./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/recursive-simple/id2_b3_o2.c --full-output -ea --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 8bd4bc60 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx12G -Xms1G -ea -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/recursive-simple/id2_b3_o2.c -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 a033d09eab07f8bc6e49bb4301ebd6c89110f535 .................................................................................................................................................................................................................................................. Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx12G -Xms1G -ea -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/recursive-simple/id2_b3_o2.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.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 a033d09eab07f8bc6e49bb4301ebd6c89110f535 ..................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: ERROR: ExceptionOrErrorResult: AssertionError: callstack broken after backtranslation by InlinerBacktranslator --- Real Ultimate output --- This is Ultimate 0.1.25-8bd4bc6 [2020-07-28 19:11:21,912 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-28 19:11:21,915 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-28 19:11:21,934 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-28 19:11:21,935 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-28 19:11:21,937 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-28 19:11:21,939 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-28 19:11:21,953 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-28 19:11:21,955 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-28 19:11:21,957 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-28 19:11:21,959 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-28 19:11:21,961 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-28 19:11:21,961 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-28 19:11:21,966 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-28 19:11:21,968 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-28 19:11:21,969 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-28 19:11:21,972 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-28 19:11:21,974 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-28 19:11:21,977 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-28 19:11:21,982 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-28 19:11:21,988 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-28 19:11:21,992 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-28 19:11:21,993 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-28 19:11:21,994 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-28 19:11:21,996 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-07-28 19:11:21,997 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-07-28 19:11:21,997 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-07-28 19:11:21,998 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-07-28 19:11:21,999 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-07-28 19:11:22,000 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-07-28 19:11:22,000 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-07-28 19:11:22,001 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-07-28 19:11:22,002 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-07-28 19:11:22,003 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-07-28 19:11:22,004 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-07-28 19:11:22,004 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-07-28 19:11:22,005 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-07-28 19:11:22,005 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-07-28 19:11:22,006 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-28 19:11:22,007 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-28 19:11:22,007 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-28 19:11:22,008 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2020-07-28 19:11:22,023 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-28 19:11:22,024 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-28 19:11:22,025 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-28 19:11:22,026 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-28 19:11:22,026 INFO L138 SettingsManager]: * Use SBE=true [2020-07-28 19:11:22,027 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-28 19:11:22,027 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-28 19:11:22,027 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-28 19:11:22,027 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-28 19:11:22,028 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-28 19:11:22,028 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-28 19:11:22,028 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-28 19:11:22,029 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-28 19:11:22,029 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-28 19:11:22,029 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-28 19:11:22,030 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-28 19:11:22,030 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-28 19:11:22,030 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-28 19:11:22,030 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-28 19:11:22,031 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-28 19:11:22,031 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-28 19:11:22,031 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-28 19:11:22,032 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-28 19:11:22,032 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-07-28 19:11:22,032 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-07-28 19:11:22,033 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-07-28 19:11:22,033 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-28 19:11:22,033 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-28 19:11:22,033 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-07-28 19:11:22,034 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 -> a033d09eab07f8bc6e49bb4301ebd6c89110f535 [2020-07-28 19:11:22,331 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-28 19:11:22,354 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-28 19:11:22,358 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-28 19:11:22,359 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-28 19:11:22,360 INFO L275 PluginConnector]: CDTParser initialized [2020-07-28 19:11:22,361 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/recursive-simple/id2_b3_o2.c [2020-07-28 19:11:22,439 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8b21a9022/985c92abfebe45cca24071a8b71c1af6/FLAGf4edd74e9 [2020-07-28 19:11:22,913 INFO L306 CDTParser]: Found 1 translation units. [2020-07-28 19:11:22,914 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/recursive-simple/id2_b3_o2.c [2020-07-28 19:11:22,921 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8b21a9022/985c92abfebe45cca24071a8b71c1af6/FLAGf4edd74e9 [2020-07-28 19:11:23,322 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8b21a9022/985c92abfebe45cca24071a8b71c1af6 [2020-07-28 19:11:23,326 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-28 19:11:23,330 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-07-28 19:11:23,331 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-28 19:11:23,332 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-28 19:11:23,335 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-28 19:11:23,337 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.07 07:11:23" (1/1) ... [2020-07-28 19:11:23,340 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@9d9ae94 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 07:11:23, skipping insertion in model container [2020-07-28 19:11:23,340 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.07 07:11:23" (1/1) ... [2020-07-28 19:11:23,348 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-28 19:11:23,369 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-28 19:11:23,536 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-28 19:11:23,541 INFO L203 MainTranslator]: Completed pre-run [2020-07-28 19:11:23,560 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-28 19:11:23,574 INFO L208 MainTranslator]: Completed translation [2020-07-28 19:11:23,575 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 07:11:23 WrapperNode [2020-07-28 19:11:23,575 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-28 19:11:23,576 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-07-28 19:11:23,576 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-07-28 19:11:23,576 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-07-28 19:11:23,585 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 07:11:23" (1/1) ... [2020-07-28 19:11:23,590 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 07:11:23" (1/1) ... [2020-07-28 19:11:23,666 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-07-28 19:11:23,667 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-28 19:11:23,667 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-28 19:11:23,667 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-28 19:11:23,677 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 07:11:23" (1/1) ... [2020-07-28 19:11:23,678 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 07:11:23" (1/1) ... [2020-07-28 19:11:23,678 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 07:11:23" (1/1) ... [2020-07-28 19:11:23,679 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 07:11:23" (1/1) ... [2020-07-28 19:11:23,682 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 07:11:23" (1/1) ... [2020-07-28 19:11:23,685 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 07:11:23" (1/1) ... [2020-07-28 19:11:23,687 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 07:11:23" (1/1) ... [2020-07-28 19:11:23,688 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-28 19:11:23,689 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-28 19:11:23,689 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-28 19:11:23,689 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-28 19:11:23,690 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 07:11:23" (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 [2020-07-28 19:11:23,753 INFO L130 BoogieDeclarations]: Found specification of procedure id2 [2020-07-28 19:11:23,754 INFO L138 BoogieDeclarations]: Found implementation of procedure id2 [2020-07-28 19:11:23,754 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-28 19:11:23,754 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-28 19:11:23,755 INFO L130 BoogieDeclarations]: Found specification of procedure id [2020-07-28 19:11:23,755 INFO L138 BoogieDeclarations]: Found implementation of procedure id [2020-07-28 19:11:24,044 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-28 19:11:24,044 INFO L295 CfgBuilder]: Removed 4 assume(true) statements. [2020-07-28 19:11:24,049 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.07 07:11:24 BoogieIcfgContainer [2020-07-28 19:11:24,049 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-28 19:11:24,051 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-28 19:11:24,051 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-28 19:11:24,054 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-28 19:11:24,055 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.07 07:11:23" (1/3) ... [2020-07-28 19:11:24,056 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3f48573c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.07 07:11:24, skipping insertion in model container [2020-07-28 19:11:24,056 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 07:11:23" (2/3) ... [2020-07-28 19:11:24,056 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3f48573c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.07 07:11:24, skipping insertion in model container [2020-07-28 19:11:24,057 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.07 07:11:24" (3/3) ... [2020-07-28 19:11:24,059 INFO L109 eAbstractionObserver]: Analyzing ICFG id2_b3_o2.c [2020-07-28 19:11:24,071 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-07-28 19:11:24,080 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-28 19:11:24,096 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-28 19:11:24,126 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-28 19:11:24,127 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-28 19:11:24,127 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-07-28 19:11:24,127 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-28 19:11:24,127 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-28 19:11:24,128 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-28 19:11:24,128 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-28 19:11:24,128 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-28 19:11:24,150 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states. [2020-07-28 19:11:24,165 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-07-28 19:11:24,166 INFO L414 BasicCegarLoop]: Found error trace [2020-07-28 19:11:24,167 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-28 19:11:24,168 INFO L427 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-28 19:11:24,174 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-28 19:11:24,175 INFO L82 PathProgramCache]: Analyzing trace with hash -394807891, now seen corresponding path program 1 times [2020-07-28 19:11:24,187 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-28 19:11:24,188 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1164380201] [2020-07-28 19:11:24,188 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-28 19:11:24,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-28 19:11:24,302 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-07-28 19:11:24,303 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.AssertionError at de.uni_freiburg.informatik.ultimate.smtinterpol.proof.FixResolutionProof.fix(FixResolutionProof.java:191) at de.uni_freiburg.informatik.ultimate.smtinterpol.proof.ProofTermGenerator.convert(ProofTermGenerator.java:150) at de.uni_freiburg.informatik.ultimate.smtinterpol.smtlib2.SMTInterpol.getProof(SMTInterpol.java:797) at de.uni_freiburg.informatik.ultimate.logic.NoopScript.getInterpolants(NoopScript.java:392) at de.uni_freiburg.informatik.ultimate.logic.NoopScript.getInterpolants(NoopScript.java:386) at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.getInterpolants(WrapperScript.java:337) at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.getInterpolants(WrapperScript.java:337) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.ManagedScript.getInterpolants(ManagedScript.java:191) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.NestedInterpolantsBuilder.computeCraigInterpolants(NestedInterpolantsBuilder.java:285) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.NestedInterpolantsBuilder.