/usr/bin/java -Xmx8000000000 -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.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/weaver/popl20-more-buffer-series2.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-?-0612a5f-m [2022-09-20 21:16:45,213 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-09-20 21:16:45,214 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-09-20 21:16:45,233 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-09-20 21:16:45,234 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-09-20 21:16:45,234 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-09-20 21:16:45,235 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-09-20 21:16:45,237 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-09-20 21:16:45,238 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-09-20 21:16:45,238 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-09-20 21:16:45,239 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-09-20 21:16:45,240 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-09-20 21:16:45,240 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-09-20 21:16:45,241 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-09-20 21:16:45,241 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-09-20 21:16:45,242 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-09-20 21:16:45,242 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-09-20 21:16:45,243 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-09-20 21:16:45,244 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-09-20 21:16:45,245 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-09-20 21:16:45,246 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-09-20 21:16:45,247 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-09-20 21:16:45,248 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-09-20 21:16:45,248 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-09-20 21:16:45,250 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-09-20 21:16:45,251 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-09-20 21:16:45,251 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-09-20 21:16:45,251 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-09-20 21:16:45,252 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-09-20 21:16:45,252 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-09-20 21:16:45,252 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-09-20 21:16:45,253 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-09-20 21:16:45,253 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-09-20 21:16:45,254 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-09-20 21:16:45,255 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-09-20 21:16:45,255 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-09-20 21:16:45,255 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-09-20 21:16:45,255 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-09-20 21:16:45,255 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-09-20 21:16:45,256 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-09-20 21:16:45,256 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-09-20 21:16:45,258 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.epf [2022-09-20 21:16:45,272 INFO L113 SettingsManager]: Loading preferences was successful [2022-09-20 21:16:45,272 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-09-20 21:16:45,273 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-09-20 21:16:45,273 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-09-20 21:16:45,273 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-09-20 21:16:45,273 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-09-20 21:16:45,273 INFO L138 SettingsManager]: * Use SBE=true [2022-09-20 21:16:45,273 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-09-20 21:16:45,273 INFO L138 SettingsManager]: * sizeof long=4 [2022-09-20 21:16:45,274 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-09-20 21:16:45,274 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-09-20 21:16:45,274 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-09-20 21:16:45,274 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-09-20 21:16:45,274 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-09-20 21:16:45,274 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-09-20 21:16:45,274 INFO L138 SettingsManager]: * sizeof long double=12 [2022-09-20 21:16:45,274 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-09-20 21:16:45,274 INFO L138 SettingsManager]: * Use constant arrays=true [2022-09-20 21:16:45,274 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-09-20 21:16:45,274 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-09-20 21:16:45,274 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-09-20 21:16:45,275 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-09-20 21:16:45,275 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-09-20 21:16:45,275 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-09-20 21:16:45,275 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-09-20 21:16:45,275 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-09-20 21:16:45,275 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-09-20 21:16:45,275 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-09-20 21:16:45,275 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-09-20 21:16:45,275 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-09-20 21:16:45,275 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-09-20 21:16:45,275 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2022-09-20 21:16:45,448 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-09-20 21:16:45,472 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-09-20 21:16:45,473 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-09-20 21:16:45,474 INFO L271 PluginConnector]: Initializing CDTParser... [2022-09-20 21:16:45,475 INFO L275 PluginConnector]: CDTParser initialized [2022-09-20 21:16:45,476 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/popl20-more-buffer-series2.wvr.c [2022-09-20 21:16:45,522 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7a1aa4743/023b035edc2742fc8969d1997bba0353/FLAG6d6452532 [2022-09-20 21:16:45,822 INFO L306 CDTParser]: Found 1 translation units. [2022-09-20 21:16:45,822 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-more-buffer-series2.wvr.c [2022-09-20 21:16:45,829 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7a1aa4743/023b035edc2742fc8969d1997bba0353/FLAG6d6452532 [2022-09-20 21:16:46,244 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7a1aa4743/023b035edc2742fc8969d1997bba0353 [2022-09-20 21:16:46,246 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-09-20 21:16:46,247 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-09-20 21:16:46,248 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-09-20 21:16:46,248 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-09-20 21:16:46,249 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-09-20 21:16:46,250 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.09 09:16:46" (1/1) ... [2022-09-20 21:16:46,250 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5d39760c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 09:16:46, skipping insertion in model container [2022-09-20 21:16:46,251 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.09 09:16:46" (1/1) ... [2022-09-20 21:16:46,255 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-09-20 21:16:46,269 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-09-20 21:16:46,430 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-more-buffer-series2.wvr.c[4232,4245] [2022-09-20 21:16:46,435 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-09-20 21:16:46,442 INFO L203 MainTranslator]: Completed pre-run [2022-09-20 21:16:46,473 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-more-buffer-series2.wvr.c[4232,4245] [2022-09-20 21:16:46,476 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-09-20 21:16:46,489 INFO L208 MainTranslator]: Completed translation [2022-09-20 21:16:46,491 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 09:16:46 WrapperNode [2022-09-20 21:16:46,491 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-09-20 21:16:46,492 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-09-20 21:16:46,492 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-09-20 21:16:46,492 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-09-20 21:16:46,497 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 09:16:46" (1/1) ... [2022-09-20 21:16:46,504 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 09:16:46" (1/1) ... [2022-09-20 21:16:46,539 INFO L138 Inliner]: procedures = 27, calls = 83, calls flagged for inlining = 22, calls inlined = 28, statements flattened = 346 [2022-09-20 21:16:46,540 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-09-20 21:16:46,540 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-09-20 21:16:46,540 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-09-20 21:16:46,540 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-09-20 21:16:46,555 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 09:16:46" (1/1) ... [2022-09-20 21:16:46,555 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 09:16:46" (1/1) ... [2022-09-20 21:16:46,570 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 09:16:46" (1/1) ... [2022-09-20 21:16:46,570 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 09:16:46" (1/1) ... [2022-09-20 21:16:46,576 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 09:16:46" (1/1) ... [2022-09-20 21:16:46,609 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 09:16:46" (1/1) ... [2022-09-20 21:16:46,611 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 09:16:46" (1/1) ... [2022-09-20 21:16:46,613 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-09-20 21:16:46,614 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-09-20 21:16:46,614 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-09-20 21:16:46,614 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-09-20 21:16:46,637 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 09:16:46" (1/1) ... [2022-09-20 21:16:46,641 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-09-20 21:16:46,654 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-20 21:16:46,666 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) [2022-09-20 21:16:46,686 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 [2022-09-20 21:16:46,705 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-09-20 21:16:46,706 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-09-20 21:16:46,706 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-09-20 21:16:46,706 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-09-20 21:16:46,706 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-09-20 21:16:46,706 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-09-20 21:16:46,706 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-09-20 21:16:46,707 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-09-20 21:16:46,707 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2022-09-20 21:16:46,707 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2022-09-20 21:16:46,707 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2022-09-20 21:16:46,707 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2022-09-20 21:16:46,707 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-09-20 21:16:46,707 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-09-20 21:16:46,709 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-09-20 21:16:46,710 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-09-20 21:16:46,710 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-09-20 21:16:46,710 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-09-20 21:16:46,711 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-09-20 21:16:46,712 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-09-20 21:16:46,776 INFO L234 CfgBuilder]: Building ICFG [2022-09-20 21:16:46,777 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-09-20 21:16:47,149 INFO L275 CfgBuilder]: Performing block encoding [2022-09-20 21:16:47,261 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-09-20 21:16:47,262 INFO L299 CfgBuilder]: Removed 7 assume(true) statements. [2022-09-20 21:16:47,264 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.09 09:16:47 BoogieIcfgContainer [2022-09-20 21:16:47,264 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-09-20 21:16:47,266 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-09-20 21:16:47,266 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-09-20 21:16:47,269 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-09-20 21:16:47,269 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.09 09:16:46" (1/3) ... [2022-09-20 21:16:47,270 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@13c942f3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.09 09:16:47, skipping insertion in model container [2022-09-20 21:16:47,270 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 09:16:46" (2/3) ... [2022-09-20 21:16:47,271 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@13c942f3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.09 09:16:47, skipping insertion in model container [2022-09-20 21:16:47,271 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.09 09:16:47" (3/3) ... [2022-09-20 21:16:47,275 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-more-buffer-series2.wvr.c [2022-09-20 21:16:47,290 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-09-20 21:16:47,291 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-09-20 21:16:47,291 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-09-20 21:16:47,365 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2022-09-20 21:16:47,418 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 256 places, 265 transitions, 562 flow [2022-09-20 21:16:47,513 INFO L130 PetriNetUnfolder]: 22/261 cut-off events. [2022-09-20 21:16:47,513 INFO L131 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2022-09-20 21:16:47,517 INFO L83 FinitePrefix]: Finished finitePrefix Result has 278 conditions, 261 events. 22/261 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 125 event pairs, 0 based on Foata normal form. 0/238 useless extension candidates. Maximal degree in co-relation 222. Up to 2 conditions per place. [2022-09-20 21:16:47,518 INFO L82 GeneralOperation]: Start removeDead. Operand has 256 places, 265 transitions, 562 flow [2022-09-20 21:16:47,521 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 239 places, 248 transitions, 520 flow [2022-09-20 21:16:47,535 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-09-20 21:16:47,539 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=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, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@17aa86ec, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-09-20 21:16:47,540 INFO L358 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2022-09-20 21:16:47,570 INFO L130 PetriNetUnfolder]: 22/247 cut-off events. [2022-09-20 21:16:47,571 INFO L131 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2022-09-20 21:16:47,571 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-20 21:16:47,572 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-20 21:16:47,572 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-09-20 21:16:47,575 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-20 21:16:47,576 INFO L85 PathProgramCache]: Analyzing trace with hash 1822910558, now seen corresponding path program 1 times [2022-09-20 21:16:47,581 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-20 21:16:47,582 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1682846768] [2022-09-20 21:16:47,582 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-20 21:16:47,582 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-20 21:16:47,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-20 21:16:47,814 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-20 21:16:47,814 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-20 21:16:47,814 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1682846768] [2022-09-20 21:16:47,815 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1682846768] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-20 21:16:47,815 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-20 21:16:47,823 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-09-20 21:16:47,825 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [899079630] [2022-09-20 21:16:47,825 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-20 21:16:47,832 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-09-20 21:16:47,832 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-20 21:16:47,849 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-09-20 21:16:47,850 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-09-20 21:16:47,852 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 237 out of 265 [2022-09-20 21:16:47,854 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 239 places, 248 transitions, 520 flow. Second operand has 2 states, 2 states have (on average 243.0) internal successors, (486), 2 states have internal predecessors, (486), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 21:16:47,855 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-20 21:16:47,855 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 237 of 265 [2022-09-20 21:16:47,855 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-20 21:16:47,992 INFO L130 PetriNetUnfolder]: 124/548 cut-off events. [2022-09-20 21:16:47,992 INFO L131 PetriNetUnfolder]: For 106/107 co-relation queries the response was YES. [2022-09-20 21:16:47,996 INFO L83 FinitePrefix]: Finished finitePrefix Result has 776 conditions, 548 events. 124/548 cut-off events. For 106/107 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 1717 event pairs, 51 based on Foata normal form. 128/613 useless extension candidates. Maximal degree in co-relation 504. Up to 163 conditions per place. [2022-09-20 21:16:47,999 INFO L137 encePairwiseOnDemand]: 250/265 looper letters, 12 selfloop transitions, 0 changer transitions 8/233 dead transitions. [2022-09-20 21:16:48,000 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 240 places, 233 transitions, 514 flow [2022-09-20 21:16:48,001 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-09-20 21:16:48,003 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2022-09-20 21:16:48,011 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 501 transitions. [2022-09-20 21:16:48,014 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.9452830188679245 [2022-09-20 21:16:48,015 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 501 transitions. [2022-09-20 21:16:48,015 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 501 transitions. [2022-09-20 21:16:48,018 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-20 21:16:48,019 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 501 transitions. [2022-09-20 21:16:48,023 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 250.5) internal successors, (501), 2 states have internal predecessors, (501), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 21:16:48,030 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 265.0) internal successors, (795), 3 states have internal predecessors, (795), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 21:16:48,031 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 265.0) internal successors, (795), 3 states have internal predecessors, (795), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 21:16:48,032 INFO L175 Difference]: Start difference. First operand has 239 places, 248 transitions, 520 flow. Second operand 2 states and 501 transitions. [2022-09-20 21:16:48,033 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 240 places, 233 transitions, 514 flow [2022-09-20 21:16:48,037 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 232 places, 233 transitions, 498 flow, removed 0 selfloop flow, removed 8 redundant places. [2022-09-20 21:16:48,041 INFO L231 Difference]: Finished difference. Result has 232 places, 225 transitions, 458 flow [2022-09-20 21:16:48,042 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=265, PETRI_DIFFERENCE_MINUEND_FLOW=474, PETRI_DIFFERENCE_MINUEND_PLACES=231, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=233, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=233, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=458, PETRI_PLACES=232, PETRI_TRANSITIONS=225} [2022-09-20 21:16:48,046 INFO L287 CegarLoopForPetriNet]: 239 programPoint places, -7 predicate places. [2022-09-20 21:16:48,047 INFO L495 AbstractCegarLoop]: Abstraction has has 232 places, 225 transitions, 458 flow [2022-09-20 21:16:48,047 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 243.0) internal successors, (486), 2 states have internal predecessors, (486), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 21:16:48,047 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-20 21:16:48,048 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-20 21:16:48,048 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-09-20 21:16:48,048 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-09-20 21:16:48,049 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-20 21:16:48,049 INFO L85 PathProgramCache]: Analyzing trace with hash -372367834, now seen corresponding path program 1 times [2022-09-20 21:16:48,050 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-20 21:16:48,050 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [214651188] [2022-09-20 21:16:48,050 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-20 21:16:48,050 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-20 21:16:48,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-20 21:16:48,430 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-20 21:16:48,431 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-20 21:16:48,431 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [214651188] [2022-09-20 21:16:48,431 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [214651188] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-20 21:16:48,431 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-20 21:16:48,431 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-09-20 21:16:48,431 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2082941584] [2022-09-20 21:16:48,433 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-20 21:16:48,435 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-09-20 21:16:48,435 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-20 21:16:48,435 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-09-20 21:16:48,436 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-09-20 21:16:48,439 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 196 out of 265 [2022-09-20 21:16:48,440 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 232 places, 225 transitions, 458 flow. Second operand has 5 states, 5 states have (on average 204.2) internal successors, (1021), 5 states have internal predecessors, (1021), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 21:16:48,442 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-20 21:16:48,442 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 196 of 265 [2022-09-20 21:16:48,442 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-20 21:16:48,586 INFO L130 PetriNetUnfolder]: 134/552 cut-off events. [2022-09-20 21:16:48,587 INFO L131 PetriNetUnfolder]: For 31/32 co-relation queries the response was YES. [2022-09-20 21:16:48,589 INFO L83 FinitePrefix]: Finished finitePrefix Result has 778 conditions, 552 events. 134/552 cut-off events. For 31/32 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 1656 event pairs, 14 based on Foata normal form. 1/511 useless extension candidates. Maximal degree in co-relation 775. Up to 133 conditions per place. [2022-09-20 21:16:48,592 INFO L137 encePairwiseOnDemand]: 259/265 looper letters, 50 selfloop transitions, 3 changer transitions 4/237 dead transitions. [2022-09-20 21:16:48,592 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 228 places, 237 transitions, 601 flow [2022-09-20 21:16:48,592 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-09-20 21:16:48,592 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-09-20 21:16:48,594 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1038 transitions. [2022-09-20 21:16:48,595 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.7833962264150943 [2022-09-20 21:16:48,595 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1038 transitions. [2022-09-20 21:16:48,595 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1038 transitions. [2022-09-20 21:16:48,595 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-20 21:16:48,595 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1038 transitions. [2022-09-20 21:16:48,597 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 207.6) internal successors, (1038), 5 states have internal predecessors, (1038), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 21:16:48,600 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 265.0) internal successors, (1590), 6 states have internal predecessors, (1590), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 21:16:48,600 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 265.0) internal successors, (1590), 6 states have internal predecessors, (1590), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 21:16:48,601 INFO L175 Difference]: Start difference. First operand has 232 places, 225 transitions, 458 flow. Second operand 5 states and 1038 transitions. [2022-09-20 21:16:48,601 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 228 places, 237 transitions, 601 flow [2022-09-20 21:16:48,603 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 228 places, 237 transitions, 601 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-09-20 21:16:48,607 INFO L231 Difference]: Finished difference. Result has 231 places, 227 transitions, 481 flow [2022-09-20 21:16:48,608 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=265, PETRI_DIFFERENCE_MINUEND_FLOW=458, PETRI_DIFFERENCE_MINUEND_PLACES=224, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=225, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=222, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=481, PETRI_PLACES=231, PETRI_TRANSITIONS=227} [2022-09-20 21:16:48,608 INFO L287 CegarLoopForPetriNet]: 239 programPoint places, -8 predicate places. [2022-09-20 21:16:48,608 INFO L495 AbstractCegarLoop]: Abstraction has has 231 places, 227 transitions, 481 flow [2022-09-20 21:16:48,609 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 204.2) internal successors, (1021), 5 states have internal predecessors, (1021), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 21:16:48,609 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-20 21:16:48,609 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-20 21:16:48,609 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-09-20 21:16:48,610 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-09-20 21:16:48,611 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-20 21:16:48,611 INFO L85 PathProgramCache]: Analyzing trace with hash 143055603, now seen corresponding path program 1 times [2022-09-20 21:16:48,611 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-20 21:16:48,611 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [940033261] [2022-09-20 21:16:48,611 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-20 21:16:48,612 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-20 21:16:48,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-20 21:16:48,720 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-20 21:16:48,721 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-20 21:16:48,721 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [940033261] [2022-09-20 21:16:48,721 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [940033261] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-20 21:16:48,722 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-20 21:16:48,722 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-09-20 21:16:48,722 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1039515099] [2022-09-20 21:16:48,722 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-20 21:16:48,723 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-09-20 21:16:48,723 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-20 21:16:48,723 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-09-20 21:16:48,723 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-09-20 21:16:48,724 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 231 out of 265 [2022-09-20 21:16:48,724 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 231 places, 227 transitions, 481 flow. Second operand has 3 states, 3 states have (on average 236.0) internal successors, (708), 3 states have internal predecessors, (708), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 21:16:48,725 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-20 21:16:48,725 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 231 of 265 [2022-09-20 21:16:48,725 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-20 21:16:48,819 INFO L130 PetriNetUnfolder]: 208/757 cut-off events. [2022-09-20 21:16:48,820 INFO L131 PetriNetUnfolder]: For 138/140 co-relation queries the response was YES. [2022-09-20 21:16:48,822 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1188 conditions, 757 events. 208/757 cut-off events. For 138/140 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 3000 event pairs, 36 based on Foata normal form. 13/694 useless extension candidates. Maximal degree in co-relation 1181. Up to 207 conditions per place. [2022-09-20 21:16:48,825 INFO L137 encePairwiseOnDemand]: 262/265 looper letters, 30 selfloop transitions, 2 changer transitions 0/239 dead transitions. [2022-09-20 21:16:48,825 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 231 places, 239 transitions, 581 flow [2022-09-20 21:16:48,826 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-09-20 21:16:48,826 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-09-20 21:16:48,827 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 723 transitions. [2022-09-20 21:16:48,827 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.909433962264151 [2022-09-20 21:16:48,827 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 723 transitions. [2022-09-20 21:16:48,827 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 723 transitions. [2022-09-20 21:16:48,828 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-20 21:16:48,828 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 723 transitions. [2022-09-20 21:16:48,829 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 241.0) internal successors, (723), 3 states have internal predecessors, (723), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 21:16:48,830 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 265.0) internal successors, (1060), 4 states have internal predecessors, (1060), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 21:16:48,830 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 265.0) internal successors, (1060), 4 states have internal predecessors, (1060), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 21:16:48,830 INFO L175 Difference]: Start difference. First operand has 231 places, 227 transitions, 481 flow. Second operand 3 states and 723 transitions. [2022-09-20 21:16:48,830 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 231 places, 239 transitions, 581 flow [2022-09-20 21:16:48,832 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 228 places, 239 transitions, 573 flow, removed 2 selfloop flow, removed 3 redundant places. [2022-09-20 21:16:48,834 INFO L231 Difference]: Finished difference. Result has 229 places, 228 transitions, 488 flow [2022-09-20 21:16:48,834 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=265, PETRI_DIFFERENCE_MINUEND_FLOW=474, PETRI_DIFFERENCE_MINUEND_PLACES=226, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=227, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=225, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=488, PETRI_PLACES=229, PETRI_TRANSITIONS=228} [2022-09-20 21:16:48,836 INFO L287 CegarLoopForPetriNet]: 239 programPoint places, -10 predicate places. [2022-09-20 21:16:48,836 INFO L495 AbstractCegarLoop]: Abstraction has has 229 places, 228 transitions, 488 flow [2022-09-20 21:16:48,837 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 236.0) internal successors, (708), 3 states have internal predecessors, (708), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 21:16:48,837 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-20 21:16:48,837 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-20 21:16:48,837 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-09-20 21:16:48,837 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-09-20 21:16:48,838 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-20 21:16:48,838 INFO L85 PathProgramCache]: Analyzing trace with hash 1267494493, now seen corresponding path program 1 times [2022-09-20 21:16:48,838 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-20 21:16:48,838 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2121664569] [2022-09-20 21:16:48,839 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-20 21:16:48,839 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-20 21:16:48,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-20 21:16:48,952 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-20 21:16:48,952 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-20 21:16:48,952 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2121664569] [2022-09-20 21:16:48,953 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2121664569] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-20 21:16:48,953 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-20 21:16:48,953 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-09-20 21:16:48,953 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [707511584] [2022-09-20 21:16:48,953 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-20 21:16:48,954 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-09-20 21:16:48,956 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-20 21:16:48,957 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-09-20 21:16:48,957 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-09-20 21:16:48,957 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 231 out of 265 [2022-09-20 21:16:48,958 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 229 places, 228 transitions, 488 flow. Second operand has 3 states, 3 states have (on average 236.0) internal successors, (708), 3 states have internal predecessors, (708), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 21:16:48,958 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-20 21:16:48,958 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 231 of 265 [2022-09-20 21:16:48,958 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-20 21:16:49,039 INFO L130 PetriNetUnfolder]: 153/696 cut-off events. [2022-09-20 21:16:49,040 INFO L131 PetriNetUnfolder]: For 212/215 co-relation queries the response was YES. [2022-09-20 21:16:49,041 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1092 conditions, 696 events. 153/696 cut-off events. For 212/215 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 2813 event pairs, 27 based on Foata normal form. 12/635 useless extension candidates. Maximal degree in co-relation 1086. Up to 171 conditions per place. [2022-09-20 21:16:49,043 INFO L137 encePairwiseOnDemand]: 262/265 looper letters, 31 selfloop transitions, 2 changer transitions 0/240 dead transitions. [2022-09-20 21:16:49,043 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 231 places, 240 transitions, 597 flow [2022-09-20 21:16:49,044 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-09-20 21:16:49,044 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-09-20 21:16:49,044 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 722 transitions. [2022-09-20 21:16:49,045 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.9081761006289308 [2022-09-20 21:16:49,045 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 722 transitions. [2022-09-20 21:16:49,045 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 722 transitions. [2022-09-20 21:16:49,045 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-20 21:16:49,045 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 722 transitions. [2022-09-20 21:16:49,046 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 240.66666666666666) internal successors, (722), 3 states have internal predecessors, (722), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 21:16:49,048 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 265.0) internal successors, (1060), 4 states have internal predecessors, (1060), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 21:16:49,048 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 265.0) internal successors, (1060), 4 states have internal predecessors, (1060), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 21:16:49,048 INFO L175 Difference]: Start difference. First operand has 229 places, 228 transitions, 488 flow. Second operand 3 states and 722 transitions. [2022-09-20 21:16:49,048 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 231 places, 240 transitions, 597 flow [2022-09-20 21:16:49,050 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 230 places, 240 transitions, 594 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-09-20 21:16:49,053 INFO L231 Difference]: Finished difference. Result has 231 places, 229 transitions, 500 flow [2022-09-20 21:16:49,055 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=265, PETRI_DIFFERENCE_MINUEND_FLOW=486, PETRI_DIFFERENCE_MINUEND_PLACES=228, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=228, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=226, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=500, PETRI_PLACES=231, PETRI_TRANSITIONS=229} [2022-09-20 21:16:49,056 INFO L287 CegarLoopForPetriNet]: 239 programPoint places, -8 predicate places. [2022-09-20 21:16:49,059 INFO L495 AbstractCegarLoop]: Abstraction has has 231 places, 229 transitions, 500 flow [2022-09-20 21:16:49,060 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 236.0) internal successors, (708), 3 states have internal predecessors, (708), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 21:16:49,060 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-20 21:16:49,060 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-20 21:16:49,060 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-09-20 21:16:49,061 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-09-20 21:16:49,061 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-20 21:16:49,061 INFO L85 PathProgramCache]: Analyzing trace with hash 1061679038, now seen corresponding path program 1 times [2022-09-20 21:16:49,061 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-20 21:16:49,062 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [397299494] [2022-09-20 21:16:49,062 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-20 21:16:49,062 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-20 21:16:49,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-20 21:16:49,163 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-20 21:16:49,163 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-20 21:16:49,163 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [397299494] [2022-09-20 21:16:49,163 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [397299494] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-20 21:16:49,163 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-20 21:16:49,163 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-09-20 21:16:49,163 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2056895324] [2022-09-20 21:16:49,164 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-20 21:16:49,164 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-09-20 21:16:49,164 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-20 21:16:49,164 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-09-20 21:16:49,164 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-09-20 21:16:49,165 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 199 out of 265 [2022-09-20 21:16:49,166 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 231 places, 229 transitions, 500 flow. Second operand has 6 states, 6 states have (on average 205.0) internal successors, (1230), 6 states have internal predecessors, (1230), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 21:16:49,166 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-20 21:16:49,166 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 199 of 265 [2022-09-20 21:16:49,167 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-20 21:16:49,337 INFO L130 PetriNetUnfolder]: 109/773 cut-off events. [2022-09-20 21:16:49,337 INFO L131 PetriNetUnfolder]: For 229/230 co-relation queries the response was YES. [2022-09-20 21:16:49,339 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1231 conditions, 773 events. 109/773 cut-off events. For 229/230 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 2948 event pairs, 36 based on Foata normal form. 8/712 useless extension candidates. Maximal degree in co-relation 1224. Up to 167 conditions per place. [2022-09-20 21:16:49,341 INFO L137 encePairwiseOnDemand]: 255/265 looper letters, 84 selfloop transitions, 11 changer transitions 0/270 dead transitions. [2022-09-20 21:16:49,341 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 239 places, 270 transitions, 793 flow [2022-09-20 21:16:49,342 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-09-20 21:16:49,342 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-09-20 21:16:49,344 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1881 transitions. [2022-09-20 21:16:49,344 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.7886792452830189 [2022-09-20 21:16:49,344 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1881 transitions. [2022-09-20 21:16:49,344 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1881 transitions. [2022-09-20 21:16:49,345 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-20 21:16:49,345 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1881 transitions. [2022-09-20 21:16:49,348 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 209.0) internal successors, (1881), 9 states have internal predecessors, (1881), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 21:16:49,351 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 265.0) internal successors, (2650), 10 states have internal predecessors, (2650), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 21:16:49,352 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 265.0) internal successors, (2650), 10 states have internal predecessors, (2650), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 21:16:49,352 INFO L175 Difference]: Start difference. First operand has 231 places, 229 transitions, 500 flow. Second operand 9 states and 1881 transitions. [2022-09-20 21:16:49,352 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 239 places, 270 transitions, 793 flow [2022-09-20 21:16:49,354 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 238 places, 270 transitions, 790 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-09-20 21:16:49,357 INFO L231 Difference]: Finished difference. Result has 240 places, 233 transitions, 540 flow [2022-09-20 21:16:49,357 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=265, PETRI_DIFFERENCE_MINUEND_FLOW=498, PETRI_DIFFERENCE_MINUEND_PLACES=230, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=229, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=220, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=540, PETRI_PLACES=240, PETRI_TRANSITIONS=233} [2022-09-20 21:16:49,359 INFO L287 CegarLoopForPetriNet]: 239 programPoint places, 1 predicate places. [2022-09-20 21:16:49,359 INFO L495 AbstractCegarLoop]: Abstraction has has 240 places, 233 transitions, 540 flow [2022-09-20 21:16:49,359 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 205.0) internal successors, (1230), 6 states have internal predecessors, (1230), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 21:16:49,359 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-20 21:16:49,360 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-20 21:16:49,360 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-09-20 21:16:49,360 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-09-20 21:16:49,360 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-20 21:16:49,361 INFO L85 PathProgramCache]: Analyzing trace with hash 1196663878, now seen corresponding path program 1 times [2022-09-20 21:16:49,361 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-20 21:16:49,361 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1383882174] [2022-09-20 21:16:49,361 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-20 21:16:49,361 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-20 21:16:49,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-20 21:16:49,441 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-09-20 21:16:49,441 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-20 21:16:49,441 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1383882174] [2022-09-20 21:16:49,441 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1383882174] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-20 21:16:49,442 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-20 21:16:49,442 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-09-20 21:16:49,442 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1963597319] [2022-09-20 21:16:49,442 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-20 21:16:49,442 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-09-20 21:16:49,442 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-20 21:16:49,443 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-09-20 21:16:49,443 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-09-20 21:16:49,444 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 199 out of 265 [2022-09-20 21:16:49,445 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 240 places, 233 transitions, 540 flow. Second operand has 6 states, 6 states have (on average 205.0) internal successors, (1230), 6 states have internal predecessors, (1230), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 21:16:49,445 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-20 21:16:49,445 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 199 of 265 [2022-09-20 21:16:49,445 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-20 21:16:49,613 INFO L130 PetriNetUnfolder]: 127/1067 cut-off events. [2022-09-20 21:16:49,614 INFO L131 PetriNetUnfolder]: For 321/323 co-relation queries the response was YES. [2022-09-20 21:16:49,616 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1659 conditions, 1067 events. 127/1067 cut-off events. For 321/323 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 4981 event pairs, 42 based on Foata normal form. 15/997 useless extension candidates. Maximal degree in co-relation 1650. Up to 219 conditions per place. [2022-09-20 21:16:49,619 INFO L137 encePairwiseOnDemand]: 255/265 looper letters, 75 selfloop transitions, 12 changer transitions 0/262 dead transitions. [2022-09-20 21:16:49,619 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 248 places, 262 transitions, 794 flow [2022-09-20 21:16:49,619 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-09-20 21:16:49,619 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-09-20 21:16:49,621 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1869 transitions. [2022-09-20 21:16:49,622 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.7836477987421384 [2022-09-20 21:16:49,622 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1869 transitions. [2022-09-20 21:16:49,622 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1869 transitions. [2022-09-20 21:16:49,622 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-20 21:16:49,623 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1869 transitions. [2022-09-20 21:16:49,625 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 207.66666666666666) internal successors, (1869), 9 states have internal predecessors, (1869), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 21:16:49,627 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 265.0) internal successors, (2650), 10 states have internal predecessors, (2650), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 21:16:49,628 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 265.0) internal successors, (2650), 10 states have internal predecessors, (2650), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 21:16:49,628 INFO L175 Difference]: Start difference. First operand has 240 places, 233 transitions, 540 flow. Second operand 9 states and 1869 transitions. [2022-09-20 21:16:49,628 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 248 places, 262 transitions, 794 flow [2022-09-20 21:16:49,630 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 245 places, 262 transitions, 785 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-09-20 21:16:49,632 INFO L231 Difference]: Finished difference. Result has 247 places, 237 transitions, 575 flow [2022-09-20 21:16:49,632 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=265, PETRI_DIFFERENCE_MINUEND_FLOW=531, PETRI_DIFFERENCE_MINUEND_PLACES=237, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=233, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=223, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=575, PETRI_PLACES=247, PETRI_TRANSITIONS=237} [2022-09-20 21:16:49,633 INFO L287 CegarLoopForPetriNet]: 239 programPoint places, 8 predicate places. [2022-09-20 21:16:49,633 INFO L495 AbstractCegarLoop]: Abstraction has has 247 places, 237 transitions, 575 flow [2022-09-20 21:16:49,634 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 205.0) internal successors, (1230), 6 states have internal predecessors, (1230), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 21:16:49,634 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-20 21:16:49,634 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-20 21:16:49,634 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-09-20 21:16:49,634 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-09-20 21:16:49,634 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-20 21:16:49,634 INFO L85 PathProgramCache]: Analyzing trace with hash 1769428669, now seen corresponding path program 1 times [2022-09-20 21:16:49,634 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-20 21:16:49,635 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [488060393] [2022-09-20 21:16:49,635 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-20 21:16:49,635 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-20 21:16:49,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-20 21:16:49,788 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-09-20 21:16:49,788 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-20 21:16:49,788 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [488060393] [2022-09-20 21:16:49,788 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [488060393] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-20 21:16:49,788 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-20 21:16:49,788 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-09-20 21:16:49,789 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2101340883] [2022-09-20 21:16:49,789 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-20 21:16:49,789 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-09-20 21:16:49,789 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-20 21:16:49,789 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-09-20 21:16:49,789 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2022-09-20 21:16:49,790 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 187 out of 265 [2022-09-20 21:16:49,792 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 247 places, 237 transitions, 575 flow. Second operand has 8 states, 8 states have (on average 193.25) internal successors, (1546), 8 states have internal predecessors, (1546), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 21:16:49,792 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-20 21:16:49,792 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 187 of 265 [2022-09-20 21:16:49,792 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-20 21:16:51,092 INFO L130 PetriNetUnfolder]: 3272/9314 cut-off events. [2022-09-20 21:16:51,092 INFO L131 PetriNetUnfolder]: For 2799/2802 co-relation queries the response was YES. [2022-09-20 21:16:51,111 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16569 conditions, 9314 events. 3272/9314 cut-off events. For 2799/2802 co-relation queries the response was YES. Maximal size of possible extension queue 377. Compared 87771 event pairs, 1597 based on Foata normal form. 0/7843 useless extension candidates. Maximal degree in co-relation 16558. Up to 1850 conditions per place. [2022-09-20 21:16:51,141 INFO L137 encePairwiseOnDemand]: 254/265 looper letters, 117 selfloop transitions, 11 changer transitions 0/291 dead transitions. [2022-09-20 21:16:51,141 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 255 places, 291 transitions, 998 flow [2022-09-20 21:16:51,142 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-09-20 21:16:51,142 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-09-20 21:16:51,144 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1795 transitions. [2022-09-20 21:16:51,145 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.7526205450733753 [2022-09-20 21:16:51,145 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1795 transitions. [2022-09-20 21:16:51,145 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1795 transitions. [2022-09-20 21:16:51,146 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-20 21:16:51,146 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1795 transitions. [2022-09-20 21:16:51,148 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 199.44444444444446) internal successors, (1795), 9 states have internal predecessors, (1795), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 21:16:51,151 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 265.0) internal successors, (2650), 10 states have internal predecessors, (2650), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 21:16:51,151 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 265.0) internal successors, (2650), 10 states have internal predecessors, (2650), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 21:16:51,151 INFO L175 Difference]: Start difference. First operand has 247 places, 237 transitions, 575 flow. Second operand 9 states and 1795 transitions. [2022-09-20 21:16:51,151 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 255 places, 291 transitions, 998 flow [2022-09-20 21:16:51,155 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 252 places, 291 transitions, 987 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-09-20 21:16:51,158 INFO L231 Difference]: Finished difference. Result has 255 places, 240 transitions, 606 flow [2022-09-20 21:16:51,158 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=265, PETRI_DIFFERENCE_MINUEND_FLOW=564, PETRI_DIFFERENCE_MINUEND_PLACES=244, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=237, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=226, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=606, PETRI_PLACES=255, PETRI_TRANSITIONS=240} [2022-09-20 21:16:51,159 INFO L287 CegarLoopForPetriNet]: 239 programPoint places, 16 predicate places. [2022-09-20 21:16:51,159 INFO L495 AbstractCegarLoop]: Abstraction has has 255 places, 240 transitions, 606 flow [2022-09-20 21:16:51,160 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 193.25) internal successors, (1546), 8 states have internal predecessors, (1546), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 21:16:51,160 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-20 21:16:51,160 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-20 21:16:51,160 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-09-20 21:16:51,160 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-09-20 21:16:51,160 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-20 21:16:51,161 INFO L85 PathProgramCache]: Analyzing trace with hash -1731707687, now seen corresponding path program 1 times [2022-09-20 21:16:51,161 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-20 21:16:51,161 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [620543770] [2022-09-20 21:16:51,161 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-20 21:16:51,161 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-20 21:16:51,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-20 21:16:51,297 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-09-20 21:16:51,298 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-20 21:16:51,298 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [620543770] [2022-09-20 21:16:51,298 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [620543770] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-20 21:16:51,298 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-20 21:16:51,298 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-09-20 21:16:51,298 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [847432017] [2022-09-20 21:16:51,298 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-20 21:16:51,299 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-09-20 21:16:51,299 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-20 21:16:51,299 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-09-20 21:16:51,299 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2022-09-20 21:16:51,300 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 187 out of 265 [2022-09-20 21:16:51,301 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 255 places, 240 transitions, 606 flow. Second operand has 8 states, 8 states have (on average 193.25) internal successors, (1546), 8 states have internal predecessors, (1546), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 21:16:51,301 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-20 21:16:51,301 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 187 of 265 [2022-09-20 21:16:51,301 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-20 21:16:52,359 INFO L130 PetriNetUnfolder]: 2420/7206 cut-off events. [2022-09-20 21:16:52,360 INFO L131 PetriNetUnfolder]: For 2888/2926 co-relation queries the response was YES. [2022-09-20 21:16:52,377 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13425 conditions, 7206 events. 2420/7206 cut-off events. For 2888/2926 co-relation queries the response was YES. Maximal size of possible extension queue 250. Compared 63174 event pairs, 1207 based on Foata normal form. 0/6226 useless extension candidates. Maximal degree in co-relation 13411. Up to 1609 conditions per place. [2022-09-20 21:16:52,394 INFO L137 encePairwiseOnDemand]: 254/265 looper letters, 87 selfloop transitions, 9 changer transitions 21/280 dead transitions. [2022-09-20 21:16:52,394 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 263 places, 280 transitions, 960 flow [2022-09-20 21:16:52,395 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-09-20 21:16:52,395 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-09-20 21:16:52,397 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1788 transitions. [2022-09-20 21:16:52,398 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.7496855345911949 [2022-09-20 21:16:52,398 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1788 transitions. [2022-09-20 21:16:52,398 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1788 transitions. [2022-09-20 21:16:52,398 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-20 21:16:52,398 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1788 transitions. [2022-09-20 21:16:52,401 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 198.66666666666666) internal successors, (1788), 9 states have internal predecessors, (1788), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 21:16:52,404 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 265.0) internal successors, (2650), 10 states have internal predecessors, (2650), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 21:16:52,406 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 265.0) internal successors, (2650), 10 states have internal predecessors, (2650), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 21:16:52,406 INFO L175 Difference]: Start difference. First operand has 255 places, 240 transitions, 606 flow. Second operand 9 states and 1788 transitions. [2022-09-20 21:16:52,406 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 263 places, 280 transitions, 960 flow [2022-09-20 21:16:52,410 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 258 places, 280 transitions, 944 flow, removed 0 selfloop flow, removed 5 redundant places. [2022-09-20 21:16:52,413 INFO L231 Difference]: Finished difference. Result has 260 places, 238 transitions, 602 flow [2022-09-20 21:16:52,413 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=265, PETRI_DIFFERENCE_MINUEND_FLOW=592, PETRI_DIFFERENCE_MINUEND_PLACES=250, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=240, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=231, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=602, PETRI_PLACES=260, PETRI_TRANSITIONS=238} [2022-09-20 21:16:52,415 INFO L287 CegarLoopForPetriNet]: 239 programPoint places, 21 predicate places. [2022-09-20 21:16:52,415 INFO L495 AbstractCegarLoop]: Abstraction has has 260 places, 238 transitions, 602 flow [2022-09-20 21:16:52,415 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 193.25) internal successors, (1546), 8 states have internal predecessors, (1546), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 21:16:52,415 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-20 21:16:52,416 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-20 21:16:52,416 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-09-20 21:16:52,416 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-09-20 21:16:52,416 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-20 21:16:52,416 INFO L85 PathProgramCache]: Analyzing trace with hash 250686035, now seen corresponding path program 1 times [2022-09-20 21:16:52,416 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-20 21:16:52,416 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [864589828] [2022-09-20 21:16:52,416 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-20 21:16:52,417 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-20 21:16:52,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-20 21:16:52,638 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-09-20 21:16:52,638 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-20 21:16:52,639 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [864589828] [2022-09-20 21:16:52,639 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [864589828] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-20 21:16:52,639 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-20 21:16:52,639 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-09-20 21:16:52,639 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1125402188] [2022-09-20 21:16:52,639 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-20 21:16:52,639 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-09-20 21:16:52,639 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-20 21:16:52,640 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-09-20 21:16:52,640 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=43, Unknown=0, NotChecked=0, Total=72 [2022-09-20 21:16:52,641 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 187 out of 265 [2022-09-20 21:16:52,642 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 260 places, 238 transitions, 602 flow. Second operand has 9 states, 9 states have (on average 192.88888888888889) internal successors, (1736), 9 states have internal predecessors, (1736), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 21:16:52,642 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-20 21:16:52,642 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 187 of 265 [2022-09-20 21:16:52,642 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-20 21:16:53,265 INFO L130 PetriNetUnfolder]: 1714/4472 cut-off events. [2022-09-20 21:16:53,266 INFO L131 PetriNetUnfolder]: For 2209/2225 co-relation queries the response was YES. [2022-09-20 21:16:53,277 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9168 conditions, 4472 events. 1714/4472 cut-off events. For 2209/2225 co-relation queries the response was YES. Maximal size of possible extension queue 167. Compared 31841 event pairs, 517 based on Foata normal form. 114/4190 useless extension candidates. Maximal degree in co-relation 9152. Up to 1609 conditions per place. [2022-09-20 21:16:53,289 INFO L137 encePairwiseOnDemand]: 257/265 looper letters, 90 selfloop transitions, 8 changer transitions 3/264 dead transitions. [2022-09-20 21:16:53,289 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 263 places, 264 transitions, 896 flow [2022-09-20 21:16:53,289 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-09-20 21:16:53,290 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-09-20 21:16:53,291 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1582 transitions. [2022-09-20 21:16:53,292 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.7462264150943396 [2022-09-20 21:16:53,292 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1582 transitions. [2022-09-20 21:16:53,292 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1582 transitions. [2022-09-20 21:16:53,293 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-20 21:16:53,293 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1582 transitions. [2022-09-20 21:16:53,295 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 197.75) internal successors, (1582), 8 states have internal predecessors, (1582), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 21:16:53,297 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 265.0) internal successors, (2385), 9 states have internal predecessors, (2385), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 21:16:53,298 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 265.0) internal successors, (2385), 9 states have internal predecessors, (2385), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 21:16:53,298 INFO L175 Difference]: Start difference. First operand has 260 places, 238 transitions, 602 flow. Second operand 8 states and 1582 transitions. [2022-09-20 21:16:53,298 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 263 places, 264 transitions, 896 flow [2022-09-20 21:16:53,302 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 253 places, 264 transitions, 866 flow, removed 7 selfloop flow, removed 10 redundant places. [2022-09-20 21:16:53,305 INFO L231 Difference]: Finished difference. Result has 255 places, 236 transitions, 591 flow [2022-09-20 21:16:53,305 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=265, PETRI_DIFFERENCE_MINUEND_FLOW=578, PETRI_DIFFERENCE_MINUEND_PLACES=246, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=238, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=230, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=591, PETRI_PLACES=255, PETRI_TRANSITIONS=236} [2022-09-20 21:16:53,305 INFO L287 CegarLoopForPetriNet]: 239 programPoint places, 16 predicate places. [2022-09-20 21:16:53,306 INFO L495 AbstractCegarLoop]: Abstraction has has 255 places, 236 transitions, 591 flow [2022-09-20 21:16:53,306 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 192.88888888888889) internal successors, (1736), 9 states have internal predecessors, (1736), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 21:16:53,306 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-20 21:16:53,306 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-20 21:16:53,306 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-09-20 21:16:53,307 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-09-20 21:16:53,307 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-20 21:16:53,307 INFO L85 PathProgramCache]: Analyzing trace with hash 1090633725, now seen corresponding path program 1 times [2022-09-20 21:16:53,307 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-20 21:16:53,307 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [894091644] [2022-09-20 21:16:53,307 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-20 21:16:53,307 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-20 21:16:53,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-20 21:16:53,420 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-09-20 21:16:53,421 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-20 21:16:53,421 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [894091644] [2022-09-20 21:16:53,421 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [894091644] provided 0 perfect and 1 imperfect interpolant sequences [2022-09-20 21:16:53,421 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1720542172] [2022-09-20 21:16:53,421 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-20 21:16:53,421 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-20 21:16:53,422 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-20 21:16:53,423 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-09-20 21:16:53,438 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-09-20 21:16:53,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-20 21:16:53,577 INFO L263 TraceCheckSpWp]: Trace formula consists of 533 conjuncts, 12 conjunts are in the unsatisfiable core [2022-09-20 21:16:53,591 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-20 21:16:54,163 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-09-20 21:16:54,164 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-09-20 21:16:54,778 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-09-20 21:16:54,778 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1720542172] provided 1 perfect and 1 imperfect interpolant sequences [2022-09-20 21:16:54,778 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-09-20 21:16:54,779 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [9, 11] total 26 [2022-09-20 21:16:54,779 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [6788055] [2022-09-20 21:16:54,779 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-20 21:16:54,779 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-09-20 21:16:54,779 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-20 21:16:54,780 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-09-20 21:16:54,780 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=130, Invalid=520, Unknown=0, NotChecked=0, Total=650 [2022-09-20 21:16:54,781 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 184 out of 265 [2022-09-20 21:16:54,782 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 255 places, 236 transitions, 591 flow. Second operand has 10 states, 10 states have (on average 189.6) internal successors, (1896), 10 states have internal predecessors, (1896), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 21:16:54,782 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-20 21:16:54,782 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 184 of 265 [2022-09-20 21:16:54,783 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-20 21:16:55,826 INFO L130 PetriNetUnfolder]: 3519/6521 cut-off events. [2022-09-20 21:16:55,826 INFO L131 PetriNetUnfolder]: For 3524/3530 co-relation queries the response was YES. [2022-09-20 21:16:55,846 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14664 conditions, 6521 events. 3519/6521 cut-off events. For 3524/3530 co-relation queries the response was YES. Maximal size of possible extension queue 285. Compared 44189 event pairs, 208 based on Foata normal form. 2/5956 useless extension candidates. Maximal degree in co-relation 14650. Up to 1280 conditions per place. [2022-09-20 21:16:55,868 INFO L137 encePairwiseOnDemand]: 248/265 looper letters, 154 selfloop transitions, 30 changer transitions 0/344 dead transitions. [2022-09-20 21:16:55,868 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 269 places, 344 transitions, 1322 flow [2022-09-20 21:16:55,869 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-09-20 21:16:55,869 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2022-09-20 21:16:55,873 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 3293 transitions. [2022-09-20 21:16:55,874 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.7309655937846837 [2022-09-20 21:16:55,874 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 3293 transitions. [2022-09-20 21:16:55,874 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 3293 transitions. [2022-09-20 21:16:55,876 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-20 21:16:55,876 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 3293 transitions. [2022-09-20 21:16:55,881 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 193.7058823529412) internal successors, (3293), 17 states have internal predecessors, (3293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 21:16:55,885 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 265.0) internal successors, (4770), 18 states have internal predecessors, (4770), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 21:16:55,886 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 265.0) internal successors, (4770), 18 states have internal predecessors, (4770), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 21:16:55,886 INFO L175 Difference]: Start difference. First operand has 255 places, 236 transitions, 591 flow. Second operand 17 states and 3293 transitions. [2022-09-20 21:16:55,886 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 269 places, 344 transitions, 1322 flow [2022-09-20 21:16:55,890 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 260 places, 344 transitions, 1281 flow, removed 4 selfloop flow, removed 9 redundant places. [2022-09-20 21:16:55,893 INFO L231 Difference]: Finished difference. Result has 269 places, 252 transitions, 730 flow [2022-09-20 21:16:55,893 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=265, PETRI_DIFFERENCE_MINUEND_FLOW=565, PETRI_DIFFERENCE_MINUEND_PLACES=244, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=236, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=216, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=730, PETRI_PLACES=269, PETRI_TRANSITIONS=252} [2022-09-20 21:16:55,894 INFO L287 CegarLoopForPetriNet]: 239 programPoint places, 30 predicate places. [2022-09-20 21:16:55,894 INFO L495 AbstractCegarLoop]: Abstraction has has 269 places, 252 transitions, 730 flow [2022-09-20 21:16:55,894 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 189.6) internal successors, (1896), 10 states have internal predecessors, (1896), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 21:16:55,895 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-20 21:16:55,895 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-20 21:16:55,927 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-09-20 21:16:56,112 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-09-20 21:16:56,112 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-09-20 21:16:56,113 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-20 21:16:56,113 INFO L85 PathProgramCache]: Analyzing trace with hash 812758197, now seen corresponding path program 2 times [2022-09-20 21:16:56,113 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-20 21:16:56,113 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [912675027] [2022-09-20 21:16:56,113 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-20 21:16:56,113 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-20 21:16:56,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-20 21:16:56,339 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-09-20 21:16:56,339 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-20 21:16:56,339 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [912675027] [2022-09-20 21:16:56,339 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [912675027] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-20 21:16:56,339 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-20 21:16:56,339 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-09-20 21:16:56,339 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [822326822] [2022-09-20 21:16:56,339 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-20 21:16:56,340 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-09-20 21:16:56,340 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-20 21:16:56,340 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-09-20 21:16:56,340 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2022-09-20 21:16:56,341 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 183 out of 265 [2022-09-20 21:16:56,342 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 269 places, 252 transitions, 730 flow. Second operand has 9 states, 9 states have (on average 189.33333333333334) internal successors, (1704), 9 states have internal predecessors, (1704), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 21:16:56,342 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-20 21:16:56,342 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 183 of 265 [2022-09-20 21:16:56,343 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-20 21:16:57,193 INFO L130 PetriNetUnfolder]: 2909/5964 cut-off events. [2022-09-20 21:16:57,193 INFO L131 PetriNetUnfolder]: For 6930/7028 co-relation queries the response was YES. [2022-09-20 21:16:57,211 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15335 conditions, 5964 events. 2909/5964 cut-off events. For 6930/7028 co-relation queries the response was YES. Maximal size of possible extension queue 271. Compared 41754 event pairs, 591 based on Foata normal form. 33/5548 useless extension candidates. Maximal degree in co-relation 15314. Up to 1823 conditions per place. [2022-09-20 21:16:57,227 INFO L137 encePairwiseOnDemand]: 256/265 looper letters, 114 selfloop transitions, 13 changer transitions 7/302 dead transitions. [2022-09-20 21:16:57,227 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 277 places, 302 transitions, 1221 flow [2022-09-20 21:16:57,227 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-09-20 21:16:57,227 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-09-20 21:16:57,229 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1755 transitions. [2022-09-20 21:16:57,230 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.7358490566037735 [2022-09-20 21:16:57,230 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1755 transitions. [2022-09-20 21:16:57,230 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1755 transitions. [2022-09-20 21:16:57,231 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-20 21:16:57,231 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1755 transitions. [2022-09-20 21:16:57,233 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 195.0) internal successors, (1755), 9 states have internal predecessors, (1755), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 21:16:57,235 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 265.0) internal successors, (2650), 10 states have internal predecessors, (2650), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 21:16:57,236 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 265.0) internal successors, (2650), 10 states have internal predecessors, (2650), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 21:16:57,236 INFO L175 Difference]: Start difference. First operand has 269 places, 252 transitions, 730 flow. Second operand 9 states and 1755 transitions. [2022-09-20 21:16:57,236 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 277 places, 302 transitions, 1221 flow [2022-09-20 21:16:57,245 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 270 places, 302 transitions, 1190 flow, removed 0 selfloop flow, removed 7 redundant places. [2022-09-20 21:16:57,247 INFO L231 Difference]: Finished difference. Result has 273 places, 254 transitions, 767 flow [2022-09-20 21:16:57,248 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=265, PETRI_DIFFERENCE_MINUEND_FLOW=702, PETRI_DIFFERENCE_MINUEND_PLACES=262, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=252, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=242, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=767, PETRI_PLACES=273, PETRI_TRANSITIONS=254} [2022-09-20 21:16:57,248 INFO L287 CegarLoopForPetriNet]: 239 programPoint places, 34 predicate places. [2022-09-20 21:16:57,248 INFO L495 AbstractCegarLoop]: Abstraction has has 273 places, 254 transitions, 767 flow [2022-09-20 21:16:57,249 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 189.33333333333334) internal successors, (1704), 9 states have internal predecessors, (1704), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 21:16:57,249 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-20 21:16:57,249 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-20 21:16:57,249 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-09-20 21:16:57,249 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-09-20 21:16:57,249 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-20 21:16:57,249 INFO L85 PathProgramCache]: Analyzing trace with hash -1756286677, now seen corresponding path program 1 times [2022-09-20 21:16:57,249 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-20 21:16:57,249 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1864230118] [2022-09-20 21:16:57,250 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-20 21:16:57,250 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-20 21:16:57,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-20 21:16:57,325 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-09-20 21:16:57,325 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-20 21:16:57,325 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1864230118] [2022-09-20 21:16:57,325 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1864230118] provided 0 perfect and 1 imperfect interpolant sequences [2022-09-20 21:16:57,325 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1200586037] [2022-09-20 21:16:57,325 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-20 21:16:57,325 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-20 21:16:57,326 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-20 21:16:57,327 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-09-20 21:16:57,356 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-09-20 21:16:57,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-20 21:16:57,475 INFO L263 TraceCheckSpWp]: Trace formula consists of 561 conjuncts, 9 conjunts are in the unsatisfiable core [2022-09-20 21:16:57,479 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-20 21:16:57,675 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-09-20 21:16:57,675 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-09-20 21:16:57,889 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-09-20 21:16:57,889 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1200586037] provided 1 perfect and 1 imperfect interpolant sequences [2022-09-20 21:16:57,889 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-09-20 21:16:57,889 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [5, 6] total 11 [2022-09-20 21:16:57,890 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1374234694] [2022-09-20 21:16:57,890 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-20 21:16:57,890 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-09-20 21:16:57,890 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-20 21:16:57,890 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-09-20 21:16:57,890 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2022-09-20 21:16:57,891 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 221 out of 265 [2022-09-20 21:16:57,892 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 273 places, 254 transitions, 767 flow. Second operand has 7 states, 7 states have (on average 224.57142857142858) internal successors, (1572), 7 states have internal predecessors, (1572), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 21:16:57,892 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-20 21:16:57,892 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 221 of 265 [2022-09-20 21:16:57,892 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-20 21:16:58,580 INFO L130 PetriNetUnfolder]: 2785/6508 cut-off events. [2022-09-20 21:16:58,581 INFO L131 PetriNetUnfolder]: For 7179/7521 co-relation queries the response was YES. [2022-09-20 21:16:58,611 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16311 conditions, 6508 events. 2785/6508 cut-off events. For 7179/7521 co-relation queries the response was YES. Maximal size of possible extension queue 461. Compared 55438 event pairs, 311 based on Foata normal form. 118/6107 useless extension candidates. Maximal degree in co-relation 16286. Up to 1480 conditions per place. [2022-09-20 21:16:58,634 INFO L137 encePairwiseOnDemand]: 254/265 looper letters, 66 selfloop transitions, 25 changer transitions 0/305 dead transitions. [2022-09-20 21:16:58,635 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 277 places, 305 transitions, 1178 flow [2022-09-20 21:16:58,635 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-09-20 21:16:58,635 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-09-20 21:16:58,637 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1615 transitions. [2022-09-20 21:16:58,637 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8706199460916442 [2022-09-20 21:16:58,637 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1615 transitions. [2022-09-20 21:16:58,638 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1615 transitions. [2022-09-20 21:16:58,638 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-20 21:16:58,638 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1615 transitions. [2022-09-20 21:16:58,640 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 230.71428571428572) internal successors, (1615), 7 states have internal predecessors, (1615), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 21:16:58,642 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 265.0) internal successors, (2120), 8 states have internal predecessors, (2120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 21:16:58,642 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 265.0) internal successors, (2120), 8 states have internal predecessors, (2120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 21:16:58,643 INFO L175 Difference]: Start difference. First operand has 273 places, 254 transitions, 767 flow. Second operand 7 states and 1615 transitions. [2022-09-20 21:16:58,643 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 277 places, 305 transitions, 1178 flow [2022-09-20 21:16:58,653 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 269 places, 305 transitions, 1136 flow, removed 10 selfloop flow, removed 8 redundant places. [2022-09-20 21:16:58,655 INFO L231 Difference]: Finished difference. Result has 272 places, 266 transitions, 910 flow [2022-09-20 21:16:58,656 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=265, PETRI_DIFFERENCE_MINUEND_FLOW=732, PETRI_DIFFERENCE_MINUEND_PLACES=263, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=254, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=235, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=910, PETRI_PLACES=272, PETRI_TRANSITIONS=266} [2022-09-20 21:16:58,656 INFO L287 CegarLoopForPetriNet]: 239 programPoint places, 33 predicate places. [2022-09-20 21:16:58,656 INFO L495 AbstractCegarLoop]: Abstraction has has 272 places, 266 transitions, 910 flow [2022-09-20 21:16:58,657 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 224.57142857142858) internal successors, (1572), 7 states have internal predecessors, (1572), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 21:16:58,657 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-20 21:16:58,657 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-20 21:16:58,689 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-09-20 21:16:58,871 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2022-09-20 21:16:58,872 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-09-20 21:16:58,872 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-20 21:16:58,872 INFO L85 PathProgramCache]: Analyzing trace with hash -229458093, now seen corresponding path program 1 times [2022-09-20 21:16:58,872 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-20 21:16:58,872 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [308741865] [2022-09-20 21:16:58,872 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-20 21:16:58,873 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-20 21:16:58,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-20 21:16:58,939 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-09-20 21:16:58,939 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-20 21:16:58,939 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [308741865] [2022-09-20 21:16:58,940 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [308741865] provided 0 perfect and 1 imperfect interpolant sequences [2022-09-20 21:16:58,940 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [536275643] [2022-09-20 21:16:58,940 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-20 21:16:58,940 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-20 21:16:58,940 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-20 21:16:58,956 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-09-20 21:16:58,962 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-09-20 21:16:59,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-20 21:16:59,094 INFO L263 TraceCheckSpWp]: Trace formula consists of 561 conjuncts, 9 conjunts are in the unsatisfiable core [2022-09-20 21:16:59,100 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-20 21:16:59,303 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-09-20 21:16:59,304 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-09-20 21:16:59,304 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [536275643] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-20 21:16:59,304 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-09-20 21:16:59,304 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [5] total 8 [2022-09-20 21:16:59,305 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2024864526] [2022-09-20 21:16:59,306 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-20 21:16:59,306 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-09-20 21:16:59,306 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-20 21:16:59,306 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-09-20 21:16:59,306 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2022-09-20 21:16:59,307 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 221 out of 265 [2022-09-20 21:16:59,308 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 272 places, 266 transitions, 910 flow. Second operand has 6 states, 6 states have (on average 225.16666666666666) internal successors, (1351), 6 states have internal predecessors, (1351), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 21:16:59,308 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-20 21:16:59,308 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 221 of 265 [2022-09-20 21:16:59,308 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-20 21:17:01,443 INFO L130 PetriNetUnfolder]: 7404/16063 cut-off events. [2022-09-20 21:17:01,443 INFO L131 PetriNetUnfolder]: For 35993/37224 co-relation queries the response was YES. [2022-09-20 21:17:01,499 INFO L83 FinitePrefix]: Finished finitePrefix Result has 48700 conditions, 16063 events. 7404/16063 cut-off events. For 35993/37224 co-relation queries the response was YES. Maximal size of possible extension queue 1158. Compared 157888 event pairs, 1025 based on Foata normal form. 160/14963 useless extension candidates. Maximal degree in co-relation 48673. Up to 2878 conditions per place. [2022-09-20 21:17:01,591 INFO L137 encePairwiseOnDemand]: 256/265 looper letters, 146 selfloop transitions, 45 changer transitions 0/405 dead transitions. [2022-09-20 21:17:01,591 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 279 places, 405 transitions, 2312 flow [2022-09-20 21:17:01,591 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-09-20 21:17:01,592 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-09-20 21:17:01,594 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1867 transitions. [2022-09-20 21:17:01,594 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8806603773584906 [2022-09-20 21:17:01,595 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1867 transitions. [2022-09-20 21:17:01,595 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1867 transitions. [2022-09-20 21:17:01,595 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-20 21:17:01,595 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1867 transitions. [2022-09-20 21:17:01,598 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 233.375) internal successors, (1867), 8 states have internal predecessors, (1867), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 21:17:01,600 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 265.0) internal successors, (2385), 9 states have internal predecessors, (2385), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 21:17:01,600 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 265.0) internal successors, (2385), 9 states have internal predecessors, (2385), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 21:17:01,600 INFO L175 Difference]: Start difference. First operand has 272 places, 266 transitions, 910 flow. Second operand 8 states and 1867 transitions. [2022-09-20 21:17:01,600 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 279 places, 405 transitions, 2312 flow [2022-09-20 21:17:01,646 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 276 places, 405 transitions, 2284 flow, removed 4 selfloop flow, removed 3 redundant places. [2022-09-20 21:17:01,649 INFO L231 Difference]: Finished difference. Result has 282 places, 308 transitions, 1469 flow [2022-09-20 21:17:01,649 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=265, PETRI_DIFFERENCE_MINUEND_FLOW=894, PETRI_DIFFERENCE_MINUEND_PLACES=269, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=266, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=245, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1469, PETRI_PLACES=282, PETRI_TRANSITIONS=308} [2022-09-20 21:17:01,650 INFO L287 CegarLoopForPetriNet]: 239 programPoint places, 43 predicate places. [2022-09-20 21:17:01,650 INFO L495 AbstractCegarLoop]: Abstraction has has 282 places, 308 transitions, 1469 flow [2022-09-20 21:17:01,650 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 225.16666666666666) internal successors, (1351), 6 states have internal predecessors, (1351), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 21:17:01,650 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-20 21:17:01,650 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-20 21:17:01,667 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2022-09-20 21:17:01,867 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-20 21:17:01,868 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-09-20 21:17:01,868 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-20 21:17:01,869 INFO L85 PathProgramCache]: Analyzing trace with hash 1848165785, now seen corresponding path program 2 times [2022-09-20 21:17:01,869 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-20 21:17:01,869 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [754487467] [2022-09-20 21:17:01,869 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-20 21:17:01,869 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-20 21:17:01,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-20 21:17:02,053 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-09-20 21:17:02,053 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-20 21:17:02,053 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [754487467] [2022-09-20 21:17:02,053 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [754487467] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-20 21:17:02,053 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-20 21:17:02,053 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-09-20 21:17:02,053 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [238764650] [2022-09-20 21:17:02,053 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-20 21:17:02,054 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-09-20 21:17:02,054 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-20 21:17:02,054 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-09-20 21:17:02,055 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2022-09-20 21:17:02,055 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 183 out of 265 [2022-09-20 21:17:02,056 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 282 places, 308 transitions, 1469 flow. Second operand has 9 states, 9 states have (on average 190.0) internal successors, (1710), 9 states have internal predecessors, (1710), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 21:17:02,056 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-20 21:17:02,056 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 183 of 265 [2022-09-20 21:17:02,056 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-20 21:17:05,524 INFO L130 PetriNetUnfolder]: 11816/22535 cut-off events. [2022-09-20 21:17:05,525 INFO L131 PetriNetUnfolder]: For 104739/105731 co-relation queries the response was YES. [2022-09-20 21:17:05,639 INFO L83 FinitePrefix]: Finished finitePrefix Result has 89497 conditions, 22535 events. 11816/22535 cut-off events. For 104739/105731 co-relation queries the response was YES. Maximal size of possible extension queue 1227. Compared 204422 event pairs, 3327 based on Foata normal form. 610/22403 useless extension candidates. Maximal degree in co-relation 89465. Up to 12013 conditions per place. [2022-09-20 21:17:05,817 INFO L137 encePairwiseOnDemand]: 256/265 looper letters, 224 selfloop transitions, 11 changer transitions 0/405 dead transitions. [2022-09-20 21:17:05,817 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 290 places, 405 transitions, 2951 flow [2022-09-20 21:17:05,817 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-09-20 21:17:05,818 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-09-20 21:17:05,821 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1751 transitions. [2022-09-20 21:17:05,822 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.7341719077568134 [2022-09-20 21:17:05,822 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1751 transitions. [2022-09-20 21:17:05,822 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1751 transitions. [2022-09-20 21:17:05,823 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-20 21:17:05,823 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1751 transitions. [2022-09-20 21:17:05,825 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 194.55555555555554) internal successors, (1751), 9 states have internal predecessors, (1751), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 21:17:05,828 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 265.0) internal successors, (2650), 10 states have internal predecessors, (2650), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 21:17:05,828 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 265.0) internal successors, (2650), 10 states have internal predecessors, (2650), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 21:17:05,828 INFO L175 Difference]: Start difference. First operand has 282 places, 308 transitions, 1469 flow. Second operand 9 states and 1751 transitions. [2022-09-20 21:17:05,828 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 290 places, 405 transitions, 2951 flow [2022-09-20 21:17:05,972 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 289 places, 405 transitions, 2948 flow, removed 1 selfloop flow, removed 1 redundant places. [2022-09-20 21:17:05,976 INFO L231 Difference]: Finished difference. Result has 291 places, 312 transitions, 1533 flow [2022-09-20 21:17:05,976 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=265, PETRI_DIFFERENCE_MINUEND_FLOW=1466, PETRI_DIFFERENCE_MINUEND_PLACES=281, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=308, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=298, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1533, PETRI_PLACES=291, PETRI_TRANSITIONS=312} [2022-09-20 21:17:05,977 INFO L287 CegarLoopForPetriNet]: 239 programPoint places, 52 predicate places. [2022-09-20 21:17:05,977 INFO L495 AbstractCegarLoop]: Abstraction has has 291 places, 312 transitions, 1533 flow [2022-09-20 21:17:05,977 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 190.0) internal successors, (1710), 9 states have internal predecessors, (1710), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 21:17:05,977 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-20 21:17:05,977 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-20 21:17:05,977 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-09-20 21:17:05,977 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-09-20 21:17:05,978 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-20 21:17:05,978 INFO L85 PathProgramCache]: Analyzing trace with hash 15342248, now seen corresponding path program 1 times [2022-09-20 21:17:05,978 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-20 21:17:05,978 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1779488859] [2022-09-20 21:17:05,978 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-20 21:17:05,978 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-20 21:17:06,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-20 21:17:10,034 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-20 21:17:10,034 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-20 21:17:10,035 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1779488859] [2022-09-20 21:17:10,035 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1779488859] provided 0 perfect and 1 imperfect interpolant sequences [2022-09-20 21:17:10,035 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [539379029] [2022-09-20 21:17:10,035 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-20 21:17:10,035 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-20 21:17:10,035 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-20 21:17:10,037 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-09-20 21:17:10,038 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-09-20 21:17:10,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-20 21:17:10,182 INFO L263 TraceCheckSpWp]: Trace formula consists of 587 conjuncts, 123 conjunts are in the unsatisfiable core [2022-09-20 21:17:10,187 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-20 21:17:10,241 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-09-20 21:17:10,298 INFO L356 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-09-20 21:17:10,299 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 12 treesize of output 14 [2022-09-20 21:17:10,369 INFO L356 Elim1Store]: treesize reduction 36, result has 23.4 percent of original size [2022-09-20 21:17:10,369 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 17 treesize of output 22 [2022-09-20 21:17:11,111 INFO L356 Elim1Store]: treesize reduction 78, result has 26.4 percent of original size [2022-09-20 21:17:11,111 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 9 case distinctions, treesize of input 27 treesize of output 45 [2022-09-20 21:17:11,398 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2022-09-20 21:17:12,757 INFO L356 Elim1Store]: treesize reduction 96, result has 27.8 percent of original size [2022-09-20 21:17:12,758 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 11 case distinctions, treesize of input 32 treesize of output 57 [2022-09-20 21:17:13,305 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-09-20 21:17:14,818 INFO L356 Elim1Store]: treesize reduction 40, result has 29.8 percent of original size [2022-09-20 21:17:14,818 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 7 case distinctions, treesize of input 26 treesize of output 32 [2022-09-20 21:17:15,162 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-09-20 21:17:15,851 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-09-20 21:17:16,039 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-09-20 21:17:16,254 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-09-20 21:17:16,404 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-09-20 21:17:17,493 INFO L173 IndexEqualityManager]: detected equality via solver [2022-09-20 21:17:17,494 INFO L173 IndexEqualityManager]: detected equality via solver [2022-09-20 21:17:17,518 INFO L356 Elim1Store]: treesize reduction 107, result has 23.6 percent of original size [2022-09-20 21:17:17,519 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 51 treesize of output 47 [2022-09-20 21:17:17,550 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-20 21:17:17,550 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-09-20 21:17:30,169 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-09-20 21:17:30,170 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 236 treesize of output 176 [2022-09-20 21:17:31,373 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-09-20 21:17:41,050 WARN L233 SmtUtils]: Spent 9.30s on a formula simplification. DAG size of input: 87 DAG size of output: 69 (called from [L 353] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.Elim1Store.elim1) [2022-09-20 21:17:41,051 INFO L356 Elim1Store]: treesize reduction 68, result has 70.3 percent of original size [2022-09-20 21:17:41,138 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 50794996957154 treesize of output 50381853294722 Received shutdown request... [2022-09-20 21:31:21,237 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2022-09-20 21:31:21,237 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2022-09-20 21:31:21,296 WARN L249 SmtUtils]: Removed 1 from assertion stack [2022-09-20 21:31:21,298 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (4 of 5 remaining) [2022-09-20 21:31:21,315 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-09-20 21:31:21,515 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2022-09-20 21:31:21,515 WARN L619 AbstractCegarLoop]: Verification canceled: while CegarLoopForPetriNet was analyzing trace of length 226 with TraceHistMax 1,while TraceCheckSpWp was constructing backward predicates,while PolyPacSimplificationTermWalker was simplifying a ∨-17-3-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-1 term,while PolyPacSimplificationTermWalker was simplifying 2 xjuncts wrt. a ATOM-1 context. [2022-09-20 21:31:21,517 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (3 of 5 remaining) [2022-09-20 21:31:21,517 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 5 remaining) [2022-09-20 21:31:21,517 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 5 remaining) [2022-09-20 21:31:21,517 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 5 remaining) [2022-09-20 21:31:21,517 INFO L444 BasicCegarLoop]: Path program histogram: [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-20 21:31:21,521 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-09-20 21:31:21,521 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-09-20 21:31:21,528 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.09 09:31:21 BasicIcfg [2022-09-20 21:31:21,528 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-09-20 21:31:21,528 INFO L158 Benchmark]: Toolchain (without parser) took 875281.58ms. Allocated memory was 206.6MB in the beginning and 5.3GB in the end (delta: 5.1GB). Free memory was 170.9MB in the beginning and 1.3GB in the end (delta: -1.1GB). Peak memory consumption was 4.1GB. Max. memory is 8.0GB. [2022-09-20 21:31:21,528 INFO L158 Benchmark]: CDTParser took 0.13ms. Allocated memory is still 206.6MB. Free memory is still 160.2MB. There was no memory consumed. Max. memory is 8.0GB. [2022-09-20 21:31:21,529 INFO L158 Benchmark]: CACSL2BoogieTranslator took 243.73ms. Allocated memory is still 206.6MB. Free memory was 170.7MB in the beginning and 173.6MB in the end (delta: -3.0MB). Peak memory consumption was 8.8MB. Max. memory is 8.0GB. [2022-09-20 21:31:21,529 INFO L158 Benchmark]: Boogie Procedure Inliner took 47.94ms. Allocated memory is still 206.6MB. Free memory was 173.6MB in the beginning and 170.8MB in the end (delta: 2.9MB). Peak memory consumption was 3.1MB. Max. memory is 8.0GB. [2022-09-20 21:31:21,529 INFO L158 Benchmark]: Boogie Preprocessor took 72.79ms. Allocated memory is still 206.6MB. Free memory was 170.8MB in the beginning and 168.7MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2022-09-20 21:31:21,529 INFO L158 Benchmark]: RCFGBuilder took 650.66ms. Allocated memory is still 206.6MB. Free memory was 168.4MB in the beginning and 125.1MB in the end (delta: 43.3MB). Peak memory consumption was 43.0MB. Max. memory is 8.0GB. [2022-09-20 21:31:21,530 INFO L158 Benchmark]: TraceAbstraction took 874261.55ms. Allocated memory was 206.6MB in the beginning and 5.3GB in the end (delta: 5.1GB). Free memory was 124.4MB in the beginning and 1.3GB in the end (delta: -1.1GB). Peak memory consumption was 4.1GB. Max. memory is 8.0GB. [2022-09-20 21:31:21,532 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.13ms. Allocated memory is still 206.6MB. Free memory is still 160.2MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 243.73ms. Allocated memory is still 206.6MB. Free memory was 170.7MB in the beginning and 173.6MB in the end (delta: -3.0MB). Peak memory consumption was 8.8MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 47.94ms. Allocated memory is still 206.6MB. Free memory was 173.6MB in the beginning and 170.8MB in the end (delta: 2.9MB). Peak memory consumption was 3.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 72.79ms. Allocated memory is still 206.6MB. Free memory was 170.8MB in the beginning and 168.7MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * RCFGBuilder took 650.66ms. Allocated memory is still 206.6MB. Free memory was 168.4MB in the beginning and 125.1MB in the end (delta: 43.3MB). Peak memory consumption was 43.0MB. Max. memory is 8.0GB. * TraceAbstraction took 874261.55ms. Allocated memory was 206.6MB in the beginning and 5.3GB in the end (delta: 5.1GB). Free memory was 124.4MB in the beginning and 1.3GB in the end (delta: -1.1GB). Peak memory consumption was 4.1GB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 151]: Timeout (TraceAbstraction) Unable to prove that call to reach_error is unreachable Cancelled while CegarLoopForPetriNet was analyzing trace of length 226 with TraceHistMax 1,while TraceCheckSpWp was constructing backward predicates,while PolyPacSimplificationTermWalker was simplifying a ∨-17-3-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-1 term,while PolyPacSimplificationTermWalker was simplifying 2 xjuncts wrt. a ATOM-1 context. - TimeoutResultAtElement [Line: 142]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while CegarLoopForPetriNet was analyzing trace of length 226 with TraceHistMax 1,while TraceCheckSpWp was constructing backward predicates,while PolyPacSimplificationTermWalker was simplifying a ∨-17-3-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-1 term,while PolyPacSimplificationTermWalker was simplifying 2 xjuncts wrt. a ATOM-1 context. - TimeoutResultAtElement [Line: 144]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while CegarLoopForPetriNet was analyzing trace of length 226 with TraceHistMax 1,while TraceCheckSpWp was constructing backward predicates,while PolyPacSimplificationTermWalker was simplifying a ∨-17-3-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-1 term,while PolyPacSimplificationTermWalker was simplifying 2 xjuncts wrt. a ATOM-1 context. - TimeoutResultAtElement [Line: 141]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while CegarLoopForPetriNet was analyzing trace of length 226 with TraceHistMax 1,while TraceCheckSpWp was constructing backward predicates,while PolyPacSimplificationTermWalker was simplifying a ∨-17-3-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-1 term,while PolyPacSimplificationTermWalker was simplifying 2 xjuncts wrt. a ATOM-1 context. - TimeoutResultAtElement [Line: 143]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while CegarLoopForPetriNet was analyzing trace of length 226 with TraceHistMax 1,while TraceCheckSpWp was constructing backward predicates,while PolyPacSimplificationTermWalker was simplifying a ∨-17-3-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-1 term,while PolyPacSimplificationTermWalker was simplifying 2 xjuncts wrt. a ATOM-1 context. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 9 procedures, 276 locations, 5 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: 874.1s, OverallIterations: 15, TraceHistogramMax: 1, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 13.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 1158 SdHoareTripleChecker+Valid, 1.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 1158 mSDsluCounter, 1135 SdHoareTripleChecker+Invalid, 0.9s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 1217 mSDsCounter, 61 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1863 IncrementalHoareTripleChecker+Invalid, 1924 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 61 mSolverCounterUnsat, 387 mSDtfsCounter, 1863 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 1229 GetRequests, 1092 SyntacticMatches, 2 SemanticMatches, 135 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 415 ImplicationChecksByTransitivity, 1.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1533occurred in iteration=14, InterpolantAutomatonStates: 107, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.6s SatisfiabilityAnalysisTime, 3.3s InterpolantComputationTime, 3538 NumberOfCodeBlocks, 3538 NumberOfCodeBlocksAsserted, 17 NumberOfCheckSat, 3953 ConstructedInterpolants, 0 QuantifiedInterpolants, 15410 SizeOfPredicates, 27 NumberOfNonLiveVariables, 1655 ConjunctsInSsa, 30 ConjunctsInUnsatCore, 19 InterpolantComputations, 14 PerfectInterpolantSequences, 61/68 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 RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown