/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-NoLbe-After.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/pthread-wmm/safe015_pso.oepc_pso.opt_tso.oepc_tso.opt.i -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-bf34d27 [2022-01-19 11:20:03,343 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-19 11:20:03,366 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-19 11:20:03,397 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-01-19 11:20:03,397 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-01-19 11:20:03,398 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-01-19 11:20:03,399 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-01-19 11:20:03,401 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-01-19 11:20:03,402 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-01-19 11:20:03,403 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-01-19 11:20:03,403 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-01-19 11:20:03,404 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-01-19 11:20:03,405 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-01-19 11:20:03,406 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-01-19 11:20:03,406 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-01-19 11:20:03,407 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-01-19 11:20:03,408 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-01-19 11:20:03,408 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-01-19 11:20:03,409 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-01-19 11:20:03,411 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-01-19 11:20:03,411 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-01-19 11:20:03,412 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-01-19 11:20:03,413 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-01-19 11:20:03,414 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-01-19 11:20:03,415 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-01-19 11:20:03,416 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-01-19 11:20:03,416 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-01-19 11:20:03,417 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-01-19 11:20:03,417 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-01-19 11:20:03,417 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-01-19 11:20:03,417 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-01-19 11:20:03,418 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-01-19 11:20:03,418 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-01-19 11:20:03,419 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-01-19 11:20:03,420 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-01-19 11:20:03,420 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-01-19 11:20:03,420 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-01-19 11:20:03,420 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-01-19 11:20:03,420 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-19 11:20:03,421 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-19 11:20:03,421 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-19 11:20:03,424 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-NoLbe-After.epf [2022-01-19 11:20:03,438 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-19 11:20:03,438 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-19 11:20:03,444 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-01-19 11:20:03,444 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-01-19 11:20:03,444 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-19 11:20:03,444 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-19 11:20:03,445 INFO L138 SettingsManager]: * Use SBE=true [2022-01-19 11:20:03,445 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-19 11:20:03,445 INFO L138 SettingsManager]: * sizeof long=4 [2022-01-19 11:20:03,445 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-19 11:20:03,445 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-01-19 11:20:03,446 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-19 11:20:03,446 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-19 11:20:03,446 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-19 11:20:03,446 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-19 11:20:03,446 INFO L138 SettingsManager]: * sizeof long double=12 [2022-01-19 11:20:03,446 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-19 11:20:03,446 INFO L138 SettingsManager]: * Use constant arrays=true [2022-01-19 11:20:03,446 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-19 11:20:03,446 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-19 11:20:03,446 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-19 11:20:03,446 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-01-19 11:20:03,446 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-19 11:20:03,447 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-19 11:20:03,447 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-19 11:20:03,447 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-19 11:20:03,447 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-19 11:20:03,447 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-01-19 11:20:03,447 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-01-19 11:20:03,448 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-19 11:20:03,448 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-01-19 11:20:03,448 INFO L138 SettingsManager]: * When to check the insufficient erros location relative to the other error locations=AFTER [2022-01-19 11:20:03,448 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2022-01-19 11:20:03,668 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-19 11:20:03,697 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-19 11:20:03,699 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-19 11:20:03,700 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-19 11:20:03,701 INFO L275 PluginConnector]: CDTParser initialized [2022-01-19 11:20:03,702 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe015_pso.oepc_pso.opt_tso.oepc_tso.opt.i [2022-01-19 11:20:03,766 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/24790e50e/d9602566893a4098985edba192879631/FLAGfa9311ff1 [2022-01-19 11:20:04,181 INFO L306 CDTParser]: Found 1 translation units. [2022-01-19 11:20:04,181 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe015_pso.oepc_pso.opt_tso.oepc_tso.opt.i [2022-01-19 11:20:04,193 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/24790e50e/d9602566893a4098985edba192879631/FLAGfa9311ff1 [2022-01-19 11:20:04,204 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/24790e50e/d9602566893a4098985edba192879631 [2022-01-19 11:20:04,207 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-19 11:20:04,208 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-01-19 11:20:04,209 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-19 11:20:04,209 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-19 11:20:04,211 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-19 11:20:04,211 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.01 11:20:04" (1/1) ... [2022-01-19 11:20:04,212 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5e4524ee and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 11:20:04, skipping insertion in model container [2022-01-19 11:20:04,212 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.01 11:20:04" (1/1) ... [2022-01-19 11:20:04,216 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-19 11:20:04,248 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-19 11:20:04,389 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe015_pso.oepc_pso.opt_tso.oepc_tso.opt.i[975,988] [2022-01-19 11:20:04,513 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-19 11:20:04,519 INFO L203 MainTranslator]: Completed pre-run [2022-01-19 11:20:04,527 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe015_pso.oepc_pso.opt_tso.oepc_tso.opt.i[975,988] [2022-01-19 11:20:04,554 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-19 11:20:04,582 INFO L208 MainTranslator]: Completed translation [2022-01-19 11:20:04,583 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 11:20:04 WrapperNode [2022-01-19 11:20:04,583 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-19 11:20:04,584 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-19 11:20:04,584 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-19 11:20:04,584 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-19 11:20:04,588 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 11:20:04" (1/1) ... [2022-01-19 11:20:04,610 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 11:20:04" (1/1) ... [2022-01-19 11:20:04,628 INFO L137 Inliner]: procedures = 176, calls = 55, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 70 [2022-01-19 11:20:04,629 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-19 11:20:04,630 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-19 11:20:04,630 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-19 11:20:04,630 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-19 11:20:04,636 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 11:20:04" (1/1) ... [2022-01-19 11:20:04,636 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 11:20:04" (1/1) ... [2022-01-19 11:20:04,653 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 11:20:04" (1/1) ... [2022-01-19 11:20:04,653 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 11:20:04" (1/1) ... [2022-01-19 11:20:04,657 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 11:20:04" (1/1) ... [2022-01-19 11:20:04,658 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 11:20:04" (1/1) ... [2022-01-19 11:20:04,659 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 11:20:04" (1/1) ... [2022-01-19 11:20:04,661 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-19 11:20:04,662 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-19 11:20:04,662 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-19 11:20:04,662 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-19 11:20:04,680 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 11:20:04" (1/1) ... [2022-01-19 11:20:04,687 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-19 11:20:04,699 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-19 