2022-07-13 21:48:43,489 INFO L279 CegarLoopForPetriNet]: 117 programPoint places, 21 predicate places. [2022-07-13 21:48:43,489 INFO L495 AbstractCegarLoop]: Abstraction has has 138 places, 117 transitions, 431 flow [2022-07-13 21:48:43,490 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) [2022-07-13 21:48:43,490 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 21:48:43,490 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] [2022-07-13 21:48:43,490 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-07-13 21:48:43,490 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, P1Err1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-07-13 21:48:43,491 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 21:48:43,491 INFO L85 PathProgramCache]: Analyzing trace with hash 1152284406, now seen corresponding path program 2 times [2022-07-13 21:48:43,491 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 21:48:43,491 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1927254690] [2022-07-13 21:48:43,491 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 21:48:43,491 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 21:48:43,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:48:43,807 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 21:48:43,807 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 21:48:43,807 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1927254690] [2022-07-13 21:48:43,807 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1927254690] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 21:48:43,809 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 21:48:43,809 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-07-13 21:48:43,811 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1342877858] [2022-07-13 21:48:43,811 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 21:48:43,812 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-07-13 21:48:43,812 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 21:48:43,812 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-07-13 21:48:43,813 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=141, Unknown=0, NotChecked=0, Total=182 [2022-07-13 21:48:43,813 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 83 out of 114 [2022-07-13 21:48:43,816 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) [2022-07-13 21:48:43,816 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 21:48:43,816 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 83 of 114 [2022-07-13 21:48:43,817 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-13 21:48:44,359 INFO L129 PetriNetUnfolder]: 223/617 cut-off events. [2022-07-13 21:48:44,359 INFO L130 PetriNetUnfolder]: For 1660/2957 co-relation queries the response was YES. [2022-07-13 21:48:44,362 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. [2022-07-13 21:48:44,364 INFO L132 encePairwiseOnDemand]: 101/114 looper letters, 51 selfloop transitions, 21 changer transitions 15/163 dead transitions. [2022-07-13 21:48:44,364 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 146 places, 163 transitions, 928 flow [2022-07-13 21:48:44,365 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-07-13 21:48:44,365 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2022-07-13 21:48:44,367 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 1310 transitions. [2022-07-13 21:48:44,367 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7660818713450293 [2022-07-13 21:48:44,367 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 1310 transitions. [2022-07-13 21:48:44,367 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 1310 transitions. [2022-07-13 21:48:44,368 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 21:48:44,368 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 1310 transitions. [2022-07-13 21:48:44,370 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) [2022-07-13 21:48:44,372 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) [2022-07-13 21:48:44,373 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) [2022-07-13 21:48:44,373 INFO L186 Difference]: Start difference. First operand has 138 places, 117 transitions, 431 flow. Second operand 15 states and 1310 transitions. [2022-07-13 21:48:44,373 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 146 places, 163 transitions, 928 flow [2022-07-13 21:48:44,377 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 139 places, 163 transitions, 866 flow, removed 27 selfloop flow, removed 7 redundant places. [2022-07-13 21:48:44,379 INFO L242 Difference]: Finished difference. Result has 148 places, 130 transitions, 592 flow [2022-07-13 21:48:44,380 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} [2022-07-13 21:48:44,380 INFO L279 CegarLoopForPetriNet]: 117 programPoint places, 31 predicate places. [2022-07-13 21:48:44,380 INFO L495 AbstractCegarLoop]: Abstraction has has 148 places, 130 transitions, 592 flow [2022-07-13 21:48:44,381 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) [2022-07-13 21:48:44,381 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 21:48:44,381 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] [2022-07-13 21:48:44,381 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-07-13 21:48:44,381 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, P1Err1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-07-13 21:48:44,381 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 21:48:44,382 INFO L85 PathProgramCache]: Analyzing trace with hash 813395958, now seen corresponding path program 3 times [2022-07-13 21:48:44,382 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 21:48:44,382 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2007235573] [2022-07-13 21:48:44,382 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 21:48:44,382 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 21:48:44,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:48:44,698 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 21:48:44,698 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 21:48:44,698 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2007235573] [2022-07-13 21:48:44,698 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2007235573] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 21:48:44,698 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 21:48:44,698 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-07-13 21:48:44,698 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [539608013] [2022-07-13 21:48:44,698 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 21:48:44,699 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-07-13 21:48:44,699 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 21:48:44,699 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-07-13 21:48:44,699 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=140, Unknown=0, NotChecked=0, Total=182 [2022-07-13 21:48:44,700 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 83 out of 114 [2022-07-13 21:48:44,701 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) [2022-07-13 21:48:44,701 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 21:48:44,701 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 83 of 114 [2022-07-13 21:48:44,701 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-13 21:48:45,296 INFO L129 PetriNetUnfolder]: 262/718 cut-off events. [2022-07-13 21:48:45,297 INFO L130 PetriNetUnfolder]: For 3742/5639 co-relation queries the response was YES. [2022-07-13 21:48:45,299 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. [2022-07-13 21:48:45,302 INFO L132 encePairwiseOnDemand]: 102/114 looper letters, 55 selfloop transitions, 24 changer transitions 18/173 dead transitions. [2022-07-13 21:48:45,302 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 158 places, 173 transitions, 1164 flow [2022-07-13 21:48:45,303 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-13 21:48:45,303 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2022-07-13 21:48:45,305 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 1226 transitions. [2022-07-13 21:48:45,305 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.768170426065163 [2022-07-13 21:48:45,306 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 1226 transitions. [2022-07-13 21:48:45,306 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 1226 transitions. [2022-07-13 21:48:45,306 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 21:48:45,306 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 1226 transitions. [2022-07-13 21:48:45,308 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) [2022-07-13 21:48:45,310 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) [2022-07-13 21:48:45,310 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) [2022-07-13 21:48:45,310 INFO L186 Difference]: Start difference. First operand has 148 places, 130 transitions, 592 flow. Second operand 14 states and 1226 transitions. [2022-07-13 21:48:45,310 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 158 places, 173 transitions, 1164 flow [2022-07-13 21:48:45,317 