/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/pthread/stateful01-2.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-60655ea [2020-09-14 12:51:08,933 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-14 12:51:08,939 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-14 12:51:08,985 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-14 12:51:08,985 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-14 12:51:08,996 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-14 12:51:08,998 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-14 12:51:09,001 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-14 12:51:09,005 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-14 12:51:09,009 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-14 12:51:09,010 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-14 12:51:09,012 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-14 12:51:09,012 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-14 12:51:09,016 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-14 12:51:09,019 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-14 12:51:09,020 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-14 12:51:09,022 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-14 12:51:09,024 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-14 12:51:09,025 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-14 12:51:09,027 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-14 12:51:09,028 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-14 12:51:09,030 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-14 12:51:09,031 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-14 12:51:09,032 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-14 12:51:09,034 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-14 12:51:09,034 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-14 12:51:09,034 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-14 12:51:09,035 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-14 12:51:09,036 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-14 12:51:09,037 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-14 12:51:09,037 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-14 12:51:09,038 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-14 12:51:09,039 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-14 12:51:09,039 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-14 12:51:09,040 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-14 12:51:09,041 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-14 12:51:09,041 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-14 12:51:09,042 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-14 12:51:09,042 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-14 12:51:09,043 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-14 12:51:09,044 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-14 12:51:09,045 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-09-14 12:51:09,070 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-14 12:51:09,070 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-14 12:51:09,072 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-14 12:51:09,072 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-14 12:51:09,072 INFO L138 SettingsManager]: * Use SBE=true [2020-09-14 12:51:09,072 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-14 12:51:09,073 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-14 12:51:09,073 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-14 12:51:09,073 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-14 12:51:09,073 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-14 12:51:09,073 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-14 12:51:09,074 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-14 12:51:09,074 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-14 12:51:09,074 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-14 12:51:09,074 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-14 12:51:09,074 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-14 12:51:09,075 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-14 12:51:09,075 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-14 12:51:09,075 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-14 12:51:09,075 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-14 12:51:09,075 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-14 12:51:09,076 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-14 12:51:09,076 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-14 12:51:09,076 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-14 12:51:09,076 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-14 12:51:09,076 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-14 12:51:09,077 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-14 12:51:09,077 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-14 12:51:09,077 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-14 12:51:09,077 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-09-14 12:51:09,546 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-14 12:51:09,570 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-14 12:51:09,575 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-14 12:51:09,577 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-14 12:51:09,577 INFO L275 PluginConnector]: CDTParser initialized [2020-09-14 12:51:09,578 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread/stateful01-2.i [2020-09-14 12:51:09,673 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/bfe32a8f3/ba8beedc9a0e4168bb1e133681930ef9/FLAG5864d1bd1 [2020-09-14 12:51:10,351 INFO L306 CDTParser]: Found 1 translation units. [2020-09-14 12:51:10,352 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/pthread/stateful01-2.i [2020-09-14 12:51:10,377 