11:20:04,764 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-01-19 11:20:04,771 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-01-19 11:20:04,792 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-01-19 11:20:04,793 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-01-19 11:20:04,793 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-19 11:20:04,793 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-01-19 11:20:04,793 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-01-19 11:20:04,793 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2022-01-19 11:20:04,793 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2022-01-19 11:20:04,793 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2022-01-19 11:20:04,793 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2022-01-19 11:20:04,793 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2022-01-19 11:20:04,793 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2022-01-19 11:20:04,793 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-01-19 11:20:04,793 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-01-19 11:20:04,793 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-19 11:20:04,794 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-19 11:20:04,794 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-01-19 11:20:04,891 INFO L234 CfgBuilder]: Building ICFG [2022-01-19 11:20:04,893 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-19 11:20:05,039 INFO L275 CfgBuilder]: Performing block encoding [2022-01-19 11:20:05,043 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-19 11:20:05,044 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-01-19 11:20:05,045 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.01 11:20:05 BoogieIcfgContainer [2022-01-19 11:20:05,045 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-19 11:20:05,046 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-19 11:20:05,046 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-19 11:20:05,048 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-19 11:20:05,048 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.01 11:20:04" (1/3) ... [2022-01-19 11:20:05,049 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@41c669d5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.01 11:20:05, skipping insertion in model container [2022-01-19 11:20:05,049 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 11:20:04" (2/3) ... [2022-01-19 11:20:05,049 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@41c669d5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.01 11:20:05, skipping insertion in model container [2022-01-19 11:20:05,049 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.01 11:20:05" (3/3) ... [2022-01-19 11:20:05,050 INFO L111 eAbstractionObserver]: Analyzing ICFG safe015_pso.oepc_pso.opt_tso.oepc_tso.opt.i [2022-01-19 11:20:05,053 INFO L205 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-19 11:20:05,053 INFO L164 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-01-19 11:20:05,053 INFO L534 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-01-19 11:20:05,073 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 11:20:05,074 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 11:20:05,074 WARN L322 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 11:20:05,074 WARN L322 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 11:20:05,074 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 11:20:05,074 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 11:20:05,074 WARN L322 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 11:20:05,074 WARN L322 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 11:20:05,075 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 11:20:05,075 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 11:20:05,075 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 11:20:05,075 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 11:20:05,075 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 11:20:05,075 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 11:20:05,075 WARN L322 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 11:20:05,075 WARN L322 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 11:20:05,076 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 11:20:05,076 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 11:20:05,076 WARN L322 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 11:20:05,076 WARN L322 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 11:20:05,076 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 11:20:05,076 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 11:20:05,076 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 11:20:05,076 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 11:20:05,077 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 11:20:05,077 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 11:20:05,077 WARN L322 ript$VariableManager]: TermVariabe P2Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 11:20:05,077 WARN L322 ript$VariableManager]: TermVariabe P2Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 11:20:05,077 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 11:20:05,077 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 11:20:05,077 WARN L322 ript$VariableManager]: TermVariabe P2Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 11:20:05,077 WARN L322 ript$VariableManager]: TermVariabe P2Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 11:20:05,078 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 11:20:05,078 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 11:20:05,078 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 11:20:05,078 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 11:20:05,080 WARN L322 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 11:20:05,081 WARN L322 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 11:20:05,081 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 11:20:05,081 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 11:20:05,082 WARN L322 ript$VariableManager]: TermVariabe P2Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 11:20:05,083 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 11:20:05,083 WARN L322 ript$VariableManager]: TermVariabe P2Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 11:20:05,083 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 11:20:05,083 WARN L322 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 11:20:05,084 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 11:20:05,084 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 11:20:05,084 WARN L322 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 11:20:05,084 INFO L148 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-01-19 11:20:05,117 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-19 11:20:05,123 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=false, 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 [2022-01-19 11:20:05,124 INFO L340 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2022-01-19 11:20:05,131 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 99 places, 91 transitions, 197 flow [2022-01-19 11:20:05,170 INFO L129 PetriNetUnfolder]: 2/88 cut-off events. [2022-01-19 11:20:05,170 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-01-19 11:20:05,172 INFO L84 FinitePrefix]: Finished finitePrefix Result has 98 conditions, 88 events. 2/88 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 46 event pairs, 0 based on Foata normal form. 0/85 useless extension candidates. Maximal degree in co-relation 68. Up to 2 conditions per place. [2022-01-19 11:20:05,173 INFO L82 GeneralOperation]: Start removeDead. Operand has 99 places, 91 transitions, 197 flow [2022-01-19 11:20:05,175 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 83 places, 74 transitions, 157 flow [2022-01-19 11:20:05,192 INFO L129 PetriNetUnfolder]: 1/73 cut-off events. [2022-01-19 11:20:05,193 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-01-19 11:20:05,193 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 11:20:05,194 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] [2022-01-19 11:20:05,194 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-19 11:20:05,198 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 11:20:05,199 INFO L85 PathProgramCache]: Analyzing trace with hash -1788437869, now seen corresponding path program 1 times [2022-01-19 11:20:05,206 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 11:20:05,207 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1400953371] [2022-01-19 11:20:05,207 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 11:20:05,208 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 11:20:05,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 11:20:05,569 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 11:20:05,569 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 11:20:05,570 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1400953371] [2022-01-19 11:20:05,571 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1400953371] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 11:20:05,571 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 11:20:05,571 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-19 11:20:05,572 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [793781982] [2022-01-19 11:20:05,573 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 11:20:05,580 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-19 11:20:05,580 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 11:20:05,613 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-19 11:20:05,616 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-01-19 11:20:05,623 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 68 out of 91 [2022-01-19 11:20:05,631 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 74 transitions, 157 flow. Second operand has 7 states, 7 states have (on average 69.85714285714286) internal successors, (489), 7 states have internal predecessors, (489), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 11:20:05,631 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 11:20:05,631 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 68 of 91 [2022-01-19 11:20:05,632 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 11:20:05,922 INFO L129 PetriNetUnfolder]: 555/1250 cut-off events. [2022-01-19 11:20:05,922 INFO L130 PetriNetUnfolder]: For 13/13 co-relation queries the response was YES. [2022-01-19 11:20:05,927 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2178 conditions, 1250 events. 555/1250 cut-off events. For 13/13 co-relation queries the response was YES. Maximal size of possible extension queue 93. Compared 7557 event pairs, 43 based on Foata normal form. 42/1245 useless extension candidates. Maximal degree in co-relation 2141. Up to 248 conditions per place. [2022-01-19 11:20:05,934 INFO L132 encePairwiseOnDemand]: 79/91 looper letters, 25 selfloop transitions, 7 changer transitions 56/142 dead transitions. [2022-01-19 11:20:05,936 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 95 places, 142 transitions, 469 flow [2022-01-19 11:20:05,941 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-01-19 11:20:05,944 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2022-01-19 11:20:05,953 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 978 transitions. [2022-01-19 11:20:05,958 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8267117497886729 [2022-01-19 11:20:05,958 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 978 transitions. [2022-01-19 11:20:05,958 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 978 transitions. [2022-01-19 11:20:05,961 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 11:20:05,963 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 978 transitions. [2022-01-19 11:20:05,967 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 75.23076923076923) internal successors, (978), 13 states have internal predecessors, (978), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 11:20:05,974 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 91.0) internal successors, (1274), 14 states have internal predecessors, (1274), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 11:20:05,975 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 91.0) internal successors, (1274), 14 states have internal predecessors, (1274), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 11:20:05,976 INFO L186 Difference]: Start difference. First operand has 83 places, 74 transitions, 157 flow. Second operand 13 states and 978 transitions. [2022-01-19 11:20:05,977 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 95 places, 142 transitions, 469 flow [2022-01-19 11:20:05,986 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 92 places, 142 transitions, 466 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-01-19 11:20:05,989 INFO L242 Difference]: Finished difference. Result has 104 places, 78 transitions, 252 flow [2022-01-19 11:20:05,991 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=91, PETRI_DIFFERENCE_MINUEND_FLOW=152, PETRI_DIFFERENCE_MINUEND_PLACES=80, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=73, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=66, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=252, PETRI_PLACES=104, PETRI_TRANSITIONS=78} [2022-01-19 11:20:05,994 INFO L334 CegarLoopForPetriNet]: 83 programPoint places, 21 predicate places. [2022-01-19 11:20:05,994 INFO L470 AbstractCegarLoop]: Abstraction has has 104 places, 78 transitions, 252 flow [2022-01-19 11:20:05,994 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 69.85714285714286) internal successors, (489), 7 states have internal predecessors, (489), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 11:20:05,994 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 11:20:05,995 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] [2022-01-19 11:20:05,995 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-01-19 11:20:05,995 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-19 11:20:05,996 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 11:20:05,996 INFO L85 PathProgramCache]: Analyzing trace with hash -1408539500, now seen corresponding path program 1 times [2022-01-19 11:20:05,996 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 11:20:05,996 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [184619609] [2022-01-19 11:20:05,997 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 11:20:05,997 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 11:20:06,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 11:20:06,139 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 11:20:06,139 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 11:20:06,139 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [184619609] [2022-01-19 11:20:06,156 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [184619609] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 11:20:06,156 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 11:20:06,156 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-01-19 11:20:06,156 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1107412603] [2022-01-19 11:20:06,156 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 11:20:06,158 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-19 11:20:06,158 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 11:20:06,158 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-19 11:20:06,159 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-01-19 11:20:06,159 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 75 out of 91 [2022-01-19 11:20:06,160 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 104 places, 78 transitions, 252 flow. Second operand has 6 states, 6 states have (on average 76.66666666666667) internal successors, (460), 6 states have internal predecessors, (460), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 11:20:06,160 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 11:20:06,160 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 75 of 91 [2022-01-19 11:20:06,161 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 11:20:06,321 INFO L129 PetriNetUnfolder]: 253/742 cut-off events. [2022-01-19 11:20:06,321 INFO L130 PetriNetUnfolder]: For 1859/2137 co-relation queries the response was YES. [2022-01-19 11:20:06,325 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2380 conditions, 742 events. 253/742 cut-off events. For 1859/2137 co-relation queries the response was YES. Maximal size of possible extension queue 70. Compared 4556 event pairs, 99 based on Foata normal form. 46/741 useless extension candidates. Maximal degree in co-relation 2335. Up to 227 conditions per place. [2022-01-19 11:20:06,328 INFO L132 encePairwiseOnDemand]: 84/91 looper letters, 15 selfloop transitions, 5 changer transitions 31/115 dead transitions. [2022-01-19 11:20:06,328 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 103 places, 115 transitions, 628 flow [2022-01-19 11:20:06,329 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-01-19 11:20:06,329 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-01-19 11:20:06,330 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 712 transitions. [2022-01-19 11:20:06,330 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8693528693528694 [2022-01-19 11:20:06,330 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 712 transitions. [2022-01-19 11:20:06,331 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 712 transitions. [2022-01-19 11:20:06,331 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 11:20:06,331 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 712 transitions. [2022-01-19 11:20:06,332 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 79.11111111111111) internal successors, (712), 9 states have internal predecessors, (712), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 11:20:06,333 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 91.0) internal successors, (910), 10 states have internal predecessors, (910), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 11:20:06,334 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 91.0) internal successors, (910), 10 states have internal predecessors, (910), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 11:20:06,334 INFO L186 Difference]: Start difference. First operand has 104 places, 78 transitions, 252 flow. Second operand 9 states and 712 transitions. [2022-01-19 11:20:06,334 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 103 places, 115 transitions, 628 flow [2022-01-19 11:20:06,342 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 99 places, 115 transitions, 612 flow, removed 7 selfloop flow, removed 4 redundant places. [2022-01-19 11:20:06,344 INFO L242 Difference]: Finished difference. Result has 106 places, 82 transitions, 337 flow [2022-01-19 11:20:06,344 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=91, PETRI_DIFFERENCE_MINUEND_FLOW=244, PETRI_DIFFERENCE_MINUEND_PLACES=91, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=78, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=73, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=337, PETRI_PLACES=106, PETRI_TRANSITIONS=82} [2022-01-19 11:20:06,345 INFO L334 CegarLoopForPetriNet]: 83 programPoint places, 23 predicate places. [2022-01-19 11:20:06,345 INFO L470 AbstractCegarLoop]: Abstraction has has 106 places, 82 transitions, 337 flow [2022-01-19 11:20:06,345 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 76.66666666666667) internal successors, (460), 6 states have internal predecessors, (460), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 11:20:06,345 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 11:20:06,345 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] [2022-01-19 11:20:06,346 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-01-19 11:20:06,346 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-19 11:20:06,346 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 11:20:06,346 INFO L85 PathProgramCache]: Analyzing trace with hash 728700683, now seen corresponding path program 1 times [2022-01-19 11:20:06,347 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 11:20:06,347 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [808353108] [2022-01-19 11:20:06,347 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 11:20:06,347 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 11:20:06,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 11:20:06,486 