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 151 places, 173 transitions, 1101 flow, removed 24 selfloop flow, removed 7 redundant places. [2022-07-13 21:48:45,320 INFO L242 Difference]: Finished difference. Result has 158 places, 134 transitions, 690 flow [2022-07-13 21:48:45,320 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} [2022-07-13 21:48:45,322 INFO L279 CegarLoopForPetriNet]: 117 programPoint places, 41 predicate places. [2022-07-13 21:48:45,322 INFO L495 AbstractCegarLoop]: Abstraction has has 158 places, 134 transitions, 690 flow [2022-07-13 21:48:45,322 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) [2022-07-13 21:48:45,322 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 21:48:45,322 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] [2022-07-13 21:48:45,323 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-07-13 21:48:45,323 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, P1Err1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-07-13 21:48:45,323 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 21:48:45,323 INFO L85 PathProgramCache]: Analyzing trace with hash 1874237520, now seen corresponding path program 4 times [2022-07-13 21:48:45,323 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 21:48:45,323 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [510287650] [2022-07-13 21:48:45,323 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 21:48:45,323 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 21:48:45,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:48:45,695 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 21:48:45,695 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 21:48:45,695 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [510287650] [2022-07-13 21:48:45,695 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [510287650] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 21:48:45,695 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 21:48:45,695 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2022-07-13 21:48:45,695 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [837673249] [2022-07-13 21:48:45,695 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 21:48:45,696 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-07-13 21:48:45,696 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 21:48:45,696 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-07-13 21:48:45,696 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=224, Unknown=0, NotChecked=0, Total=272 [2022-07-13 21:48:45,697 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 78 out of 114 [2022-07-13 21:48:45,698 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) [2022-07-13 21:48:45,698 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 21:48:45,698 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 78 of 114 [2022-07-13 21:48:45,698 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-13 21:48:46,701 INFO L129 PetriNetUnfolder]: 516/1154 cut-off events. [2022-07-13 21:48:46,701 INFO L130 PetriNetUnfolder]: For 7135/7703 co-relation queries the response was YES. [2022-07-13 21:48:46,705 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. [2022-07-13 21:48:46,710 INFO L132 encePairwiseOnDemand]: 99/114 looper letters, 71 selfloop transitions, 31 changer transitions 56/225 dead transitions. [2022-07-13 21:48:46,710 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 178 places, 225 transitions, 1773 flow [2022-07-13 21:48:46,711 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-07-13 21:48:46,711 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2022-07-13 21:48:46,714 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 2002 transitions. [2022-07-13 21:48:46,715 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7317251461988304 [2022-07-13 21:48:46,715 INFO L72 ComplementDD]: Start complementDD. Operand 24 states and 2002 transitions. [2022-07-13 21:48:46,716 INFO L73 IsDeterministic]: Start isDeterministic. Operand 24 states and 2002 transitions. [2022-07-13 21:48:46,717 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 21:48:46,718 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 24 states and 2002 transitions. [2022-07-13 21:48:46,721 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) [2022-07-13 21:48:46,725 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) [2022-07-13 21:48:46,726 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) [2022-07-13 21:48:46,726 INFO L186 Difference]: Start difference. First operand has 158 places, 134 transitions, 690 flow. Second operand 24 states and 2002 transitions. [2022-07-13 21:48:46,726 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 178 places, 225 transitions, 1773 flow [2022-07-13 21:48:46,737 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 161 places, 225 transitions, 1490 flow, removed 116 selfloop flow, removed 17 redundant places. [2022-07-13 21:48:46,740 INFO L242 Difference]: Finished difference. Result has 175 places, 134 transitions, 716 flow [2022-07-13 21:48:46,741 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} [2022-07-13 21:48:46,741 INFO L279 CegarLoopForPetriNet]: 117 programPoint places, 58 predicate places. [2022-07-13 21:48:46,742 INFO L495 AbstractCegarLoop]: Abstraction has has 175 places, 134 transitions, 716 flow [2022-07-13 21:48:46,742 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) [2022-07-13 21:48:46,742 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 21:48:46,742 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] [2022-07-13 21:48:46,743 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-07-13 21:48:46,743 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, P1Err1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-07-13 21:48:46,743 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 21:48:46,743 INFO L85 PathProgramCache]: Analyzing trace with hash -2006059476, now seen corresponding path program 5 times [2022-07-13 21:48:46,743 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 21:48:46,744 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1690507147] [2022-07-13 21:48:46,744 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 21:48:46,744 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 21:48:46,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:48:46,960 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 21:48:46,960 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 21:48:46,961 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1690507147] [2022-07-13 21:48:46,964 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1690507147] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 21:48:46,964 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 21:48:46,964 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-13 21:48:46,964 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2038680716] [2022-07-13 21:48:46,964 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 21:48:46,965 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-13 21:48:46,965 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 21:48:46,965 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-13 21:48:46,966 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2022-07-13 21:48:46,967 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 83 out of 114 [2022-07-13 21:48:46,968 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) [2022-07-13 21:48:46,968 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 21:48:46,968 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 83 of 114 [2022-07-13 21:48:46,968 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-13 21:48:47,575 INFO L129 PetriNetUnfolder]: 274/747 cut-off events. [2022-07-13 21:48:47,575 INFO L130 PetriNetUnfolder]: For 4856/8175 co-relation queries the response was YES. [2022-07-13 21:48:47,578 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. [2022-07-13 21:48:47,581 INFO L132 encePairwiseOnDemand]: 100/114 looper letters, 48 selfloop transitions, 22 changer transitions 28/175 dead transitions. [2022-07-13 21:48:47,581 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 171 places, 175 transitions, 1370 flow [2022-07-13 21:48:47,581 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-07-13 21:48:47,582 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2022-07-13 21:48:47,582 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1143 transitions. [2022-07-13 21:48:47,583 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.771255060728745 [2022-07-13 21:48:47,583 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 1143 transitions. [2022-07-13 21:48:47,583 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 1143 transitions. [2022-07-13 21:48:47,583 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 21:48:47,583 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 1143 transitions. [2022-07-13 21:48:47,585 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) [2022-07-13 21:48:47,586 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) [2022-07-13 21:48:47,587 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) [2022-07-13 