./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/pthread-atomic/dekker.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-atomic/dekker.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 f6cb963e1fbb040f542eba054f6a77048b7f932a ................................................................................................................................................................................................................................................................................................................................................................................................................................................. 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 17:57:24,072 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-28 17:57:24,075 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-28 17:57:24,089 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-28 17:57:24,090 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-28 17:57:24,092 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-28 17:57:24,094 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-28 17:57:24,097 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-28 17:57:24,101 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-28 17:57:24,103 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-28 17:57:24,105 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-28 17:57:24,114 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-28 17:57:24,114 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-28 17:57:24,116 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-28 17:57:24,119 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-28 17:57:24,121 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-28 17:57:24,122 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-28 17:57:24,126 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-28 17:57:24,129 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-28 17:57:24,133 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-28 17:57:24,135 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-28 17:57:24,138 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-28 17:57:24,142 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-28 17:57:24,144 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-28 17:57:24,146 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-28 17:57:24,148 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-28 17:57:24,149 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-28 17:57:24,150 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-28 17:57:24,151 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-28 17:57:24,153 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-28 17:57:24,154 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-28 17:57:24,154 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-28 17:57:24,155 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-28 17:57:24,156 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-28 17:57:24,158 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-28 17:57:24,159 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-28 17:57:24,160 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-28 17:57:24,160 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-28 17:57:24,160 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-28 17:57:24,163 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-28 17:57:24,164 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-28 17:57:24,165 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2019-11-28 17:57:24,203 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-28 17:57:24,206 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-28 17:57:24,207 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-28 17:57:24,209 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-28 17:57:24,209 INFO L138 SettingsManager]: * Use SBE=true [2019-11-28 17:57:24,211 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-28 17:57:24,211 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-28 17:57:24,212 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-28 17:57:24,212 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-28 17:57:24,212 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-28 17:57:24,214 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-28 17:57:24,214 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-28 17:57:24,214 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-28 17:57:24,215 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-28 17:57:24,215 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-28 17:57:24,216 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-28 17:57:24,216 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-28 17:57:24,218 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-28 17:57:24,218 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-28 17:57:24,218 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-28 17:57:24,219 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-28 17:57:24,219 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-28 17:57:24,219 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-28 17:57:24,221 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-28 17:57:24,221 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-28 17:57:24,221 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-28 17:57:24,222 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-28 17:57:24,222 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-28 17:57:24,223 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2019-11-28 17:57:24,224 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 -> f6cb963e1fbb040f542eba054f6a77048b7f932a [2019-11-28 17:57:24,574 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-28 17:57:24,589 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-28 17:57:24,593 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-28 17:57:24,595 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-28 17:57:24,597 INFO L275 PluginConnector]: CDTParser initialized [2019-11-28 17:57:24,598 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/pthread-atomic/dekker.i [2019-11-28 17:57:24,674 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1c946a425/2da99708f0fb46109d10f48ad435b3e5/FLAGe31704184 [2019-11-28 17:57:25,219 INFO L306 CDTParser]: Found 1 translation units. [2019-11-28 17:57:25,219 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-atomic/dekker.i [2019-11-28 17:57:25,239 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1c946a425/2da99708f0fb46109d10f48ad435b3e5/FLAGe31704184 [2019-11-28 17:57:25,504 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1c946a425/2da99708f0fb46109d10f48ad435b3e5 [2019-11-28 17:57:25,506 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-28 17:57:25,508 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-11-28 17:57:25,509 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-28 17:57:25,511 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-28 17:57:25,514 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-28 17:57:25,515 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 05:57:25" (1/1) ... [2019-11-28 17:57:25,518 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6f2cbe1d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:57:25, skipping insertion in model container [2019-11-28 17:57:25,518 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 05:57:25" (1/1) ... [2019-11-28 17:57:25,526 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-11-28 17:57:25,567 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-11-28 17:57:25,985 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-28 17:57:26,000 INFO L203 MainTranslator]: Completed pre-run [2019-11-28 17:57:26,064 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-28 17:57:26,145 INFO L208 MainTranslator]: Completed translation [2019-11-28 17:57:26,146 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:57:26 WrapperNode [2019-11-28 17:57:26,146 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-28 17:57:26,147 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-28 17:57:26,147 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-28 17:57:26,147 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-28 17:57:26,156 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:57:26" (1/1) ... [2019-11-28 17:57:26,189 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:57:26" (1/1) ... [2019-11-28 17:57:26,215 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-28 17:57:26,215 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-28 17:57:26,216 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-28 17:57:26,216 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-28 17:57:26,226 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:57:26" (1/1) ... [2019-11-28 17:57:26,226 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:57:26" (1/1) ... [2019-11-28 17:57:26,237 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:57:26" (1/1) ... [2019-11-28 17:57:26,238 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:57:26" (1/1) ... [2019-11-28 17:57:26,257 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:57:26" (1/1) ... [2019-11-28 17:57:26,267 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:57:26" (1/1) ... [2019-11-28 17:57:26,269 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:57:26" (1/1) ... [2019-11-28 17:57:26,272 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-28 17:57:26,272 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-28 17:57:26,273 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-28 17:57:26,273 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-28 17:57:26,274 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:57:26" (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 17:57:26,341 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-11-28 17:57:26,341 INFO L130 BoogieDeclarations]: Found specification of procedure thr2 [2019-11-28 17:57:26,342 INFO L138 BoogieDeclarations]: Found implementation of procedure thr2 [2019-11-28 17:57:26,342 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2019-11-28 17:57:26,342 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2019-11-28 17:57:26,342 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-11-28 17:57:26,343 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-11-28 17:57:26,343 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-11-28 17:57:26,343 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-28 17:57:26,343 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-28 17:57:26,345 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 17:57:26,703 INFO L282 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-28 17:57:26,703 INFO L287 CfgBuilder]: Removed 8 assume(true) statements. [2019-11-28 17:57:26,704 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 05:57:26 BoogieIcfgContainer [2019-11-28 17:57:26,704 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-28 17:57:26,705 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-28 17:57:26,705 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-28 17:57:26,709 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-28 17:57:26,709 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 05:57:25" (1/3) ... [2019-11-28 17:57:26,710 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@231e97c8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 05:57:26, skipping insertion in model container [2019-11-28 17:57:26,710 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:57:26" (2/3) ... [2019-11-28 17:57:26,711 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@231e97c8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 05:57:26, skipping insertion in model container [2019-11-28 17:57:26,711 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 05:57:26" (3/3) ... [2019-11-28 17:57:26,712 INFO L109 eAbstractionObserver]: Analyzing ICFG dekker.i [2019-11-28 17:57:26,722 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2019-11-28 17:57:26,723 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-28 17:57:26,729 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 2 error locations. [2019-11-28 17:57:26,730 INFO L339 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2019-11-28 17:57:26,756 WARN L315 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork0_#in~_.