./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/weaver/parallel-ticket-3.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version ff03de63 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/weaver/parallel-ticket-3.wvr.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash c947ca303cec71cbb6edeb9f866ed53067014e89778e5c242eb251405d7ab484 --- Real Ultimate output --- This is Ultimate 0.2.2-dev-ff03de6 [2021-12-21 15:19:01,311 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-21 15:19:01,313 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-21 15:19:01,336 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-21 15:19:01,336 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-21 15:19:01,337 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-21 15:19:01,338 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-21 15:19:01,339 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-21 15:19:01,340 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-21 15:19:01,341 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-21 15:19:01,342 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-21 15:19:01,342 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-21 15:19:01,343 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-21 15:19:01,343 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-21 15:19:01,344 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-21 15:19:01,345 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-21 15:19:01,345 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-21 15:19:01,346 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-21 15:19:01,347 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-21 15:19:01,348 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-21 15:19:01,349 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-21 15:19:01,350 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-21 15:19:01,351 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-21 15:19:01,352 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-21 15:19:01,354 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-21 15:19:01,354 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-21 15:19:01,354 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-21 15:19:01,355 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-21 15:19:01,355 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-21 15:19:01,356 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-21 15:19:01,356 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-21 15:19:01,357 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-21 15:19:01,357 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-21 15:19:01,358 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-21 15:19:01,359 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-21 15:19:01,359 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-21 15:19:01,360 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-21 15:19:01,360 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-21 15:19:01,360 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-21 15:19:01,361 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-21 15:19:01,361 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-21 15:19:01,362 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-12-21 15:19:01,375 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-21 15:19:01,375 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-21 15:19:01,376 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-21 15:19:01,376 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-21 15:19:01,376 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-21 15:19:01,377 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-21 15:19:01,377 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-21 15:19:01,377 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-21 15:19:01,377 INFO L138 SettingsManager]: * Use SBE=true [2021-12-21 15:19:01,377 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-21 15:19:01,378 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-21 15:19:01,378 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-21 15:19:01,378 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-21 15:19:01,378 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-21 15:19:01,378 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-21 15:19:01,378 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-21 15:19:01,379 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-21 15:19:01,379 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-21 15:19:01,379 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-21 15:19:01,379 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-21 15:19:01,379 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-21 15:19:01,379 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-21 15:19:01,380 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-21 15:19:01,380 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-21 15:19:01,380 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-21 15:19:01,380 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-21 15:19:01,380 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-21 15:19:01,380 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-21 15:19:01,381 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-21 15:19:01,381 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-21 15:19:01,381 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-21 15:19:01,381 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-21 15:19:01,381 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-21 15:19:01,381 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-21 15:19:01,382 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c947ca303cec71cbb6edeb9f866ed53067014e89778e5c242eb251405d7ab484 [2021-12-21 15:19:01,537 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-21 15:19:01,551 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-21 15:19:01,553 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-21 15:19:01,554 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-21 15:19:01,554 INFO L275 PluginConnector]: CDTParser initialized [2021-12-21 15:19:01,555 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/parallel-ticket-3.wvr.c [2021-12-21 15:19:01,609 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4a26bb9e6/59a392bf8ec94143a608082a6e0324ec/FLAG465742e75 [2021-12-21 15:19:02,068 INFO L306 CDTParser]: Found 1 translation units. [2021-12-21 15:19:02,068 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/parallel-ticket-3.wvr.c [2021-12-21 15:19:02,076 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4a26bb9e6/59a392bf8ec94143a608082a6e0324ec/FLAG465742e75 [2021-12-21 15:19:02,441 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4a26bb9e6/59a392bf8ec94143a608082a6e0324ec [2021-12-21 15:19:02,443 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-21 15:19:02,448 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-21 15:19:02,452 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-21 15:19:02,458 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-21 15:19:02,461 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-21 15:19:02,461 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.12 03:19:02" (1/1) ... [2021-12-21 15:19:02,462 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@59b092d6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 03:19:02, skipping insertion in model container [2021-12-21 15:19:02,462 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.12 03:19:02" (1/1) ... [2021-12-21 15:19:02,466 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-21 15:19:02,500 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-21 15:19:02,712 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/parallel-ticket-3.wvr.c[3089,3102] [2021-12-21 15:19:02,734 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-21 15:19:02,739 INFO L203 MainTranslator]: Completed pre-run [2021-12-21 15:19:02,782 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/parallel-ticket-3.wvr.c[3089,3102] [2021-12-21 15:19:02,785 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-21 15:19:02,800 INFO L208 MainTranslator]: Completed translation [2021-12-21 15:19:02,806 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 03:19:02 WrapperNode [2021-12-21 15:19:02,816 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-21 15:19:02,817 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-21 15:19:02,817 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-21 15:19:02,817 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-21 15:19:02,822 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 03:19:02" (1/1) ... [2021-12-21 15:19:02,828 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 03:19:02" (1/1) ... [2021-12-21 15:19:02,842 INFO L137 Inliner]: procedures = 22, calls = 55, calls flagged for inlining = 7, calls inlined = 7, statements flattened = 158 [2021-12-21 15:19:02,843 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-21 15:19:02,843 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-21 15:19:02,843 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-21 15:19:02,844 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-21 15:19:02,849 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 03:19:02" (1/1) ... [2021-12-21 15:19:02,850 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 03:19:02" (1/1) ... [2021-12-21 15:19:02,852 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 03:19:02" (1/1) ... [2021-12-21 15:19:02,852 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 03:19:02" (1/1) ... [2021-12-21 15:19:02,856 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 03:19:02" (1/1) ... [2021-12-21 15:19:02,860 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 03:19:02" (1/1) ... [2021-12-21 15:19:02,861 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 03:19:02" (1/1) ... [2021-12-21 15:19:02,863 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-21 15:19:02,863 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-21 15:19:02,864 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-21 15:19:02,864 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-21 15:19:02,880 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 03:19:02" (1/1) ... [2021-12-21 15:19:02,896 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-21 15:19:02,904 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 15:19:02,919 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) [2021-12-21 15:19:02,927 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 [2021-12-21 15:19:02,945 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-21 15:19:02,945 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2021-12-21 15:19:02,946 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2021-12-21 15:19:02,946 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2021-12-21 15:19:02,946 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2021-12-21 15:19:02,946 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2021-12-21 15:19:02,946 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2021-12-21 15:19:02,946 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-21 15:19:02,946 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-12-21 15:19:02,947 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-12-21 15:19:02,947 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-12-21 15:19:02,947 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-12-21 15:19:02,947 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-21 15:19:02,947 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-21 15:19:02,947 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-12-21 15:19:02,947 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-12-21 15:19:02,948 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-12-21 15:19:03,000 INFO L234 CfgBuilder]: Building ICFG [2021-12-21 15:19:03,001 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-21 15:19:03,145 INFO L275 CfgBuilder]: Performing block encoding [2021-12-21 15:19:03,197 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-21 15:19:03,198 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-12-21 15:19:03,199 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.12 03:19:03 BoogieIcfgContainer [2021-12-21 15:19:03,200 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-21 15:19:03,201 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-21 15:19:03,201 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-21 15:19:03,203 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-21 15:19:03,203 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.12 03:19:02" (1/3) ... [2021-12-21 15:19:03,204 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@74bd927f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.12 03:19:03, skipping insertion in model container [2021-12-21 15:19:03,204 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 03:19:02" (2/3) ... [2021-12-21 15:19:03,204 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@74bd927f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.12 03:19:03, skipping insertion in model container [2021-12-21 15:19:03,204 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.12 03:19:03" (3/3) ... [2021-12-21 15:19:03,205 INFO L111 eAbstractionObserver]: Analyzing ICFG parallel-ticket-3.wvr.c [2021-12-21 15:19:03,209 WARN L149 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-12-21 15:19:03,209 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-21 15:19:03,209 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-21 15:19:03,209 INFO L513 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-12-21 15:19:03,244 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~post1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:19:03,244 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~post1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:19:03,245 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:19:03,245 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:19:03,245 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:19:03,245 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:19:03,246 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~post2#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:19:03,246 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~post2#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:19:03,246 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:19:03,247 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:19:03,248 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:19:03,248 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:19:03,248 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:19:03,249 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:19:03,249 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:19:03,249 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:19:03,250 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:19:03,250 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:19:03,251 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:19:03,251 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:19:03,251 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:19:03,251 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:19:03,252 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:19:03,252 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:19:03,252 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~post5#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:19:03,252 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~post5#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:19:03,253 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:19:03,253 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:19:03,253 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:19:03,253 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:19:03,254 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~post6#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:19:03,255 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~post6#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:19:03,255 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:19:03,255 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:19:03,255 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:19:03,255 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:19:03,258 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:19:03,258 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:19:03,258 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:19:03,259 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:19:03,259 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:19:03,259 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:19:03,260 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:19:03,260 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:19:03,260 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:19:03,261 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:19:03,261 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~post6#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:19:03,261 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~post5#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:19:03,262 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~post1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:19:03,262 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~post2#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:19:03,262 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:19:03,262 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:19:03,262 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:19:03,263 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:19:03,268 INFO L148 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2021-12-21 15:19:03,318 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-21 15:19:03,323 INFO L339 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, mLoopAccelerationTechnique=FAST_UPR [2021-12-21 15:19:03,323 INFO L340 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2021-12-21 15:19:03,333 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 127 places, 119 transitions, 262 flow [2021-12-21 15:19:03,379 INFO L129 PetriNetUnfolder]: 2/116 cut-off events. [2021-12-21 15:19:03,379 INFO L130 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2021-12-21 15:19:03,381 INFO L84 FinitePrefix]: Finished finitePrefix Result has 129 conditions, 116 events. 2/116 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 39 event pairs, 0 based on Foata normal form. 0/113 useless extension candidates. Maximal degree in co-relation 82. Up to 2 conditions per place. [2021-12-21 15:19:03,381 INFO L82 GeneralOperation]: Start removeDead. Operand has 127 places, 119 transitions, 262 flow [2021-12-21 15:19:03,387 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 113 places, 105 transitions, 228 flow [2021-12-21 15:19:03,415 INFO L129 PetriNetUnfolder]: 2/104 cut-off events. [2021-12-21 15:19:03,416 INFO L130 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2021-12-21 15:19:03,416 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-21 15:19:03,417 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 15:19:03,417 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-12-21 15:19:03,421 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 15:19:03,421 INFO L85 PathProgramCache]: Analyzing trace with hash -38046997, now seen corresponding path program 1 times [2021-12-21 15:19:03,427 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 15:19:03,428 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [325129737] [2021-12-21 15:19:03,428 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 15:19:03,429 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 15:19:03,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:19:04,123 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 15:19:04,124 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 15:19:04,125 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [325129737] [2021-12-21 15:19:04,127 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [325129737] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 15:19:04,128 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 15:19:04,128 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-12-21 15:19:04,130 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [896467081] [2021-12-21 15:19:04,131 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 15:19:04,138 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-12-21 15:19:04,138 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 15:19:04,162 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-12-21 15:19:04,164 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2021-12-21 15:19:04,173 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 77 out of 119 [2021-12-21 15:19:04,178 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 113 places, 105 transitions, 228 flow. Second operand has 12 states, 12 states have (on average 80.08333333333333) internal successors, (961), 12 states have internal predecessors, (961), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 15:19:04,178 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-21 15:19:04,178 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 77 of 119 [2021-12-21 15:19:04,179 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-21 15:19:04,741 INFO L129 PetriNetUnfolder]: 439/1079 cut-off events. [2021-12-21 15:19:04,741 INFO L130 PetriNetUnfolder]: For 232/232 co-relation queries the response was YES. [2021-12-21 15:19:04,750 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2029 conditions, 1079 events. 