/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-RepeatedSemanticLbeWithDisjunctivePredicates.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/pthread-atomic/dekker.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-d5b4239aa45c8d22a30959944f2ef622f7386a6d-d5b4239 [2021-03-26 08:37:01,251 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-03-26 08:37:01,253 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-03-26 08:37:01,285 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-03-26 08:37:01,285 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-03-26 08:37:01,288 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-03-26 08:37:01,290 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-03-26 08:37:01,295 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-03-26 08:37:01,297 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-03-26 08:37:01,301 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-03-26 08:37:01,302 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-03-26 08:37:01,303 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-03-26 08:37:01,303 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-03-26 08:37:01,305 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-03-26 08:37:01,306 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-03-26 08:37:01,307 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-03-26 08:37:01,311 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-03-26 08:37:01,312 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-03-26 08:37:01,314 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-03-26 08:37:01,322 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-03-26 08:37:01,323 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-03-26 08:37:01,324 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-03-26 08:37:01,325 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-03-26 08:37:01,327 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-03-26 08:37:01,332 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-03-26 08:37:01,333 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-03-26 08:37:01,333 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-03-26 08:37:01,334 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-03-26 08:37:01,335 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-03-26 08:37:01,335 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-03-26 08:37:01,336 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-03-26 08:37:01,336 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-03-26 08:37:01,338 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-03-26 08:37:01,338 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-03-26 08:37:01,339 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-03-26 08:37:01,339 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-03-26 08:37:01,340 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-03-26 08:37:01,340 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-03-26 08:37:01,340 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-03-26 08:37:01,341 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-03-26 08:37:01,342 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-03-26 08:37:01,349 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-RepeatedSemanticLbeWithDisjunctivePredicates.epf [2021-03-26 08:37:01,386 INFO L113 SettingsManager]: Loading preferences was successful [2021-03-26 08:37:01,386 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-03-26 08:37:01,389 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-03-26 08:37:01,390 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-03-26 08:37:01,390 INFO L138 SettingsManager]: * Use SBE=true [2021-03-26 08:37:01,390 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-03-26 08:37:01,390 INFO L138 SettingsManager]: * sizeof long=4 [2021-03-26 08:37:01,390 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-03-26 08:37:01,390 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-03-26 08:37:01,391 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-03-26 08:37:01,391 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-03-26 08:37:01,391 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-03-26 08:37:01,392 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-03-26 08:37:01,392 INFO L138 SettingsManager]: * sizeof long double=12 [2021-03-26 08:37:01,392 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-03-26 08:37:01,392 INFO L138 SettingsManager]: * Use constant arrays=true [2021-03-26 08:37:01,392 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-03-26 08:37:01,392 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-03-26 08:37:01,392 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-03-26 08:37:01,393 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-03-26 08:37:01,393 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-03-26 08:37:01,393 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-03-26 08:37:01,393 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-03-26 08:37:01,393 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-03-26 08:37:01,393 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-03-26 08:37:01,394 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-03-26 08:37:01,394 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-03-26 08:37:01,394 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=SEMANTIC_BASED_MOVER_CHECK_WITH_PREDICATES_DISJUNCTIVE [2021-03-26 08:37:01,394 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-03-26 08:37:01,394 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-03-26 08:37:01,394 INFO L138 SettingsManager]: * Apply repeated Lipton Reduction=true 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-03-26 08:37:01,674 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-03-26 08:37:01,690 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-03-26 08:37:01,692 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-03-26 08:37:01,692 INFO L271 PluginConnector]: Initializing CDTParser... [2021-03-26 08:37:01,693 INFO L275 PluginConnector]: CDTParser initialized [2021-03-26 08:37:01,694 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-atomic/dekker.i [2021-03-26 08:37:01,751 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d5390560e/f082ab227e78464eaefd55f0d02c4a58/FLAG7baa9a0b1 [2021-03-26 08:37:02,222 INFO L306 CDTParser]: Found 1 translation units. [2021-03-26 08:37:02,223 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-atomic/dekker.i [2021-03-26 08:37:02,240 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d5390560e/f082ab227e78464eaefd55f0d02c4a58/FLAG7baa9a0b1 [2021-03-26 08:37:02,256 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d5390560e/f082ab227e78464eaefd55f0d02c4a58 [2021-03-26 08:37:02,258 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-03-26 08:37:02,260 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-03-26 08:37:02,263 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-03-26 08:37:02,263 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-03-26 08:37:02,265 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-03-26 08:37:02,266 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.03 08:37:02" (1/1) ... [2021-03-26 08:37:02,268 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5a676dcd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.03 08:37:02, skipping insertion in model container [2021-03-26 08:37:02,268 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.03 08:37:02" (1/1) ... [2021-03-26 08:37:02,276 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-03-26 08:37:02,324 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-03-26 08:37:02,526 WARN L612 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2021-03-26 08:37:02,646 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-atomic/dekker.i[31403,31416] [2021-03-26 08:37:02,656 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-atomic/dekker.i[32483,32496] [2021-03-26 08:37:02,663 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-03-26 08:37:02,670 INFO L203 MainTranslator]: Completed pre-run [2021-03-26 08:37:02,694 WARN L612 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2021-03-26 08:37:02,722 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-atomic/dekker.i[31403,31416] [2021-03-26 08:37:02,725 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-atomic/dekker.i[32483,32496] [2021-03-26 08:37:02,727 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-03-26 08:37:02,801 INFO L208 MainTranslator]: Completed translation [2021-03-26 08:37:02,801 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.03 08:37:02 WrapperNode [2021-03-26 08:37:02,802 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-03-26 08:37:02,802 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-03-26 08:37:02,803 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-03-26 08:37:02,803 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-03-26 08:37:02,808 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.03 08:37:02" (1/1) ... [2021-03-26 08:37:02,836 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.03 08:37:02" (1/1) ... [2021-03-26 08:37:02,853 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-03-26 08:37:02,854 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-03-26 08:37:02,854 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-03-26 08:37:02,854 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-03-26 08:37:02,860 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.03 08:37:02" (1/1) ... [2021-03-26 08:37:02,861 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.03 08:37:02" (1/1) ... [2021-03-26 08:37:02,871 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.03 08:37:02" (1/1) ... [2021-03-26 08:37:02,872 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.03 08:37:02" (1/1) ... [2021-03-26 08:37:02,883 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.03 08:37:02" (1/1) ... [2021-03-26 08:37:02,889 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.03 08:37:02" (1/1) ... [2021-03-26 08:37:02,891 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.03 08:37:02" (1/1) ... [2021-03-26 08:37:02,893 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-03-26 08:37:02,893 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-03-26 08:37:02,894 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-03-26 08:37:02,894 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-03-26 08:37:02,894 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.03 08:37:02" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-03-26 08:37:02,965 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-03-26 08:37:02,966 INFO L130 BoogieDeclarations]: Found specification of procedure thr2 [2021-03-26 08:37:02,966 INFO L138 BoogieDeclarations]: Found implementation of procedure thr2 [2021-03-26 08:37:02,966 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2021-03-26 08:37:02,966 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2021-03-26 08:37:02,966 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-03-26 08:37:02,966 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-03-26 08:37:02,966 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-03-26 08:37:02,967 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-03-26 08:37:02,967 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-03-26 08:37:02,967 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-03-26 08:37:02,967 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-03-26 08:37:02,967 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-03-26 08:37:02,968 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-03-26 08:37:03,463 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-03-26 08:37:03,463 INFO L299 CfgBuilder]: Removed 10 assume(true) statements. [2021-03-26 08:37:03,466 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.03 08:37:03 BoogieIcfgContainer [2021-03-26 08:37:03,466 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-03-26 08:37:03,468 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-03-26 08:37:03,468 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-03-26 08:37:03,471 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-03-26 08:37:03,471 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.03 08:37:02" (1/3) ... [2021-03-26 08:37:03,471 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@15e98181 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.03 08:37:03, skipping insertion in model container [2021-03-26 08:37:03,472 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.03 08:37:02" (2/3) ... [2021-03-26 08:37:03,472 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@15e98181 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.03 08:37:03, skipping insertion in model container [2021-03-26 08:37:03,472 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.03 08:37:03" (3/3) ... [2021-03-26 08:37:03,473 INFO L111 eAbstractionObserver]: Analyzing ICFG dekker.i [2021-03-26 08:37:03,478 INFO L149 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-03-26 08:37:03,481 INFO L161 ceAbstractionStarter]: Appying trace abstraction to program that has 2 error locations. [2021-03-26 08:37:03,482 INFO L323 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-03-26 08:37:03,513 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork1_#in~_.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 08:37:03,513 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork1_#in~_.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 08:37:03,514 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~_.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 08:37:03,514 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~_.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 08:37:03,514 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork1_#in~_.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 08:37:03,514 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork1_#in~_.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 08:37:03,514 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~_.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 08:37:03,514 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~_.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 08:37:03,514 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~f1~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 08:37:03,515 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~f1~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 08:37:03,515 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~f1~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 08:37:03,515 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~f1~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 08:37:03,515 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~f1~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 08:37:03,515 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~f1~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 08:37:03,516 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~t~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 08:37:03,516 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~t~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 08:37:03,516 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~t~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 08:37:03,516 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~t~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 08:37:03,517 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~t~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 08:37:03,517 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~t~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 08:37:03,519 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~f1~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 08:37:03,520 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~f1~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 08:37:03,520 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~t~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 08:37:03,520 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~t~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 08:37:03,520 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 08:37:03,520 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 08:37:03,523 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 08:37:03,524 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 08:37:03,524 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~t~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 08:37:03,524 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~t~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 08:37:03,526 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~t~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 08:37:03,527 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~t~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 08:37:03,528 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~t~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 08:37:03,528 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~t~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 08:37:03,529 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#in~_.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 08:37:03,530 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#in~_.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 08:37:03,530 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~_.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 08:37:03,530 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~_.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 08:37:03,531 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#in~_.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 08:37:03,531 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#in~_.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 08:37:03,531 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~_.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 08:37:03,531 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~_.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 08:37:03,531 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f2~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 08:37:03,532 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f2~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 08:37:03,533 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f2~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 08:37:03,533 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f2~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 08:37:03,533 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f2~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 08:37:03,533 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f2~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 08:37:03,534 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 08:37:03,535 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 08:37:03,535 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 08:37:03,535 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 08:37:03,535 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 08:37:03,536 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 08:37:03,536 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f2~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 08:37:03,536 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f2~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 08:37:03,536 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 08:37:03,537 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 08:37:03,537 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 08:37:03,537 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 08:37:03,537 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 08:37:03,537 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 08:37:03,537 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 08:37:03,538 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 08:37:03,538 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 08:37:03,538 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 08:37:03,538 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 08:37:03,538 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 08:37:03,540 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 08:37:03,540 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~_.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 08:37:03,540 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 08:37:03,540 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f2~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 08:37:03,541 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 08:37:03,541 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~_.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 08:37:03,544 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~f1~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 08:37:03,545 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~_.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 08:37:03,545 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 08:37:03,545 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~t~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 08:37:03,546 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 08:37:03,546 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~_.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 08:37:03,560 INFO L149 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2021-03-26 08:37:03,576 INFO L253 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2021-03-26 08:37:03,604 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-03-26 08:37:03,604 INFO L377 AbstractCegarLoop]: Hoare is false [2021-03-26 08:37:03,604 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-03-26 08:37:03,604 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-03-26 08:37:03,604 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-03-26 08:37:03,604 INFO L381 AbstractCegarLoop]: Difference is false [2021-03-26 08:37:03,605 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-03-26 08:37:03,605 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-03-26 08:37:03,617 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 88 places, 96 transitions, 214 flow [2021-03-26 08:37:03,672 INFO L129 PetriNetUnfolder]: 14/96 cut-off events. [2021-03-26 08:37:03,672 INFO L130 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2021-03-26 08:37:03,676 INFO L84 FinitePrefix]: Finished finitePrefix Result has 107 conditions, 96 events. 14/96 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 160 event pairs, 0 based on Foata normal form. 0/81 useless extension candidates. Maximal degree in co-relation 63. Up to 3 conditions per place. [2021-03-26 08:37:03,677 INFO L82 GeneralOperation]: Start removeDead. Operand has 88 places, 96 transitions, 214 flow [2021-03-26 08:37:03,682 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 77 places, 84 transitions, 180 flow [2021-03-26 08:37:03,685 INFO L170 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-03-26 08:37:03,695 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 77 places, 84 transitions, 180 flow [2021-03-26 08:37:03,697 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 77 places, 84 transitions, 180 flow [2021-03-26 08:37:03,698 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 77 places, 84 transitions, 180 flow [2021-03-26 08:37:03,712 INFO L129 PetriNetUnfolder]: 13/86 cut-off events. [2021-03-26 08:37:03,712 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2021-03-26 08:37:03,713 INFO L84 FinitePrefix]: Finished finitePrefix Result has 95 conditions, 86 events. 13/86 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 154 event pairs, 0 based on Foata normal form. 0/71 useless extension candidates. Maximal degree in co-relation 63. Up to 2 conditions per place. [2021-03-26 08:37:03,715 INFO L142 LiptonReduction]: Number of co-enabled transitions 2028 [2021-03-26 08:37:04,885 INFO L154 LiptonReduction]: Checked pairs total: 1427 [2021-03-26 08:37:04,885 INFO L156 LiptonReduction]: Total number of compositions: 52 [2021-03-26 08:37:04,889 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 1205 [2021-03-26 08:37:04,901 INFO L129 PetriNetUnfolder]: 1/16 cut-off events. [2021-03-26 08:37:04,901 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-26 08:37:04,901 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-26 08:37:04,901 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-26 08:37:04,902 INFO L428 AbstractCegarLoop]: === Iteration 1 === [thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-26 08:37:04,906 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-26 08:37:04,907 INFO L82 PathProgramCache]: Analyzing trace with hash -1854467217, now seen corresponding path program 1 times [2021-03-26 08:37:04,913 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-26 08:37:04,913 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [697931287] [2021-03-26 08:37:04,913 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-26 08:37:05,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-26 08:37:05,058 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:37:05,059 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-26 08:37:05,060 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:37:05,060 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-26 08:37:05,062 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-26 08:37:05,062 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [697931287] [2021-03-26 08:37:05,063 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-26 08:37:05,063 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-03-26 08:37:05,063 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1887192537] [2021-03-26 08:37:05,071 INFO L460 AbstractCegarLoop]: Interpolant automaton has 2 states [2021-03-26 08:37:05,071 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-26 08:37:05,079 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-03-26 08:37:05,081 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-03-26 08:37:05,083 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 130 out of 148 [2021-03-26 08:37:05,087 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 45 transitions, 102 flow. Second operand has 2 states, 2 states have (on average 130.5) internal successors, (261), 2 states have internal predecessors, (261), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 08:37:05,087 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-26 08:37:05,087 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 130 of 148 [2021-03-26 08:37:05,088 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-26 08:37:05,104 INFO L129 PetriNetUnfolder]: 6/43 cut-off events. [2021-03-26 08:37:05,104 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2021-03-26 08:37:05,105 INFO L84 FinitePrefix]: Finished finitePrefix Result has 53 conditions, 43 events. 6/43 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 83 event pairs, 0 based on Foata normal form. 2/37 useless extension candidates. Maximal degree in co-relation 49. Up to 3 conditions per place. [2021-03-26 08:37:05,106 INFO L132 encePairwiseOnDemand]: 146/148 looper letters, 0 selfloop transitions, 0 changer transitions 0/42 dead transitions. [2021-03-26 08:37:05,106 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 42 transitions, 96 flow [2021-03-26 08:37:05,107 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-03-26 08:37:05,108 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2021-03-26 08:37:05,117 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 262 transitions. [2021-03-26 08:37:05,120 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8851351351351351 [2021-03-26 08:37:05,121 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 262 transitions. [2021-03-26 08:37:05,121 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 262 transitions. [2021-03-26 08:37:05,124 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-26 08:37:05,125 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 262 transitions. [2021-03-26 08:37:05,130 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 131.0) internal successors, (262), 2 states have internal predecessors, (262), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 08:37:05,136 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 148.0) internal successors, (444), 3 states have internal predecessors, (444), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 08:37:05,136 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 148.0) internal successors, (444), 3 states have internal predecessors, (444), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 08:37:05,138 INFO L185 Difference]: Start difference. First operand has 43 places, 45 transitions, 102 flow. Second operand 2 states and 262 transitions. [2021-03-26 08:37:05,138 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 42 transitions, 96 flow [2021-03-26 08:37:05,140 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 39 places, 42 transitions, 88 flow, removed 0 selfloop flow, removed 4 redundant places. [2021-03-26 08:37:05,141 INFO L241 Difference]: Finished difference. Result has 39 places, 42 transitions, 88 flow [2021-03-26 08:37:05,143 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=148, PETRI_DIFFERENCE_MINUEND_FLOW=88, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=88, PETRI_PLACES=39, PETRI_TRANSITIONS=42} [2021-03-26 08:37:05,143 INFO L343 CegarLoopForPetriNet]: 43 programPoint places, -4 predicate places. [2021-03-26 08:37:05,143 INFO L170 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-03-26 08:37:05,144 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 39 places, 42 transitions, 88 flow [2021-03-26 08:37:05,145 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 39 places, 42 transitions, 88 flow [2021-03-26 08:37:05,145 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 38 places, 42 transitions, 88 flow [2021-03-26 08:37:05,157 INFO L129 PetriNetUnfolder]: 6/43 cut-off events. [2021-03-26 08:37:05,157 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-26 08:37:05,159 INFO L84 FinitePrefix]: Finished finitePrefix Result has 46 conditions, 43 events. 6/43 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 82 event pairs, 0 based on Foata normal form. 0/35 useless extension candidates. Maximal degree in co-relation 30. Up to 3 conditions per place. [2021-03-26 08:37:05,160 INFO L142 LiptonReduction]: Number of co-enabled transitions 690 [2021-03-26 08:37:05,663 WARN L205 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 70 [2021-03-26 08:37:05,846 WARN L205 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 70 [2021-03-26 08:37:05,924 INFO L154 LiptonReduction]: Checked pairs total: 848 [2021-03-26 08:37:05,925 INFO L156 LiptonReduction]: Total number of compositions: 5 [2021-03-26 08:37:05,925 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 782 [2021-03-26 08:37:05,927 INFO L480 AbstractCegarLoop]: Abstraction has has 35 places, 39 transitions, 82 flow [2021-03-26 08:37:05,927 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 2 states, 2 states have (on average 130.5) internal successors, (261), 2 states have internal predecessors, (261), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 08:37:05,927 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-26 08:37:05,927 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-26 08:37:05,927 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-03-26 08:37:05,928 INFO L428 AbstractCegarLoop]: === Iteration 2 === [thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-26 08:37:05,928 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-26 08:37:05,928 INFO L82 PathProgramCache]: Analyzing trace with hash 120944202, now seen corresponding path program 1 times [2021-03-26 08:37:05,928 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-26 08:37:05,929 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [989936216] [2021-03-26 08:37:05,929 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-26 08:37:05,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-26 08:37:06,004 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:37:06,005 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-26 08:37:06,005 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:37:06,006 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-26 08:37:06,015 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-26 08:37:06,015 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [989936216] [2021-03-26 08:37:06,015 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-26 08:37:06,015 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-03-26 08:37:06,016 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1512351121] [2021-03-26 08:37:06,017 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-03-26 08:37:06,017 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-26 08:37:06,017 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-03-26 08:37:06,017 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-26 08:37:06,018 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 113 out of 153 [2021-03-26 08:37:06,019 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 39 transitions, 82 flow. Second operand has 3 states, 3 states have (on average 114.0) internal successors, (342), 3 states have internal predecessors, (342), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 08:37:06,019 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-26 08:37:06,019 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 113 of 153 [2021-03-26 08:37:06,019 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-26 08:37:06,048 INFO L129 PetriNetUnfolder]: 9/77 cut-off events. [2021-03-26 08:37:06,049 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-26 08:37:06,049 INFO L84 FinitePrefix]: Finished finitePrefix Result has 105 conditions, 77 events. 9/77 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 325 event pairs, 1 based on Foata normal form. 4/68 useless extension candidates. Maximal degree in co-relation 80. Up to 14 conditions per place. [2021-03-26 08:37:06,049 INFO L132 encePairwiseOnDemand]: 147/153 looper letters, 5 selfloop transitions, 5 changer transitions 0/42 dead transitions. [2021-03-26 08:37:06,050 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 37 places, 42 transitions, 108 flow [2021-03-26 08:37:06,050 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-26 08:37:06,050 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-03-26 08:37:06,051 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 350 transitions. [2021-03-26 08:37:06,051 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.7625272331154684 [2021-03-26 08:37:06,052 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 350 transitions. [2021-03-26 08:37:06,052 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 350 transitions. [2021-03-26 08:37:06,052 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-26 08:37:06,052 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 350 transitions. [2021-03-26 08:37:06,053 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 116.66666666666667) internal successors, (350), 3 states have internal predecessors, (350), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 08:37:06,054 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 153.0) internal successors, (612), 4 states have internal predecessors, (612), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 08:37:06,055 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 153.0) internal successors, (612), 4 states have internal predecessors, (612), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 08:37:06,055 INFO L185 Difference]: Start difference. First operand has 35 places, 39 transitions, 82 flow. Second operand 3 states and 350 transitions. [2021-03-26 08:37:06,055 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 37 places, 42 transitions, 108 flow [2021-03-26 08:37:06,055 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 37 places, 42 transitions, 108 flow, removed 0 selfloop flow, removed 0 redundant places. [2021-03-26 08:37:06,056 INFO L241 Difference]: Finished difference. Result has 39 places, 41 transitions, 112 flow [2021-03-26 08:37:06,057 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=153, PETRI_DIFFERENCE_MINUEND_FLOW=82, PETRI_DIFFERENCE_MINUEND_PLACES=35, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=112, PETRI_PLACES=39, PETRI_TRANSITIONS=41} [2021-03-26 08:37:06,057 INFO L343 CegarLoopForPetriNet]: 43 programPoint places, -4 predicate places. [2021-03-26 08:37:06,057 INFO L170 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-03-26 08:37:06,057 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 39 places, 41 transitions, 112 flow [2021-03-26 08:37:06,058 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 39 places, 41 transitions, 112 flow [2021-03-26 08:37:06,058 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 39 places, 41 transitions, 112 flow [2021-03-26 08:37:06,063 INFO L129 PetriNetUnfolder]: 6/67 cut-off events. [2021-03-26 08:37:06,063 INFO L130 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2021-03-26 08:37:06,063 INFO L84 FinitePrefix]: Finished finitePrefix Result has 98 conditions, 67 events. 6/67 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 282 event pairs, 0 based on Foata normal form. 0/55 useless extension candidates. Maximal degree in co-relation 73. Up to 9 conditions per place. [2021-03-26 08:37:06,064 INFO L142 LiptonReduction]: Number of co-enabled transitions 658 [2021-03-26 08:37:06,266 WARN L205 SmtUtils]: Spent 197.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 84 [2021-03-26 08:37:06,529 WARN L205 SmtUtils]: Spent 164.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 84 [2021-03-26 08:37:06,631 INFO L154 LiptonReduction]: Checked pairs total: 460 [2021-03-26 08:37:06,631 INFO L156 LiptonReduction]: Total number of compositions: 2 [2021-03-26 08:37:06,631 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 574 [2021-03-26 08:37:06,632 INFO L480 AbstractCegarLoop]: Abstraction has has 38 places, 39 transitions, 104 flow [2021-03-26 08:37:06,633 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 114.0) internal successors, (342), 3 states have internal predecessors, (342), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 08:37:06,633 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-26 08:37:06,633 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-26 08:37:06,633 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-03-26 08:37:06,633 INFO L428 AbstractCegarLoop]: === Iteration 3 === [thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-26 08:37:06,633 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-26 08:37:06,634 INFO L82 PathProgramCache]: Analyzing trace with hash 1128304159, now seen corresponding path program 1 times [2021-03-26 08:37:06,634 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-26 08:37:06,634 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [298584352] [2021-03-26 08:37:06,634 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-26 08:37:06,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-26 08:37:06,676 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:37:06,676 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-26 08:37:06,677 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:37:06,677 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-26 08:37:06,681 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-26 08:37:06,681 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [298584352] [2021-03-26 08:37:06,681 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-26 08:37:06,681 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-03-26 08:37:06,682 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1457326811] [2021-03-26 08:37:06,682 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-03-26 08:37:06,682 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-26 08:37:06,682 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-03-26 08:37:06,683 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-26 08:37:06,684 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 113 out of 154 [2021-03-26 08:37:06,684 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 38 places, 39 transitions, 104 flow. Second operand has 3 states, 3 states have (on average 114.0) internal successors, (342), 3 states have internal predecessors, (342), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 08:37:06,684 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-26 08:37:06,684 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 113 of 154 [2021-03-26 08:37:06,684 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-26 08:37:06,708 INFO L129 PetriNetUnfolder]: 6/62 cut-off events. [2021-03-26 08:37:06,711 INFO L130 PetriNetUnfolder]: For 10/16 co-relation queries the response was YES. [2021-03-26 08:37:06,712 INFO L84 FinitePrefix]: Finished finitePrefix Result has 104 conditions, 62 events. 6/62 cut-off events. For 10/16 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 239 event pairs, 0 based on Foata normal form. 4/56 useless extension candidates. Maximal degree in co-relation 78. Up to 9 conditions per place. [2021-03-26 08:37:06,713 INFO L132 encePairwiseOnDemand]: 150/154 looper letters, 5 selfloop transitions, 3 changer transitions 0/39 dead transitions. [2021-03-26 08:37:06,713 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 40 places, 39 transitions, 120 flow [2021-03-26 08:37:06,713 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-26 08:37:06,713 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-03-26 08:37:06,714 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 348 transitions. [2021-03-26 08:37:06,714 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.7532467532467533 [2021-03-26 08:37:06,714 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 348 transitions. [2021-03-26 08:37:06,714 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 348 transitions. [2021-03-26 08:37:06,715 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-26 08:37:06,715 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 348 transitions. [2021-03-26 08:37:06,716 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 116.0) internal successors, (348), 3 states have internal predecessors, (348), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 08:37:06,718 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 154.0) internal successors, (616), 4 states have internal predecessors, (616), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 08:37:06,718 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 154.0) internal successors, (616), 4 states have internal predecessors, (616), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 08:37:06,718 INFO L185 Difference]: Start difference. First operand has 38 places, 39 transitions, 104 flow. Second operand 3 states and 348 transitions. [2021-03-26 08:37:06,718 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 40 places, 39 transitions, 120 flow [2021-03-26 08:37:06,719 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 38 places, 39 transitions, 112 flow, removed 0 selfloop flow, removed 2 redundant places. [2021-03-26 08:37:06,720 INFO L241 Difference]: Finished difference. Result has 39 places, 39 transitions, 107 flow [2021-03-26 08:37:06,720 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=154, PETRI_DIFFERENCE_MINUEND_FLOW=96, PETRI_DIFFERENCE_MINUEND_PLACES=36, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=107, PETRI_PLACES=39, PETRI_TRANSITIONS=39} [2021-03-26 08:37:06,720 INFO L343 CegarLoopForPetriNet]: 43 programPoint places, -4 predicate places. [2021-03-26 08:37:06,720 INFO L170 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-03-26 08:37:06,720 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 39 places, 39 transitions, 107 flow [2021-03-26 08:37:06,721 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 39 places, 39 transitions, 107 flow [2021-03-26 08:37:06,721 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 39 places, 39 transitions, 107 flow [2021-03-26 08:37:06,725 INFO L129 PetriNetUnfolder]: 6/62 cut-off events. [2021-03-26 08:37:06,725 INFO L130 PetriNetUnfolder]: For 7/7 co-relation queries the response was YES. [2021-03-26 08:37:06,727 INFO L84 FinitePrefix]: Finished finitePrefix Result has 92 conditions, 62 events. 6/62 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 245 event pairs, 0 based on Foata normal form. 0/52 useless extension candidates. Maximal degree in co-relation 68. Up to 9 conditions per place. [2021-03-26 08:37:06,729 INFO L142 LiptonReduction]: Number of co-enabled transitions 622 [2021-03-26 08:37:06,732 INFO L154 LiptonReduction]: Checked pairs total: 203 [2021-03-26 08:37:06,732 INFO L156 LiptonReduction]: Total number of compositions: 0 [2021-03-26 08:37:06,733 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 13 [2021-03-26 08:37:06,735 INFO L480 AbstractCegarLoop]: Abstraction has has 39 places, 39 transitions, 107 flow [2021-03-26 08:37:06,736 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 114.0) internal successors, (342), 3 states have internal predecessors, (342), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 08:37:06,736 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-26 08:37:06,736 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-26 08:37:06,736 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-03-26 08:37:06,736 INFO L428 AbstractCegarLoop]: === Iteration 4 === [thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-26 08:37:06,736 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-26 08:37:06,737 INFO L82 PathProgramCache]: Analyzing trace with hash -1911891639, now seen corresponding path program 1 times [2021-03-26 08:37:06,737 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-26 08:37:06,737 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1686748405] [2021-03-26 08:37:06,737 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-26 08:37:06,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-26 08:37:06,803 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:37:06,804 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-26 08:37:06,804 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:37:06,805 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-26 08:37:06,808 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:37:06,808 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-26 08:37:06,811 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:37:06,811 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-26 08:37:06,811 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-26 08:37:06,812 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1686748405] [2021-03-26 08:37:06,812 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-26 08:37:06,812 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-03-26 08:37:06,812 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2097866789] [2021-03-26 08:37:06,812 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-03-26 08:37:06,812 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-26 08:37:06,813 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-03-26 08:37:06,813 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-03-26 08:37:06,814 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 111 out of 154 [2021-03-26 08:37:06,814 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 39 places, 39 transitions, 107 flow. Second operand has 4 states, 4 states have (on average 112.25) internal successors, (449), 4 states have internal predecessors, (449), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 08:37:06,815 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-26 08:37:06,815 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 111 of 154 [2021-03-26 08:37:06,815 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-26 08:37:06,879 INFO L129 PetriNetUnfolder]: 62/204 cut-off events. [2021-03-26 08:37:06,879 INFO L130 PetriNetUnfolder]: For 63/63 co-relation queries the response was YES. [2021-03-26 08:37:06,880 INFO L84 FinitePrefix]: Finished finitePrefix Result has 345 conditions, 204 events. 62/204 cut-off events. For 63/63 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 1027 event pairs, 8 based on Foata normal form. 4/188 useless extension candidates. Maximal degree in co-relation 276. Up to 41 conditions per place. [2021-03-26 08:37:06,882 INFO L132 encePairwiseOnDemand]: 145/154 looper letters, 16 selfloop transitions, 12 changer transitions 0/55 dead transitions. [2021-03-26 08:37:06,882 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 55 transitions, 206 flow [2021-03-26 08:37:06,882 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-03-26 08:37:06,882 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-03-26 08:37:06,883 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 587 transitions. [2021-03-26 08:37:06,884 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.7623376623376623 [2021-03-26 08:37:06,884 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 587 transitions. [2021-03-26 08:37:06,884 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 587 transitions. [2021-03-26 08:37:06,884 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-26 08:37:06,884 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 587 transitions. [2021-03-26 08:37:06,886 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 117.4) internal successors, (587), 5 states have internal predecessors, (587), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 08:37:06,888 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 154.0) internal successors, (924), 6 states have internal predecessors, (924), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 08:37:06,888 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 154.0) internal successors, (924), 6 states have internal predecessors, (924), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 08:37:06,888 INFO L185 Difference]: Start difference. First operand has 39 places, 39 transitions, 107 flow. Second operand 5 states and 587 transitions. [2021-03-26 08:37:06,888 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 55 transitions, 206 flow [2021-03-26 08:37:06,891 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 55 transitions, 201 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-03-26 08:37:06,892 INFO L241 Difference]: Finished difference. Result has 45 places, 47 transitions, 180 flow [2021-03-26 08:37:06,893 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=154, PETRI_DIFFERENCE_MINUEND_FLOW=104, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=180, PETRI_PLACES=45, PETRI_TRANSITIONS=47} [2021-03-26 08:37:06,893 INFO L343 CegarLoopForPetriNet]: 43 programPoint places, 2 predicate places. [2021-03-26 08:37:06,893 INFO L170 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-03-26 08:37:06,898 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 45 places, 47 transitions, 180 flow [2021-03-26 08:37:06,899 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 45 places, 47 transitions, 180 flow [2021-03-26 08:37:06,899 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 45 places, 47 transitions, 180 flow [2021-03-26 08:37:06,912 INFO L129 PetriNetUnfolder]: 31/117 cut-off events. [2021-03-26 08:37:06,912 INFO L130 PetriNetUnfolder]: For 43/53 co-relation queries the response was YES. [2021-03-26 08:37:06,913 INFO L84 FinitePrefix]: Finished finitePrefix Result has 227 conditions, 117 events. 31/117 cut-off events. For 43/53 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 489 event pairs, 2 based on Foata normal form. 0/105 useless extension candidates. Maximal degree in co-relation 196. Up to 26 conditions per place. [2021-03-26 08:37:06,914 INFO L142 LiptonReduction]: Number of co-enabled transitions 698 [2021-03-26 08:37:06,922 INFO L154 LiptonReduction]: Checked pairs total: 159 [2021-03-26 08:37:06,922 INFO L156 LiptonReduction]: Total number of compositions: 0 [2021-03-26 08:37:06,922 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 29 [2021-03-26 08:37:06,926 INFO L480 AbstractCegarLoop]: Abstraction has has 45 places, 47 transitions, 180 flow [2021-03-26 08:37:06,926 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 112.25) internal successors, (449), 4 states have internal predecessors, (449), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 08:37:06,926 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-26 08:37:06,926 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-26 08:37:06,926 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-03-26 08:37:06,927 INFO L428 AbstractCegarLoop]: === Iteration 5 === [thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-26 08:37:06,928 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-26 08:37:06,928 INFO L82 PathProgramCache]: Analyzing trace with hash 669214875, now seen corresponding path program 1 times [2021-03-26 08:37:06,928 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-26 08:37:06,928 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1863755059] [2021-03-26 08:37:06,928 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-26 08:37:06,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-26 08:37:06,977 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:37:06,978 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-26 08:37:06,978 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:37:06,979 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-26 08:37:06,982 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:37:06,982 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-26 08:37:06,986 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:37:06,986 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-26 08:37:06,986 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-26 08:37:06,986 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1863755059] [2021-03-26 08:37:06,986 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-26 08:37:06,986 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-03-26 08:37:06,987 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2071165230] [2021-03-26 08:37:06,987 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-03-26 08:37:06,987 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-26 08:37:06,987 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-03-26 08:37:06,987 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-03-26 08:37:06,988 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 109 out of 154 [2021-03-26 08:37:06,989 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 47 transitions, 180 flow. Second operand has 4 states, 4 states have (on average 110.25) internal successors, (441), 4 states have internal predecessors, (441), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 08:37:06,989 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-26 08:37:06,989 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 109 of 154 [2021-03-26 08:37:06,989 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-26 08:37:07,049 INFO L129 PetriNetUnfolder]: 113/281 cut-off events. [2021-03-26 08:37:07,049 INFO L130 PetriNetUnfolder]: For 87/95 co-relation queries the response was YES. [2021-03-26 08:37:07,050 INFO L84 FinitePrefix]: Finished finitePrefix Result has 577 conditions, 281 events. 113/281 cut-off events. For 87/95 co-relation queries the response was YES. Maximal size of possible extension queue 34. Compared 1337 event pairs, 8 based on Foata normal form. 8/277 useless extension candidates. Maximal degree in co-relation 541. Up to 53 conditions per place. [2021-03-26 08:37:07,050 INFO L132 encePairwiseOnDemand]: 145/154 looper letters, 0 selfloop transitions, 0 changer transitions 60/60 dead transitions. [2021-03-26 08:37:07,050 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 60 transitions, 262 flow [2021-03-26 08:37:07,051 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-03-26 08:37:07,051 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-03-26 08:37:07,052 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 576 transitions. [2021-03-26 08:37:07,053 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.7480519480519481 [2021-03-26 08:37:07,053 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 576 transitions. [2021-03-26 08:37:07,053 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 576 transitions. [2021-03-26 08:37:07,053 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-26 08:37:07,053 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 576 transitions. [2021-03-26 08:37:07,054 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 115.2) internal successors, (576), 5 states have internal predecessors, (576), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 08:37:07,056 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 154.0) internal successors, (924), 6 states have internal predecessors, (924), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 08:37:07,056 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 154.0) internal successors, (924), 6 states have internal predecessors, (924), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 08:37:07,056 INFO L185 Difference]: Start difference. First operand has 45 places, 47 transitions, 180 flow. Second operand 5 states and 576 transitions. [2021-03-26 08:37:07,057 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 60 transitions, 262 flow [2021-03-26 08:37:07,061 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 60 transitions, 255 flow, removed 0 selfloop flow, removed 2 redundant places. [2021-03-26 08:37:07,062 INFO L241 Difference]: Finished difference. Result has 45 places, 0 transitions, 0 flow [2021-03-26 08:37:07,062 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=154, PETRI_DIFFERENCE_MINUEND_FLOW=165, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=0, PETRI_PLACES=45, PETRI_TRANSITIONS=0} [2021-03-26 08:37:07,062 INFO L343 CegarLoopForPetriNet]: 43 programPoint places, 2 predicate places. [2021-03-26 08:37:07,062 INFO L170 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-03-26 08:37:07,062 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 45 places, 0 transitions, 0 flow [2021-03-26 08:37:07,063 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 45 places, 0 transitions, 0 flow [2021-03-26 08:37:07,063 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 0 places, 0 transitions, 0 flow [2021-03-26 08:37:07,063 INFO L129 PetriNetUnfolder]: 0/0 cut-off events. [2021-03-26 08:37:07,063 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-26 08:37:07,063 INFO L84 FinitePrefix]: Finished finitePrefix Result has 0 conditions, 0 events. 0/0 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 0. Compared 0 event pairs, 0 based on Foata normal form. 0/0 useless extension candidates. Maximal degree in co-relation 0. Up to 0 conditions per place. [2021-03-26 08:37:07,063 INFO L142 LiptonReduction]: Number of co-enabled transitions 0 [2021-03-26 08:37:07,063 INFO L154 LiptonReduction]: Checked pairs total: 0 [2021-03-26 08:37:07,063 INFO L156 LiptonReduction]: Total number of compositions: 0 [2021-03-26 08:37:07,063 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 1 [2021-03-26 08:37:07,066 INFO L480 AbstractCegarLoop]: Abstraction has has 0 places, 0 transitions, 0 flow [2021-03-26 08:37:07,066 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 110.25) internal successors, (441), 4 states have internal predecessors, (441), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 08:37:07,066 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-03-26 08:37:07,070 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 26.03 08:37:07 BasicIcfg [2021-03-26 08:37:07,070 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-03-26 08:37:07,071 INFO L168 Benchmark]: Toolchain (without parser) took 4810.48 ms. Allocated memory was 255.9 MB in the beginning and 425.7 MB in the end (delta: 169.9 MB). Free memory was 234.9 MB in the beginning and 325.7 MB in the end (delta: -90.9 MB). Peak memory consumption was 78.6 MB. Max. memory is 16.0 GB. [2021-03-26 08:37:07,073 INFO L168 Benchmark]: CDTParser took 0.14 ms. Allocated memory is still 255.9 MB. Free memory is still 237.3 MB. There was no memory consumed. Max. memory is 16.0 GB. [2021-03-26 08:37:07,078 INFO L168 Benchmark]: CACSL2BoogieTranslator took 539.19 ms. Allocated memory was 255.9 MB in the beginning and 354.4 MB in the end (delta: 98.6 MB). Free memory was 234.4 MB in the beginning and 317.2 MB in the end (delta: -82.8 MB). Peak memory consumption was 14.9 MB. Max. memory is 16.0 GB. [2021-03-26 08:37:07,078 INFO L168 Benchmark]: Boogie Procedure Inliner took 51.01 ms. Allocated memory is still 354.4 MB. Free memory was 317.2 MB in the beginning and 315.2 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-03-26 08:37:07,079 INFO L168 Benchmark]: Boogie Preprocessor took 38.64 ms. Allocated memory is still 354.4 MB. Free memory was 315.2 MB in the beginning and 314.0 MB in the end (delta: 1.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-03-26 08:37:07,079 INFO L168 Benchmark]: RCFGBuilder took 572.46 ms. Allocated memory is still 354.4 MB. Free memory was 314.0 MB in the beginning and 290.0 MB in the end (delta: 24.0 MB). Peak memory consumption was 23.1 MB. Max. memory is 16.0 GB. [2021-03-26 08:37:07,079 INFO L168 Benchmark]: TraceAbstraction took 3601.49 ms. Allocated memory was 354.4 MB in the beginning and 425.7 MB in the end (delta: 71.3 MB). Free memory was 289.8 MB in the beginning and 325.7 MB in the end (delta: -35.9 MB). Peak memory consumption was 36.4 MB. Max. memory is 16.0 GB. [2021-03-26 08:37:07,081 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14 ms. Allocated memory is still 255.9 MB. Free memory is still 237.3 MB. There was no memory consumed. Max. memory is 16.0 GB. * CACSL2BoogieTranslator took 539.19 ms. Allocated memory was 255.9 MB in the beginning and 354.4 MB in the end (delta: 98.6 MB). Free memory was 234.4 MB in the beginning and 317.2 MB in the end (delta: -82.8 MB). Peak memory consumption was 14.9 MB. Max. memory is 16.0 GB. * Boogie Procedure Inliner took 51.01 ms. Allocated memory is still 354.4 MB. Free memory was 317.2 MB in the beginning and 315.2 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * Boogie Preprocessor took 38.64 ms. Allocated memory is still 354.4 MB. Free memory was 315.2 MB in the beginning and 314.0 MB in the end (delta: 1.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * RCFGBuilder took 572.46 ms. Allocated memory is still 354.4 MB. Free memory was 314.0 MB in the beginning and 290.0 MB in the end (delta: 24.0 MB). Peak memory consumption was 23.1 MB. Max. memory is 16.0 GB. * TraceAbstraction took 3601.49 ms. Allocated memory was 354.4 MB in the beginning and 425.7 MB in the end (delta: 71.3 MB). Free memory was 289.8 MB in the beginning and 325.7 MB in the end (delta: -35.9 MB). Peak memory consumption was 36.4 MB. Max. memory is 16.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 1187.5ms, 77 PlacesBefore, 43 PlacesAfterwards, 84 TransitionsBefore, 45 TransitionsAfterwards, 2028 CoEnabledTransitionPairs, 5 FixpointIterations, 17 TrivialSequentialCompositions, 17 ConcurrentSequentialCompositions, 1 TrivialYvCompositions, 12 ConcurrentYvCompositions, 5 ChoiceCompositions, 52 TotalNumberOfCompositions, 1427 MoverChecksTotal, Independence Relation Statistics: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 1138, positive: 1118, positive conditional: 1118, positive unconditional: 0, negative: 20, negative conditional: 20, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: SemanticConditionEliminator.Independence Queries: [ total: 1138, positive: 1118, positive conditional: 0, positive unconditional: 1118, negative: 20, negative conditional: 0, negative unconditional: 20, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticConditionEliminator.Statistics on underlying relation: CachedIndependenceRelation.Independence Queries: [ total: 1138, positive: 1118, positive conditional: 0, positive unconditional: 1118, negative: 20, negative conditional: 0, negative unconditional: 20, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 1003, positive: 989, positive conditional: 0, positive unconditional: 989, negative: 14, negative conditional: 0, negative unconditional: 14, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 1003, positive: 980, positive conditional: 0, positive unconditional: 980, negative: 23, negative conditional: 0, negative unconditional: 23, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 23, positive: 9, positive conditional: 0, positive unconditional: 9, negative: 14, negative conditional: 0, negative unconditional: 14, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 43, positive: 16, positive conditional: 0, positive unconditional: 16, negative: 27, negative conditional: 0, negative unconditional: 27, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 1138, positive: 129, positive conditional: 0, positive unconditional: 129, negative: 6, negative conditional: 0, negative unconditional: 6, unknown: 1003, unknown conditional: 0, unknown unconditional: 1003] , Statistics on independence cache: Total cache size (in pairs): 1003, Positive cache size: 989, Positive conditional cache size: 0, Positive unconditional cache size: 989, Negative cache size: 14, Negative conditional cache size: 0, Negative unconditional cache size: 14, Eliminated conditions: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 779.7ms, 39 PlacesBefore, 35 PlacesAfterwards, 42 TransitionsBefore, 39 TransitionsAfterwards, 690 CoEnabledTransitionPairs, 3 FixpointIterations, 3 TrivialSequentialCompositions, 2 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 5 TotalNumberOfCompositions, 848 MoverChecksTotal, Independence Relation Statistics: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 310, positive: 266, positive conditional: 266, positive unconditional: 0, negative: 44, negative conditional: 44, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: SemanticConditionEliminator.Independence Queries: [ total: 310, positive: 266, positive conditional: 0, positive unconditional: 266, negative: 44, negative conditional: 0, negative unconditional: 44, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticConditionEliminator.Statistics on underlying relation: CachedIndependenceRelation.Independence Queries: [ total: 310, positive: 266, positive conditional: 0, positive unconditional: 266, negative: 44, negative conditional: 0, negative unconditional: 44, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 109, positive: 99, positive conditional: 0, positive unconditional: 99, negative: 10, negative conditional: 0, negative unconditional: 10, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 109, positive: 97, positive conditional: 0, positive unconditional: 97, negative: 12, negative conditional: 0, negative unconditional: 12, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 12, positive: 2, positive conditional: 0, positive unconditional: 2, negative: 10, negative conditional: 0, negative unconditional: 10, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 29, positive: 4, positive conditional: 0, positive unconditional: 4, negative: 25, negative conditional: 0, negative unconditional: 25, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 310, positive: 167, positive conditional: 0, positive unconditional: 167, negative: 34, negative conditional: 0, negative unconditional: 34, unknown: 109, unknown conditional: 0, unknown unconditional: 109] , Statistics on independence cache: Total cache size (in pairs): 1112, Positive cache size: 1088, Positive conditional cache size: 0, Positive unconditional cache size: 1088, Negative cache size: 24, Negative conditional cache size: 0, Negative unconditional cache size: 24, Eliminated conditions: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 573.7ms, 39 PlacesBefore, 38 PlacesAfterwards, 41 TransitionsBefore, 39 TransitionsAfterwards, 658 CoEnabledTransitionPairs, 2 FixpointIterations, 1 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 1 ConcurrentYvCompositions, 0 ChoiceCompositions, 2 TotalNumberOfCompositions, 460 MoverChecksTotal, Independence Relation Statistics: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 121, positive: 96, positive conditional: 96, positive unconditional: 0, negative: 25, negative conditional: 25, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: SemanticConditionEliminator.Independence Queries: [ total: 121, positive: 96, positive conditional: 0, positive unconditional: 96, negative: 25, negative conditional: 0, negative unconditional: 25, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticConditionEliminator.Statistics on underlying relation: CachedIndependenceRelation.Independence Queries: [ total: 121, positive: 96, positive conditional: 0, positive unconditional: 96, negative: 25, negative conditional: 0, negative unconditional: 25, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 11, positive: 10, positive conditional: 0, positive unconditional: 10, negative: 1, negative conditional: 0, negative unconditional: 1, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 11, positive: 10, positive conditional: 0, positive unconditional: 10, negative: 1, negative conditional: 0, negative unconditional: 1, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 1, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 1, negative conditional: 0, negative unconditional: 1, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 2, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 2, negative conditional: 0, negative unconditional: 2, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 121, positive: 86, positive conditional: 0, positive unconditional: 86, negative: 24, negative conditional: 0, negative unconditional: 24, unknown: 11, unknown conditional: 0, unknown unconditional: 11] , Statistics on independence cache: Total cache size (in pairs): 1123, Positive cache size: 1098, Positive conditional cache size: 0, Positive unconditional cache size: 1098, Negative cache size: 25, Negative conditional cache size: 0, Negative unconditional cache size: 25, Eliminated conditions: 4 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 11.4ms, 39 PlacesBefore, 39 PlacesAfterwards, 39 TransitionsBefore, 39 TransitionsAfterwards, 622 CoEnabledTransitionPairs, 1 FixpointIterations, 0 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 0 TotalNumberOfCompositions, 203 MoverChecksTotal, Independence Relation Statistics: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 49, positive: 38, positive conditional: 38, positive unconditional: 0, negative: 11, negative conditional: 11, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: SemanticConditionEliminator.Independence Queries: [ total: 49, positive: 38, positive conditional: 0, positive unconditional: 38, negative: 11, negative conditional: 0, negative unconditional: 11, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticConditionEliminator.Statistics on underlying relation: CachedIndependenceRelation.Independence Queries: [ total: 49, positive: 38, positive conditional: 0, positive unconditional: 38, negative: 11, negative conditional: 0, negative unconditional: 11, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 49, positive: 38, positive conditional: 0, positive unconditional: 38, negative: 11, negative conditional: 0, negative unconditional: 11, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Statistics on independence cache: Total cache size (in pairs): 1123, Positive cache size: 1098, Positive conditional cache size: 0, Positive unconditional cache size: 1098, Negative cache size: 25, Negative conditional cache size: 0, Negative unconditional cache size: 25, Eliminated conditions: 1 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 23.4ms, 45 PlacesBefore, 45 PlacesAfterwards, 47 TransitionsBefore, 47 TransitionsAfterwards, 698 CoEnabledTransitionPairs, 1 FixpointIterations, 0 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 0 TotalNumberOfCompositions, 159 MoverChecksTotal, Independence Relation Statistics: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 42, positive: 34, positive conditional: 34, positive unconditional: 0, negative: 8, negative conditional: 8, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: SemanticConditionEliminator.Independence Queries: [ total: 42, positive: 34, positive conditional: 11, positive unconditional: 23, negative: 8, negative conditional: 0, negative unconditional: 8, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticConditionEliminator.Statistics on underlying relation: CachedIndependenceRelation.Independence Queries: [ total: 42, positive: 34, positive conditional: 11, positive unconditional: 23, negative: 8, negative conditional: 0, negative unconditional: 8, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 10, positive: 10, positive conditional: 6, positive unconditional: 4, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 10, positive: 10, positive conditional: 0, positive unconditional: 10, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 42, positive: 24, positive conditional: 5, positive unconditional: 19, negative: 8, negative conditional: 0, negative unconditional: 8, unknown: 10, unknown conditional: 6, unknown unconditional: 4] , Statistics on independence cache: Total cache size (in pairs): 1133, Positive cache size: 1108, Positive conditional cache size: 6, Positive unconditional cache size: 1102, Negative cache size: 25, Negative conditional cache size: 0, Negative unconditional cache size: 25, Eliminated conditions: 6 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 0.8ms, 45 PlacesBefore, 0 PlacesAfterwards, 0 TransitionsBefore, 0 TransitionsAfterwards, 0 CoEnabledTransitionPairs, 1 FixpointIterations, 0 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 0 TotalNumberOfCompositions, 0 MoverChecksTotal, Independence Relation Statistics: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: SemanticConditionEliminator.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticConditionEliminator.Statistics on underlying relation: CachedIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Statistics on independence cache: Total cache size (in pairs): 1133, Positive cache size: 1108, Positive conditional cache size: 6, Positive unconditional cache size: 1102, Negative cache size: 25, Negative conditional cache size: 0, Negative unconditional cache size: 25, Eliminated conditions: 0 - PositiveResult [Line: 780]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 739]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 82 locations, 2 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 4.8ms, RemoveRedundantFlowTime: 0.0ms, RemoveRedundantFlowUnfoldingTime: 0.0ms, BackfoldingTime: 0.0ms, BackfoldingUnfoldingTime: 0.0ms, FlowIncreaseByBackfolding: 0, BasicCegarLoop: VerificationResult: SAFE, OverallTime: 3466.0ms, OverallIterations: 5, TraceHistogramMax: 1, EmptinessCheckTime: 0.0ms, AutomataDifference: 298.5ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 1291.1ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 52 SDtfs, 24 SDslu, 18 SDs, 0 SdLazy, 70 SolverSat, 14 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 65.7ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 16 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 30.1ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=180occurred in iteration=4, InterpolantAutomatonStates: 18, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 15.3ms SsaConstructionTime, 85.1ms SatisfiabilityAnalysisTime, 205.1ms InterpolantComputationTime, 51 NumberOfCodeBlocks, 51 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 46 ConstructedInterpolants, 0 QuantifiedInterpolants, 72 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 5 InterpolantComputations, 5 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 2 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! Received shutdown request...