./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/pthread/stateful01-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version f470102c Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx12G -Xms1G -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/pthread/stateful01-2.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(__VERIFIER_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash a4a47048478df3e0b96f55978373f0c6fcefc18a ............................................................................................................................................................................................................................................................................................................................................................................................................................ Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.25-f470102 [2019-11-28 17:57:08,913 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-28 17:57:08,916 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-28 17:57:08,936 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-28 17:57:08,937 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-28 17:57:08,939 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-28 17:57:08,941 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-28 17:57:08,950 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-28 17:57:08,955 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-28 17:57:08,959 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-28 17:57:08,960 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-28 17:57:08,962 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-28 17:57:08,963 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-28 17:57:08,965 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-28 17:57:08,967 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-28 17:57:08,968 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-28 17:57:08,970 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-28 17:57:08,971 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-28 17:57:08,973 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-28 17:57:08,977 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-28 17:57:08,982 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-28 17:57:08,986 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-28 17:57:08,988 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-28 17:57:08,989 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-28 17:57:08,994 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-28 17:57:08,994 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-28 17:57:08,995 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-28 17:57:08,997 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-28 17:57:08,997 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-28 17:57:08,998 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-28 17:57:08,999 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-28 17:57:09,000 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-28 17:57:09,000 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-28 17:57:09,002 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-28 17:57:09,003 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-28 17:57:09,004 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-28 17:57:09,005 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-28 17:57:09,005 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-28 17:57:09,006 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-28 17:57:09,007 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-28 17:57:09,008 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-28 17:57:09,010 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2019-11-28 17:57:09,045 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-28 17:57:09,048 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-28 17:57:09,049 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-28 17:57:09,050 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-28 17:57:09,053 INFO L138 SettingsManager]: * Use SBE=true [2019-11-28 17:57:09,053 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-28 17:57:09,054 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-28 17:57:09,054 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-28 17:57:09,054 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-28 17:57:09,054 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-28 17:57:09,055 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-28 17:57:09,055 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-28 17:57:09,055 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-28 17:57:09,056 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-28 17:57:09,058 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-28 17:57:09,058 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-28 17:57:09,058 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-28 17:57:09,059 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-28 17:57:09,059 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-28 17:57:09,059 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-28 17:57:09,061 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-28 17:57:09,061 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-28 17:57:09,061 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-28 17:57:09,064 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-28 17:57:09,064 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-28 17:57:09,064 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-28 17:57:09,065 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-28 17:57:09,065 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-28 17:57:09,065 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2019-11-28 17:57:09,066 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(__VERIFIER_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a4a47048478df3e0b96f55978373f0c6fcefc18a [2019-11-28 17:57:09,387 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-28 17:57:09,405 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-28 17:57:09,408 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-28 17:57:09,409 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-28 17:57:09,410 INFO L275 PluginConnector]: CDTParser initialized [2019-11-28 17:57:09,411 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/pthread/stateful01-2.i [2019-11-28 17:57:09,471 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/475707182/95eac0533fcf45ff903f54bb77f851fe/FLAG37a7a1ce7 [2019-11-28 17:57:09,995 INFO L306 CDTParser]: Found 1 translation units. [2019-11-28 17:57:09,996 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread/stateful01-2.i [2019-11-28 17:57:10,012 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/475707182/95eac0533fcf45ff903f54bb77f851fe/FLAG37a7a1ce7 [2019-11-28 17:57:10,315 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/475707182/95eac0533fcf45ff903f54bb77f851fe [2019-11-28 