439/1079 cut-off events. For 232/232 co-relation queries the response was YES. Maximal size of possible extension queue 60. Compared 5930 event pairs, 214 based on Foata normal form. 4/1047 useless extension candidates. Maximal degree in co-relation 1512. Up to 317 conditions per place. [2021-12-21 15:19:04,762 INFO L132 encePairwiseOnDemand]: 99/119 looper letters, 62 selfloop transitions, 19 changer transitions 26/171 dead transitions. [2021-12-21 15:19:04,762 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 128 places, 171 transitions, 610 flow [2021-12-21 15:19:04,765 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-12-21 15:19:04,767 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2021-12-21 15:19:04,776 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 1345 transitions. [2021-12-21 15:19:04,779 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7064075630252101 [2021-12-21 15:19:04,780 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 1345 transitions. [2021-12-21 15:19:04,780 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 1345 transitions. [2021-12-21 15:19:04,783 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-21 15:19:04,785 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 1345 transitions. [2021-12-21 15:19:04,791 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 84.0625) internal successors, (1345), 16 states have internal predecessors, (1345), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 15:19:04,799 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 119.0) internal successors, (2023), 17 states have internal predecessors, (2023), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 15:19:04,800 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 119.0) internal successors, (2023), 17 states have internal predecessors, (2023), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 15:19:04,801 INFO L186 Difference]: Start difference. First operand has 113 places, 105 transitions, 228 flow. Second operand 16 states and 1345 transitions. [2021-12-21 15:19:04,802 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 128 places, 171 transitions, 610 flow [2021-12-21 15:19:04,806 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 122 places, 171 transitions, 574 flow, removed 0 selfloop flow, removed 6 redundant places. [2021-12-21 15:19:04,809 INFO L242 Difference]: Finished difference. Result has 131 places, 114 transitions, 322 flow [2021-12-21 15:19:04,811 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=119, PETRI_DIFFERENCE_MINUEND_FLOW=212, PETRI_DIFFERENCE_MINUEND_PLACES=107, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=103, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=91, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=322, PETRI_PLACES=131, PETRI_TRANSITIONS=114} [2021-12-21 15:19:04,813 INFO L334 CegarLoopForPetriNet]: 113 programPoint places, 18 predicate places. [2021-12-21 15:19:04,813 INFO L470 AbstractCegarLoop]: Abstraction has has 131 places, 114 transitions, 322 flow [2021-12-21 15:19:04,814 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 80.08333333333333) internal successors, (961), 12 states have internal predecessors, (961), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 15:19:04,814 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-21 15:19:04,814 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 15:19:04,815 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-21 15:19:04,815 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-12-21 15:19:04,815 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 15:19:04,816 INFO L85 PathProgramCache]: Analyzing trace with hash -1859360431, now seen corresponding path program 2 times [2021-12-21 15:19:04,816 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 15:19:04,816 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1672632839] [2021-12-21 15:19:04,816 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 15:19:04,816 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 15:19:04,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:19:05,043 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 15:19:05,043 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 15:19:05,044 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1672632839] [2021-12-21 15:19:05,044 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1672632839] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 15:19:05,044 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 15:19:05,044 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-12-21 15:19:05,044 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [121367945] [2021-12-21 15:19:05,045 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 15:19:05,046 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-12-21 15:19:05,046 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 15:19:05,047 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-12-21 15:19:05,047 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2021-12-21 15:19:05,049 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 83 out of 119 [2021-12-21 15:19:05,049 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 131 places, 114 transitions, 322 flow. Second operand has 10 states, 10 states have (on average 86.1) internal successors, (861), 10 states have internal predecessors, (861), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 15:19:05,050 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-21 15:19:05,050 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 83 of 119 [2021-12-21 15:19:05,050 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-21 15:19:05,329 INFO L129 PetriNetUnfolder]: 380/990 cut-off events. [2021-12-21 15:19:05,330 INFO L130 PetriNetUnfolder]: For 447/447 co-relation queries the response was YES. [2021-12-21 15:19:05,332 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2185 conditions, 990 events. 380/990 cut-off events. For 447/447 co-relation queries the response was YES. Maximal size of possible extension queue 57. Compared 5647 event pairs, 109 based on Foata normal form. 1/961 useless extension candidates. Maximal degree in co-relation 2167. Up to 326 conditions per place. [2021-12-21 15:19:05,335 INFO L132 encePairwiseOnDemand]: 108/119 looper letters, 43 selfloop transitions, 10 changer transitions 27/150 dead transitions. [2021-12-21 15:19:05,335 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 132 places, 150 transitions, 610 flow [2021-12-21 15:19:05,335 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-12-21 15:19:05,335 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2021-12-21 15:19:05,337 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 899 transitions. [2021-12-21 15:19:05,337 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7554621848739496 [2021-12-21 15:19:05,337 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 899 transitions. [2021-12-21 15:19:05,337 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 899 transitions. [2021-12-21 15:19:05,338 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-21 15:19:05,338 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 899 transitions. [2021-12-21 15:19:05,340 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 89.9) internal successors, (899), 10 states have internal predecessors, (899), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 15:19:05,341 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 119.0) internal successors, (1309), 11 states have internal predecessors, (1309), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 15:19:05,342 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 119.0) internal successors, (1309), 11 states have internal predecessors, (1309), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 15:19:05,342 INFO L186 Difference]: Start difference. First operand has 131 places, 114 transitions, 322 flow. Second operand 10 states and 899 transitions. [2021-12-21 15:19:05,342 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 132 places, 150 transitions, 610 flow [2021-12-21 15:19:05,344 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 125 places, 150 transitions, 582 flow, removed 10 selfloop flow, removed 7 redundant places. [2021-12-21 15:19:05,346 INFO L242 Difference]: Finished difference. Result has 130 places, 116 transitions, 352 flow [2021-12-21 15:19:05,346 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=119, PETRI_DIFFERENCE_MINUEND_FLOW=302, PETRI_DIFFERENCE_MINUEND_PLACES=116, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=114, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=104, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=352, PETRI_PLACES=130, PETRI_TRANSITIONS=116} [2021-12-21 15:19:05,347 INFO L334 CegarLoopForPetriNet]: 113 programPoint places, 17 predicate places. [2021-12-21 15:19:05,347 INFO L470 AbstractCegarLoop]: Abstraction has has 130 places, 116 transitions, 352 flow [2021-12-21 15:19:05,347 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 86.1) internal successors, (861), 10 states have internal predecessors, (861), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 15:19:05,348 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-21 15:19:05,348 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 15:19:05,348 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-21 15:19:05,348 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-12-21 15:19:05,348 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 15:19:05,349 INFO L85 PathProgramCache]: Analyzing trace with hash -200941397, now seen corresponding path program 3 times [2021-12-21 15:19:05,349 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 15:19:05,349 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [321146707] [2021-12-21 15:19:05,349 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 15:19:05,349 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 15:19:05,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:19:05,421 