/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-RepeatedSemanticLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/pthread-wmm/safe036_rmo.oepc.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-0e22065b97d0a1f8b3904e080cebe0f05e88d2b7-0e22065 [2021-06-11 07:02:17,271 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-06-11 07:02:17,273 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-06-11 07:02:17,298 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-06-11 07:02:17,299 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-06-11 07:02:17,300 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-06-11 07:02:17,301 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-06-11 07:02:17,303 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-06-11 07:02:17,304 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-06-11 07:02:17,305 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-06-11 07:02:17,305 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-06-11 07:02:17,306 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-06-11 07:02:17,307 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-06-11 07:02:17,307 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-06-11 07:02:17,308 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-06-11 07:02:17,309 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-06-11 07:02:17,310 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-06-11 07:02:17,311 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-06-11 07:02:17,312 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-06-11 07:02:17,313 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-06-11 07:02:17,314 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-06-11 07:02:17,315 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-06-11 07:02:17,316 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-06-11 07:02:17,317 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-06-11 07:02:17,319 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-06-11 07:02:17,320 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-06-11 07:02:17,320 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-06-11 07:02:17,321 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-06-11 07:02:17,321 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-06-11 07:02:17,322 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-06-11 07:02:17,322 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-06-11 07:02:17,323 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-06-11 07:02:17,324 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-06-11 07:02:17,324 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-06-11 07:02:17,325 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-06-11 07:02:17,325 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-06-11 07:02:17,326 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-06-11 07:02:17,326 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-06-11 07:02:17,326 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-06-11 07:02:17,327 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-06-11 07:02:17,328 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-06-11 07:02:17,328 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-RepeatedSemanticLbe.epf [2021-06-11 07:02:17,347 INFO L113 SettingsManager]: Loading preferences was successful [2021-06-11 07:02:17,347 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-06-11 07:02:17,348 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-06-11 07:02:17,348 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-06-11 07:02:17,348 INFO L138 SettingsManager]: * Use SBE=true [2021-06-11 07:02:17,349 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-06-11 07:02:17,349 INFO L138 SettingsManager]: * sizeof long=4 [2021-06-11 07:02:17,349 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-06-11 07:02:17,349 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-06-11 07:02:17,349 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-06-11 07:02:17,349 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-06-11 07:02:17,349 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-06-11 07:02:17,349 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-06-11 07:02:17,350 INFO L138 SettingsManager]: * sizeof long double=12 [2021-06-11 07:02:17,350 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-06-11 07:02:17,350 INFO L138 SettingsManager]: * Use constant arrays=true [2021-06-11 07:02:17,350 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-06-11 07:02:17,350 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-06-11 07:02:17,350 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-06-11 07:02:17,350 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-06-11 07:02:17,351 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-06-11 07:02:17,351 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-06-11 07:02:17,351 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-06-11 07:02:17,351 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-06-11 07:02:17,351 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-06-11 07:02:17,351 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-06-11 07:02:17,351 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-06-11 07:02:17,351 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-06-11 07:02:17,352 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-06-11 07:02:17,352 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-06-11 07:02:17,646 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-06-11 07:02:17,664 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-06-11 07:02:17,667 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-06-11 07:02:17,668 INFO L271 PluginConnector]: Initializing CDTParser... [2021-06-11 07:02:17,669 INFO L275 PluginConnector]: CDTParser initialized [2021-06-11 07:02:17,669 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe036_rmo.oepc.i [2021-06-11 07:02:17,742 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f435a4f6f/8383295864fa438a9c226d6548fe489e/FLAGd3f4bed27 [2021-06-11 07:02:18,320 INFO L306 CDTParser]: Found 1 translation units. [2021-06-11 07:02:18,320 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe036_rmo.oepc.i [2021-06-11 07:02:18,331 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f435a4f6f/8383295864fa438a9c226d6548fe489e/FLAGd3f4bed27 [2021-06-11 07:02:18,601 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f435a4f6f/8383295864fa438a9c226d6548fe489e [2021-06-11 07:02:18,603 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-06-11 07:02:18,604 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-06-11 07:02:18,606 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-06-11 07:02:18,606 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-06-11 07:02:18,609 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-06-11 07:02:18,609 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.06 07:02:18" (1/1) ... [2021-06-11 07:02:18,610 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4a2b5bb9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.06 07:02:18, skipping insertion in model container [2021-06-11 07:02:18,610 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.06 07:02:18" (1/1) ... [2021-06-11 07:02:18,616 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-06-11 07:02:18,656 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-06-11 07:02:18,804 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_rmo.oepc.i[950,963] [2021-06-11 07:02:18,982 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-06-11 07:02:18,991 INFO L203 MainTranslator]: Completed pre-run [2021-06-11 07:02:19,002 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_rmo.oepc.i[950,963] [2021-06-11 07:02:19,019 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-06-11 07:02:19,074 INFO L208 MainTranslator]: Completed translation [2021-06-11 07:02:19,074 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.06 07:02:19 WrapperNode [2021-06-11 07:02:19,074 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-06-11 07:02:19,075 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-06-11 07:02:19,075 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-06-11 07:02:19,075 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-06-11 07:02:19,081 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.06 07:02:19" (1/1) ... [2021-06-11 07:02:19,111 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.06 07:02:19" (1/1) ... [2021-06-11 07:02:19,131 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-06-11 07:02:19,132 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-06-11 07:02:19,132 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-06-11 07:02:19,132 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-06-11 07:02:19,139 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.06 