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 11:20:06,487 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 11:20:06,487 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [808353108] [2022-01-19 11:20:06,487 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [808353108] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 11:20:06,487 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 11:20:06,487 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-19 11:20:06,488 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1428365388] [2022-01-19 11:20:06,488 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 11:20:06,488 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-19 11:20:06,488 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 11:20:06,489 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-19 11:20:06,489 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-01-19 11:20:06,490 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 68 out of 91 [2022-01-19 11:20:06,491 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 106 places, 82 transitions, 337 flow. Second operand has 7 states, 7 states have (on average 70.14285714285714) internal successors, (491), 7 states have internal predecessors, (491), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 11:20:06,491 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 11:20:06,492 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 68 of 91 [2022-01-19 11:20:06,492 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 11:20:06,716 INFO L129 PetriNetUnfolder]: 232/711 cut-off events. [2022-01-19 11:20:06,716 INFO L130 PetriNetUnfolder]: For 3257/3645 co-relation queries the response was YES. [2022-01-19 11:20:06,719 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2731 conditions, 711 events. 232/711 cut-off events. For 3257/3645 co-relation queries the response was YES. Maximal size of possible extension queue 48. Compared 3949 event pairs, 6 based on Foata normal form. 22/708 useless extension candidates. Maximal degree in co-relation 2678. Up to 196 conditions per place. [2022-01-19 11:20:06,722 INFO L132 encePairwiseOnDemand]: 79/91 looper letters, 32 selfloop transitions, 14 changer transitions 43/143 dead transitions. [2022-01-19 11:20:06,722 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 112 places, 143 transitions, 1110 flow [2022-01-19 11:20:06,722 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-01-19 11:20:06,723 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2022-01-19 11:20:06,724 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 955 transitions. [2022-01-19 11:20:06,724 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8072696534234995 [2022-01-19 11:20:06,724 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 955 transitions. [2022-01-19 11:20:06,725 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 955 transitions. [2022-01-19 11:20:06,725 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 11:20:06,725 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 955 transitions. [2022-01-19 11:20:06,726 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 73.46153846153847) internal successors, (955), 13 states have internal predecessors, (955), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 11:20:06,728 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 91.0) internal successors, (1274), 14 states have internal predecessors, (1274), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 11:20:06,728 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 91.0) internal successors, (1274), 14 states have internal predecessors, (1274), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 11:20:06,728 INFO L186 Difference]: Start difference. First operand has 106 places, 82 transitions, 337 flow. Second operand 13 states and 955 transitions. [2022-01-19 11:20:06,728 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 112 places, 143 transitions, 1110 flow [2022-01-19 11:20:06,734 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 108 places, 143 transitions, 1078 flow, removed 12 selfloop flow, removed 4 redundant places. [2022-01-19 11:20:06,743 INFO L242 Difference]: Finished difference. Result has 120 places, 90 transitions, 509 flow [2022-01-19 11:20:06,743 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=91, PETRI_DIFFERENCE_MINUEND_FLOW=326, PETRI_DIFFERENCE_MINUEND_PLACES=96, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=82, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=68, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=509, PETRI_PLACES=120, PETRI_TRANSITIONS=90} [2022-01-19 11:20:06,744 INFO L334 CegarLoopForPetriNet]: 83 programPoint places, 37 predicate places. [2022-01-19 11:20:06,745 INFO L470 AbstractCegarLoop]: Abstraction has has 120 places, 90 transitions, 509 flow [2022-01-19 11:20:06,745 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 70.14285714285714) internal successors, (491), 7 states have internal predecessors, (491), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 11:20:06,745 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 11:20:06,745 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] [2022-01-19 11:20:06,746 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-01-19 11:20:06,748 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-19 11:20:06,750 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 11:20:06,751 INFO L85 PathProgramCache]: Analyzing trace with hash -1575136692, now seen corresponding path program 1 times [2022-01-19 11:20:06,751 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 11:20:06,751 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1531616248] [2022-01-19 11:20:06,751 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 11:20:06,751 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 11:20:06,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 11:20:06,868 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 11:20:06,868 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 11:20:06,868 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1531616248] [2022-01-19 11:20:06,868 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1531616248] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 11:20:06,868 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 11:20:06,869 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-19 11:20:06,869 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1644706392] [2022-01-19 11:20:06,869 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 11:20:06,869 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-19 11:20:06,870 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 11:20:06,870 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-19 11:20:06,873 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-01-19 11:20:06,874 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 68 out of 91 [2022-01-19 11:20:06,875 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 120 places, 90 transitions, 509 flow. Second operand has 7 states, 7 states have (on average 70.28571428571429) internal successors, (492), 7 states have internal predecessors, (492), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 11:20:06,875 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 11:20:06,875 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 68 of 91 [2022-01-19 11:20:06,875 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 11:20:07,091 INFO L129 PetriNetUnfolder]: 147/524 cut-off events. [2022-01-19 11:20:07,091 INFO L130 PetriNetUnfolder]: For 3798/4740 co-relation queries the response was YES. [2022-01-19 11:20:07,093 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2346 conditions, 524 events. 147/524 cut-off events. For 3798/4740 co-relation queries the response was YES. Maximal size of possible extension queue 37. Compared 2796 event pairs, 3 based on Foata normal form. 14/521 useless extension candidates. Maximal degree in co-relation 2281. Up to 126 conditions per place. [2022-01-19 11:20:07,095 INFO L132 encePairwiseOnDemand]: 80/91 looper letters, 37 selfloop transitions, 20 changer transitions 40/151 dead transitions. [2022-01-19 11:20:07,095 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 123 places, 151 transitions, 1452 flow [2022-01-19 11:20:07,096 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-01-19 11:20:07,096 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2022-01-19 11:20:07,097 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 953 transitions. [2022-01-19 11:20:07,098 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8055790363482671 [2022-01-19 11:20:07,098 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 953 transitions. [2022-01-19 11:20:07,098 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 953 transitions. [2022-01-19 11:20:07,098 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 11:20:07,098 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 953 transitions. [2022-01-19 11:20:07,100 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 73.3076923076923) internal successors, (953), 13 states have internal predecessors, (953), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 11:20:07,101 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 91.0) internal successors, (1274), 14 states have internal predecessors, (1274), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 11:20:07,102 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 91.0) internal successors, (1274), 14 states have internal predecessors, (1274), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 11:20:07,103 INFO L186 Difference]: Start difference. First operand has 120 places, 90 transitions, 509 flow. Second operand 13 states and 953 transitions. [2022-01-19 11:20:07,103 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 123 places, 151 transitions, 1452 flow [2022-01-19 11:20:07,109 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 116 places, 151 transitions, 1376 flow, removed 36 selfloop flow, removed 7 redundant places. [2022-01-19 11:20:07,113 INFO L242 Difference]: Finished difference. Result has 128 places, 100 transitions, 745 flow [2022-01-19 11:20:07,113 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=91, PETRI_DIFFERENCE_MINUEND_FLOW=488, PETRI_DIFFERENCE_MINUEND_PLACES=104, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=90, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=71, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=745, PETRI_PLACES=128, PETRI_TRANSITIONS=100} [2022-01-19 11:20:07,114 INFO L334 CegarLoopForPetriNet]: 83 programPoint places, 45 predicate places. [2022-01-19 11:20:07,114 INFO L470 AbstractCegarLoop]: Abstraction has has 128 places, 100 transitions, 745 flow [2022-01-19 11:20:07,114 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 70.28571428571429) internal successors, (492), 7 states have internal predecessors, (492), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 11:20:07,114 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 11:20:07,115 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] [2022-01-19 11:20:07,115 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-01-19 11:20:07,115 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-19 11:20:07,116 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 11:20:07,116 INFO L85 PathProgramCache]: Analyzing trace with hash -1955633411, now seen corresponding path program 1 times [2022-01-19 11:20:07,116 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 11:20:07,117 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [10159029] [2022-01-19 11:20:07,117 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 11:20:07,117 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 11:20:07,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 11:20:07,223 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 11:20:07,223 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 11:20:07,223 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [10159029] [2022-01-19 11:20:07,223 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [10159029] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 11:20:07,223 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 11:20:07,223 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-19 11:20:07,223 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [258008732] [2022-01-19 11:20:07,223 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 11:20:07,224 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-19 11:20:07,224 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 11:20:07,225 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-19 11:20:07,225 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-01-19 11:20:07,225 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 68 out of 91 [2022-01-19 11:20:07,226 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 128 places, 100 transitions, 745 flow. Second operand has 7 states, 7 states have (on average 70.42857142857143) internal successors, (493), 7 states have internal predecessors, (493), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 11:20:07,226 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 11:20:07,226 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 68 of 91 [2022-01-19 11:20:07,226 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 11:20:07,392 INFO L129 PetriNetUnfolder]: 87/434 cut-off events. [2022-01-19 11:20:07,392 INFO L130 PetriNetUnfolder]: For 3407/3914 co-relation queries the response was YES. [2022-01-19 11:20:07,394 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1962 conditions, 434 events. 87/434 cut-off events. For 3407/3914 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 2287 event pairs, 3 based on Foata normal form. 14/434 useless extension candidates. Maximal degree in co-relation 1890. Up to 89 conditions per place. [2022-01-19 11:20:07,396 INFO L132 encePairwiseOnDemand]: 80/91 looper letters, 30 selfloop transitions, 27 changer transitions 22/133 dead transitions. [2022-01-19 11:20:07,396 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 131 places, 133 transitions, 1298 flow [2022-01-19 11:20:07,396 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-01-19 11:20:07,396 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2022-01-19 11:20:07,398 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 945 transitions. [2022-01-19 11:20:07,398 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7988165680473372 [2022-01-19 11:20:07,398 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 945 transitions. [2022-01-19 11:20:07,398 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 945 transitions. [2022-01-19 11:20:07,399 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 11:20:07,399 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 945 transitions. [2022-01-19 11:20:07,400 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 72.6923076923077) internal successors, (945), 13 states have internal predecessors, (945), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 11:20:07,403 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 91.0) internal successors, (1274), 14 states have internal predecessors, (1274), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 11:20:07,403 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 91.0) internal successors, (1274), 14 states have internal predecessors, (1274), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 11:20:07,403 INFO L186 Difference]: Start difference. First operand has 128 places, 100 transitions, 745 flow. Second operand 13 states and 945 transitions. [2022-01-19 11:20:07,403 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 131 places, 133 transitions, 1298 flow [2022-01-19 11:20:07,410 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 121 places, 133 transitions, 1174 flow, removed 58 selfloop flow, removed 10 redundant places. [2022-01-19 11:20:07,414 INFO L242 Difference]: Finished difference. Result has 132 places, 99 transitions, 773 flow [2022-01-19 11:20:07,414 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=91, PETRI_DIFFERENCE_MINUEND_FLOW=701, PETRI_DIFFERENCE_MINUEND_PLACES=109, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=100, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=73, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=773, PETRI_PLACES=132, PETRI_TRANSITIONS=99} [2022-01-19 11:20:07,416 INFO L334 CegarLoopForPetriNet]: 83 programPoint places, 49 predicate places. [2022-01-19 11:20:07,416 INFO L470 AbstractCegarLoop]: Abstraction has has 132 places, 99 transitions, 773 flow [2022-01-19 11:20:07,416 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 70.42857142857143) internal successors, (493), 7 states have internal predecessors, (493), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 11:20:07,417 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 11:20:07,417 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] [2022-01-19 11:20:07,417 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-01-19 11:20:07,417 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-19 11:20:07,417 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 11:20:07,418 INFO L85 PathProgramCache]: Analyzing trace with hash 1773618994, now seen corresponding path program 1 times [2022-01-19 11:20:07,418 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 11:20:07,418 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1539148334] [2022-01-19 11:20:07,418 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 11:20:07,418 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 11:20:07,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 11:20:07,493 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 11:20:07,494 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 11:20:07,494 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1539148334] [2022-01-19 11:20:07,494 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1539148334] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 11:20:07,494 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 11:20:07,494 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-01-19 11:20:07,494 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1388093344] [2022-01-19 11:20:07,494 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 11:20:07,495 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-19 11:20:07,495 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 11:20:07,495 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-19 11:20:07,495 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-01-19 11:20:07,496 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 74 out of 91 [2022-01-19 11:20:07,497 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 132 places, 99 transitions, 773 flow. Second operand has 6 states, 6 states have (on average 75.66666666666667) internal successors, (454), 6 states have internal predecessors, (454), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 11:20:07,497 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 11:20:07,497 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 74 of 91 [2022-01-19 11:20:07,497 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 11:20:07,733 INFO L129 PetriNetUnfolder]: 710/1806 cut-off events. [2022-01-19 11:20:07,733 INFO L130 PetriNetUnfolder]: For 3654/3962 co-relation queries the response was YES. [2022-01-19 11:20:07,743 INFO L84 FinitePrefix]: Finished finitePrefix Result has 4329 conditions, 1806 events. 