(NestedInterpolantsBuilder.java:166) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.InterpolatingTraceCheckCraig.computeInterpolantsRecursive(InterpolatingTraceCheckCraig.java:326) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.InterpolatingTraceCheckCraig.computeInterpolants(InterpolatingTraceCheckCraig.java:228) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.InterpolatingTraceCheckCraig.(InterpolatingTraceCheckCraig.java:97) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleCraig.construct(IpTcStrategyModuleCraig.java:79) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleCraig.construct(IpTcStrategyModuleCraig.java:1) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.isCorrect(IpTcStrategyModuleBase.java:57) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.checkFeasibility(AutomatonFreeRefinementEngine.java:242) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:166) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:75) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:508) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterateInternal(AbstractCegarLoop.java:436) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:370) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarLoopResult.iterate(CegarLoopResult.java:142) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.iterateNew(TraceAbstractionStarter.java:334) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:175) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:127) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:120) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:317) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:55) [2020-07-28 19:11:24,312 INFO L168 Benchmark]: Toolchain (without parser) took 982.64 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 141.6 MB). Free memory was 957.5 MB in the beginning and 1.1 GB in the end (delta: -136.5 MB). Peak memory consumption was 5.1 MB. Max. memory is 11.5 GB. [2020-07-28 19:11:24,313 INFO L168 Benchmark]: CDTParser took 0.87 ms. Allocated memory is still 1.0 GB. Free memory is still 987.1 MB. There was no memory consumed. Max. memory is 11.5 GB. [2020-07-28 19:11:24,314 INFO L168 Benchmark]: CACSL2BoogieTranslator took 244.23 ms. Allocated memory is still 1.0 GB. Free memory was 957.5 MB in the beginning and 946.8 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2020-07-28 19:11:24,315 INFO L168 Benchmark]: Boogie Procedure Inliner took 90.68 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 141.6 MB). Free memory was 946.8 MB in the beginning and 1.1 GB in the end (delta: -191.2 MB). Peak memory consumption was 9.7 MB. Max. memory is 11.5 GB. [2020-07-28 19:11:24,316 INFO L168 Benchmark]: Boogie Preprocessor took 21.80 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. [2020-07-28 19:11:24,317 INFO L168 Benchmark]: RCFGBuilder took 360.34 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: 30.8 MB). Peak memory consumption was 30.8 MB. Max. memory is 11.5 GB. [2020-07-28 19:11:24,318 INFO L168 Benchmark]: TraceAbstraction took 257.40 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: 13.2 MB). Peak memory consumption was 13.2 MB. Max. memory is 11.5 GB. [2020-07-28 19:11:24,322 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - AssertionsEnabledResult: Assertions are enabled Assertions are enabled - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.87 ms. Allocated memory is still 1.0 GB. Free memory is still 987.1 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 244.23 ms. Allocated memory is still 1.0 GB. Free memory was 957.5 MB in the beginning and 946.8 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 90.68 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 141.6 MB). Free memory was 946.8 MB in the beginning and 1.1 GB in the end (delta: -191.2 MB). Peak memory consumption was 9.7 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 21.80 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 360.34 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: 30.8 MB). Peak memory consumption was 30.8 MB. Max. memory is 11.5 GB. * TraceAbstraction took 257.40 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: 13.2 MB). Peak memory consumption was 13.2 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: AssertionError: null de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: AssertionError: null: de.uni_freiburg.informatik.ultimate.smtinterpol.proof.FixResolutionProof.fix(FixResolutionProof.java:191) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request... ### Bit-precise run ### This is Ultimate 0.1.25-8bd4bc6 [2020-07-28 19:11:26,290 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-28 19:11:26,293 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-28 19:11:26,307 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-28 19:11:26,307 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-28 19:11:26,309 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-28 19:11:26,310 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-28 19:11:26,312 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-28 19:11:26,315 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-28 19:11:26,316 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-28 19:11:26,317 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-28 19:11:26,318 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-28 19:11:26,319 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-28 19:11:26,320 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-28 19:11:26,321 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-28 19:11:26,323 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-28 19:11:26,324 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-28 19:11:26,325 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-28 19:11:26,327 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-28 19:11:26,330 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-28 19:11:26,331 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-28 19:11:26,336 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-28 19:11:26,338 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-28 19:11:26,340 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-28 19:11:26,345 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-07-28 19:11:26,348 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-07-28 19:11:26,348 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-07-28 19:11:26,350 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-07-28 19:11:26,351 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-07-28 19:11:26,353 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-07-28 19:11:26,353 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-07-28 19:11:26,354 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-07-28 19:11:26,356 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-07-28 19:11:26,358 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-07-28 19:11:26,363 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-07-28 19:11:26,363 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-07-28 19:11:26,364 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-07-28 19:11:26,364 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-07-28 19:11:26,365 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-28 19:11:26,366 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-28 19:11:26,368 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-28 