07:02:19" (1/1) ... [2021-06-11 07:02:19,139 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.06 07:02:19" (1/1) ... [2021-06-11 07:02:19,144 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.06 07:02:19" (1/1) ... [2021-06-11 07:02:19,145 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.06 07:02:19" (1/1) ... [2021-06-11 07:02:19,161 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.06 07:02:19" (1/1) ... [2021-06-11 07:02:19,162 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.06 07:02:19" (1/1) ... [2021-06-11 07:02:19,164 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.06 07:02:19" (1/1) ... [2021-06-11 07:02:19,166 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-06-11 07:02:19,167 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-06-11 07:02:19,167 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-06-11 07:02:19,167 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-06-11 07:02:19,168 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.06 07:02:19" (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 [2021-06-11 07:02:19,249 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-06-11 07:02:19,250 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-06-11 07:02:19,250 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-06-11 07:02:19,250 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-06-11 07:02:19,250 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2021-06-11 07:02:19,251 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2021-06-11 07:02:19,251 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2021-06-11 07:02:19,252 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2021-06-11 07:02:19,252 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-06-11 07:02:19,252 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-06-11 07:02:19,252 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-06-11 07:02:19,253 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-06-11 07:02:19,254 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-06-11 07:02:19,641 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-06-11 07:02:19,641 INFO L299 CfgBuilder]: Removed 8 assume(true) statements. [2021-06-11 07:02:19,644 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.06 07:02:19 BoogieIcfgContainer [2021-06-11 07:02:19,644 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-06-11 07:02:19,646 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-06-11 07:02:19,647 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-06-11 07:02:19,649 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-06-11 07:02:19,649 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.06 07:02:18" (1/3) ... [2021-06-11 07:02:19,650 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1a205455 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.06 07:02:19, skipping insertion in model container [2021-06-11 07:02:19,650 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.06 07:02:19" (2/3) ... [2021-06-11 07:02:19,651 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1a205455 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.06 07:02:19, skipping insertion in model container [2021-06-11 07:02:19,651 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.06 07:02:19" (3/3) ... [2021-06-11 07:02:19,652 INFO L111 eAbstractionObserver]: Analyzing ICFG safe036_rmo.oepc.i [2021-06-11 07:02:19,657 INFO L149 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-06-11 07:02:19,661 INFO L161 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-06-11 07:02:19,662 INFO L323 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-06-11 07:02:19,693 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-11 07:02:19,694 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-11 07:02:19,694 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-11 07:02:19,694 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-11 07:02:19,694 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-11 07:02:19,695 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-11 07:02:19,695 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-11 07:02:19,695 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-11 07:02:19,695 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-11 07:02:19,695 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-11 07:02:19,696 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-11 07:02:19,696 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-11 07:02:19,697 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-11 07:02:19,697 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-11 07:02:19,697 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-11 07:02:19,697 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-11 07:02:19,697 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-11 07:02:19,697 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-11 07:02:19,698 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-11 07:02:19,698 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-11 07:02:19,699 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-11 07:02:19,699 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-11 07:02:19,699 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-11 07:02:19,699 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-11 07:02:19,701 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-11 07:02:19,701 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-11 07:02:19,702 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-11 07:02:19,703 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-11 07:02:19,708 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-11 07:02:19,708 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-11 07:02:19,708 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-11 07:02:19,708 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-11 07:02:19,711 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-06-11 07:02:19,728 INFO L253 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2021-06-11 07:02:19,757 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-06-11 07:02:19,757 INFO L377 AbstractCegarLoop]: Hoare is false [2021-06-11 07:02:19,758 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-06-11 07:02:19,758 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-06-11 07:02:19,758 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-06-11 07:02:19,758 INFO L381 AbstractCegarLoop]: Difference is false [2021-06-11 07:02:19,758 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-06-11 07:02:19,758 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-06-11 07:02:19,770 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 66 places, 61 transitions, 132 flow [2021-06-11 07:02:19,817 INFO L129 PetriNetUnfolder]: 2/59 cut-off events. [2021-06-11 07:02:19,818 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-06-11 07:02:19,822 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. [2021-06-11 07:02:19,823 INFO L82 GeneralOperation]: Start removeDead. Operand has 66 places, 61 transitions, 132 flow [2021-06-11 07:02:19,834 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 55 places, 49 transitions, 104 flow [2021-06-11 07:02:19,836 INFO L168 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-06-11 07:02:19,850 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 55 places, 49 transitions, 104 flow [2021-06-11 07:02:19,853 INFO L138 LiptonReduction]: Starting Lipton reduction on Petri net that has 55 places, 49 transitions, 104 flow [2021-06-11 07:02:19,855 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 55 places, 49 transitions, 104 flow [2021-06-11 07:02:19,881 INFO L129 PetriNetUnfolder]: 1/49 cut-off events. [2021-06-11 07:02:19,881 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-06-11 07:02:19,882 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. [2021-06-11 07:02:19,884 INFO L151 LiptonReduction]: Number of co-enabled transitions 456 [2021-06-11 07:02:19,988 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 07:02:19,999 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-11 07:02:20,028 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 07:02:20,035 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-11 07:02:20,091 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 07:02:20,092 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-11 07:02:20,114 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 07:02:20,115 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-11 07:02:20,249 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 07:02:20,266 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-06-11 07:02:20,267 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 07:02:20,268 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-11 07:02:20,270 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-06-11 07:02:20,335 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 07:02:20,337 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-11 07:02:20,347 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 07:02:20,349 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-11 07:02:20,385 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 07:02:20,386 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-11 07:02:20,404 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 07:02:20,405 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-11 07:02:20,450 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 07:02:20,452 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-11 07:02:20,523 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 07:02:20,528 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-06-11 07:02:20,529 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 07:02:20,529 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-11 07:02:20,530 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-06-11 07:02:20,633 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 07:02:20,638 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-06-11 07:02:20,639 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 07:02:20,640 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-11 07:02:20,640 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-06-11 07:02:20,674 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 07:02:20,675 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-11 07:02:20,751 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 07:02:20,770 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-06-11 07:02:20,771 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 07:02:20,772 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-11 07:02:20,774 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-06-11 07:02:20,886 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 07:02:20,888 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-11 07:02:20,975 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 07:02:20,976 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-11 07:02:21,002 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 07:02:21,004 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-11 07:02:21,067 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 07:02:21,069 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-11 07:02:21,097 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 07:02:21,099 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-11 07:02:21,204 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 07:02:21,211 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-06-11 07:02:21,212 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 07:02:21,213 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-06-11 07:02:21,215 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-06-11 07:02:21,247 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 07:02:21,250 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-11 07:02:21,287 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 07:02:21,293 INFO L147 QuantifierPusher]: treesize reduction 15, result has 6.3 percent of original size 1 [2021-06-11 07:02:21,358 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 07:02:21,362 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-11 07:02:21,397 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 07:02:21,398 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-11 07:02:21,648 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 07:02:21,652 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-06-11 07:02:21,652 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 07:02:21,653 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-11 07:02:21,654 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-06-11 07:02:21,664 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 07:02:21,668 INFO L147 QuantifierPusher]: treesize reduction 17, result has 19.0 percent of original size 4 [2021-06-11 07:02:21,788 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 07:02:21,791 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-06-11 07:02:21,792 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 07:02:21,792 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-11 07:02:21,793 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-06-11 07:02:21,963 WARN L205 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 74 [2021-06-11 07:02:22,161 WARN L205 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 74 [2021-06-11 07:02:22,232 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 07:02:22,244 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-06-11 07:02:22,245 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 07:02:22,249 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-11 07:02:22,254 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-06-11 07:02:22,268 INFO L163 LiptonReduction]: Checked pairs total: 844 [2021-06-11 07:02:22,268 INFO L165 LiptonReduction]: Total number of compositions: 40 [2021-06-11 07:02:22,271 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 2436 [2021-06-11 07:02:22,280 INFO L129 PetriNetUnfolder]: 0/6 cut-off events. [2021-06-11 07:02:22,281 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-06-11 07:02:22,281 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-11 07:02:22,281 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2021-06-11 07:02:22,282 INFO L428 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-11 07:02:22,286 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-11 07:02:22,286 INFO L82 PathProgramCache]: Analyzing trace with hash 203971101, now seen corresponding path program 1 times [2021-06-11 07:02:22,293 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-11 07:02:22,293 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1697171384] [2021-06-11 07:02:22,293 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-11 07:02:22,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-11 07:02:22,441 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 07:02:22,442 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-11 07:02:22,443 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-11 07:02:22,443 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1697171384] [2021-06-11 07:02:22,443 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-11 07:02:22,443 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-06-11 07:02:22,444 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1670074081] [2021-06-11 07:02:22,450 INFO L460 AbstractCegarLoop]: Interpolant automaton has 2 states [2021-06-11 07:02:22,451 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-11 07:02:22,461 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-06-11 07:02:22,462 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-06-11 07:02:22,463 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 94 out of 101 [2021-06-11 07:02:22,465 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 19 places, 13 transitions, 32 flow. Second operand has 2 states, 2 states have (on average 94.5) internal successors, (189), 2 states have internal predecessors, (189), 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) [2021-06-11 07:02:22,465 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-11 07:02:22,465 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 94 of 101 [2021-06-11 07:02:22,466 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-11 07:02:22,471 INFO L129 PetriNetUnfolder]: 0/12 cut-off events. [2021-06-11 07:02:22,471 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-06-11 07:02:22,472 INFO L84 FinitePrefix]: Finished finitePrefix Result has 20 conditions, 12 events. 0/12 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 13 event pairs, 0 based on Foata normal form. 1/13 useless extension candidates. Maximal degree in co-relation 0. Up to 1 conditions per place. [2021-06-11 07:02:22,472 INFO L132 encePairwiseOnDemand]: 100/101 looper letters, 0 selfloop transitions, 0 changer transitions 0/12 dead transitions. [2021-06-11 07:02:22,472 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 20 places, 12 transitions, 30 flow [2021-06-11 07:02:22,473 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-06-11 07:02:22,475 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2021-06-11 07:02:22,481 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 189 transitions. [2021-06-11 07:02:22,483 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9356435643564357 [2021-06-11 07:02:22,484 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 189 transitions. [2021-06-11 07:02:22,484 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 189 transitions. [2021-06-11 07:02:22,485 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-11 07:02:22,487 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 189 transitions. [2021-06-11 07:02:22,490 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 94.5) internal successors, (189), 2 states have internal predecessors, (189), 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) [2021-06-11 07:02:22,493 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 101.0) internal successors, (303), 3 states have internal predecessors, (303), 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) [2021-06-11 07:02:22,494 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 101.0) internal successors, (303), 3 states have internal predecessors, (303), 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) [2021-06-11 07:02:22,495 INFO L185 Difference]: Start difference. First operand has 19 places, 13 transitions, 32 flow. Second operand 2 states and 189 transitions. [2021-06-11 07:02:22,496 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 20 places, 12 transitions, 30 flow [2021-06-11 07:02:22,498 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 18 places, 12 transitions, 28 flow, removed 0 selfloop flow, removed 2 redundant places. [2021-06-11 07:02:22,499 INFO L241 Difference]: Finished difference. Result has 18 places, 12 transitions, 28 flow [2021-06-11 07:02:22,501 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=101, PETRI_DIFFERENCE_MINUEND_FLOW=28, PETRI_DIFFERENCE_MINUEND_PLACES=17, 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=2, PETRI_FLOW=28, PETRI_PLACES=18, PETRI_TRANSITIONS=12} [2021-06-11 07:02:22,502 INFO L343 CegarLoopForPetriNet]: 19 programPoint places, -1 predicate places. [2021-06-11 07:02:22,502 INFO L168 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-06-11 07:02:22,502 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 18 places, 12 transitions, 28 flow [2021-06-11 07:02:22,502 INFO L138 LiptonReduction]: Starting Lipton reduction on Petri net that has 18 places, 12 transitions, 28 flow [2021-06-11 07:02:22,503 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 17 places, 12 transitions, 28 flow [2021-06-11 07:02:22,505 INFO L129 PetriNetUnfolder]: 0/12 cut-off events. [2021-06-11 07:02:22,505 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-06-11 07:02:22,505 INFO L84 FinitePrefix]: Finished finitePrefix Result has 17 conditions, 12 events. 0/12 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 12 event pairs, 0 based on Foata normal form. 0/12 useless extension candidates. Maximal degree in co-relation 0. Up to 1 conditions per place. [2021-06-11 07:02:22,506 INFO L151 LiptonReduction]: Number of co-enabled transitions 54 [2021-06-11 07:02:22,507 INFO L163 LiptonReduction]: Checked pairs total: 60 [2021-06-11 07:02:22,507 INFO L165 LiptonReduction]: Total number of compositions: 0 [2021-06-11 07:02:22,507 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 5 [2021-06-11 07:02:22,508 INFO L480 AbstractCegarLoop]: Abstraction has has 17 places, 12 transitions, 28 flow [2021-06-11 07:02:22,508 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 2 states, 2 states have (on average 94.5) internal successors, (189), 2 states have internal predecessors, (189), 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) [2021-06-11 07:02:22,508 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-11 07:02:22,508 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2021-06-11 07:02:22,508 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-06-11 07:02:22,509 INFO L428 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-11 07:02:22,509 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-11 07:02:22,509 INFO L82 PathProgramCache]: Analyzing trace with hash 2028136705, now seen corresponding path program 1 times [2021-06-11 07:02:22,509 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-11 07:02:22,509 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2040572422] [2021-06-11 07:02:22,510 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-11 07:02:22,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-11 07:02:22,635 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 07:02:22,635 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-11 07:02:22,662 INFO L142 QuantifierPusher]: treesize reduction 11, result has 54.2 percent of original size [2021-06-11 07:02:22,663 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-11 07:02:22,676 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-11 07:02:22,677 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2040572422] [2021-06-11 07:02:22,677 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-11 07:02:22,677 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-06-11 07:02:22,677 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1286366020] [2021-06-11 07:02:22,678 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-06-11 07:02:22,678 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-11 07:02:22,680 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-06-11 07:02:22,680 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-06-11 07:02:22,682 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 74 out of 101 [2021-06-11 07:02:22,682 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 17 places, 12 transitions, 28 flow. Second operand has 4 states, 4 states have (on average 74.75) internal successors, (299), 4 states have internal predecessors, (299), 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) [2021-06-11 07:02:22,683 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-11 07:02:22,686 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 74 of 101 [2021-06-11 07:02:22,686 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-11 07:02:22,721 INFO L129 PetriNetUnfolder]: 6/27 cut-off events. [2021-06-11 07:02:22,721 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-06-11 07:02:22,721 INFO L84 FinitePrefix]: Finished finitePrefix Result has 53 conditions, 27 events. 6/27 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 57 event pairs, 2 based on Foata normal form. 4/31 useless extension candidates. Maximal degree in co-relation 46. Up to 15 conditions per place. [2021-06-11 07:02:22,727 INFO L132 encePairwiseOnDemand]: 96/101 looper letters, 4 selfloop transitions, 3 changer transitions 5/19 dead transitions. [2021-06-11 07:02:22,727 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 21 places, 19 transitions, 66 flow [2021-06-11 07:02:22,727 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-06-11 07:02:22,727 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-06-11 07:02:22,732 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 384 transitions. [2021-06-11 07:02:22,734 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.7603960396039604 [2021-06-11 07:02:22,734 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 384 transitions. [2021-06-11 07:02:22,734 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 384 transitions. [2021-06-11 07:02:22,736 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-11 07:02:22,736 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 384 transitions. [2021-06-11 07:02:22,738 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 76.8) internal successors, (384), 5 states have internal predecessors, (384), 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) [2021-06-11 07:02:22,741 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 101.0) internal successors, (606), 6 states have internal predecessors, (606), 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) [2021-06-11 07:02:22,742 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 101.0) internal successors, (606), 6 states have internal predecessors, (606), 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) [2021-06-11 07:02:22,742 INFO L185 Difference]: Start difference. First operand has 17 places, 12 transitions, 28 flow. Second operand 5 states and 384 transitions. [2021-06-11 07:02:22,742 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 21 places, 19 transitions, 66 flow [2021-06-11 07:02:22,742 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 21 places, 19 transitions, 66 flow, removed 0 selfloop flow, removed 0 redundant places. [2021-06-11 07:02:22,743 INFO L241 Difference]: Finished difference. Result has 24 places, 14 transitions, 55 flow [2021-06-11 07:02:22,744 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=101, PETRI_DIFFERENCE_MINUEND_FLOW=28, PETRI_DIFFERENCE_MINUEND_PLACES=17, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=12, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=9, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=55, PETRI_PLACES=24, PETRI_TRANSITIONS=14} [2021-06-11 07:02:22,744 INFO L343 CegarLoopForPetriNet]: 19 programPoint places, 5 predicate places. [2021-06-11 07:02:22,744 INFO L168 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-06-11 07:02:22,744 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 24 places, 14 transitions, 55 flow [2021-06-11 07:02:22,745 INFO L138 LiptonReduction]: Starting Lipton reduction on Petri net that has 24 places, 14 transitions, 55 flow [2021-06-11 07:02:22,746 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 22 places, 14 transitions, 55 flow [2021-06-11 07:02:22,751 INFO L129 PetriNetUnfolder]: 5/22 cut-off events. [2021-06-11 07:02:22,751 INFO L130 PetriNetUnfolder]: For 9/9 co-relation queries the response was YES. [2021-06-11 07:02:22,751 INFO L84 FinitePrefix]: Finished finitePrefix Result has 57 conditions, 22 events. 5/22 cut-off events. For 9/9 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 34 event pairs, 2 based on Foata normal form. 0/22 useless extension candidates. Maximal degree in co-relation 47. Up to 12 conditions per place. [2021-06-11 07:02:22,753 INFO L151 LiptonReduction]: Number of co-enabled transitions 44 [2021-06-11 07:02:22,755 INFO L163 LiptonReduction]: Checked pairs total: 48 [2021-06-11 07:02:22,755 INFO L165 LiptonReduction]: Total number of compositions: 0 [2021-06-11 07:02:22,756 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 12 [2021-06-11 07:02:22,757 INFO L480 AbstractCegarLoop]: Abstraction has has 22 places, 14 transitions, 55 flow [2021-06-11 07:02:22,757 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 74.75) internal successors, (299), 4 states have internal predecessors, (299), 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) [2021-06-11 07:02:22,757 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-11 07:02:22,757 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-11 07:02:22,757 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-06-11 07:02:22,758 INFO L428 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-11 07:02:22,758 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-11 07:02:22,758 INFO L82 PathProgramCache]: Analyzing trace with hash -350667723, now seen corresponding path program 1 times [2021-06-11 07:02:22,758 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-11 07:02:22,758 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [38552999] [2021-06-11 07:02:22,758 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-11 07:02:22,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-11 07:02:22,850 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 07:02:22,850 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-11 07:02:22,853 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 07:02:22,854 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-11 07:02:22,861 INFO L142 QuantifierPusher]: treesize reduction 11, result has 54.2 percent of original size [2021-06-11 07:02:22,863 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-11 07:02:22,870 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-11 07:02:22,870 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [38552999] [2021-06-11 07:02:22,870 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-11 07:02:22,872 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-06-11 07:02:22,872 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2146559266] [2021-06-11 07:02:22,872 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-06-11 07:02:22,872 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-11 07:02:22,873 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-06-11 07:02:22,873 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-06-11 07:02:22,875 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 74 out of 101 [2021-06-11 07:02:22,876 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 22 places, 14 transitions, 55 flow. Second operand has 5 states, 5 states have (on average 74.8) internal successors, (374), 5 states have internal predecessors, (374), 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) [2021-06-11 07:02:22,876 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-11 07:02:22,876 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 74 of 101 [2021-06-11 07:02:22,876 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-11 07:02:22,916 INFO L129 PetriNetUnfolder]: 2/18 cut-off events. [2021-06-11 07:02:22,916 INFO L130 PetriNetUnfolder]: For 13/15 co-relation queries the response was YES. [2021-06-11 07:02:22,916 INFO L84 FinitePrefix]: Finished finitePrefix Result has 57 conditions, 18 events. 2/18 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. 5/23 useless extension candidates. Maximal degree in co-relation 47. Up to 10 conditions per place. [2021-06-11 07:02:22,919 INFO L132 encePairwiseOnDemand]: 96/101 looper letters, 2 selfloop transitions, 5 changer transitions 3/17 dead transitions. [2021-06-11 07:02:22,920 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 27 places, 17 transitions, 91 flow [2021-06-11 07:02:22,920 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-06-11 07:02:22,920 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2021-06-11 07:02:22,921 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 456 transitions. [2021-06-11 07:02:22,922 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.7524752475247525 [2021-06-11 07:02:22,922 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 456 transitions. [2021-06-11 07:02:22,922 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 456 transitions. [2021-06-11 07:02:22,922 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-11 07:02:22,922 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 456 transitions. [2021-06-11 07:02:22,924 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 76.0) internal successors, (456), 6 states have internal predecessors, (456), 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) [2021-06-11 07:02:22,925 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 101.0) internal successors, (707), 7 states have internal predecessors, (707), 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) [2021-06-11 07:02:22,925 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 101.0) internal successors, (707), 7 states have internal predecessors, (707), 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) [2021-06-11 07:02:22,925 INFO L185 Difference]: Start difference. First operand has 22 places, 14 transitions, 55 flow. Second operand 6 states and 456 transitions. [2021-06-11 07:02:22,925 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 27 places, 17 transitions, 91 flow [2021-06-11 07:02:22,926 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 25 places, 17 transitions, 78 flow, removed 5 selfloop flow, removed 2 redundant places. [2021-06-11 07:02:22,927 INFO L241 Difference]: Finished difference. Result has 28 places, 14 transitions, 66 flow [2021-06-11 07:02:22,927 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=101, PETRI_DIFFERENCE_MINUEND_FLOW=46, PETRI_DIFFERENCE_MINUEND_PLACES=20, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=14, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=9, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=66, PETRI_PLACES=28, PETRI_TRANSITIONS=14} [2021-06-11 07:02:22,927 INFO L343 CegarLoopForPetriNet]: 19 programPoint places, 9 predicate places. [2021-06-11 07:02:22,927 INFO L168 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-06-11 07:02:22,928 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 28 places, 14 transitions, 66 flow [2021-06-11 07:02:22,928 INFO L138 LiptonReduction]: Starting Lipton reduction on Petri net that has 28 places, 14 transitions, 66 flow [2021-06-11 07:02:22,929 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 26 places, 14 transitions, 66 flow [2021-06-11 07:02:22,938 INFO L129 PetriNetUnfolder]: 1/14 cut-off events. [2021-06-11 07:02:22,938 INFO L130 PetriNetUnfolder]: For 10/10 co-relation queries the response was YES. [2021-06-11 07:02:22,939 INFO L84 FinitePrefix]: Finished finitePrefix Result has 42 conditions, 14 events. 1/14 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. 0/14 useless extension candidates. Maximal degree in co-relation 31. Up to 6 conditions per place. [2021-06-11 07:02:22,939 INFO L151 LiptonReduction]: Number of co-enabled transitions 28 [2021-06-11 07:02:22,943 INFO L163 LiptonReduction]: Checked pairs total: 32 [2021-06-11 07:02:22,943 INFO L165 LiptonReduction]: Total number of compositions: 0 [2021-06-11 07:02:22,943 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 16 [2021-06-11 07:02:22,947 INFO L480 AbstractCegarLoop]: Abstraction has has 26 places, 14 transitions, 66 flow [2021-06-11 07:02:22,947 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 74.8) internal successors, (374), 5 states have internal predecessors, (374), 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) [2021-06-11 07:02:22,948 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-11 07:02:22,948 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-11 07:02:22,948 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-06-11 07:02:22,948 INFO L428 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-11 07:02:22,949 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-11 07:02:22,949 INFO L82 PathProgramCache]: Analyzing trace with hash -1391065027, now seen corresponding path program 1 times [2021-06-11 07:02:22,949 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-11 07:02:22,949 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [303119786] [2021-06-11 07:02:22,949 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-11 07:02:22,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-11 07:02:23,015 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 07:02:23,016 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-11 07:02:23,017 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 07:02:23,017 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-11 07:02:23,026 INFO L142 QuantifierPusher]: treesize reduction 3, result has 75.0 percent of original size [2021-06-11 07:02:23,027 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-06-11 07:02:23,033 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-11 07:02:23,034 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [303119786] [2021-06-11 07:02:23,034 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-11 07:02:23,034 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-06-11 07:02:23,034 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1769551086] [2021-06-11 07:02:23,034 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-06-11 07:02:23,034 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-11 07:02:23,035 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-06-11 07:02:23,035 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-06-11 07:02:23,036 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 74 out of 101 [2021-06-11 07:02:23,036 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 26 places, 14 transitions, 66 flow. Second operand has 4 states, 4 states have (on average 75.25) internal successors, (301), 4 states have internal predecessors, (301), 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) [2021-06-11 07:02:23,037 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-11 07:02:23,037 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 74 of 101 [2021-06-11 07:02:23,037 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-11 07:02:23,066 INFO L129 PetriNetUnfolder]: 3/25 cut-off events. [2021-06-11 07:02:23,066 INFO L130 PetriNetUnfolder]: For 29/29 co-relation queries the response was YES. [2021-06-11 07:02:23,067 INFO L84 FinitePrefix]: Finished finitePrefix Result has 78 conditions, 25 events. 3/25 cut-off events. For 29/29 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 47 event pairs, 0 based on Foata normal form. 1/25 useless extension candidates. Maximal degree in co-relation 65. Up to 12 conditions per place. [2021-06-11 07:02:23,067 INFO L132 encePairwiseOnDemand]: 97/101 looper letters, 4 selfloop transitions, 3 changer transitions 0/16 dead transitions. [2021-06-11 07:02:23,067 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 29 places, 16 transitions, 84 flow [2021-06-11 07:02:23,068 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-06-11 07:02:23,068 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2021-06-11 07:02:23,069 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 304 transitions. [2021-06-11 07:02:23,069 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.7524752475247525 [2021-06-11 07:02:23,070 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 304 transitions. [2021-06-11 07:02:23,070 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 304 transitions. [2021-06-11 07:02:23,070 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-11 07:02:23,070 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 304 transitions. [2021-06-11 07:02:23,071 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 76.0) internal successors, (304), 4 states have internal predecessors, (304), 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) [2021-06-11 07:02:23,072 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 101.0) internal successors, (505), 5 states have internal predecessors, (505), 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) [2021-06-11 07:02:23,072 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 101.0) internal successors, (505), 5 states have internal predecessors, (505), 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) [2021-06-11 07:02:23,072 INFO L185 Difference]: Start difference. First operand has 26 places, 14 transitions, 66 flow. Second operand 4 states and 304 transitions. [2021-06-11 07:02:23,072 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 29 places, 16 transitions, 84 flow [2021-06-11 07:02:23,073 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 24 places, 16 transitions, 68 flow, removed 5 selfloop flow, removed 5 redundant places. [2021-06-11 07:02:23,074 INFO L241 Difference]: Finished difference. Result has 26 places, 16 transitions, 71 flow [2021-06-11 07:02:23,074 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=101, PETRI_DIFFERENCE_MINUEND_FLOW=50, PETRI_DIFFERENCE_MINUEND_PLACES=21, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=14, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=11, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=71, PETRI_PLACES=26, PETRI_TRANSITIONS=16} [2021-06-11 07:02:23,074 INFO L343 CegarLoopForPetriNet]: 19 programPoint places, 7 predicate places. [2021-06-11 07:02:23,074 INFO L168 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-06-11 07:02:23,074 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 26 places, 16 transitions, 71 flow [2021-06-11 07:02:23,075 INFO L138 LiptonReduction]: Starting Lipton reduction on Petri net that has 26 places, 16 transitions, 71 flow [2021-06-11 07:02:23,075 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 26 places, 16 transitions, 71 flow [2021-06-11 07:02:23,083 INFO L129 PetriNetUnfolder]: 3/25 cut-off events. [2021-06-11 07:02:23,083 INFO L130 PetriNetUnfolder]: For 11/11 co-relation queries the response was YES. [2021-06-11 07:02:23,084 INFO L84 FinitePrefix]: Finished finitePrefix Result has 66 conditions, 25 events. 3/25 cut-off events. For 11/11 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 40 event pairs, 0 based on Foata normal form. 0/24 useless extension candidates. Maximal degree in co-relation 55. Up to 8 conditions per place. [2021-06-11 07:02:23,084 INFO L151 LiptonReduction]: Number of co-enabled transitions 26 [2021-06-11 07:02:23,110 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 07:02:23,111 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-11 07:02:23,117 INFO L163 LiptonReduction]: Checked pairs total: 16 [2021-06-11 07:02:23,118 INFO L165 LiptonReduction]: Total number of compositions: 1 [2021-06-11 07:02:23,118 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 44 [2021-06-11 07:02:23,119 INFO L480 AbstractCegarLoop]: Abstraction has has 26 places, 16 transitions, 74 flow [2021-06-11 07:02:23,119 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 75.25) internal successors, (301), 4 states have internal predecessors, (301), 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) [2021-06-11 07:02:23,119 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-11 07:02:23,119 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-11 07:02:23,119 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-06-11 07:02:23,120 INFO L428 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-11 07:02:23,120 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-11 07:02:23,120 INFO L82 PathProgramCache]: Analyzing trace with hash 1277261931, now seen corresponding path program 2 times [2021-06-11 07:02:23,120 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-11 07:02:23,120 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1606791751] [2021-06-11 07:02:23,120 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-11 07:02:23,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-11 07:02:23,187 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 07:02:23,188 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-11 07:02:23,190 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 07:02:23,190 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-11 07:02:23,195 INFO L142 QuantifierPusher]: treesize reduction 3, result has 75.0 percent of original size [2021-06-11 07:02:23,196 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-06-11 07:02:23,202 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-11 07:02:23,202 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1606791751] [2021-06-11 07:02:23,203 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-11 07:02:23,203 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-06-11 07:02:23,203 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [237502267] [2021-06-11 07:02:23,203 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-06-11 07:02:23,203 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-11 07:02:23,204 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-06-11 07:02:23,204 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-06-11 07:02:23,205 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 74 out of 102 [2021-06-11 07:02:23,205 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 26 places, 16 transitions, 74 flow. Second operand has 4 states, 4 states have (on average 75.25) internal successors, (301), 4 states have internal predecessors, (301), 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) [2021-06-11 07:02:23,205 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-11 07:02:23,205 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 74 of 102 [2021-06-11 07:02:23,205 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-11 07:02:23,236 INFO L129 PetriNetUnfolder]: 4/28 cut-off events. [2021-06-11 07:02:23,236 INFO L130 PetriNetUnfolder]: For 28/29 co-relation queries the response was YES. [2021-06-11 07:02:23,237 INFO L84 FinitePrefix]: Finished finitePrefix Result has 88 conditions, 28 events. 4/28 cut-off events. For 28/29 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 61 event pairs, 0 based on Foata normal form. 2/29 useless extension candidates. Maximal degree in co-relation 75. Up to 9 conditions per place. [2021-06-11 07:02:23,237 INFO L132 encePairwiseOnDemand]: 97/102 looper letters, 0 selfloop transitions, 0 changer transitions 17/17 dead transitions. [2021-06-11 07:02:23,237 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 28 places, 17 transitions, 99 flow [2021-06-11 07:02:23,237 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-06-11 07:02:23,238 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2021-06-11 07:02:23,238 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 304 transitions. [2021-06-11 07:02:23,239 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.7450980392156863 [2021-06-11 07:02:23,239 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 304 transitions. [2021-06-11 07:02:23,239 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 304 transitions. [2021-06-11 07:02:23,239 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-11 07:02:23,239 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 304 transitions. [2021-06-11 07:02:23,240 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 76.0) internal successors, (304), 4 states have internal predecessors, (304), 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) [2021-06-11 07:02:23,241 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) [2021-06-11 07:02:23,242 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) [2021-06-11 07:02:23,242 INFO L185 Difference]: Start difference. First operand has 26 places, 16 transitions, 74 flow. Second operand 4 states and 304 transitions. [2021-06-11 07:02:23,242 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 28 places, 17 transitions, 99 flow [2021-06-11 07:02:23,244 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 26 places, 17 transitions, 89 flow, removed 2 selfloop flow, removed 2 redundant places. [2021-06-11 07:02:23,244 INFO L241 Difference]: Finished difference. Result has 26 places, 0 transitions, 0 flow [2021-06-11 07:02:23,244 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=102, PETRI_DIFFERENCE_MINUEND_FLOW=64, PETRI_DIFFERENCE_MINUEND_PLACES=23, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=15, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=15, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=0, PETRI_PLACES=26, PETRI_TRANSITIONS=0} [2021-06-11 07:02:23,245 INFO L343 CegarLoopForPetriNet]: 19 programPoint places, 7 predicate places. [2021-06-11 07:02:23,245 INFO L168 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-06-11 07:02:23,245 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 26 places, 0 transitions, 0 flow [2021-06-11 07:02:23,245 INFO L138 LiptonReduction]: Starting Lipton reduction on Petri net that has 26 places, 0 transitions, 0 flow [2021-06-11 07:02:23,245 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 0 places, 0 transitions, 0 flow [2021-06-11 07:02:23,245 INFO L129 PetriNetUnfolder]: 0/0 cut-off events. [2021-06-11 07:02:23,245 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-06-11 07:02:23,246 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. [2021-06-11 07:02:23,246 INFO L151 LiptonReduction]: Number of co-enabled transitions 0 [2021-06-11 07:02:23,246 INFO L163 LiptonReduction]: Checked pairs total: 0 [2021-06-11 07:02:23,246 INFO L165 LiptonReduction]: Total number of compositions: 0 [2021-06-11 07:02:23,246 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 1 [2021-06-11 07:02:23,247 INFO L480 AbstractCegarLoop]: Abstraction has has 0 places, 0 transitions, 0 flow [2021-06-11 07:02:23,247 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 75.25) internal successors, (301), 4 states have internal predecessors, (301), 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) [2021-06-11 07:02:23,247 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-06-11 07:02:23,251 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 11.06 07:02:23 BasicIcfg [2021-06-11 07:02:23,251 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-06-11 07:02:23,252 INFO L168 Benchmark]: Toolchain (without parser) took 4647.18 ms. Allocated memory is still 362.8 MB. Free memory was 326.0 MB in the beginning and 275.8 MB in the end (delta: 50.2 MB). Peak memory consumption was 52.1 MB. Max. memory is 16.0 GB. [2021-06-11 07:02:23,252 INFO L168 Benchmark]: CDTParser took 1.02 ms. Allocated memory is still 362.8 MB. Free memory was 344.3 MB in the beginning and 344.2 MB in the end (delta: 76.2 kB). There was no memory consumed. Max. memory is 16.0 GB. [2021-06-11 07:02:23,252 INFO L168 Benchmark]: CACSL2BoogieTranslator took 468.78 ms. Allocated memory is still 362.8 MB. Free memory was 325.8 MB in the beginning and 320.7 MB in the end (delta: 5.1 MB). Peak memory consumption was 7.2 MB. Max. memory is 16.0 GB. [2021-06-11 07:02:23,253 INFO L168 Benchmark]: Boogie Procedure Inliner took 55.95 ms. Allocated memory is still 362.8 MB. Free memory was 320.7 MB in the beginning and 318.6 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-06-11 07:02:23,253 INFO L168 Benchmark]: Boogie Preprocessor took 34.27 ms. Allocated memory is still 362.8 MB. Free memory was 318.6 MB in the beginning and 316.5 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-06-11 07:02:23,253 INFO L168 Benchmark]: RCFGBuilder took 477.28 ms. Allocated memory is still 362.8 MB. Free memory was 316.5 MB in the beginning and 295.6 MB in the end (delta: 21.0 MB). Peak memory consumption was 21.0 MB. Max. memory is 16.0 GB. [2021-06-11 07:02:23,253 INFO L168 Benchmark]: TraceAbstraction took 3604.44 ms. Allocated memory is still 362.8 MB. Free memory was 294.5 MB in the beginning and 275.8 MB in the end (delta: 18.7 MB). Peak memory consumption was 19.7 MB. Max. memory is 16.0 GB. [2021-06-11 07:02:23,255 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 1.02 ms. Allocated memory is still 362.8 MB. Free memory was 344.3 MB in the beginning and 344.2 MB in the end (delta: 76.2 kB). There was no memory consumed. Max. memory is 16.0 GB. * CACSL2BoogieTranslator took 468.78 ms. Allocated memory is still 362.8 MB. Free memory was 325.8 MB in the beginning and 320.7 MB in the end (delta: 5.1 MB). Peak memory consumption was 7.2 MB. Max. memory is 16.0 GB. * Boogie Procedure Inliner took 55.95 ms. Allocated memory is still 362.8 MB. Free memory was 320.7 MB in the beginning and 318.6 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * Boogie Preprocessor took 34.27 ms. Allocated memory is still 362.8 MB. Free memory was 318.6 MB in the beginning and 316.5 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * RCFGBuilder took 477.28 ms. Allocated memory is still 362.8 MB. Free memory was 316.5 MB in the beginning and 295.6 MB in the end (delta: 21.0 MB). Peak memory consumption was 21.0 MB. Max. memory is 16.0 GB. * TraceAbstraction took 3604.44 ms. Allocated memory is still 362.8 MB. Free memory was 294.5 MB in the beginning and 275.8 MB in the end (delta: 18.7 MB). Peak memory consumption was 19.7 MB. Max. memory is 16.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 2415.1ms, 55 PlacesBefore, 19 PlacesAfterwards, 49 TransitionsBefore, 13 TransitionsAfterwards, 456 CoEnabledTransitionPairs, 6 FixpointIterations, 17 TrivialSequentialCompositions, 20 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 3 ConcurrentYvCompositions, 0 ChoiceCompositions, 40 TotalNumberOfCompositions, 844 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 524, positive: 466, positive conditional: 0, positive unconditional: 466, negative: 58, negative conditional: 0, negative unconditional: 58, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 339, positive: 317, positive conditional: 0, positive unconditional: 317, negative: 22, negative conditional: 0, negative unconditional: 22, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 339, positive: 317, positive conditional: 0, positive unconditional: 317, negative: 22, negative conditional: 0, negative unconditional: 22, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 339, positive: 315, positive conditional: 0, positive unconditional: 315, negative: 24, negative conditional: 0, negative unconditional: 24, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 24, positive: 2, positive conditional: 0, positive unconditional: 2, negative: 22, negative conditional: 0, negative unconditional: 22, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 95, positive: 9, positive conditional: 0, positive unconditional: 9, negative: 87, negative conditional: 0, negative unconditional: 87, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 524, positive: 149, positive conditional: 0, positive unconditional: 149, negative: 36, negative conditional: 0, negative unconditional: 36, unknown: 339, unknown conditional: 0, unknown unconditional: 339] , Statistics on independence cache: Total cache size (in pairs): 575, Positive cache size: 553, Positive conditional cache size: 0, Positive unconditional cache size: 553, Negative cache size: 22, Negative conditional cache size: 0, Negative unconditional cache size: 22 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 4.3ms, 18 PlacesBefore, 17 PlacesAfterwards, 12 TransitionsBefore, 12 TransitionsAfterwards, 54 CoEnabledTransitionPairs, 1 FixpointIterations, 0 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 0 TotalNumberOfCompositions, 60 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 26, positive: 16, positive conditional: 0, positive unconditional: 16, negative: 10, negative conditional: 0, negative unconditional: 10, 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: 26, positive: 16, positive conditional: 0, positive unconditional: 16, negative: 10, negative conditional: 0, negative unconditional: 10, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Statistics on independence cache: Total cache size (in pairs): 575, Positive cache size: 553, Positive conditional cache size: 0, Positive unconditional cache size: 553, Negative cache size: 22, Negative conditional cache size: 0, Negative unconditional cache size: 22 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 10.0ms, 24 PlacesBefore, 22 PlacesAfterwards, 14 TransitionsBefore, 14 TransitionsAfterwards, 44 CoEnabledTransitionPairs, 1 FixpointIterations, 0 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 0 TotalNumberOfCompositions, 48 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 16, positive: 8, positive conditional: 0, positive unconditional: 8, negative: 8, negative conditional: 0, negative unconditional: 8, 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: 16, positive: 8, positive conditional: 0, positive unconditional: 8, negative: 8, negative conditional: 0, negative unconditional: 8, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Statistics on independence cache: Total cache size (in pairs): 575, Positive cache size: 553, Positive conditional cache size: 0, Positive unconditional cache size: 553, Negative cache size: 22, Negative conditional cache size: 0, Negative unconditional cache size: 22 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 14.7ms, 28 PlacesBefore, 26 PlacesAfterwards, 14 TransitionsBefore, 14 TransitionsAfterwards, 28 CoEnabledTransitionPairs, 1 FixpointIterations, 0 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 0 TotalNumberOfCompositions, 32 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 19, positive: 11, positive conditional: 0, positive unconditional: 11, negative: 8, negative conditional: 0, negative unconditional: 8, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 4, positive: 3, positive conditional: 0, positive unconditional: 3, negative: 1, negative conditional: 0, negative unconditional: 1, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 4, positive: 3, positive conditional: 0, positive unconditional: 3, negative: 1, negative conditional: 0, negative unconditional: 1, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 4, positive: 3, positive conditional: 0, positive unconditional: 3, negative: 1, negative conditional: 0, negative unconditional: 1, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 1, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 1, negative conditional: 0, negative unconditional: 1, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 3, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 3, negative conditional: 0, negative unconditional: 3, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 19, positive: 8, positive conditional: 0, positive unconditional: 8, negative: 7, negative conditional: 0, negative unconditional: 7, unknown: 4, unknown conditional: 0, unknown unconditional: 4] , Statistics on independence cache: Total cache size (in pairs): 579, Positive cache size: 556, Positive conditional cache size: 0, Positive unconditional cache size: 556, Negative cache size: 23, Negative conditional cache size: 0, Negative unconditional cache size: 23 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 43.1ms, 26 PlacesBefore, 26 PlacesAfterwards, 16 TransitionsBefore, 16 TransitionsAfterwards, 26 CoEnabledTransitionPairs, 2 FixpointIterations, 0 TrivialSequentialCompositions, 1 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 1 TotalNumberOfCompositions, 16 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 12, positive: 8, positive conditional: 0, positive unconditional: 8, negative: 4, negative conditional: 0, negative unconditional: 4, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 1, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 1, negative conditional: 0, negative unconditional: 1, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 1, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 1, negative conditional: 0, negative unconditional: 1, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 1, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 1, negative conditional: 0, negative unconditional: 1, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 1, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 1, negative conditional: 0, negative unconditional: 1, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 3, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 3, negative conditional: 0, negative unconditional: 3, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 12, positive: 8, positive conditional: 0, positive unconditional: 8, negative: 3, negative conditional: 0, negative unconditional: 3, unknown: 1, unknown conditional: 0, unknown unconditional: 1] , Statistics on independence cache: Total cache size (in pairs): 605, Positive cache size: 581, Positive conditional cache size: 0, Positive unconditional cache size: 581, Negative cache size: 24, Negative conditional cache size: 0, Negative unconditional cache size: 24 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 0.8ms, 26 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): 605, Positive cache size: 581, Positive conditional cache size: 0, Positive unconditional cache size: 581, Negative cache size: 24, Negative conditional cache size: 0, Negative unconditional cache size: 24 - 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: 2.3ms, RemoveRedundantFlowTime: 0.0ms, RemoveRedundantFlowUnfoldingTime: 0.0ms, BackfoldingTime: 0.0ms, BackfoldingUnfoldingTime: 0.0ms, FlowIncreaseByBackfolding: 0, BasicCegarLoop: VerificationResult: SAFE, OverallTime: 3495.2ms, OverallIterations: 5, TraceHistogramMax: 1, EmptinessCheckTime: 0.0ms, AutomataDifference: 241.7ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 2519.8ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 15 SDtfs, 8 SDslu, 8 SDs, 0 SdLazy, 53 SolverSat, 7 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 51.9ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 16 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 74.5ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=74occurred in iteration=4, InterpolantAutomatonStates: 21, 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: 20.7ms SsaConstructionTime, 126.1ms SatisfiabilityAnalysisTime, 353.8ms InterpolantComputationTime, 44 NumberOfCodeBlocks, 44 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 39 ConstructedInterpolants, 0 QuantifiedInterpolants, 139 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 5 InterpolantComputations, 5 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! Received shutdown request...