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/bfe32a8f3/ba8beedc9a0e4168bb1e133681930ef9/FLAG5864d1bd1 [2020-09-14 12:51:10,575 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/bfe32a8f3/ba8beedc9a0e4168bb1e133681930ef9 [2020-09-14 12:51:10,592 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-14 12:51:10,598 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-09-14 12:51:10,599 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-14 12:51:10,600 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-14 12:51:10,605 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-14 12:51:10,606 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.09 12:51:10" (1/1) ... [2020-09-14 12:51:10,611 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4ca3833b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 12:51:10, skipping insertion in model container [2020-09-14 12:51:10,611 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.09 12:51:10" (1/1) ... [2020-09-14 12:51:10,621 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-14 12:51:10,670 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-14 12:51:11,183 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-14 12:51:11,204 INFO L203 MainTranslator]: Completed pre-run [2020-09-14 12:51:11,250 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-14 12:51:11,333 INFO L208 MainTranslator]: Completed translation [2020-09-14 12:51:11,334 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 12:51:11 WrapperNode [2020-09-14 12:51:11,334 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-14 12:51:11,335 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-09-14 12:51:11,336 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-09-14 12:51:11,336 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-09-14 12:51:11,348 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 12:51:11" (1/1) ... [2020-09-14 12:51:11,367 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 12:51:11" (1/1) ... [2020-09-14 12:51:11,397 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-09-14 12:51:11,398 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-14 12:51:11,398 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-14 12:51:11,398 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-14 12:51:11,410 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 12:51:11" (1/1) ... [2020-09-14 12:51:11,411 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 12:51:11" (1/1) ... [2020-09-14 12:51:11,414 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 12:51:11" (1/1) ... [2020-09-14 12:51:11,415 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 12:51:11" (1/1) ... [2020-09-14 12:51:11,421 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 12:51:11" (1/1) ... [2020-09-14 12:51:11,424 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 12:51:11" (1/1) ... [2020-09-14 12:51:11,427 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 12:51:11" (1/1) ... [2020-09-14 12:51:11,430 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-14 12:51:11,431 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-14 12:51:11,431 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-14 12:51:11,431 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-14 12:51:11,432 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 12:51:11" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/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 [2020-09-14 12:51:11,518 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-09-14 12:51:11,518 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2020-09-14 12:51:11,518 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2020-09-14 12:51:11,519 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2020-09-14 12:51:11,519 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2020-09-14 12:51:11,519 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-14 12:51:11,519 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2020-09-14 12:51:11,519 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-09-14 12:51:11,520 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-14 12:51:11,520 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-09-14 12:51:11,520 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-14 12:51:11,520 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-14 12:51:11,523 WARN L205 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-09-14 12:51:11,966 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-14 12:51:11,966 INFO L295 CfgBuilder]: Removed 4 assume(true) statements. [2020-09-14 12:51:11,971 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.09 12:51:11 BoogieIcfgContainer [2020-09-14 12:51:11,972 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-14 12:51:11,973 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-14 12:51:11,973 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-14 12:51:11,978 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-14 12:51:11,978 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.09 12:51:10" (1/3) ... [2020-09-14 12:51:11,979 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@19805422 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.09 12:51:11, skipping insertion in model container [2020-09-14 12:51:11,979 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 12:51:11" (2/3) ... [2020-09-14 12:51:11,980 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@19805422 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.09 12:51:11, skipping insertion in model container [2020-09-14 12:51:11,980 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.09 12:51:11" (3/3) ... [2020-09-14 12:51:11,982 INFO L109 eAbstractionObserver]: Analyzing ICFG stateful01-2.i [2020-09-14 12:51:11,997 WARN L146 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-09-14 12:51:11,998 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-09-14 12:51:12,009 