/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-SemanticLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/pthread-wmm/safe032_tso.opt.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-7cd14b8b9f04096d8ddfd3d9cd8a4ac590fe5404-7cd14b8 [2021-03-11 20:29:52,099 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-03-11 20:29:52,101 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-03-11 20:29:52,127 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-03-11 20:29:52,136 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-03-11 20:29:52,136 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-03-11 20:29:52,137 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-03-11 20:29:52,138 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-03-11 20:29:52,139 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-03-11 20:29:52,139 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-03-11 20:29:52,141 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-03-11 20:29:52,142 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-03-11 20:29:52,144 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-03-11 20:29:52,145 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-03-11 20:29:52,146 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-03-11 20:29:52,147 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-03-11 20:29:52,149 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-03-11 20:29:52,156 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-03-11 20:29:52,156 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-03-11 20:29:52,157 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-03-11 20:29:52,158 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-SemanticLbe.epf [2021-03-11 20:29:52,177 INFO L113 SettingsManager]: Loading preferences was successful [2021-03-11 20:29:52,177 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-03-11 20:29:52,180 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-03-11 20:29:52,180 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-03-11 20:29:52,180 INFO L138 SettingsManager]: * Use SBE=true [2021-03-11 20:29:52,181 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-03-11 20:29:52,181 INFO L138 SettingsManager]: * sizeof long=4 [2021-03-11 20:29:52,181 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-03-11 20:29:52,181 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-03-11 20:29:52,181 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-03-11 20:29:52,182 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-03-11 20:29:52,182 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-03-11 20:29:52,182 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-03-11 20:29:52,182 INFO L138 SettingsManager]: * sizeof long double=12 [2021-03-11 20:29:52,182 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-03-11 20:29:52,183 INFO L138 SettingsManager]: * Use constant arrays=true [2021-03-11 20:29:52,183 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-03-11 20:29:52,183 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-03-11 20:29:52,183 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-03-11 20:29:52,183 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-03-11 20:29:52,183 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-03-11 20:29:52,183 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-03-11 20:29:52,184 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-03-11 20:29:52,184 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-03-11 20:29:52,184 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-03-11 20:29:52,184 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-03-11 20:29:52,184 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-03-11 20:29:52,185 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-03-11 20:29:52,185 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-03-11 20:29:52,479 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-03-11 20:29:52,514 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-03-11 20:29:52,517 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-03-11 20:29:52,518 INFO L271 PluginConnector]: Initializing CDTParser... [2021-03-11 20:29:52,518 INFO L275 PluginConnector]: CDTParser initialized [2021-03-11 20:29:52,519 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe032_tso.opt.i [2021-03-11 20:29:52,591 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/913e4402b/36b46051316a4b5abbe18b65e476ae0f/FLAG4968eae6c [2021-03-11 20:29:53,167 INFO L306 CDTParser]: Found 1 translation units. [2021-03-11 20:29:53,167 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe032_tso.opt.i [2021-03-11 20:29:53,181 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/913e4402b/36b46051316a4b5abbe18b65e476ae0f/FLAG4968eae6c [2021-03-11 20:29:53,574 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/913e4402b/36b46051316a4b5abbe18b65e476ae0f [2021-03-11 20:29:53,576 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-03-11 20:29:53,582 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-03-11 20:29:53,585 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-03-11 20:29:53,585 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-03-11 20:29:53,588 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-03-11 20:29:53,589 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.03 08:29:53" (1/1) ... [2021-03-11 20:29:53,591 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7334232b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 08:29:53, skipping insertion in model container [2021-03-11 20:29:53,591 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.03 08:29:53" (1/1) ... [2021-03-11 20:29:53,596 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-03-11 20:29:53,642 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-03-11 20:29:53,835 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/safe032_tso.opt.i[949,962] [2021-03-11 20:29:54,004 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-03-11 20:29:54,011 INFO L203 MainTranslator]: Completed pre-run [2021-03-11 20:29:54,022 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/safe032_tso.opt.i[949,962] [2021-03-11 20:29:54,062 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-03-11 20:29:54,134 INFO L208 MainTranslator]: Completed translation [2021-03-11 20:29:54,135 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 08:29:54 WrapperNode [2021-03-11 20:29:54,135 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-03-11 20:29:54,139 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-03-11 20:29:54,139 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-03-11 20:29:54,140 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-03-11 20:29:54,146 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 08:29:54" (1/1) ... [2021-03-11 20:29:54,166 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 08:29:54" (1/1) ... [2021-03-11 20:29:54,180 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-03-11 20:29:54,180 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-03-11 20:29:54,181 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-03-11 20:29:54,181 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-03-11 20:29:54,187 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 08:29:54" (1/1) ... [2021-03-11 20:29:54,187 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 08:29:54" (1/1) ... [2021-03-11 20:29:54,190 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 08:29:54" (1/1) ... [2021-03-11 20:29:54,190 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 08:29:54" (1/1) ... [2021-03-11 20:29:54,194 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 08:29:54" (1/1) ... [2021-03-11 20:29:54,196 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 08:29:54" (1/1) ... [2021-03-11 20:29:54,197 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 08:29:54" (1/1) ... [2021-03-11 20:29:54,205 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-03-11 20:29:54,205 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-03-11 20:29:54,205 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-03-11 20:29:54,206 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-03-11 20:29:54,207 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 08:29:54" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-03-11 20:29:54,266 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-03-11 20:29:54,266 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-03-11 20:29:54,266 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-03-11 20:29:54,267 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-03-11 20:29:54,267 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2021-03-11 20:29:54,267 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2021-03-11 20:29:54,268 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2021-03-11 20:29:54,268 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2021-03-11 20:29:54,269 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2021-03-11 20:29:54,269 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2021-03-11 20:29:54,269 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-03-11 20:29:54,269 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-03-11 20:29:54,269 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-03-11 20:29:54,269 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-03-11 20:29:54,271 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-03-11 20:29:54,633 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-03-11 20:29:54,633 INFO L299 CfgBuilder]: Removed 8 assume(true) statements. [2021-03-11 20:29:54,636 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.03 08:29:54 BoogieIcfgContainer [2021-03-11 20:29:54,636 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-03-11 20:29:54,638 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-03-11 20:29:54,638 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-03-11 20:29:54,640 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-03-11 20:29:54,641 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.03 08:29:53" (1/3) ... [2021-03-11 20:29:54,641 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7cbd80b4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.03 08:29:54, skipping insertion in model container [2021-03-11 20:29:54,642 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 08:29:54" (2/3) ... [2021-03-11 20:29:54,642 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7cbd80b4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.03 08:29:54, skipping insertion in model container [2021-03-11 20:29:54,642 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.03 08:29:54" (3/3) ... [2021-03-11 20:29:54,643 INFO L111 eAbstractionObserver]: Analyzing ICFG safe032_tso.opt.i [2021-03-11 20:29:54,649 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-03-11 20:29:54,653 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-03-11 20:29:54,654 INFO L323 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-03-11 20:29:54,685 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:29:54,685 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:29:54,686 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:29:54,686 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:29:54,686 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:29:54,686 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:29:54,686 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:29:54,686 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:29:54,687 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:29:54,687 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:29:54,687 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:29:54,687 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:29:54,688 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:29:54,688 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:29:54,688 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:29:54,688 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:29:54,689 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:29:54,689 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:29:54,689 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:29:54,689 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:29:54,689 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:29:54,689 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:29:54,689 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:29:54,690 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:29:54,691 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:29:54,692 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:29:54,692 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:29:54,692 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:29:54,693 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:29:54,693 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:29:54,693 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:29:54,693 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:29:54,694 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:29:54,694 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:29:54,694 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:29:54,694 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:29:54,696 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:29:54,696 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:29:54,696 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:29:54,697 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:29:54,703 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:29:54,703 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:29:54,704 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:29:54,704 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:29:54,709 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:29:54,709 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:29:54,709 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:29:54,709 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:29:54,713 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-03-11 20:29:54,729 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2021-03-11 20:29:54,743 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-03-11 20:29:54,743 INFO L377 AbstractCegarLoop]: Hoare is false [2021-03-11 20:29:54,743 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-03-11 20:29:54,743 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-03-11 20:29:54,743 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-03-11 20:29:54,744 INFO L381 AbstractCegarLoop]: Difference is false [2021-03-11 20:29:54,744 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-03-11 20:29:54,744 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-03-11 20:29:54,757 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 82 places, 74 transitions, 163 flow [2021-03-11 20:29:54,822 INFO L129 PetriNetUnfolder]: 2/71 cut-off events. [2021-03-11 20:29:54,822 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-11 20:29:54,825 INFO L84 FinitePrefix]: Finished finitePrefix Result has 81 conditions, 71 events. 2/71 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 54 event pairs, 0 based on Foata normal form. 0/68 useless extension candidates. Maximal degree in co-relation 56. Up to 2 conditions per place. [2021-03-11 20:29:54,826 INFO L82 GeneralOperation]: Start removeDead. Operand has 82 places, 74 transitions, 163 flow [2021-03-11 20:29:54,831 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 68 places, 59 transitions, 127 flow [2021-03-11 20:29:54,834 INFO L118 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-03-11 20:29:54,843 INFO L133 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 68 places, 59 transitions, 127 flow [2021-03-11 20:29:54,848 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 68 places, 59 transitions, 127 flow [2021-03-11 20:29:54,848 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 68 places, 59 transitions, 127 flow [2021-03-11 20:29:54,877 INFO L129 PetriNetUnfolder]: 1/59 cut-off events. [2021-03-11 20:29:54,877 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-11 20:29:54,877 INFO L84 FinitePrefix]: Finished finitePrefix Result has 69 conditions, 59 events. 1/59 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 46 event pairs, 0 based on Foata normal form. 0/58 useless extension candidates. Maximal degree in co-relation 44. Up to 2 conditions per place. [2021-03-11 20:29:54,880 INFO L116 LiptonReduction]: Number of co-enabled transitions 864 [2021-03-11 20:29:56,878 WARN L205 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 74 [2021-03-11 20:29:57,101 WARN L205 SmtUtils]: Spent 156.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 74 [2021-03-11 20:29:57,167 INFO L131 LiptonReduction]: Checked pairs total: 1617 [2021-03-11 20:29:57,168 INFO L133 LiptonReduction]: Total number of compositions: 47 [2021-03-11 20:29:57,179 INFO L182 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 2348 [2021-03-11 20:29:57,189 INFO L129 PetriNetUnfolder]: 0/13 cut-off events. [2021-03-11 20:29:57,189 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-11 20:29:57,189 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 20:29:57,190 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-03-11 20:29:57,190 INFO L428 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-11 20:29:57,194 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 20:29:57,194 INFO L82 PathProgramCache]: Analyzing trace with hash -466282091, now seen corresponding path program 1 times [2021-03-11 20:29:57,201 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 20:29:57,201 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [144560239] [2021-03-11 20:29:57,201 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 20:29:57,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 20:29:57,372 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 20:29:57,373 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 20:29:57,374 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 20:29:57,374 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [144560239] [2021-03-11 20:29:57,375 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 20:29:57,375 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-03-11 20:29:57,375 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2083139693] [2021-03-11 20:29:57,382 INFO L460 AbstractCegarLoop]: Interpolant automaton has 2 states [2021-03-11 20:29:57,382 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 20:29:57,391 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-03-11 20:29:57,393 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-03-11 20:29:57,394 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 114 out of 121 [2021-03-11 20:29:57,396 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 27 places, 18 transitions, 45 flow. Second operand has 2 states, 2 states have (on average 114.5) internal successors, (229), 2 states have internal predecessors, (229), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 20:29:57,396 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 20:29:57,396 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 114 of 121 [2021-03-11 20:29:57,397 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 20:29:57,403 INFO L129 PetriNetUnfolder]: 0/17 cut-off events. [2021-03-11 20:29:57,403 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-11 20:29:57,404 INFO L84 FinitePrefix]: Finished finitePrefix Result has 28 conditions, 17 events. 0/17 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 18 event pairs, 0 based on Foata normal form. 1/18 useless extension candidates. Maximal degree in co-relation 0. Up to 1 conditions per place. [2021-03-11 20:29:57,404 INFO L132 encePairwiseOnDemand]: 120/121 looper letters, 0 selfloop transitions, 0 changer transitions 0/17 dead transitions. [2021-03-11 20:29:57,405 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 28 places, 17 transitions, 43 flow [2021-03-11 20:29:57,405 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-03-11 20:29:57,406 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2021-03-11 20:29:57,412 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 229 transitions. [2021-03-11 20:29:57,414 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.9462809917355371 [2021-03-11 20:29:57,414 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 229 transitions. [2021-03-11 20:29:57,415 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 229 transitions. [2021-03-11 20:29:57,416 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 20:29:57,418 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 229 transitions. [2021-03-11 20:29:57,420 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 114.5) internal successors, (229), 2 states have internal predecessors, (229), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 20:29:57,424 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 121.0) internal successors, (363), 3 states have internal predecessors, (363), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 20:29:57,424 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 121.0) internal successors, (363), 3 states have internal predecessors, (363), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 20:29:57,425 INFO L185 Difference]: Start difference. First operand has 27 places, 18 transitions, 45 flow. Second operand 2 states and 229 transitions. [2021-03-11 20:29:57,426 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 28 places, 17 transitions, 43 flow [2021-03-11 20:29:57,428 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 25 places, 17 transitions, 40 flow, removed 0 selfloop flow, removed 3 redundant places. [2021-03-11 20:29:57,429 INFO L241 Difference]: Finished difference. Result has 25 places, 17 transitions, 40 flow [2021-03-11 20:29:57,430 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=121, PETRI_DIFFERENCE_MINUEND_FLOW=40, PETRI_DIFFERENCE_MINUEND_PLACES=24, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=17, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=40, PETRI_PLACES=25, PETRI_TRANSITIONS=17} [2021-03-11 20:29:57,431 INFO L335 CegarLoopForPetriNet]: 27 programPoint places, -2 predicate places. [2021-03-11 20:29:57,431 INFO L480 AbstractCegarLoop]: Abstraction has has 25 places, 17 transitions, 40 flow [2021-03-11 20:29:57,431 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 2 states, 2 states have (on average 114.5) internal successors, (229), 2 states have internal predecessors, (229), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 20:29:57,431 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 20:29:57,431 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 20:29:57,431 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-03-11 20:29:57,432 INFO L428 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-11 20:29:57,432 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 20:29:57,432 INFO L82 PathProgramCache]: Analyzing trace with hash -1569842931, now seen corresponding path program 1 times [2021-03-11 20:29:57,432 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 20:29:57,432 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1383471814] [2021-03-11 20:29:57,433 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 20:29:57,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 20:29:57,505 INFO L142 QuantifierPusher]: treesize reduction 3, result has 85.0 percent of original size [2021-03-11 20:29:57,506 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 20:29:57,517 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 20:29:57,518 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1383471814] [2021-03-11 20:29:57,518 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 20:29:57,518 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-03-11 20:29:57,518 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2142627472] [2021-03-11 20:29:57,519 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-03-11 20:29:57,519 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 20:29:57,520 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-03-11 20:29:57,520 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-11 20:29:57,521 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 121 [2021-03-11 20:29:57,521 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 25 places, 17 transitions, 40 flow. Second operand has 3 states, 3 states have (on average 89.66666666666667) internal successors, (269), 3 states have internal predecessors, (269), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 20:29:57,521 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 20:29:57,522 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 121 [2021-03-11 20:29:57,522 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 20:29:57,582 INFO L129 PetriNetUnfolder]: 91/209 cut-off events. [2021-03-11 20:29:57,582 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-11 20:29:57,583 INFO L84 FinitePrefix]: Finished finitePrefix Result has 384 conditions, 209 events. 91/209 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 29. Compared 953 event pairs, 31 based on Foata normal form. 18/220 useless extension candidates. Maximal degree in co-relation 381. Up to 113 conditions per place. [2021-03-11 20:29:57,584 INFO L132 encePairwiseOnDemand]: 113/121 looper letters, 7 selfloop transitions, 7 changer transitions 0/23 dead transitions. [2021-03-11 20:29:57,585 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 27 places, 23 transitions, 80 flow [2021-03-11 20:29:57,585 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-11 20:29:57,585 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-03-11 20:29:57,586 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 282 transitions. [2021-03-11 20:29:57,587 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.7768595041322314 [2021-03-11 20:29:57,587 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 282 transitions. [2021-03-11 20:29:57,587 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 282 transitions. [2021-03-11 20:29:57,588 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 20:29:57,588 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 282 transitions. [2021-03-11 20:29:57,590 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 94.0) internal successors, (282), 3 states have internal predecessors, (282), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 20:29:57,591 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 121.0) internal successors, (484), 4 states have internal predecessors, (484), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 20:29:57,592 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 121.0) internal successors, (484), 4 states have internal predecessors, (484), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 20:29:57,592 INFO L185 Difference]: Start difference. First operand has 25 places, 17 transitions, 40 flow. Second operand 3 states and 282 transitions. [2021-03-11 20:29:57,592 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 27 places, 23 transitions, 80 flow [2021-03-11 20:29:57,592 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 27 places, 23 transitions, 80 flow, removed 0 selfloop flow, removed 0 redundant places. [2021-03-11 20:29:57,593 INFO L241 Difference]: Finished difference. Result has 29 places, 23 transitions, 94 flow [2021-03-11 20:29:57,593 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=121, PETRI_DIFFERENCE_MINUEND_FLOW=40, PETRI_DIFFERENCE_MINUEND_PLACES=25, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=17, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=10, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=94, PETRI_PLACES=29, PETRI_TRANSITIONS=23} [2021-03-11 20:29:57,594 INFO L335 CegarLoopForPetriNet]: 27 programPoint places, 2 predicate places. [2021-03-11 20:29:57,594 INFO L480 AbstractCegarLoop]: Abstraction has has 29 places, 23 transitions, 94 flow [2021-03-11 20:29:57,594 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 89.66666666666667) internal successors, (269), 3 states have internal predecessors, (269), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 20:29:57,594 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 20:29:57,594 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 20:29:57,594 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-03-11 20:29:57,595 INFO L428 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-11 20:29:57,595 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 20:29:57,595 INFO L82 PathProgramCache]: Analyzing trace with hash -1420491223, now seen corresponding path program 1 times [2021-03-11 20:29:57,595 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 20:29:57,595 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1741257653] [2021-03-11 20:29:57,596 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 20:29:57,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 20:29:57,633 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 20:29:57,634 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 20:29:57,637 INFO L142 QuantifierPusher]: treesize reduction 3, result has 85.0 percent of original size [2021-03-11 20:29:57,638 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 20:29:57,646 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 20:29:57,646 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1741257653] [2021-03-11 20:29:57,646 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 20:29:57,647 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-03-11 20:29:57,647 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1037698693] [2021-03-11 20:29:57,647 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-03-11 20:29:57,647 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 20:29:57,648 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-03-11 20:29:57,648 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-03-11 20:29:57,649 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 121 [2021-03-11 20:29:57,650 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 29 places, 23 transitions, 94 flow. Second operand has 4 states, 4 states have (on average 89.75) internal successors, (359), 4 states have internal predecessors, (359), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 20:29:57,650 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 20:29:57,650 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 121 [2021-03-11 20:29:57,650 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 20:29:57,685 INFO L129 PetriNetUnfolder]: 48/125 cut-off events. [2021-03-11 20:29:57,685 INFO L130 PetriNetUnfolder]: For 44/142 co-relation queries the response was YES. [2021-03-11 20:29:57,686 INFO L84 FinitePrefix]: Finished finitePrefix Result has 383 conditions, 125 events. 48/125 cut-off events. For 44/142 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 465 event pairs, 7 based on Foata normal form. 10/130 useless extension candidates. Maximal degree in co-relation 378. Up to 66 conditions per place. [2021-03-11 20:29:57,687 INFO L132 encePairwiseOnDemand]: 114/121 looper letters, 13 selfloop transitions, 7 changer transitions 2/31 dead transitions. [2021-03-11 20:29:57,687 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 32 places, 31 transitions, 178 flow [2021-03-11 20:29:57,691 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-03-11 20:29:57,691 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2021-03-11 20:29:57,694 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 373 transitions. [2021-03-11 20:29:57,695 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.7706611570247934 [2021-03-11 20:29:57,695 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 373 transitions. [2021-03-11 20:29:57,695 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 373 transitions. [2021-03-11 20:29:57,696 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 20:29:57,696 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 373 transitions. [2021-03-11 20:29:57,697 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 93.25) internal successors, (373), 4 states have internal predecessors, (373), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 20:29:57,699 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 121.0) internal successors, (605), 5 states have internal predecessors, (605), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 20:29:57,699 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 121.0) internal successors, (605), 5 states have internal predecessors, (605), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 20:29:57,699 INFO L185 Difference]: Start difference. First operand has 29 places, 23 transitions, 94 flow. Second operand 4 states and 373 transitions. [2021-03-11 20:29:57,699 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 32 places, 31 transitions, 178 flow [2021-03-11 20:29:57,701 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 30 places, 31 transitions, 156 flow, removed 0 selfloop flow, removed 2 redundant places. [2021-03-11 20:29:57,701 INFO L241 Difference]: Finished difference. Result has 33 places, 27 transitions, 134 flow [2021-03-11 20:29:57,702 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=121, PETRI_DIFFERENCE_MINUEND_FLOW=80, PETRI_DIFFERENCE_MINUEND_PLACES=27, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=23, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=16, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=134, PETRI_PLACES=33, PETRI_TRANSITIONS=27} [2021-03-11 20:29:57,702 INFO L335 CegarLoopForPetriNet]: 27 programPoint places, 6 predicate places. [2021-03-11 20:29:57,702 INFO L480 AbstractCegarLoop]: Abstraction has has 33 places, 27 transitions, 134 flow [2021-03-11 20:29:57,702 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 89.75) internal successors, (359), 4 states have internal predecessors, (359), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 20:29:57,702 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 20:29:57,702 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 20:29:57,703 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-03-11 20:29:57,703 INFO L428 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-11 20:29:57,703 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 20:29:57,703 INFO L82 PathProgramCache]: Analyzing trace with hash 707098936, now seen corresponding path program 1 times [2021-03-11 20:29:57,703 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 20:29:57,703 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1513640633] [2021-03-11 20:29:57,704 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 20:29:57,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 20:29:57,733 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 20:29:57,733 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 20:29:57,734 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 20:29:57,734 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 20:29:57,741 INFO L142 QuantifierPusher]: treesize reduction 3, result has 85.0 percent of original size [2021-03-11 20:29:57,742 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 20:29:57,750 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 20:29:57,750 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1513640633] [2021-03-11 20:29:57,750 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 20:29:57,751 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-11 20:29:57,751 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1297054541] [2021-03-11 20:29:57,751 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-03-11 20:29:57,751 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 20:29:57,751 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-03-11 20:29:57,752 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-03-11 20:29:57,753 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 121 [2021-03-11 20:29:57,753 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 33 places, 27 transitions, 134 flow. Second operand has 4 states, 4 states have (on average 90.25) internal successors, (361), 4 states have internal predecessors, (361), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 20:29:57,753 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 20:29:57,753 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 121 [2021-03-11 20:29:57,753 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 20:29:57,805 INFO L129 PetriNetUnfolder]: 54/149 cut-off events. [2021-03-11 20:29:57,805 INFO L130 PetriNetUnfolder]: For 105/246 co-relation queries the response was YES. [2021-03-11 20:29:57,808 INFO L84 FinitePrefix]: Finished finitePrefix Result has 510 conditions, 149 events. 54/149 cut-off events. For 105/246 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 648 event pairs, 3 based on Foata normal form. 11/158 useless extension candidates. Maximal degree in co-relation 503. Up to 84 conditions per place. [2021-03-11 20:29:57,810 INFO L132 encePairwiseOnDemand]: 113/121 looper letters, 12 selfloop transitions, 13 changer transitions 5/39 dead transitions. [2021-03-11 20:29:57,810 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 36 places, 39 transitions, 270 flow [2021-03-11 20:29:57,810 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-03-11 20:29:57,810 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2021-03-11 20:29:57,811 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 376 transitions. [2021-03-11 20:29:57,811 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.7768595041322314 [2021-03-11 20:29:57,811 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 376 transitions. [2021-03-11 20:29:57,812 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 376 transitions. [2021-03-11 20:29:57,812 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 20:29:57,812 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 376 transitions. [2021-03-11 20:29:57,813 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 94.0) internal successors, (376), 4 states have internal predecessors, (376), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 20:29:57,816 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 121.0) internal successors, (605), 5 states have internal predecessors, (605), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 20:29:57,816 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 121.0) internal successors, (605), 5 states have internal predecessors, (605), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 20:29:57,816 INFO L185 Difference]: Start difference. First operand has 33 places, 27 transitions, 134 flow. Second operand 4 states and 376 transitions. [2021-03-11 20:29:57,816 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 36 places, 39 transitions, 270 flow [2021-03-11 20:29:57,819 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 39 transitions, 265 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-03-11 20:29:57,820 INFO L241 Difference]: Finished difference. Result has 38 places, 32 transitions, 230 flow [2021-03-11 20:29:57,821 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=121, PETRI_DIFFERENCE_MINUEND_FLOW=131, PETRI_DIFFERENCE_MINUEND_PLACES=32, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=27, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=14, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=230, PETRI_PLACES=38, PETRI_TRANSITIONS=32} [2021-03-11 20:29:57,821 INFO L335 CegarLoopForPetriNet]: 27 programPoint places, 11 predicate places. [2021-03-11 20:29:57,821 INFO L480 AbstractCegarLoop]: Abstraction has has 38 places, 32 transitions, 230 flow [2021-03-11 20:29:57,821 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 90.25) internal successors, (361), 4 states have internal predecessors, (361), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 20:29:57,821 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 20:29:57,821 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 20:29:57,822 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-03-11 20:29:57,822 INFO L428 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-11 20:29:57,822 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 20:29:57,822 INFO L82 PathProgramCache]: Analyzing trace with hash -722066415, now seen corresponding path program 1 times [2021-03-11 20:29:57,822 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 20:29:57,822 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [467449238] [2021-03-11 20:29:57,823 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 20:29:57,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 20:29:57,891 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 20:29:57,891 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 20:29:57,899 INFO L142 QuantifierPusher]: treesize reduction 3, result has 85.0 percent of original size [2021-03-11 20:29:57,900 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 20:29:57,910 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 20:29:57,911 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [467449238] [2021-03-11 20:29:57,911 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 20:29:57,911 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-03-11 20:29:57,911 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [747961492] [2021-03-11 20:29:57,911 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-03-11 20:29:57,912 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 20:29:57,913 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-03-11 20:29:57,913 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-03-11 20:29:57,915 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 121 [2021-03-11 20:29:57,916 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 38 places, 32 transitions, 230 flow. Second operand has 4 states, 4 states have (on average 90.25) internal successors, (361), 4 states have internal predecessors, (361), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 20:29:57,916 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 20:29:57,916 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 121 [2021-03-11 20:29:57,916 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 20:29:57,949 INFO L129 PetriNetUnfolder]: 28/86 cut-off events. [2021-03-11 20:29:57,949 INFO L130 PetriNetUnfolder]: For 199/362 co-relation queries the response was YES. [2021-03-11 20:29:57,950 INFO L84 FinitePrefix]: Finished finitePrefix Result has 379 conditions, 86 events. 28/86 cut-off events. For 199/362 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 287 event pairs, 1 based on Foata normal form. 12/98 useless extension candidates. Maximal degree in co-relation 369. Up to 44 conditions per place. [2021-03-11 20:29:57,950 INFO L132 encePairwiseOnDemand]: 113/121 looper letters, 11 selfloop transitions, 18 changer transitions 4/42 dead transitions. [2021-03-11 20:29:57,951 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 42 transitions, 392 flow [2021-03-11 20:29:57,951 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-03-11 20:29:57,951 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2021-03-11 20:29:57,952 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 375 transitions. [2021-03-11 20:29:57,952 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.7747933884297521 [2021-03-11 20:29:57,953 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 375 transitions. [2021-03-11 20:29:57,953 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 375 transitions. [2021-03-11 20:29:57,953 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 20:29:57,953 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 375 transitions. [2021-03-11 20:29:57,954 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 93.75) internal successors, (375), 4 states have internal predecessors, (375), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 20:29:57,955 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 121.0) internal successors, (605), 5 states have internal predecessors, (605), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 20:29:57,955 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 121.0) internal successors, (605), 5 states have internal predecessors, (605), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 20:29:57,956 INFO L185 Difference]: Start difference. First operand has 38 places, 32 transitions, 230 flow. Second operand 4 states and 375 transitions. [2021-03-11 20:29:57,956 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 42 transitions, 392 flow [2021-03-11 20:29:57,962 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 42 transitions, 392 flow, removed 0 selfloop flow, removed 0 redundant places. [2021-03-11 20:29:57,964 INFO L241 Difference]: Finished difference. Result has 44 places, 36 transitions, 352 flow [2021-03-11 20:29:57,964 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=121, PETRI_DIFFERENCE_MINUEND_FLOW=230, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=16, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=352, PETRI_PLACES=44, PETRI_TRANSITIONS=36} [2021-03-11 20:29:57,964 INFO L335 CegarLoopForPetriNet]: 27 programPoint places, 17 predicate places. [2021-03-11 20:29:57,964 INFO L480 AbstractCegarLoop]: Abstraction has has 44 places, 36 transitions, 352 flow [2021-03-11 20:29:57,965 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 90.25) internal successors, (361), 4 states have internal predecessors, (361), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 20:29:57,965 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 20:29:57,965 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 20:29:57,965 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-03-11 20:29:57,965 INFO L428 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-11 20:29:57,966 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 20:29:57,966 INFO L82 PathProgramCache]: Analyzing trace with hash 457713525, now seen corresponding path program 1 times [2021-03-11 20:29:57,966 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 20:29:57,967 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1777894829] [2021-03-11 20:29:57,967 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 20:29:57,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 20:29:58,028 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 20:29:58,029 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 20:29:58,031 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 20:29:58,032 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 20:29:58,033 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 20:29:58,033 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1777894829] [2021-03-11 20:29:58,034 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 20:29:58,034 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-03-11 20:29:58,034 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [918742928] [2021-03-11 20:29:58,034 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-03-11 20:29:58,035 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 20:29:58,037 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-03-11 20:29:58,038 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-11 20:29:58,039 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 95 out of 121 [2021-03-11 20:29:58,039 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 36 transitions, 352 flow. Second operand has 3 states, 3 states have (on average 95.66666666666667) internal successors, (287), 3 states have internal predecessors, (287), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 20:29:58,043 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 20:29:58,043 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 95 of 121 [2021-03-11 20:29:58,044 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 20:29:58,073 INFO L129 PetriNetUnfolder]: 48/133 cut-off events. [2021-03-11 20:29:58,074 INFO L130 PetriNetUnfolder]: For 385/468 co-relation queries the response was YES. [2021-03-11 20:29:58,074 INFO L84 FinitePrefix]: Finished finitePrefix Result has 481 conditions, 133 events. 48/133 cut-off events. For 385/468 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 564 event pairs, 11 based on Foata normal form. 3/129 useless extension candidates. Maximal degree in co-relation 468. Up to 75 conditions per place. [2021-03-11 20:29:58,075 INFO L132 encePairwiseOnDemand]: 116/121 looper letters, 4 selfloop transitions, 4 changer transitions 0/39 dead transitions. [2021-03-11 20:29:58,075 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 39 transitions, 374 flow [2021-03-11 20:29:58,076 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-11 20:29:58,076 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-03-11 20:29:58,076 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 294 transitions. [2021-03-11 20:29:58,077 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.8099173553719008 [2021-03-11 20:29:58,077 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 294 transitions. [2021-03-11 20:29:58,077 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 294 transitions. [2021-03-11 20:29:58,077 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 20:29:58,077 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 294 transitions. [2021-03-11 20:29:58,078 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 98.0) internal successors, (294), 3 states have internal predecessors, (294), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 20:29:58,079 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 121.0) internal successors, (484), 4 states have internal predecessors, (484), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 20:29:58,080 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 121.0) internal successors, (484), 4 states have internal predecessors, (484), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 20:29:58,080 INFO L185 Difference]: Start difference. First operand has 44 places, 36 transitions, 352 flow. Second operand 3 states and 294 transitions. [2021-03-11 20:29:58,080 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 39 transitions, 374 flow [2021-03-11 20:29:58,082 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 39 transitions, 374 flow, removed 0 selfloop flow, removed 0 redundant places. [2021-03-11 20:29:58,083 INFO L241 Difference]: Finished difference. Result has 47 places, 39 transitions, 378 flow [2021-03-11 20:29:58,084 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=121, PETRI_DIFFERENCE_MINUEND_FLOW=352, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=378, PETRI_PLACES=47, PETRI_TRANSITIONS=39} [2021-03-11 20:29:58,084 INFO L335 CegarLoopForPetriNet]: 27 programPoint places, 20 predicate places. [2021-03-11 20:29:58,084 INFO L480 AbstractCegarLoop]: Abstraction has has 47 places, 39 transitions, 378 flow [2021-03-11 20:29:58,084 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 95.66666666666667) internal successors, (287), 3 states have internal predecessors, (287), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 20:29:58,084 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 20:29:58,084 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 20:29:58,084 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-03-11 20:29:58,084 INFO L428 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-11 20:29:58,085 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 20:29:58,085 INFO L82 PathProgramCache]: Analyzing trace with hash -194772184, now seen corresponding path program 1 times [2021-03-11 20:29:58,085 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 20:29:58,086 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [793303489] [2021-03-11 20:29:58,086 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 20:29:58,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 20:29:58,135 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 20:29:58,135 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 20:29:58,143 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 20:29:58,143 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 20:29:58,151 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 20:29:58,151 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 20:29:58,152 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 20:29:58,152 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [793303489] [2021-03-11 20:29:58,152 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 20:29:58,152 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-11 20:29:58,152 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1580423508] [2021-03-11 20:29:58,152 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-03-11 20:29:58,152 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 20:29:58,153 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-03-11 20:29:58,153 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-03-11 20:29:58,154 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 95 out of 121 [2021-03-11 20:29:58,154 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 39 transitions, 378 flow. Second operand has 4 states, 4 states have (on average 95.75) internal successors, (383), 4 states have internal predecessors, (383), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 20:29:58,154 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 20:29:58,154 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 95 of 121 [2021-03-11 20:29:58,154 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 20:29:58,183 INFO L129 PetriNetUnfolder]: 29/92 cut-off events. [2021-03-11 20:29:58,184 INFO L130 PetriNetUnfolder]: For 306/408 co-relation queries the response was YES. [2021-03-11 20:29:58,184 INFO L84 FinitePrefix]: Finished finitePrefix Result has 422 conditions, 92 events. 29/92 cut-off events. For 306/408 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 313 event pairs, 1 based on Foata normal form. 25/116 useless extension candidates. Maximal degree in co-relation 407. Up to 43 conditions per place. [2021-03-11 20:29:58,185 INFO L132 encePairwiseOnDemand]: 116/121 looper letters, 3 selfloop transitions, 7 changer transitions 1/42 dead transitions. [2021-03-11 20:29:58,185 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 42 transitions, 412 flow [2021-03-11 20:29:58,185 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-03-11 20:29:58,185 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2021-03-11 20:29:58,186 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 392 transitions. [2021-03-11 20:29:58,186 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.8099173553719008 [2021-03-11 20:29:58,187 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 392 transitions. [2021-03-11 20:29:58,187 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 392 transitions. [2021-03-11 20:29:58,187 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 20:29:58,187 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 392 transitions. [2021-03-11 20:29:58,188 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 98.0) internal successors, (392), 4 states have internal predecessors, (392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 20:29:58,189 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 121.0) internal successors, (605), 5 states have internal predecessors, (605), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 20:29:58,189 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 121.0) internal successors, (605), 5 states have internal predecessors, (605), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 20:29:58,189 INFO L185 Difference]: Start difference. First operand has 47 places, 39 transitions, 378 flow. Second operand 4 states and 392 transitions. [2021-03-11 20:29:58,189 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 42 transitions, 412 flow [2021-03-11 20:29:58,191 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 42 transitions, 408 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-03-11 20:29:58,192 INFO L241 Difference]: Finished difference. Result has 50 places, 41 transitions, 408 flow [2021-03-11 20:29:58,192 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=121, PETRI_DIFFERENCE_MINUEND_FLOW=374, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=408, PETRI_PLACES=50, PETRI_TRANSITIONS=41} [2021-03-11 20:29:58,193 INFO L335 CegarLoopForPetriNet]: 27 programPoint places, 23 predicate places. [2021-03-11 20:29:58,193 INFO L480 AbstractCegarLoop]: Abstraction has has 50 places, 41 transitions, 408 flow [2021-03-11 20:29:58,193 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 95.75) internal successors, (383), 4 states have internal predecessors, (383), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 20:29:58,193 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 20:29:58,193 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 20:29:58,193 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-03-11 20:29:58,193 INFO L428 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-11 20:29:58,194 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 20:29:58,194 INFO L82 PathProgramCache]: Analyzing trace with hash -641982188, now seen corresponding path program 1 times [2021-03-11 20:29:58,194 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 20:29:58,194 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2073200267] [2021-03-11 20:29:58,194 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 20:29:58,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 20:29:58,240 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 20:29:58,241 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 20:29:58,244 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 20:29:58,244 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 20:29:58,248 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 20:29:58,248 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 20:29:58,252 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 20:29:58,253 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 20:29:58,253 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 20:29:58,253 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2073200267] [2021-03-11 20:29:58,253 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 20:29:58,254 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-03-11 20:29:58,254 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [838785690] [2021-03-11 20:29:58,255 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-03-11 20:29:58,255 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 20:29:58,255 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-03-11 20:29:58,255 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-03-11 20:29:58,256 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 95 out of 121 [2021-03-11 20:29:58,256 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 41 transitions, 408 flow. Second operand has 5 states, 5 states have (on average 95.8) internal successors, (479), 5 states have internal predecessors, (479), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 20:29:58,257 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 20:29:58,257 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 95 of 121 [2021-03-11 20:29:58,257 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 20:29:58,286 INFO L129 PetriNetUnfolder]: 24/75 cut-off events. [2021-03-11 20:29:58,286 INFO L130 PetriNetUnfolder]: For 329/454 co-relation queries the response was YES. [2021-03-11 20:29:58,286 INFO L84 FinitePrefix]: Finished finitePrefix Result has 390 conditions, 75 events. 24/75 cut-off events. For 329/454 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 237 event pairs, 0 based on Foata normal form. 30/104 useless extension candidates. Maximal degree in co-relation 374. Up to 30 conditions per place. [2021-03-11 20:29:58,287 INFO L132 encePairwiseOnDemand]: 116/121 looper letters, 0 selfloop transitions, 0 changer transitions 40/40 dead transitions. [2021-03-11 20:29:58,287 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 40 transitions, 418 flow [2021-03-11 20:29:58,287 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-03-11 20:29:58,287 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-03-11 20:29:58,288 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 486 transitions. [2021-03-11 20:29:58,288 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.8033057851239669 [2021-03-11 20:29:58,288 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 486 transitions. [2021-03-11 20:29:58,290 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 486 transitions. [2021-03-11 20:29:58,290 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 20:29:58,291 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 486 transitions. [2021-03-11 20:29:58,292 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 97.2) internal successors, (486), 5 states have internal predecessors, (486), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 20:29:58,293 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 121.0) internal successors, (726), 6 states have internal predecessors, (726), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 20:29:58,294 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 121.0) internal successors, (726), 6 states have internal predecessors, (726), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 20:29:58,294 INFO L185 Difference]: Start difference. First operand has 50 places, 41 transitions, 408 flow. Second operand 5 states and 486 transitions. [2021-03-11 20:29:58,294 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 40 transitions, 418 flow [2021-03-11 20:29:58,296 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 40 transitions, 394 flow, removed 3 selfloop flow, removed 4 redundant places. [2021-03-11 20:29:58,297 INFO L241 Difference]: Finished difference. Result has 49 places, 0 transitions, 0 flow [2021-03-11 20:29:58,297 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=121, PETRI_DIFFERENCE_MINUEND_FLOW=374, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=0, PETRI_PLACES=49, PETRI_TRANSITIONS=0} [2021-03-11 20:29:58,297 INFO L335 CegarLoopForPetriNet]: 27 programPoint places, 22 predicate places. [2021-03-11 20:29:58,297 INFO L480 AbstractCegarLoop]: Abstraction has has 49 places, 0 transitions, 0 flow [2021-03-11 20:29:58,298 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 95.8) internal successors, (479), 5 states have internal predecessors, (479), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 20:29:58,298 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-03-11 20:29:58,301 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 11.03 08:29:58 BasicIcfg [2021-03-11 20:29:58,301 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-03-11 20:29:58,302 INFO L168 Benchmark]: Toolchain (without parser) took 4723.72 ms. Allocated memory was 255.9 MB in the beginning and 440.4 MB in the end (delta: 184.5 MB). Free memory was 234.7 MB in the beginning and 285.2 MB in the end (delta: -50.5 MB). Peak memory consumption was 133.5 MB. Max. memory is 16.0 GB. [2021-03-11 20:29:58,302 INFO L168 Benchmark]: CDTParser took 0.12 ms. Allocated memory is still 255.9 MB. Free memory is still 237.7 MB. There was no memory consumed. Max. memory is 16.0 GB. [2021-03-11 20:29:58,304 INFO L168 Benchmark]: CACSL2BoogieTranslator took 552.32 ms. Allocated memory was 255.9 MB in the beginning and 367.0 MB in the end (delta: 111.1 MB). Free memory was 233.9 MB in the beginning and 328.9 MB in the end (delta: -95.0 MB). Peak memory consumption was 16.8 MB. Max. memory is 16.0 GB. [2021-03-11 20:29:58,305 INFO L168 Benchmark]: Boogie Procedure Inliner took 41.46 ms. Allocated memory is still 367.0 MB. Free memory was 328.9 MB in the beginning and 327.3 MB in the end (delta: 1.6 MB). There was no memory consumed. Max. memory is 16.0 GB. [2021-03-11 20:29:58,305 INFO L168 Benchmark]: Boogie Preprocessor took 24.26 ms. Allocated memory is still 367.0 MB. Free memory was 326.8 MB in the beginning and 325.8 MB in the end (delta: 952.5 kB). There was no memory consumed. Max. memory is 16.0 GB. [2021-03-11 20:29:58,307 INFO L168 Benchmark]: RCFGBuilder took 431.19 ms. Allocated memory is still 367.0 MB. Free memory was 325.8 MB in the beginning and 303.7 MB in the end (delta: 22.1 MB). Peak memory consumption was 23.1 MB. Max. memory is 16.0 GB. [2021-03-11 20:29:58,308 INFO L168 Benchmark]: TraceAbstraction took 3663.03 ms. Allocated memory was 367.0 MB in the beginning and 440.4 MB in the end (delta: 73.4 MB). Free memory was 303.2 MB in the beginning and 285.2 MB in the end (delta: 18.1 MB). Peak memory consumption was 93.5 MB. Max. memory is 16.0 GB. [2021-03-11 20:29:58,312 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.12 ms. Allocated memory is still 255.9 MB. Free memory is still 237.7 MB. There was no memory consumed. Max. memory is 16.0 GB. * CACSL2BoogieTranslator took 552.32 ms. Allocated memory was 255.9 MB in the beginning and 367.0 MB in the end (delta: 111.1 MB). Free memory was 233.9 MB in the beginning and 328.9 MB in the end (delta: -95.0 MB). Peak memory consumption was 16.8 MB. Max. memory is 16.0 GB. * Boogie Procedure Inliner took 41.46 ms. Allocated memory is still 367.0 MB. Free memory was 328.9 MB in the beginning and 327.3 MB in the end (delta: 1.6 MB). There was no memory consumed. Max. memory is 16.0 GB. * Boogie Preprocessor took 24.26 ms. Allocated memory is still 367.0 MB. Free memory was 326.8 MB in the beginning and 325.8 MB in the end (delta: 952.5 kB). There was no memory consumed. Max. memory is 16.0 GB. * RCFGBuilder took 431.19 ms. Allocated memory is still 367.0 MB. Free memory was 325.8 MB in the beginning and 303.7 MB in the end (delta: 22.1 MB). Peak memory consumption was 23.1 MB. Max. memory is 16.0 GB. * TraceAbstraction took 3663.03 ms. Allocated memory was 367.0 MB in the beginning and 440.4 MB in the end (delta: 73.4 MB). Free memory was 303.2 MB in the beginning and 285.2 MB in the end (delta: 18.1 MB). Peak memory consumption was 93.5 MB. Max. memory is 16.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 2320.1ms, 68 PlacesBefore, 27 PlacesAfterwards, 59 TransitionsBefore, 18 TransitionsAfterwards, 864 CoEnabledTransitionPairs, 5 FixpointIterations, 17 TrivialSequentialCompositions, 25 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 5 ConcurrentYvCompositions, 0 ChoiceCompositions, 47 TotalNumberOfCompositions, 1617 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 903, positive: 828, positive conditional: 0, positive unconditional: 828, negative: 75, negative conditional: 0, negative unconditional: 75, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 621, positive: 589, positive conditional: 0, positive unconditional: 589, negative: 32, negative conditional: 0, negative unconditional: 32, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 621, positive: 577, positive conditional: 0, positive unconditional: 577, negative: 44, negative conditional: 0, negative unconditional: 44, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 44, positive: 12, positive conditional: 0, positive unconditional: 12, negative: 32, negative conditional: 0, negative unconditional: 32, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 207, positive: 58, positive conditional: 0, positive unconditional: 58, negative: 149, negative conditional: 0, negative unconditional: 149, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 903, positive: 239, positive conditional: 0, positive unconditional: 239, negative: 43, negative conditional: 0, negative unconditional: 43, unknown: 621, unknown conditional: 0, unknown unconditional: 621] , Statistics on independence cache: Total cache size (in pairs): 56, Positive cache size: 44, Positive conditional cache size: 0, Positive unconditional cache size: 44, Negative cache size: 12, Negative conditional cache size: 0, Negative unconditional cache size: 12 - PositiveResult [Line: 18]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 73 locations, 1 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 3.4ms, RemoveRedundantFlowTime: 0.0ms, RemoveRedundantFlowUnfoldingTime: 0.0ms, BackfoldingTime: 0.0ms, BackfoldingUnfoldingTime: 0.0ms, FlowIncreaseByBackfolding: 0, BasicCegarLoop: VerificationResult: SAFE, OverallTime: 3559.1ms, OverallIterations: 8, TraceHistogramMax: 1, EmptinessCheckTime: 0.0ms, AutomataDifference: 418.8ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 2441.9ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 43 SDtfs, 11 SDslu, 12 SDs, 0 SdLazy, 66 SolverSat, 32 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 89.1ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 18 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 61.6ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=408occurred in iteration=7, InterpolantAutomatonStates: 29, 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: 20.2ms SsaConstructionTime, 165.3ms SatisfiabilityAnalysisTime, 357.2ms InterpolantComputationTime, 86 NumberOfCodeBlocks, 86 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 78 ConstructedInterpolants, 0 QuantifiedInterpolants, 346 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 8 InterpolantComputations, 8 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 RESULT: Ultimate proved your program to be correct! Received shutdown request...