/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-wmm/safe036_tso.opt.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-d5b4239aa45c8d22a30959944f2ef622f7386a6d-d5b4239 [2021-03-26 00:52:03,605 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-03-26 00:52:03,606 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-03-26 00:52:03,625 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-03-26 00:52:03,625 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-03-26 00:52:03,626 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-03-26 00:52:03,627 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-03-26 00:52:03,628 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-03-26 00:52:03,629 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-03-26 00:52:03,629 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-03-26 00:52:03,630 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-03-26 00:52:03,631 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-03-26 00:52:03,631 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-03-26 00:52:03,632 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-03-26 00:52:03,632 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-03-26 00:52:03,637 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-03-26 00:52:03,638 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-03-26 00:52:03,638 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-03-26 00:52:03,639 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-03-26 00:52:03,641 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-03-26 00:52:03,642 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-03-26 00:52:03,647 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-03-26 00:52:03,647 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-03-26 00:52:03,648 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-03-26 00:52:03,650 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-03-26 00:52:03,659 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-03-26 00:52:03,661 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-03-26 00:52:03,662 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-03-26 00:52:03,662 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 [2021-03-26 00:52:03,692 INFO L113 SettingsManager]: Loading preferences was successful [2021-03-26 00:52:03,693 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-03-26 00:52:03,693 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-03-26 00:52:03,694 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-03-26 00:52:03,694 INFO L138 SettingsManager]: * Use SBE=true [2021-03-26 00:52:03,694 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-03-26 00:52:03,694 INFO L138 SettingsManager]: * sizeof long=4 [2021-03-26 00:52:03,694 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-03-26 00:52:03,694 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-03-26 00:52:03,694 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-03-26 00:52:03,694 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-03-26 00:52:03,694 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-03-26 00:52:03,694 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-03-26 00:52:03,695 INFO L138 SettingsManager]: * sizeof long double=12 [2021-03-26 00:52:03,695 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-03-26 00:52:03,695 INFO L138 SettingsManager]: * Use constant arrays=true [2021-03-26 00:52:03,695 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-03-26 00:52:03,695 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-03-26 00:52:03,695 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-03-26 00:52:03,695 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-03-26 00:52:03,695 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-03-26 00:52:03,695 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-03-26 00:52:03,695 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-03-26 00:52:03,696 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-03-26 00:52:03,696 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-03-26 00:52:03,696 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-03-26 00:52:03,696 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-03-26 00:52:03,696 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=SEMANTIC_BASED_MOVER_CHECK_WITH_PREDICATES [2021-03-26 00:52:03,696 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-03-26 00:52:03,696 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-03-26 00:52:03,696 INFO L138 SettingsManager]: * Apply repeated Lipton Reduction=true WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-03-26 00:52:03,920 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-03-26 00:52:03,934 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-03-26 00:52:03,936 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-03-26 00:52:03,937 INFO L271 PluginConnector]: Initializing CDTParser... [2021-03-26 00:52:03,937 INFO L275 PluginConnector]: CDTParser initialized [2021-03-26 00:52:03,938 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe036_tso.opt.i [2021-03-26 00:52:03,998 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/aae668284/850eb85ac842459dacc5ec73c86eac33/FLAG75d01530f [2021-03-26 00:52:04,342 INFO L306 CDTParser]: Found 1 translation units. [2021-03-26 00:52:04,342 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe036_tso.opt.i [2021-03-26 00:52:04,361 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/aae668284/850eb85ac842459dacc5ec73c86eac33/FLAG75d01530f [2021-03-26 00:52:04,724 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/aae668284/850eb85ac842459dacc5ec73c86eac33 [2021-03-26 00:52:04,725 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-03-26 00:52:04,726 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-03-26 00:52:04,727 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-03-26 00:52:04,727 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-03-26 00:52:04,736 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-03-26 00:52:04,736 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.03 12:52:04" (1/1) ... [2021-03-26 00:52:04,737 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7ede4e32 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.03 12:52:04, skipping insertion in model container [2021-03-26 00:52:04,737 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.03 12:52:04" (1/1) ... [2021-03-26 00:52:04,743 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-03-26 00:52:04,765 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-03-26 00:52:04,843 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-wmm/safe036_tso.opt.i[949,962] [2021-03-26 00:52:04,976 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-03-26 00:52:04,982 INFO L203 MainTranslator]: Completed pre-run [2021-03-26 00:52:04,990 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-wmm/safe036_tso.opt.i[949,962] [2021-03-26 00:52:05,018 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-03-26 00:52:05,057 INFO L208 MainTranslator]: Completed translation [2021-03-26 00:52:05,058 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.03 12:52:05 WrapperNode [2021-03-26 00:52:05,058 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-03-26 00:52:05,058 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-03-26 00:52:05,059 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-03-26 00:52:05,059 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-03-26 00:52:05,072 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.03 12:52:05" (1/1) ... [2021-03-26 00:52:05,090 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.03 12:52:05" (1/1) ... [2021-03-26 00:52:05,106 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-03-26 00:52:05,107 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-03-26 00:52:05,107 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-03-26 00:52:05,107 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-03-26 00:52:05,112 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.03 12:52:05" (1/1) ... [2021-03-26 00:52:05,112 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.03 12:52:05" (1/1) ... [2021-03-26 00:52:05,118 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.03 12:52:05" (1/1) ... [2021-03-26 00:52:05,118 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.03 12:52:05" (1/1) ... [2021-03-26 00:52:05,133 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.03 12:52:05" (1/1) ... [2021-03-26 00:52:05,135 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.03 12:52:05" (1/1) ... [2021-03-26 00:52:05,136 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.03 12:52:05" (1/1) ... [2021-03-26 00:52:05,137 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-03-26 00:52:05,137 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-03-26 00:52:05,138 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-03-26 00:52:05,138 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-03-26 00:52:05,138 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.03 12:52:05" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-03-26 00:52:05,189 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-03-26 00:52:05,190 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-03-26 00:52:05,190 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-03-26 00:52:05,190 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-03-26 00:52:05,190 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2021-03-26 00:52:05,190 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2021-03-26 00:52:05,190 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2021-03-26 00:52:05,190 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2021-03-26 00:52:05,190 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-03-26 00:52:05,191 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-03-26 00:52:05,191 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-03-26 00:52:05,191 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-03-26 00:52:05,192 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-03-26 00:52:05,419 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-03-26 00:52:05,419 INFO L299 CfgBuilder]: Removed 8 assume(true) statements. [2021-03-26 00:52:05,420 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.03 12:52:05 BoogieIcfgContainer [2021-03-26 00:52:05,420 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-03-26 00:52:05,421 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-03-26 00:52:05,421 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-03-26 00:52:05,423 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-03-26 00:52:05,423 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.03 12:52:04" (1/3) ... [2021-03-26 00:52:05,423 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2045e454 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.03 12:52:05, skipping insertion in model container [2021-03-26 00:52:05,424 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.03 12:52:05" (2/3) ... [2021-03-26 00:52:05,424 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2045e454 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.03 12:52:05, skipping insertion in model container [2021-03-26 00:52:05,424 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.03 12:52:05" (3/3) ... [2021-03-26 00:52:05,425 INFO L111 eAbstractionObserver]: Analyzing ICFG safe036_tso.opt.i [2021-03-26 00:52:05,428 INFO L149 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-03-26 00:52:05,431 INFO L161 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-03-26 00:52:05,432 INFO L323 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-03-26 00:52:05,446 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 00:52:05,446 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 00:52:05,446 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 00:52:05,446 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 00:52:05,447 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 00:52:05,447 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 00:52:05,447 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 00:52:05,447 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 00:52:05,447 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 00:52:05,447 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 00:52:05,448 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 00:52:05,448 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 00:52:05,448 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 00:52:05,448 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 00:52:05,448 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 00:52:05,448 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 00:52:05,448 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 00:52:05,448 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 00:52:05,449 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 00:52:05,449 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 00:52:05,449 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 00:52:05,449 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 00:52:05,449 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 00:52:05,449 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 00:52:05,451 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 00:52:05,451 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 00:52:05,451 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 00:52:05,451 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 00:52:05,454 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 00:52:05,454 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 00:52:05,455 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 00:52:05,455 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 00:52:05,456 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-03-26 00:52:05,468 INFO L253 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2021-03-26 00:52:05,481 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-03-26 00:52:05,482 INFO L377 AbstractCegarLoop]: Hoare is false [2021-03-26 00:52:05,482 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-03-26 00:52:05,482 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-03-26 00:52:05,482 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-03-26 00:52:05,482 INFO L381 AbstractCegarLoop]: Difference is false [2021-03-26 00:52:05,482 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-03-26 00:52:05,482 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-03-26 00:52:05,489 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 66 places, 61 transitions, 132 flow [2021-03-26 00:52:05,509 INFO L129 PetriNetUnfolder]: 2/59 cut-off events. [2021-03-26 00:52:05,509 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-26 00:52:05,511 INFO L84 FinitePrefix]: Finished finitePrefix Result has 66 conditions, 59 events. 2/59 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 37 event pairs, 0 based on Foata normal form. 0/56 useless extension candidates. Maximal degree in co-relation 42. Up to 2 conditions per place. [2021-03-26 00:52:05,511 INFO L82 GeneralOperation]: Start removeDead. Operand has 66 places, 61 transitions, 132 flow [2021-03-26 00:52:05,514 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 55 places, 49 transitions, 104 flow [2021-03-26 00:52:05,515 INFO L170 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-03-26 00:52:05,523 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 55 places, 49 transitions, 104 flow [2021-03-26 00:52:05,525 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 55 places, 49 transitions, 104 flow [2021-03-26 00:52:05,526 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 55 places, 49 transitions, 104 flow [2021-03-26 00:52:05,534 INFO L129 PetriNetUnfolder]: 1/49 cut-off events. [2021-03-26 00:52:05,534 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-26 00:52:05,534 INFO L84 FinitePrefix]: Finished finitePrefix Result has 56 conditions, 49 events. 1/49 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 31 event pairs, 0 based on Foata normal form. 0/48 useless extension candidates. Maximal degree in co-relation 32. Up to 2 conditions per place. [2021-03-26 00:52:05,536 INFO L142 LiptonReduction]: Number of co-enabled transitions 456 [2021-03-26 00:52:06,300 INFO L154 LiptonReduction]: Checked pairs total: 568 [2021-03-26 00:52:06,301 INFO L156 LiptonReduction]: Total number of compositions: 33 [2021-03-26 00:52:06,302 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 788 [2021-03-26 00:52:06,311 INFO L129 PetriNetUnfolder]: 0/14 cut-off events. [2021-03-26 00:52:06,311 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-26 00:52:06,311 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-26 00:52:06,312 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-26 00:52:06,312 INFO L428 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-26 00:52:06,315 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-26 00:52:06,315 INFO L82 PathProgramCache]: Analyzing trace with hash -432047333, now seen corresponding path program 1 times [2021-03-26 00:52:06,320 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-26 00:52:06,320 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1190893772] [2021-03-26 00:52:06,320 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-26 00:52:06,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-26 00:52:06,440 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 00:52:06,441 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-26 00:52:06,441 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 00:52:06,441 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-26 00:52:06,445 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 00:52:06,445 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-26 00:52:06,448 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 00:52:06,448 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-26 00:52:06,449 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-26 00:52:06,450 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1190893772] [2021-03-26 00:52:06,450 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-26 00:52:06,450 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-03-26 00:52:06,450 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2035598040] [2021-03-26 00:52:06,455 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-03-26 00:52:06,455 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-26 00:52:06,462 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-03-26 00:52:06,463 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-03-26 00:52:06,464 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 94 [2021-03-26 00:52:06,466 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 23 places, 16 transitions, 38 flow. Second operand has 4 states, 4 states have (on average 71.75) internal successors, (287), 4 states have internal predecessors, (287), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 00:52:06,466 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-26 00:52:06,466 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 94 [2021-03-26 00:52:06,467 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-26 00:52:06,496 INFO L129 PetriNetUnfolder]: 6/33 cut-off events. [2021-03-26 00:52:06,496 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-26 00:52:06,496 INFO L84 FinitePrefix]: Finished finitePrefix Result has 61 conditions, 33 events. 6/33 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 66 event pairs, 2 based on Foata normal form. 4/37 useless extension candidates. Maximal degree in co-relation 49. Up to 15 conditions per place. [2021-03-26 00:52:06,497 INFO L132 encePairwiseOnDemand]: 89/94 looper letters, 4 selfloop transitions, 3 changer transitions 5/23 dead transitions. [2021-03-26 00:52:06,497 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 27 places, 23 transitions, 76 flow [2021-03-26 00:52:06,498 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-03-26 00:52:06,499 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-03-26 00:52:06,507 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 369 transitions. [2021-03-26 00:52:06,510 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.7851063829787234 [2021-03-26 00:52:06,512 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 369 transitions. [2021-03-26 00:52:06,512 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 369 transitions. [2021-03-26 00:52:06,515 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-26 00:52:06,517 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 369 transitions. [2021-03-26 00:52:06,525 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 73.8) internal successors, (369), 5 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) [2021-03-26 00:52:06,537 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 94.0) internal successors, (564), 6 states have internal predecessors, (564), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 00:52:06,537 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 94.0) internal successors, (564), 6 states have internal predecessors, (564), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 00:52:06,539 INFO L185 Difference]: Start difference. First operand has 23 places, 16 transitions, 38 flow. Second operand 5 states and 369 transitions. [2021-03-26 00:52:06,539 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 27 places, 23 transitions, 76 flow [2021-03-26 00:52:06,541 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 25 places, 23 transitions, 74 flow, removed 0 selfloop flow, removed 2 redundant places. [2021-03-26 00:52:06,542 INFO L241 Difference]: Finished difference. Result has 28 places, 18 transitions, 63 flow [2021-03-26 00:52:06,543 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=36, PETRI_DIFFERENCE_MINUEND_PLACES=21, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=16, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=13, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=63, PETRI_PLACES=28, PETRI_TRANSITIONS=18} [2021-03-26 00:52:06,543 INFO L343 CegarLoopForPetriNet]: 23 programPoint places, 5 predicate places. [2021-03-26 00:52:06,543 INFO L170 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-03-26 00:52:06,543 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 28 places, 18 transitions, 63 flow [2021-03-26 00:52:06,544 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 28 places, 18 transitions, 63 flow [2021-03-26 00:52:06,544 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 26 places, 18 transitions, 63 flow [2021-03-26 00:52:06,550 INFO L129 PetriNetUnfolder]: 5/28 cut-off events. [2021-03-26 00:52:06,550 INFO L130 PetriNetUnfolder]: For 10/10 co-relation queries the response was YES. [2021-03-26 00:52:06,550 INFO L84 FinitePrefix]: Finished finitePrefix Result has 63 conditions, 28 events. 5/28 cut-off events. For 10/10 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 40 event pairs, 2 based on Foata normal form. 0/28 useless extension candidates. Maximal degree in co-relation 50. Up to 12 conditions per place. [2021-03-26 00:52:06,552 INFO L142 LiptonReduction]: Number of co-enabled transitions 56 [2021-03-26 00:52:06,901 WARN L205 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 74 [2021-03-26 00:52:07,078 WARN L205 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 74 [2021-03-26 00:52:07,134 INFO L154 LiptonReduction]: Checked pairs total: 150 [2021-03-26 00:52:07,134 INFO L156 LiptonReduction]: Total number of compositions: 3 [2021-03-26 00:52:07,134 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 591 [2021-03-26 00:52:07,135 INFO L480 AbstractCegarLoop]: Abstraction has has 23 places, 15 transitions, 57 flow [2021-03-26 00:52:07,135 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 71.75) internal successors, (287), 4 states have internal predecessors, (287), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 00:52:07,136 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-26 00:52:07,136 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-26 00:52:07,136 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-03-26 00:52:07,136 INFO L428 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-26 00:52:07,136 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-26 00:52:07,136 INFO L82 PathProgramCache]: Analyzing trace with hash -1711449321, now seen corresponding path program 1 times [2021-03-26 00:52:07,136 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-26 00:52:07,136 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1560362265] [2021-03-26 00:52:07,136 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-26 00:52:07,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-26 00:52:07,182 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 00:52:07,182 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-26 00:52:07,182 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 00:52:07,183 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-26 00:52:07,187 INFO L142 QuantifierPusher]: treesize reduction 4, result has 50.0 percent of original size [2021-03-26 00:52:07,188 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-03-26 00:52:07,190 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 00:52:07,191 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-26 00:52:07,193 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 00:52:07,193 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-26 00:52:07,194 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-26 00:52:07,194 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1560362265] [2021-03-26 00:52:07,194 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-26 00:52:07,194 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-03-26 00:52:07,194 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [478631291] [2021-03-26 00:52:07,195 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-03-26 00:52:07,195 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-26 00:52:07,195 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-03-26 00:52:07,195 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-03-26 00:52:07,196 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 72 out of 97 [2021-03-26 00:52:07,196 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 23 places, 15 transitions, 57 flow. Second operand has 5 states, 5 states have (on average 72.8) internal successors, (364), 5 states have internal predecessors, (364), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 00:52:07,196 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-26 00:52:07,196 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 72 of 97 [2021-03-26 00:52:07,197 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-26 00:52:07,217 INFO L129 PetriNetUnfolder]: 2/19 cut-off events. [2021-03-26 00:52:07,217 INFO L130 PetriNetUnfolder]: For 13/15 co-relation queries the response was YES. [2021-03-26 00:52:07,217 INFO L84 FinitePrefix]: Finished finitePrefix Result has 58 conditions, 19 events. 2/19 cut-off events. For 13/15 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 17 event pairs, 0 based on Foata normal form. 5/24 useless extension candidates. Maximal degree in co-relation 47. Up to 10 conditions per place. [2021-03-26 00:52:07,217 INFO L132 encePairwiseOnDemand]: 92/97 looper letters, 2 selfloop transitions, 5 changer transitions 3/18 dead transitions. [2021-03-26 00:52:07,217 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 28 places, 18 transitions, 93 flow [2021-03-26 00:52:07,217 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-03-26 00:52:07,218 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2021-03-26 00:52:07,218 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 444 transitions. [2021-03-26 00:52:07,219 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.7628865979381443 [2021-03-26 00:52:07,219 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 444 transitions. [2021-03-26 00:52:07,219 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 444 transitions. [2021-03-26 00:52:07,219 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-26 00:52:07,219 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 444 transitions. [2021-03-26 00:52:07,220 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 74.0) internal successors, (444), 6 states have internal predecessors, (444), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 00:52:07,222 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 97.0) internal successors, (679), 7 states have internal predecessors, (679), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 00:52:07,222 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 97.0) internal successors, (679), 7 states have internal predecessors, (679), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 00:52:07,222 INFO L185 Difference]: Start difference. First operand has 23 places, 15 transitions, 57 flow. Second operand 6 states and 444 transitions. [2021-03-26 00:52:07,222 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 28 places, 18 transitions, 93 flow [2021-03-26 00:52:07,223 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 26 places, 18 transitions, 80 flow, removed 5 selfloop flow, removed 2 redundant places. [2021-03-26 00:52:07,223 INFO L241 Difference]: Finished difference. Result has 29 places, 15 transitions, 68 flow [2021-03-26 00:52:07,223 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=97, PETRI_DIFFERENCE_MINUEND_FLOW=48, PETRI_DIFFERENCE_MINUEND_PLACES=21, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=15, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=10, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=68, PETRI_PLACES=29, PETRI_TRANSITIONS=15} [2021-03-26 00:52:07,223 INFO L343 CegarLoopForPetriNet]: 23 programPoint places, 6 predicate places. [2021-03-26 00:52:07,224 INFO L170 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-03-26 00:52:07,224 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 29 places, 15 transitions, 68 flow [2021-03-26 00:52:07,224 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 29 places, 15 transitions, 68 flow [2021-03-26 00:52:07,224 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 27 places, 15 transitions, 68 flow [2021-03-26 00:52:07,226 INFO L129 PetriNetUnfolder]: 1/15 cut-off events. [2021-03-26 00:52:07,227 INFO L130 PetriNetUnfolder]: For 10/10 co-relation queries the response was YES. [2021-03-26 00:52:07,227 INFO L84 FinitePrefix]: Finished finitePrefix Result has 43 conditions, 15 events. 1/15 cut-off events. For 10/10 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 7 event pairs, 0 based on Foata normal form. 0/15 useless extension candidates. Maximal degree in co-relation 31. Up to 6 conditions per place. [2021-03-26 00:52:07,227 INFO L142 LiptonReduction]: Number of co-enabled transitions 28 [2021-03-26 00:52:07,329 INFO L154 LiptonReduction]: Checked pairs total: 81 [2021-03-26 00:52:07,329 INFO L156 LiptonReduction]: Total number of compositions: 2 [2021-03-26 00:52:07,329 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 105 [2021-03-26 00:52:07,330 INFO L480 AbstractCegarLoop]: Abstraction has has 25 places, 13 transitions, 64 flow [2021-03-26 00:52:07,330 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 72.8) internal successors, (364), 5 states have internal predecessors, (364), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 00:52:07,330 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-26 00:52:07,330 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-26 00:52:07,330 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-03-26 00:52:07,330 INFO L428 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-26 00:52:07,331 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-26 00:52:07,331 INFO L82 PathProgramCache]: Analyzing trace with hash -1461758044, now seen corresponding path program 1 times [2021-03-26 00:52:07,331 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-26 00:52:07,331 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1660115321] [2021-03-26 00:52:07,331 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-26 00:52:07,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-26 00:52:07,361 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 00:52:07,361 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-26 00:52:07,361 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 00:52:07,362 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-26 00:52:07,364 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 00:52:07,364 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-26 00:52:07,367 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-26 00:52:07,367 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1660115321] [2021-03-26 00:52:07,367 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-26 00:52:07,367 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-26 00:52:07,367 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2061355591] [2021-03-26 00:52:07,367 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-03-26 00:52:07,367 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-26 00:52:07,368 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-03-26 00:52:07,368 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-03-26 00:52:07,369 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 79 out of 99 [2021-03-26 00:52:07,369 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 25 places, 13 transitions, 64 flow. Second operand has 4 states, 4 states have (on average 80.0) internal successors, (320), 4 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) [2021-03-26 00:52:07,369 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-26 00:52:07,369 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 79 of 99 [2021-03-26 00:52:07,369 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-26 00:52:07,383 INFO L129 PetriNetUnfolder]: 2/20 cut-off events. [2021-03-26 00:52:07,383 INFO L130 PetriNetUnfolder]: For 41/42 co-relation queries the response was YES. [2021-03-26 00:52:07,383 INFO L84 FinitePrefix]: Finished finitePrefix Result has 65 conditions, 20 events. 2/20 cut-off events. For 41/42 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 27 event pairs, 0 based on Foata normal form. 2/22 useless extension candidates. Maximal degree in co-relation 50. Up to 10 conditions per place. [2021-03-26 00:52:07,384 INFO L132 encePairwiseOnDemand]: 96/99 looper letters, 3 selfloop transitions, 1 changer transitions 1/14 dead transitions. [2021-03-26 00:52:07,384 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 28 places, 14 transitions, 76 flow [2021-03-26 00:52:07,385 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-03-26 00:52:07,385 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2021-03-26 00:52:07,385 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 322 transitions. [2021-03-26 00:52:07,386 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8131313131313131 [2021-03-26 00:52:07,386 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 322 transitions. [2021-03-26 00:52:07,386 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 322 transitions. [2021-03-26 00:52:07,386 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-26 00:52:07,386 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 322 transitions. [2021-03-26 00:52:07,387 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 80.5) internal successors, (322), 4 states have internal predecessors, (322), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 00:52:07,387 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 99.0) internal successors, (495), 5 states have internal predecessors, (495), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 00:52:07,388 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 99.0) internal successors, (495), 5 states have internal predecessors, (495), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 00:52:07,388 INFO L185 Difference]: Start difference. First operand has 25 places, 13 transitions, 64 flow. Second operand 4 states and 322 transitions. [2021-03-26 00:52:07,388 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 28 places, 14 transitions, 76 flow [2021-03-26 00:52:07,388 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 23 places, 14 transitions, 60 flow, removed 5 selfloop flow, removed 5 redundant places. [2021-03-26 00:52:07,389 INFO L241 Difference]: Finished difference. Result has 25 places, 13 transitions, 55 flow [2021-03-26 00:52:07,389 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=99, PETRI_DIFFERENCE_MINUEND_FLOW=48, PETRI_DIFFERENCE_MINUEND_PLACES=20, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=13, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=12, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=55, PETRI_PLACES=25, PETRI_TRANSITIONS=13} [2021-03-26 00:52:07,389 INFO L343 CegarLoopForPetriNet]: 23 programPoint places, 2 predicate places. [2021-03-26 00:52:07,389 INFO L170 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-03-26 00:52:07,389 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 25 places, 13 transitions, 55 flow [2021-03-26 00:52:07,389 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 25 places, 13 transitions, 55 flow [2021-03-26 00:52:07,390 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 24 places, 13 transitions, 55 flow [2021-03-26 00:52:07,392 INFO L129 PetriNetUnfolder]: 1/16 cut-off events. [2021-03-26 00:52:07,392 INFO L130 PetriNetUnfolder]: For 8/8 co-relation queries the response was YES. [2021-03-26 00:52:07,392 INFO L84 FinitePrefix]: Finished finitePrefix Result has 41 conditions, 16 events. 1/16 cut-off events. For 8/8 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 8 event pairs, 0 based on Foata normal form. 0/16 useless extension candidates. Maximal degree in co-relation 31. Up to 5 conditions per place. [2021-03-26 00:52:07,392 INFO L142 LiptonReduction]: Number of co-enabled transitions 22 [2021-03-26 00:52:07,482 INFO L154 LiptonReduction]: Checked pairs total: 18 [2021-03-26 00:52:07,482 INFO L156 LiptonReduction]: Total number of compositions: 3 [2021-03-26 00:52:07,483 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 94 [2021-03-26 00:52:07,483 INFO L480 AbstractCegarLoop]: Abstraction has has 23 places, 12 transitions, 58 flow [2021-03-26 00:52:07,484 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 80.0) internal successors, (320), 4 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) [2021-03-26 00:52:07,484 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-26 00:52:07,484 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-26 00:52:07,484 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-03-26 00:52:07,484 INFO L428 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-26 00:52:07,484 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-26 00:52:07,484 INFO L82 PathProgramCache]: Analyzing trace with hash 666477771, now seen corresponding path program 1 times [2021-03-26 00:52:07,484 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-26 00:52:07,485 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1512876787] [2021-03-26 00:52:07,485 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-26 00:52:07,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-26 00:52:07,512 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 00:52:07,512 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-26 00:52:07,513 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 00:52:07,513 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-26 00:52:07,516 INFO L142 QuantifierPusher]: treesize reduction 3, result has 75.0 percent of original size [2021-03-26 00:52:07,517 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-26 00:52:07,521 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-26 00:52:07,521 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1512876787] [2021-03-26 00:52:07,522 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-26 00:52:07,522 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-26 00:52:07,522 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1181706372] [2021-03-26 00:52:07,522 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-03-26 00:52:07,522 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-26 00:52:07,522 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-03-26 00:52:07,523 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-03-26 00:52:07,524 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 76 out of 102 [2021-03-26 00:52:07,524 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 23 places, 12 transitions, 58 flow. Second operand has 4 states, 4 states have (on average 77.25) internal successors, (309), 4 states have internal predecessors, (309), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 00:52:07,524 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-26 00:52:07,524 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 76 of 102 [2021-03-26 00:52:07,525 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-26 00:52:07,550 INFO L129 PetriNetUnfolder]: 1/18 cut-off events. [2021-03-26 00:52:07,551 INFO L130 PetriNetUnfolder]: For 44/47 co-relation queries the response was YES. [2021-03-26 00:52:07,551 INFO L84 FinitePrefix]: Finished finitePrefix Result has 62 conditions, 18 events. 1/18 cut-off events. For 44/47 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 30 event pairs, 0 based on Foata normal form. 2/18 useless extension candidates. Maximal degree in co-relation 55. Up to 7 conditions per place. [2021-03-26 00:52:07,551 INFO L132 encePairwiseOnDemand]: 98/102 looper letters, 0 selfloop transitions, 0 changer transitions 13/13 dead transitions. [2021-03-26 00:52:07,551 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 25 places, 13 transitions, 80 flow [2021-03-26 00:52:07,552 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-03-26 00:52:07,552 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2021-03-26 00:52:07,553 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 313 transitions. [2021-03-26 00:52:07,553 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.7671568627450981 [2021-03-26 00:52:07,553 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 313 transitions. [2021-03-26 00:52:07,553 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 313 transitions. [2021-03-26 00:52:07,553 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-26 00:52:07,553 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 313 transitions. [2021-03-26 00:52:07,554 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 78.25) internal successors, (313), 4 states have internal predecessors, (313), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 00:52:07,555 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 102.0) internal successors, (510), 5 states have internal predecessors, (510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 00:52:07,555 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 102.0) internal successors, (510), 5 states have internal predecessors, (510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 00:52:07,555 INFO L185 Difference]: Start difference. First operand has 23 places, 12 transitions, 58 flow. Second operand 4 states and 313 transitions. [2021-03-26 00:52:07,555 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 25 places, 13 transitions, 80 flow [2021-03-26 00:52:07,556 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 22 places, 13 transitions, 67 flow, removed 0 selfloop flow, removed 3 redundant places. [2021-03-26 00:52:07,556 INFO L241 Difference]: Finished difference. Result has 22 places, 0 transitions, 0 flow [2021-03-26 00:52:07,556 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=102, PETRI_DIFFERENCE_MINUEND_FLOW=41, PETRI_DIFFERENCE_MINUEND_PLACES=19, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=11, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=11, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=0, PETRI_PLACES=22, PETRI_TRANSITIONS=0} [2021-03-26 00:52:07,556 INFO L343 CegarLoopForPetriNet]: 23 programPoint places, -1 predicate places. [2021-03-26 00:52:07,556 INFO L170 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-03-26 00:52:07,556 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 22 places, 0 transitions, 0 flow [2021-03-26 00:52:07,557 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 22 places, 0 transitions, 0 flow [2021-03-26 00:52:07,557 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 0 places, 0 transitions, 0 flow [2021-03-26 00:52:07,557 INFO L129 PetriNetUnfolder]: 0/0 cut-off events. [2021-03-26 00:52:07,557 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-26 00:52:07,557 INFO L84 FinitePrefix]: Finished finitePrefix Result has 0 conditions, 0 events. 0/0 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 0. Compared 0 event pairs, 0 based on Foata normal form. 0/0 useless extension candidates. Maximal degree in co-relation 0. Up to 0 conditions per place. [2021-03-26 00:52:07,557 INFO L142 LiptonReduction]: Number of co-enabled transitions 0 [2021-03-26 00:52:07,557 INFO L154 LiptonReduction]: Checked pairs total: 0 [2021-03-26 00:52:07,557 INFO L156 LiptonReduction]: Total number of compositions: 0 [2021-03-26 00:52:07,557 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 1 [2021-03-26 00:52:07,558 INFO L480 AbstractCegarLoop]: Abstraction has has 0 places, 0 transitions, 0 flow [2021-03-26 00:52:07,558 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 77.25) internal successors, (309), 4 states have internal predecessors, (309), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 00:52:07,558 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-03-26 00:52:07,561 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 26.03 12:52:07 BasicIcfg [2021-03-26 00:52:07,561 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-03-26 00:52:07,564 INFO L168 Benchmark]: Toolchain (without parser) took 2835.53 ms. Allocated memory was 255.9 MB in the beginning and 427.8 MB in the end (delta: 172.0 MB). Free memory was 235.5 MB in the beginning and 375.7 MB in the end (delta: -140.3 MB). Peak memory consumption was 31.7 MB. Max. memory is 16.0 GB. [2021-03-26 00:52:07,564 INFO L168 Benchmark]: CDTParser took 1.16 ms. Allocated memory is still 255.9 MB. Free memory was 238.2 MB in the beginning and 238.2 MB in the end (delta: 26.6 kB). There was no memory consumed. Max. memory is 16.0 GB. [2021-03-26 00:52:07,565 INFO L168 Benchmark]: CACSL2BoogieTranslator took 331.05 ms. Allocated memory was 255.9 MB in the beginning and 356.5 MB in the end (delta: 100.7 MB). Free memory was 234.8 MB in the beginning and 320.6 MB in the end (delta: -85.8 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.0 GB. [2021-03-26 00:52:07,565 INFO L168 Benchmark]: Boogie Procedure Inliner took 48.04 ms. Allocated memory is still 356.5 MB. Free memory was 320.6 MB in the beginning and 318.5 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-03-26 00:52:07,565 INFO L168 Benchmark]: Boogie Preprocessor took 29.89 ms. Allocated memory is still 356.5 MB. Free memory was 318.5 MB in the beginning and 317.0 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-03-26 00:52:07,567 INFO L168 Benchmark]: RCFGBuilder took 282.74 ms. Allocated memory is still 356.5 MB. Free memory was 317.0 MB in the beginning and 297.5 MB in the end (delta: 19.5 MB). Peak memory consumption was 18.9 MB. Max. memory is 16.0 GB. [2021-03-26 00:52:07,570 INFO L168 Benchmark]: TraceAbstraction took 2140.28 ms. Allocated memory was 356.5 MB in the beginning and 427.8 MB in the end (delta: 71.3 MB). Free memory was 296.8 MB in the beginning and 375.7 MB in the end (delta: -79.0 MB). There was no memory consumed. Max. memory is 16.0 GB. [2021-03-26 00:52:07,571 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 1.16 ms. Allocated memory is still 255.9 MB. Free memory was 238.2 MB in the beginning and 238.2 MB in the end (delta: 26.6 kB). There was no memory consumed. Max. memory is 16.0 GB. * CACSL2BoogieTranslator took 331.05 ms. Allocated memory was 255.9 MB in the beginning and 356.5 MB in the end (delta: 100.7 MB). Free memory was 234.8 MB in the beginning and 320.6 MB in the end (delta: -85.8 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.0 GB. * Boogie Procedure Inliner took 48.04 ms. Allocated memory is still 356.5 MB. Free memory was 320.6 MB in the beginning and 318.5 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * Boogie Preprocessor took 29.89 ms. Allocated memory is still 356.5 MB. Free memory was 318.5 MB in the beginning and 317.0 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * RCFGBuilder took 282.74 ms. Allocated memory is still 356.5 MB. Free memory was 317.0 MB in the beginning and 297.5 MB in the end (delta: 19.5 MB). Peak memory consumption was 18.9 MB. Max. memory is 16.0 GB. * TraceAbstraction took 2140.28 ms. Allocated memory was 356.5 MB in the beginning and 427.8 MB in the end (delta: 71.3 MB). Free memory was 296.8 MB in the beginning and 375.7 MB in the end (delta: -79.0 MB). There was no memory consumed. Max. memory is 16.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 775.9ms, 55 PlacesBefore, 23 PlacesAfterwards, 49 TransitionsBefore, 16 TransitionsAfterwards, 456 CoEnabledTransitionPairs, 4 FixpointIterations, 14 TrivialSequentialCompositions, 18 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 1 ChoiceCompositions, 33 TotalNumberOfCompositions, 568 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 381, positive: 354, positive conditional: 354, positive unconditional: 0, negative: 27, negative conditional: 27, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 322, positive: 304, positive conditional: 0, positive unconditional: 304, negative: 18, negative conditional: 0, negative unconditional: 18, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 322, positive: 304, positive conditional: 0, positive unconditional: 304, negative: 18, negative conditional: 0, negative unconditional: 18, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 322, positive: 301, positive conditional: 0, positive unconditional: 301, negative: 21, negative conditional: 0, negative unconditional: 21, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 21, positive: 3, positive conditional: 0, positive unconditional: 3, negative: 18, negative conditional: 0, negative unconditional: 18, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 82, positive: 16, positive conditional: 0, positive unconditional: 16, negative: 66, negative conditional: 0, negative unconditional: 66, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 381, positive: 50, positive conditional: 50, positive unconditional: 0, negative: 9, negative conditional: 9, negative unconditional: 0, unknown: 322, unknown conditional: 322, unknown unconditional: 0] , Statistics on independence cache: Total cache size (in pairs): 15, Positive cache size: 11, Positive conditional cache size: 11, Positive unconditional cache size: 0, Negative cache size: 4, Negative conditional cache size: 4, Negative unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 590.4ms, 28 PlacesBefore, 23 PlacesAfterwards, 18 TransitionsBefore, 15 TransitionsAfterwards, 56 CoEnabledTransitionPairs, 3 FixpointIterations, 3 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 3 TotalNumberOfCompositions, 150 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 51, positive: 30, positive conditional: 30, positive unconditional: 0, negative: 21, negative conditional: 21, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 7, positive: 5, positive conditional: 2, positive unconditional: 3, negative: 2, negative conditional: 0, negative unconditional: 2, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 7, positive: 5, positive conditional: 2, positive unconditional: 3, negative: 2, negative conditional: 0, negative unconditional: 2, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 7, positive: 5, positive conditional: 0, positive unconditional: 5, negative: 2, negative conditional: 0, negative unconditional: 2, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 2, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 2, negative conditional: 0, negative unconditional: 2, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 5, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 5, negative conditional: 0, negative unconditional: 5, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 51, positive: 25, positive conditional: 25, positive unconditional: 0, negative: 19, negative conditional: 19, negative unconditional: 0, unknown: 7, unknown conditional: 7, unknown unconditional: 0] , Statistics on independence cache: Total cache size (in pairs): 22, Positive cache size: 16, Positive conditional cache size: 16, Positive unconditional cache size: 0, Negative cache size: 6, Negative conditional cache size: 6, Negative unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 104.9ms, 29 PlacesBefore, 25 PlacesAfterwards, 15 TransitionsBefore, 13 TransitionsAfterwards, 28 CoEnabledTransitionPairs, 3 FixpointIterations, 2 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 2 TotalNumberOfCompositions, 81 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 51, positive: 30, positive conditional: 30, positive unconditional: 0, negative: 21, negative conditional: 21, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 8, positive: 6, positive conditional: 4, positive unconditional: 2, negative: 2, negative conditional: 0, negative unconditional: 2, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 8, positive: 6, positive conditional: 4, positive unconditional: 2, negative: 2, negative conditional: 0, negative unconditional: 2, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 8, positive: 6, positive conditional: 0, positive unconditional: 6, negative: 2, negative conditional: 0, negative unconditional: 2, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 2, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 2, negative conditional: 0, negative unconditional: 2, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ 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] ], Cache Queries: [ total: 51, positive: 24, positive conditional: 24, positive unconditional: 0, negative: 19, negative conditional: 19, negative unconditional: 0, unknown: 8, unknown conditional: 8, unknown unconditional: 0] , Statistics on independence cache: Total cache size (in pairs): 17, Positive cache size: 13, Positive conditional cache size: 13, Positive unconditional cache size: 0, Negative cache size: 4, Negative conditional cache size: 4, Negative unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 93.1ms, 25 PlacesBefore, 23 PlacesAfterwards, 13 TransitionsBefore, 12 TransitionsAfterwards, 22 CoEnabledTransitionPairs, 3 FixpointIterations, 1 TrivialSequentialCompositions, 2 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 3 TotalNumberOfCompositions, 18 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 17, positive: 12, positive conditional: 12, positive unconditional: 0, negative: 5, negative conditional: 5, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 11, positive: 9, positive conditional: 5, positive unconditional: 4, negative: 2, negative conditional: 0, negative unconditional: 2, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 11, positive: 9, positive conditional: 5, positive unconditional: 4, negative: 2, negative conditional: 0, negative unconditional: 2, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 11, positive: 9, positive conditional: 0, positive unconditional: 9, negative: 2, negative conditional: 0, negative unconditional: 2, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 2, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 2, negative conditional: 0, negative unconditional: 2, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 6, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 6, negative conditional: 0, negative unconditional: 6, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 17, positive: 3, positive conditional: 3, positive unconditional: 0, negative: 3, negative conditional: 3, negative unconditional: 0, unknown: 11, unknown conditional: 11, unknown unconditional: 0] , Statistics on independence cache: Total cache size (in pairs): 3, Positive cache size: 1, Positive conditional cache size: 1, Positive unconditional cache size: 0, Negative cache size: 2, Negative conditional cache size: 2, Negative unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 0.6ms, 22 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): 3, Positive cache size: 1, Positive conditional cache size: 1, Positive unconditional cache size: 0, Negative cache size: 2, Negative conditional cache size: 2, Negative unconditional cache size: 0 - PositiveResult [Line: 18]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 60 locations, 1 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 2.6ms, RemoveRedundantFlowTime: 0.0ms, RemoveRedundantFlowUnfoldingTime: 0.0ms, BackfoldingTime: 0.0ms, BackfoldingUnfoldingTime: 0.0ms, FlowIncreaseByBackfolding: 0, BasicCegarLoop: VerificationResult: SAFE, OverallTime: 2080.0ms, OverallIterations: 4, TraceHistogramMax: 1, EmptinessCheckTime: 0.0ms, AutomataDifference: 165.7ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 826.2ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 15 SDtfs, 9 SDslu, 8 SDs, 0 SdLazy, 50 SolverSat, 9 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 34.7ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 19 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 37.4ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=68occurred in iteration=2, InterpolantAutomatonStates: 19, 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: 6.9ms SsaConstructionTime, 52.9ms SatisfiabilityAnalysisTime, 147.6ms InterpolantComputationTime, 47 NumberOfCodeBlocks, 47 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 43 ConstructedInterpolants, 0 QuantifiedInterpolants, 126 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 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! Received shutdown request...