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-14 12:51:12,011 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-09-14 12:51:12,043 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 12:51:12,044 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 12:51:12,044 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 12:51:12,044 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 12:51:12,044 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~nondet2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 12:51:12,045 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~nondet2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 12:51:12,045 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 12:51:12,045 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 12:51:12,046 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 12:51:12,046 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~nondet4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 12:51:12,046 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~nondet4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 12:51:12,047 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 12:51:12,047 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 12:51:12,047 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 12:51:12,048 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 12:51:12,048 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 12:51:12,048 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 12:51:12,049 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 12:51:12,049 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 12:51:12,049 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 12:51:12,050 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~nondet6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 12:51:12,050 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~nondet6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 12:51:12,050 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~nondet7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 12:51:12,051 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~nondet7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 12:51:12,051 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 12:51:12,051 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 12:51:12,061 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~nondet4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 12:51:12,061 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~nondet2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 12:51:12,062 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 12:51:12,062 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 12:51:12,062 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 12:51:12,062 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 12:51:12,063 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 12:51:12,063 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 12:51:12,070 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 12:51:12,070 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 12:51:12,070 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 12:51:12,071 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 12:51:12,071 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~nondet7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 12:51:12,071 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~nondet6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 12:51:12,104 INFO L251 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2020-09-14 12:51:12,131 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-14 12:51:12,131 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-14 12:51:12,132 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-09-14 12:51:12,132 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-14 12:51:12,132 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-14 12:51:12,132 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-14 12:51:12,132 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-14 12:51:12,133 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-14 12:51:12,150 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 82 places, 78 transitions, 178 flow [2020-09-14 12:51:12,153 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 82 places, 78 transitions, 178 flow [2020-09-14 12:51:12,211 INFO L129 PetriNetUnfolder]: 2/78 cut-off events. [2020-09-14 12:51:12,211 INFO L130 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2020-09-14 12:51:12,217 INFO L80 FinitePrefix]: Finished finitePrefix Result has 89 conditions, 78 events. 2/78 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 48 event pairs, 0 based on Foata normal form. 0/76 useless extension candidates. Maximal degree in co-relation 27. Up to 3 conditions per place. [2020-09-14 12:51:12,222 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 82 places, 78 transitions, 178 flow [2020-09-14 12:51:12,251 INFO L129 PetriNetUnfolder]: 2/78 cut-off events. [2020-09-14 12:51:12,251 INFO L130 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2020-09-14 12:51:12,252 INFO L80 FinitePrefix]: Finished finitePrefix Result has 89 conditions, 78 events. 2/78 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 48 event pairs, 0 based on Foata normal form. 0/76 useless extension candidates. Maximal degree in co-relation 27. Up to 3 conditions per place. [2020-09-14 12:51:12,254 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 680 [2020-09-14 12:51:12,258 INFO L170 etLargeBlockEncoding]: Semantic Check. [2020-09-14 12:51:13,955 WARN L193 SmtUtils]: Spent 152.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 66 [2020-09-14 12:51:14,455 WARN L193 SmtUtils]: Spent 410.00 ms on a formula simplification. DAG size of input: 111 DAG size of output: 107 [2020-09-14 12:51:14,641 WARN L193 SmtUtils]: Spent 181.00 ms on a formula simplification that was a NOOP. DAG size: 103 [2020-09-14 12:51:14,663 INFO L206 etLargeBlockEncoding]: Checked pairs total: 1930 [2020-09-14 12:51:14,663 INFO L214 etLargeBlockEncoding]: Total number of compositions: 52 [2020-09-14 12:51:14,669 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 35 places, 30 transitions, 82 flow [2020-09-14 12:51:14,693 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 198 states. [2020-09-14 12:51:14,696 INFO L276 IsEmpty]: Start isEmpty. Operand 198 states. [2020-09-14 12:51:14,708 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-09-14 12:51:14,708 INFO L414 BasicCegarLoop]: Found error trace [2020-09-14 12:51:14,709 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-14 12:51:14,710 INFO L427 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-14 12:51:14,717 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-14 12:51:14,717 INFO L82 PathProgramCache]: Analyzing trace with hash 535203952, now seen corresponding path program 1 times [2020-09-14 12:51:14,730 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-14 12:51:14,731 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1660429111] [2020-09-14 12:51:14,731 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-14 12:51:14,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-14 12:51:15,050 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-14 12:51:15,051 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1660429111] [2020-09-14 12:51:15,052 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-14 12:51:15,052 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-14 12:51:15,053 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [249547706] [2020-09-14 12:51:15,060 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-14 12:51:15,061 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-14 12:51:15,080 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-14 12:51:15,081 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-14 12:51:15,084 INFO L87 Difference]: Start difference. First operand 198 states. Second operand 3 states. [2020-09-14 12:51:15,149 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-14 12:51:15,150 INFO L93 Difference]: Finished difference Result 150 states and 254 transitions. [2020-09-14 12:51:15,150 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-14 12:51:15,152 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 25 [2020-09-14 12:51:15,153 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-14 12:51:15,167 INFO L225 Difference]: With dead ends: 150 [2020-09-14 12:51:15,167 INFO L226 Difference]: Without dead ends: 149 [2020-09-14 12:51:15,169 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-14 12:51:15,194 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 149 states. [2020-09-14 12:51:15,224 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 149 to 149. [2020-09-14 12:51:15,226 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 149 states. [2020-09-14 12:51:15,229 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 149 states to 149 states and 253 transitions. [2020-09-14 12:51:15,230 INFO L78 Accepts]: Start accepts. Automaton has 149 states and 253 transitions. Word has length 25 [2020-09-14 12:51:15,231 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-14 12:51:15,231 INFO L479 AbstractCegarLoop]: Abstraction has 149 states and 253 transitions. [2020-09-14 12:51:15,231 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-14 12:51:15,231 INFO L276 IsEmpty]: Start isEmpty. Operand 149 states and 253 transitions. [2020-09-14 12:51:15,233 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-09-14 12:51:15,234 INFO L414 BasicCegarLoop]: Found error trace [2020-09-14 12:51:15,234 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-14 12:51:15,234 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-14 12:51:15,235 INFO L427 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-14 12:51:15,235 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-14 12:51:15,235 INFO L82 PathProgramCache]: Analyzing trace with hash 1346228208, now seen corresponding path program 2 times [2020-09-14 12:51:15,235 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-14 12:51:15,236 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1460254812] [2020-09-14 12:51:15,236 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-14 12:51:15,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-14 12:51:15,428 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-14 12:51:15,428 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1460254812] [2020-09-14 12:51:15,429 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-14 12:51:15,429 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-14 12:51:15,429 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1487133772] [2020-09-14 12:51:15,431 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-14 12:51:15,431 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-14 12:51:15,432 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-14 12:51:15,432 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-14 12:51:15,432 INFO L87 Difference]: Start difference. First operand 149 states and 253 transitions. Second operand 5 states. [2020-09-14 12:51:15,494 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-14 12:51:15,494 INFO L93 Difference]: Finished difference Result 149 states and 252 transitions. [2020-09-14 12:51:15,495 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-14 12:51:15,495 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 25 [2020-09-14 12:51:15,495 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-14 12:51:15,497 INFO L225 Difference]: With dead ends: 149 [2020-09-14 12:51:15,497 INFO L226 Difference]: Without dead ends: 122 [2020-09-14 12:51:15,498 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-09-14 12:51:15,499 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122 