21:48:47,587 INFO L186 Difference]: Start difference. First operand has 175 places, 134 transitions, 716 flow. Second operand 13 states and 1143 transitions. [2022-07-13 21:48:47,587 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 171 places, 175 transitions, 1370 flow [2022-07-13 21:48:47,596 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 151 places, 175 transitions, 1191 flow, removed 76 selfloop flow, removed 20 redundant places. [2022-07-13 21:48:47,598 INFO L242 Difference]: Finished difference. Result has 159 places, 141 transitions, 818 flow [2022-07-13 21:48:47,599 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} [2022-07-13 21:48:47,599 INFO L279 CegarLoopForPetriNet]: 117 programPoint places, 42 predicate places. [2022-07-13 21:48:47,599 INFO L495 AbstractCegarLoop]: Abstraction has has 159 places, 141 transitions, 818 flow [2022-07-13 21:48:47,599 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) [2022-07-13 21:48:47,600 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 21:48:47,600 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] [2022-07-13 21:48:47,600 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-07-13 21:48:47,600 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, P1Err1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-07-13 21:48:47,600 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 21:48:47,600 INFO L85 PathProgramCache]: Analyzing trace with hash -177062592, now seen corresponding path program 1 times [2022-07-13 21:48:47,600 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 21:48:47,600 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [667707326] [2022-07-13 21:48:47,600 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 21:48:47,600 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 21:48:47,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:48:47,718 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 21:48:47,718 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 21:48:47,718 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [667707326] [2022-07-13 21:48:47,718 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [667707326] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 21:48:47,718 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 21:48:47,718 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-13 21:48:47,718 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [329844256] [2022-07-13 21:48:47,718 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 21:48:47,719 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-13 21:48:47,719 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 21:48:47,719 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-13 21:48:47,719 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-13 21:48:47,720 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 87 out of 114 [2022-07-13 21:48:47,720 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) [2022-07-13 21:48:47,720 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 21:48:47,720 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 87 of 114 [2022-07-13 21:48:47,720 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-13 21:48:48,037 INFO L129 PetriNetUnfolder]: 266/764 cut-off events. [2022-07-13 21:48:48,037 INFO L130 PetriNetUnfolder]: For 4681/8134 co-relation queries the response was YES. [2022-07-13 21:48:48,040 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. [2022-07-13 21:48:48,043 INFO L132 encePairwiseOnDemand]: 104/114 looper letters, 44 selfloop transitions, 12 changer transitions 26/165 dead transitions. [2022-07-13 21:48:48,043 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 159 places, 165 transitions, 1228 flow [2022-07-13 21:48:48,043 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-13 21:48:48,043 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-07-13 21:48:48,044 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 653 transitions. [2022-07-13 21:48:48,044 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.818295739348371 [2022-07-13 21:48:48,044 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 653 transitions. [2022-07-13 21:48:48,044 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 653 transitions. [2022-07-13 21:48:48,044 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 21:48:48,044 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 653 transitions. [2022-07-13 21:48:48,045 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) [2022-07-13 21:48:48,046 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) [2022-07-13 21:48:48,046 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) [2022-07-13 21:48:48,046 INFO L186 Difference]: Start difference. First operand has 159 places, 141 transitions, 818 flow. Second operand 7 states and 653 transitions. [2022-07-13 21:48:48,046 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 159 places, 165 transitions, 1228 flow [2022-07-13 21:48:48,056 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 151 places, 165 transitions, 1177 flow, removed 18 selfloop flow, removed 8 redundant places. [2022-07-13 21:48:48,058 INFO L242 Difference]: Finished difference. Result has 156 places, 137 transitions, 784 flow [2022-07-13 21:48:48,058 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} [2022-07-13 21:48:48,058 INFO L279 CegarLoopForPetriNet]: 117 programPoint places, 39 predicate places. [2022-07-13 21:48:48,058 INFO L495 AbstractCegarLoop]: Abstraction has has 156 places, 137 transitions, 784 flow [2022-07-13 21:48:48,059 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) [2022-07-13 21:48:48,059 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 21:48:48,059 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] [2022-07-13 21:48:48,059 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-07-13 21:48:48,059 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, P1Err1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-07-13 21:48:48,059 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 21:48:48,059 INFO L85 PathProgramCache]: Analyzing trace with hash -1211062210, now seen corresponding path program 2 times [2022-07-13 21:48:48,059 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 21:48:48,060 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [389861519] [2022-07-13 21:48:48,060 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 21:48:48,060 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 21:48:48,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:48:48,191 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 21:48:48,192 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 21:48:48,192 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [389861519] [2022-07-13 21:48:48,192 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [389861519] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 21:48:48,192 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 21:48:48,192 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-13 21:48:48,192 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [673412719] [2022-07-13 21:48:48,192 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 21:48:48,192 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-13 21:48:48,192 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 21:48:48,193 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-13 21:48:48,193 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2022-07-13 21:48:48,193 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 86 out of 114 [2022-07-13 21:48:48,194 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) [2022-07-13 21:48:48,194 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 21:48:48,194 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 86 of 114 [2022-07-13 21:48:48,194 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-13 21:48:48,507 INFO L129 PetriNetUnfolder]: 225/692 cut-off events. [2022-07-13 21:48:48,507 INFO L130 PetriNetUnfolder]: For 5161/10185 co-relation queries the response was YES. [2022-07-13 21:48:48,511 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. [2022-07-13 21:48:48,513 INFO L132 encePairwiseOnDemand]: 104/114 looper letters, 44 selfloop transitions, 13 changer transitions 27/163 dead transitions. [2022-07-13 21:48:48,513 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 159 places, 163 transitions, 1217 flow [2022-07-13 21:48:48,514 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-07-13 21:48:48,514 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-07-13 21:48:48,514 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 732 transitions. [2022-07-13 21:48:48,515 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8026315789473685 [2022-07-13 21:48:48,515 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 732 transitions. [2022-07-13 21:48:48,515 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 732 transitions. [2022-07-13 21:48:48,515 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 21:48:48,515 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 732 transitions. [2022-07-13 21:48:48,516 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) [2022-07-13 21:48:48,517 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) [2022-07-13 21:48:48,517 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) [2022-07-13 21:48:48,517 INFO L186 Difference]: Start difference. First operand has 156 places, 137 transitions, 784 flow. Second operand 8 states and 732 transitions. [2022-07-13 21:48:48,518 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 159 places, 163 transitions, 1217 flow [2022-07-13 21:48:48,526 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 154 places, 163 transitions, 1173 flow, removed 16 selfloop flow, removed 5 redundant places. [2022-07-13 21:48:48,528 INFO L242 Difference]: Finished difference. Result has 159 places, 134 transitions, 787 flow [2022-07-13 21:48:48,528 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} [2022-07-13 21:48:48,529 INFO L279 CegarLoopForPetriNet]: 117 programPoint places, 42 predicate places. [2022-07-13 21:48:48,529 INFO L495 AbstractCegarLoop]: Abstraction has has 159 places, 134 transitions, 787 flow [2022-07-13 21:48:48,529 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) [2022-07-13 21:48:48,529 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 21:48:48,529 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] [2022-07-13 21:48:48,530 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-07-13 21:48:48,530 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, P1Err1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-07-13 21:48:48,530 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 21:48:48,530 INFO L85 PathProgramCache]: Analyzing trace with hash -1329660998, now seen corresponding path program 3 times [2022-07-13 21:48:48,530 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 21:48:48,530 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [451720199] [2022-07-13 21:48:48,530 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 21:48:48,531 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 21:48:48,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:48:48,746 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 21:48:48,747 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 21:48:48,748 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [451720199] [2022-07-13 21:48:48,748 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [451720199] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 21:48:48,748 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 21:48:48,748 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-07-13 21:48:48,748 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [548855518] [2022-07-13 21:48:48,748 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 21:48:48,749 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-07-13 21:48:48,749 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 21:48:48,749 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-07-13 21:48:48,749 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2022-07-13 21:48:48,750 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 81 out of 114 [2022-07-13 21:48:48,751 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) [2022-07-13 21:48:48,751 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 21:48:48,751 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 81 of 114 [2022-07-13 21:48:48,751 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-13 21:48:49,373 INFO L129 PetriNetUnfolder]: 447/1143 cut-off events. [2022-07-13 21:48:49,373 INFO L130 PetriNetUnfolder]: For 7083/7618 co-relation queries the response was YES. [2022-07-13 21:48:49,377 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. [2022-07-13 21:48:49,381 INFO L132 encePairwiseOnDemand]: 102/114 looper letters, 61 selfloop transitions, 18 changer transitions 67/217 dead transitions. [2022-07-13 21:48:49,381 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 167 places, 217 transitions, 1940 flow [2022-07-13 21:48:49,381 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-07-13 21:48:49,381 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2022-07-13 21:48:49,382 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 1322 transitions. [2022-07-13 21:48:49,383 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7730994152046784 [2022-07-13 21:48:49,383 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 1322 transitions. [2022-07-13 21:48:49,383 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 1322 transitions. [2022-07-13 21:48:49,383 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 21:48:49,383 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 1322 transitions. [2022-07-13 21:48:49,385 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) [2022-07-13 21:48:49,386 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) [2022-07-13 21:48:49,387 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) [2022-07-13 21:48:49,387 INFO L186 Difference]: Start difference. First operand has 159 places, 134 transitions, 787 flow. Second operand 15 states and 1322 transitions. [2022-07-13 21:48:49,387 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 167 places, 217 transitions, 1940 flow [2022-07-13 21:48:49,399 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 159 places, 217 transitions, 1847 flow, removed 38 selfloop flow, removed 8 redundant places. [2022-07-13 21:48:49,401 INFO L242 Difference]: Finished difference. Result has 169 places, 131 transitions, 808 flow [2022-07-13 21:48:49,401 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} [2022-07-13 21:48:49,402 INFO L279 CegarLoopForPetriNet]: 117 programPoint places, 52 predicate places. [2022-07-13 21:48:49,402 INFO L495 AbstractCegarLoop]: Abstraction has has 169 places, 131 transitions, 808 flow [2022-07-13 21:48:49,402 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) [2022-07-13 21:48:49,402 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 21:48:49,402 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] [2022-07-13 21:48:49,403 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-07-13 21:48:49,403 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, P1Err1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-07-13 21:48:49,403 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 21:48:49,403 INFO L85 PathProgramCache]: Analyzing trace with hash 388887840, now seen corresponding path program 4 times [2022-07-13 21:48:49,403 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 21:48:49,403 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [709768587] [2022-07-13 21:48:49,403 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 21:48:49,403 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 21:48:49,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:48:49,699 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 21:48:49,699 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 21:48:49,699 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [709768587] [2022-07-13 21:48:49,699 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [709768587] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 21:48:49,700 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 21:48:49,700 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2022-07-13 21:48:49,700 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1951629777] [2022-07-13 21:48:49,700 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 21:48:49,700 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-07-13 21:48:49,700 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 21:48:49,700 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-07-13 21:48:49,700 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=161, Unknown=0, NotChecked=0, Total=210 [2022-07-13 21:48:49,701 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 82 out of 114 [2022-07-13 21:48:49,702 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) [2022-07-13 21:48:49,702 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 21:48:49,702 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 82 of 114 [2022-07-13 21:48:49,702 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-13 21:48:50,257 INFO L129 PetriNetUnfolder]: 195/611 cut-off events. [2022-07-13 21:48:50,258 INFO L130 PetriNetUnfolder]: For 5404/11317 co-relation queries the response was YES. [2022-07-13 21:48:50,260 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. [2022-07-13 21:48:50,262 INFO L132 encePairwiseOnDemand]: 99/114 looper letters, 57 selfloop transitions, 29 changer transitions 1/163 dead transitions. [2022-07-13 21:48:50,263 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 176 places, 163 transitions, 1359 flow [2022-07-13 21:48:50,263 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-07-13 21:48:50,263 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2022-07-13 21:48:50,264 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 1378 transitions. [2022-07-13 21:48:50,265 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7554824561403509 [2022-07-13 21:48:50,265 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 1378 transitions. [2022-07-13 21:48:50,265 