17:57:10,318 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-28 17:57:10,320 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-11-28 17:57:10,321 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-28 17:57:10,322 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-28 17:57:10,325 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-28 17:57:10,326 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 05:57:10" (1/1) ... [2019-11-28 17:57:10,329 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@672d8e3c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:57:10, skipping insertion in model container [2019-11-28 17:57:10,329 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 05:57:10" (1/1) ... [2019-11-28 17:57:10,336 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-11-28 17:57:10,393 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-11-28 17:57:10,798 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-28 17:57:10,817 INFO L203 MainTranslator]: Completed pre-run [2019-11-28 17:57:10,893 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-28 17:57:10,973 INFO L208 MainTranslator]: Completed translation [2019-11-28 17:57:10,974 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:57:10 WrapperNode [2019-11-28 17:57:10,974 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-28 17:57:10,975 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-28 17:57:10,975 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-28 17:57:10,976 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-28 17:57:10,985 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:57:10" (1/1) ... [2019-11-28 17:57:11,004 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:57:10" (1/1) ... [2019-11-28 17:57:11,028 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-28 17:57:11,028 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-28 17:57:11,028 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-28 17:57:11,029 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-28 17:57:11,036 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:57:10" (1/1) ... [2019-11-28 17:57:11,036 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:57:10" (1/1) ... [2019-11-28 17:57:11,039 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:57:10" (1/1) ... [2019-11-28 17:57:11,040 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:57:10" (1/1) ... [2019-11-28 17:57:11,046 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:57:10" (1/1) ... [2019-11-28 17:57:11,049 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:57:10" (1/1) ... [2019-11-28 17:57:11,051 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:57:10" (1/1) ... [2019-11-28 17:57:11,054 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-28 17:57:11,055 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-28 17:57:11,055 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-28 17:57:11,055 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-28 17:57:11,056 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:57:10" (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 [2019-11-28 17:57:11,126 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-11-28 17:57:11,126 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2019-11-28 17:57:11,127 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2019-11-28 17:57:11,127 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2019-11-28 17:57:11,127 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2019-11-28 17:57:11,127 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-11-28 17:57:11,128 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2019-11-28 17:57:11,128 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-11-28 17:57:11,128 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-11-28 17:57:11,128 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-11-28 17:57:11,129 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-28 17:57:11,129 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-28 17:57:11,131 WARN L205 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2019-11-28 17:57:11,534 INFO L282 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-28 17:57:11,534 INFO L287 CfgBuilder]: Removed 4 assume(true) statements. [2019-11-28 17:57:11,536 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 05:57:11 BoogieIcfgContainer [2019-11-28 17:57:11,536 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-28 17:57:11,537 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-28 17:57:11,537 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-28 17:57:11,544 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-28 17:57:11,545 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 05:57:10" (1/3) ... [2019-11-28 17:57:11,546 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@203c5a5a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 05:57:11, skipping insertion in model container [2019-11-28 17:57:11,546 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:57:10" (2/3) ... [2019-11-28 17:57:11,546 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@203c5a5a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 05:57:11, skipping insertion in model container [2019-11-28 17:57:11,547 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 05:57:11" (3/3) ... [2019-11-28 17:57:11,548 INFO L109 eAbstractionObserver]: Analyzing ICFG stateful01-2.i [2019-11-28 17:57:11,556 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2019-11-28 17:57:11,557 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-28 17:57:11,563 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-28 17:57:11,564 INFO L339 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2019-11-28 17:57:11,589 WARN L315 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-28 17:57:11,590 WARN L315 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-28 17:57:11,590 WARN L315 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-28 17:57:11,591 WARN L315 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-28 17:57:11,591 WARN L315 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~nondet2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-28 17:57:11,591 WARN L315 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~nondet2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-28 17:57:11,592 WARN L315 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-28 17:57:11,592 WARN L315 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-28 17:57:11,592 WARN L315 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-28 17:57:11,593 WARN L315 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~nondet4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-28 17:57:11,593 WARN L315 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~nondet4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-28 17:57:11,593 WARN L315 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-28 17:57:11,594 WARN L315 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-28 17:57:11,594 WARN L315 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-28 