states. [2020-09-14 12:51:15,507 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122 to 122. [2020-09-14 12:51:15,508 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 122 states. [2020-09-14 12:51:15,509 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 122 states to 122 states and 201 transitions. [2020-09-14 12:51:15,509 INFO L78 Accepts]: Start accepts. Automaton has 122 states and 201 transitions. Word has length 25 [2020-09-14 12:51:15,509 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-14 12:51:15,510 INFO L479 AbstractCegarLoop]: Abstraction has 122 states and 201 transitions. [2020-09-14 12:51:15,510 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-14 12:51:15,510 INFO L276 IsEmpty]: Start isEmpty. Operand 122 states and 201 transitions. [2020-09-14 12:51:15,511 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-09-14 12:51:15,512 INFO L414 BasicCegarLoop]: Found error trace [2020-09-14 12:51:15,512 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-14 12:51:15,512 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-14 12:51:15,512 INFO L427 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-14 12:51:15,513 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-14 12:51:15,513 INFO L82 PathProgramCache]: Analyzing trace with hash 352163958, now seen corresponding path program 1 times [2020-09-14 12:51:15,513 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-14 12:51:15,513 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [571399023] [2020-09-14 12:51:15,514 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-14 12:51:15,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-14 12:51:15,748 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-14 12:51:15,749 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [571399023] [2020-09-14 12:51:15,749 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-14 12:51:15,749 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-14 12:51:15,750 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [660790868] [2020-09-14 12:51:15,750 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-14 12:51:15,750 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-14 12:51:15,751 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-14 12:51:15,751 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-09-14 12:51:15,751 INFO L87 Difference]: Start difference. First operand 122 states and 201 transitions. Second operand 6 states. [2020-09-14 12:51:15,803 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-14 12:51:15,803 INFO L93 Difference]: Finished difference Result 164 states and 266 transitions. [2020-09-14 12:51:15,804 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-14 12:51:15,804 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 25 [2020-09-14 12:51:15,805 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-14 12:51:15,806 INFO L225 Difference]: With dead ends: 164 [2020-09-14 12:51:15,806 INFO L226 Difference]: Without dead ends: 98 [2020-09-14 12:51:15,806 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-09-14 12:51:15,807 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2020-09-14 12:51:15,813 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 98. [2020-09-14 12:51:15,813 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 98 states. [2020-09-14 12:51:15,814 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 161 transitions. [2020-09-14 12:51:15,815 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 161 transitions. Word has length 25 [2020-09-14 12:51:15,815 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-14 12:51:15,815 INFO L479 AbstractCegarLoop]: Abstraction has 98 states and 161 transitions. [2020-09-14 12:51:15,815 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-14 12:51:15,816 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 161 transitions. [2020-09-14 12:51:15,817 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-09-14 12:51:15,817 INFO L414 BasicCegarLoop]: Found error trace [2020-09-14 12:51:15,817 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-14 12:51:15,818 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-14 12:51:15,818 INFO L427 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-14 12:51:15,818 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-14 12:51:15,818 INFO L82 PathProgramCache]: Analyzing trace with hash 1213192784, now seen corresponding path program 2 times [2020-09-14 12:51:15,819 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-14 12:51:15,819 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [544959990] [2020-09-14 12:51:15,819 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-14 12:51:15,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-14 12:51:15,983 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-14 12:51:15,984 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [544959990] [2020-09-14 12:51:15,984 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-14 12:51:15,984 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-14 12:51:15,985 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1959285775] [2020-09-14 12:51:15,985 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-14 12:51:15,985 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-14 12:51:15,986 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-14 12:51:15,986 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-09-14 12:51:15,986 INFO L87 Difference]: Start difference. First operand 98 states and 161 transitions. Second operand 6 states. [2020-09-14 12:51:16,027 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-14 12:51:16,027 INFO L93 Difference]: Finished difference Result 97 states and 160 transitions. [2020-09-14 12:51:16,029 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-14 12:51:16,029 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 25 [2020-09-14 12:51:16,029 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-14 12:51:16,030 INFO L225 Difference]: With dead ends: 97 [2020-09-14 12:51:16,030 INFO L226 Difference]: Without dead ends: 0 [2020-09-14 12:51:16,030 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-09-14 12:51:16,030 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-09-14 12:51:16,031 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-09-14 12:51:16,031 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-09-14 12:51:16,031 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-09-14 12:51:16,031 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 25 [2020-09-14 12:51:16,031 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-14 12:51:16,031 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-09-14 12:51:16,032 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-14 12:51:16,032 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-09-14 12:51:16,032 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-09-14 12:51:16,032 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-14 12:51:16,037 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 14.09 12:51:16 BasicIcfg [2020-09-14 12:51:16,037 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-14 12:51:16,047 INFO L168 Benchmark]: Toolchain (without parser) took 5446.12 ms. Allocated memory was 143.1 MB in the beginning and 249.0 MB in the end (delta: 105.9 MB). Free memory was 101.8 MB in the beginning and 140.1 MB in the end (delta: -38.4 MB). Peak memory consumption was 67.5 MB. Max. memory is 7.1 GB. [2020-09-14 12:51:16,047 INFO L168 Benchmark]: CDTParser took 1.58 ms. Allocated memory is still 143.1 MB. Free memory was 121.3 MB in the beginning and 121.1 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-09-14 12:51:16,049 INFO L168 Benchmark]: CACSL2BoogieTranslator took 735.44 ms. Allocated memory was 143.1 MB in the beginning and 203.4 MB in the end (delta: 60.3 MB). Free memory was 101.1 MB in the beginning and 162.5 MB in the end (delta: -61.4 MB). Peak memory consumption was 21.4 MB. Max. memory is 7.1 GB. [2020-09-14 12:51:16,051 INFO L168 Benchmark]: Boogie Procedure Inliner took 62.19 ms. Allocated memory is still 203.4 MB. Free memory was 162.5 MB in the beginning and 159.9 MB in the end (delta: 2.6 MB). Peak memory consumption was 2.6 MB. Max. memory is 7.1 GB. [2020-09-14 12:51:16,053 INFO L168 Benchmark]: Boogie Preprocessor took 32.72 ms. Allocated memory is still 203.4 MB. Free memory was 159.9 MB in the beginning and 158.5 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 7.1 GB. [2020-09-14 12:51:16,055 INFO L168 Benchmark]: RCFGBuilder took 540.95 ms. Allocated memory is still 203.4 MB. Free memory was 158.5 MB in the beginning and 134.6 MB in the end (delta: 23.9 MB). Peak memory consumption was 23.9 MB. Max. memory is 7.1 GB. [2020-09-14 12:51:16,058 INFO L168 Benchmark]: TraceAbstraction took 4064.07 ms. Allocated memory was 203.4 MB in the beginning and 249.0 MB in the end (delta: 45.6 MB). Free memory was 134.0 MB in the beginning and 140.1 MB in the end (delta: -6.1 MB). Peak memory consumption was 39.5 MB. Max. memory is 7.1 GB. [2020-09-14 12:51:16,066 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 1.58 ms. Allocated memory is still 143.1 MB. Free memory was 121.3 MB in the beginning and 121.1 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 735.44 ms. Allocated memory was 143.1 MB in the beginning and 203.4 MB in the end (delta: 60.3 MB). Free memory was 101.1 MB in the beginning and 162.5 MB in the end (delta: -61.4 MB). Peak memory consumption was 21.4 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 62.19 ms. Allocated memory is still 203.4 MB. Free memory was 162.5 MB in the beginning and 159.9 MB in the end (delta: 2.6 MB). Peak memory consumption was 2.6 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 32.72 ms. Allocated memory is still 203.4 MB. Free memory was 159.9 MB in the beginning and 158.5 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 540.95 ms. Allocated memory is still 203.4 MB. Free memory was 158.5 MB in the beginning and 134.6 MB in the end (delta: 23.9 MB). Peak memory consumption was 23.9 MB. Max. memory is 7.1 GB. * TraceAbstraction took 4064.07 ms. Allocated memory was 203.4 MB in the beginning and 249.0 MB in the end (delta: 45.6 MB). Free memory was 134.0 MB in the beginning and 140.1 MB in the end (delta: -6.1 MB). Peak memory consumption was 39.5 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks LbeTime: 2.5s, 82 ProgramPointsBefore, 35 ProgramPointsAfterwards, 78 TransitionsBefore, 30 TransitionsAfterwards, 680 CoEnabledTransitionPairs, 6 FixpointIterations, 32 TrivialSequentialCompositions, 14 ConcurrentSequentialCompositions, 6 TrivialYvCompositions, 0 ConcurrentYvCompositions, 1 ChoiceCompositions, 289 VarBasedMoverChecksPositive, 29 VarBasedMoverChecksNegative, 13 SemBasedMoverChecksPositive, 33 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.2s, 0 MoverChecksTotal, 1930 CheckedPairsTotal, 52 TotalNumberOfCompositions - PositiveResult [Line: 708]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 76 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 3.9s, OverallIterations: 4, TraceHistogramMax: 1, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 2.5s, HoareTripleCheckerStatistics: 148 SDtfs, 80 SDslu, 267 SDs, 0 SdLazy, 60 SolverSat, 6 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 20 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=198occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 4 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.5s InterpolantComputationTime, 100 NumberOfCodeBlocks, 100 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 96 ConstructedInterpolants, 0 QuantifiedInterpolants, 12048 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 4 InterpolantComputations, 4 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...