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 15:19:05,421 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 15:19:05,422 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [321146707] [2021-12-21 15:19:05,422 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [321146707] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 15:19:05,422 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 15:19:05,422 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-21 15:19:05,422 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [100529456] [2021-12-21 15:19:05,422 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 15:19:05,423 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-21 15:19:05,423 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 15:19:05,423 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-21 15:19:05,423 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-12-21 15:19:05,424 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 85 out of 119 [2021-12-21 15:19:05,425 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 130 places, 116 transitions, 352 flow. Second operand has 8 states, 8 states have (on average 88.625) internal successors, (709), 8 states have internal predecessors, (709), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 15:19:05,425 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-21 15:19:05,425 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 85 of 119 [2021-12-21 15:19:05,425 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-21 15:19:05,563 INFO L129 PetriNetUnfolder]: 196/640 cut-off events. [2021-12-21 15:19:05,563 INFO L130 PetriNetUnfolder]: For 325/332 co-relation queries the response was YES. [2021-12-21 15:19:05,565 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1435 conditions, 640 events. 196/640 cut-off events. For 325/332 co-relation queries the response was YES. Maximal size of possible extension queue 43. Compared 3346 event pairs, 30 based on Foata normal form. 13/629 useless extension candidates. Maximal degree in co-relation 1412. Up to 133 conditions per place. [2021-12-21 15:19:05,567 INFO L132 encePairwiseOnDemand]: 109/119 looper letters, 45 selfloop transitions, 24 changer transitions 0/151 dead transitions. [2021-12-21 15:19:05,568 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 133 places, 151 transitions, 598 flow [2021-12-21 15:19:05,568 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-12-21 15:19:05,568 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-12-21 15:19:05,570 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 744 transitions. [2021-12-21 15:19:05,570 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7815126050420168 [2021-12-21 15:19:05,570 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 744 transitions. [2021-12-21 15:19:05,570 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 744 transitions. [2021-12-21 15:19:05,571 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-21 15:19:05,571 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 744 transitions. [2021-12-21 15:19:05,572 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 93.0) internal successors, (744), 8 states have internal predecessors, (744), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 15:19:05,574 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 119.0) internal successors, (1071), 9 states have internal predecessors, (1071), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 15:19:05,574 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 119.0) internal successors, (1071), 9 states have internal predecessors, (1071), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 15:19:05,574 INFO L186 Difference]: Start difference. First operand has 130 places, 116 transitions, 352 flow. Second operand 8 states and 744 transitions. [2021-12-21 15:19:05,574 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 133 places, 151 transitions, 598 flow [2021-12-21 15:19:05,577 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 125 places, 151 transitions, 568 flow, removed 8 selfloop flow, removed 8 redundant places. [2021-12-21 15:19:05,579 INFO L242 Difference]: Finished difference. Result has 126 places, 130 transitions, 429 flow [2021-12-21 15:19:05,579 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=119, PETRI_DIFFERENCE_MINUEND_FLOW=328, PETRI_DIFFERENCE_MINUEND_PLACES=118, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=116, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=104, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=429, PETRI_PLACES=126, PETRI_TRANSITIONS=130} [2021-12-21 15:19:05,580 INFO L334 CegarLoopForPetriNet]: 113 programPoint places, 13 predicate places. [2021-12-21 15:19:05,580 INFO L470 AbstractCegarLoop]: Abstraction has has 126 places, 130 transitions, 429 flow [2021-12-21 15:19:05,581 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 88.625) internal successors, (709), 8 states have internal predecessors, (709), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 15:19:05,581 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-21 15:19:05,581 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 15:19:05,581 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-12-21 15:19:05,581 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-12-21 15:19:05,582 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 15:19:05,582 INFO L85 PathProgramCache]: Analyzing trace with hash 2098425681, now seen corresponding path program 4 times [2021-12-21 15:19:05,582 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 15:19:05,582 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [142097037] [2021-12-21 15:19:05,582 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 15:19:05,583 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 15:19:05,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:19:05,666 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 15:19:05,667 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 15:19:05,667 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [142097037] [2021-12-21 15:19:05,667 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [142097037] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 15:19:05,667 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 15:19:05,667 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-21 15:19:05,668 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [423889080] [2021-12-21 15:19:05,668 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 15:19:05,668 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-21 15:19:05,668 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 15:19:05,669 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-21 15:19:05,669 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2021-12-21 15:19:05,670 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 85 out of 119 [2021-12-21 15:19:05,670 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 126 places, 130 transitions, 429 flow. Second operand has 7 states, 7 states have (on average 89.14285714285714) internal successors, (624), 7 states have internal predecessors, (624), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 15:19:05,671 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-21 15:19:05,671 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 85 of 119 [2021-12-21 15:19:05,671 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-21 15:19:05,803 INFO L129 PetriNetUnfolder]: 179/701 cut-off events. [2021-12-21 15:19:05,803 INFO L130 PetriNetUnfolder]: For 571/596 co-relation queries the response was YES. [2021-12-21 15:19:05,805 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1645 conditions, 701 events. 179/701 cut-off events. For 571/596 co-relation queries the response was YES. Maximal size of possible extension queue 48. Compared 4132 event pairs, 46 based on Foata normal form. 36/710 useless extension candidates. Maximal degree in co-relation 872. Up to 125 conditions per place. [2021-12-21 15:19:05,808 INFO L132 encePairwiseOnDemand]: 109/119 looper letters, 48 selfloop transitions, 26 changer transitions 0/156 dead transitions. [2021-12-21 15:19:05,808 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 132 places, 156 transitions, 687 flow [2021-12-21 15:19:05,808 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-21 15:19:05,808 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-12-21 15:19:05,809 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 653 transitions. [2021-12-21 15:19:05,810 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7839135654261705 [2021-12-21 15:19:05,810 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 653 transitions. [2021-12-21 15:19:05,810 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 653 transitions. [2021-12-21 15:19:05,810 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-21 15:19:05,811 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 653 transitions. [2021-12-21 15:19:05,812 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) [2021-12-21 15:19:05,813 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 119.0) internal successors, (952), 8 states have internal predecessors, (952), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 15:19:05,813 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 119.0) internal successors, (952), 8 states have internal predecessors, (952), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 15:19:05,813 INFO L186 Difference]: Start difference. First operand has 126 places, 130 transitions, 429 flow. Second operand 7 states and 653 transitions. [2021-12-21 15:19:05,814 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 132 places, 156 transitions, 687 flow [2021-12-21 15:19:05,817 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 129 places, 156 transitions, 657 flow, removed 11 selfloop flow, removed 3 redundant places. [2021-12-21 15:19:05,819 INFO L242 Difference]: Finished difference. Result has 131 places, 140 transitions, 546 flow [2021-12-21 15:19:05,819 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=119, PETRI_DIFFERENCE_MINUEND_FLOW=402, PETRI_DIFFERENCE_MINUEND_PLACES=123, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=129, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=108, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=546, PETRI_PLACES=131, PETRI_TRANSITIONS=140} [2021-12-21 15:19:05,820 INFO L334 CegarLoopForPetriNet]: 113 programPoint places, 18 predicate places. [2021-12-21 15:19:05,820 INFO L470 AbstractCegarLoop]: Abstraction has has 131 places, 140 