710/1806 cut-off events. For 3654/3962 co-relation queries the response was YES. Maximal size of possible extension queue 243. Compared 14897 event pairs, 20 based on Foata normal form. 49/1668 useless extension candidates. Maximal degree in co-relation 4256. Up to 500 conditions per place. [2022-01-19 11:20:07,748 INFO L132 encePairwiseOnDemand]: 81/91 looper letters, 29 selfloop transitions, 17 changer transitions 0/131 dead transitions. [2022-01-19 11:20:07,748 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 132 places, 131 transitions, 933 flow [2022-01-19 11:20:07,749 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-01-19 11:20:07,749 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-01-19 11:20:07,750 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 788 transitions. [2022-01-19 11:20:07,750 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.865934065934066 [2022-01-19 11:20:07,750 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 788 transitions. [2022-01-19 11:20:07,750 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 788 transitions. [2022-01-19 11:20:07,751 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 11:20:07,751 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 788 transitions. [2022-01-19 11:20:07,752 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 78.8) internal successors, (788), 10 states have internal predecessors, (788), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 11:20:07,753 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 91.0) internal successors, (1001), 11 states have internal predecessors, (1001), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 11:20:07,754 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 91.0) internal successors, (1001), 11 states have internal predecessors, (1001), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 11:20:07,754 INFO L186 Difference]: Start difference. First operand has 132 places, 99 transitions, 773 flow. Second operand 10 states and 788 transitions. [2022-01-19 11:20:07,754 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 132 places, 131 transitions, 933 flow [2022-01-19 11:20:07,761 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 120 places, 131 transitions, 879 flow, removed 27 selfloop flow, removed 12 redundant places. [2022-01-19 11:20:07,763 INFO L242 Difference]: Finished difference. Result has 126 places, 114 transitions, 839 flow [2022-01-19 11:20:07,763 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=91, PETRI_DIFFERENCE_MINUEND_FLOW=719, PETRI_DIFFERENCE_MINUEND_PLACES=111, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=99, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=90, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=839, PETRI_PLACES=126, PETRI_TRANSITIONS=114} [2022-01-19 11:20:07,765 INFO L334 CegarLoopForPetriNet]: 83 programPoint places, 43 predicate places. [2022-01-19 11:20:07,765 INFO L470 AbstractCegarLoop]: Abstraction has has 126 places, 114 transitions, 839 flow [2022-01-19 11:20:07,765 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 75.66666666666667) internal successors, (454), 6 states have internal predecessors, (454), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 11:20:07,765 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 11:20:07,765 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] [2022-01-19 11:20:07,765 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-01-19 11:20:07,766 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-19 11:20:07,766 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 11:20:07,766 INFO L85 PathProgramCache]: Analyzing trace with hash 2007309745, now seen corresponding path program 1 times [2022-01-19 11:20:07,766 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 11:20:07,766 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [873703640] [2022-01-19 11:20:07,767 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 11:20:07,767 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 11:20:07,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 11:20:07,860 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 11:20:07,860 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 11:20:07,860 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [873703640] [2022-01-19 11:20:07,861 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [873703640] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 11:20:07,861 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 11:20:07,861 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-19 11:20:07,861 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1584554076] [2022-01-19 11:20:07,864 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 11:20:07,865 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-19 11:20:07,865 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 11:20:07,866 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-19 11:20:07,866 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-01-19 11:20:07,867 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 74 out of 91 [2022-01-19 11:20:07,867 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 126 places, 114 transitions, 839 flow. Second operand has 7 states, 7 states have (on average 75.57142857142857) internal successors, (529), 7 states have internal predecessors, (529), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 11:20:07,868 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 11:20:07,868 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 74 of 91 [2022-01-19 11:20:07,868 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 11:20:08,170 INFO L129 PetriNetUnfolder]: 691/1822 cut-off events. [2022-01-19 11:20:08,170 INFO L130 PetriNetUnfolder]: For 5861/6487 co-relation queries the response was YES. [2022-01-19 11:20:08,181 INFO L84 FinitePrefix]: Finished finitePrefix Result has 6796 conditions, 1822 events. 691/1822 cut-off events. For 5861/6487 co-relation queries the response was YES. Maximal size of possible extension queue 258. Compared 15694 event pairs, 3 based on Foata normal form. 196/1889 useless extension candidates. Maximal degree in co-relation 6726. Up to 698 conditions per place. [2022-01-19 11:20:08,188 INFO L132 encePairwiseOnDemand]: 81/91 looper letters, 26 selfloop transitions, 32 changer transitions 9/152 dead transitions. [2022-01-19 11:20:08,188 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 138 places, 152 transitions, 1209 flow [2022-01-19 11:20:08,188 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-01-19 11:20:08,188 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2022-01-19 11:20:08,190 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1025 transitions. [2022-01-19 11:20:08,190 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8664412510566357 [2022-01-19 11:20:08,190 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 1025 transitions. [2022-01-19 11:20:08,191 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 1025 transitions. [2022-01-19 11:20:08,191 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 11:20:08,191 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 1025 transitions. [2022-01-19 11:20:08,193 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 78.84615384615384) internal successors, (1025), 13 states have internal predecessors, (1025), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 11:20:08,195 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 91.0) internal successors, (1274), 14 states have internal predecessors, (1274), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 11:20:08,195 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 91.0) internal successors, (1274), 14 states have internal predecessors, (1274), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 11:20:08,195 INFO L186 Difference]: Start difference. First operand has 126 places, 114 transitions, 839 flow. Second operand 13 states and 1025 transitions. [2022-01-19 11:20:08,195 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 138 places, 152 transitions, 1209 flow [2022-01-19 11:20:08,213 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 134 places, 152 transitions, 1165 flow, removed 21 selfloop flow, removed 4 redundant places. [2022-01-19 11:20:08,216 INFO L242 Difference]: Finished difference. Result has 138 places, 134 transitions, 1038 flow [2022-01-19 11:20:08,216 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=91, PETRI_DIFFERENCE_MINUEND_FLOW=795, PETRI_DIFFERENCE_MINUEND_PLACES=122, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=114, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=92, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=1038, PETRI_PLACES=138, PETRI_TRANSITIONS=134} [2022-01-19 11:20:08,217 INFO L334 CegarLoopForPetriNet]: 83 programPoint places, 55 predicate places. [2022-01-19 11:20:08,217 INFO L470 AbstractCegarLoop]: Abstraction has has 138 places, 134 transitions, 1038 flow [2022-01-19 11:20:08,217 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 75.57142857142857) internal successors, (529), 7 states have internal predecessors, (529), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 11:20:08,217 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 11:20:08,217 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] [2022-01-19 11:20:08,217 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-01-19 11:20:08,218 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-19 11:20:08,218 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 11:20:08,218 INFO L85 PathProgramCache]: Analyzing trace with hash 198624632, now seen corresponding path program 1 times [2022-01-19 11:20:08,218 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 11:20:08,218 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1078536644] [2022-01-19 11:20:08,218 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 11:20:08,218 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 11:20:08,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 11:20:08,310 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 11:20:08,310 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 11:20:08,311 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1078536644] [2022-01-19 11:20:08,311 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1078536644] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 11:20:08,311 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 11:20:08,311 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-01-19 11:20:08,311 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1841846804] [2022-01-19 11:20:08,311 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 11:20:08,311 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-19 11:20:08,312 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 11:20:08,312 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-19 11:20:08,312 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-01-19 11:20:08,313 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 74 out of 91 [2022-01-19 11:20:08,313 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 138 places, 134 transitions, 1038 flow. Second operand has 8 states, 8 states have (on average 75.5) internal successors, (604), 8 states have internal predecessors, (604), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 11:20:08,314 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 11:20:08,314 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 74 of 91 [2022-01-19 11:20:08,314 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 11:20:08,670 INFO L129 PetriNetUnfolder]: 557/1597 cut-off events. [2022-01-19 11:20:08,670 INFO L130 PetriNetUnfolder]: For 7487/8478 co-relation queries the response was YES. [2022-01-19 11:20:08,680 INFO L84 FinitePrefix]: Finished finitePrefix Result has 6954 conditions, 1597 events. 