19:11:26,369 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2020-07-28 19:11:26,405 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-28 19:11:26,409 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-28 19:11:26,411 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-28 19:11:26,411 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-28 19:11:26,414 INFO L138 SettingsManager]: * Use SBE=true [2020-07-28 19:11:26,415 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-28 19:11:26,415 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-28 19:11:26,415 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-28 19:11:26,416 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-28 19:11:26,416 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-28 19:11:26,416 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-28 19:11:26,416 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-28 19:11:26,417 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2020-07-28 19:11:26,419 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2020-07-28 19:11:26,420 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-28 19:11:26,420 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-28 19:11:26,420 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-28 19:11:26,420 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-28 19:11:26,421 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-28 19:11:26,421 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-28 19:11:26,421 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-28 19:11:26,422 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-28 19:11:26,423 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-28 19:11:26,424 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-28 19:11:26,424 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-07-28 19:11:26,425 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-07-28 19:11:26,425 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2020-07-28 19:11:26,426 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2020-07-28 19:11:26,426 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-28 19:11:26,427 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-07-28 19:11:26,427 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-07-28 19:11:26,427 INFO L138 SettingsManager]: * Logic for external solver=AUFBV 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 -> a033d09eab07f8bc6e49bb4301ebd6c89110f535 [2020-07-28 19:11:26,822 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-28 19:11:26,841 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-28 19:11:26,846 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-28 19:11:26,848 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-28 19:11:26,849 INFO L275 PluginConnector]: CDTParser initialized [2020-07-28 19:11:26,850 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/recursive-simple/id2_b3_o2.c [2020-07-28 19:11:26,929 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fceb47db8/572ec295df724c5c8054c4c80dc71aac/FLAG5544d4fe1 [2020-07-28 19:11:27,360 INFO L306 CDTParser]: Found 1 translation units. [2020-07-28 19:11:27,361 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/recursive-simple/id2_b3_o2.c [2020-07-28 19:11:27,366 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fceb47db8/572ec295df724c5c8054c4c80dc71aac/FLAG5544d4fe1 [2020-07-28 19:11:27,746 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fceb47db8/572ec295df724c5c8054c4c80dc71aac [2020-07-28 19:11:27,750 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-28 19:11:27,753 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-07-28 19:11:27,756 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-28 19:11:27,756 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-28 19:11:27,759 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-28 19:11:27,761 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.07 07:11:27" (1/1) ... [2020-07-28 19:11:27,764 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@195fc7c7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 07:11:27, skipping insertion in model container [2020-07-28 19:11:27,764 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.07 07:11:27" (1/1) ... [2020-07-28 19:11:27,772 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-28 19:11:27,788 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-28 19:11:28,023 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-28 19:11:28,032 INFO L203 MainTranslator]: Completed pre-run [2020-07-28 19:11:28,060 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-28 19:11:28,077 INFO L208 MainTranslator]: Completed translation [2020-07-28 19:11:28,078 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 07:11:28 WrapperNode [2020-07-28 19:11:28,078 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-28 19:11:28,080 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-07-28 19:11:28,080 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-07-28 19:11:28,082 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-07-28 19:11:28,093 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 07:11:28" (1/1) ... [2020-07-28 19:11:28,100 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 07:11:28" (1/1) ... [2020-07-28 19:11:28,175 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-07-28 19:11:28,176 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-28 19:11:28,176 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-28 19:11:28,176 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-28 19:11:28,186 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 07:11:28" (1/1) ... [2020-07-28 19:11:28,186 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 07:11:28" (1/1) ... [2020-07-28 19:11:28,188 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 07:11:28" (1/1) ... [2020-07-28 19:11:28,188 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 07:11:28" (1/1) ... [2020-07-28 19:11:28,193 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 07:11:28" (1/1) ... [2020-07-28 19:11:28,196 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 07:11:28" (1/1) ... [2020-07-28 19:11:28,197 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 07:11:28" (1/1) ... [2020-07-28 19:11:28,199 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-28 19:11:28,199 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-28 19:11:28,199 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-28 19:11:28,200 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-28 19:11:28,200 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 07:11:28" (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 [2020-07-28 19:11:28,260 INFO L130 BoogieDeclarations]: Found specification of procedure id2 [2020-07-28 19:11:28,261 INFO L138 BoogieDeclarations]: Found implementation of procedure id2 [2020-07-28 19:11:28,261 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-28 19:11:28,261 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-28 19:11:28,261 INFO L130 BoogieDeclarations]: Found specification of procedure id [2020-07-28 19:11:28,262 INFO L138 BoogieDeclarations]: Found implementation of procedure id [2020-07-28 19:11:28,567 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-28 19:11:28,567 INFO L295 CfgBuilder]: Removed 4 assume(true) statements. [2020-07-28 19:11:28,572 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.07 07:11:28 BoogieIcfgContainer [2020-07-28 19:11:28,572 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-28 19:11:28,573 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-28 19:11:28,574 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-28 19:11:28,578 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-28 19:11:28,578 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.07 07:11:27" (1/3) ... [2020-07-28 19:11:28,579 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4b765ed5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.07 07:11:28, skipping insertion in model container [2020-07-28 19:11:28,579 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 07:11:28" (2/3) ... [2020-07-28 19:11:28,590 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4b765ed5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.07 07:11:28, skipping insertion in model container [2020-07-28 19:11:28,590 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.07 07:11:28" (3/3) ... [2020-07-28 19:11:28,592 INFO L109 eAbstractionObserver]: Analyzing ICFG id2_b3_o2.c [2020-07-28 19:11:28,603 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-07-28 19:11:28,611 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-28 19:11:28,624 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-28 19:11:28,648 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-28 19:11:28,648 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-28 19:11:28,648 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-07-28 19:11:28,648 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-28 19:11:28,648 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-28 19:11:28,649 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-28 19:11:28,649 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-28 19:11:28,649 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-28 19:11:28,668 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states. [2020-07-28 19:11:28,674 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-07-28 19:11:28,674 INFO L414 BasicCegarLoop]: Found error trace [2020-07-28 19:11:28,675 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-28 19:11:28,676 INFO L427 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-28 19:11:28,682 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-28 19:11:28,683 INFO L82 PathProgramCache]: Analyzing trace with hash -394807891, now seen corresponding path program 1 times [2020-07-28 19:11:28,700 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-07-28 19:11:28,701 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1757154618] [2020-07-28 19:11:28,702 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 2 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with mathsat -unsat_core_generation=3 [2020-07-28 19:11:28,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-28 19:11:28,766 INFO L263 TraceCheckSpWp]: Trace formula consists of 14 conjuncts, 4 conjunts are in the unsatisfiable core [2020-07-28 19:11:28,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-28 19:11:28,779 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-28 19:11:28,894 INFO L280 TraceCheckUtils]: 0: Hoare triple {26#true} havoc main_#res;havoc main_#t~nondet2, main_#t~ret3, main_~input~0, main_~result~0;main_~input~0 := main_#t~nondet2;havoc main_#t~nondet2; {26#true} is VALID [2020-07-28 19:11:28,894 INFO L263 TraceCheckUtils]: 1: Hoare triple {26#true} call main_#t~ret3 := id(main_~input~0); {26#true} is VALID [2020-07-28 19:11:28,895 INFO L280 TraceCheckUtils]: 2: Hoare triple {26#true} ~x := #in~x; {26#true} is VALID [2020-07-28 19:11:28,896 INFO L280 TraceCheckUtils]: 3: Hoare triple {26#true} assume 0bv32 == ~x;#res := 0bv32; {40#(= |id_#res| (_ bv0 32))} is VALID [2020-07-28 19:11:28,898 INFO L280 TraceCheckUtils]: 4: Hoare triple {40#(= |id_#res| (_ bv0 32))} assume true; {40#(= |id_#res| (_ bv0 32))} is VALID [2020-07-28 19:11:28,900 INFO L275 TraceCheckUtils]: 5: Hoare quadruple {40#(= |id_#res| (_ bv0 32))} {26#true} #42#return; {47#(= |ULTIMATE.start_main_#t~ret3| (_ bv0 32))} is VALID [2020-07-28 19:11:28,901 INFO L280 TraceCheckUtils]: 6: Hoare triple {47#(= |ULTIMATE.start_main_#t~ret3| (_ bv0 32))} main_~result~0 := main_#t~ret3;havoc main_#t~ret3; {51#(= (_ bv0 32) ULTIMATE.start_main_~result~0)} is VALID [2020-07-28 19:11:28,903 INFO L280 TraceCheckUtils]: 7: Hoare triple {51#(= (_ bv0 32) ULTIMATE.start_main_~result~0)} assume 2bv32 == main_~result~0; {27#false} is VALID [2020-07-28 19:11:28,903 INFO L280 TraceCheckUtils]: 8: Hoare triple {27#false} assume !false; {27#false} is VALID [2020-07-28 19:11:28,907 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-28 19:11:28,907 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-28 19:11:29,027 INFO L280 TraceCheckUtils]: 8: Hoare triple {27#false} assume !false; {27#false} is VALID [2020-07-28 19:11:29,029 INFO L280 TraceCheckUtils]: 7: Hoare triple {61#(not (= (_ bv2 32) ULTIMATE.start_main_~result~0))} assume 2bv32 == main_~result~0; {27#false} is VALID [2020-07-28 19:11:29,030 INFO L280 TraceCheckUtils]: 6: Hoare triple {65#(not (= (bvadd |ULTIMATE.start_main_#t~ret3| (_ bv4294967294 32)) (_ bv0 32)))} main_~result~0 := main_#t~ret3;havoc main_#t~ret3; {61#(not (= (_ bv2 32) ULTIMATE.start_main_~result~0))} is VALID [2020-07-28 19:11:29,033 INFO L275 TraceCheckUtils]: 5: Hoare quadruple {72#(not (= (bvadd |id_#res| (_ bv4294967294 32)) (_ bv0 32)))} {26#true} #42#return; {65#(not (= (bvadd |ULTIMATE.start_main_#t~ret3| (_ bv4294967294 32)) (_ bv0 32)))} is VALID [2020-07-28 19:11:29,036 INFO L280 TraceCheckUtils]: 4: Hoare triple {72#(not (= (bvadd |id_#res| (_ bv4294967294 32)) (_ bv0 32)))} assume true; {72#(not (= (bvadd |id_#res| (_ bv4294967294 32)) (_ bv0 32)))} is VALID [2020-07-28 19:11:29,038 INFO L280 TraceCheckUtils]: 3: Hoare triple {26#true} assume 0bv32 == ~x;#res := 0bv32; {72#(not (= (bvadd |id_#res| (_ bv4294967294 32)) (_ bv0 32)))} is VALID [2020-07-28 19:11:29,038 INFO L280 TraceCheckUtils]: 2: Hoare triple {26#true} ~x := #in~x; {26#true} is VALID [2020-07-28 19:11:29,039 INFO L263 TraceCheckUtils]: 1: Hoare triple {26#true} call main_#t~ret3 := id(main_~input~0); {26#true} is VALID [2020-07-28 19:11:29,039 INFO L280 TraceCheckUtils]: 0: Hoare triple {26#true} havoc main_#res;havoc main_#t~nondet2, main_#t~ret3, main_~input~0, main_~result~0;main_~input~0 := main_#t~nondet2;havoc main_#t~nondet2; {26#true} is VALID [2020-07-28 19:11:29,040 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-28 19:11:29,042 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1757154618] [2020-07-28 19:11:29,043 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-07-28 19:11:29,043 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 8 [2020-07-28 19:11:29,044 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2073971097] [2020-07-28 19:11:29,051 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 9 [2020-07-28 19:11:29,055 INFO L84 Accepts]: Finished accepts. word is accepted. [2020-07-28 19:11:29,059 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 8 states. [2020-07-28 19:11:29,093 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 14 edges. 14 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2020-07-28 19:11:29,093 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-07-28 19:11:29,093 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-07-28 19:11:29,103 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-07-28 19:11:29,104 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-07-28 19:11:29,107 INFO L87 Difference]: Start difference. First operand 23 states. Second operand 8 states. [2020-07-28 19:11:29,422 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-28 19:11:29,422 INFO L93 Difference]: Finished difference Result 39 states and 46 transitions. [2020-07-28 19:11:29,423 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-07-28 19:11:29,423 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 9 [2020-07-28 19:11:29,423 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-28 19:11:29,425 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2020-07-28 19:11:29,435 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 46 transitions. [2020-07-28 19:11:29,435 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2020-07-28 19:11:29,440 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 46 transitions. [2020-07-28 19:11:29,441 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 8 states and 46 transitions. [2020-07-28 19:11:29,526 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 46 edges. 46 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2020-07-28 19:11:29,539 INFO L225 Difference]: With dead ends: 39 [2020-07-28 19:11:29,539 INFO L226 Difference]: Without dead ends: 24 [2020-07-28 19:11:29,543 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-07-28 19:11:29,562 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2020-07-28 19:11:29,585 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 22. [2020-07-28 19:11:29,586 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2020-07-28 19:11:29,587 INFO L82 GeneralOperation]: Start isEquivalent. First operand 24 states. Second operand 22 states. [2020-07-28 19:11:29,587 INFO L74 IsIncluded]: Start isIncluded. First operand 24 states. Second operand 22 states. [2020-07-28 19:11:29,587 INFO L87 Difference]: Start difference. First operand 24 states. Second operand 22 states. [2020-07-28 19:11:29,593 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-28 19:11:29,594 INFO L93 Difference]: Finished difference Result 24 states and 28 transitions. [2020-07-28 19:11:29,594 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 28 transitions. [2020-07-28 19:11:29,595 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-28 19:11:29,596 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2020-07-28 19:11:29,596 INFO L74 IsIncluded]: Start isIncluded. First operand 22 states. Second operand 24 states. [2020-07-28 19:11:29,596 INFO L87 Difference]: Start difference. First operand 22 states. Second operand 24 states. [2020-07-28 19:11:29,600 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-28 19:11:29,601 INFO L93 Difference]: Finished difference Result 24 states and 28 transitions. [2020-07-28 19:11:29,601 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 28 transitions. [2020-07-28 19:11:29,602 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-28 19:11:29,602 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2020-07-28 19:11:29,603 INFO L88 GeneralOperation]: Finished isEquivalent. [2020-07-28 19:11:29,603 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2020-07-28 19:11:29,603 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2020-07-28 19:11:29,606 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 26 transitions. [2020-07-28 19:11:29,608 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 26 transitions. Word has length 9 [2020-07-28 19:11:29,608 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-28 19:11:29,609 INFO L479 AbstractCegarLoop]: Abstraction has 22 states and 26 transitions. [2020-07-28 19:11:29,609 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-07-28 19:11:29,609 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 26 transitions. [2020-07-28 19:11:29,610 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-07-28 19:11:29,610 INFO L414 BasicCegarLoop]: Found error trace [2020-07-28 19:11:29,611 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-28 19:11:29,823 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2020-07-28 19:11:29,823 INFO L427 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-28 19:11:29,824 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-28 19:11:29,825 INFO L82 PathProgramCache]: Analyzing trace with hash 1372294011, now seen corresponding path program 1 times [2020-07-28 19:11:29,826 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-07-28 19:11:29,826 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1771735334] [2020-07-28 19:11:29,827 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 3 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with mathsat -unsat_core_generation=3 [2020-07-28 19:11:29,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-28 19:11:29,860 INFO L263 TraceCheckSpWp]: Trace formula consists of 24 conjuncts, 7 conjunts are in the unsatisfiable core [2020-07-28 19:11:29,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-28 19:11:29,869 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-28 19:11:29,975 INFO L280 TraceCheckUtils]: 0: Hoare triple {203#true} havoc main_#res;havoc main_#t~nondet2, main_#t~ret3, main_~input~0, main_~result~0;main_~input~0 := main_#t~nondet2;havoc main_#t~nondet2; {203#true} is VALID [2020-07-28 19:11:29,975 INFO L263 TraceCheckUtils]: 1: Hoare triple {203#true} call main_#t~ret3 := id(main_~input~0); {203#true} is VALID [2020-07-28 19:11:29,976 INFO L280 TraceCheckUtils]: 2: Hoare triple {203#true} ~x := #in~x; {203#true} is VALID [2020-07-28 19:11:29,976 INFO L280 TraceCheckUtils]: 3: Hoare triple {203#true} assume !(0bv32 == ~x); {203#true} is VALID [2020-07-28 19:11:29,977 INFO L263 TraceCheckUtils]: 4: Hoare triple {203#true} call #t~ret0 := id2(~bvsub32(~x, 1bv32)); {203#true} is VALID [2020-07-28 19:11:29,977 INFO L280 TraceCheckUtils]: 5: Hoare triple {203#true} ~x := #in~x; {203#true} is VALID [2020-07-28 19:11:29,978 INFO L280 TraceCheckUtils]: 6: Hoare triple {203#true} assume 0bv32 == ~x;#res := 0bv32; {226#(= (_ bv0 32) |id2_#res|)} is VALID [2020-07-28 19:11:29,979 INFO L280 TraceCheckUtils]: 7: Hoare triple {226#(= (_ bv0 32) |id2_#res|)} assume true; {226#(= (_ bv0 32) |id2_#res|)} is VALID [2020-07-28 19:11:29,980 INFO L275 TraceCheckUtils]: 8: Hoare quadruple {226#(= (_ bv0 32) |id2_#res|)} {203#true} #44#return; {233#(= (_ bv0 32) |id_#t~ret0|)} is VALID [2020-07-28 19:11:29,982 INFO L280 TraceCheckUtils]: 9: Hoare triple {233#(= (_ bv0 32) |id_#t~ret0|)} ~ret~0 := ~bvadd32(1bv32, #t~ret0);havoc #t~ret0; {237#(= (bvadd id_~ret~0 (_ bv4294967295 32)) (_ bv0 32))} is VALID [2020-07-28 19:11:29,983 INFO L280 TraceCheckUtils]: 10: Hoare triple {237#(= (bvadd id_~ret~0 (_ bv4294967295 32)) (_ bv0 32))} assume !~bvugt32(~ret~0, 3bv32);#res := ~ret~0; {241#(= (bvadd |id_#res| (_ bv4294967295 32)) (_ bv0 32))} is VALID [2020-07-28 19:11:29,984 INFO L280 TraceCheckUtils]: 11: Hoare triple {241#(= (bvadd |id_#res| (_ bv4294967295 32)) (_ bv0 32))} assume true; {241#(= (bvadd |id_#res| (_ bv4294967295 32)) (_ bv0 32))} is VALID [2020-07-28 19:11:29,985 INFO L275 TraceCheckUtils]: 12: Hoare quadruple {241#(= (bvadd |id_#res| (_ bv4294967295 32)) (_ bv0 32))} {203#true} #42#return; {248#(= (bvadd |ULTIMATE.start_main_#t~ret3| (_ bv4294967295 32)) (_ bv0 32))} is VALID [2020-07-28 19:11:29,986 INFO L280 TraceCheckUtils]: 13: Hoare triple {248#(= (bvadd |ULTIMATE.start_main_#t~ret3| (_ bv4294967295 32)) (_ bv0 32))} main_~result~0 := main_#t~ret3;havoc main_#t~ret3; {252#(= (_ bv1 32) ULTIMATE.start_main_~result~0)} is VALID [2020-07-28 19:11:29,987 INFO L280 TraceCheckUtils]: 14: Hoare triple {252#(= (_ bv1 32) ULTIMATE.start_main_~result~0)} assume 2bv32 == main_~result~0; {204#false} is VALID [2020-07-28 19:11:29,988 INFO L280 TraceCheckUtils]: 15: Hoare triple {204#false} assume !false; {204#false} is VALID [2020-07-28 19:11:29,989 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-28 19:11:29,990 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-28 19:11:30,226 INFO L280 TraceCheckUtils]: 15: Hoare triple {204#false} assume !false; {204#false} is VALID [2020-07-28 19:11:30,227 INFO L280 TraceCheckUtils]: 14: Hoare triple {262#(not (= (_ bv2 32) ULTIMATE.start_main_~result~0))} assume 2bv32 == main_~result~0; {204#false} is VALID [2020-07-28 19:11:30,228 INFO L280 TraceCheckUtils]: 13: Hoare triple {266#(not (= (bvadd |ULTIMATE.start_main_#t~ret3| (_ bv4294967294 32)) (_ bv0 32)))} main_~result~0 := main_#t~ret3;havoc main_#t~ret3; {262#(not (= (_ bv2 32) ULTIMATE.start_main_~result~0))} is VALID [2020-07-28 19:11:30,230 INFO L275 TraceCheckUtils]: 12: Hoare quadruple {273#(not (= (bvadd |id_#res| (_ bv4294967294 32)) (_ bv0 32)))} {203#true} #42#return; {266#(not (= (bvadd |ULTIMATE.start_main_#t~ret3| (_ bv4294967294 32)) (_ bv0 32)))} is VALID [2020-07-28 19:11:30,231 INFO L280 TraceCheckUtils]: 11: Hoare triple {273#(not (= (bvadd |id_#res| (_ bv4294967294 32)) (_ bv0 32)))} assume true; {273#(not (= (bvadd |id_#res| (_ bv4294967294 32)) (_ bv0 32)))} is VALID [2020-07-28 19:11:30,232 INFO L280 TraceCheckUtils]: 10: Hoare triple {280#(not (= (bvadd id_~ret~0 (_ bv4294967294 32)) (_ bv0 32)))} assume !~bvugt32(~ret~0, 3bv32);#res := ~ret~0; {273#(not (= (bvadd |id_#res| (_ bv4294967294 32)) (_ bv0 32)))} is VALID [2020-07-28 19:11:30,232 INFO L280 TraceCheckUtils]: 9: Hoare triple {284#(not (= (_ bv1 32) |id_#t~ret0|))} ~ret~0 := ~bvadd32(1bv32, #t~ret0);havoc #t~ret0; {280#(not (= (bvadd id_~ret~0 (_ bv4294967294 32)) (_ bv0 32)))} is VALID [2020-07-28 19:11:30,234 INFO L275 TraceCheckUtils]: 8: Hoare quadruple {291#(not (= (_ bv1 32) |id2_#res|))} {203#true} #44#return; {284#(not (= (_ bv1 32) |id_#t~ret0|))} is VALID [2020-07-28 19:11:30,234 INFO L280 TraceCheckUtils]: 7: Hoare triple {291#(not (= (_ bv1 32) |id2_#res|))} assume true; {291#(not (= (_ bv1 32) |id2_#res|))} is VALID [2020-07-28 19:11:30,235 INFO L280 TraceCheckUtils]: 6: Hoare triple {203#true} assume 0bv32 == ~x;#res := 0bv32; {291#(not (= (_ bv1 32) |id2_#res|))} is VALID [2020-07-28 19:11:30,235 INFO L280 TraceCheckUtils]: 5: Hoare triple {203#true} ~x := #in~x; {203#true} is VALID [2020-07-28 19:11:30,236 INFO L263 TraceCheckUtils]: 4: Hoare triple {203#true} call #t~ret0 := id2(~bvsub32(~x, 1bv32)); {203#true} is VALID [2020-07-28 19:11:30,236 INFO L280 TraceCheckUtils]: 3: Hoare triple {203#true} assume !(0bv32 == ~x); {203#true} is VALID [2020-07-28 19:11:30,236 INFO L280 TraceCheckUtils]: 2: Hoare triple {203#true} ~x := #in~x; {203#true} is VALID [2020-07-28 19:11:30,237 INFO L263 TraceCheckUtils]: 1: Hoare triple {203#true} call main_#t~ret3 := id(main_~input~0); {203#true} is VALID [2020-07-28 19:11:30,237 INFO L280 TraceCheckUtils]: 0: Hoare triple {203#true} havoc main_#res;havoc main_#t~nondet2, main_#t~ret3, main_~input~0, main_~result~0;main_~input~0 := main_#t~nondet2;havoc main_#t~nondet2; {203#true} is VALID [2020-07-28 19:11:30,238 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-28 19:11:30,239 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1771735334] [2020-07-28 19:11:30,239 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-07-28 19:11:30,239 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8, 8] imperfect sequences [] total 14 [2020-07-28 19:11:30,240 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [907020864] [2020-07-28 19:11:30,241 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 16 [2020-07-28 19:11:30,242 INFO L84 Accepts]: Finished accepts. word is accepted. [2020-07-28 19:11:30,242 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 14 states. [2020-07-28 19:11:30,286 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 25 edges. 25 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2020-07-28 19:11:30,286 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-07-28 19:11:30,287 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-07-28 19:11:30,287 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-07-28 19:11:30,287 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=151, Unknown=0, NotChecked=0, Total=182 [2020-07-28 19:11:30,288 INFO L87 Difference]: Start difference. First operand 22 states and 26 transitions. Second operand 14 states. [2020-07-28 19:11:30,850 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-28 19:11:30,850 INFO L93 Difference]: Finished difference Result 54 states and 64 transitions. [2020-07-28 19:11:30,851 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-07-28 19:11:30,851 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 16 [2020-07-28 19:11:30,851 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-28 19:11:30,852 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2020-07-28 19:11:30,857 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 60 transitions. [2020-07-28 19:11:30,857 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2020-07-28 19:11:30,862 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 60 transitions. [2020-07-28 19:11:30,862 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 15 states and 60 transitions. [2020-07-28 19:11:30,962 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 60 edges. 60 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2020-07-28 19:11:30,965 INFO L225 Difference]: With dead ends: 54 [2020-07-28 19:11:30,965 INFO L226 Difference]: Without dead ends: 36 [2020-07-28 19:11:30,967 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=42, Invalid=198, Unknown=0, NotChecked=0, Total=240 [2020-07-28 19:11:30,967 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2020-07-28 19:11:30,975 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 30. [2020-07-28 19:11:30,976 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2020-07-28 19:11:30,976 INFO L82 GeneralOperation]: Start isEquivalent. First operand 36 states. Second operand 30 states. [2020-07-28 19:11:30,976 INFO L74 IsIncluded]: Start isIncluded. First operand 36 states. Second operand 30 states. [2020-07-28 19:11:30,976 INFO L87 Difference]: Start difference. First operand 36 states. Second operand 30 states. [2020-07-28 19:11:30,980 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-28 19:11:30,981 INFO L93 Difference]: Finished difference Result 36 states and 41 transitions. [2020-07-28 19:11:30,981 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 41 transitions. [2020-07-28 19:11:30,982 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-28 19:11:30,983 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2020-07-28 19:11:30,983 INFO L74 IsIncluded]: Start isIncluded. First operand 30 states. Second operand 36 states. [2020-07-28 19:11:30,983 INFO L87 Difference]: Start difference. First operand 30 states. Second operand 36 states. [2020-07-28 19:11:30,987 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-28 19:11:30,988 INFO L93 Difference]: Finished difference Result 36 states and 41 transitions. [2020-07-28 19:11:30,988 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 41 transitions. [2020-07-28 19:11:30,989 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-28 19:11:30,989 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2020-07-28 19:11:30,989 INFO L88 GeneralOperation]: Finished isEquivalent. [2020-07-28 19:11:30,990 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2020-07-28 19:11:30,990 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2020-07-28 19:11:30,993 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 35 transitions. [2020-07-28 19:11:30,993 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 35 transitions. Word has length 16 [2020-07-28 19:11:30,994 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-28 19:11:30,994 INFO L479 AbstractCegarLoop]: Abstraction has 30 states and 35 transitions. [2020-07-28 19:11:30,994 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-07-28 19:11:30,994 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 35 transitions. [2020-07-28 19:11:30,995 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-07-28 19:11:30,996 INFO L414 BasicCegarLoop]: Found error trace [2020-07-28 19:11:30,996 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-28 19:11:31,208 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 mathsat -unsat_core_generation=3 [2020-07-28 19:11:31,209 INFO L427 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-28 19:11:31,209 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-28 19:11:31,210 INFO L82 PathProgramCache]: Analyzing trace with hash -1168359066, now seen corresponding path program 1 times [2020-07-28 19:11:31,211 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-07-28 19:11:31,212 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [725041356] [2020-07-28 19:11:31,212 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 4 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2020-07-28 19:11:31,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-28 19:11:31,238 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. Waiting until toolchain timeout for monitored process 4 with mathsat -unsat_core_generation=3 [2020-07-28 19:11:31,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-28 19:11:31,259 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-07-28 19:11:31,303 INFO L174 FreeRefinementEngine]: Strategy WOLF found a feasible trace [2020-07-28 19:11:31,304 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-07-28 19:11:31,514 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 mathsat -unsat_core_generation=3 [2020-07-28 19:11:31,527 FATAL L488 DefaultTranslator]: Callstack has procedure call flag but succeeding procedure is empty at [CALL] call #t~ret3 := id(~input~0); [2020-07-28 19:11:31,528 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.AssertionError: callstack broken after backtranslation by InlinerBacktranslator at de.uni_freiburg.informatik.ultimate.boogie.procedureinliner.backtranslation.InlinerBacktranslator.translateProgramExecution(InlinerBacktranslator.java:216) at de.uni_freiburg.informatik.ultimate.core.coreplugin.services.ModelTranslationContainer.translateProgramExecution(ModelTranslationContainer.java:216) at de.uni_freiburg.informatik.ultimate.core.coreplugin.services.ModelTranslationContainer.translateProgramExecution(ModelTranslationContainer.java:225) at de.uni_freiburg.informatik.ultimate.core.coreplugin.services.ModelTranslationContainer.translateProgramExecution(ModelTranslationContainer.java:225) at de.uni_freiburg.informatik.ultimate.core.coreplugin.services.ModelTranslationContainer.translateProgramExecution(ModelTranslationContainer.java:206) at de.uni_freiburg.informatik.ultimate.core.lib.results.CounterExampleResult.getProgramExecutionAsString(CounterExampleResult.java:155) at de.uni_freiburg.informatik.ultimate.core.lib.results.CounterExampleResult.getLongDescription(CounterExampleResult.java:134) at de.uni_freiburg.informatik.ultimate.core.coreplugin.services.ResultService.reportResult(ResultService.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.reportResult(TraceAbstractionStarter.java:693) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.reportCounterexampleResult(TraceAbstractionStarter.java:626) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.reportResults(TraceAbstractionStarter.java:525) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.iterateNew(TraceAbstractionStarter.java:383) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:175) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:127) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:120) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:317) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:55) [2020-07-28 19:11:31,534 INFO L168 Benchmark]: Toolchain (without parser) took 3781.00 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 79.2 MB). Free memory was 960.2 MB in the beginning and 820.3 MB in the end (delta: 140.0 MB). Peak memory consumption was 219.1 MB. Max. memory is 11.5 GB. [2020-07-28 19:11:31,534 INFO L168 Benchmark]: CDTParser took 0.27 ms. Allocated memory is still 1.0 GB. Free memory is still 987.1 MB. There was no memory consumed. Max. memory is 11.5 GB. [2020-07-28 19:11:31,535 INFO L168 Benchmark]: CACSL2BoogieTranslator took 322.77 ms. Allocated memory is still 1.0 GB. Free memory was 960.2 MB in the beginning and 949.5 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2020-07-28 19:11:31,536 INFO L168 Benchmark]: Boogie Procedure Inliner took 95.59 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 79.2 MB). Free memory was 949.5 MB in the beginning and 1.1 GB in the end (delta: -125.6 MB). Peak memory consumption was 9.6 MB. Max. memory is 11.5 GB. [2020-07-28 19:11:31,536 INFO L168 Benchmark]: Boogie Preprocessor took 23.05 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2020-07-28 19:11:31,537 INFO L168 Benchmark]: RCFGBuilder took 372.77 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 28.0 MB). Peak memory consumption was 28.0 MB. Max. memory is 11.5 GB. [2020-07-28 19:11:31,538 INFO L168 Benchmark]: TraceAbstraction took 2956.78 ms. Allocated memory is still 1.1 GB. Free memory was 1.0 GB in the beginning and 820.3 MB in the end (delta: 226.9 MB). Peak memory consumption was 226.9 MB. Max. memory is 11.5 GB. [2020-07-28 19:11:31,542 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - AssertionsEnabledResult: Assertions are enabled Assertions are enabled - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.27 ms. Allocated memory is still 1.0 GB. Free memory is still 987.1 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 322.77 ms. Allocated memory is still 1.0 GB. Free memory was 960.2 MB in the beginning and 949.5 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 95.59 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 79.2 MB). Free memory was 949.5 MB in the beginning and 1.1 GB in the end (delta: -125.6 MB). Peak memory consumption was 9.6 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 23.05 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 372.77 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 28.0 MB). Peak memory consumption was 28.0 MB. Max. memory is 11.5 GB. * TraceAbstraction took 2956.78 ms. Allocated memory is still 1.1 GB. Free memory was 1.0 GB in the beginning and 820.3 MB in the end (delta: 226.9 MB). Peak memory consumption was 226.9 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: AssertionError: callstack broken after backtranslation by InlinerBacktranslator de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: AssertionError: callstack broken after backtranslation by InlinerBacktranslator: de.uni_freiburg.informatik.ultimate.boogie.procedureinliner.backtranslation.InlinerBacktranslator.translateProgramExecution(InlinerBacktranslator.java:216) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request...