transitions, 546 flow [2021-12-21 15:19:05,820 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 89.14285714285714) internal successors, (624), 7 states have internal predecessors, (624), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 15:19:05,821 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-21 15:19:05,821 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 15:19:05,821 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-12-21 15:19:05,821 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-12-21 15:19:05,821 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 15:19:05,822 INFO L85 PathProgramCache]: Analyzing trace with hash 1795902233, now seen corresponding path program 5 times [2021-12-21 15:19:05,822 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 15:19:05,823 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [597902877] [2021-12-21 15:19:05,823 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 15:19:05,823 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 15:19:05,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:19:05,906 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 15:19:05,906 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 15:19:05,907 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [597902877] [2021-12-21 15:19:05,907 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [597902877] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 15:19:05,907 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 15:19:05,907 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-21 15:19:05,907 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [476818609] [2021-12-21 15:19:05,907 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 15:19:05,908 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-21 15:19:05,908 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 15:19:05,908 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-21 15:19:05,908 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2021-12-21 15:19:05,909 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 85 out of 119 [2021-12-21 15:19:05,909 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 131 places, 140 transitions, 546 flow. Second operand has 7 states, 7 states have (on average 89.14285714285714) internal successors, (624), 7 states have internal predecessors, (624), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 15:19:05,910 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-21 15:19:05,910 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 85 of 119 [2021-12-21 15:19:05,910 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-21 15:19:06,028 INFO L129 PetriNetUnfolder]: 151/629 cut-off events. [2021-12-21 15:19:06,028 INFO L130 PetriNetUnfolder]: For 847/883 co-relation queries the response was YES. [2021-12-21 15:19:06,030 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1659 conditions, 629 events. 151/629 cut-off events. For 847/883 co-relation queries the response was YES. Maximal size of possible extension queue 39. Compared 3551 event pairs, 44 based on Foata normal form. 36/642 useless extension candidates. Maximal degree in co-relation 808. Up to 112 conditions per place. [2021-12-21 15:19:06,032 INFO L132 encePairwiseOnDemand]: 109/119 looper letters, 46 selfloop transitions, 26 changer transitions 5/158 dead transitions. [2021-12-21 15:19:06,032 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 137 places, 158 transitions, 788 flow [2021-12-21 15:19:06,032 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-21 15:19:06,032 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-12-21 15:19:06,033 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 654 transitions. [2021-12-21 15:19:06,034 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7851140456182473 [2021-12-21 15:19:06,034 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 654 transitions. [2021-12-21 15:19:06,034 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 654 transitions. [2021-12-21 15:19:06,034 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-21 15:19:06,034 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 654 transitions. [2021-12-21 15:19:06,035 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 93.42857142857143) internal successors, (654), 7 states have internal predecessors, (654), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 15:19:06,037 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 119.0) internal successors, (952), 8 states have internal predecessors, (952), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 15:19:06,038 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 119.0) internal successors, (952), 8 states have internal predecessors, (952), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 15:19:06,038 INFO L186 Difference]: Start difference. First operand has 131 places, 140 transitions, 546 flow. Second operand 7 states and 654 transitions. [2021-12-21 15:19:06,038 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 137 places, 158 transitions, 788 flow [2021-12-21 15:19:06,040 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 134 places, 158 transitions, 764 flow, removed 8 selfloop flow, removed 3 redundant places. [2021-12-21 15:19:06,042 INFO L242 Difference]: Finished difference. Result has 135 places, 139 transitions, 577 flow [2021-12-21 15:19:06,042 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=119, PETRI_DIFFERENCE_MINUEND_FLOW=525, PETRI_DIFFERENCE_MINUEND_PLACES=128, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=139, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=115, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=577, PETRI_PLACES=135, PETRI_TRANSITIONS=139} [2021-12-21 15:19:06,045 INFO L334 CegarLoopForPetriNet]: 113 programPoint places, 22 predicate places. [2021-12-21 15:19:06,045 INFO L470 AbstractCegarLoop]: Abstraction has has 135 places, 139 transitions, 577 flow [2021-12-21 15:19:06,045 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 89.14285714285714) internal successors, (624), 7 states have internal predecessors, (624), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 15:19:06,045 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-21 15:19:06,045 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 15:19:06,045 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-12-21 15:19:06,046 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-12-21 15:19:06,046 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 15:19:06,047 INFO L85 PathProgramCache]: Analyzing trace with hash 1422402101, now seen corresponding path program 6 times [2021-12-21 15:19:06,047 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 15:19:06,047 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [857807940] [2021-12-21 15:19:06,047 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 15:19:06,048 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 15:19:06,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:19:06,141 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 15:19:06,141 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 15:19:06,141 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [857807940] [2021-12-21 15:19:06,142 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [857807940] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 15:19:06,142 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 15:19:06,142 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-21 15:19:06,142 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1305090001] [2021-12-21 15:19:06,143 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 15:19:06,143 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-21 15:19:06,143 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 15:19:06,144 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-21 15:19:06,144 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2021-12-21 15:19:06,144 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 85 out of 119 [2021-12-21 15:19:06,145 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 135 places, 139 transitions, 577 flow. Second operand has 7 states, 7 states have (on average 89.14285714285714) internal successors, (624), 7 states have internal predecessors, (624), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 15:19:06,145 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-21 15:19:06,145 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 85 of 119 [2021-12-21 15:19:06,145 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-21 15:19:06,230 INFO L129 PetriNetUnfolder]: 44/289 cut-off events. [2021-12-21 15:19:06,230 INFO L130 PetriNetUnfolder]: For 375/399 co-relation queries the response was YES. [2021-12-21 15:19:06,231 INFO L84 FinitePrefix]: Finished finitePrefix Result has 745 conditions, 289 events. 44/289 cut-off events. For 375/399 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 986 event pairs, 5 based on Foata normal form. 23/308 useless extension candidates. Maximal degree in co-relation 455. Up to 40 conditions per place. [2021-12-21 15:19:06,232 INFO L132 encePairwiseOnDemand]: 109/119 looper letters, 38 selfloop transitions, 23 changer transitions 5/141 dead transitions. [2021-12-21 15:19:06,232 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 141 places, 141 transitions, 712 flow [2021-12-21 15:19:06,232 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-21 15:19:06,232 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-12-21 15:19:06,233 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 647 transitions. [2021-12-21 15:19:06,234 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7767106842737095 [2021-12-21 15:19:06,234 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 647 transitions. [2021-12-21 15:19:06,234 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 647 transitions. [2021-12-21 15:19:06,234 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-21 15:19:06,234 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 647 transitions. [2021-12-21 15:19:06,236 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 92.42857142857143) internal successors, (647), 7 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 15:19:06,237 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 119.0) internal successors, (952), 8 states have internal predecessors, (952), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 15:19:06,237 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 119.0) internal successors, (952), 8 states have internal predecessors, (952), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 