557/1597 cut-off events. For 7487/8478 co-relation queries the response was YES. Maximal size of possible extension queue 260. Compared 14573 event pairs, 0 based on Foata normal form. 201/1666 useless extension candidates. Maximal degree in co-relation 6881. Up to 558 conditions per place. [2022-01-19 11:20:08,684 INFO L132 encePairwiseOnDemand]: 81/91 looper letters, 19 selfloop transitions, 32 changer transitions 46/163 dead transitions. [2022-01-19 11:20:08,684 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 153 places, 163 transitions, 1380 flow [2022-01-19 11:20:08,684 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-01-19 11:20:08,684 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2022-01-19 11:20:08,686 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 1246 transitions. [2022-01-19 11:20:08,687 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8557692307692307 [2022-01-19 11:20:08,687 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 1246 transitions. [2022-01-19 11:20:08,687 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 1246 transitions. [2022-01-19 11:20:08,688 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 11:20:08,688 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 1246 transitions. [2022-01-19 11:20:08,690 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 77.875) internal successors, (1246), 16 states have internal predecessors, (1246), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 11:20:08,692 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 91.0) internal successors, (1547), 17 states have internal predecessors, (1547), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 11:20:08,693 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 91.0) internal successors, (1547), 17 states have internal predecessors, (1547), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 11:20:08,693 INFO L186 Difference]: Start difference. First operand has 138 places, 134 transitions, 1038 flow. Second operand 16 states and 1246 transitions. [2022-01-19 11:20:08,693 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 153 places, 163 transitions, 1380 flow [2022-01-19 11:20:08,728 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 138 places, 163 transitions, 1144 flow, removed 97 selfloop flow, removed 15 redundant places. [2022-01-19 11:20:08,730 INFO L242 Difference]: Finished difference. Result has 145 places, 111 transitions, 667 flow [2022-01-19 11:20:08,730 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=91, PETRI_DIFFERENCE_MINUEND_FLOW=834, PETRI_DIFFERENCE_MINUEND_PLACES=123, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=134, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=102, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=667, PETRI_PLACES=145, PETRI_TRANSITIONS=111} [2022-01-19 11:20:08,732 INFO L334 CegarLoopForPetriNet]: 83 programPoint places, 62 predicate places. [2022-01-19 11:20:08,732 INFO L470 AbstractCegarLoop]: Abstraction has has 145 places, 111 transitions, 667 flow [2022-01-19 11:20:08,733 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 75.5) internal successors, (604), 8 states have internal predecessors, (604), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 11:20:08,733 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 11:20:08,733 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] [2022-01-19 11:20:08,733 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-01-19 11:20:08,733 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-19 11:20:08,733 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 11:20:08,734 INFO L85 PathProgramCache]: Analyzing trace with hash -1128012569, now seen corresponding path program 1 times [2022-01-19 11:20:08,734 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 11:20:08,734 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [778969970] [2022-01-19 11:20:08,734 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 11:20:08,734 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 11:20:08,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 11:20:08,845 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 11:20:08,845 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 11:20:08,845 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [778969970] [2022-01-19 11:20:08,845 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [778969970] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 11:20:08,845 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 11:20:08,845 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-01-19 11:20:08,845 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2125748067] [2022-01-19 11:20:08,845 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 11:20:08,846 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-19 11:20:08,846 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 11:20:08,846 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-19 11:20:08,846 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2022-01-19 11:20:08,847 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 68 out of 91 [2022-01-19 11:20:08,847 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 145 places, 111 transitions, 667 flow. Second operand has 8 states, 8 states have (on average 70.375) internal successors, (563), 8 states have internal predecessors, (563), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 11:20:08,847 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 11:20:08,847 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 68 of 91 [2022-01-19 11:20:08,847 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 11:20:08,952 INFO L129 PetriNetUnfolder]: 81/484 cut-off events. [2022-01-19 11:20:08,952 INFO L130 PetriNetUnfolder]: For 1023/1041 co-relation queries the response was YES. [2022-01-19 11:20:08,954 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1478 conditions, 484 events. 81/484 cut-off events. For 1023/1041 co-relation queries the response was YES. Maximal size of possible extension queue 64. Compared 3467 event pairs, 0 based on Foata normal form. 1/470 useless extension candidates. Maximal degree in co-relation 1410. Up to 60 conditions per place. [2022-01-19 11:20:08,955 INFO L132 encePairwiseOnDemand]: 80/91 looper letters, 16 selfloop transitions, 8 changer transitions 24/119 dead transitions. [2022-01-19 11:20:08,955 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 150 places, 119 transitions, 796 flow [2022-01-19 11:20:08,955 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-01-19 11:20:08,955 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-01-19 11:20:08,958 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 646 transitions. [2022-01-19 11:20:08,958 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7887667887667887 [2022-01-19 11:20:08,959 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 646 transitions. [2022-01-19 11:20:08,959 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 646 transitions. [2022-01-19 11:20:08,959 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 11:20:08,959 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 646 transitions. [2022-01-19 11:20:08,963 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 71.77777777777777) internal successors, (646), 9 states have internal predecessors, (646), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 11:20:08,965 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 91.0) internal successors, (910), 10 states have internal predecessors, (910), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 11:20:08,965 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 91.0) internal successors, (910), 10 states have internal predecessors, (910), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 11:20:08,966 INFO L186 Difference]: Start difference. First operand has 145 places, 111 transitions, 667 flow. Second operand 9 states and 646 transitions. [2022-01-19 11:20:08,966 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 150 places, 119 transitions, 796 flow [2022-01-19 11:20:08,972 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 133 places, 119 transitions, 680 flow, removed 11 selfloop flow, removed 17 redundant places. [2022-01-19 11:20:08,974 INFO L242 Difference]: Finished difference. Result has 137 places, 95 transitions, 445 flow [2022-01-19 11:20:08,974 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=91, PETRI_DIFFERENCE_MINUEND_FLOW=564, PETRI_DIFFERENCE_MINUEND_PLACES=125, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=111, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=103, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=445, PETRI_PLACES=137, PETRI_TRANSITIONS=95} [2022-01-19 11:20:08,975 INFO L334 CegarLoopForPetriNet]: 83 programPoint places, 54 predicate places. [2022-01-19 11:20:08,975 INFO L470 AbstractCegarLoop]: Abstraction has has 137 places, 95 transitions, 445 flow [2022-01-19 11:20:08,975 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 70.375) internal successors, (563), 8 states have internal predecessors, (563), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 11:20:08,975 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 11:20:08,977 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] [2022-01-19 11:20:08,977 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-01-19 11:20:08,977 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-19 11:20:08,977 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 11:20:08,977 INFO L85 PathProgramCache]: Analyzing trace with hash 1879256327, now seen corresponding path program 2 times [2022-01-19 11:20:08,978 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 11:20:08,978 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [944310363] [2022-01-19 11:20:08,978 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 11:20:08,978 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 11:20:08,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 11:20:09,066 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 11:20:09,066 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 11:20:09,066 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [944310363] [2022-01-19 11:20:09,066 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [944310363] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 11:20:09,066 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 11:20:09,066 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-19 11:20:09,066 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [833330218] [2022-01-19 11:20:09,066 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 11:20:09,067 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-19 11:20:09,067 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 11:20:09,067 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-19 11:20:09,067 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-01-19 11:20:09,068 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 72 out of 91 [2022-01-19 11:20:09,068 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 137 places, 95 transitions, 445 flow. Second operand has 7 states, 7 states have (on average 74.14285714285714) internal successors, (519), 7 states have internal predecessors, (519), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 11:20:09,068 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 11:20:09,068 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 72 of 91 [2022-01-19 11:20:09,068 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 11:20:09,138 INFO L129 PetriNetUnfolder]: 24/233 cut-off events. [2022-01-19 11:20:09,138 INFO L130 PetriNetUnfolder]: For 262/267 co-relation queries the response was YES. [2022-01-19 11:20:09,139 INFO L84 FinitePrefix]: Finished finitePrefix Result has 579 conditions, 233 events. 24/233 cut-off events. For 262/267 co-relation queries the response was YES. Maximal size of possible extension queue 29. Compared 1148 event pairs, 0 based on Foata normal form. 1/225 useless extension candidates. Maximal degree in co-relation 556. Up to 33 conditions per place. [2022-01-19 11:20:09,139 INFO L132 encePairwiseOnDemand]: 84/91 looper letters, 0 selfloop transitions, 0 changer transitions 94/94 dead transitions. [2022-01-19 11:20:09,139 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 131 places, 94 transitions, 479 flow [2022-01-19 11:20:09,139 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-19 11:20:09,139 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-01-19 11:20:09,140 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 521 transitions. [2022-01-19 11:20:09,140 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8178963893249608 [2022-01-19 11:20:09,140 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 521 transitions. [2022-01-19 11:20:09,140 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 521 transitions. [2022-01-19 11:20:09,140 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 11:20:09,140 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 521 transitions. [2022-01-19 11:20:09,141 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 74.42857142857143) internal successors, (521), 7 states have internal predecessors, (521), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 11:20:09,142 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 91.0) internal successors, (728), 8 states have internal predecessors, (728), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 11:20:09,142 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 91.0) internal successors, (728), 8 states have internal predecessors, (728), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 11:20:09,142 INFO L186 Difference]: Start difference. First operand has 137 places, 95 transitions, 445 flow. Second operand 7 states and 521 transitions. [2022-01-19 11:20:09,142 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 131 places, 94 transitions, 479 flow [2022-01-19 11:20:09,144 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 117 places, 94 transitions, 418 flow, removed 10 selfloop flow, removed 14 redundant places. [2022-01-19 11:20:09,144 INFO L242 Difference]: Finished difference. Result has 117 places, 0 transitions, 0 flow [2022-01-19 11:20:09,145 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=91, PETRI_DIFFERENCE_MINUEND_FLOW=378, PETRI_DIFFERENCE_MINUEND_PLACES=111, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=93, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=93, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=0, PETRI_PLACES=117, PETRI_TRANSITIONS=0} [2022-01-19 11:20:09,145 INFO L334 CegarLoopForPetriNet]: 83 programPoint places, 34 predicate places. [2022-01-19 11:20:09,145 INFO L470 AbstractCegarLoop]: Abstraction has has 117 places, 0 transitions, 0 flow [2022-01-19 11:20:09,145 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 74.14285714285714) internal successors, (519), 7 states have internal predecessors, (519), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 11:20:09,147 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (3 of 4 remaining) [2022-01-19 11:20:09,147 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATION (2 of 4 remaining) [2022-01-19 11:20:09,148 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATION (1 of 4 remaining) [2022-01-19 11:20:09,148 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATION (0 of 4 remaining) [2022-01-19 11:20:09,148 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-01-19 11:20:09,150 INFO L732 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 11:20:09,152 INFO L230 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-01-19 11:20:09,152 INFO L180 ceAbstractionStarter]: Computing trace abstraction results [2022-01-19 11:20:09,154 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.01 11:20:09 BasicIcfg [2022-01-19 11:20:09,154 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-01-19 11:20:09,154 INFO L158 Benchmark]: Toolchain (without parser) took 4946.61ms. Allocated memory was 392.2MB in the beginning and 471.9MB in the end (delta: 79.7MB). Free memory was 349.2MB in the beginning and 436.2MB in the end (delta: -87.0MB). There was no memory consumed. Max. memory is 16.0GB. [2022-01-19 11:20:09,154 INFO L158 Benchmark]: CDTParser took 0.13ms. Allocated memory is still 392.2MB. Free memory is still 366.8MB. There was no memory consumed. Max. memory is 16.0GB. [2022-01-19 11:20:09,154 INFO L158 Benchmark]: CACSL2BoogieTranslator took 374.47ms. Allocated memory is still 392.2MB. Free memory was 349.0MB in the beginning and 363.8MB in the end (delta: -14.8MB). Peak memory consumption was 11.0MB. Max. memory is 16.0GB. [2022-01-19 11:20:09,155 INFO L158 Benchmark]: Boogie Procedure Inliner took 45.18ms. Allocated memory is still 392.2MB. Free memory was 363.8MB in the beginning and 361.7MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2022-01-19 11:20:09,155 INFO L158 Benchmark]: Boogie Preprocessor took 31.48ms. Allocated memory is still 392.2MB. Free memory was 361.7MB in the beginning and 360.3MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2022-01-19 11:20:09,155 INFO L158 Benchmark]: RCFGBuilder took 383.51ms. Allocated memory is still 392.2MB. Free memory was 360.3MB in the beginning and 347.7MB in the end (delta: 12.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.0GB. [2022-01-19 11:20:09,155 INFO L158 Benchmark]: TraceAbstraction took 4107.72ms. Allocated memory was 392.2MB in the beginning and 471.9MB in the end (delta: 79.7MB). Free memory was 347.3MB in the beginning and 436.2MB in the end (delta: -88.9MB). There was no memory consumed. Max. memory is 16.0GB. [2022-01-19 11:20:09,156 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.13ms. Allocated memory is still 392.2MB. Free memory is still 366.8MB. There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 374.47ms. Allocated memory is still 392.2MB. Free memory was 349.0MB in the beginning and 363.8MB in the end (delta: -14.8MB). Peak memory consumption was 11.0MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 45.18ms. Allocated memory is still 392.2MB. Free memory was 363.8MB in the beginning and 361.7MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * Boogie Preprocessor took 31.48ms. Allocated memory is still 392.2MB. Free memory was 361.7MB in the beginning and 360.3MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * RCFGBuilder took 383.51ms. Allocated memory is still 392.2MB. Free memory was 360.3MB in the beginning and 347.7MB in the end (delta: 12.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.0GB. * TraceAbstraction took 4107.72ms. Allocated memory was 392.2MB in the beginning and 471.9MB in the end (delta: 79.7MB). Free memory was 347.3MB in the beginning and 436.2MB in the end (delta: -88.9MB). There was no memory consumed. Max. memory is 16.0GB. * 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: 18]: 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, 114 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: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 2.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 386 SdHoareTripleChecker+Valid, 0.4s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 386 mSDsluCounter, 678 SdHoareTripleChecker+Invalid, 0.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 660 mSDsCounter, 111 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 667 IncrementalHoareTripleChecker+Invalid, 778 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 111 mSolverCounterUnsat, 154 mSDtfsCounter, 667 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 139 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 119 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 193 ImplicationChecksByTransitivity, 0.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1038occurred in iteration=7, InterpolantAutomatonStates: 116, 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, 0.2s SatisfiabilityAnalysisTime, 1.0s InterpolantComputationTime, 607 NumberOfCodeBlocks, 607 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 597 ConstructedInterpolants, 0 QuantifiedInterpolants, 2561 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! [2022-01-19 11:20:09,181 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...