/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/safe030_tso.i -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-bf34d27 [2022-01-19 11:21:57,199 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-19 11:21:57,201 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-19 11:21:57,269 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-01-19 11:21:57,270 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-01-19 11:21:57,270 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-01-19 11:21:57,271 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-01-19 11:21:57,272 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-01-19 11:21:57,273 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-01-19 11:21:57,273 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-01-19 11:21:57,274 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-01-19 11:21:57,275 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-01-19 11:21:57,275 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-01-19 11:21:57,275 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-01-19 11:21:57,276 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-01-19 11:21:57,277 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-01-19 11:21:57,277 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-01-19 11:21:57,278 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-01-19 11:21:57,278 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-01-19 11:21:57,282 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-01-19 11:21:57,283 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-01-19 11:21:57,289 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-01-19 11:21:57,289 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-01-19 11:21:57,290 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-01-19 11:21:57,291 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-01-19 11:21:57,291 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-01-19 11:21:57,292 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-01-19 11:21:57,292 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-01-19 11:21:57,292 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-01-19 11:21:57,293 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-01-19 11:21:57,293 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-01-19 11:21:57,293 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-01-19 11:21:57,294 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-01-19 11:21:57,294 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-01-19 11:21:57,295 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-01-19 11:21:57,295 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-01-19 11:21:57,295 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-01-19 11:21:57,296 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-01-19 11:21:57,296 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-19 11:21:57,296 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-19 11:21:57,297 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-19 11:21:57,303 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 11:21:57,327 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-19 11:21:57,327 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-19 11:21:57,328 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-01-19 11:21:57,328 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-01-19 11:21:57,329 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-19 11:21:57,329 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-19 11:21:57,329 INFO L138 SettingsManager]: * Use SBE=true [2022-01-19 11:21:57,329 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-19 11:21:57,329 INFO L138 SettingsManager]: * sizeof long=4 [2022-01-19 11:21:57,329 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-19 11:21:57,330 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-01-19 11:21:57,330 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-19 11:21:57,330 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-19 11:21:57,330 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-19 11:21:57,330 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-19 11:21:57,330 INFO L138 SettingsManager]: * sizeof long double=12 [2022-01-19 11:21:57,330 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-19 11:21:57,330 INFO L138 SettingsManager]: * Use constant arrays=true [2022-01-19 11:21:57,331 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-19 11:21:57,331 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-19 11:21:57,331 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-19 11:21:57,331 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-01-19 11:21:57,331 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-19 11:21:57,331 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-19 11:21:57,331 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-19 11:21:57,331 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-19 11:21:57,331 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-19 11:21:57,331 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-01-19 11:21:57,331 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-01-19 11:21:57,332 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-19 11:21:57,332 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-01-19 11:21:57,332 INFO L138 SettingsManager]: * When to check the insufficient erros location relative to the other error locations=AFTER [2022-01-19 11:21:57,332 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2022-01-19 11:21:57,521 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-19 11:21:57,534 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-19 11:21:57,536 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-19 11:21:57,537 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-19 11:21:57,537 INFO L275 PluginConnector]: CDTParser initialized [2022-01-19 11:21:57,538 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe030_tso.i [2022-01-19 11:21:57,596 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/57e0e3b5f/101b639abea74dcc9f9d72fdea80bab0/FLAGc7fc23126 [2022-01-19 11:21:57,976 INFO L306 CDTParser]: Found 1 translation units. [2022-01-19 11:21:57,977 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe030_tso.i [2022-01-19 11:21:57,990 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/57e0e3b5f/101b639abea74dcc9f9d72fdea80bab0/FLAGc7fc23126 [2022-01-19 11:21:57,998 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/57e0e3b5f/101b639abea74dcc9f9d72fdea80bab0 [2022-01-19 11:21:58,000 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-19 11:21:58,001 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-01-19 11:21:58,002 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-19 11:21:58,002 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-19 11:21:58,013 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-19 11:21:58,014 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.01 11:21:57" (1/1) ... [2022-01-19 11:21:58,014 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3771d3b4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 11:21:58, skipping insertion in model container [2022-01-19 11:21:58,015 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.01 11:21:57" (1/1) ... [2022-01-19 11:21:58,019 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-19 11:21:58,052 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-19 11:21:58,181 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/safe030_tso.i[945,958] [2022-01-19 11:21:58,288 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-19 11:21:58,294 INFO L203 MainTranslator]: Completed pre-run [2022-01-19 11:21:58,303 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/safe030_tso.i[945,958] [2022-01-19 11:21:58,325 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-19 11:21:58,350 INFO L208 MainTranslator]: Completed translation [2022-01-19 11:21:58,350 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 11:21:58 WrapperNode [2022-01-19 11:21:58,350 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-19 11:21:58,351 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-19 11:21:58,351 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-19 11:21:58,351 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-19 11:21:58,355 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 11:21:58" (1/1) ... [2022-01-19 11:21:58,365 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 11:21:58" (1/1) ... [2022-01-19 11:21:58,377 INFO L137 Inliner]: procedures = 176, calls = 53, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 69 [2022-01-19 11:21:58,378 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-19 11:21:58,378 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-19 11:21:58,378 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-19 11:21:58,378 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-19 11:21:58,383 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 11:21:58" (1/1) ... [2022-01-19 11:21:58,383 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 11:21:58" (1/1) ... [2022-01-19 11:21:58,385 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 11:21:58" (1/1) ... [2022-01-19 11:21:58,385 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 11:21:58" (1/1) ... [2022-01-19 11:21:58,389 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 11:21:58" (1/1) ... [2022-01-19 11:21:58,390 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 11:21:58" (1/1) ... [2022-01-19 11:21:58,391 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 11:21:58" (1/1) ... [2022-01-19 11:21:58,393 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-19 11:21:58,393 