17:57:11,594 WARN L315 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-28 17:57:11,595 WARN L315 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-28 17:57:11,595 WARN L315 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-28 17:57:11,595 WARN L315 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-28 17:57:11,596 WARN L315 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-28 17:57:11,596 WARN L315 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-28 17:57:11,596 WARN L315 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~nondet6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-28 17:57:11,597 WARN L315 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~nondet6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-28 17:57:11,597 WARN L315 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~nondet7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-28 17:57:11,597 WARN L315 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~nondet7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-28 17:57:11,598 WARN L315 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-28 17:57:11,598 WARN L315 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-28 17:57:11,635 INFO L249 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2019-11-28 17:57:11,655 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-28 17:57:11,655 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-28 17:57:11,655 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-28 17:57:11,655 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-28 17:57:11,656 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-28 17:57:11,656 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-28 17:57:11,656 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-28 17:57:11,656 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-28 17:57:11,670 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 82 places, 78 transitions [2019-11-28 17:57:11,671 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 82 places, 78 transitions [2019-11-28 17:57:11,720 INFO L134 PetriNetUnfolder]: 2/78 cut-off events. [2019-11-28 17:57:11,721 INFO L135 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2019-11-28 17:57:11,727 INFO L76 FinitePrefix]: Finished finitePrefix Result has 89 conditions, 78 events. 2/78 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 51 event pairs. 19/95 useless extension candidates. Maximal degree in co-relation 46. Up to 3 conditions per place. [2019-11-28 17:57:11,730 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 82 places, 78 transitions [2019-11-28 17:57:11,756 INFO L134 PetriNetUnfolder]: 2/78 cut-off events. [2019-11-28 17:57:11,756 INFO L135 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2019-11-28 17:57:11,758 INFO L76 FinitePrefix]: Finished finitePrefix Result has 89 conditions, 78 events. 2/78 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 51 event pairs. 19/95 useless extension candidates. Maximal degree in co-relation 46. Up to 3 conditions per place. [2019-11-28 17:57:11,760 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 680 [2019-11-28 17:57:11,761 INFO L170 etLargeBlockEncoding]: Semantic Check. [2019-11-28 17:57:13,565 WARN L192 SmtUtils]: Spent 188.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 66 [2019-11-28 17:57:14,150 WARN L192 SmtUtils]: Spent 446.00 ms on a formula simplification. DAG size of input: 111 DAG size of output: 107 [2019-11-28 17:57:14,369 WARN L192 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 103 [2019-11-28 17:57:14,380 INFO L206 etLargeBlockEncoding]: Checked pairs total: 1930 [2019-11-28 17:57:14,380 INFO L214 etLargeBlockEncoding]: Total number of compositions: 51 [2019-11-28 17:57:14,384 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 34 places, 30 transitions [2019-11-28 17:57:14,407 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 198 states. [2019-11-28 17:57:14,409 INFO L276 IsEmpty]: Start isEmpty. Operand 198 states. [2019-11-28 17:57:14,421 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2019-11-28 17:57:14,421 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 17:57:14,422 INFO L410 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] [2019-11-28 17:57:14,423 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-28 17:57:14,429 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 17:57:14,429 INFO L82 PathProgramCache]: Analyzing trace with hash -1542005391, now seen corresponding path program 1 times [2019-11-28 17:57:14,437 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 17:57:14,437 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [32330695] [2019-11-28 17:57:14,437 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 17:57:14,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 17:57:14,654 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 17:57:14,655 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [32330695] [2019-11-28 17:57:14,656 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-28 17:57:14,656 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-28 17:57:14,657 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [239940399] [2019-11-28 17:57:14,662 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-28 17:57:14,663 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-28 17:57:14,678 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-28 17:57:14,679 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-28 17:57:14,681 INFO L87 Difference]: Start difference. First operand 198 states. Second operand 3 states. [2019-11-28 17:57:14,752 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 17:57:14,752 INFO L93 Difference]: Finished difference Result 150 states and 254 transitions. [2019-11-28 17:57:14,753 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-28 17:57:14,755 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 25 [2019-11-28 17:57:14,755 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-28 17:57:14,780 INFO L225 Difference]: With dead ends: 150 [2019-11-28 17:57:14,787 INFO L226 Difference]: Without dead ends: 149 [2019-11-28 17:57:14,789 INFO L630 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 [2019-11-28 17:57:14,811 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 149 states. [2019-11-28 17:57:14,848 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 149 to 149. [2019-11-28 17:57:14,850 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 149 states. [2019-11-28 17:57:14,852 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 149 states to 149 states and 253 transitions. [2019-11-28 17:57:14,854 INFO L78 Accepts]: Start accepts. Automaton has 149 states and 253 transitions. Word has length 25 [2019-11-28 17:57:14,854 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-28 17:57:14,854 INFO L462 AbstractCegarLoop]: Abstraction has 149 states and 253 transitions. [2019-11-28 17:57:14,854 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-28 17:57:14,855 INFO L276 IsEmpty]: Start isEmpty. Operand 149 states and 253 transitions. [2019-11-28 17:57:14,857 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2019-11-28 17:57:14,857 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 17:57:14,857 INFO L410 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] [2019-11-28 17:57:14,858 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-28 17:57:14,858 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 17:57:14,858 INFO L82 PathProgramCache]: Analyzing trace with hash -730981135, now seen corresponding path program 2 times [2019-11-28 17:57:14,858 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 17:57:14,859 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1828528608] [2019-11-28 17:57:14,859 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 17:57:14,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 17:57:15,004 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 17:57:15,004 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1828528608] [2019-11-28 17:57:15,005 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-28 17:57:15,005 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-11-28 17:57:15,005 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2147357541] [2019-11-28 17:57:15,007 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-28 17:57:15,007 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-28 17:57:15,008 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-28 17:57:15,008 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-11-28 17:57:15,008 INFO L87 Difference]: Start difference. First operand 149 states and 253 transitions. Second operand 5 states. [2019-11-28 17:57:15,063 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 17:57:15,063 INFO L93 Difference]: Finished difference Result 149 states and 252 transitions. [2019-11-28 17:57:15,064 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-28 17:57:15,064 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 25 [2019-11-28 17:57:15,064 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-28 17:57:15,065 INFO L225 Difference]: With dead ends: 149 [2019-11-28 17:57:15,066 INFO L226 Difference]: Without dead ends: 122 [2019-11-28 17:57:15,067 INFO L630 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 [2019-11-28 17:57:15,068 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122 states. [2019-11-28 17:57:15,076 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122 to 122. [2019-11-28 17:57:15,076 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 122 states. [2019-11-28 17:57:15,078 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 122 states to 122 states and 201 transitions. [2019-11-28 17:57:15,079 INFO L78 Accepts]: Start accepts. Automaton has 122 states and 201 transitions. Word has length 25 [2019-11-28 17:57:15,079 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-28 17:57:15,079 INFO L462 AbstractCegarLoop]: Abstraction has 122 states and 201 transitions. [2019-11-28 17:57:15,079 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-28 17:57:15,080 INFO L276 IsEmpty]: Start isEmpty. Operand 122 states and 201 transitions. [2019-11-28 17:57:15,081 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2019-11-28 17:57:15,081 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 17:57:15,082 INFO L410 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] [2019-11-28 17:57:15,082 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-28 17:57:15,082 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 17:57:15,083 INFO L82 PathProgramCache]: Analyzing trace with hash -1725045385, now seen corresponding path program 1 times [2019-11-28 17:57:15,083 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 17:57:15,083 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1888033242] [2019-11-28 17:57:15,084 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 17:57:15,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 17:57:15,257 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 17:57:15,257 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1888033242] [2019-11-28 17:57:15,257 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-28 17:57:15,258 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-11-28 17:57:15,258 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2050121805] [2019-11-28 17:57:15,258 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-11-28 17:57:15,259 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-28 17:57:15,260 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-11-28 17:57:15,260 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2019-11-28 17:57:15,260 INFO L87 Difference]: Start difference. First operand 122 states and 201 transitions. Second operand 6 states. [2019-11-28 17:57:15,319 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 17:57:15,319 INFO L93 Difference]: Finished difference Result 164 states and 266 transitions. [2019-11-28 17:57:15,319 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-11-28 17:57:15,320 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 25 [2019-11-28 17:57:15,320 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-28 17:57:15,321 INFO L225 Difference]: With dead ends: 164 [2019-11-28 17:57:15,321 INFO L226 Difference]: Without dead ends: 98 [2019-11-28 17:57:15,322 INFO L630 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 [2019-11-28 17:57:15,322 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2019-11-28 17:57:15,332 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 98. [2019-11-28 17:57:15,336 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 98 states. [2019-11-28 17:57:15,337 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 161 transitions. [2019-11-28 17:57:15,341 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 161 transitions. Word has length 25 [2019-11-28 17:57:15,341 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-28 17:57:15,341 INFO L462 AbstractCegarLoop]: Abstraction has 98 states and 161 transitions. [2019-11-28 17:57:15,342 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-11-28 17:57:15,342 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 161 transitions. [2019-11-28 17:57:15,343 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2019-11-28 17:57:15,346 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 17:57:15,347 INFO L410 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] [2019-11-28 17:57:15,347 INFO L410 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-28 17:57:15,347 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 17:57:15,348 INFO L82 PathProgramCache]: Analyzing trace with hash -864016559, now seen corresponding path program 2 times [2019-11-28 17:57:15,348 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 17:57:15,348 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [244866207] [2019-11-28 17:57:15,348 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 17:57:15,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 17:57:15,493 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 17:57:15,493 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [244866207] [2019-11-28 17:57:15,493 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-28 17:57:15,494 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-11-28 17:57:15,494 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [505776887] [2019-11-28 17:57:15,494 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-11-28 17:57:15,494 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-28 17:57:15,495 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-11-28 17:57:15,495 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2019-11-28 17:57:15,495 INFO L87 Difference]: Start difference. First operand 98 states and 161 transitions. Second operand 6 states. [2019-11-28 17:57:15,524 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 17:57:15,525 INFO L93 Difference]: Finished difference Result 97 states and 160 transitions. [2019-11-28 17:57:15,525 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-11-28 17:57:15,525 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 25 [2019-11-28 17:57:15,526 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-28 17:57:15,526 INFO L225 Difference]: With dead ends: 97 [2019-11-28 17:57:15,526 INFO L226 Difference]: Without dead ends: 0 [2019-11-28 17:57:15,527 INFO L630 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 [2019-11-28 17:57:15,527 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-11-28 17:57:15,527 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-11-28 17:57:15,527 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-11-28 17:57:15,527 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-11-28 17:57:15,527 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 25 [2019-11-28 17:57:15,528 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-28 17:57:15,528 INFO L462 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-11-28 17:57:15,528 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-11-28 17:57:15,529 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-11-28 17:57:15,529 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-11-28 17:57:15,533 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.11 05:57:15 BasicIcfg [2019-11-28 17:57:15,534 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-11-28 17:57:15,534 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-28 17:57:15,534 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-28 17:57:15,535 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-28 17:57:15,535 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 05:57:11" (3/4) ... [2019-11-28 17:57:15,539 INFO L137 WitnessPrinter]: Generating witness for correct program [2019-11-28 17:57:15,545 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure thread1 [2019-11-28 17:57:15,546 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure thread2 [2019-11-28 17:57:15,551 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 10 nodes and edges [2019-11-28 17:57:15,551 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2019-11-28 17:57:15,551 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2019-11-28 17:57:15,600 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2019-11-28 17:57:15,601 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-28 17:57:15,603 INFO L168 Benchmark]: Toolchain (without parser) took 5282.73 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 192.9 MB). Free memory was 961.7 MB in the beginning and 1.1 GB in the end (delta: -122.9 MB). Peak memory consumption was 70.0 MB. Max. memory is 11.5 GB. [2019-11-28 17:57:15,604 INFO L168 Benchmark]: CDTParser took 0.36 ms. Allocated memory is still 1.0 GB. Free memory is still 987.2 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-28 17:57:15,604 INFO L168 Benchmark]: CACSL2BoogieTranslator took 653.42 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 118.0 MB). Free memory was 956.3 MB in the beginning and 1.1 GB in the end (delta: -135.8 MB). Peak memory consumption was 26.0 MB. Max. memory is 11.5 GB. [2019-11-28 17:57:15,605 INFO L168 Benchmark]: Boogie Procedure Inliner took 52.86 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 6.8 MB). Peak memory consumption was 6.8 MB. Max. memory is 11.5 GB. [2019-11-28 17:57:15,606 INFO L168 Benchmark]: Boogie Preprocessor took 26.37 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-28 17:57:15,608 INFO L168 Benchmark]: RCFGBuilder took 481.08 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 24.8 MB). Peak memory consumption was 24.8 MB. Max. memory is 11.5 GB. [2019-11-28 17:57:15,609 INFO L168 Benchmark]: TraceAbstraction took 3996.91 ms. Allocated memory was 1.1 GB in the beginning and 1.2 GB in the end (delta: 75.0 MB). Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: -24.0 MB). Peak memory consumption was 51.0 MB. Max. memory is 11.5 GB. [2019-11-28 17:57:15,611 INFO L168 Benchmark]: Witness Printer took 66.79 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-28 17:57:15,616 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.36 ms. Allocated memory is still 1.0 GB. Free memory is still 987.2 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 653.42 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 118.0 MB). Free memory was 956.3 MB in the beginning and 1.1 GB in the end (delta: -135.8 MB). Peak memory consumption was 26.0 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 52.86 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 6.8 MB). Peak memory consumption was 6.8 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 26.37 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 481.08 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 24.8 MB). Peak memory consumption was 24.8 MB. Max. memory is 11.5 GB. * TraceAbstraction took 3996.91 ms. Allocated memory was 1.1 GB in the beginning and 1.2 GB in the end (delta: 75.0 MB). Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: -24.0 MB). Peak memory consumption was 51.0 MB. Max. memory is 11.5 GB. * Witness Printer took 66.79 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks LbeTime: 2.7s, 82 ProgramPointsBefore, 34 ProgramPointsAfterwards, 78 TransitionsBefore, 30 TransitionsAfterwards, 680 CoEnabledTransitionPairs, 6 FixpointIterations, 32 TrivialSequentialCompositions, 14 ConcurrentSequentialCompositions, 5 TrivialYvCompositions, 0 ConcurrentYvCompositions, 1 ChoiceCompositions, 289 VarBasedMoverChecksPositive, 29 VarBasedMoverChecksNegative, 13 SemBasedMoverChecksPositive, 33 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.2s, 0 MoverChecksTotal, 1930 CheckedPairsTotal, 51 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. Result: SAFE, OverallTime: 3.8s, OverallIterations: 4, TraceHistogramMax: 1, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 148 SDtfs, 80 SDslu, 269 SDs, 0 SdLazy, 58 SolverSat, 6 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s 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, 0.4s 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, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...