15:19:06,238 INFO L186 Difference]: Start difference. First operand has 135 places, 139 transitions, 577 flow. Second operand 7 states and 647 transitions. [2021-12-21 15:19:06,238 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 141 places, 141 transitions, 712 flow [2021-12-21 15:19:06,239 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 133 places, 141 transitions, 664 flow, removed 1 selfloop flow, removed 8 redundant places. [2021-12-21 15:19:06,241 INFO L242 Difference]: Finished difference. Result has 134 places, 126 transitions, 499 flow [2021-12-21 15:19:06,242 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=119, PETRI_DIFFERENCE_MINUEND_FLOW=446, PETRI_DIFFERENCE_MINUEND_PLACES=127, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=126, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=107, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=499, PETRI_PLACES=134, PETRI_TRANSITIONS=126} [2021-12-21 15:19:06,243 INFO L334 CegarLoopForPetriNet]: 113 programPoint places, 21 predicate places. [2021-12-21 15:19:06,243 INFO L470 AbstractCegarLoop]: Abstraction has has 134 places, 126 transitions, 499 flow [2021-12-21 15:19:06,244 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 89.14285714285714) internal successors, (624), 7 states have internal predecessors, (624), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 15:19:06,244 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-21 15:19:06,244 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 15:19:06,244 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-12-21 15:19:06,244 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-12-21 15:19:06,247 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 15:19:06,247 INFO L85 PathProgramCache]: Analyzing trace with hash 307161313, now seen corresponding path program 7 times [2021-12-21 15:19:06,247 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 15:19:06,248 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [108268602] [2021-12-21 15:19:06,248 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 15:19:06,248 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 15:19:06,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:19:06,329 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 15:19:06,330 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 15:19:06,330 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [108268602] [2021-12-21 15:19:06,330 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [108268602] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 15:19:06,330 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 15:19:06,330 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-21 15:19:06,331 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [336535004] [2021-12-21 15:19:06,331 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 15:19:06,331 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-21 15:19:06,331 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 15:19:06,331 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-21 15:19:06,332 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-12-21 15:19:06,332 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 85 out of 119 [2021-12-21 15:19:06,333 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 134 places, 126 transitions, 499 flow. Second operand has 8 states, 8 states have (on average 88.625) internal successors, (709), 8 states have internal predecessors, (709), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 15:19:06,333 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-21 15:19:06,333 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 85 of 119 [2021-12-21 15:19:06,333 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-21 15:19:06,418 INFO L129 PetriNetUnfolder]: 40/266 cut-off events. [2021-12-21 15:19:06,418 INFO L130 PetriNetUnfolder]: For 434/469 co-relation queries the response was YES. [2021-12-21 15:19:06,419 INFO L84 FinitePrefix]: Finished finitePrefix Result has 690 conditions, 266 events. 40/266 cut-off events. For 434/469 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 817 event pairs, 5 based on Foata normal form. 15/278 useless extension candidates. Maximal degree in co-relation 416. Up to 39 conditions per place. [2021-12-21 15:19:06,428 INFO L132 encePairwiseOnDemand]: 109/119 looper letters, 40 selfloop transitions, 26 changer transitions 3/144 dead transitions. [2021-12-21 15:19:06,428 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 141 places, 144 transitions, 704 flow [2021-12-21 15:19:06,428 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-12-21 15:19:06,428 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-12-21 15:19:06,429 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 739 transitions. [2021-12-21 15:19:06,430 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7762605042016807 [2021-12-21 15:19:06,430 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 739 transitions. [2021-12-21 15:19:06,430 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 739 transitions. [2021-12-21 15:19:06,431 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-21 15:19:06,431 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 739 transitions. [2021-12-21 15:19:06,432 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 92.375) internal successors, (739), 8 states have internal predecessors, (739), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 15:19:06,433 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 119.0) internal successors, (1071), 9 states have internal predecessors, (1071), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 15:19:06,433 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 119.0) internal successors, (1071), 9 states have internal predecessors, (1071), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 15:19:06,434 INFO L186 Difference]: Start difference. First operand has 134 places, 126 transitions, 499 flow. Second operand 8 states and 739 transitions. [2021-12-21 15:19:06,434 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 141 places, 144 transitions, 704 flow [2021-12-21 15:19:06,435 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 136 places, 144 transitions, 674 flow, removed 0 selfloop flow, removed 5 redundant places. [2021-12-21 15:19:06,437 INFO L242 Difference]: Finished difference. Result has 137 places, 124 transitions, 511 flow [2021-12-21 15:19:06,437 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=119, PETRI_DIFFERENCE_MINUEND_FLOW=469, PETRI_DIFFERENCE_MINUEND_PLACES=129, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=126, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=100, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=511, PETRI_PLACES=137, PETRI_TRANSITIONS=124} [2021-12-21 15:19:06,437 INFO L334 CegarLoopForPetriNet]: 113 programPoint places, 24 predicate places. [2021-12-21 15:19:06,437 INFO L470 AbstractCegarLoop]: Abstraction has has 137 places, 124 transitions, 511 flow [2021-12-21 15:19:06,438 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 88.625) internal successors, (709), 8 states have internal predecessors, (709), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 15:19:06,438 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-21 15:19:06,438 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 15:19:06,438 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-12-21 15:19:06,438 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-12-21 15:19:06,439 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 15:19:06,439 INFO L85 PathProgramCache]: Analyzing trace with hash -1232291941, now seen corresponding path program 8 times [2021-12-21 15:19:06,439 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 15:19:06,439 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [336641500] [2021-12-21 15:19:06,439 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 15:19:06,439 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 15:19:06,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:19:06,534 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 15:19:06,534 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 15:19:06,534 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [336641500] [2021-12-21 15:19:06,534 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [336641500] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 15:19:06,535 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 15:19:06,535 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-12-21 15:19:06,535 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1448683285] [2021-12-21 15:19:06,535 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 15:19:06,535 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-21 15:19:06,535 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 15:19:06,536 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-21 15:19:06,536 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2021-12-21 15:19:06,536 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 77 out of 119 [2021-12-21 15:19:06,537 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 137 places, 124 transitions, 511 flow. Second operand has 9 states, 9 states have (on average 81.11111111111111) internal successors, (730), 9 states have internal predecessors, (730), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 15:19:06,537 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-21 15:19:06,537 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 77 of 119 [2021-12-21 15:19:06,538 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-21 15:19:06,685 INFO L129 PetriNetUnfolder]: 54/287 cut-off events. [2021-12-21 15:19:06,685 INFO L130 PetriNetUnfolder]: For 612/612 co-relation queries the response was YES. [2021-12-21 15:19:06,686 INFO L84 FinitePrefix]: Finished finitePrefix Result has 837 conditions, 287 events. 