./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/pthread-wmm/thin002_pso.oepc.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 9a8b2e8d Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -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-wmm/thin002_pso.oepc.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(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash fa3e2ddd2156ae746a75cc70eab9b6ff4fc79271 .......................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.25-9a8b2e8 [2020-10-20 03:09:03,222 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-20 03:09:03,227 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-20 03:09:03,266 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-20 03:09:03,266 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-20 03:09:03,276 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-20 03:09:03,278 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-20 03:09:03,281 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-20 03:09:03,284 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-20 03:09:03,287 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-20 03:09:03,289 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-20 03:09:03,290 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-20 03:09:03,290 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-20 03:09:03,294 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-20 03:09:03,295 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-20 03:09:03,297 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-20 03:09:03,299 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-20 03:09:03,300 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-20 03:09:03,303 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-20 03:09:03,311 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-20 03:09:03,321 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-20 03:09:03,322 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-20 03:09:03,325 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-20 03:09:03,326 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-20 03:09:03,331 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-20 03:09:03,331 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-20 03:09:03,331 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-20 03:09:03,335 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-20 03:09:03,336 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-20 03:09:03,337 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-20 03:09:03,337 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-20 03:09:03,338 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-20 03:09:03,340 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-20 03:09:03,342 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-20 03:09:03,344 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-20 03:09:03,344 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-20 03:09:03,345 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-20 03:09:03,346 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-20 03:09:03,346 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-20 03:09:03,347 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-20 03:09:03,349 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-20 03:09:03,350 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-20 03:09:03,396 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-20 03:09:03,396 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-20 03:09:03,397 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-20 03:09:03,398 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-20 03:09:03,398 INFO L138 SettingsManager]: * Use SBE=true [2020-10-20 03:09:03,398 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-20 03:09:03,398 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-20 03:09:03,398 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-20 03:09:03,398 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-20 03:09:03,399 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-20 03:09:03,399 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-20 03:09:03,399 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-20 03:09:03,399 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-20 03:09:03,399 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-20 03:09:03,400 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-20 03:09:03,400 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-20 03:09:03,400 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-20 03:09:03,400 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-20 03:09:03,400 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-20 03:09:03,401 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-20 03:09:03,401 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-20 03:09:03,401 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-20 03:09:03,401 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-20 03:09:03,401 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-20 03:09:03,401 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-20 03:09:03,402 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-20 03:09:03,402 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-20 03:09:03,402 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-20 03:09:03,402 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-20 03:09:03,402 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(reach_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 -> fa3e2ddd2156ae746a75cc70eab9b6ff4fc79271 [2020-10-20 03:09:03,607 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-20 03:09:03,619 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-20 03:09:03,623 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-20 03:09:03,626 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-20 03:09:03,628 INFO L275 PluginConnector]: CDTParser initialized [2020-10-20 03:09:03,629 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/pthread-wmm/thin002_pso.oepc.i [2020-10-20 03:09:03,694 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1a3fdb0a8/b9a8eeedb1854b90857e24c53751d4a8/FLAG5b5e8590e [2020-10-20 03:09:04,294 INFO L306 CDTParser]: Found 1 translation units. [2020-10-20 03:09:04,295 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-wmm/thin002_pso.oepc.i [2020-10-20 03:09:04,321 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1a3fdb0a8/b9a8eeedb1854b90857e24c53751d4a8/FLAG5b5e8590e [2020-10-20 03:09:04,488 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1a3fdb0a8/b9a8eeedb1854b90857e24c53751d4a8 [2020-10-20 03:09:04,492 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-20 03:09:04,499 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-10-20 03:09:04,500 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-20 03:09:04,501 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-20 03:09:04,504 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-20 03:09:04,506 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.10 03:09:04" (1/1) ... [2020-10-20 03:09:04,509 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2350664f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 03:09:04, skipping insertion in model container [2020-10-20 03:09:04,509 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.10 03:09:04" (1/1) ... [2020-10-20 03:09:04,517 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-20 03:09:04,559 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-20 03:09:04,982 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-20 03:09:04,993 INFO L203 MainTranslator]: Completed pre-run [2020-10-20 03:09:05,043 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-20 03:09:05,121 INFO L208 MainTranslator]: Completed translation [2020-10-20 03:09:05,121 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 03:09:05 WrapperNode [2020-10-20 03:09:05,122 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-20 03:09:05,123 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-20 03:09:05,123 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-20 03:09:05,123 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-20 03:09:05,132 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 03:09:05" (1/1) ... [2020-10-20 03:09:05,149 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 03:09:05" (1/1) ... [2020-10-20 03:09:05,173 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-20 03:09:05,174 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-20 03:09:05,174 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-20 03:09:05,174 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-20 03:09:05,183 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 03:09:05" (1/1) ... [2020-10-20 03:09:05,183 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 03:09:05" (1/1) ... [2020-10-20 03:09:05,187 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 03:09:05" (1/1) ... [2020-10-20 03:09:05,187 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 03:09:05" (1/1) ... [2020-10-20 03:09:05,195 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 03:09:05" (1/1) ... [2020-10-20 03:09:05,198 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 03:09:05" (1/1) ... [2020-10-20 03:09:05,200 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 03:09:05" (1/1) ... [2020-10-20 03:09:05,204 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-20 03:09:05,211 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-20 03:09:05,211 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-20 03:09:05,211 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-20 03:09:05,212 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 03:09:05" (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 [2020-10-20 03:09:05,282 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-20 03:09:05,282 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-10-20 03:09:05,282 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-20 03:09:05,282 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-20 03:09:05,282 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-10-20 03:09:05,282 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-10-20 03:09:05,283 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-10-20 03:09:05,283 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-10-20 03:09:05,283 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-10-20 03:09:05,283 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-10-20 03:09:05,283 INFO L130 BoogieDeclarations]: Found specification of procedure P3 [2020-10-20 03:09:05,283 INFO L138 BoogieDeclarations]: Found implementation of procedure P3 [2020-10-20 03:09:05,283 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-20 03:09:05,284 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-10-20 03:09:05,284 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-20 03:09:05,284 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-20 03:09:05,285 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-10-20 03:09:05,688 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-20 03:09:05,689 INFO L298 CfgBuilder]: Removed 10 assume(true) statements. [2020-10-20 03:09:05,691 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 03:09:05 BoogieIcfgContainer [2020-10-20 03:09:05,692 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-20 03:09:05,693 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-20 03:09:05,693 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-20 03:09:05,697 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-20 03:09:05,697 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.10 03:09:04" (1/3) ... [2020-10-20 03:09:05,698 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@16c6e59b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.10 03:09:05, skipping insertion in model container [2020-10-20 03:09:05,699 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 03:09:05" (2/3) ... [2020-10-20 03:09:05,699 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@16c6e59b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.10 03:09:05, skipping insertion in model container [2020-10-20 03:09:05,699 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 03:09:05" (3/3) ... [2020-10-20 03:09:05,701 INFO L111 eAbstractionObserver]: Analyzing ICFG thin002_pso.oepc.i [2020-10-20 03:09:05,713 WARN L153 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-10-20 03:09:05,713 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-20 03:09:05,721 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-20 03:09:05,723 INFO L348 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-10-20 03:09:05,756 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork3_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 03:09:05,757 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork3_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 03:09:05,757 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork3_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 03:09:05,758 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork3_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 03:09:05,758 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork3_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 03:09:05,759 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork3_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 03:09:05,759 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 03:09:05,760 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 03:09:05,760 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 03:09:05,760 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 03:09:05,761 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 03:09:05,761 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 03:09:05,761 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 03:09:05,762 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 03:09:05,762 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 03:09:05,762 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 03:09:05,763 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 03:09:05,763 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 03:09:05,764 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 03:09:05,764 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 03:09:05,764 WARN L313 ript$VariableManager]: TermVariabe P3Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 03:09:05,764 WARN L313 ript$VariableManager]: TermVariabe P3Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 03:09:05,765 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 03:09:05,765 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 03:09:05,770 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 03:09:05,770 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 03:09:05,771 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 03:09:05,771 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 03:09:05,778 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 03:09:05,778 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 03:09:05,779 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 03:09:05,779 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 03:09:05,781 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 03:09:05,782 WARN L313 ript$VariableManager]: TermVariabe P3Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 03:09:05,782 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 03:09:05,782 WARN L313 ript$VariableManager]: TermVariabe P3Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 03:09:05,784 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork3_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 03:09:05,785 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork3_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 03:09:05,785 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork3_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 03:09:05,785 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork3_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 03:09:05,787 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2020-10-20 03:09:05,802 INFO L253 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2020-10-20 03:09:05,823 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-20 03:09:05,824 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-20 03:09:05,824 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-20 03:09:05,824 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-20 03:09:05,824 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-20 03:09:05,825 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-20 03:09:05,825 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-20 03:09:05,825 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-20 03:09:05,841 INFO L129 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2020-10-20 03:09:05,844 INFO L144 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 105 places, 95 transitions, 210 flow [2020-10-20 03:09:05,847 INFO L111 LiptonReduction]: Starting Lipton reduction on Petri net that has 105 places, 95 transitions, 210 flow [2020-10-20 03:09:05,849 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 105 places, 95 transitions, 210 flow [2020-10-20 03:09:05,915 INFO L129 PetriNetUnfolder]: 3/91 cut-off events. [2020-10-20 03:09:05,915 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-20 03:09:05,921 INFO L80 FinitePrefix]: Finished finitePrefix Result has 104 conditions, 91 events. 3/91 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 74 event pairs, 0 based on Foata normal form. 0/87 useless extension candidates. Maximal degree in co-relation 74. Up to 2 conditions per place. [2020-10-20 03:09:05,925 INFO L117 LiptonReduction]: Number of co-enabled transitions 2256 [2020-10-20 03:09:08,050 WARN L193 SmtUtils]: Spent 232.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 82 [2020-10-20 03:09:08,179 WARN L193 SmtUtils]: Spent 125.00 ms on a formula simplification that was a NOOP. DAG size: 78 [2020-10-20 03:09:08,229 INFO L132 LiptonReduction]: Checked pairs total: 4418 [2020-10-20 03:09:08,230 INFO L134 LiptonReduction]: Total number of compositions: 80 [2020-10-20 03:09:08,237 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 41 places, 29 transitions, 78 flow [2020-10-20 03:09:08,322 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 1450 states. [2020-10-20 03:09:08,325 INFO L276 IsEmpty]: Start isEmpty. Operand 1450 states. [2020-10-20 03:09:08,336 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-10-20 03:09:08,336 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 03:09:08,337 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 03:09:08,338 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-20 03:09:08,344 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 03:09:08,344 INFO L82 PathProgramCache]: Analyzing trace with hash 481695671, now seen corresponding path program 1 times [2020-10-20 03:09:08,355 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 03:09:08,356 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [630046829] [2020-10-20 03:09:08,357 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 03:09:08,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 03:09:08,563 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 03:09:08,563 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [630046829] [2020-10-20 03:09:08,564 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 03:09:08,565 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-20 03:09:08,566 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2121002172] [2020-10-20 03:09:08,570 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-10-20 03:09:08,571 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 03:09:08,586 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-10-20 03:09:08,587 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-10-20 03:09:08,590 INFO L87 Difference]: Start difference. First operand 1450 states. Second operand 2 states. [2020-10-20 03:09:08,808 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 03:09:08,808 INFO L93 Difference]: Finished difference Result 1450 states and 5376 transitions. [2020-10-20 03:09:08,808 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-10-20 03:09:08,810 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 10 [2020-10-20 03:09:08,810 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 03:09:08,843 INFO L225 Difference]: With dead ends: 1450 [2020-10-20 03:09:08,844 INFO L226 Difference]: Without dead ends: 1194 [2020-10-20 03:09:08,845 INFO L677 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 [2020-10-20 03:09:08,880 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1194 states. [2020-10-20 03:09:08,982 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1194 to 1194. [2020-10-20 03:09:08,983 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1194 states. [2020-10-20 03:09:08,991 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1194 states to 1194 states and 4352 transitions. [2020-10-20 03:09:08,992 INFO L78 Accepts]: Start accepts. Automaton has 1194 states and 4352 transitions. Word has length 10 [2020-10-20 03:09:08,993 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 03:09:08,994 INFO L481 AbstractCegarLoop]: Abstraction has 1194 states and 4352 transitions. [2020-10-20 03:09:08,994 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-10-20 03:09:08,995 INFO L276 IsEmpty]: Start isEmpty. Operand 1194 states and 4352 transitions. [2020-10-20 03:09:09,003 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-10-20 03:09:09,009 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 03:09:09,010 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 03:09:09,010 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-20 03:09:09,010 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-20 03:09:09,011 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 03:09:09,011 INFO L82 PathProgramCache]: Analyzing trace with hash 2047662136, now seen corresponding path program 1 times [2020-10-20 03:09:09,011 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 03:09:09,011 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [122214997] [2020-10-20 03:09:09,011 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 03:09:09,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 03:09:09,159 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 03:09:09,159 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [122214997] [2020-10-20 03:09:09,159 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 03:09:09,159 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-20 03:09:09,160 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [975992685] [2020-10-20 03:09:09,161 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-20 03:09:09,162 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 03:09:09,162 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-20 03:09:09,162 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-20 03:09:09,162 INFO L87 Difference]: Start difference. First operand 1194 states and 4352 transitions. Second operand 4 states. [2020-10-20 03:09:09,203 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 03:09:09,204 INFO L93 Difference]: Finished difference Result 1322 states and 4640 transitions. [2020-10-20 03:09:09,204 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-20 03:09:09,204 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2020-10-20 03:09:09,205 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 03:09:09,214 INFO L225 Difference]: With dead ends: 1322 [2020-10-20 03:09:09,215 INFO L226 Difference]: Without dead ends: 1066 [2020-10-20 03:09:09,216 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-20 03:09:09,355 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1066 states. [2020-10-20 03:09:09,383 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1066 to 1066. [2020-10-20 03:09:09,384 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1066 states. [2020-10-20 03:09:09,391 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1066 states to 1066 states and 3808 transitions. [2020-10-20 03:09:09,391 INFO L78 Accepts]: Start accepts. Automaton has 1066 states and 3808 transitions. Word has length 11 [2020-10-20 03:09:09,392 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 03:09:09,392 INFO L481 AbstractCegarLoop]: Abstraction has 1066 states and 3808 transitions. [2020-10-20 03:09:09,392 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-20 03:09:09,392 INFO L276 IsEmpty]: Start isEmpty. Operand 1066 states and 3808 transitions. [2020-10-20 03:09:09,394 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-20 03:09:09,394 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 03:09:09,394 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 03:09:09,394 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-20 03:09:09,395 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-20 03:09:09,395 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 03:09:09,395 INFO L82 PathProgramCache]: Analyzing trace with hash -947021519, now seen corresponding path program 1 times [2020-10-20 03:09:09,396 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 03:09:09,396 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [383683253] [2020-10-20 03:09:09,396 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 03:09:09,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 03:09:09,469 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 03:09:09,469 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [383683253] [2020-10-20 03:09:09,470 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 03:09:09,470 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-20 03:09:09,470 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1777734493] [2020-10-20 03:09:09,470 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-20 03:09:09,471 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 03:09:09,471 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-20 03:09:09,471 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-20 03:09:09,471 INFO L87 Difference]: Start difference. First operand 1066 states and 3808 transitions. Second operand 4 states. [2020-10-20 03:09:09,503 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 03:09:09,504 INFO L93 Difference]: Finished difference Result 1162 states and 4016 transitions. [2020-10-20 03:09:09,504 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-20 03:09:09,505 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 12 [2020-10-20 03:09:09,505 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 03:09:09,513 INFO L225 Difference]: With dead ends: 1162 [2020-10-20 03:09:09,514 INFO L226 Difference]: Without dead ends: 970 [2020-10-20 03:09:09,514 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-20 03:09:09,520 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 970 states. [2020-10-20 03:09:09,545 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 970 to 970. [2020-10-20 03:09:09,546 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 970 states. [2020-10-20 03:09:09,571 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 970 states to 970 states and 3408 transitions. [2020-10-20 03:09:09,572 INFO L78 Accepts]: Start accepts. Automaton has 970 states and 3408 transitions. Word has length 12 [2020-10-20 03:09:09,572 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 03:09:09,572 INFO L481 AbstractCegarLoop]: Abstraction has 970 states and 3408 transitions. [2020-10-20 03:09:09,572 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-20 03:09:09,572 INFO L276 IsEmpty]: Start isEmpty. Operand 970 states and 3408 transitions. [2020-10-20 03:09:09,574 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-20 03:09:09,574 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 03:09:09,574 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 03:09:09,574 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-20 03:09:09,575 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-20 03:09:09,575 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 03:09:09,575 INFO L82 PathProgramCache]: Analyzing trace with hash 639493830, now seen corresponding path program 1 times [2020-10-20 03:09:09,575 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 03:09:09,576 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [414008690] [2020-10-20 03:09:09,576 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 03:09:09,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 03:09:09,700 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 03:09:09,701 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [414008690] [2020-10-20 03:09:09,701 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 03:09:09,701 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-20 03:09:09,701 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [275944026] [2020-10-20 03:09:09,702 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-20 03:09:09,702 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 03:09:09,702 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-20 03:09:09,703 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-20 03:09:09,703 INFO L87 Difference]: Start difference. First operand 970 states and 3408 transitions. Second operand 5 states. [2020-10-20 03:09:09,769 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 03:09:09,769 INFO L93 Difference]: Finished difference Result 1162 states and 3980 transitions. [2020-10-20 03:09:09,769 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-20 03:09:09,769 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 13 [2020-10-20 03:09:09,770 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 03:09:09,774 INFO L225 Difference]: With dead ends: 1162 [2020-10-20 03:09:09,774 INFO L226 Difference]: Without dead ends: 508 [2020-10-20 03:09:09,775 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-10-20 03:09:09,778 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 508 states. [2020-10-20 03:09:09,791 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 508 to 508. [2020-10-20 03:09:09,791 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 508 states. [2020-10-20 03:09:09,794 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 508 states to 508 states and 1638 transitions. [2020-10-20 03:09:09,794 INFO L78 Accepts]: Start accepts. Automaton has 508 states and 1638 transitions. Word has length 13 [2020-10-20 03:09:09,794 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 03:09:09,794 INFO L481 AbstractCegarLoop]: Abstraction has 508 states and 1638 transitions. [2020-10-20 03:09:09,794 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-20 03:09:09,795 INFO L276 IsEmpty]: Start isEmpty. Operand 508 states and 1638 transitions. [2020-10-20 03:09:09,796 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-20 03:09:09,796 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 03:09:09,796 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 03:09:09,799 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-20 03:09:09,800 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-20 03:09:09,800 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 03:09:09,800 INFO L82 PathProgramCache]: Analyzing trace with hash 380154805, now seen corresponding path program 1 times [2020-10-20 03:09:09,801 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 03:09:09,801 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1406171998] [2020-10-20 03:09:09,801 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 03:09:09,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 03:09:09,884 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 03:09:09,885 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1406171998] [2020-10-20 03:09:09,888 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 03:09:09,888 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-20 03:09:09,888 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [613987150] [2020-10-20 03:09:09,889 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-20 03:09:09,889 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 03:09:09,889 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-20 03:09:09,889 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-20 03:09:09,890 INFO L87 Difference]: Start difference. First operand 508 states and 1638 transitions. Second operand 4 states. [2020-10-20 03:09:09,915 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 03:09:09,915 INFO L93 Difference]: Finished difference Result 544 states and 1704 transitions. [2020-10-20 03:09:09,915 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-20 03:09:09,916 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 15 [2020-10-20 03:09:09,916 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 03:09:09,920 INFO L225 Difference]: With dead ends: 544 [2020-10-20 03:09:09,920 INFO L226 Difference]: Without dead ends: 472 [2020-10-20 03:09:09,920 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-20 03:09:09,923 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 472 states. [2020-10-20 03:09:09,950 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 472 to 472. [2020-10-20 03:09:09,950 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 472 states. [2020-10-20 03:09:09,952 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 472 states to 472 states and 1500 transitions. [2020-10-20 03:09:09,952 INFO L78 Accepts]: Start accepts. Automaton has 472 states and 1500 transitions. Word has length 15 [2020-10-20 03:09:09,953 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 03:09:09,953 INFO L481 AbstractCegarLoop]: Abstraction has 472 states and 1500 transitions. [2020-10-20 03:09:09,953 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-20 03:09:09,953 INFO L276 IsEmpty]: Start isEmpty. Operand 472 states and 1500 transitions. [2020-10-20 03:09:09,954 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-10-20 03:09:09,954 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 03:09:09,955 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 03:09:09,955 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-20 03:09:09,955 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-20 03:09:09,955 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 03:09:09,955 INFO L82 PathProgramCache]: Analyzing trace with hash -2067323682, now seen corresponding path program 1 times [2020-10-20 03:09:09,956 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 03:09:09,956 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [469713313] [2020-10-20 03:09:09,956 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 03:09:09,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 03:09:10,002 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 03:09:10,003 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [469713313] [2020-10-20 03:09:10,003 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 03:09:10,003 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-20 03:09:10,003 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1081632811] [2020-10-20 03:09:10,004 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-20 03:09:10,004 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 03:09:10,004 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-20 03:09:10,005 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-20 03:09:10,005 INFO L87 Difference]: Start difference. First operand 472 states and 1500 transitions. Second operand 5 states. [2020-10-20 03:09:10,053 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 03:09:10,054 INFO L93 Difference]: Finished difference Result 586 states and 1831 transitions. [2020-10-20 03:09:10,054 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-20 03:09:10,054 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 16 [2020-10-20 03:09:10,054 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 03:09:10,056 INFO L225 Difference]: With dead ends: 586 [2020-10-20 03:09:10,057 INFO L226 Difference]: Without dead ends: 262 [2020-10-20 03:09:10,057 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-10-20 03:09:10,059 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 262 states. [2020-10-20 03:09:10,065 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 262 to 262. [2020-10-20 03:09:10,065 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 262 states. [2020-10-20 03:09:10,066 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 262 states to 262 states and 768 transitions. [2020-10-20 03:09:10,067 INFO L78 Accepts]: Start accepts. Automaton has 262 states and 768 transitions. Word has length 16 [2020-10-20 03:09:10,067 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 03:09:10,067 INFO L481 AbstractCegarLoop]: Abstraction has 262 states and 768 transitions. [2020-10-20 03:09:10,067 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-20 03:09:10,067 INFO L276 IsEmpty]: Start isEmpty. Operand 262 states and 768 transitions. [2020-10-20 03:09:10,068 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-10-20 03:09:10,068 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 03:09:10,068 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 03:09:10,068 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-20 03:09:10,069 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-20 03:09:10,069 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 03:09:10,069 INFO L82 PathProgramCache]: Analyzing trace with hash 253681578, now seen corresponding path program 1 times [2020-10-20 03:09:10,069 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 03:09:10,069 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1342382887] [2020-10-20 03:09:10,070 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 03:09:10,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 03:09:10,112 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 03:09:10,112 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1342382887] [2020-10-20 03:09:10,113 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 03:09:10,113 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-20 03:09:10,113 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [796766880] [2020-10-20 03:09:10,113 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-20 03:09:10,114 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 03:09:10,114 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-20 03:09:10,114 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-20 03:09:10,114 INFO L87 Difference]: Start difference. First operand 262 states and 768 transitions. Second operand 5 states. [2020-10-20 03:09:10,156 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 03:09:10,156 INFO L93 Difference]: Finished difference Result 358 states and 1024 transitions. [2020-10-20 03:09:10,156 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-20 03:09:10,157 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 17 [2020-10-20 03:09:10,157 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 03:09:10,158 INFO L225 Difference]: With dead ends: 358 [2020-10-20 03:09:10,158 INFO L226 Difference]: Without dead ends: 154 [2020-10-20 03:09:10,159 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-10-20 03:09:10,160 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 154 states. [2020-10-20 03:09:10,163 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 154 to 154. [2020-10-20 03:09:10,163 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 154 states. [2020-10-20 03:09:10,164 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 154 states to 154 states and 410 transitions. [2020-10-20 03:09:10,164 INFO L78 Accepts]: Start accepts. Automaton has 154 states and 410 transitions. Word has length 17 [2020-10-20 03:09:10,164 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 03:09:10,165 INFO L481 AbstractCegarLoop]: Abstraction has 154 states and 410 transitions. [2020-10-20 03:09:10,165 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-20 03:09:10,165 INFO L276 IsEmpty]: Start isEmpty. Operand 154 states and 410 transitions. [2020-10-20 03:09:10,165 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-10-20 03:09:10,165 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 03:09:10,166 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 03:09:10,166 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-20 03:09:10,166 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-20 03:09:10,166 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 03:09:10,166 INFO L82 PathProgramCache]: Analyzing trace with hash -2117772472, now seen corresponding path program 1 times [2020-10-20 03:09:10,167 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 03:09:10,167 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [51246071] [2020-10-20 03:09:10,167 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 03:09:10,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 03:09:10,222 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 03:09:10,222 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [51246071] [2020-10-20 03:09:10,223 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 03:09:10,223 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-20 03:09:10,223 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1943155938] [2020-10-20 03:09:10,223 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-20 03:09:10,224 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 03:09:10,224 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-20 03:09:10,224 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-20 03:09:10,225 INFO L87 Difference]: Start difference. First operand 154 states and 410 transitions. Second operand 5 states. [2020-10-20 03:09:10,259 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 03:09:10,260 INFO L93 Difference]: Finished difference Result 130 states and 334 transitions. [2020-10-20 03:09:10,260 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-20 03:09:10,261 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 18 [2020-10-20 03:09:10,261 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 03:09:10,261 INFO L225 Difference]: With dead ends: 130 [2020-10-20 03:09:10,261 INFO L226 Difference]: Without dead ends: 0 [2020-10-20 03:09:10,262 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-10-20 03:09:10,262 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-10-20 03:09:10,262 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-10-20 03:09:10,263 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-10-20 03:09:10,263 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-10-20 03:09:10,263 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 18 [2020-10-20 03:09:10,263 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 03:09:10,263 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-20 03:09:10,263 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-20 03:09:10,263 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-10-20 03:09:10,264 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-10-20 03:09:10,264 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-20 03:09:10,268 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.10 03:09:10 BasicIcfg [2020-10-20 03:09:10,268 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-20 03:09:10,269 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-10-20 03:09:10,269 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-10-20 03:09:10,269 INFO L275 PluginConnector]: Witness Printer initialized [2020-10-20 03:09:10,270 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 03:09:05" (3/4) ... [2020-10-20 03:09:10,274 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-10-20 03:09:10,281 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P0 [2020-10-20 03:09:10,282 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P1 [2020-10-20 03:09:10,282 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P2 [2020-10-20 03:09:10,282 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P3 [2020-10-20 03:09:10,288 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 16 nodes and edges [2020-10-20 03:09:10,288 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2020-10-20 03:09:10,289 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-10-20 03:09:10,289 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-10-20 03:09:10,340 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2020-10-20 03:09:10,340 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-10-20 03:09:10,342 INFO L168 Benchmark]: Toolchain (without parser) took 5848.39 ms. Allocated memory was 34.6 MB in the beginning and 99.6 MB in the end (delta: 65.0 MB). Free memory was 14.3 MB in the beginning and 51.1 MB in the end (delta: -36.8 MB). Peak memory consumption was 28.3 MB. Max. memory is 14.3 GB. [2020-10-20 03:09:10,343 INFO L168 Benchmark]: CDTParser took 0.90 ms. Allocated memory is still 33.6 MB. Free memory was 10.8 MB in the beginning and 10.7 MB in the end (delta: 43.7 kB). Peak memory consumption was 43.7 kB. Max. memory is 14.3 GB. [2020-10-20 03:09:10,344 INFO L168 Benchmark]: CACSL2BoogieTranslator took 621.67 ms. Allocated memory was 34.6 MB in the beginning and 43.0 MB in the end (delta: 8.4 MB). Free memory was 13.5 MB in the beginning and 16.4 MB in the end (delta: -2.9 MB). Peak memory consumption was 12.9 MB. Max. memory is 14.3 GB. [2020-10-20 03:09:10,344 INFO L168 Benchmark]: Boogie Procedure Inliner took 51.09 ms. Allocated memory is still 43.0 MB. Free memory was 16.4 MB in the beginning and 14.2 MB in the end (delta: 2.2 MB). Peak memory consumption was 2.2 MB. Max. memory is 14.3 GB. [2020-10-20 03:09:10,345 INFO L168 Benchmark]: Boogie Preprocessor took 30.34 ms. Allocated memory is still 43.0 MB. Free memory was 14.2 MB in the beginning and 12.4 MB in the end (delta: 1.8 MB). Peak memory consumption was 1.8 MB. Max. memory is 14.3 GB. [2020-10-20 03:09:10,346 INFO L168 Benchmark]: RCFGBuilder took 481.17 ms. Allocated memory was 43.0 MB in the beginning and 45.6 MB in the end (delta: 2.6 MB). Free memory was 12.4 MB in the beginning and 21.3 MB in the end (delta: -9.0 MB). Peak memory consumption was 6.5 MB. Max. memory is 14.3 GB. [2020-10-20 03:09:10,346 INFO L168 Benchmark]: TraceAbstraction took 4575.42 ms. Allocated memory was 45.6 MB in the beginning and 99.6 MB in the end (delta: 54.0 MB). Free memory was 20.7 MB in the beginning and 54.7 MB in the end (delta: -34.0 MB). Peak memory consumption was 20.0 MB. Max. memory is 14.3 GB. [2020-10-20 03:09:10,347 INFO L168 Benchmark]: Witness Printer took 71.43 ms. Allocated memory is still 99.6 MB. Free memory was 54.7 MB in the beginning and 51.1 MB in the end (delta: 3.6 MB). Peak memory consumption was 3.6 MB. Max. memory is 14.3 GB. [2020-10-20 03:09:10,353 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.90 ms. Allocated memory is still 33.6 MB. Free memory was 10.8 MB in the beginning and 10.7 MB in the end (delta: 43.7 kB). Peak memory consumption was 43.7 kB. Max. memory is 14.3 GB. * CACSL2BoogieTranslator took 621.67 ms. Allocated memory was 34.6 MB in the beginning and 43.0 MB in the end (delta: 8.4 MB). Free memory was 13.5 MB in the beginning and 16.4 MB in the end (delta: -2.9 MB). Peak memory consumption was 12.9 MB. Max. memory is 14.3 GB. * Boogie Procedure Inliner took 51.09 ms. Allocated memory is still 43.0 MB. Free memory was 16.4 MB in the beginning and 14.2 MB in the end (delta: 2.2 MB). Peak memory consumption was 2.2 MB. Max. memory is 14.3 GB. * Boogie Preprocessor took 30.34 ms. Allocated memory is still 43.0 MB. Free memory was 14.2 MB in the beginning and 12.4 MB in the end (delta: 1.8 MB). Peak memory consumption was 1.8 MB. Max. memory is 14.3 GB. * RCFGBuilder took 481.17 ms. Allocated memory was 43.0 MB in the beginning and 45.6 MB in the end (delta: 2.6 MB). Free memory was 12.4 MB in the beginning and 21.3 MB in the end (delta: -9.0 MB). Peak memory consumption was 6.5 MB. Max. memory is 14.3 GB. * TraceAbstraction took 4575.42 ms. Allocated memory was 45.6 MB in the beginning and 99.6 MB in the end (delta: 54.0 MB). Free memory was 20.7 MB in the beginning and 54.7 MB in the end (delta: -34.0 MB). Peak memory consumption was 20.0 MB. Max. memory is 14.3 GB. * Witness Printer took 71.43 ms. Allocated memory is still 99.6 MB. Free memory was 54.7 MB in the beginning and 51.1 MB in the end (delta: 3.6 MB). Peak memory consumption was 3.6 MB. Max. memory is 14.3 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks 1644 VarBasedMoverChecksPositive, 61 VarBasedMoverChecksNegative, 12 SemBasedMoverChecksPositive, 49 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.3s, 172 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 2.3s, 105 PlacesBefore, 41 PlacesAfterwards, 95 TransitionsBefore, 29 TransitionsAfterwards, 2256 CoEnabledTransitionPairs, 5 FixpointIterations, 21 TrivialSequentialCompositions, 44 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 13 ConcurrentYvCompositions, 2 ChoiceCompositions, 80 TotalNumberOfCompositions, 4418 MoverChecksTotal - PositiveResult [Line: 17]: 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 5 procedures, 93 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 4.4s, OverallIterations: 8, TraceHistogramMax: 1, AutomataDifference: 0.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 2.4s, HoareTripleCheckerStatistics: 232 SDtfs, 257 SDslu, 326 SDs, 0 SdLazy, 57 SolverSat, 8 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 35 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1450occurred 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: 0.4s AutomataMinimizationTime, 8 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 112 NumberOfCodeBlocks, 112 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 104 ConstructedInterpolants, 0 QuantifiedInterpolants, 4169 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 8 InterpolantComputations, 8 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...