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-28 17:57:26,757 WARN L315 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork0_#in~_.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-28 17:57:26,757 WARN L315 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork0_~_.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-28 17:57:26,757 WARN L315 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork0_~_.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-28 17:57:26,758 WARN L315 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-28 17:57:26,758 WARN L315 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-28 17:57:26,759 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork1_#in~_.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-28 17:57:26,759 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork1_#in~_.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-28 17:57:26,760 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork1_~_.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-28 17:57:26,760 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork1_~_.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-28 17:57:26,761 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-28 17:57:26,761 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-28 17:57:26,798 INFO L249 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2019-11-28 17:57:26,822 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-28 17:57:26,822 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-28 17:57:26,822 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-28 17:57:26,823 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-28 17:57:26,823 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-28 17:57:26,823 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-28 17:57:26,823 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-28 17:57:26,823 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-28 17:57:26,836 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 70 places, 77 transitions [2019-11-28 17:57:26,839 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 70 places, 77 transitions [2019-11-28 17:57:26,888 INFO L134 PetriNetUnfolder]: 13/77 cut-off events. [2019-11-28 17:57:26,889 INFO L135 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2019-11-28 17:57:26,897 INFO L76 FinitePrefix]: Finished finitePrefix Result has 88 conditions, 77 events. 13/77 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 175 event pairs. 19/82 useless extension candidates. Maximal degree in co-relation 53. Up to 3 conditions per place. [2019-11-28 17:57:26,902 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 70 places, 77 transitions [2019-11-28 17:57:26,935 INFO L134 PetriNetUnfolder]: 13/77 cut-off events. [2019-11-28 17:57:26,936 INFO L135 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2019-11-28 17:57:26,938 INFO L76 FinitePrefix]: Finished finitePrefix Result has 88 conditions, 77 events. 13/77 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 175 event pairs. 19/82 useless extension candidates. Maximal degree in co-relation 53. Up to 3 conditions per place. [2019-11-28 17:57:26,942 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 1428 [2019-11-28 17:57:26,943 INFO L170 etLargeBlockEncoding]: Semantic Check. [2019-11-28 17:57:28,049 WARN L192 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 49 [2019-11-28 17:57:28,132 INFO L206 etLargeBlockEncoding]: Checked pairs total: 3136 [2019-11-28 17:57:28,132 INFO L214 etLargeBlockEncoding]: Total number of compositions: 41 [2019-11-28 17:57:28,136 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 39 places, 45 transitions [2019-11-28 17:57:28,174 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 335 states. [2019-11-28 17:57:28,176 INFO L276 IsEmpty]: Start isEmpty. Operand 335 states. [2019-11-28 17:57:28,183 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2019-11-28 17:57:28,183 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 17:57:28,184 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2019-11-28 17:57:28,184 INFO L410 AbstractCegarLoop]: === Iteration 1 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr2Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-28 17:57:28,190 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 17:57:28,190 INFO L82 PathProgramCache]: Analyzing trace with hash 307755311, now seen corresponding path program 1 times [2019-11-28 17:57:28,200 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 17:57:28,200 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1080121026] [2019-11-28 17:57:28,200 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 17:57:28,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 17:57:28,359 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 17:57:28,360 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1080121026] [2019-11-28 17:57:28,361 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-28 17:57:28,361 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-11-28 17:57:28,362 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [499103444] [2019-11-28 17:57:28,368 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-11-28 17:57:28,368 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-28 17:57:28,384 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-11-28 17:57:28,385 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-11-28 17:57:28,387 INFO L87 Difference]: Start difference. First operand 335 states. Second operand 2 states. [2019-11-28 17:57:28,419 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 17:57:28,419 INFO L93 Difference]: Finished difference Result 335 states and 891 transitions. [2019-11-28 17:57:28,420 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-11-28 17:57:28,421 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 5 [2019-11-28 17:57:28,422 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-28 17:57:28,440 INFO L225 Difference]: With dead ends: 335 [2019-11-28 17:57:28,440 INFO L226 Difference]: Without dead ends: 296 [2019-11-28 17:57:28,442 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-11-28 17:57:28,468 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 296 states. [2019-11-28 17:57:28,528 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 296 to 296. [2019-11-28 17:57:28,530 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 296 states. [2019-11-28 17:57:28,543 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 296 states to 296 states and 806 transitions. [2019-11-28 17:57:28,544 INFO L78 Accepts]: Start accepts. Automaton has 296 states and 806 transitions. Word has length 5 [2019-11-28 17:57:28,548 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-28 17:57:28,549 INFO L462 AbstractCegarLoop]: Abstraction has 296 states and 806 transitions. [2019-11-28 17:57:28,549 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-11-28 17:57:28,549 INFO L276 IsEmpty]: Start isEmpty. Operand 296 states and 806 transitions. [2019-11-28 17:57:28,550 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2019-11-28 17:57:28,550 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 17:57:28,550 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2019-11-28 17:57:28,551 INFO L410 AbstractCegarLoop]: === Iteration 2 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr2Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-28 17:57:28,551 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 17:57:28,551 INFO L82 PathProgramCache]: Analyzing trace with hash 950440607, now seen corresponding path program 1 times [2019-11-28 17:57:28,552 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 17:57:28,552 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [334716069] [2019-11-28 17:57:28,552 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 17:57:28,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 17:57:28,642 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 17:57:28,643 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [334716069] [2019-11-28 17:57:28,643 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-28 17:57:28,643 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-11-28 17:57:28,644 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2056463901] [2019-11-28 17:57:28,646 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-28 17:57:28,646 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-28 17:57:28,646 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-28 17:57:28,647 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-28 17:57:28,647 INFO L87 Difference]: Start difference. First operand 296 states and 806 transitions. Second operand 3 states. [2019-11-28 17:57:28,676 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 17:57:28,677 INFO L93 Difference]: Finished difference Result 313 states and 813 transitions. [2019-11-28 17:57:28,677 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-28 17:57:28,678 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 6 [2019-11-28 17:57:28,678 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-28 17:57:28,681 INFO L225 Difference]: With dead ends: 313 [2019-11-28 17:57:28,681 INFO L226 Difference]: Without dead ends: 250 [2019-11-28 17:57:28,683 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 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 17:57:28,688 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 250 states. [2019-11-28 17:57:28,705 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 250 to 232. [2019-11-28 17:57:28,706 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 232 states. [2019-11-28 17:57:28,708 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 232 states to 232 states and 621 transitions. [2019-11-28 17:57:28,709 INFO L78 Accepts]: Start accepts. Automaton has 232 states and 621 transitions. Word has length 6 [2019-11-28 17:57:28,709 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-28 17:57:28,709 INFO L462 AbstractCegarLoop]: Abstraction has 232 states and 621 transitions. [2019-11-28 17:57:28,709 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-28 17:57:28,710 INFO L276 IsEmpty]: Start isEmpty. Operand 232 states and 621 transitions. [2019-11-28 17:57:28,711 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2019-11-28 17:57:28,711 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 17:57:28,711 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2019-11-28 17:57:28,712 INFO L410 AbstractCegarLoop]: === Iteration 3 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr2Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-28 17:57:28,712 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 17:57:28,713 INFO L82 PathProgramCache]: Analyzing trace with hash -863522724, now seen corresponding path program 1 times [2019-11-28 17:57:28,713 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 17:57:28,713 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [623173833] [2019-11-28 17:57:28,714 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 17:57:28,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 17:57:28,793 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 17:57:28,793 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [623173833] [2019-11-28 17:57:28,793 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-28 17:57:28,794 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-11-28 17:57:28,794 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1914322186] [2019-11-28 17:57:28,794 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-28 17:57:28,796 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-28 17:57:28,796 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-28 17:57:28,796 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-28 17:57:28,796 INFO L87 Difference]: Start difference. First operand 232 states and 621 transitions. Second operand 3 states. [2019-11-28 17:57:28,829 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 17:57:28,829 INFO L93 Difference]: Finished difference Result 225 states and 583 transitions. [2019-11-28 17:57:28,831 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-28 17:57:28,832 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 8 [2019-11-28 17:57:28,832 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-28 17:57:28,833 INFO L225 Difference]: With dead ends: 225 [2019-11-28 17:57:28,834 INFO L226 Difference]: Without dead ends: 156 [2019-11-28 17:57:28,834 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 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 17:57:28,838 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 156 states. [2019-11-28 17:57:28,856 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 156 to 156. [2019-11-28 17:57:28,856 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 156 states. [2019-11-28 17:57:28,862 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 156 states to 156 states and 408 transitions. [2019-11-28 17:57:28,862 INFO L78 Accepts]: Start accepts. Automaton has 156 states and 408 transitions. Word has length 8 [2019-11-28 17:57:28,862 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-28 17:57:28,863 INFO L462 AbstractCegarLoop]: Abstraction has 156 states and 408 transitions. [2019-11-28 17:57:28,864 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-28 17:57:28,864 INFO L276 IsEmpty]: Start isEmpty. Operand 156 states and 408 transitions. [2019-11-28 17:57:28,865 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2019-11-28 17:57:28,866 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 17:57:28,867 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-28 17:57:28,867 INFO L410 AbstractCegarLoop]: === Iteration 4 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr2Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-28 17:57:28,867 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 17:57:28,868 INFO L82 PathProgramCache]: Analyzing trace with hash 1690923042, now seen corresponding path program 1 times [2019-11-28 17:57:28,868 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 17:57:28,868 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [213317380] [2019-11-28 17:57:28,868 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 17:57:28,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 17:57:28,934 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 17:57:28,935 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [213317380] [2019-11-28 17:57:28,935 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-28 17:57:28,936 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-28 17:57:28,936 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1106621344] [2019-11-28 17:57:28,936 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-28 17:57:28,936 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-28 17:57:28,937 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-28 17:57:28,937 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-28 17:57:28,937 INFO L87 Difference]: Start difference. First operand 156 states and 408 transitions. Second operand 3 states. [2019-11-28 17:57:28,973 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 17:57:28,973 INFO L93 Difference]: Finished difference Result 156 states and 398 transitions. [2019-11-28 17:57:28,975 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-28 17:57:28,975 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 11 [2019-11-28 17:57:28,975 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-28 17:57:28,976 INFO L225 Difference]: With dead ends: 156 [2019-11-28 17:57:28,978 INFO L226 Difference]: Without dead ends: 136 [2019-11-28 17:57:28,979 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 17:57:28,980 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 136 states. [2019-11-28 17:57:28,992 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 136 to 136. [2019-11-28 17:57:28,992 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 136 states. [2019-11-28 17:57:28,993 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 136 states to 136 states and 340 transitions. [2019-11-28 17:57:28,994 INFO L78 Accepts]: Start accepts. Automaton has 136 states and 340 transitions. Word has length 11 [2019-11-28 17:57:28,995 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-28 17:57:28,995 INFO L462 AbstractCegarLoop]: Abstraction has 136 states and 340 transitions. [2019-11-28 17:57:28,995 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-28 17:57:28,995 INFO L276 IsEmpty]: Start isEmpty. Operand 136 states and 340 transitions. [2019-11-28 17:57:28,996 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2019-11-28 17:57:28,997 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 17:57:28,997 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-28 17:57:28,997 INFO L410 AbstractCegarLoop]: === Iteration 5 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr2Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-28 17:57:28,997 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 17:57:28,998 INFO L82 PathProgramCache]: Analyzing trace with hash -535888112, now seen corresponding path program 2 times [2019-11-28 17:57:28,998 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 17:57:28,998 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1665253468] [2019-11-28 17:57:28,998 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 17:57:29,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 17:57:29,061 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 17:57:29,062 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1665253468] [2019-11-28 17:57:29,064 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-28 17:57:29,064 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-28 17:57:29,064 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [134930950] [2019-11-28 17:57:29,065 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-28 17:57:29,065 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-28 17:57:29,065 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-28 17:57:29,065 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-28 17:57:29,065 INFO L87 Difference]: Start difference. First operand 136 states and 340 transitions. Second operand 3 states. [2019-11-28 17:57:29,078 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 17:57:29,078 INFO L93 Difference]: Finished difference Result 86 states and 251 transitions. [2019-11-28 17:57:29,079 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-28 17:57:29,079 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 11 [2019-11-28 17:57:29,079 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-28 17:57:29,079 INFO L225 Difference]: With dead ends: 86 [2019-11-28 17:57:29,079 INFO L226 Difference]: Without dead ends: 0 [2019-11-28 17:57:29,080 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 17:57:29,080 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-11-28 17:57:29,080 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-11-28 17:57:29,081 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-11-28 17:57:29,081 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-11-28 17:57:29,081 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 11 [2019-11-28 17:57:29,081 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-28 17:57:29,081 INFO L462 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-11-28 17:57:29,082 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-28 17:57:29,082 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-11-28 17:57:29,082 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-11-28 17:57:29,086 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.11 05:57:29 BasicIcfg [2019-11-28 17:57:29,086 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-11-28 17:57:29,086 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-28 17:57:29,087 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-28 17:57:29,087 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-28 17:57:29,087 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 05:57:26" (3/4) ... [2019-11-28 17:57:29,092 INFO L137 WitnessPrinter]: Generating witness for correct program [2019-11-28 17:57:29,099 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure thr2 [2019-11-28 17:57:29,099 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure thr1 [2019-11-28 17:57:29,105 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 10 nodes and edges [2019-11-28 17:57:29,105 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2019-11-28 17:57:29,105 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2019-11-28 17:57:29,156 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2019-11-28 17:57:29,157 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-28 17:57:29,159 INFO L168 Benchmark]: Toolchain (without parser) took 3650.59 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 162.5 MB). Free memory was 956.3 MB in the beginning and 902.9 MB in the end (delta: 53.4 MB). Peak memory consumption was 216.0 MB. Max. memory is 11.5 GB. [2019-11-28 17:57:29,160 INFO L168 Benchmark]: CDTParser took 0.83 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 17:57:29,160 INFO L168 Benchmark]: CACSL2BoogieTranslator took 637.66 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 162.5 MB). Free memory was 956.3 MB in the beginning and 1.1 GB in the end (delta: -175.9 MB). Peak memory consumption was 20.5 MB. Max. memory is 11.5 GB. [2019-11-28 17:57:29,161 INFO L168 Benchmark]: Boogie Procedure Inliner took 68.16 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 6.4 MB). Peak memory consumption was 6.4 MB. Max. memory is 11.5 GB. [2019-11-28 17:57:29,162 INFO L168 Benchmark]: Boogie Preprocessor took 56.61 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 17:57:29,162 INFO L168 Benchmark]: RCFGBuilder took 431.88 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 23.5 MB). Peak memory consumption was 23.5 MB. Max. memory is 11.5 GB. [2019-11-28 17:57:29,163 INFO L168 Benchmark]: TraceAbstraction took 2380.93 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 909.3 MB in the end (delta: 193.1 MB). Peak memory consumption was 193.1 MB. Max. memory is 11.5 GB. [2019-11-28 17:57:29,163 INFO L168 Benchmark]: Witness Printer took 70.48 ms. Allocated memory is still 1.2 GB. Free memory is still 902.9 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-28 17:57:29,168 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.83 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 637.66 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 162.5 MB). Free memory was 956.3 MB in the beginning and 1.1 GB in the end (delta: -175.9 MB). Peak memory consumption was 20.5 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 68.16 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 6.4 MB). Peak memory consumption was 6.4 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 56.61 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. * RCFGBuilder took 431.88 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 23.5 MB). Peak memory consumption was 23.5 MB. Max. memory is 11.5 GB. * TraceAbstraction took 2380.93 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 909.3 MB in the end (delta: 193.1 MB). Peak memory consumption was 193.1 MB. Max. memory is 11.5 GB. * Witness Printer took 70.48 ms. Allocated memory is still 1.2 GB. Free memory is still 902.9 MB. 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: 1.2s, 70 ProgramPointsBefore, 39 ProgramPointsAfterwards, 77 TransitionsBefore, 45 TransitionsAfterwards, 1428 CoEnabledTransitionPairs, 6 FixpointIterations, 18 TrivialSequentialCompositions, 14 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 9 ConcurrentYvCompositions, 2 ChoiceCompositions, 605 VarBasedMoverChecksPositive, 60 VarBasedMoverChecksNegative, 39 SemBasedMoverChecksPositive, 29 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.2s, 0 MoverChecksTotal, 3136 CheckedPairsTotal, 41 TotalNumberOfCompositions - PositiveResult [Line: 702]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 687]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 2 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 64 locations, 2 error locations. Result: SAFE, OverallTime: 2.2s, OverallIterations: 5, TraceHistogramMax: 1, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 199 SDtfs, 82 SDslu, 68 SDs, 0 SdLazy, 28 SolverSat, 5 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 12 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=335occurred 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: 0.1s AutomataMinimizationTime, 5 MinimizatonAttempts, 18 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 41 NumberOfCodeBlocks, 41 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 36 ConstructedInterpolants, 0 QuantifiedInterpolants, 454 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 5 InterpolantComputations, 5 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...