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-19 11:21:58,393 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-19 11:21:58,393 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-19 11:21:58,394 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 11:21:58" (1/1) ... [2022-01-19 11:21:58,398 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-19 11:21:58,408 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-19 11:21:58,422 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 11:21:58,430 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 11:21:58,451 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-01-19 11:21:58,451 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-01-19 11:21:58,451 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-19 11:21:58,451 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-01-19 11:21:58,451 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-01-19 11:21:58,451 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2022-01-19 11:21:58,451 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2022-01-19 11:21:58,451 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2022-01-19 11:21:58,452 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2022-01-19 11:21:58,452 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2022-01-19 11:21:58,452 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2022-01-19 11:21:58,452 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-01-19 11:21:58,452 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-01-19 11:21:58,452 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-19 11:21:58,452 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-19 11:21:58,453 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 11:21:58,515 INFO L234 CfgBuilder]: Building ICFG [2022-01-19 11:21:58,516 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-19 11:21:58,625 INFO L275 CfgBuilder]: Performing block encoding [2022-01-19 11:21:58,630 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-19 11:21:58,630 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-01-19 11:21:58,632 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.01 11:21:58 BoogieIcfgContainer [2022-01-19 11:21:58,632 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-19 11:21:58,633 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-19 11:21:58,633 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-19 11:21:58,635 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-19 11:21:58,635 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.01 11:21:57" (1/3) ... [2022-01-19 11:21:58,636 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@556ccc43 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.01 11:21:58, skipping insertion in model container [2022-01-19 11:21:58,636 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 11:21:58" (2/3) ... [2022-01-19 11:21:58,636 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@556ccc43 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.01 11:21:58, skipping insertion in model container [2022-01-19 11:21:58,636 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.01 11:21:58" (3/3) ... [2022-01-19 11:21:58,637 INFO L111 eAbstractionObserver]: Analyzing ICFG safe030_tso.i [2022-01-19 11:21:58,651 INFO L205 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-19 11:21:58,651 INFO L164 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-01-19 11:21:58,651 INFO L534 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-01-19 11:21:58,695 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 11:21:58,695 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 11:21:58,695 WARN L322 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 11:21:58,695 WARN L322 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 11:21:58,695 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 11:21:58,696 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 11:21:58,696 WARN L322 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 11:21:58,696 WARN L322 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 11:21:58,696 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 11:21:58,696 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 11:21:58,697 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 11:21:58,697 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 11:21:58,697 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 11:21:58,697 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 11:21:58,697 WARN L322 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 11:21:58,697 WARN L322 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 11:21:58,697 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 11:21:58,698 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 11:21:58,698 WARN L322 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 11:21:58,698 WARN L322 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 11:21:58,698 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 11:21:58,698 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 11:21:58,699 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 11:21:58,699 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 11:21:58,699 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 11:21:58,699 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 11:21:58,699 WARN L322 ript$VariableManager]: TermVariabe P2Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 11:21:58,699 WARN L322 ript$VariableManager]: TermVariabe P2Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 11:21:58,699 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 11:21:58,700 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 11:21:58,700 WARN L322 ript$VariableManager]: TermVariabe P2Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 11:21:58,700 WARN L322 ript$VariableManager]: TermVariabe P2Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 11:21:58,700 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 11:21:58,700 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 11:21:58,700 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 11:21:58,701 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 11:21:58,703 WARN L322 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 11:21:58,703 WARN L322 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 11:21:58,703 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 11:21:58,703 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 11:21:58,705 WARN L322 ript$VariableManager]: TermVariabe P2Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 11:21:58,705 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 11:21:58,705 WARN L322 ript$VariableManager]: TermVariabe P2Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 11:21:58,706 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 11:21:58,706 WARN L322 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 11:21:58,707 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 11:21:58,707 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 11:21:58,707 WARN L322 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 11:21:58,720 INFO L148 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-01-19 11:21:58,765 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-19 11:21:58,778 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 11:21:58,778 INFO L340 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2022-01-19 11:21:58,791 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 98 places, 90 transitions, 195 flow [2022-01-19 11:21:58,831 INFO L129 PetriNetUnfolder]: 2/87 cut-off events. [2022-01-19 11:21:58,831 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-01-19 11:21:58,834 INFO L84 FinitePrefix]: Finished finitePrefix Result has 97 conditions, 87 events. 2/87 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 47 event pairs, 0 based on Foata normal form. 0/84 useless extension candidates. Maximal degree in co-relation 68. Up to 2 conditions per place. [2022-01-19 11:21:58,834 INFO L82 GeneralOperation]: Start removeDead. Operand has 98 places, 90 transitions, 195 flow [2022-01-19 11:21:58,838 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 82 places, 73 transitions, 155 flow [2022-01-19 11:21:58,856 INFO L129 PetriNetUnfolder]: 1/72 cut-off events. [2022-01-19 11:21:58,856 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-01-19 11:21:58,857 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 11:21:58,857 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] [2022-01-19 11:21:58,857 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 11:21:58,861 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 11:21:58,861 INFO L85 PathProgramCache]: Analyzing trace with hash -1792320384, now seen corresponding path program 1 times [2022-01-19 11:21:58,866 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 11:21:58,867 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1720224176] [2022-01-19 11:21:58,867 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 11:21:58,868 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 11:21:58,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 11:21:59,221 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 11:21:59,222 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 11:21:59,223 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1720224176] [2022-01-19 11:21:59,223 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1720224176] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 11:21:59,223 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 11:21:59,224 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-19 11:21:59,225 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [707125278] [2022-01-19 11:21:59,226 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 11:21:59,232 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-19 11:21:59,233 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 11:21:59,267 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-19 11:21:59,271 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-01-19 11:21:59,277 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 68 out of 90 [2022-01-19 11:21:59,282 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 73 transitions, 155 flow. Second operand has 7 states, 7 states have (on average 69.71428571428571) internal successors, (488), 7 states have internal predecessors, (488), 0 states have call successors, (0), 0 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 11:21:59,282 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 11:21:59,282 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 68 of 90 [2022-01-19 11:21:59,283 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 11:21:59,626 INFO L129 PetriNetUnfolder]: 578/1358 cut-off events. [2022-01-19 11:21:59,626 INFO L130 PetriNetUnfolder]: For 14/14 co-relation queries the response was YES. [2022-01-19 11:21:59,632 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2326 conditions, 1358 events. 578/1358 cut-off events. For 14/14 co-relation queries the response was YES. Maximal size of possible extension queue 97. Compared 8589 event pairs, 36 based on Foata normal form. 48/1359 useless extension candidates. Maximal degree in co-relation 2291. Up to 283 conditions per place. [2022-01-19 11:21:59,641 INFO L132 encePairwiseOnDemand]: 77/90 looper letters, 25 selfloop transitions, 10 changer transitions 62/151 dead transitions. [2022-01-19 11:21:59,643 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 94 places, 151 transitions, 511 flow [2022-01-19 11:21:59,647 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-01-19 11:21:59,649 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2022-01-19 11:21:59,658 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 987 transitions. [2022-01-19 11:21:59,663 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8435897435897436 [2022-01-19 11:21:59,664 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 987 transitions. [2022-01-19 11:21:59,664 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 987 transitions. [2022-01-19 11:21:59,667 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 11:21:59,668 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 987 transitions. [2022-01-19 11:21:59,673 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 75.92307692307692) internal successors, (987), 13 states have internal predecessors, (987), 0 states have call successors, (0), 0 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 11:21:59,680 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 90.0) internal successors, (1260), 14 states have internal predecessors, (1260), 0 states have call successors, (0), 0 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 11:21:59,681 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 90.0) internal successors, (1260), 14 states have internal predecessors, (1260), 0 states have call successors, (0), 0 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 11:21:59,682 INFO L186 Difference]: Start difference. First operand has 82 places, 73 transitions, 155 flow. Second operand 13 states and 987 transitions. [2022-01-19 11:21:59,683 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 94 places, 151 transitions, 511 flow [2022-01-19 11:21:59,687 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 91 places, 151 transitions, 506 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-01-19 11:21:59,691 INFO L242 Difference]: Finished difference. Result has 103 places, 80 transitions, 264 flow [2022-01-19 11:21:59,692 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=90, PETRI_DIFFERENCE_MINUEND_FLOW=150, PETRI_DIFFERENCE_MINUEND_PLACES=79, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=72, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=64, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=264, PETRI_PLACES=103, PETRI_TRANSITIONS=80} [2022-01-19 11:21:59,695 INFO L334 CegarLoopForPetriNet]: 82 programPoint places, 21 predicate places. [2022-01-19 11:21:59,695 INFO L470 AbstractCegarLoop]: Abstraction has has 103 places, 80 transitions, 264 flow [2022-01-19 11:21:59,696 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 69.71428571428571) internal successors, (488), 7 states have internal predecessors, (488), 0 states have call successors, (0), 0 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 11:21:59,696 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 11:21:59,696 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] [2022-01-19 11:21:59,696 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-01-19 11:21:59,697 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 11:21:59,697 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 11:21:59,697 INFO L85 PathProgramCache]: Analyzing trace with hash -1336318753, now seen corresponding path program 1 times [2022-01-19 11:21:59,698 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 11:21:59,698 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [691616915] [2022-01-19 11:21:59,698 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 11:21:59,698 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 11:21:59,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 11:21:59,827 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 11:21:59,828 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 11:21:59,828 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [691616915] [2022-01-19 11:21:59,828 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [691616915] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 11:21:59,828 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 11:21:59,829 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-19 11:21:59,829 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [496532207] [2022-01-19 11:21:59,829 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 11:21:59,830 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-19 11:21:59,830 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 11:21:59,831 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-19 11:21:59,831 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-01-19 11:21:59,832 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 68 out of 90 [2022-01-19 11:21:59,832 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 103 places, 80 transitions, 264 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 11:21:59,832 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 11:21:59,832 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 68 of 90 [2022-01-19 11:21:59,833 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 11:22:00,067 INFO L129 PetriNetUnfolder]: 401/915 cut-off events. [2022-01-19 11:22:00,068 INFO L130 PetriNetUnfolder]: For 2286/3017 co-relation queries the response was YES. [2022-01-19 11:22:00,072 INFO L84 FinitePrefix]: Finished finitePrefix Result has 3272 conditions, 915 events. 401/915 cut-off events. For 2286/3017 co-relation queries the response was YES. Maximal size of possible extension queue 76. Compared 4948 event pairs, 5 based on Foata normal form. 27/916 useless extension candidates. Maximal degree in co-relation 3224. Up to 282 conditions per place. [2022-01-19 11:22:00,076 INFO L132 encePairwiseOnDemand]: 78/90 looper letters, 31 selfloop transitions, 16 changer transitions 58/159 dead transitions. [2022-01-19 11:22:00,076 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 106 places, 159 transitions, 1040 flow [2022-01-19 11:22:00,076 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-01-19 11:22:00,077 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2022-01-19 11:22:00,078 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 976 transitions. [2022-01-19 11:22:00,078 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8341880341880342 [2022-01-19 11:22:00,078 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 976 transitions. [2022-01-19 11:22:00,079 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 976 transitions. [2022-01-19 11:22:00,079 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 11:22:00,079 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 976 transitions. [2022-01-19 11:22:00,081 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 75.07692307692308) internal successors, (976), 13 states have internal predecessors, (976), 0 states have call successors, (0), 0 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 11:22:00,082 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 90.0) internal successors, (1260), 14 states have internal predecessors, (1260), 0 states have call successors, (0), 0 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 11:22:00,083 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 90.0) internal successors, (1260), 14 states have internal predecessors, (1260), 0 states have call successors, (0), 0 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 11:22:00,083 INFO L186 Difference]: Start difference. First operand has 103 places, 80 transitions, 264 flow. Second operand 13 states and 976 transitions. [2022-01-19 11:22:00,084 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 106 places, 159 transitions, 1040 flow [2022-01-19 11:22:00,093 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 103 places, 159 transitions, 1016 flow, removed 12 selfloop flow, removed 3 redundant places. [2022-01-19 11:22:00,096 INFO L242 Difference]: Finished difference. Result has 115 places, 90 transitions, 452 flow [2022-01-19 11:22:00,096 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=90, PETRI_DIFFERENCE_MINUEND_FLOW=258, PETRI_DIFFERENCE_MINUEND_PLACES=91, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=80, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=66, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=452, PETRI_PLACES=115, PETRI_TRANSITIONS=90} [2022-01-19 11:22:00,096 INFO L334 CegarLoopForPetriNet]: 82 programPoint places, 33 predicate places. [2022-01-19 11:22:00,097 INFO L470 AbstractCegarLoop]: Abstraction has has 115 places, 90 transitions, 452 flow [2022-01-19 11:22:00,097 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 11:22:00,097 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 11:22:00,097 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] [2022-01-19 11:22:00,097 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-01-19 11:22:00,097 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 11:22:00,098 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 11:22:00,098 INFO L85 PathProgramCache]: Analyzing trace with hash 1049044032, now seen corresponding path program 1 times [2022-01-19 11:22:00,098 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 11:22:00,098 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [100691516] [2022-01-19 11:22:00,098 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 11:22:00,098 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 11:22:00,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 11:22:00,236 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 11:22:00,236 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 11:22:00,236 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [100691516] [2022-01-19 11:22:00,236 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [100691516] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 11:22:00,236 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 11:22:00,236 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-19 11:22:00,237 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [25028511] [2022-01-19 11:22:00,237 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 11:22:00,237 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-19 11:22:00,237 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 11:22:00,237 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-19 11:22:00,238 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-01-19 11:22:00,238 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 68 out of 90 [2022-01-19 11:22:00,239 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 115 places, 90 transitions, 452 flow. Second operand has 7 states, 7 states have (on average 70.0) internal successors, (490), 7 states have internal predecessors, (490), 0 states have call successors, (0), 0 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 11:22:00,239 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 11:22:00,239 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 68 of 90 [2022-01-19 11:22:00,239 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 11:22:00,461 INFO L129 PetriNetUnfolder]: 287/827 cut-off events. [2022-01-19 11:22:00,461 INFO L130 PetriNetUnfolder]: For 4416/5230 co-relation queries the response was YES. [2022-01-19 11:22:00,465 INFO L84 FinitePrefix]: Finished finitePrefix Result has 3423 conditions, 827 events. 287/827 cut-off events. For 4416/5230 co-relation queries the response was YES. Maximal size of possible extension queue 66. Compared 5000 event pairs, 9 based on Foata normal form. 17/821 useless extension candidates. Maximal degree in co-relation 3362. Up to 221 conditions per place. [2022-01-19 11:22:00,468 INFO L132 encePairwiseOnDemand]: 79/90 looper letters, 33 selfloop transitions, 21 changer transitions 46/154 dead transitions. [2022-01-19 11:22:00,468 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 118 places, 154 transitions, 1290 flow [2022-01-19 11:22:00,468 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-01-19 11:22:00,468 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2022-01-19 11:22:00,470 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 963 transitions. [2022-01-19 11:22:00,470 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.823076923076923 [2022-01-19 11:22:00,470 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 963 transitions. [2022-01-19 11:22:00,470 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 963 transitions. [2022-01-19 11:22:00,471 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 11:22:00,471 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 963 transitions. [2022-01-19 11:22:00,472 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 74.07692307692308) internal successors, (963), 13 states have internal predecessors, (963), 0 states have call successors, (0), 0 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 11:22:00,474 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 90.0) internal successors, (1260), 14 states have internal predecessors, (1260), 0 states have call successors, (0), 0 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 11:22:00,474 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 90.0) internal successors, (1260), 14 states have internal predecessors, (1260), 0 states have call successors, (0), 0 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 11:22:00,474 INFO L186 Difference]: Start difference. First operand has 115 places, 90 transitions, 452 flow. Second operand 13 states and 963 transitions. [2022-01-19 11:22:00,474 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 118 places, 154 transitions, 1290 flow [2022-01-19 11:22:00,483 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 115 places, 154 transitions, 1236 flow, removed 27 selfloop flow, removed 3 redundant places. [2022-01-19 11:22:00,486 INFO L242 Difference]: Finished difference. Result has 127 places, 99 transitions, 664 flow [2022-01-19 11:22:00,487 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=90, PETRI_DIFFERENCE_MINUEND_FLOW=434, PETRI_DIFFERENCE_MINUEND_PLACES=103, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=90, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=72, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=664, PETRI_PLACES=127, PETRI_TRANSITIONS=99} [2022-01-19 11:22:00,488 INFO L334 CegarLoopForPetriNet]: 82 programPoint places, 45 predicate places. [2022-01-19 11:22:00,488 INFO L470 AbstractCegarLoop]: Abstraction has has 127 places, 99 transitions, 664 flow [2022-01-19 11:22:00,489 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 70.0) internal successors, (490), 7 states have internal predecessors, (490), 0 states have call successors, (0), 0 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 11:22:00,489 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 11:22:00,489 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 11:22:00,490 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-01-19 11:22:00,492 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 11:22:00,495 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 11:22:00,495 INFO L85 PathProgramCache]: Analyzing trace with hash 1441698596, now seen corresponding path program 1 times [2022-01-19 11:22:00,495 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 11:22:00,495 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1295181306] [2022-01-19 11:22:00,495 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 11:22:00,496 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 11:22:00,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 11:22:00,597 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 11:22:00,597 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 11:22:00,597 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1295181306] [2022-01-19 11:22:00,597 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1295181306] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 11:22:00,598 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 11:22:00,598 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-19 11:22:00,598 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1911193650] [2022-01-19 11:22:00,598 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 11:22:00,598 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-19 11:22:00,598 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 11:22:00,599 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-19 11:22:00,599 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-01-19 11:22:00,599 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 68 out of 90 [2022-01-19 11:22:00,600 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 127 places, 99 transitions, 664 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 11:22:00,600 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 11:22:00,600 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 68 of 90 [2022-01-19 11:22:00,600 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 11:22:00,839 INFO L129 PetriNetUnfolder]: 233/808 cut-off events. [2022-01-19 11:22:00,839 INFO L130 PetriNetUnfolder]: For 6771/7053 co-relation queries the response was YES. [2022-01-19 11:22:00,843 INFO L84 FinitePrefix]: Finished finitePrefix Result has 3676 conditions, 808 events. 233/808 cut-off events. For 6771/7053 co-relation queries the response was YES. Maximal size of possible extension queue 61. Compared 5044 event pairs, 7 based on Foata normal form. 24/813 useless extension candidates. Maximal degree in co-relation 3618. Up to 190 conditions per place. [2022-01-19 11:22:00,847 INFO L132 encePairwiseOnDemand]: 79/90 looper letters, 36 selfloop transitions, 26 changer transitions 43/159 dead transitions. [2022-01-19 11:22:00,847 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 130 places, 159 transitions, 1582 flow [2022-01-19 11:22:00,847 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-01-19 11:22:00,847 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2022-01-19 11:22:00,848 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 958 transitions. [2022-01-19 11:22:00,849 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8188034188034188 [2022-01-19 11:22:00,849 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 958 transitions. [2022-01-19 11:22:00,849 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 958 transitions. [2022-01-19 11:22:00,849 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 11:22:00,849 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 958 transitions. [2022-01-19 11:22:00,851 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 73.6923076923077) internal successors, (958), 13 states have internal predecessors, (958), 0 states have call successors, (0), 0 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 11:22:00,852 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 90.0) internal successors, (1260), 14 states have internal predecessors, (1260), 0 states have call successors, (0), 0 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 11:22:00,854 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 90.0) internal successors, (1260), 14 states have internal predecessors, (1260), 0 states have call successors, (0), 0 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 11:22:00,854 INFO L186 Difference]: Start difference. First operand has 127 places, 99 transitions, 664 flow. Second operand 13 states and 958 transitions. [2022-01-19 11:22:00,854 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 130 places, 159 transitions, 1582 flow [2022-01-19 11:22:00,864 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 124 places, 159 transitions, 1496 flow, removed 43 selfloop flow, removed 6 redundant places. [2022-01-19 11:22:00,867 INFO L242 Difference]: Finished difference. Result has 136 places, 102 transitions, 810 flow [2022-01-19 11:22:00,867 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=90, PETRI_DIFFERENCE_MINUEND_FLOW=632, PETRI_DIFFERENCE_MINUEND_PLACES=112, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=99, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=73, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=810, PETRI_PLACES=136, PETRI_TRANSITIONS=102} [2022-01-19 11:22:00,868 INFO L334 CegarLoopForPetriNet]: 82 programPoint places, 54 predicate places. [2022-01-19 11:22:00,868 INFO L470 AbstractCegarLoop]: Abstraction has has 136 places, 102 transitions, 810 flow [2022-01-19 11:22:00,868 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 11:22:00,868 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 11:22:00,868 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 11:22:00,868 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-01-19 11:22:00,869 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 11:22:00,869 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 11:22:00,869 INFO L85 PathProgramCache]: Analyzing trace with hash 1785314262, now seen corresponding path program 1 times [2022-01-19 11:22:00,869 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 11:22:00,869 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [823704350] [2022-01-19 11:22:00,869 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 11:22:00,869 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 11:22:00,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 11:22:00,921 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 11:22:00,922 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 11:22:00,922 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [823704350] [2022-01-19 11:22:00,922 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [823704350] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 11:22:00,922 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 11:22:00,922 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-01-19 11:22:00,922 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [790915713] [2022-01-19 11:22:00,922 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 11:22:00,922 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-19 11:22:00,922 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 11:22:00,923 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-19 11:22:00,923 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-01-19 11:22:00,923 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 74 out of 90 [2022-01-19 11:22:00,924 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 136 places, 102 transitions, 810 flow. Second operand has 6 states, 6 states have (on average 75.83333333333333) internal successors, (455), 6 states have internal predecessors, (455), 0 states have call successors, (0), 0 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 11:22:00,924 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 11:22:00,924 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 74 of 90 [2022-01-19 11:22:00,924 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 11:22:01,045 INFO L129 PetriNetUnfolder]: 133/568 cut-off events. [2022-01-19 11:22:01,046 INFO L130 PetriNetUnfolder]: For 6561/7116 co-relation queries the response was YES. [2022-01-19 11:22:01,048 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2841 conditions, 568 events. 133/568 cut-off events. For 6561/7116 co-relation queries the response was YES. Maximal size of possible extension queue 50. Compared 3523 event pairs, 28 based on Foata normal form. 46/595 useless extension candidates. Maximal degree in co-relation 2763. Up to 132 conditions per place. [2022-01-19 11:22:01,051 INFO L132 encePairwiseOnDemand]: 84/90 looper letters, 18 selfloop transitions, 7 changer transitions 16/120 dead transitions. [2022-01-19 11:22:01,051 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 135 places, 120 transitions, 1084 flow [2022-01-19 11:22:01,051 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-01-19 11:22:01,051 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-01-19 11:22:01,052 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 696 transitions. [2022-01-19 11:22:01,053 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8592592592592593 [2022-01-19 11:22:01,053 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 696 transitions. [2022-01-19 11:22:01,053 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 696 transitions. [2022-01-19 11:22:01,053 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 11:22:01,053 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 696 transitions. [2022-01-19 11:22:01,054 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 77.33333333333333) internal successors, (696), 9 states have internal predecessors, (696), 0 states have call successors, (0), 0 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 11:22:01,055 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 90.0) internal successors, (900), 10 states have internal predecessors, (900), 0 states have call successors, (0), 0 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 11:22:01,056 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 90.0) internal successors, (900), 10 states have internal predecessors, (900), 0 states have call successors, (0), 0 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 11:22:01,056 INFO L186 Difference]: Start difference. First operand has 136 places, 102 transitions, 810 flow. Second operand 9 states and 696 transitions. [2022-01-19 11:22:01,056 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 135 places, 120 transitions, 1084 flow [2022-01-19 11:22:01,065 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 125 places, 120 transitions, 1022 flow, removed 31 selfloop flow, removed 10 redundant places. [2022-01-19 11:22:01,068 INFO L242 Difference]: Finished difference. Result has 132 places, 99 transitions, 773 flow [2022-01-19 11:22:01,068 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=90, PETRI_DIFFERENCE_MINUEND_FLOW=778, PETRI_DIFFERENCE_MINUEND_PLACES=117, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=102, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=95, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=773, PETRI_PLACES=132, PETRI_TRANSITIONS=99} [2022-01-19 11:22:01,070 INFO L334 CegarLoopForPetriNet]: 82 programPoint places, 50 predicate places. [2022-01-19 11:22:01,070 INFO L470 AbstractCegarLoop]: Abstraction has has 132 places, 99 transitions, 773 flow [2022-01-19 11:22:01,071 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 75.83333333333333) internal successors, (455), 6 states have internal predecessors, (455), 0 states have call successors, (0), 0 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 11:22:01,071 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 11:22:01,071 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 11:22:01,071 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-01-19 11:22:01,071 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 11:22:01,072 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 11:22:01,072 INFO L85 PathProgramCache]: Analyzing trace with hash -1189494470, now seen corresponding path program 1 times [2022-01-19 11:22:01,073 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 11:22:01,073 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [509675092] [2022-01-19 11:22:01,073 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 11:22:01,073 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 11:22:01,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 11:22:01,160 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 11:22:01,160 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 11:22:01,161 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [509675092] [2022-01-19 11:22:01,161 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [509675092] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 11:22:01,161 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 11:22:01,161 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-01-19 11:22:01,161 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [816645358] [2022-01-19 11:22:01,161 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 11:22:01,161 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-19 11:22:01,161 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 11:22:01,162 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-19 11:22:01,163 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-01-19 11:22:01,163 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 74 out of 90 [2022-01-19 11:22:01,163 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 132 places, 99 transitions, 773 flow. Second operand has 6 states, 6 states have (on average 75.83333333333333) internal successors, (455), 6 states have internal predecessors, (455), 0 states have call successors, (0), 0 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 11:22:01,163 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 11:22:01,164 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 74 of 90 [2022-01-19 11:22:01,164 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 11:22:01,289 INFO L129 PetriNetUnfolder]: 102/568 cut-off events. [2022-01-19 11:22:01,290 INFO L130 PetriNetUnfolder]: For 6038/6995 co-relation queries the response was YES. [2022-01-19 11:22:01,293 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2833 conditions, 568 events. 102/568 cut-off events. For 6038/6995 co-relation queries the response was YES. Maximal size of possible extension queue 56. Compared 3832 event pairs, 26 based on Foata normal form. 34/586 useless extension candidates. Maximal degree in co-relation 2757. Up to 130 conditions per place. [2022-01-19 11:22:01,295 INFO L132 encePairwiseOnDemand]: 84/90 looper letters, 17 selfloop transitions, 7 changer transitions 16/116 dead transitions. [2022-01-19 11:22:01,295 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 134 places, 116 transitions, 1089 flow [2022-01-19 11:22:01,295 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-01-19 11:22:01,295 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-01-19 11:22:01,297 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 695 transitions. [2022-01-19 11:22:01,297 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8580246913580247 [2022-01-19 11:22:01,297 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 695 transitions. [2022-01-19 11:22:01,297 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 695 transitions. [2022-01-19 11:22:01,297 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 11:22:01,297 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 695 transitions. [2022-01-19 11:22:01,298 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 77.22222222222223) internal successors, (695), 9 states have internal predecessors, (695), 0 states have call successors, (0), 0 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 11:22:01,300 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 90.0) internal successors, (900), 10 states have internal predecessors, (900), 0 states have call successors, (0), 0 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 11:22:01,300 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 90.0) internal successors, (900), 10 states have internal predecessors, (900), 0 states have call successors, (0), 0 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 11:22:01,300 INFO L186 Difference]: Start difference. First operand has 132 places, 99 transitions, 773 flow. Second operand 9 states and 695 transitions. [2022-01-19 11:22:01,300 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 134 places, 116 transitions, 1089 flow [2022-01-19 11:22:01,313 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 125 places, 116 transitions, 994 flow, removed 44 selfloop flow, removed 9 redundant places. [2022-01-19 11:22:01,315 INFO L242 Difference]: Finished difference. Result has 132 places, 96 transitions, 723 flow [2022-01-19 11:22:01,315 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=90, PETRI_DIFFERENCE_MINUEND_FLOW=738, PETRI_DIFFERENCE_MINUEND_PLACES=117, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=99, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=92, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=723, PETRI_PLACES=132, PETRI_TRANSITIONS=96} [2022-01-19 11:22:01,317 INFO L334 CegarLoopForPetriNet]: 82 programPoint places, 50 predicate places. [2022-01-19 11:22:01,317 INFO L470 AbstractCegarLoop]: Abstraction has has 132 places, 96 transitions, 723 flow [2022-01-19 11:22:01,318 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 75.83333333333333) internal successors, (455), 6 states have internal predecessors, (455), 0 states have call successors, (0), 0 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 11:22:01,318 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 11:22:01,318 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] [2022-01-19 11:22:01,318 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-01-19 11:22:01,318 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 11:22:01,319 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 11:22:01,319 INFO L85 PathProgramCache]: Analyzing trace with hash 219533281, now seen corresponding path program 1 times [2022-01-19 11:22:01,319 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 11:22:01,319 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [710196332] [2022-01-19 11:22:01,319 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 11:22:01,319 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 11:22:01,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 11:22:01,406 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 11:22:01,407 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 11:22:01,407 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [710196332] [2022-01-19 11:22:01,407 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [710196332] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 11:22:01,407 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 11:22:01,407 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-01-19 11:22:01,407 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2052827743] [2022-01-19 11:22:01,407 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 11:22:01,407 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-19 11:22:01,407 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 11:22:01,408 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-19 11:22:01,408 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-01-19 11:22:01,408 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 73 out of 90 [2022-01-19 11:22:01,409 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 132 places, 96 transitions, 723 flow. Second operand has 6 states, 6 states have (on average 74.66666666666667) internal successors, (448), 6 states have internal predecessors, (448), 0 states have call successors, (0), 0 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 11:22:01,409 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 11:22:01,409 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 73 of 90 [2022-01-19 11:22:01,409 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 11:22:01,713 INFO L129 PetriNetUnfolder]: 1056/2566 cut-off events. [2022-01-19 11:22:01,713 INFO L130 PetriNetUnfolder]: For 3063/3318 co-relation queries the response was YES. [2022-01-19 11:22:01,722 INFO L84 FinitePrefix]: Finished finitePrefix Result has 5624 conditions, 2566 events. 1056/2566 cut-off events. For 3063/3318 co-relation queries the response was YES. Maximal size of possible extension queue 358. Compared 23200 event pairs, 29 based on Foata normal form. 11/2305 useless extension candidates. Maximal degree in co-relation 5589. Up to 761 conditions per place. [2022-01-19 11:22:01,726 INFO L132 encePairwiseOnDemand]: 80/90 looper letters, 26 selfloop transitions, 17 changer transitions 3/128 dead transitions. [2022-01-19 11:22:01,726 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 135 places, 128 transitions, 883 flow [2022-01-19 11:22:01,726 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-01-19 11:22:01,726 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-01-19 11:22:01,727 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 778 transitions. [2022-01-19 11:22:01,727 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8644444444444445 [2022-01-19 11:22:01,728 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 778 transitions. [2022-01-19 11:22:01,728 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 778 transitions. [2022-01-19 11:22:01,728 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 11:22:01,728 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 778 transitions. [2022-01-19 11:22:01,729 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 77.8) internal successors, (778), 10 states have internal predecessors, (778), 0 states have call successors, (0), 0 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 11:22:01,730 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 90.0) internal successors, (990), 11 states have internal predecessors, (990), 0 states have call successors, (0), 0 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 11:22:01,731 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 90.0) internal successors, (990), 11 states have internal predecessors, (990), 0 states have call successors, (0), 0 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 11:22:01,731 INFO L186 Difference]: Start difference. First operand has 132 places, 96 transitions, 723 flow. Second operand 10 states and 778 transitions. [2022-01-19 11:22:01,731 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 135 places, 128 transitions, 883 flow [2022-01-19 11:22:01,738 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 126 places, 128 transitions, 826 flow, removed 14 selfloop flow, removed 9 redundant places. [2022-01-19 11:22:01,739 INFO L242 Difference]: Finished difference. Result has 132 places, 112 transitions, 786 flow [2022-01-19 11:22:01,740 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=90, PETRI_DIFFERENCE_MINUEND_FLOW=666, PETRI_DIFFERENCE_MINUEND_PLACES=117, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=96, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=87, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=786, PETRI_PLACES=132, PETRI_TRANSITIONS=112} [2022-01-19 11:22:01,740 INFO L334 CegarLoopForPetriNet]: 82 programPoint places, 50 predicate places. [2022-01-19 11:22:01,740 INFO L470 AbstractCegarLoop]: Abstraction has has 132 places, 112 transitions, 786 flow [2022-01-19 11:22:01,740 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 74.66666666666667) internal successors, (448), 6 states have internal predecessors, (448), 0 states have call successors, (0), 0 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 11:22:01,740 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 11:22:01,741 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 11:22:01,741 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-01-19 11:22:01,741 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 11:22:01,741 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 11:22:01,741 INFO L85 PathProgramCache]: Analyzing trace with hash -1636562696, now seen corresponding path program 1 times [2022-01-19 11:22:01,741 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 11:22:01,741 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1731293272] [2022-01-19 11:22:01,741 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 11:22:01,741 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 11:22:01,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 11:22:01,793 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 11:22:01,793 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 11:22:01,793 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1731293272] [2022-01-19 11:22:01,794 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1731293272] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 11:22:01,794 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 11:22:01,794 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-19 11:22:01,794 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1066911741] [2022-01-19 11:22:01,794 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 11:22:01,794 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-19 11:22:01,794 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 11:22:01,794 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-19 11:22:01,795 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-01-19 11:22:01,795 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 73 out of 90 [2022-01-19 11:22:01,795 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 132 places, 112 transitions, 786 flow. Second operand has 7 states, 7 states have (on average 74.57142857142857) internal successors, (522), 7 states have internal predecessors, (522), 0 states have call successors, (0), 0 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 11:22:01,796 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 11:22:01,796 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 73 of 90 [2022-01-19 11:22:01,796 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 11:22:02,118 INFO L129 PetriNetUnfolder]: 916/2498 cut-off events. [2022-01-19 11:22:02,119 INFO L130 PetriNetUnfolder]: For 6120/6937 co-relation queries the response was YES. [2022-01-19 11:22:02,132 INFO L84 FinitePrefix]: Finished finitePrefix Result has 8691 conditions, 2498 events. 916/2498 cut-off events. For 6120/6937 co-relation queries the response was YES. Maximal size of possible extension queue 367. Compared 24405 event pairs, 3 based on Foata normal form. 303/2623 useless extension candidates. Maximal degree in co-relation 8658. Up to 781 conditions per place. [2022-01-19 11:22:02,136 INFO L132 encePairwiseOnDemand]: 80/90 looper letters, 23 selfloop transitions, 28 changer transitions 21/150 dead transitions. [2022-01-19 11:22:02,136 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 144 places, 150 transitions, 1130 flow [2022-01-19 11:22:02,136 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-01-19 11:22:02,136 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2022-01-19 11:22:02,138 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1011 transitions. [2022-01-19 11:22:02,138 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8641025641025641 [2022-01-19 11:22:02,138 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 1011 transitions. [2022-01-19 11:22:02,138 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 1011 transitions. [2022-01-19 11:22:02,138 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 11:22:02,139 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 1011 transitions. [2022-01-19 11:22:02,140 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 77.76923076923077) internal successors, (1011), 13 states have internal predecessors, (1011), 0 states have call successors, (0), 0 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 11:22:02,141 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 90.0) internal successors, (1260), 14 states have internal predecessors, (1260), 0 states have call successors, (0), 0 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 11:22:02,142 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 90.0) internal successors, (1260), 14 states have internal predecessors, (1260), 0 states have call successors, (0), 0 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 11:22:02,142 INFO L186 Difference]: Start difference. First operand has 132 places, 112 transitions, 786 flow. Second operand 13 states and 1011 transitions. [2022-01-19 11:22:02,142 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 144 places, 150 transitions, 1130 flow [2022-01-19 11:22:02,160 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 137 places, 150 transitions, 1064 flow, removed 29 selfloop flow, removed 7 redundant places. [2022-01-19 11:22:02,161 INFO L242 Difference]: Finished difference. Result has 143 places, 120 transitions, 856 flow [2022-01-19 11:22:02,162 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=90, PETRI_DIFFERENCE_MINUEND_FLOW=720, PETRI_DIFFERENCE_MINUEND_PLACES=125, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=112, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=92, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=856, PETRI_PLACES=143, PETRI_TRANSITIONS=120} [2022-01-19 11:22:02,163 INFO L334 CegarLoopForPetriNet]: 82 programPoint places, 61 predicate places. [2022-01-19 11:22:02,163 INFO L470 AbstractCegarLoop]: Abstraction has has 143 places, 120 transitions, 856 flow [2022-01-19 11:22:02,164 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 74.57142857142857) internal successors, (522), 7 states have internal predecessors, (522), 0 states have call successors, (0), 0 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 11:22:02,164 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 11:22:02,164 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] [2022-01-19 11:22:02,164 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-01-19 11:22:02,164 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 11:22:02,164 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 11:22:02,164 INFO L85 PathProgramCache]: Analyzing trace with hash 1059478875, now seen corresponding path program 1 times [2022-01-19 11:22:02,164 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 11:22:02,164 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1409434105] [2022-01-19 11:22:02,165 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 11:22:02,165 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 11:22:02,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 11:22:02,246 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 11:22:02,247 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 11:22:02,247 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1409434105] [2022-01-19 11:22:02,247 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1409434105] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 11:22:02,247 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 11:22:02,247 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-01-19 11:22:02,247 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [524862773] [2022-01-19 11:22:02,247 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 11:22:02,247 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-19 11:22:02,247 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 11:22:02,248 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-19 11:22:02,248 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-01-19 11:22:02,248 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 73 out of 90 [2022-01-19 11:22:02,249 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 143 places, 120 transitions, 856 flow. Second operand has 8 states, 8 states have (on average 74.5) internal successors, (596), 8 states have internal predecessors, (596), 0 states have call successors, (0), 0 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 11:22:02,249 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 11:22:02,249 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 73 of 90 [2022-01-19 11:22:02,249 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 11:22:02,596 INFO L129 PetriNetUnfolder]: 563/1964 cut-off events. [2022-01-19 11:22:02,597 INFO L130 PetriNetUnfolder]: For 8415/9264 co-relation queries the response was YES. [2022-01-19 11:22:02,605 INFO L84 FinitePrefix]: Finished finitePrefix Result has 8500 conditions, 1964 events. 563/1964 cut-off events. For 8415/9264 co-relation queries the response was YES. Maximal size of possible extension queue 310. Compared 20466 event pairs, 2 based on Foata normal form. 263/2088 useless extension candidates. Maximal degree in co-relation 8467. Up to 533 conditions per place. [2022-01-19 11:22:02,607 INFO L132 encePairwiseOnDemand]: 82/90 looper letters, 0 selfloop transitions, 0 changer transitions 132/132 dead transitions. [2022-01-19 11:22:02,607 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 148 places, 132 transitions, 1076 flow [2022-01-19 11:22:02,608 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-01-19 11:22:02,608 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2022-01-19 11:22:02,610 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 1147 transitions. [2022-01-19 11:22:02,611 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8496296296296296 [2022-01-19 11:22:02,611 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 1147 transitions. [2022-01-19 11:22:02,611 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 1147 transitions. [2022-01-19 11:22:02,612 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 11:22:02,612 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 1147 transitions. [2022-01-19 11:22:02,616 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 76.46666666666667) internal successors, (1147), 15 states have internal predecessors, (1147), 0 states have call successors, (0), 0 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 11:22:02,618 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 90.0) internal successors, (1440), 16 states have internal predecessors, (1440), 0 states have call successors, (0), 0 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 11:22:02,618 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 90.0) internal successors, (1440), 16 states have internal predecessors, (1440), 0 states have call successors, (0), 0 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 11:22:02,618 INFO L186 Difference]: Start difference. First operand has 143 places, 120 transitions, 856 flow. Second operand 15 states and 1147 transitions. [2022-01-19 11:22:02,618 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 148 places, 132 transitions, 1076 flow [2022-01-19 11:22:02,667 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 132 places, 132 transitions, 940 flow, removed 39 selfloop flow, removed 16 redundant places. [2022-01-19 11:22:02,668 INFO L242 Difference]: Finished difference. Result has 132 places, 0 transitions, 0 flow [2022-01-19 11:22:02,668 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=90, PETRI_DIFFERENCE_MINUEND_FLOW=707, PETRI_DIFFERENCE_MINUEND_PLACES=118, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=111, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=111, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=0, PETRI_PLACES=132, PETRI_TRANSITIONS=0} [2022-01-19 11:22:02,669 INFO L334 CegarLoopForPetriNet]: 82 programPoint places, 50 predicate places. [2022-01-19 11:22:02,669 INFO L470 AbstractCegarLoop]: Abstraction has has 132 places, 0 transitions, 0 flow [2022-01-19 11:22:02,670 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 74.5) internal successors, (596), 8 states have internal predecessors, (596), 0 states have call successors, (0), 0 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 11:22:02,672 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (3 of 4 remaining) [2022-01-19 11:22:02,672 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATION (2 of 4 remaining) [2022-01-19 11:22:02,672 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATION (1 of 4 remaining) [2022-01-19 11:22:02,672 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATION (0 of 4 remaining) [2022-01-19 11:22:02,672 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-01-19 11:22:02,674 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 11:22:02,676 INFO L230 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-01-19 11:22:02,676 INFO L180 ceAbstractionStarter]: Computing trace abstraction results [2022-01-19 11:22:02,682 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.01 11:22:02 BasicIcfg [2022-01-19 11:22:02,683 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-01-19 11:22:02,683 INFO L158 Benchmark]: Toolchain (without parser) took 4681.96ms. Allocated memory was 360.7MB in the beginning and 492.8MB in the end (delta: 132.1MB). Free memory was 305.7MB in the beginning and 383.7MB in the end (delta: -78.0MB). Peak memory consumption was 55.4MB. Max. memory is 16.0GB. [2022-01-19 11:22:02,683 INFO L158 Benchmark]: CDTParser took 0.09ms. Allocated memory is still 360.7MB. Free memory was 323.3MB in the beginning and 323.2MB in the end (delta: 69.5kB). There was no memory consumed. Max. memory is 16.0GB. [2022-01-19 11:22:02,684 INFO L158 Benchmark]: CACSL2BoogieTranslator took 348.40ms. Allocated memory was 360.7MB in the beginning and 492.8MB in the end (delta: 132.1MB). Free memory was 305.5MB in the beginning and 458.2MB in the end (delta: -152.7MB). Peak memory consumption was 9.3MB. Max. memory is 16.0GB. [2022-01-19 11:22:02,685 INFO L158 Benchmark]: Boogie Procedure Inliner took 26.91ms. Allocated memory is still 492.8MB. Free memory was 458.2MB in the beginning and 456.1MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2022-01-19 11:22:02,685 INFO L158 Benchmark]: Boogie Preprocessor took 14.78ms. Allocated memory is still 492.8MB. Free memory was 456.1MB in the beginning and 455.0MB in the end (delta: 1.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2022-01-19 11:22:02,685 INFO L158 Benchmark]: RCFGBuilder took 238.77ms. Allocated memory is still 492.8MB. Free memory was 455.0MB in the beginning and 439.3MB in the end (delta: 15.7MB). Peak memory consumption was 14.7MB. Max. memory is 16.0GB. [2022-01-19 11:22:02,685 INFO L158 Benchmark]: TraceAbstraction took 4049.52ms. Allocated memory is still 492.8MB. Free memory was 438.3MB in the beginning and 383.7MB in the end (delta: 54.5MB). Peak memory consumption was 55.6MB. Max. memory is 16.0GB. [2022-01-19 11:22:02,687 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.09ms. Allocated memory is still 360.7MB. Free memory was 323.3MB in the beginning and 323.2MB in the end (delta: 69.5kB). There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 348.40ms. Allocated memory was 360.7MB in the beginning and 492.8MB in the end (delta: 132.1MB). Free memory was 305.5MB in the beginning and 458.2MB in the end (delta: -152.7MB). Peak memory consumption was 9.3MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 26.91ms. Allocated memory is still 492.8MB. Free memory was 458.2MB in the beginning and 456.1MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * Boogie Preprocessor took 14.78ms. Allocated memory is still 492.8MB. Free memory was 456.1MB in the beginning and 455.0MB in the end (delta: 1.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * RCFGBuilder took 238.77ms. Allocated memory is still 492.8MB. Free memory was 455.0MB in the beginning and 439.3MB in the end (delta: 15.7MB). Peak memory consumption was 14.7MB. Max. memory is 16.0GB. * TraceAbstraction took 4049.52ms. Allocated memory is still 492.8MB. Free memory was 438.3MB in the beginning and 383.7MB in the end (delta: 54.5MB). Peak memory consumption was 55.6MB. 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, 113 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: 3.9s, OverallIterations: 9, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 2.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 421 SdHoareTripleChecker+Valid, 0.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 421 mSDsluCounter, 654 SdHoareTripleChecker+Invalid, 0.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 616 mSDsCounter, 101 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 547 IncrementalHoareTripleChecker+Invalid, 648 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 101 mSolverCounterUnsat, 161 mSDtfsCounter, 547 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 127 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 109 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 188 ImplicationChecksByTransitivity, 0.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=856occurred in iteration=8, InterpolantAutomatonStates: 108, 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, 0.8s InterpolantComputationTime, 522 NumberOfCodeBlocks, 522 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 513 ConstructedInterpolants, 0 QuantifiedInterpolants, 1905 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 9 InterpolantComputations, 9 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 11:22:02,723 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...