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 1378 transitions. [2022-07-13 21:48:50,265 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 21:48:50,265 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 1378 transitions. [2022-07-13 21:48:50,266 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) [2022-07-13 21:48:50,268 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) [2022-07-13 21:48:50,268 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) [2022-07-13 21:48:50,268 INFO L186 Difference]: Start difference. First operand has 169 places, 131 transitions, 808 flow. Second operand 16 states and 1378 transitions. [2022-07-13 21:48:50,268 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 176 places, 163 transitions, 1359 flow [2022-07-13 21:48:50,277 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 160 places, 163 transitions, 1211 flow, removed 47 selfloop flow, removed 16 redundant places. [2022-07-13 21:48:50,279 INFO L242 Difference]: Finished difference. Result has 165 places, 146 transitions, 997 flow [2022-07-13 21:48:50,280 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} [2022-07-13 21:48:50,280 INFO L279 CegarLoopForPetriNet]: 117 programPoint places, 48 predicate places. [2022-07-13 21:48:50,280 INFO L495 AbstractCegarLoop]: Abstraction has has 165 places, 146 transitions, 997 flow [2022-07-13 21:48:50,280 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) [2022-07-13 21:48:50,280 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 21:48:50,280 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] [2022-07-13 21:48:50,281 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-07-13 21:48:50,281 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, P1Err1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-07-13 21:48:50,281 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 21:48:50,281 INFO L85 PathProgramCache]: Analyzing trace with hash 105420936, now seen corresponding path program 1 times [2022-07-13 21:48:50,281 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 21:48:50,281 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [846970659] [2022-07-13 21:48:50,281 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 21:48:50,281 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 21:48:50,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:48:50,812 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 21:48:50,813 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 21:48:50,813 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [846970659] [2022-07-13 21:48:50,813 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [846970659] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 21:48:50,813 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 21:48:50,813 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2022-07-13 21:48:50,813 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [738088283] [2022-07-13 21:48:50,813 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 21:48:50,813 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-07-13 21:48:50,813 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 21:48:50,814 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-07-13 21:48:50,814 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=199, Unknown=0, NotChecked=0, Total=240 [2022-07-13 21:48:50,814 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 76 out of 114 [2022-07-13 21:48:50,815 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) [2022-07-13 21:48:50,815 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 21:48:50,815 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 76 of 114 [2022-07-13 21:48:50,815 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-13 21:48:52,444 INFO L129 PetriNetUnfolder]: 410/1127 cut-off events. [2022-07-13 21:48:52,444 INFO L130 PetriNetUnfolder]: For 7707/8174 co-relation queries the response was YES. [2022-07-13 21:48:52,449 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. [2022-07-13 21:48:52,452 INFO L132 encePairwiseOnDemand]: 98/114 looper letters, 73 selfloop transitions, 32 changer transitions 95/265 dead transitions. [2022-07-13 21:48:52,453 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 195 places, 265 transitions, 2620 flow [2022-07-13 21:48:52,453 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2022-07-13 21:48:52,453 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2022-07-13 21:48:52,457 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 2514 transitions. [2022-07-13 21:48:52,458 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7113752122241087 [2022-07-13 21:48:52,458 INFO L72 ComplementDD]: Start complementDD. Operand 31 states and 2514 transitions. [2022-07-13 21:48:52,458 INFO L73 IsDeterministic]: Start isDeterministic. Operand 31 states and 2514 transitions. [2022-07-13 21:48:52,459 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 21:48:52,459 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 31 states and 2514 transitions. [2022-07-13 21:48:52,464 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) [2022-07-13 21:48:52,468 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) [2022-07-13 21:48:52,468 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) [2022-07-13 21:48:52,468 INFO L186 Difference]: Start difference. First operand has 165 places, 146 transitions, 997 flow. Second operand 31 states and 2514 transitions. [2022-07-13 21:48:52,468 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 195 places, 265 transitions, 2620 flow [2022-07-13 21:48:52,483 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 190 places, 265 transitions, 2383 flow, removed 110 selfloop flow, removed 5 redundant places. [2022-07-13 21:48:52,486 INFO L242 Difference]: Finished difference. Result has 214 places, 140 transitions, 1015 flow [2022-07-13 21:48:52,487 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} [2022-07-13 21:48:52,487 INFO L279 CegarLoopForPetriNet]: 117 programPoint places, 97 predicate places. [2022-07-13 21:48:52,487 INFO L495 AbstractCegarLoop]: Abstraction has has 214 places, 140 transitions, 1015 flow [2022-07-13 21:48:52,488 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) [2022-07-13 21:48:52,488 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 21:48:52,488 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] [2022-07-13 21:48:52,488 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-07-13 21:48:52,488 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, P1Err1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-07-13 21:48:52,488 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 21:48:52,488 INFO L85 PathProgramCache]: Analyzing trace with hash -26874532, now seen corresponding path program 5 times [2022-07-13 21:48:52,489 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 21:48:52,489 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1616353878] [2022-07-13 21:48:52,489 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 21:48:52,489 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 21:48:52,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:48:52,763 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 21:48:52,763 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 21:48:52,764 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1616353878] [2022-07-13 21:48:52,765 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1616353878] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 21:48:52,765 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 21:48:52,766 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-07-13 21:48:52,766 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [632740633] [2022-07-13 21:48:52,766 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 21:48:52,766 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-07-13 21:48:52,767 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 21:48:52,767 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-07-13 21:48:52,767 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=138, Unknown=0, NotChecked=0, Total=182 [2022-07-13 21:48:52,768 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 82 out of 114 [2022-07-13 21:48:52,768 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) [2022-07-13 21:48:52,769 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 21:48:52,769 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 82 of 114 [2022-07-13 21:48:52,769 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-13 21:48:53,231 INFO L129 PetriNetUnfolder]: 135/438 cut-off events. [2022-07-13 21:48:53,231 INFO L130 PetriNetUnfolder]: For 5825/9708 co-relation queries the response was YES. [2022-07-13 21:48:53,233 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. [2022-07-13 21:48:53,235 INFO L132 encePairwiseOnDemand]: 103/114 looper letters, 47 selfloop transitions, 22 changer transitions 17/166 dead transitions. [2022-07-13 21:48:53,235 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 203 places, 166 transitions, 1670 flow [2022-07-13 21:48:53,236 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-13 21:48:53,236 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2022-07-13 21:48:53,237 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 1205 transitions. [2022-07-13 21:48:53,237 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7550125313283208 [2022-07-13 21:48:53,237 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 1205 transitions. [2022-07-13 21:48:53,237 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 1205 transitions. [2022-07-13 21:48:53,237 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 21:48:53,238 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 1205 transitions. [2022-07-13 21:48:53,239 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) [2022-07-13 21:48:53,240 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) [2022-07-13 21:48:53,240 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) [2022-07-13 21:48:53,240 INFO L186 Difference]: Start difference. First operand has 214 places, 140 transitions, 1015 flow. Second operand 14 states and 1205 transitions. [2022-07-13 21:48:53,240 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 203 places, 166 transitions, 1670 flow [2022-07-13 21:48:53,252 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 169 places, 166 transitions, 1337 flow, removed 153 selfloop flow, removed 34 redundant places. [2022-07-13 21:48:53,254 INFO L242 Difference]: Finished difference. Result has 176 places, 140 transitions, 920 flow [2022-07-13 21:48:53,254 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} [2022-07-13 21:48:53,254 INFO L279 CegarLoopForPetriNet]: 117 programPoint places, 59 predicate places. [2022-07-13 21:48:53,254 INFO L495 AbstractCegarLoop]: Abstraction has has 176 places, 140 transitions, 920 flow [2022-07-13 21:48:53,255 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) [2022-07-13 21:48:53,255 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 21:48:53,255 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] [2022-07-13 21:48:53,255 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-07-13 21:48:53,255 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, P1Err1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-07-13 21:48:53,255 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 21:48:53,255 INFO L85 PathProgramCache]: Analyzing trace with hash 1387342515, now seen corresponding path program 1 times [2022-07-13 21:48:53,255 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 21:48:53,255 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [987954010] [2022-07-13 21:48:53,255 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 21:48:53,256 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 21:48:53,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:48:53,435 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 21:48:53,435 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 21:48:53,435 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [987954010] [2022-07-13 21:48:53,435 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [987954010] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 21:48:53,435 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 21:48:53,435 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-13 21:48:53,435 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1032368772] [2022-07-13 21:48:53,435 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 21:48:53,436 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-13 21:48:53,436 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 21:48:53,436 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-13 21:48:53,436 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2022-07-13 21:48:53,437 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 82 out of 114 [2022-07-13 21:48:53,437 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) [2022-07-13 21:48:53,437 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 21:48:53,437 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 82 of 114 [2022-07-13 21:48:53,437 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-13 21:48:53,709 INFO L129 PetriNetUnfolder]: 128/433 cut-off events. [2022-07-13 21:48:53,709 INFO L130 PetriNetUnfolder]: For 3057/6865 co-relation queries the response was YES. [2022-07-13 21:48:53,711 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. [2022-07-13 21:48:53,713 INFO L132 encePairwiseOnDemand]: 104/114 looper letters, 50 selfloop transitions, 15 changer transitions 12/157 dead transitions. [2022-07-13 21:48:53,713 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 178 places, 157 transitions, 1270 flow [2022-07-13 21:48:53,715 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-13 21:48:53,715 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-07-13 21:48:53,715 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 786 transitions. [2022-07-13 21:48:53,716 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7660818713450293 [2022-07-13 21:48:53,716 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 786 transitions. [2022-07-13 21:48:53,716 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 786 transitions. [2022-07-13 21:48:53,716 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 21:48:53,716 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 786 transitions. [2022-07-13 21:48:53,717 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) [2022-07-13 21:48:53,718 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) [2022-07-13 21:48:53,719 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) [2022-07-13 21:48:53,719 INFO L186 Difference]: Start difference. First operand has 176 places, 140 transitions, 920 flow. Second operand 9 states and 786 transitions. [2022-07-13 21:48:53,719 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 178 places, 157 transitions, 1270 flow [2022-07-13 21:48:53,727 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 165 places, 157 transitions, 1212 flow, removed 12 selfloop flow, removed 13 redundant places. [2022-07-13 21:48:53,729 INFO L242 Difference]: Finished difference. Result has 170 places, 141 transitions, 930 flow [2022-07-13 21:48:53,729 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} [2022-07-13 21:48:53,729 INFO L279 CegarLoopForPetriNet]: 117 programPoint places, 53 predicate places. [2022-07-13 21:48:53,729 INFO L495 AbstractCegarLoop]: Abstraction has has 170 places, 141 transitions, 930 flow [2022-07-13 21:48:53,730 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) [2022-07-13 21:48:53,730 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 21:48:53,730 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] [2022-07-13 21:48:53,730 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-07-13 21:48:53,730 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, P1Err1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-07-13 21:48:53,731 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 21:48:53,731 INFO L85 PathProgramCache]: Analyzing trace with hash 2064396969, now seen corresponding path program 2 times [2022-07-13 21:48:53,731 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 21:48:53,731 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1784584904] [2022-07-13 21:48:53,731 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 21:48:53,731 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 21:48:53,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:48:54,025 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 21:48:54,025 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 21:48:54,025 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1784584904] [2022-07-13 21:48:54,025 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1784584904] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 21:48:54,025 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 21:48:54,025 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-07-13 21:48:54,025 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1793096504] [2022-07-13 21:48:54,026 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 21:48:54,026 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-07-13 21:48:54,026 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 21:48:54,026 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-07-13 21:48:54,026 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2022-07-13 21:48:54,027 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 81 out of 114 [2022-07-13 21:48:54,027 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) [2022-07-13 21:48:54,027 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 21:48:54,027 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 81 of 114 [2022-07-13 21:48:54,027 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-13 21:48:54,532 INFO L129 PetriNetUnfolder]: 127/429 cut-off events. [2022-07-13 21:48:54,532 INFO L130 PetriNetUnfolder]: For 3125/6825 co-relation queries the response was YES. [2022-07-13 21:48:54,534 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. [2022-07-13 21:48:54,538 INFO L132 encePairwiseOnDemand]: 98/114 looper letters, 35 selfloop transitions, 31 changer transitions 14/159 dead transitions. [2022-07-13 21:48:54,538 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 178 places, 159 transitions, 1304 flow [2022-07-13 21:48:54,540 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-07-13 21:48:54,540 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2022-07-13 21:48:54,540 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1106 transitions. [2022-07-13 21:48:54,541 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7462887989203779 [2022-07-13 21:48:54,541 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 1106 transitions. [2022-07-13 21:48:54,541 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 1106 transitions. [2022-07-13 21:48:54,541 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 21:48:54,542 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 1106 transitions. [2022-07-13 21:48:54,543 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) [2022-07-13 21:48:54,544 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) [2022-07-13 21:48:54,545 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) [2022-07-13 21:48:54,545 INFO L186 Difference]: Start difference. First operand has 170 places, 141 transitions, 930 flow. Second operand 13 states and 1106 transitions. [2022-07-13 21:48:54,545 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 178 places, 159 transitions, 1304 flow [2022-07-13 21:48:54,553 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 171 places, 159 transitions, 1262 flow, removed 8 selfloop flow, removed 7 redundant places. [2022-07-13 21:48:54,555 INFO L242 Difference]: Finished difference. Result has 175 places, 139 transitions, 940 flow [2022-07-13 21:48:54,555 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} [2022-07-13 21:48:54,555 INFO L279 CegarLoopForPetriNet]: 117 programPoint places, 58 predicate places. [2022-07-13 21:48:54,556 INFO L495 AbstractCegarLoop]: Abstraction has has 175 places, 139 transitions, 940 flow [2022-07-13 21:48:54,556 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) [2022-07-13 21:48:54,556 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 21:48:54,556 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] [2022-07-13 21:48:54,556 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-07-13 21:48:54,556 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, P1Err1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-07-13 21:48:54,557 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 21:48:54,557 INFO L85 PathProgramCache]: Analyzing trace with hash -850323535, now seen corresponding path program 3 times [2022-07-13 21:48:54,557 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 21:48:54,557 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [911894181] [2022-07-13 21:48:54,557 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 21:48:54,557 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 21:48:54,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:48:54,817 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 21:48:54,817 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 21:48:54,817 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [911894181] [2022-07-13 21:48:54,817 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [911894181] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 21:48:54,817 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 21:48:54,817 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-07-13 21:48:54,818 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [918754009] [2022-07-13 21:48:54,818 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 21:48:54,818 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-07-13 21:48:54,818 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 21:48:54,818 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-07-13 21:48:54,818 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=145, Unknown=0, NotChecked=0, Total=182 [2022-07-13 21:48:54,819 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 78 out of 114 [2022-07-13 21:48:54,820 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) [2022-07-13 21:48:54,820 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 21:48:54,820 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 78 of 114 [2022-07-13 21:48:54,820 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-13 21:48:55,323 INFO L129 PetriNetUnfolder]: 267/790 cut-off events. [2022-07-13 21:48:55,323 INFO L130 PetriNetUnfolder]: For 5674/6116 co-relation queries the response was YES. [2022-07-13 21:48:55,326 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. [2022-07-13 21:48:55,334 INFO L132 encePairwiseOnDemand]: 99/114 looper letters, 71 selfloop transitions, 21 changer transitions 43/202 dead transitions. [2022-07-13 21:48:55,334 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 187 places, 202 transitions, 1876 flow [2022-07-13 21:48:55,334 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-07-13 21:48:55,334 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2022-07-13 21:48:55,336 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 1428 transitions. [2022-07-13 21:48:55,337 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7368421052631579 [2022-07-13 21:48:55,338 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 1428 transitions. [2022-07-13 21:48:55,338 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 1428 transitions. [2022-07-13 21:48:55,338 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 21:48:55,338 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 1428 transitions. [2022-07-13 21:48:55,340 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) [2022-07-13 21:48:55,342 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) [2022-07-13 21:48:55,342 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) [2022-07-13 21:48:55,343 INFO L186 Difference]: Start difference. First operand has 175 places, 139 transitions, 940 flow. Second operand 17 states and 1428 transitions. [2022-07-13 21:48:55,343 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 187 places, 202 transitions, 1876 flow [2022-07-13 21:48:55,355 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 177 places, 202 transitions, 1791 flow, removed 25 selfloop flow, removed 10 redundant places. [2022-07-13 21:48:55,357 INFO L242 Difference]: Finished difference. Result has 186 places, 137 transitions, 913 flow [2022-07-13 21:48:55,358 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} [2022-07-13 21:48:55,358 INFO L279 CegarLoopForPetriNet]: 117 programPoint places, 69 predicate places. [2022-07-13 21:48:55,358 INFO L495 AbstractCegarLoop]: Abstraction has has 186 places, 137 transitions, 913 flow [2022-07-13 21:48:55,358 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) [2022-07-13 21:48:55,359 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 21:48:55,359 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] [2022-07-13 21:48:55,359 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-07-13 21:48:55,359 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, P1Err1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-07-13 21:48:55,359 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 21:48:55,359 INFO L85 PathProgramCache]: Analyzing trace with hash -957608077, now seen corresponding path program 4 times [2022-07-13 21:48:55,359 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 21:48:55,360 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1186370495] [2022-07-13 21:48:55,360 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 21:48:55,360 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 21:48:55,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:48:55,526 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 21:48:55,526 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 21:48:55,527 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1186370495] [2022-07-13 21:48:55,527 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1186370495] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 21:48:55,527 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 21:48:55,527 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-07-13 21:48:55,527 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1892148008] [2022-07-13 21:48:55,527 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 21:48:55,528 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-07-13 21:48:55,528 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 21:48:55,528 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-07-13 21:48:55,529 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2022-07-13 21:48:55,529 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 85 out of 114 [2022-07-13 21:48:55,530 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) [2022-07-13 21:48:55,530 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 21:48:55,530 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 85 of 114 [2022-07-13 21:48:55,531 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-13 21:48:55,812 INFO L129 PetriNetUnfolder]: 106/352 cut-off events. [2022-07-13 21:48:55,812 INFO L130 PetriNetUnfolder]: For 2648/6023 co-relation queries the response was YES. [2022-07-13 21:48:55,813 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. [2022-07-13 21:48:55,814 INFO L132 encePairwiseOnDemand]: 106/114 looper letters, 0 selfloop transitions, 0 changer transitions 140/140 dead transitions. [2022-07-13 21:48:55,814 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 183 places, 140 transitions, 1099 flow [2022-07-13 21:48:55,814 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-13 21:48:55,815 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-07-13 21:48:55,818 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 796 transitions. [2022-07-13 21:48:55,820 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7758284600389863 [2022-07-13 21:48:55,820 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 796 transitions. [2022-07-13 21:48:55,820 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 796 transitions. [2022-07-13 21:48:55,821 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 21:48:55,821 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 796 transitions. [2022-07-13 21:48:55,825 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) [2022-07-13 21:48:55,826 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) [2022-07-13 21:48:55,826 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) [2022-07-13 21:48:55,826 INFO L186 Difference]: Start difference. First operand has 186 places, 137 transitions, 913 flow. Second operand 9 states and 796 transitions. [2022-07-13 21:48:55,826 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 183 places, 140 transitions, 1099 flow [2022-07-13 21:48:55,833 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 169 places, 140 transitions, 1043 flow, removed 16 selfloop flow, removed 14 redundant places. [2022-07-13 21:48:55,834 INFO L242 Difference]: Finished difference. Result has 169 places, 0 transitions, 0 flow [2022-07-13 21:48:55,834 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} [2022-07-13 21:48:55,835 INFO L279 CegarLoopForPetriNet]: 117 programPoint places, 52 predicate places. [2022-07-13 21:48:55,835 INFO L495 AbstractCegarLoop]: Abstraction has has 169 places, 0 transitions, 0 flow [2022-07-13 21:48:55,835 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) [2022-07-13 21:48:55,837 INFO L805 garLoopResultBuilder]: Registering result SAFE for location P1Err0ASSERT_VIOLATIONERROR_FUNCTION (6 of 7 remaining) [2022-07-13 21:48:55,837 INFO L805 garLoopResultBuilder]: Registering result SAFE for location P1Err1ASSERT_VIOLATIONERROR_FUNCTION (5 of 7 remaining) [2022-07-13 21:48:55,837 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (4 of 7 remaining) [2022-07-13 21:48:55,838 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (3 of 7 remaining) [2022-07-13 21:48:55,838 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 7 remaining) [2022-07-13 21:48:55,838 INFO L805 garLoopResultBuilder]: Registering result SAFE for location P1Err0ASSERT_VIOLATIONERROR_FUNCTION (1 of 7 remaining) [2022-07-13 21:48:55,838 INFO L805 garLoopResultBuilder]: Registering result SAFE for location P1Err1ASSERT_VIOLATIONERROR_FUNCTION (0 of 7 remaining) [2022-07-13 21:48:55,838 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-07-13 21:48:55,838 INFO L356 BasicCegarLoop]: Path program histogram: [5, 5, 4, 1, 1, 1, 1, 1, 1] [2022-07-13 21:48:55,843 INFO L226 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-07-13 21:48:55,843 INFO L176 ceAbstractionStarter]: Computing trace abstraction results [2022-07-13 21:48:55,848 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.07 09:48:55 BasicIcfg [2022-07-13 21:48:55,848 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-07-13 21:48:55,848 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-07-13 21:48:55,849 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-07-13 21:48:55,849 INFO L275 PluginConnector]: Witness Printer initialized [2022-07-13 21:48:55,849 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.07 09:48:39" (3/4) ... [2022-07-13 21:48:55,851 INFO L137 WitnessPrinter]: Generating witness for correct program [2022-07-13 21:48:55,854 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P0 [2022-07-13 21:48:55,855 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P1 [2022-07-13 21:48:55,866 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 139 nodes and edges [2022-07-13 21:48:55,866 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 30 nodes and edges [2022-07-13 21:48:55,867 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 7 nodes and edges [2022-07-13 21:48:55,867 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2022-07-13 21:48:55,922 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2022-07-13 21:48:55,922 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-07-13 21:48:55,923 INFO L158 Benchmark]: Toolchain (without parser) took 17932.58ms. Allocated memory was 83.9MB in the beginning and 446.7MB in the end (delta: 362.8MB). Free memory was 51.0MB in the beginning and 341.4MB in the end (delta: -290.4MB). Peak memory consumption was 71.8MB. Max. memory is 16.1GB. [2022-07-13 21:48:55,923 INFO L158 Benchmark]: CDTParser took 0.20ms. Allocated memory is still 83.9MB. Free memory was 53.7MB in the beginning and 53.7MB in the end (delta: 26.6kB). There was no memory consumed. Max. memory is 16.1GB. [2022-07-13 21:48:55,923 INFO L158 Benchmark]: CACSL2BoogieTranslator took 390.73ms. Allocated memory was 83.9MB in the beginning and 100.7MB in the end (delta: 16.8MB). Free memory was 50.7MB in the beginning and 58.8MB in the end (delta: -8.1MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-07-13 21:48:55,924 INFO L158 Benchmark]: Boogie Procedure Inliner took 53.44ms. Allocated memory is still 100.7MB. Free memory was 58.3MB in the beginning and 54.1MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2022-07-13 21:48:55,924 INFO L158 Benchmark]: Boogie Preprocessor took 57.21ms. Allocated memory is still 100.7MB. Free memory was 54.1MB in the beginning and 50.9MB in the end (delta: 3.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2022-07-13 21:48:55,924 INFO L158 Benchmark]: RCFGBuilder took 1244.19ms. Allocated memory was 100.7MB in the beginning and 136.3MB in the end (delta: 35.7MB). Free memory was 50.9MB in the beginning and 75.2MB in the end (delta: -24.3MB). Peak memory consumption was 44.3MB. Max. memory is 16.1GB. [2022-07-13 21:48:55,924 INFO L158 Benchmark]: TraceAbstraction took 16108.38ms. Allocated memory was 136.3MB in the beginning and 446.7MB in the end (delta: 310.4MB). Free memory was 75.2MB in the beginning and 346.6MB in the end (delta: -271.4MB). Peak memory consumption was 38.0MB. Max. memory is 16.1GB. [2022-07-13 21:48:55,924 INFO L158 Benchmark]: Witness Printer took 73.80ms. Allocated memory is still 446.7MB. Free memory was 346.6MB in the beginning and 341.4MB in the end (delta: 5.2MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2022-07-13 21:48:55,926 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20ms. Allocated memory is still 83.9MB. Free memory was 53.7MB in the beginning and 53.7MB in the end (delta: 26.6kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 390.73ms. Allocated memory was 83.9MB in the beginning and 100.7MB in the end (delta: 16.8MB). Free memory was 50.7MB in the beginning and 58.8MB in the end (delta: -8.1MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 53.44ms. Allocated memory is still 100.7MB. Free memory was 58.3MB in the beginning and 54.1MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Boogie Preprocessor took 57.21ms. Allocated memory is still 100.7MB. Free memory was 54.1MB in the beginning and 50.9MB in the end (delta: 3.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * RCFGBuilder took 1244.19ms. Allocated memory was 100.7MB in the beginning and 136.3MB in the end (delta: 35.7MB). Free memory was 50.9MB in the beginning and 75.2MB in the end (delta: -24.3MB). Peak memory consumption was 44.3MB. Max. memory is 16.1GB. * TraceAbstraction took 16108.38ms. Allocated memory was 136.3MB in the beginning and 446.7MB in the end (delta: 310.4MB). Free memory was 75.2MB in the beginning and 346.6MB in the end (delta: -271.4MB). Peak memory consumption was 38.0MB. Max. memory is 16.1GB. * Witness Printer took 73.80ms. Allocated memory is still 446.7MB. Free memory was 346.6MB in the beginning and 341.4MB in the end (delta: 5.2MB). 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: 16.0s, OverallIterations: 20, TraceHistogramMax: 1, PathProgramHistogramMax: 5, EmptinessCheckTime: 0.0s, AutomataDifference: 10.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 1053 SdHoareTripleChecker+Valid, 4.7s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 1053 mSDsluCounter, 1305 SdHoareTripleChecker+Invalid, 3.9s 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, 4.1s 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, 1.0s SatisfiabilityAnalysisTime, 3.7s 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! [2022-07-13 21:48:55,978 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE