/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-RepeatedSemanticLbeWithPredicates.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/pthread-ext/23_lu-fig2.fixed.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-6f4246e9f5583d222ebb38ff8175c901f3a528f0-6f4246e [2021-04-28 15:44:06,085 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-04-28 15:44:06,090 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-04-28 15:44:06,147 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-04-28 15:44:06,148 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-04-28 15:44:06,153 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-04-28 15:44:06,157 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-04-28 15:44:06,166 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-04-28 15:44:06,169 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-04-28 15:44:06,176 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-04-28 15:44:06,178 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-04-28 15:44:06,180 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-04-28 15:44:06,181 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-04-28 15:44:06,183 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-04-28 15:44:06,185 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-04-28 15:44:06,187 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-04-28 15:44:06,191 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-04-28 15:44:06,193 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-04-28 15:44:06,198 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-04-28 15:44:06,201 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-04-28 15:44:06,208 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-04-28 15:44:06,209 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-04-28 15:44:06,210 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-04-28 15:44:06,212 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-04-28 15:44:06,222 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-04-28 15:44:06,229 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-04-28 15:44:06,230 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-04-28 15:44:06,232 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-04-28 15:44:06,233 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-04-28 15:44:06,234 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-04-28 15:44:06,235 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-04-28 15:44:06,236 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-04-28 15:44:06,236 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-04-28 15:44:06,236 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-04-28 15:44:06,237 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-04-28 15:44:06,238 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-04-28 15:44:06,239 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-RepeatedSemanticLbeWithPredicates.epf [2021-04-28 15:44:06,293 INFO L113 SettingsManager]: Loading preferences was successful [2021-04-28 15:44:06,293 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-04-28 15:44:06,299 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-04-28 15:44:06,300 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-04-28 15:44:06,300 INFO L138 SettingsManager]: * Use SBE=true [2021-04-28 15:44:06,300 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-04-28 15:44:06,301 INFO L138 SettingsManager]: * sizeof long=4 [2021-04-28 15:44:06,301 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-04-28 15:44:06,301 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-04-28 15:44:06,302 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-04-28 15:44:06,303 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-04-28 15:44:06,303 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-04-28 15:44:06,303 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-04-28 15:44:06,304 INFO L138 SettingsManager]: * sizeof long double=12 [2021-04-28 15:44:06,304 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-04-28 15:44:06,304 INFO L138 SettingsManager]: * Use constant arrays=true [2021-04-28 15:44:06,304 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-04-28 15:44:06,305 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-04-28 15:44:06,305 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-04-28 15:44:06,305 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-04-28 15:44:06,306 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-04-28 15:44:06,306 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-04-28 15:44:06,307 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-04-28 15:44:06,307 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-04-28 15:44:06,307 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-04-28 15:44:06,307 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-04-28 15:44:06,308 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-04-28 15:44:06,308 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=SEMANTIC_BASED_MOVER_CHECK_WITH_PREDICATES [2021-04-28 15:44:06,308 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-04-28 15:44:06,308 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-04-28 15:44:06,309 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-04-28 15:44:06,761 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-04-28 15:44:06,792 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-04-28 15:44:06,795 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-04-28 15:44:06,797 INFO L271 PluginConnector]: Initializing CDTParser... [2021-04-28 15:44:06,797 INFO L275 PluginConnector]: CDTParser initialized [2021-04-28 15:44:06,799 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-ext/23_lu-fig2.fixed.i [2021-04-28 15:44:06,900 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ebbb203a0/9dff0ea805d94d899b9a1b5b25ff5004/FLAG8c34532fc [2021-04-28 15:44:07,557 INFO L306 CDTParser]: Found 1 translation units. [2021-04-28 15:44:07,558 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-ext/23_lu-fig2.fixed.i [2021-04-28 15:44:07,574 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ebbb203a0/9dff0ea805d94d899b9a1b5b25ff5004/FLAG8c34532fc [2021-04-28 15:44:07,815 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ebbb203a0/9dff0ea805d94d899b9a1b5b25ff5004 [2021-04-28 15:44:07,820 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-04-28 15:44:07,864 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-04-28 15:44:07,868 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-04-28 15:44:07,868 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-04-28 15:44:07,873 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-04-28 15:44:07,874 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.04 03:44:07" (1/1) ... [2021-04-28 15:44:07,880 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5de5a286 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.04 03:44:07, skipping insertion in model container [2021-04-28 15:44:07,880 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.04 03:44:07" (1/1) ... [2021-04-28 15:44:07,888 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-04-28 15:44:07,961 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-04-28 15:44:08,316 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-ext/23_lu-fig2.fixed.i[30382,30395] [2021-04-28 15:44:08,327 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-ext/23_lu-fig2.fixed.i[30752,30765] [2021-04-28 15:44:08,340 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-04-28 15:44:08,354 INFO L203 MainTranslator]: Completed pre-run [2021-04-28 15:44:08,427 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-ext/23_lu-fig2.fixed.i[30382,30395] [2021-04-28 15:44:08,429 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-ext/23_lu-fig2.fixed.i[30752,30765] [2021-04-28 15:44:08,432 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-04-28 15:44:08,527 INFO L208 MainTranslator]: Completed translation [2021-04-28 15:44:08,527 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.04 03:44:08 WrapperNode [2021-04-28 15:44:08,527 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-04-28 15:44:08,529 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-04-28 15:44:08,529 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-04-28 15:44:08,529 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-04-28 15:44:08,538 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.04 03:44:08" (1/1) ... [2021-04-28 15:44:08,553 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.04 03:44:08" (1/1) ... [2021-04-28 15:44:08,578 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-04-28 15:44:08,584 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-04-28 15:44:08,584 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-04-28 15:44:08,584 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-04-28 15:44:08,594 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.04 03:44:08" (1/1) ... [2021-04-28 15:44:08,595 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.04 03:44:08" (1/1) ... [2021-04-28 15:44:08,612 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.04 03:44:08" (1/1) ... [2021-04-28 15:44:08,613 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.04 03:44:08" (1/1) ... [2021-04-28 15:44:08,627 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.04 03:44:08" (1/1) ... [2021-04-28 15:44:08,638 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.04 03:44:08" (1/1) ... [2021-04-28 15:44:08,643 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.04 03:44:08" (1/1) ... [2021-04-28 15:44:08,648 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-04-28 15:44:08,649 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-04-28 15:44:08,650 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-04-28 15:44:08,650 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-04-28 15:44:08,655 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.04 03:44:08" (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 [2021-04-28 15:44:08,762 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2021-04-28 15:44:08,762 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2021-04-28 15:44:08,762 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-04-28 15:44:08,762 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-04-28 15:44:08,763 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-04-28 15:44:08,763 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-04-28 15:44:08,763 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-04-28 15:44:08,763 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-04-28 15:44:08,765 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-04-28 15:44:09,484 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-04-28 15:44:09,485 INFO L299 CfgBuilder]: Removed 7 assume(true) statements. [2021-04-28 15:44:09,487 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.04 03:44:09 BoogieIcfgContainer [2021-04-28 15:44:09,487 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-04-28 15:44:09,489 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-04-28 15:44:09,490 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-04-28 15:44:09,494 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-04-28 15:44:09,494 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.04 03:44:07" (1/3) ... [2021-04-28 15:44:09,495 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5bc5380c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.04 03:44:09, skipping insertion in model container [2021-04-28 15:44:09,495 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.04 03:44:08" (2/3) ... [2021-04-28 15:44:09,496 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5bc5380c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.04 03:44:09, skipping insertion in model container [2021-04-28 15:44:09,496 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.04 03:44:09" (3/3) ... [2021-04-28 15:44:09,498 INFO L111 eAbstractionObserver]: Analyzing ICFG 23_lu-fig2.fixed.i [2021-04-28 15:44:09,505 INFO L149 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-04-28 15:44:09,512 INFO L161 ceAbstractionStarter]: Appying trace abstraction to program that has 2 error locations. [2021-04-28 15:44:09,513 INFO L323 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-04-28 15:44:09,540 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-28 15:44:09,541 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-28 15:44:09,541 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-28 15:44:09,541 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-28 15:44:09,541 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-28 15:44:09,541 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-28 15:44:09,542 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-28 15:44:09,542 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-28 15:44:09,542 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~PR_CreateThread__RES~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-28 15:44:09,542 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~PR_CreateThread__RES~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-28 15:44:09,543 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-28 15:44:09,543 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-28 15:44:09,543 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-28 15:44:09,543 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-28 15:44:09,544 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~PR_CreateThread__RES~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-28 15:44:09,544 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0___VERIFIER_atomic_thr1_#in~PR_CreateThread__RES| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-28 15:44:09,544 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0___VERIFIER_atomic_thr1_~PR_CreateThread__RES not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-28 15:44:09,544 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~PR_CreateThread__RES~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-28 15:44:09,544 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0___VERIFIER_atomic_thr1_#in~PR_CreateThread__RES| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-28 15:44:09,545 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0___VERIFIER_atomic_thr1_~PR_CreateThread__RES not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-28 15:44:09,545 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~PR_CreateThread__RES~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-28 15:44:09,545 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0___VERIFIER_atomic_thr1_#in~PR_CreateThread__RES| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-28 15:44:09,545 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0___VERIFIER_atomic_thr1_~PR_CreateThread__RES not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-28 15:44:09,545 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~PR_CreateThread__RES~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-28 15:44:09,546 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0___VERIFIER_atomic_thr1_#in~PR_CreateThread__RES| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-28 15:44:09,546 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0___VERIFIER_atomic_thr1_~PR_CreateThread__RES not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-28 15:44:09,546 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-28 15:44:09,546 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-28 15:44:09,546 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-28 15:44:09,547 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-28 15:44:09,547 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-28 15:44:09,547 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-28 15:44:09,547 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-28 15:44:09,547 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-28 15:44:09,550 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-28 15:44:09,550 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-28 15:44:09,551 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-28 15:44:09,551 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-28 15:44:09,551 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-28 15:44:09,551 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0___VERIFIER_atomic_thr1_#in~PR_CreateThread__RES| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-28 15:44:09,551 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~PR_CreateThread__RES~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-28 15:44:09,552 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-28 15:44:09,552 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0___VERIFIER_atomic_thr1_~PR_CreateThread__RES not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-28 15:44:09,555 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-04-28 15:44:09,580 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2021-04-28 15:44:09,609 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-04-28 15:44:09,609 INFO L377 AbstractCegarLoop]: Hoare is false [2021-04-28 15:44:09,609 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-04-28 15:44:09,609 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-04-28 15:44:09,609 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-04-28 15:44:09,610 INFO L381 AbstractCegarLoop]: Difference is false [2021-04-28 15:44:09,610 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-04-28 15:44:09,610 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-04-28 15:44:09,623 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 49 places, 47 transitions, 99 flow [2021-04-28 15:44:09,654 INFO L129 PetriNetUnfolder]: 2/46 cut-off events. [2021-04-28 15:44:09,654 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-04-28 15:44:09,657 INFO L84 FinitePrefix]: Finished finitePrefix Result has 50 conditions, 46 events. 2/46 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 20 event pairs, 0 based on Foata normal form. 0/42 useless extension candidates. Maximal degree in co-relation 30. Up to 2 conditions per place. [2021-04-28 15:44:09,658 INFO L82 GeneralOperation]: Start removeDead. Operand has 49 places, 47 transitions, 99 flow [2021-04-28 15:44:09,663 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 48 places, 46 transitions, 95 flow [2021-04-28 15:44:09,665 INFO L171 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-04-28 15:44:09,682 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 48 places, 46 transitions, 95 flow [2021-04-28 15:44:09,687 INFO L133 LiptonReduction]: Starting Lipton reduction on Petri net that has 48 places, 46 transitions, 95 flow [2021-04-28 15:44:09,692 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 48 places, 46 transitions, 95 flow [2021-04-28 15:44:09,704 INFO L129 PetriNetUnfolder]: 2/46 cut-off events. [2021-04-28 15:44:09,705 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-04-28 15:44:09,705 INFO L84 FinitePrefix]: Finished finitePrefix Result has 50 conditions, 46 events. 2/46 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 24 event pairs, 0 based on Foata normal form. 0/42 useless extension candidates. Maximal degree in co-relation 30. Up to 2 conditions per place. [2021-04-28 15:44:09,708 INFO L146 LiptonReduction]: Number of co-enabled transitions 378 [2021-04-28 15:44:15,526 WARN L205 SmtUtils]: Spent 198.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 68 [2021-04-28 15:44:15,797 WARN L205 SmtUtils]: Spent 183.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 68 [2021-04-28 15:44:16,735 WARN L205 SmtUtils]: Spent 164.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 63 [2021-04-28 15:44:16,980 WARN L205 SmtUtils]: Spent 171.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 63 [2021-04-28 15:44:17,819 INFO L158 LiptonReduction]: Checked pairs total: 3540 [2021-04-28 15:44:17,819 INFO L160 LiptonReduction]: Total number of compositions: 80 [2021-04-28 15:44:17,823 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 8160 [2021-04-28 15:44:17,855 INFO L129 PetriNetUnfolder]: 2/36 cut-off events. [2021-04-28 15:44:17,855 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-04-28 15:44:17,856 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-04-28 15:44:17,856 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2021-04-28 15:44:17,857 INFO L428 AbstractCegarLoop]: === Iteration 1 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-04-28 15:44:17,863 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-28 15:44:17,863 INFO L82 PathProgramCache]: Analyzing trace with hash 11841915, now seen corresponding path program 1 times [2021-04-28 15:44:17,874 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-04-28 15:44:17,874 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1556927306] [2021-04-28 15:44:17,874 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-28 15:44:17,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-28 15:44:18,063 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-28 15:44:18,065 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-04-28 15:44:18,072 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-28 15:44:18,073 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1556927306] [2021-04-28 15:44:18,075 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-04-28 15:44:18,076 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-04-28 15:44:18,076 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1486048120] [2021-04-28 15:44:18,089 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-04-28 15:44:18,089 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-04-28 15:44:18,105 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-04-28 15:44:18,108 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-04-28 15:44:18,112 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 96 out of 127 [2021-04-28 15:44:18,119 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 59 transitions, 121 flow. Second operand has 3 states, 3 states have (on average 96.66666666666667) internal successors, (290), 3 states have internal predecessors, (290), 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) [2021-04-28 15:44:18,119 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-04-28 15:44:18,119 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 96 of 127 [2021-04-28 15:44:18,121 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-04-28 15:44:18,210 INFO L129 PetriNetUnfolder]: 2/62 cut-off events. [2021-04-28 15:44:18,211 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-04-28 15:44:18,212 INFO L84 FinitePrefix]: Finished finitePrefix Result has 91 conditions, 62 events. 2/62 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 300 event pairs, 0 based on Foata normal form. 5/20 useless extension candidates. Maximal degree in co-relation 57. Up to 17 conditions per place. [2021-04-28 15:44:18,213 INFO L132 encePairwiseOnDemand]: 107/127 looper letters, 2 selfloop transitions, 2 changer transitions 42/58 dead transitions. [2021-04-28 15:44:18,213 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 58 transitions, 165 flow [2021-04-28 15:44:18,214 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-04-28 15:44:18,217 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-04-28 15:44:18,228 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 321 transitions. [2021-04-28 15:44:18,231 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.84251968503937 [2021-04-28 15:44:18,232 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 321 transitions. [2021-04-28 15:44:18,233 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 321 transitions. [2021-04-28 15:44:18,235 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-04-28 15:44:18,238 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 321 transitions. [2021-04-28 15:44:18,243 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 107.0) internal successors, (321), 3 states have internal predecessors, (321), 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) [2021-04-28 15:44:18,251 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 127.0) internal successors, (508), 4 states have internal predecessors, (508), 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) [2021-04-28 15:44:18,252 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 127.0) internal successors, (508), 4 states have internal predecessors, (508), 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) [2021-04-28 15:44:18,255 INFO L185 Difference]: Start difference. First operand has 61 places, 59 transitions, 121 flow. Second operand 3 states and 321 transitions. [2021-04-28 15:44:18,256 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 58 transitions, 165 flow [2021-04-28 15:44:18,259 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 58 transitions, 164 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-04-28 15:44:18,261 INFO L241 Difference]: Finished difference. Result has 61 places, 15 transitions, 36 flow [2021-04-28 15:44:18,264 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=127, PETRI_DIFFERENCE_MINUEND_FLOW=116, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=36, PETRI_PLACES=61, PETRI_TRANSITIONS=15} [2021-04-28 15:44:18,265 INFO L343 CegarLoopForPetriNet]: 61 programPoint places, 0 predicate places. [2021-04-28 15:44:18,265 INFO L171 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-04-28 15:44:18,266 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 61 places, 15 transitions, 36 flow [2021-04-28 15:44:18,266 INFO L133 LiptonReduction]: Starting Lipton reduction on Petri net that has 61 places, 15 transitions, 36 flow [2021-04-28 15:44:18,267 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 19 places, 15 transitions, 36 flow [2021-04-28 15:44:18,270 INFO L129 PetriNetUnfolder]: 1/15 cut-off events. [2021-04-28 15:44:18,270 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-04-28 15:44:18,271 INFO L84 FinitePrefix]: Finished finitePrefix Result has 21 conditions, 15 events. 1/15 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 22 event pairs, 0 based on Foata normal form. 0/9 useless extension candidates. Maximal degree in co-relation 14. Up to 2 conditions per place. [2021-04-28 15:44:18,271 INFO L146 LiptonReduction]: Number of co-enabled transitions 72 [2021-04-28 15:44:18,300 INFO L158 LiptonReduction]: Checked pairs total: 42 [2021-04-28 15:44:18,300 INFO L160 LiptonReduction]: Total number of compositions: 0 [2021-04-28 15:44:18,301 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 36 [2021-04-28 15:44:18,303 INFO L480 AbstractCegarLoop]: Abstraction has has 19 places, 15 transitions, 36 flow [2021-04-28 15:44:18,303 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 96.66666666666667) internal successors, (290), 3 states have internal predecessors, (290), 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) [2021-04-28 15:44:18,303 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-04-28 15:44:18,304 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2021-04-28 15:44:18,304 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-04-28 15:44:18,304 INFO L428 AbstractCegarLoop]: === Iteration 2 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-04-28 15:44:18,305 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-28 15:44:18,305 INFO L82 PathProgramCache]: Analyzing trace with hash 367130808, now seen corresponding path program 1 times [2021-04-28 15:44:18,305 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-04-28 15:44:18,306 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [151290321] [2021-04-28 15:44:18,306 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-28 15:44:18,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-28 15:44:18,370 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-28 15:44:18,371 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-04-28 15:44:18,376 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-28 15:44:18,376 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-28 15:44:18,377 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-28 15:44:18,377 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [151290321] [2021-04-28 15:44:18,378 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-04-28 15:44:18,378 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-04-28 15:44:18,378 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1802922964] [2021-04-28 15:44:18,379 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-04-28 15:44:18,380 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-04-28 15:44:18,385 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-04-28 15:44:18,386 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-04-28 15:44:18,391 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 106 out of 127 [2021-04-28 15:44:18,392 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 19 places, 15 transitions, 36 flow. Second operand has 3 states, 3 states have (on average 106.66666666666667) internal successors, (320), 3 states have internal predecessors, (320), 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) [2021-04-28 15:44:18,392 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-04-28 15:44:18,392 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 106 of 127 [2021-04-28 15:44:18,392 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-04-28 15:44:18,408 INFO L129 PetriNetUnfolder]: 3/21 cut-off events. [2021-04-28 15:44:18,409 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-04-28 15:44:18,409 INFO L84 FinitePrefix]: Finished finitePrefix Result has 38 conditions, 21 events. 3/21 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 48 event pairs, 0 based on Foata normal form. 0/14 useless extension candidates. Maximal degree in co-relation 29. Up to 6 conditions per place. [2021-04-28 15:44:18,410 INFO L132 encePairwiseOnDemand]: 123/127 looper letters, 2 selfloop transitions, 3 changer transitions 1/16 dead transitions. [2021-04-28 15:44:18,410 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 21 places, 16 transitions, 50 flow [2021-04-28 15:44:18,411 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-04-28 15:44:18,411 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-04-28 15:44:18,417 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 324 transitions. [2021-04-28 15:44:18,420 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8503937007874016 [2021-04-28 15:44:18,420 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 324 transitions. [2021-04-28 15:44:18,420 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 324 transitions. [2021-04-28 15:44:18,421 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-04-28 15:44:18,421 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 324 transitions. [2021-04-28 15:44:18,424 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 108.0) internal successors, (324), 3 states have internal predecessors, (324), 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) [2021-04-28 15:44:18,429 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 127.0) internal successors, (508), 4 states have internal predecessors, (508), 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) [2021-04-28 15:44:18,429 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 127.0) internal successors, (508), 4 states have internal predecessors, (508), 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) [2021-04-28 15:44:18,430 INFO L185 Difference]: Start difference. First operand has 19 places, 15 transitions, 36 flow. Second operand 3 states and 324 transitions. [2021-04-28 15:44:18,430 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 21 places, 16 transitions, 50 flow [2021-04-28 15:44:18,430 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 19 places, 16 transitions, 46 flow, removed 0 selfloop flow, removed 2 redundant places. [2021-04-28 15:44:18,431 INFO L241 Difference]: Finished difference. Result has 21 places, 15 transitions, 48 flow [2021-04-28 15:44:18,432 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=127, PETRI_DIFFERENCE_MINUEND_FLOW=32, PETRI_DIFFERENCE_MINUEND_PLACES=17, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=15, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=12, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=48, PETRI_PLACES=21, PETRI_TRANSITIONS=15} [2021-04-28 15:44:18,432 INFO L343 CegarLoopForPetriNet]: 61 programPoint places, -40 predicate places. [2021-04-28 15:44:18,432 INFO L171 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-04-28 15:44:18,433 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 21 places, 15 transitions, 48 flow [2021-04-28 15:44:18,433 INFO L133 LiptonReduction]: Starting Lipton reduction on Petri net that has 21 places, 15 transitions, 48 flow [2021-04-28 15:44:18,434 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 21 places, 15 transitions, 48 flow [2021-04-28 15:44:18,438 INFO L129 PetriNetUnfolder]: 1/17 cut-off events. [2021-04-28 15:44:18,438 INFO L130 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2021-04-28 15:44:18,439 INFO L84 FinitePrefix]: Finished finitePrefix Result has 31 conditions, 17 events. 1/17 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 31 event pairs, 0 based on Foata normal form. 0/12 useless extension candidates. Maximal degree in co-relation 22. Up to 5 conditions per place. [2021-04-28 15:44:18,440 INFO L146 LiptonReduction]: Number of co-enabled transitions 40 [2021-04-28 15:44:18,595 INFO L158 LiptonReduction]: Checked pairs total: 40 [2021-04-28 15:44:18,595 INFO L160 LiptonReduction]: Total number of compositions: 2 [2021-04-28 15:44:18,595 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 163 [2021-04-28 15:44:18,597 INFO L480 AbstractCegarLoop]: Abstraction has has 21 places, 15 transitions, 48 flow [2021-04-28 15:44:18,597 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 106.66666666666667) internal successors, (320), 3 states have internal predecessors, (320), 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) [2021-04-28 15:44:18,597 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-04-28 15:44:18,598 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-04-28 15:44:18,598 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-04-28 15:44:18,598 INFO L428 AbstractCegarLoop]: === Iteration 3 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-04-28 15:44:18,598 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-28 15:44:18,599 INFO L82 PathProgramCache]: Analyzing trace with hash 625863889, now seen corresponding path program 1 times [2021-04-28 15:44:18,599 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-04-28 15:44:18,599 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1914420950] [2021-04-28 15:44:18,599 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-28 15:44:18,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-28 15:44:18,669 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-28 15:44:18,671 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-28 15:44:18,679 INFO L142 QuantifierPusher]: treesize reduction 4, result has 50.0 percent of original size [2021-04-28 15:44:18,680 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-04-28 15:44:18,684 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-28 15:44:18,685 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 8 [2021-04-28 15:44:18,692 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-28 15:44:18,693 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-28 15:44:18,693 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-28 15:44:18,694 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1914420950] [2021-04-28 15:44:18,694 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-04-28 15:44:18,694 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-04-28 15:44:18,694 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [643418166] [2021-04-28 15:44:18,695 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-04-28 15:44:18,695 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-04-28 15:44:18,696 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-04-28 15:44:18,696 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-04-28 15:44:18,698 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 91 out of 129 [2021-04-28 15:44:18,698 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 21 places, 15 transitions, 48 flow. Second operand has 4 states, 4 states have (on average 92.25) internal successors, (369), 4 states have internal predecessors, (369), 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) [2021-04-28 15:44:18,699 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-04-28 15:44:18,699 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 91 of 129 [2021-04-28 15:44:18,699 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-04-28 15:44:18,732 INFO L129 PetriNetUnfolder]: 2/21 cut-off events. [2021-04-28 15:44:18,732 INFO L130 PetriNetUnfolder]: For 10/18 co-relation queries the response was YES. [2021-04-28 15:44:18,733 INFO L84 FinitePrefix]: Finished finitePrefix Result has 55 conditions, 21 events. 2/21 cut-off events. For 10/18 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 37 event pairs, 0 based on Foata normal form. 2/19 useless extension candidates. Maximal degree in co-relation 44. Up to 8 conditions per place. [2021-04-28 15:44:18,733 INFO L132 encePairwiseOnDemand]: 120/129 looper letters, 1 selfloop transitions, 7 changer transitions 3/16 dead transitions. [2021-04-28 15:44:18,733 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 24 places, 16 transitions, 74 flow [2021-04-28 15:44:18,734 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-04-28 15:44:18,734 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2021-04-28 15:44:18,735 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 376 transitions. [2021-04-28 15:44:18,735 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.7286821705426356 [2021-04-28 15:44:18,736 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 376 transitions. [2021-04-28 15:44:18,736 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 376 transitions. [2021-04-28 15:44:18,736 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-04-28 15:44:18,736 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 376 transitions. [2021-04-28 15:44:18,738 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 94.0) internal successors, (376), 4 states have internal predecessors, (376), 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) [2021-04-28 15:44:18,739 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 129.0) internal successors, (645), 5 states have internal predecessors, (645), 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) [2021-04-28 15:44:18,740 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 129.0) internal successors, (645), 5 states have internal predecessors, (645), 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) [2021-04-28 15:44:18,740 INFO L185 Difference]: Start difference. First operand has 21 places, 15 transitions, 48 flow. Second operand 4 states and 376 transitions. [2021-04-28 15:44:18,740 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 24 places, 16 transitions, 74 flow [2021-04-28 15:44:18,741 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 22 places, 16 transitions, 68 flow, removed 0 selfloop flow, removed 2 redundant places. [2021-04-28 15:44:18,742 INFO L241 Difference]: Finished difference. Result has 22 places, 13 transitions, 50 flow [2021-04-28 15:44:18,742 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=129, PETRI_DIFFERENCE_MINUEND_FLOW=42, PETRI_DIFFERENCE_MINUEND_PLACES=19, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=15, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=8, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=50, PETRI_PLACES=22, PETRI_TRANSITIONS=13} [2021-04-28 15:44:18,742 INFO L343 CegarLoopForPetriNet]: 61 programPoint places, -39 predicate places. [2021-04-28 15:44:18,742 INFO L171 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-04-28 15:44:18,742 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 22 places, 13 transitions, 50 flow [2021-04-28 15:44:18,743 INFO L133 LiptonReduction]: Starting Lipton reduction on Petri net that has 22 places, 13 transitions, 50 flow [2021-04-28 15:44:18,743 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 20 places, 13 transitions, 50 flow [2021-04-28 15:44:18,747 INFO L129 PetriNetUnfolder]: 1/17 cut-off events. [2021-04-28 15:44:18,747 INFO L130 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2021-04-28 15:44:18,748 INFO L84 FinitePrefix]: Finished finitePrefix Result has 39 conditions, 17 events. 1/17 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 23 event pairs, 0 based on Foata normal form. 0/14 useless extension candidates. Maximal degree in co-relation 30. Up to 7 conditions per place. [2021-04-28 15:44:18,748 INFO L146 LiptonReduction]: Number of co-enabled transitions 18 [2021-04-28 15:44:19,043 WARN L205 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 41 [2021-04-28 15:44:19,236 INFO L158 LiptonReduction]: Checked pairs total: 6 [2021-04-28 15:44:19,237 INFO L160 LiptonReduction]: Total number of compositions: 3 [2021-04-28 15:44:19,237 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 495 [2021-04-28 15:44:19,238 INFO L480 AbstractCegarLoop]: Abstraction has has 20 places, 13 transitions, 50 flow [2021-04-28 15:44:19,239 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 92.25) internal successors, (369), 4 states have internal predecessors, (369), 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) [2021-04-28 15:44:19,239 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-04-28 15:44:19,239 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-04-28 15:44:19,240 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-04-28 15:44:19,240 INFO L428 AbstractCegarLoop]: === Iteration 4 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-04-28 15:44:19,240 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-28 15:44:19,240 INFO L82 PathProgramCache]: Analyzing trace with hash -1528137509, now seen corresponding path program 1 times [2021-04-28 15:44:19,241 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-04-28 15:44:19,241 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [11274032] [2021-04-28 15:44:19,241 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-28 15:44:19,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-28 15:44:19,316 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-28 15:44:19,319 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-04-28 15:44:19,325 INFO L142 QuantifierPusher]: treesize reduction 9, result has 43.8 percent of original size [2021-04-28 15:44:19,326 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-28 15:44:19,332 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-28 15:44:19,332 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [11274032] [2021-04-28 15:44:19,332 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-04-28 15:44:19,333 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-04-28 15:44:19,333 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [363406210] [2021-04-28 15:44:19,333 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-04-28 15:44:19,333 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-04-28 15:44:19,334 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-04-28 15:44:19,334 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-04-28 15:44:19,336 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 98 out of 132 [2021-04-28 15:44:19,336 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 20 places, 13 transitions, 50 flow. Second operand has 4 states, 4 states have (on average 98.75) internal successors, (395), 4 states have internal predecessors, (395), 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) [2021-04-28 15:44:19,337 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-04-28 15:44:19,337 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 98 of 132 [2021-04-28 15:44:19,337 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-04-28 15:44:19,360 INFO L129 PetriNetUnfolder]: 1/14 cut-off events. [2021-04-28 15:44:19,360 INFO L130 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2021-04-28 15:44:19,360 INFO L84 FinitePrefix]: Finished finitePrefix Result has 39 conditions, 14 events. 1/14 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 23 event pairs, 0 based on Foata normal form. 3/14 useless extension candidates. Maximal degree in co-relation 28. Up to 5 conditions per place. [2021-04-28 15:44:19,360 INFO L132 encePairwiseOnDemand]: 126/132 looper letters, 0 selfloop transitions, 0 changer transitions 12/12 dead transitions. [2021-04-28 15:44:19,361 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 22 places, 12 transitions, 56 flow [2021-04-28 15:44:19,361 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-04-28 15:44:19,361 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2021-04-28 15:44:19,362 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 398 transitions. [2021-04-28 15:44:19,363 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.7537878787878788 [2021-04-28 15:44:19,363 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 398 transitions. [2021-04-28 15:44:19,363 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 398 transitions. [2021-04-28 15:44:19,364 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-04-28 15:44:19,364 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 398 transitions. [2021-04-28 15:44:19,365 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 99.5) internal successors, (398), 4 states have internal predecessors, (398), 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) [2021-04-28 15:44:19,367 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 132.0) internal successors, (660), 5 states have internal predecessors, (660), 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) [2021-04-28 15:44:19,368 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 132.0) internal successors, (660), 5 states have internal predecessors, (660), 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) [2021-04-28 15:44:19,368 INFO L185 Difference]: Start difference. First operand has 20 places, 13 transitions, 50 flow. Second operand 4 states and 398 transitions. [2021-04-28 15:44:19,368 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 22 places, 12 transitions, 56 flow [2021-04-28 15:44:19,369 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 19 places, 12 transitions, 45 flow, removed 1 selfloop flow, removed 3 redundant places. [2021-04-28 15:44:19,369 INFO L241 Difference]: Finished difference. Result has 19 places, 0 transitions, 0 flow [2021-04-28 15:44:19,369 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=132, PETRI_DIFFERENCE_MINUEND_FLOW=35, PETRI_DIFFERENCE_MINUEND_PLACES=16, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=12, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=12, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=0, PETRI_PLACES=19, PETRI_TRANSITIONS=0} [2021-04-28 15:44:19,369 INFO L343 CegarLoopForPetriNet]: 61 programPoint places, -42 predicate places. [2021-04-28 15:44:19,370 INFO L171 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-04-28 15:44:19,370 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 19 places, 0 transitions, 0 flow [2021-04-28 15:44:19,370 INFO L133 LiptonReduction]: Starting Lipton reduction on Petri net that has 19 places, 0 transitions, 0 flow [2021-04-28 15:44:19,370 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 0 places, 0 transitions, 0 flow [2021-04-28 15:44:19,371 INFO L129 PetriNetUnfolder]: 0/0 cut-off events. [2021-04-28 15:44:19,371 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-04-28 15:44:19,371 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. [2021-04-28 15:44:19,371 INFO L146 LiptonReduction]: Number of co-enabled transitions 0 [2021-04-28 15:44:19,371 INFO L158 LiptonReduction]: Checked pairs total: 0 [2021-04-28 15:44:19,371 INFO L160 LiptonReduction]: Total number of compositions: 0 [2021-04-28 15:44:19,372 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 2 [2021-04-28 15:44:19,373 INFO L480 AbstractCegarLoop]: Abstraction has has 0 places, 0 transitions, 0 flow [2021-04-28 15:44:19,373 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 98.75) internal successors, (395), 4 states have internal predecessors, (395), 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) [2021-04-28 15:44:19,374 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-04-28 15:44:19,378 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.04 03:44:19 BasicIcfg [2021-04-28 15:44:19,378 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-04-28 15:44:19,380 INFO L168 Benchmark]: Toolchain (without parser) took 11556.34 ms. Allocated memory was 320.9 MB in the beginning and 503.3 MB in the end (delta: 182.5 MB). Free memory was 294.8 MB in the beginning and 262.0 MB in the end (delta: 32.8 MB). Peak memory consumption was 216.6 MB. Max. memory is 16.0 GB. [2021-04-28 15:44:19,380 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 320.9 MB. Free memory is still 289.5 MB. There was no memory consumed. Max. memory is 16.0 GB. [2021-04-28 15:44:19,381 INFO L168 Benchmark]: CACSL2BoogieTranslator took 659.77 ms. Allocated memory is still 320.9 MB. Free memory was 291.6 MB in the beginning and 290.3 MB in the end (delta: 1.3 MB). Peak memory consumption was 24.7 MB. Max. memory is 16.0 GB. [2021-04-28 15:44:19,381 INFO L168 Benchmark]: Boogie Procedure Inliner took 53.56 ms. Allocated memory is still 320.9 MB. Free memory was 290.3 MB in the beginning and 287.8 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-04-28 15:44:19,382 INFO L168 Benchmark]: Boogie Preprocessor took 65.21 ms. Allocated memory is still 320.9 MB. Free memory was 287.8 MB in the beginning and 286.8 MB in the end (delta: 1.0 MB). There was no memory consumed. Max. memory is 16.0 GB. [2021-04-28 15:44:19,383 INFO L168 Benchmark]: RCFGBuilder took 837.95 ms. Allocated memory is still 320.9 MB. Free memory was 286.8 MB in the beginning and 242.0 MB in the end (delta: 44.7 MB). Peak memory consumption was 44.0 MB. Max. memory is 16.0 GB. [2021-04-28 15:44:19,383 INFO L168 Benchmark]: TraceAbstraction took 9888.87 ms. Allocated memory was 320.9 MB in the beginning and 503.3 MB in the end (delta: 182.5 MB). Free memory was 242.0 MB in the beginning and 262.0 MB in the end (delta: -20.0 MB). Peak memory consumption was 162.5 MB. Max. memory is 16.0 GB. [2021-04-28 15:44:19,387 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 320.9 MB. Free memory is still 289.5 MB. There was no memory consumed. Max. memory is 16.0 GB. * CACSL2BoogieTranslator took 659.77 ms. Allocated memory is still 320.9 MB. Free memory was 291.6 MB in the beginning and 290.3 MB in the end (delta: 1.3 MB). Peak memory consumption was 24.7 MB. Max. memory is 16.0 GB. * Boogie Procedure Inliner took 53.56 ms. Allocated memory is still 320.9 MB. Free memory was 290.3 MB in the beginning and 287.8 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * Boogie Preprocessor took 65.21 ms. Allocated memory is still 320.9 MB. Free memory was 287.8 MB in the beginning and 286.8 MB in the end (delta: 1.0 MB). There was no memory consumed. Max. memory is 16.0 GB. * RCFGBuilder took 837.95 ms. Allocated memory is still 320.9 MB. Free memory was 286.8 MB in the beginning and 242.0 MB in the end (delta: 44.7 MB). Peak memory consumption was 44.0 MB. Max. memory is 16.0 GB. * TraceAbstraction took 9888.87 ms. Allocated memory was 320.9 MB in the beginning and 503.3 MB in the end (delta: 182.5 MB). Free memory was 242.0 MB in the beginning and 262.0 MB in the end (delta: -20.0 MB). Peak memory consumption was 162.5 MB. Max. memory is 16.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 8132.1ms, 48 PlacesBefore, 61 PlacesAfterwards, 46 TransitionsBefore, 59 TransitionsAfterwards, 378 CoEnabledTransitionPairs, 7 FixpointIterations, 42 TrivialSequentialCompositions, 35 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 2 ConcurrentYvCompositions, 1 ChoiceCompositions, 80 TotalNumberOfCompositions, 3540 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 1780, positive: 1600, positive conditional: 1600, positive unconditional: 0, negative: 180, negative conditional: 180, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 503, positive: 477, positive conditional: 0, positive unconditional: 477, negative: 26, negative conditional: 0, negative unconditional: 26, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 503, positive: 477, positive conditional: 0, positive unconditional: 477, negative: 26, negative conditional: 0, negative unconditional: 26, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 503, positive: 435, positive conditional: 0, positive unconditional: 435, negative: 68, negative conditional: 0, negative unconditional: 68, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 68, positive: 42, positive conditional: 0, positive unconditional: 42, negative: 26, negative conditional: 0, negative unconditional: 26, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 354, positive: 205, positive conditional: 0, positive unconditional: 205, negative: 149, negative conditional: 0, negative unconditional: 149, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 1780, positive: 1123, positive conditional: 1123, positive unconditional: 0, negative: 154, negative conditional: 154, negative unconditional: 0, unknown: 503, unknown conditional: 503, unknown unconditional: 0] , Statistics on independence cache: Total cache size (in pairs): 490, Positive cache size: 465, Positive conditional cache size: 465, Positive unconditional cache size: 0, Negative cache size: 25, Negative conditional cache size: 25, Negative unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 34.3ms, 61 PlacesBefore, 19 PlacesAfterwards, 15 TransitionsBefore, 15 TransitionsAfterwards, 72 CoEnabledTransitionPairs, 1 FixpointIterations, 0 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 0 TotalNumberOfCompositions, 42 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 20, positive: 12, positive conditional: 12, positive unconditional: 0, negative: 8, negative conditional: 8, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 6, positive: 4, positive conditional: 2, positive unconditional: 2, negative: 2, negative conditional: 1, negative unconditional: 1, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 6, positive: 4, positive conditional: 2, positive unconditional: 2, negative: 2, negative conditional: 1, negative unconditional: 1, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 6, positive: 2, positive conditional: 0, positive unconditional: 2, negative: 4, negative conditional: 0, negative unconditional: 4, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 4, positive: 2, positive conditional: 1, positive unconditional: 1, negative: 2, negative conditional: 1, negative unconditional: 1, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 24, positive: 11, positive conditional: 7, positive unconditional: 5, negative: 13, negative conditional: 7, negative unconditional: 6, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 20, positive: 8, positive conditional: 8, positive unconditional: 0, negative: 6, negative conditional: 6, negative unconditional: 0, unknown: 6, unknown conditional: 6, unknown unconditional: 0] , Statistics on independence cache: Total cache size (in pairs): 496, Positive cache size: 469, Positive conditional cache size: 469, Positive unconditional cache size: 0, Negative cache size: 27, Negative conditional cache size: 27, Negative unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 161.5ms, 21 PlacesBefore, 21 PlacesAfterwards, 15 TransitionsBefore, 15 TransitionsAfterwards, 40 CoEnabledTransitionPairs, 2 FixpointIterations, 0 TrivialSequentialCompositions, 2 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 2 TotalNumberOfCompositions, 40 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 34, positive: 22, positive conditional: 22, positive unconditional: 0, negative: 12, negative conditional: 12, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 7, positive: 3, positive conditional: 0, positive unconditional: 3, negative: 4, negative conditional: 0, negative unconditional: 4, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 7, positive: 3, positive conditional: 0, positive unconditional: 3, negative: 4, negative conditional: 0, negative unconditional: 4, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 7, positive: 3, positive conditional: 0, positive unconditional: 3, negative: 4, negative conditional: 0, negative unconditional: 4, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 4, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 4, negative conditional: 0, negative unconditional: 4, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 24, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 24, negative conditional: 0, negative unconditional: 24, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 34, positive: 19, positive conditional: 19, positive unconditional: 0, negative: 8, negative conditional: 8, negative unconditional: 0, unknown: 7, unknown conditional: 7, unknown unconditional: 0] , Statistics on independence cache: Total cache size (in pairs): 503, Positive cache size: 472, Positive conditional cache size: 472, Positive unconditional cache size: 0, Negative cache size: 31, Negative conditional cache size: 31, Negative unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 494.0ms, 22 PlacesBefore, 20 PlacesAfterwards, 13 TransitionsBefore, 13 TransitionsAfterwards, 18 CoEnabledTransitionPairs, 2 FixpointIterations, 0 TrivialSequentialCompositions, 3 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 3 TotalNumberOfCompositions, 6 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 6, positive: 3, positive conditional: 3, positive unconditional: 0, negative: 3, negative conditional: 3, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 3, positive: 3, positive conditional: 3, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 3, positive: 3, positive conditional: 3, 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: 3, positive: 3, positive conditional: 0, positive unconditional: 3, 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: 6, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 3, negative conditional: 3, negative unconditional: 0, unknown: 3, unknown conditional: 3, unknown unconditional: 0] , Statistics on independence cache: Total cache size (in pairs): 506, Positive cache size: 475, Positive conditional cache size: 475, Positive unconditional cache size: 0, Negative cache size: 31, Negative conditional cache size: 31, Negative unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 1.2ms, 19 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: 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: 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: 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): 506, Positive cache size: 475, Positive conditional cache size: 475, Positive unconditional cache size: 0, Negative cache size: 31, Negative conditional cache size: 31, Negative unconditional cache size: 0 - PositiveResult [Line: 707]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 721]: 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 2 procedures, 46 locations, 2 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 20.0ms, RemoveRedundantFlowTime: 0.0ms, RemoveRedundantFlowUnfoldingTime: 0.0ms, BackfoldingTime: 0.0ms, BackfoldingUnfoldingTime: 0.0ms, FlowIncreaseByBackfolding: 0, BasicCegarLoop: VerificationResult: SAFE, OverallTime: 9771.4ms, OverallIterations: 4, TraceHistogramMax: 1, EmptinessCheckTime: 0.0ms, AutomataDifference: 291.7ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 8225.1ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 24 SDtfs, 4 SDslu, 0 SDs, 0 SdLazy, 43 SolverSat, 25 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 79.1ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 26.2ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=121occurred in iteration=0, InterpolantAutomatonStates: 14, 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: 12.1ms SsaConstructionTime, 75.9ms SatisfiabilityAnalysisTime, 258.0ms InterpolantComputationTime, 24 NumberOfCodeBlocks, 24 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 20 ConstructedInterpolants, 0 QuantifiedInterpolants, 68 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 4 InterpolantComputations, 4 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...