54/287 cut-off events. For 612/612 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 865 event pairs, 5 based on Foata normal form. 3/286 useless extension candidates. Maximal degree in co-relation 490. Up to 56 conditions per place. [2021-12-21 15:19:06,687 INFO L132 encePairwiseOnDemand]: 109/119 looper letters, 54 selfloop transitions, 21 changer transitions 8/147 dead transitions. [2021-12-21 15:19:06,687 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 146 places, 147 transitions, 790 flow [2021-12-21 15:19:06,687 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-12-21 15:19:06,687 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2021-12-21 15:19:06,689 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 840 transitions. [2021-12-21 15:19:06,689 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7058823529411765 [2021-12-21 15:19:06,689 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 840 transitions. [2021-12-21 15:19:06,689 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 840 transitions. [2021-12-21 15:19:06,690 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-21 15:19:06,690 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 840 transitions. [2021-12-21 15:19:06,691 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 84.0) internal successors, (840), 10 states have internal predecessors, (840), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 15:19:06,693 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 119.0) internal successors, (1309), 11 states have internal predecessors, (1309), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 15:19:06,693 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 119.0) internal successors, (1309), 11 states have internal predecessors, (1309), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 15:19:06,693 INFO L186 Difference]: Start difference. First operand has 137 places, 124 transitions, 511 flow. Second operand 10 states and 840 transitions. [2021-12-21 15:19:06,693 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 146 places, 147 transitions, 790 flow [2021-12-21 15:19:06,695 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 139 places, 147 transitions, 736 flow, removed 4 selfloop flow, removed 7 redundant places. [2021-12-21 15:19:06,697 INFO L242 Difference]: Finished difference. Result has 140 places, 122 transitions, 488 flow [2021-12-21 15:19:06,697 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=119, PETRI_DIFFERENCE_MINUEND_FLOW=461, PETRI_DIFFERENCE_MINUEND_PLACES=130, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=124, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=103, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=488, PETRI_PLACES=140, PETRI_TRANSITIONS=122} [2021-12-21 15:19:06,698 INFO L334 CegarLoopForPetriNet]: 113 programPoint places, 27 predicate places. [2021-12-21 15:19:06,698 INFO L470 AbstractCegarLoop]: Abstraction has has 140 places, 122 transitions, 488 flow [2021-12-21 15:19:06,698 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 81.11111111111111) internal successors, (730), 9 states have internal predecessors, (730), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 15:19:06,698 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-21 15:19:06,698 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 15:19:06,699 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-12-21 15:19:06,699 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-12-21 15:19:06,699 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 15:19:06,699 INFO L85 PathProgramCache]: Analyzing trace with hash -1779733505, now seen corresponding path program 9 times [2021-12-21 15:19:06,699 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 15:19:06,700 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1236920905] [2021-12-21 15:19:06,700 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 15:19:06,700 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 15:19:06,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:19:06,812 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 15:19:06,813 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 15:19:06,813 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1236920905] [2021-12-21 15:19:06,813 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1236920905] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 15:19:06,813 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 15:19:06,813 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-12-21 15:19:06,813 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1875328199] [2021-12-21 15:19:06,814 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 15:19:06,814 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-21 15:19:06,814 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 15:19:06,814 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-21 15:19:06,815 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2021-12-21 15:19:06,815 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 77 out of 119 [2021-12-21 15:19:06,816 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 140 places, 122 transitions, 488 flow. Second operand has 9 states, 9 states have (on average 81.11111111111111) internal successors, (730), 9 states have internal predecessors, (730), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 15:19:06,816 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-21 15:19:06,816 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 77 of 119 [2021-12-21 15:19:06,816 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-21 15:19:06,992 INFO L129 PetriNetUnfolder]: 36/246 cut-off events. [2021-12-21 15:19:06,993 INFO L130 PetriNetUnfolder]: For 480/480 co-relation queries the response was YES. [2021-12-21 15:19:06,993 INFO L84 FinitePrefix]: Finished finitePrefix Result has 706 conditions, 246 events. 36/246 cut-off events. For 480/480 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 695 event pairs, 2 based on Foata normal form. 8/250 useless extension candidates. Maximal degree in co-relation 477. Up to 36 conditions per place. [2021-12-21 15:19:06,994 INFO L132 encePairwiseOnDemand]: 109/119 looper letters, 40 selfloop transitions, 12 changer transitions 25/141 dead transitions. [2021-12-21 15:19:06,994 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 146 places, 141 transitions, 747 flow [2021-12-21 15:19:07,005 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-12-21 15:19:07,005 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2021-12-21 15:19:07,006 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 841 transitions. [2021-12-21 15:19:07,007 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7067226890756303 [2021-12-21 15:19:07,007 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 841 transitions. [2021-12-21 15:19:07,007 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 841 transitions. [2021-12-21 15:19:07,007 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-21 15:19:07,007 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 841 transitions. [2021-12-21 15:19:07,009 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 84.1) internal successors, (841), 10 states have internal predecessors, (841), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 15:19:07,010 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 119.0) internal successors, (1309), 11 states have internal predecessors, (1309), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 15:19:07,010 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 119.0) internal successors, (1309), 11 states have internal predecessors, (1309), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 15:19:07,010 INFO L186 Difference]: Start difference. First operand has 140 places, 122 transitions, 488 flow. Second operand 10 states and 841 transitions. [2021-12-21 15:19:07,010 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 146 places, 141 transitions, 747 flow [2021-12-21 15:19:07,012 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 137 places, 141 transitions, 684 flow, removed 7 selfloop flow, removed 9 redundant places. [2021-12-21 15:19:07,013 INFO L242 Difference]: Finished difference. Result has 139 places, 107 transitions, 351 flow [2021-12-21 15:19:07,014 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=119, PETRI_DIFFERENCE_MINUEND_FLOW=410, PETRI_DIFFERENCE_MINUEND_PLACES=128, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=117, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=105, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=351, PETRI_PLACES=139, PETRI_TRANSITIONS=107} [2021-12-21 15:19:07,014 INFO L334 CegarLoopForPetriNet]: 113 programPoint places, 26 predicate places. [2021-12-21 15:19:07,014 INFO L470 AbstractCegarLoop]: Abstraction has has 139 places, 107 transitions, 351 flow [2021-12-21 15:19:07,014 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 81.11111111111111) internal successors, (730), 9 states have internal predecessors, (730), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 15:19:07,014 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-21 15:19:07,014 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 15:19:07,015 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-12-21 15:19:07,015 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-12-21 15:19:07,015 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 15:19:07,016 INFO L85 PathProgramCache]: Analyzing trace with hash -1704188151, now seen corresponding path program 10 times [2021-12-21 15:19:07,016 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 15:19:07,016 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [950598920] [2021-12-21 15:19:07,016 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 15:19:07,016 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 15:19:07,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:19:07,187 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 15:19:07,188 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 15:19:07,188 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [950598920] [2021-12-21 15:19:07,188 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [950598920] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 15:19:07,188 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 15:19:07,188 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-12-21 15:19:07,188 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [991657745] [2021-12-21 15:19:07,188 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 15:19:07,189 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-21 15:19:07,189 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 15:19:07,189 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-21 15:19:07,189 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2021-12-21 15:19:07,190 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 77 out of 119 [2021-12-21 15:19:07,190 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 139 places, 107 transitions, 351 flow. Second operand has 9 states, 9 states have (on average 81.11111111111111) internal successors, (730), 9 states have internal predecessors, (730), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 15:19:07,190 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-21 15:19:07,190 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 77 of 119 [2021-12-21 15:19:07,190 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-21 15:19:07,339 INFO L129 PetriNetUnfolder]: 6/95 cut-off events. [2021-12-21 15:19:07,339 INFO L130 PetriNetUnfolder]: For 120/120 co-relation queries the response was YES. [2021-12-21 15:19:07,339 INFO L84 FinitePrefix]: Finished finitePrefix Result has 240 conditions, 95 events. 6/95 cut-off events. For 120/120 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 71 event pairs, 0 based on Foata normal form. 6/101 useless extension candidates. Maximal degree in co-relation 191. Up to 11 conditions per place. [2021-12-21 15:19:07,340 INFO L132 encePairwiseOnDemand]: 111/119 looper letters, 0 selfloop transitions, 0 changer transitions 87/87 dead transitions. [2021-12-21 15:19:07,340 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 119 places, 87 transitions, 368 flow [2021-12-21 15:19:07,340 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-12-21 15:19:07,340 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2021-12-21 15:19:07,341 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 807 transitions. [2021-12-21 15:19:07,342 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.6781512605042017 [2021-12-21 15:19:07,342 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 807 transitions. [2021-12-21 15:19:07,342 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 807 transitions. [2021-12-21 15:19:07,342 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-21 15:19:07,342 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 807 transitions. [2021-12-21 15:19:07,343 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 80.7) internal successors, (807), 10 states have internal predecessors, (807), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 15:19:07,345 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 119.0) internal successors, (1309), 11 states have internal predecessors, (1309), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 15:19:07,345 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 119.0) internal successors, (1309), 11 states have internal predecessors, (1309), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 15:19:07,345 INFO L186 Difference]: Start difference. First operand has 139 places, 107 transitions, 351 flow. Second operand 10 states and 807 transitions. [2021-12-21 15:19:07,345 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 119 places, 87 transitions, 368 flow [2021-12-21 15:19:07,346 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 99 places, 87 transitions, 285 flow, removed 16 selfloop flow, removed 20 redundant places. [2021-12-21 15:19:07,346 INFO L242 Difference]: Finished difference. Result has 99 places, 0 transitions, 0 flow [2021-12-21 15:19:07,347 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=119, PETRI_DIFFERENCE_MINUEND_FLOW=195, PETRI_DIFFERENCE_MINUEND_PLACES=90, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=79, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=79, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=0, PETRI_PLACES=99, PETRI_TRANSITIONS=0} [2021-12-21 15:19:07,347 INFO L334 CegarLoopForPetriNet]: 113 programPoint places, -14 predicate places. [2021-12-21 15:19:07,348 INFO L470 AbstractCegarLoop]: Abstraction has has 99 places, 0 transitions, 0 flow [2021-12-21 15:19:07,348 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 81.11111111111111) internal successors, (730), 9 states have internal predecessors, (730), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 15:19:07,350 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (3 of 4 remaining) [2021-12-21 15:19:07,350 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATION (2 of 4 remaining) [2021-12-21 15:19:07,350 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATION (1 of 4 remaining) [2021-12-21 15:19:07,351 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATION (0 of 4 remaining) [2021-12-21 15:19:07,351 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-12-21 15:19:07,353 INFO L732 BasicCegarLoop]: Path program histogram: [10] [2021-12-21 15:19:07,355 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2021-12-21 15:19:07,355 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-12-21 15:19:07,357 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.12 03:19:07 BasicIcfg [2021-12-21 15:19:07,357 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-12-21 15:19:07,357 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-12-21 15:19:07,358 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-12-21 15:19:07,358 INFO L275 PluginConnector]: Witness Printer initialized [2021-12-21 15:19:07,358 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.12 03:19:03" (3/4) ... [2021-12-21 15:19:07,360 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-12-21 15:19:07,363 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure thread1 [2021-12-21 15:19:07,363 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure thread2 [2021-12-21 15:19:07,363 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure thread3 [2021-12-21 15:19:07,366 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 20 nodes and edges [2021-12-21 15:19:07,366 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2021-12-21 15:19:07,366 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2021-12-21 15:19:07,366 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-12-21 15:19:07,389 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2021-12-21 15:19:07,389 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-12-21 15:19:07,390 INFO L158 Benchmark]: Toolchain (without parser) took 4942.00ms. Allocated memory was 107.0MB in the beginning and 192.9MB in the end (delta: 86.0MB). Free memory was 77.9MB in the beginning and 127.2MB in the end (delta: -49.3MB). Peak memory consumption was 35.9MB. Max. memory is 16.1GB. [2021-12-21 15:19:07,390 INFO L158 Benchmark]: CDTParser took 0.17ms. Allocated memory is still 107.0MB. Free memory is still 64.0MB. There was no memory consumed. Max. memory is 16.1GB. [2021-12-21 15:19:07,390 INFO L158 Benchmark]: CACSL2BoogieTranslator took 364.46ms. Allocated memory is still 107.0MB. Free memory was 77.7MB in the beginning and 82.7MB in the end (delta: -5.0MB). Peak memory consumption was 9.8MB. Max. memory is 16.1GB. [2021-12-21 15:19:07,390 INFO L158 Benchmark]: Boogie Procedure Inliner took 26.01ms. Allocated memory is still 107.0MB. Free memory was 82.3MB in the beginning and 80.6MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-12-21 15:19:07,390 INFO L158 Benchmark]: Boogie Preprocessor took 19.49ms. Allocated memory is still 107.0MB. Free memory was 80.6MB in the beginning and 79.4MB in the end (delta: 1.2MB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-21 15:19:07,391 INFO L158 Benchmark]: RCFGBuilder took 336.36ms. Allocated memory is still 107.0MB. Free memory was 79.0MB in the beginning and 62.3MB in the end (delta: 16.7MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2021-12-21 15:19:07,391 INFO L158 Benchmark]: TraceAbstraction took 4156.30ms. Allocated memory was 107.0MB in the beginning and 192.9MB in the end (delta: 86.0MB). Free memory was 62.1MB in the beginning and 130.4MB in the end (delta: -68.3MB). Peak memory consumption was 17.7MB. Max. memory is 16.1GB. [2021-12-21 15:19:07,391 INFO L158 Benchmark]: Witness Printer took 31.95ms. Allocated memory is still 192.9MB. Free memory was 130.4MB in the beginning and 127.2MB in the end (delta: 3.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2021-12-21 15:19:07,393 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17ms. Allocated memory is still 107.0MB. Free memory is still 64.0MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 364.46ms. Allocated memory is still 107.0MB. Free memory was 77.7MB in the beginning and 82.7MB in the end (delta: -5.0MB). Peak memory consumption was 9.8MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 26.01ms. Allocated memory is still 107.0MB. Free memory was 82.3MB in the beginning and 80.6MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 19.49ms. Allocated memory is still 107.0MB. Free memory was 80.6MB in the beginning and 79.4MB in the end (delta: 1.2MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 336.36ms. Allocated memory is still 107.0MB. Free memory was 79.0MB in the beginning and 62.3MB in the end (delta: 16.7MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * TraceAbstraction took 4156.30ms. Allocated memory was 107.0MB in the beginning and 192.9MB in the end (delta: 86.0MB). Free memory was 62.1MB in the beginning and 130.4MB in the end (delta: -68.3MB). Peak memory consumption was 17.7MB. Max. memory is 16.1GB. * Witness Printer took 31.95ms. Allocated memory is still 192.9MB. Free memory was 130.4MB in the beginning and 127.2MB in the end (delta: 3.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 124]: 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 7 procedures, 143 locations, 4 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: 4.0s, OverallIterations: 10, TraceHistogramMax: 1, PathProgramHistogramMax: 10, EmptinessCheckTime: 0.0s, AutomataDifference: 2.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 480 SdHoareTripleChecker+Valid, 0.9s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 480 mSDsluCounter, 506 SdHoareTripleChecker+Invalid, 0.7s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 781 mSDsCounter, 169 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1754 IncrementalHoareTripleChecker+Invalid, 1923 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 169 mSolverCounterUnsat, 169 mSDtfsCounter, 1754 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 121 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 100 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 133 ImplicationChecksByTransitivity, 0.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=577occurred in iteration=5, InterpolantAutomatonStates: 93, 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: 0.0s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 1.1s InterpolantComputationTime, 1010 NumberOfCodeBlocks, 1010 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 1000 ConstructedInterpolants, 0 QuantifiedInterpolants, 3646 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 10 InterpolantComputations, 10 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 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2021-12-21 15:19:07,439 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE