/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/concurrent/pthreads/regression/ThreadIdTest1.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-d5b4239aa45c8d22a30959944f2ef622f7386a6d-d5b4239 [2021-03-24 22:08:56,284 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-03-24 22:08:56,287 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-03-24 22:08:56,324 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-03-24 22:08:56,325 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-03-24 22:08:56,328 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-03-24 22:08:56,330 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-03-24 22:08:56,335 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-03-24 22:08:56,338 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-03-24 22:08:56,342 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-03-24 22:08:56,343 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-03-24 22:08:56,344 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-03-24 22:08:56,344 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-03-24 22:08:56,346 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-03-24 22:08:56,348 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-03-24 22:08:56,349 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-03-24 22:08:56,351 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-03-24 22:08:56,352 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-03-24 22:08:56,354 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-03-24 22:08:56,362 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-03-24 22:08:56,363 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-03-24 22:08:56,364 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-03-24 22:08:56,366 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-03-24 22:08:56,367 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-03-24 22:08:56,373 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-03-24 22:08:56,377 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-03-24 22:08:56,378 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-03-24 22:08:56,379 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-03-24 22:08:56,380 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-03-24 22:08:56,381 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-03-24 22:08:56,381 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-03-24 22:08:56,382 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-03-24 22:08:56,382 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-03-24 22:08:56,382 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-03-24 22:08:56,383 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-03-24 22:08:56,501 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-03-24 22:08:56,502 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 [2021-03-24 22:08:56,540 INFO L113 SettingsManager]: Loading preferences was successful [2021-03-24 22:08:56,540 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-03-24 22:08:56,543 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-03-24 22:08:56,544 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-03-24 22:08:56,544 INFO L138 SettingsManager]: * Use SBE=true [2021-03-24 22:08:56,544 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-03-24 22:08:56,544 INFO L138 SettingsManager]: * sizeof long=4 [2021-03-24 22:08:56,544 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-03-24 22:08:56,544 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-03-24 22:08:56,545 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-03-24 22:08:56,545 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-03-24 22:08:56,546 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-03-24 22:08:56,546 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-03-24 22:08:56,546 INFO L138 SettingsManager]: * sizeof long double=12 [2021-03-24 22:08:56,546 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-03-24 22:08:56,546 INFO L138 SettingsManager]: * Use constant arrays=true [2021-03-24 22:08:56,546 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-03-24 22:08:56,546 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-03-24 22:08:56,546 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-03-24 22:08:56,547 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-03-24 22:08:56,547 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-03-24 22:08:56,547 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-03-24 22:08:56,547 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-03-24 22:08:56,547 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-03-24 22:08:56,547 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-03-24 22:08:56,548 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-03-24 22:08:56,548 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-03-24 22:08:56,548 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-03-24 22:08:56,548 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-03-24 22:08:56,903 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-03-24 22:08:56,927 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-03-24 22:08:56,930 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-03-24 22:08:56,931 INFO L271 PluginConnector]: Initializing CDTParser... [2021-03-24 22:08:56,932 INFO L275 PluginConnector]: CDTParser initialized [2021-03-24 22:08:56,933 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/pthreads/regression/ThreadIdTest1.c [2021-03-24 22:08:57,000 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4af68f660/b620a3c550ad4f90964f9040da5e1176/FLAGafbe5137a [2021-03-24 22:08:57,466 INFO L306 CDTParser]: Found 1 translation units. [2021-03-24 22:08:57,466 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/concurrent/pthreads/regression/ThreadIdTest1.c [2021-03-24 22:08:57,466 WARN L117 ultiparseSymbolTable]: System include pthread.h could not be resolved by CDT -- only built-in system includes are available. [2021-03-24 22:08:57,466 WARN L117 ultiparseSymbolTable]: System include stdio.h could not be resolved by CDT -- only built-in system includes are available. [2021-03-24 22:08:57,496 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4af68f660/b620a3c550ad4f90964f9040da5e1176/FLAGafbe5137a [2021-03-24 22:08:57,890 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4af68f660/b620a3c550ad4f90964f9040da5e1176 [2021-03-24 22:08:57,893 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-03-24 22:08:57,894 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-03-24 22:08:57,895 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-03-24 22:08:57,895 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-03-24 22:08:57,898 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-03-24 22:08:57,899 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.03 10:08:57" (1/1) ... [2021-03-24 22:08:57,900 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6d252b9b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.03 10:08:57, skipping insertion in model container [2021-03-24 22:08:57,900 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.03 10:08:57" (1/1) ... [2021-03-24 22:08:57,905 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-03-24 22:08:57,915 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-03-24 22:08:58,006 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-03-24 22:08:58,013 INFO L203 MainTranslator]: Completed pre-run [2021-03-24 22:08:58,023 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-03-24 22:08:58,033 INFO L208 MainTranslator]: Completed translation [2021-03-24 22:08:58,033 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.03 10:08:58 WrapperNode [2021-03-24 22:08:58,033 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-03-24 22:08:58,034 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-03-24 22:08:58,034 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-03-24 22:08:58,034 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-03-24 22:08:58,073 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.03 10:08:58" (1/1) ... [2021-03-24 22:08:58,080 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.03 10:08:58" (1/1) ... [2021-03-24 22:08:58,094 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-03-24 22:08:58,097 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-03-24 22:08:58,097 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-03-24 22:08:58,098 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-03-24 22:08:58,104 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.03 10:08:58" (1/1) ... [2021-03-24 22:08:58,104 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.03 10:08:58" (1/1) ... [2021-03-24 22:08:58,106 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.03 10:08:58" (1/1) ... [2021-03-24 22:08:58,106 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.03 10:08:58" (1/1) ... [2021-03-24 22:08:58,116 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.03 10:08:58" (1/1) ... [2021-03-24 22:08:58,117 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.03 10:08:58" (1/1) ... [2021-03-24 22:08:58,122 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.03 10:08:58" (1/1) ... [2021-03-24 22:08:58,124 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-03-24 22:08:58,126 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-03-24 22:08:58,126 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-03-24 22:08:58,126 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-03-24 22:08:58,127 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.03 10:08:58" (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 [2021-03-24 22:08:58,187 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-03-24 22:08:58,187 INFO L130 BoogieDeclarations]: Found specification of procedure dec [2021-03-24 22:08:58,187 INFO L138 BoogieDeclarations]: Found implementation of procedure dec [2021-03-24 22:08:58,187 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-03-24 22:08:58,187 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-03-24 22:08:58,188 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-03-24 22:08:58,188 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-03-24 22:08:58,188 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-03-24 22:08:58,188 INFO L130 BoogieDeclarations]: Found specification of procedure inc [2021-03-24 22:08:58,188 INFO L138 BoogieDeclarations]: Found implementation of procedure inc [2021-03-24 22:08:58,189 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-03-24 22:08:58,492 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-03-24 22:08:58,493 INFO L299 CfgBuilder]: Removed 4 assume(true) statements. [2021-03-24 22:08:58,494 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.03 10:08:58 BoogieIcfgContainer [2021-03-24 22:08:58,494 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-03-24 22:08:58,495 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-03-24 22:08:58,495 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-03-24 22:08:58,498 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-03-24 22:08:58,498 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.03 10:08:57" (1/3) ... [2021-03-24 22:08:58,499 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@49494f72 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.03 10:08:58, skipping insertion in model container [2021-03-24 22:08:58,499 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.03 10:08:58" (2/3) ... [2021-03-24 22:08:58,499 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@49494f72 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.03 10:08:58, skipping insertion in model container [2021-03-24 22:08:58,499 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.03 10:08:58" (3/3) ... [2021-03-24 22:08:58,501 INFO L111 eAbstractionObserver]: Analyzing ICFG ThreadIdTest1.c [2021-03-24 22:08:58,506 INFO L149 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-03-24 22:08:58,510 INFO L161 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-03-24 22:08:58,511 INFO L323 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-03-24 22:08:58,547 WARN L313 ript$VariableManager]: TermVariabe |decThread1of1ForFork1_#in~n.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 22:08:58,548 WARN L313 ript$VariableManager]: TermVariabe |decThread1of1ForFork1_#in~n.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 22:08:58,548 WARN L313 ript$VariableManager]: TermVariabe decThread1of1ForFork1_~n.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 22:08:58,548 WARN L313 ript$VariableManager]: TermVariabe decThread1of1ForFork1_~n.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 22:08:58,548 WARN L313 ript$VariableManager]: TermVariabe |decThread1of1ForFork1_#in~n.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 22:08:58,548 WARN L313 ript$VariableManager]: TermVariabe |decThread1of1ForFork1_#in~n.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 22:08:58,549 WARN L313 ript$VariableManager]: TermVariabe decThread1of1ForFork1_~n.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 22:08:58,549 WARN L313 ript$VariableManager]: TermVariabe decThread1of1ForFork1_~n.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 22:08:58,549 WARN L313 ript$VariableManager]: TermVariabe |decThread1of1ForFork1_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 22:08:58,550 WARN L313 ript$VariableManager]: TermVariabe |decThread1of1ForFork1_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 22:08:58,550 WARN L313 ript$VariableManager]: TermVariabe |decThread1of1ForFork1_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 22:08:58,550 WARN L313 ript$VariableManager]: TermVariabe |decThread1of1ForFork1_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 22:08:58,551 WARN L313 ript$VariableManager]: TermVariabe |decThread1of1ForFork1_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 22:08:58,551 WARN L313 ript$VariableManager]: TermVariabe |decThread1of1ForFork1_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 22:08:58,551 WARN L313 ript$VariableManager]: TermVariabe |decThread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 22:08:58,551 WARN L313 ript$VariableManager]: TermVariabe |decThread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 22:08:58,551 WARN L313 ript$VariableManager]: TermVariabe |decThread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 22:08:58,551 WARN L313 ript$VariableManager]: TermVariabe |decThread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 22:08:58,553 WARN L313 ript$VariableManager]: TermVariabe |incThread1of1ForFork0_#in~n.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 22:08:58,553 WARN L313 ript$VariableManager]: TermVariabe |incThread1of1ForFork0_#in~n.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 22:08:58,554 WARN L313 ript$VariableManager]: TermVariabe incThread1of1ForFork0_~n.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 22:08:58,554 WARN L313 ript$VariableManager]: TermVariabe incThread1of1ForFork0_~n.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 22:08:58,554 WARN L313 ript$VariableManager]: TermVariabe |incThread1of1ForFork0_#in~n.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 22:08:58,555 WARN L313 ript$VariableManager]: TermVariabe |incThread1of1ForFork0_#in~n.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 22:08:58,555 WARN L313 ript$VariableManager]: TermVariabe incThread1of1ForFork0_~n.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 22:08:58,555 WARN L313 ript$VariableManager]: TermVariabe incThread1of1ForFork0_~n.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 22:08:58,555 WARN L313 ript$VariableManager]: TermVariabe |incThread1of1ForFork0_#t~post0| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 22:08:58,555 WARN L313 ript$VariableManager]: TermVariabe |incThread1of1ForFork0_#t~post0| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 22:08:58,556 WARN L313 ript$VariableManager]: TermVariabe |incThread1of1ForFork0_#t~post0| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 22:08:58,556 WARN L313 ript$VariableManager]: TermVariabe |incThread1of1ForFork0_#t~post0| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 22:08:58,556 WARN L313 ript$VariableManager]: TermVariabe |incThread1of1ForFork0_#t~post0| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 22:08:58,556 WARN L313 ript$VariableManager]: TermVariabe |incThread1of1ForFork0_#t~post0| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 22:08:58,557 WARN L313 ript$VariableManager]: TermVariabe |incThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 22:08:58,557 WARN L313 ript$VariableManager]: TermVariabe |incThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 22:08:58,558 WARN L313 ript$VariableManager]: TermVariabe |incThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 22:08:58,558 WARN L313 ript$VariableManager]: TermVariabe |incThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 22:08:58,561 WARN L313 ript$VariableManager]: TermVariabe |incThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 22:08:58,561 WARN L313 ript$VariableManager]: TermVariabe |incThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 22:08:58,561 WARN L313 ript$VariableManager]: TermVariabe |incThread1of1ForFork0_#t~post0| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 22:08:58,562 WARN L313 ript$VariableManager]: TermVariabe incThread1of1ForFork0_~n.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 22:08:58,562 WARN L313 ript$VariableManager]: TermVariabe incThread1of1ForFork0_~n.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 22:08:58,573 WARN L313 ript$VariableManager]: TermVariabe |decThread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 22:08:58,573 WARN L313 ript$VariableManager]: TermVariabe decThread1of1ForFork1_~n.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 22:08:58,573 WARN L313 ript$VariableManager]: TermVariabe |decThread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 22:08:58,573 WARN L313 ript$VariableManager]: TermVariabe |decThread1of1ForFork1_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 22:08:58,574 WARN L313 ript$VariableManager]: TermVariabe decThread1of1ForFork1_~n.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 22:08:58,584 INFO L149 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2021-03-24 22:08:58,601 INFO L253 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2021-03-24 22:08:58,634 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-03-24 22:08:58,634 INFO L377 AbstractCegarLoop]: Hoare is false [2021-03-24 22:08:58,634 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-03-24 22:08:58,634 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-03-24 22:08:58,634 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-03-24 22:08:58,634 INFO L381 AbstractCegarLoop]: Difference is false [2021-03-24 22:08:58,634 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-03-24 22:08:58,635 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-03-24 22:08:58,645 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 48 places, 42 transitions, 100 flow [2021-03-24 22:08:58,688 INFO L129 PetriNetUnfolder]: 0/51 cut-off events. [2021-03-24 22:08:58,689 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2021-03-24 22:08:58,695 INFO L84 FinitePrefix]: Finished finitePrefix Result has 60 conditions, 51 events. 0/51 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 51 event pairs, 0 based on Foata normal form. 0/49 useless extension candidates. Maximal degree in co-relation 0. Up to 2 conditions per place. [2021-03-24 22:08:58,695 INFO L82 GeneralOperation]: Start removeDead. Operand has 48 places, 42 transitions, 100 flow [2021-03-24 22:08:58,704 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 38 places, 32 transitions, 76 flow [2021-03-24 22:08:58,706 INFO L165 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-03-24 22:08:58,722 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 38 places, 32 transitions, 76 flow [2021-03-24 22:08:58,725 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 38 places, 32 transitions, 76 flow [2021-03-24 22:08:58,726 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 38 places, 32 transitions, 76 flow [2021-03-24 22:08:58,745 INFO L129 PetriNetUnfolder]: 0/35 cut-off events. [2021-03-24 22:08:58,746 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2021-03-24 22:08:58,746 INFO L84 FinitePrefix]: Finished finitePrefix Result has 44 conditions, 35 events. 0/35 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 29 event pairs, 0 based on Foata normal form. 0/35 useless extension candidates. Maximal degree in co-relation 0. Up to 2 conditions per place. [2021-03-24 22:08:58,749 INFO L142 LiptonReduction]: Number of co-enabled transitions 252 [2021-03-24 22:08:59,415 INFO L154 LiptonReduction]: Checked pairs total: 244 [2021-03-24 22:08:59,415 INFO L156 LiptonReduction]: Total number of compositions: 17 [2021-03-24 22:08:59,417 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 712 [2021-03-24 22:08:59,425 INFO L129 PetriNetUnfolder]: 0/14 cut-off events. [2021-03-24 22:08:59,426 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2021-03-24 22:08:59,426 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 22:08:59,427 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 22:08:59,427 INFO L428 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-24 22:08:59,431 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 22:08:59,431 INFO L82 PathProgramCache]: Analyzing trace with hash -71435164, now seen corresponding path program 1 times [2021-03-24 22:08:59,438 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 22:08:59,439 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1113007023] [2021-03-24 22:08:59,440 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 22:08:59,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 22:08:59,554 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 22:08:59,555 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 22:08:59,556 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 22:08:59,556 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 22:08:59,562 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 22:08:59,563 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1113007023] [2021-03-24 22:08:59,563 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 22:08:59,564 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-03-24 22:08:59,564 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [750142575] [2021-03-24 22:08:59,570 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-03-24 22:08:59,571 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 22:08:59,580 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-03-24 22:08:59,582 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-24 22:08:59,584 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 39 out of 59 [2021-03-24 22:08:59,585 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 21 places, 15 transitions, 42 flow. Second operand has 3 states, 3 states have (on average 41.0) internal successors, (123), 3 states have internal predecessors, (123), 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) [2021-03-24 22:08:59,585 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 22:08:59,585 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 39 of 59 [2021-03-24 22:08:59,586 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 22:08:59,623 INFO L129 PetriNetUnfolder]: 6/38 cut-off events. [2021-03-24 22:08:59,623 INFO L130 PetriNetUnfolder]: For 5/5 co-relation queries the response was YES. [2021-03-24 22:08:59,624 INFO L84 FinitePrefix]: Finished finitePrefix Result has 77 conditions, 38 events. 6/38 cut-off events. For 5/5 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 95 event pairs, 4 based on Foata normal form. 6/42 useless extension candidates. Maximal degree in co-relation 50. Up to 19 conditions per place. [2021-03-24 22:08:59,625 INFO L132 encePairwiseOnDemand]: 55/59 looper letters, 9 selfloop transitions, 3 changer transitions 0/19 dead transitions. [2021-03-24 22:08:59,625 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 23 places, 19 transitions, 74 flow [2021-03-24 22:08:59,626 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-24 22:08:59,628 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-03-24 22:08:59,633 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 130 transitions. [2021-03-24 22:08:59,635 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.7344632768361582 [2021-03-24 22:08:59,636 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 130 transitions. [2021-03-24 22:08:59,636 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 130 transitions. [2021-03-24 22:08:59,637 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 22:08:59,639 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 130 transitions. [2021-03-24 22:08:59,641 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 43.333333333333336) internal successors, (130), 3 states have internal predecessors, (130), 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) [2021-03-24 22:08:59,644 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 59.0) internal successors, (236), 4 states have internal predecessors, (236), 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) [2021-03-24 22:08:59,644 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 59.0) internal successors, (236), 4 states have internal predecessors, (236), 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) [2021-03-24 22:08:59,646 INFO L185 Difference]: Start difference. First operand has 21 places, 15 transitions, 42 flow. Second operand 3 states and 130 transitions. [2021-03-24 22:08:59,647 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 23 places, 19 transitions, 74 flow [2021-03-24 22:08:59,649 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 19 places, 19 transitions, 66 flow, removed 0 selfloop flow, removed 4 redundant places. [2021-03-24 22:08:59,650 INFO L241 Difference]: Finished difference. Result has 20 places, 17 transitions, 53 flow [2021-03-24 22:08:59,652 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=59, PETRI_DIFFERENCE_MINUEND_FLOW=34, PETRI_DIFFERENCE_MINUEND_PLACES=17, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=15, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=12, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=53, PETRI_PLACES=20, PETRI_TRANSITIONS=17} [2021-03-24 22:08:59,652 INFO L343 CegarLoopForPetriNet]: 21 programPoint places, -1 predicate places. [2021-03-24 22:08:59,652 INFO L480 AbstractCegarLoop]: Abstraction has has 20 places, 17 transitions, 53 flow [2021-03-24 22:08:59,653 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 41.0) internal successors, (123), 3 states have internal predecessors, (123), 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) [2021-03-24 22:08:59,653 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 22:08:59,653 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 22:08:59,653 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-03-24 22:08:59,653 INFO L428 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-24 22:08:59,654 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 22:08:59,654 INFO L82 PathProgramCache]: Analyzing trace with hash 684196891, now seen corresponding path program 1 times [2021-03-24 22:08:59,654 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 22:08:59,654 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1719398790] [2021-03-24 22:08:59,654 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 22:08:59,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 22:08:59,729 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 22:08:59,730 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 22:08:59,736 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 22:08:59,736 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 22:08:59,742 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 22:08:59,743 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 22:08:59,749 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 22:08:59,750 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-24 22:08:59,758 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 22:08:59,758 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-24 22:08:59,766 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 22:08:59,767 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-24 22:08:59,774 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 22:08:59,774 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1719398790] [2021-03-24 22:08:59,775 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 22:08:59,775 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-03-24 22:08:59,775 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [65130586] [2021-03-24 22:08:59,776 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-24 22:08:59,776 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 22:08:59,776 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-24 22:08:59,777 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-03-24 22:08:59,778 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 34 out of 59 [2021-03-24 22:08:59,778 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 20 places, 17 transitions, 53 flow. Second operand has 8 states, 8 states have (on average 35.25) internal successors, (282), 8 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) [2021-03-24 22:08:59,778 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 22:08:59,778 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 34 of 59 [2021-03-24 22:08:59,779 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 22:08:59,866 INFO L129 PetriNetUnfolder]: 9/48 cut-off events. [2021-03-24 22:08:59,866 INFO L130 PetriNetUnfolder]: For 23/26 co-relation queries the response was YES. [2021-03-24 22:08:59,867 INFO L84 FinitePrefix]: Finished finitePrefix Result has 118 conditions, 48 events. 9/48 cut-off events. For 23/26 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 132 event pairs, 2 based on Foata normal form. 1/47 useless extension candidates. Maximal degree in co-relation 69. Up to 25 conditions per place. [2021-03-24 22:08:59,867 INFO L132 encePairwiseOnDemand]: 52/59 looper letters, 11 selfloop transitions, 7 changer transitions 6/29 dead transitions. [2021-03-24 22:08:59,867 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 27 places, 29 transitions, 144 flow [2021-03-24 22:08:59,868 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-24 22:08:59,868 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-03-24 22:08:59,869 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 295 transitions. [2021-03-24 22:08:59,870 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.625 [2021-03-24 22:08:59,870 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 295 transitions. [2021-03-24 22:08:59,871 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 295 transitions. [2021-03-24 22:08:59,871 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 22:08:59,871 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 295 transitions. [2021-03-24 22:08:59,873 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 36.875) internal successors, (295), 8 states have internal predecessors, (295), 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) [2021-03-24 22:08:59,874 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 59.0) internal successors, (531), 9 states have internal predecessors, (531), 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) [2021-03-24 22:08:59,875 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 59.0) internal successors, (531), 9 states have internal predecessors, (531), 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) [2021-03-24 22:08:59,875 INFO L185 Difference]: Start difference. First operand has 20 places, 17 transitions, 53 flow. Second operand 8 states and 295 transitions. [2021-03-24 22:08:59,875 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 27 places, 29 transitions, 144 flow [2021-03-24 22:08:59,876 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 26 places, 29 transitions, 139 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-03-24 22:08:59,877 INFO L241 Difference]: Finished difference. Result has 31 places, 21 transitions, 93 flow [2021-03-24 22:08:59,877 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=59, PETRI_DIFFERENCE_MINUEND_FLOW=50, PETRI_DIFFERENCE_MINUEND_PLACES=19, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=17, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=12, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=93, PETRI_PLACES=31, PETRI_TRANSITIONS=21} [2021-03-24 22:08:59,877 INFO L343 CegarLoopForPetriNet]: 21 programPoint places, 10 predicate places. [2021-03-24 22:08:59,878 INFO L480 AbstractCegarLoop]: Abstraction has has 31 places, 21 transitions, 93 flow [2021-03-24 22:08:59,878 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 35.25) internal successors, (282), 8 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) [2021-03-24 22:08:59,878 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 22:08:59,878 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 22:08:59,878 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-03-24 22:08:59,878 INFO L428 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-24 22:08:59,879 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 22:08:59,879 INFO L82 PathProgramCache]: Analyzing trace with hash -1026416417, now seen corresponding path program 2 times [2021-03-24 22:08:59,879 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 22:08:59,879 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [618031319] [2021-03-24 22:08:59,879 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 22:08:59,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 22:08:59,907 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 22:08:59,908 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 22:08:59,911 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 22:08:59,912 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 22:08:59,918 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 22:08:59,919 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 22:08:59,925 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 22:08:59,926 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-24 22:08:59,937 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 22:08:59,938 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-24 22:08:59,947 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 22:08:59,947 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-24 22:08:59,955 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 22:08:59,955 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [618031319] [2021-03-24 22:08:59,955 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 22:08:59,955 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-03-24 22:08:59,956 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [699345003] [2021-03-24 22:08:59,956 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-24 22:08:59,956 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 22:08:59,956 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-24 22:08:59,957 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-03-24 22:08:59,958 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 34 out of 59 [2021-03-24 22:08:59,958 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 31 places, 21 transitions, 93 flow. Second operand has 8 states, 8 states have (on average 35.25) internal successors, (282), 8 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) [2021-03-24 22:08:59,958 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 22:08:59,958 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 34 of 59 [2021-03-24 22:08:59,958 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 22:09:00,056 INFO L129 PetriNetUnfolder]: 6/40 cut-off events. [2021-03-24 22:09:00,057 INFO L130 PetriNetUnfolder]: For 28/28 co-relation queries the response was YES. [2021-03-24 22:09:00,057 INFO L84 FinitePrefix]: Finished finitePrefix Result has 133 conditions, 40 events. 6/40 cut-off events. For 28/28 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 94 event pairs, 2 based on Foata normal form. 1/39 useless extension candidates. Maximal degree in co-relation 116. Up to 19 conditions per place. [2021-03-24 22:09:00,057 INFO L132 encePairwiseOnDemand]: 52/59 looper letters, 12 selfloop transitions, 8 changer transitions 3/28 dead transitions. [2021-03-24 22:09:00,058 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 35 places, 28 transitions, 174 flow [2021-03-24 22:09:00,058 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-24 22:09:00,058 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-03-24 22:09:00,059 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 294 transitions. [2021-03-24 22:09:00,060 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.6228813559322034 [2021-03-24 22:09:00,060 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 294 transitions. [2021-03-24 22:09:00,060 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 294 transitions. [2021-03-24 22:09:00,060 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 22:09:00,060 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 294 transitions. [2021-03-24 22:09:00,061 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 36.75) internal successors, (294), 8 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) [2021-03-24 22:09:00,063 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 59.0) internal successors, (531), 9 states have internal predecessors, (531), 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) [2021-03-24 22:09:00,063 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 59.0) internal successors, (531), 9 states have internal predecessors, (531), 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) [2021-03-24 22:09:00,063 INFO L185 Difference]: Start difference. First operand has 31 places, 21 transitions, 93 flow. Second operand 8 states and 294 transitions. [2021-03-24 22:09:00,063 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 35 places, 28 transitions, 174 flow [2021-03-24 22:09:00,064 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 31 places, 28 transitions, 148 flow, removed 10 selfloop flow, removed 4 redundant places. [2021-03-24 22:09:00,065 INFO L241 Difference]: Finished difference. Result has 36 places, 23 transitions, 119 flow [2021-03-24 22:09:00,065 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=59, PETRI_DIFFERENCE_MINUEND_FLOW=74, PETRI_DIFFERENCE_MINUEND_PLACES=24, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=21, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=13, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=119, PETRI_PLACES=36, PETRI_TRANSITIONS=23} [2021-03-24 22:09:00,066 INFO L343 CegarLoopForPetriNet]: 21 programPoint places, 15 predicate places. [2021-03-24 22:09:00,066 INFO L480 AbstractCegarLoop]: Abstraction has has 36 places, 23 transitions, 119 flow [2021-03-24 22:09:00,066 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 35.25) internal successors, (282), 8 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) [2021-03-24 22:09:00,066 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 22:09:00,066 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 22:09:00,066 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-03-24 22:09:00,066 INFO L428 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-24 22:09:00,067 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 22:09:00,067 INFO L82 PathProgramCache]: Analyzing trace with hash 70323223, now seen corresponding path program 3 times [2021-03-24 22:09:00,067 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 22:09:00,067 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1577965747] [2021-03-24 22:09:00,067 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 22:09:00,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 22:09:00,087 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 22:09:00,088 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 22:09:00,088 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 22:09:00,089 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 22:09:00,091 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 22:09:00,092 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 22:09:00,095 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 22:09:00,096 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-24 22:09:00,100 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 22:09:00,100 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1577965747] [2021-03-24 22:09:00,101 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 22:09:00,101 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-03-24 22:09:00,101 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [529952529] [2021-03-24 22:09:00,101 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-03-24 22:09:00,101 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 22:09:00,102 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-03-24 22:09:00,102 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-03-24 22:09:00,102 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 36 out of 59 [2021-03-24 22:09:00,103 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 36 places, 23 transitions, 119 flow. Second operand has 5 states, 5 states have (on average 37.8) internal successors, (189), 5 states have internal predecessors, (189), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:09:00,103 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 22:09:00,103 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 36 of 59 [2021-03-24 22:09:00,103 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 22:09:00,141 INFO L129 PetriNetUnfolder]: 3/32 cut-off events. [2021-03-24 22:09:00,141 INFO L130 PetriNetUnfolder]: For 37/41 co-relation queries the response was YES. [2021-03-24 22:09:00,142 INFO L84 FinitePrefix]: Finished finitePrefix Result has 118 conditions, 32 events. 3/32 cut-off events. For 37/41 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 67 event pairs, 0 based on Foata normal form. 1/31 useless extension candidates. Maximal degree in co-relation 99. Up to 18 conditions per place. [2021-03-24 22:09:00,142 INFO L132 encePairwiseOnDemand]: 54/59 looper letters, 15 selfloop transitions, 3 changer transitions 2/26 dead transitions. [2021-03-24 22:09:00,142 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 37 places, 26 transitions, 175 flow [2021-03-24 22:09:00,143 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-03-24 22:09:00,143 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-03-24 22:09:00,143 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 195 transitions. [2021-03-24 22:09:00,143 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.6610169491525424 [2021-03-24 22:09:00,144 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 195 transitions. [2021-03-24 22:09:00,144 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 195 transitions. [2021-03-24 22:09:00,144 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 22:09:00,144 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 195 transitions. [2021-03-24 22:09:00,144 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 39.0) internal successors, (195), 5 states have internal predecessors, (195), 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) [2021-03-24 22:09:00,145 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 59.0) internal successors, (354), 6 states have internal predecessors, (354), 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) [2021-03-24 22:09:00,145 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 59.0) internal successors, (354), 6 states have internal predecessors, (354), 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) [2021-03-24 22:09:00,146 INFO L185 Difference]: Start difference. First operand has 36 places, 23 transitions, 119 flow. Second operand 5 states and 195 transitions. [2021-03-24 22:09:00,146 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 37 places, 26 transitions, 175 flow [2021-03-24 22:09:00,147 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 33 places, 26 transitions, 162 flow, removed 4 selfloop flow, removed 4 redundant places. [2021-03-24 22:09:00,148 INFO L241 Difference]: Finished difference. Result has 35 places, 23 transitions, 121 flow [2021-03-24 22:09:00,148 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=59, PETRI_DIFFERENCE_MINUEND_FLOW=108, PETRI_DIFFERENCE_MINUEND_PLACES=29, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=23, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=121, PETRI_PLACES=35, PETRI_TRANSITIONS=23} [2021-03-24 22:09:00,148 INFO L343 CegarLoopForPetriNet]: 21 programPoint places, 14 predicate places. [2021-03-24 22:09:00,148 INFO L480 AbstractCegarLoop]: Abstraction has has 35 places, 23 transitions, 121 flow [2021-03-24 22:09:00,148 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 37.8) internal successors, (189), 5 states have internal predecessors, (189), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:09:00,148 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 22:09:00,149 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 22:09:00,149 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-03-24 22:09:00,149 INFO L428 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-24 22:09:00,149 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 22:09:00,149 INFO L82 PathProgramCache]: Analyzing trace with hash -176461577, now seen corresponding path program 4 times [2021-03-24 22:09:00,149 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 22:09:00,150 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [390737345] [2021-03-24 22:09:00,150 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 22:09:00,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 22:09:00,169 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 22:09:00,170 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 22:09:00,170 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 22:09:00,170 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 22:09:00,176 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 22:09:00,177 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 22:09:00,181 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 22:09:00,182 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-24 22:09:00,187 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 22:09:00,188 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [390737345] [2021-03-24 22:09:00,188 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 22:09:00,188 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-03-24 22:09:00,188 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [197044935] [2021-03-24 22:09:00,188 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-03-24 22:09:00,189 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 22:09:00,189 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-03-24 22:09:00,189 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-03-24 22:09:00,190 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 36 out of 59 [2021-03-24 22:09:00,190 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 23 transitions, 121 flow. Second operand has 5 states, 5 states have (on average 37.8) internal successors, (189), 5 states have internal predecessors, (189), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:09:00,190 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 22:09:00,190 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 36 of 59 [2021-03-24 22:09:00,190 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 22:09:00,236 INFO L129 PetriNetUnfolder]: 3/28 cut-off events. [2021-03-24 22:09:00,236 INFO L130 PetriNetUnfolder]: For 45/51 co-relation queries the response was YES. [2021-03-24 22:09:00,237 INFO L84 FinitePrefix]: Finished finitePrefix Result has 104 conditions, 28 events. 3/28 cut-off events. For 45/51 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 52 event pairs, 1 based on Foata normal form. 3/30 useless extension candidates. Maximal degree in co-relation 90. Up to 16 conditions per place. [2021-03-24 22:09:00,237 INFO L132 encePairwiseOnDemand]: 55/59 looper letters, 9 selfloop transitions, 5 changer transitions 5/24 dead transitions. [2021-03-24 22:09:00,237 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 37 places, 24 transitions, 164 flow [2021-03-24 22:09:00,238 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-03-24 22:09:00,238 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-03-24 22:09:00,238 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 193 transitions. [2021-03-24 22:09:00,239 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.6542372881355932 [2021-03-24 22:09:00,239 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 193 transitions. [2021-03-24 22:09:00,239 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 193 transitions. [2021-03-24 22:09:00,239 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 22:09:00,239 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 193 transitions. [2021-03-24 22:09:00,240 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 38.6) internal successors, (193), 5 states have internal predecessors, (193), 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) [2021-03-24 22:09:00,240 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 59.0) internal successors, (354), 6 states have internal predecessors, (354), 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) [2021-03-24 22:09:00,240 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 59.0) internal successors, (354), 6 states have internal predecessors, (354), 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) [2021-03-24 22:09:00,240 INFO L185 Difference]: Start difference. First operand has 35 places, 23 transitions, 121 flow. Second operand 5 states and 193 transitions. [2021-03-24 22:09:00,241 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 37 places, 24 transitions, 164 flow [2021-03-24 22:09:00,244 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 34 places, 24 transitions, 154 flow, removed 1 selfloop flow, removed 3 redundant places. [2021-03-24 22:09:00,245 INFO L241 Difference]: Finished difference. Result has 36 places, 19 transitions, 110 flow [2021-03-24 22:09:00,245 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=59, PETRI_DIFFERENCE_MINUEND_FLOW=113, PETRI_DIFFERENCE_MINUEND_PLACES=30, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=23, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=18, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=110, PETRI_PLACES=36, PETRI_TRANSITIONS=19} [2021-03-24 22:09:00,246 INFO L343 CegarLoopForPetriNet]: 21 programPoint places, 15 predicate places. [2021-03-24 22:09:00,246 INFO L480 AbstractCegarLoop]: Abstraction has has 36 places, 19 transitions, 110 flow [2021-03-24 22:09:00,246 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 37.8) internal successors, (189), 5 states have internal predecessors, (189), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:09:00,246 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 22:09:00,246 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 22:09:00,246 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-03-24 22:09:00,248 INFO L428 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-24 22:09:00,248 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 22:09:00,248 INFO L82 PathProgramCache]: Analyzing trace with hash -1405296867, now seen corresponding path program 1 times [2021-03-24 22:09:00,248 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 22:09:00,250 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1078994536] [2021-03-24 22:09:00,250 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 22:09:00,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-03-24 22:09:00,278 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-03-24 22:09:00,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-03-24 22:09:00,286 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-03-24 22:09:00,311 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-03-24 22:09:00,311 INFO L634 BasicCegarLoop]: Counterexample might be feasible [2021-03-24 22:09:00,311 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-03-24 22:09:00,348 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.03 10:09:00 BasicIcfg [2021-03-24 22:09:00,348 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-03-24 22:09:00,350 INFO L168 Benchmark]: Toolchain (without parser) took 2454.87 ms. Allocated memory was 255.9 MB in the beginning and 362.8 MB in the end (delta: 107.0 MB). Free memory was 233.6 MB in the beginning and 305.9 MB in the end (delta: -72.3 MB). Peak memory consumption was 33.1 MB. Max. memory is 16.0 GB. [2021-03-24 22:09:00,350 INFO L168 Benchmark]: CDTParser took 0.12 ms. Allocated memory is still 255.9 MB. Free memory is still 237.8 MB. There was no memory consumed. Max. memory is 16.0 GB. [2021-03-24 22:09:00,351 INFO L168 Benchmark]: CACSL2BoogieTranslator took 138.40 ms. Allocated memory is still 255.9 MB. Free memory was 233.6 MB in the beginning and 224.7 MB in the end (delta: 8.9 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.0 GB. [2021-03-24 22:09:00,352 INFO L168 Benchmark]: Boogie Procedure Inliner took 61.03 ms. Allocated memory was 255.9 MB in the beginning and 362.8 MB in the end (delta: 107.0 MB). Free memory was 224.7 MB in the beginning and 347.1 MB in the end (delta: -122.4 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.0 GB. [2021-03-24 22:09:00,353 INFO L168 Benchmark]: Boogie Preprocessor took 27.39 ms. Allocated memory is still 362.8 MB. Free memory was 347.1 MB in the beginning and 345.9 MB in the end (delta: 1.2 MB). There was no memory consumed. Max. memory is 16.0 GB. [2021-03-24 22:09:00,356 INFO L168 Benchmark]: RCFGBuilder took 367.95 ms. Allocated memory is still 362.8 MB. Free memory was 345.9 MB in the beginning and 332.3 MB in the end (delta: 13.6 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.0 GB. [2021-03-24 22:09:00,357 INFO L168 Benchmark]: TraceAbstraction took 1852.98 ms. Allocated memory is still 362.8 MB. Free memory was 331.9 MB in the beginning and 305.9 MB in the end (delta: 25.9 MB). Peak memory consumption was 28.0 MB. Max. memory is 16.0 GB. [2021-03-24 22:09:00,362 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 237.8 MB. There was no memory consumed. Max. memory is 16.0 GB. * CACSL2BoogieTranslator took 138.40 ms. Allocated memory is still 255.9 MB. Free memory was 233.6 MB in the beginning and 224.7 MB in the end (delta: 8.9 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.0 GB. * Boogie Procedure Inliner took 61.03 ms. Allocated memory was 255.9 MB in the beginning and 362.8 MB in the end (delta: 107.0 MB). Free memory was 224.7 MB in the beginning and 347.1 MB in the end (delta: -122.4 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.0 GB. * Boogie Preprocessor took 27.39 ms. Allocated memory is still 362.8 MB. Free memory was 347.1 MB in the beginning and 345.9 MB in the end (delta: 1.2 MB). There was no memory consumed. Max. memory is 16.0 GB. * RCFGBuilder took 367.95 ms. Allocated memory is still 362.8 MB. Free memory was 345.9 MB in the beginning and 332.3 MB in the end (delta: 13.6 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.0 GB. * TraceAbstraction took 1852.98 ms. Allocated memory is still 362.8 MB. Free memory was 331.9 MB in the beginning and 305.9 MB in the end (delta: 25.9 MB). Peak memory consumption was 28.0 MB. Max. memory is 16.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 690.7ms, 38 PlacesBefore, 21 PlacesAfterwards, 32 TransitionsBefore, 15 TransitionsAfterwards, 252 CoEnabledTransitionPairs, 4 FixpointIterations, 7 TrivialSequentialCompositions, 10 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 17 TotalNumberOfCompositions, 244 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 154, positive: 137, positive conditional: 0, positive unconditional: 137, negative: 17, negative conditional: 0, negative unconditional: 17, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 133, positive: 120, positive conditional: 0, positive unconditional: 120, negative: 13, negative conditional: 0, negative unconditional: 13, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 133, positive: 120, positive conditional: 0, positive unconditional: 120, negative: 13, negative conditional: 0, negative unconditional: 13, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 133, positive: 120, positive conditional: 0, positive unconditional: 120, negative: 13, negative conditional: 0, negative unconditional: 13, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 13, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 13, negative conditional: 0, negative unconditional: 13, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 57, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 57, negative conditional: 0, negative unconditional: 57, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 154, positive: 17, positive conditional: 0, positive unconditional: 17, negative: 4, negative conditional: 0, negative unconditional: 4, unknown: 133, unknown conditional: 0, unknown unconditional: 133] , Statistics on independence cache: Total cache size (in pairs): 9, Positive cache size: 5, Positive conditional cache size: 0, Positive unconditional cache size: 5, Negative cache size: 4, Negative conditional cache size: 0, Negative unconditional cache size: 4 - CounterExampleResult [Line: 36]: assertion can be violated assertion can be violated We found a FailurePath: [L13] 0 int x = 0; VAL [x=0] [L27] 0 pthread_t first_th_id; [L28] 0 pthread_t second_th_id; [L30] FCALL, FORK 0 pthread_create(&first_th_id, NULL, inc, NULL) VAL [n={0:0}, x=0] [L31] FCALL, FORK 0 pthread_create(&second_th_id, NULL, dec, NULL) VAL [n={0:0}, n={0:0}, x=0] [L33] 0 \read(first_th_id) VAL [n={0:0}, n={0:0}, x=0] [L17] 1 x++ [L18] 1 return NULL; VAL [\result={0:0}, n={0:0}, n={0:0}, n={0:0}, x=1] [L33] FCALL, JOIN 1 pthread_join(first_th_id, NULL) VAL [\result={0:0}, n={0:0}, n={0:0}, n={0:0}, x=1] [L34] 0 int y = x; VAL [\result={0:0}, n={0:0}, n={0:0}, n={0:0}, x=1] [L22] 2 x-- [L23] 2 return NULL; [L36] 0 CodeAnnotStmt[Assertion] VAL [\result={0:0}, \result={0:0}, n={0:0}, n={0:0}, n={0:0}, n={0:0}, x=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 42 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: UNSAFE, OverallTime: 1683.1ms, OverallIterations: 6, TraceHistogramMax: 1, EmptinessCheckTime: 0.0ms, AutomataDifference: 386.9ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 787.4ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 45 SDtfs, 15 SDslu, 41 SDs, 0 SdLazy, 217 SolverSat, 1 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 158.1ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 28 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 137.1ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=121occurred in iteration=4, 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: 12.9ms SsaConstructionTime, 71.1ms SatisfiabilityAnalysisTime, 253.2ms InterpolantComputationTime, 77 NumberOfCodeBlocks, 77 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 58 ConstructedInterpolants, 0 QuantifiedInterpolants, 196 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 5 InterpolantComputations, 5 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...