./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/ldv-regression/fo_test.i --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/ldv-regression/fo_test.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(__VERIFIER_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 1b89be727e1b941b152f4b6e505aae7e5221fdd7 .................................................................................................................................................................................................................................................................................................................................. 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/ldv-regression/fo_test.i -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 1b89be727e1b941b152f4b6e505aae7e5221fdd7 ...................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: UNKNOWN: Overapproximated counterexample --- Real Ultimate output --- This is Ultimate 0.1.25-8bd4bc6 [2020-07-28 17:57:59,486 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-28 17:57:59,488 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-28 17:57:59,500 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-28 17:57:59,501 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-28 17:57:59,502 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-28 17:57:59,503 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-28 17:57:59,505 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-28 17:57:59,507 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-28 17:57:59,508 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-28 17:57:59,509 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-28 17:57:59,510 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-28 17:57:59,511 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-28 17:57:59,512 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-28 17:57:59,513 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-28 17:57:59,514 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-28 17:57:59,515 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-28 17:57:59,516 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-28 17:57:59,518 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-28 17:57:59,520 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-28 17:57:59,521 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-28 17:57:59,522 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-28 17:57:59,524 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-28 17:57:59,524 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-28 17:57:59,529 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-07-28 17:57:59,529 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-07-28 17:57:59,529 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-07-28 17:57:59,530 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-07-28 17:57:59,530 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-07-28 17:57:59,531 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-07-28 17:57:59,531 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-07-28 17:57:59,532 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-07-28 17:57:59,533 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-07-28 17:57:59,534 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-07-28 17:57:59,535 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-07-28 17:57:59,535 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-07-28 17:57:59,536 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-07-28 17:57:59,536 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-07-28 17:57:59,536 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-28 17:57:59,537 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-28 17:57:59,538 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-28 17:57:59,538 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2020-07-28 17:57:59,553 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-28 17:57:59,553 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-28 17:57:59,554 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-28 17:57:59,554 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-28 17:57:59,554 INFO L138 SettingsManager]: * Use SBE=true [2020-07-28 17:57:59,555 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-28 17:57:59,555 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-28 17:57:59,555 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-28 17:57:59,555 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-28 17:57:59,555 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-28 17:57:59,556 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-28 17:57:59,556 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-28 17:57:59,556 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-28 17:57:59,556 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-28 17:57:59,556 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-28 17:57:59,557 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-28 17:57:59,557 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-28 17:57:59,557 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-28 17:57:59,557 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-28 17:57:59,558 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-28 17:57:59,558 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-28 17:57:59,558 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-28 17:57:59,558 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-28 17:57:59,558 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-07-28 17:57:59,559 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-07-28 17:57:59,559 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-07-28 17:57:59,559 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-28 17:57:59,559 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-28 17:57:59,559 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-07-28 17:57:59,560 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 -> 1b89be727e1b941b152f4b6e505aae7e5221fdd7 [2020-07-28 17:57:59,874 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-28 17:57:59,887 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-28 17:57:59,890 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-28 17:57:59,892 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-28 17:57:59,892 INFO L275 PluginConnector]: CDTParser initialized [2020-07-28 17:57:59,893 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-regression/fo_test.i [2020-07-28 17:57:59,969 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/da815c690/696e65bccbf048d79574ba6b493926db/FLAGb1b308ac6 [2020-07-28 17:58:00,533 INFO L306 CDTParser]: Found 1 translation units. [2020-07-28 17:58:00,534 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-regression/fo_test.i [2020-07-28 17:58:00,559 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/da815c690/696e65bccbf048d79574ba6b493926db/FLAGb1b308ac6 [2020-07-28 17:58:00,804 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/da815c690/696e65bccbf048d79574ba6b493926db [2020-07-28 17:58:00,807 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-28 17:58:00,809 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-07-28 17:58:00,810 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-28 17:58:00,811 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-28 17:58:00,814 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-28 17:58:00,816 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.07 05:58:00" (1/1) ... [2020-07-28 17:58:00,819 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@17e2c6c5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 05:58:00, skipping insertion in model container [2020-07-28 17:58:00,819 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.07 05:58:00" (1/1) ... [2020-07-28 17:58:00,827 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-28 17:58:00,889 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-28 17:58:01,293 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-28 17:58:01,397 INFO L203 MainTranslator]: Completed pre-run [2020-07-28 17:58:01,448 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-28 17:58:01,516 INFO L208 MainTranslator]: Completed translation [2020-07-28 17:58:01,517 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 05:58:01 WrapperNode [2020-07-28 17:58:01,517 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-28 17:58:01,518 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-07-28 17:58:01,518 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-07-28 17:58:01,519 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-07-28 17:58:01,528 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 05:58:01" (1/1) ... [2020-07-28 17:58:01,544 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 05:58:01" (1/1) ... [2020-07-28 17:58:01,574 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-07-28 17:58:01,575 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-28 17:58:01,575 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-28 17:58:01,576 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-28 17:58:01,587 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 05:58:01" (1/1) ... [2020-07-28 17:58:01,587 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 05:58:01" (1/1) ... [2020-07-28 17:58:01,590 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 05:58:01" (1/1) ... [2020-07-28 17:58:01,590 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 05:58:01" (1/1) ... [2020-07-28 17:58:01,595 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 05:58:01" (1/1) ... [2020-07-28 17:58:01,598 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 05:58:01" (1/1) ... [2020-07-28 17:58:01,600 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 05:58:01" (1/1) ... [2020-07-28 17:58:01,602 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-28 17:58:01,603 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-28 17:58:01,603 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-28 17:58:01,603 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-28 17:58:01,604 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 05:58:01" (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 17:58:01,669 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-07-28 17:58:01,670 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-07-28 17:58:01,670 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-07-28 17:58:01,670 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-28 17:58:01,670 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-28 17:58:02,051 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-28 17:58:02,051 INFO L295 CfgBuilder]: Removed 10 assume(true) statements. [2020-07-28 17:58:02,054 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.07 05:58:02 BoogieIcfgContainer [2020-07-28 17:58:02,054 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-28 17:58:02,056 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-28 17:58:02,056 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-28 17:58:02,059 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-28 17:58:02,059 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.07 05:58:00" (1/3) ... [2020-07-28 17:58:02,060 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@e7ae811 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.07 05:58:02, skipping insertion in model container [2020-07-28 17:58:02,060 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 05:58:01" (2/3) ... [2020-07-28 17:58:02,061 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@e7ae811 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.07 05:58:02, skipping insertion in model container [2020-07-28 17:58:02,061 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.07 05:58:02" (3/3) ... [2020-07-28 17:58:02,063 INFO L109 eAbstractionObserver]: Analyzing ICFG fo_test.i [2020-07-28 17:58:02,072 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-07-28 17:58:02,080 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-28 17:58:02,094 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-28 17:58:02,116 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-28 17:58:02,116 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-28 17:58:02,117 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-07-28 17:58:02,117 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-28 17:58:02,117 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-28 17:58:02,118 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-28 17:58:02,118 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-28 17:58:02,118 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-28 17:58:02,133 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states. [2020-07-28 17:58:02,140 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2020-07-28 17:58:02,140 INFO L414 BasicCegarLoop]: Found error trace [2020-07-28 17:58:02,141 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2020-07-28 17:58:02,141 INFO L427 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-28 17:58:02,146 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-28 17:58:02,146 INFO L82 PathProgramCache]: Analyzing trace with hash 1804965446, now seen corresponding path program 1 times [2020-07-28 17:58:02,154 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-28 17:58:02,154 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1629941049] [2020-07-28 17:58:02,155 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-28 17:58:02,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-28 17:58:02,336 INFO L280 TraceCheckUtils]: 0: Hoare triple {16#true} #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string6.base, #t~string6.offset := #Ultimate.allocOnStack(8);~globalState~0 := 0; {16#true} is VALID [2020-07-28 17:58:02,337 INFO L280 TraceCheckUtils]: 1: Hoare triple {16#true} main_#in~argc, main_#in~argv.base, main_#in~argv.offset := #in~argc, #in~argv.base, #in~argv.offset;havoc main_#res;havoc main_#t~ret7, main_#t~malloc8.base, main_#t~malloc8.offset, main_#t~ret9, main_~argc, main_~argv.base, main_~argv.offset, main_~file~0, main_~cbuf~0.base, main_~cbuf~0.offset, main_~a~0;main_~argc := main_#in~argc;main_~argv.base, main_~argv.offset := main_#in~argv.base, main_#in~argv.offset;l_open_#in~file.base, l_open_#in~file.offset, l_open_#in~flags := #t~string6.base, #t~string6.offset, 0;havoc l_open_#res;havoc l_open_#t~nondet11, l_open_~file.base, l_open_~file.offset, l_open_~flags, l_open_~fd~0;l_open_~file.base, l_open_~file.offset := l_open_#in~file.base, l_open_#in~file.offset;l_open_~flags := l_open_#in~flags;havoc l_open_#t~nondet11;l_open_~fd~0 := l_open_#t~nondet11; {16#true} is VALID [2020-07-28 17:58:02,343 INFO L280 TraceCheckUtils]: 2: Hoare triple {16#true} assume l_open_~fd~0 > 0;~globalState~0 := 1; {18#(= 1 ~globalState~0)} is VALID [2020-07-28 17:58:02,345 INFO L280 TraceCheckUtils]: 3: Hoare triple {18#(= 1 ~globalState~0)} l_open_#res := l_open_~fd~0; {18#(= 1 ~globalState~0)} is VALID [2020-07-28 17:58:02,346 INFO L280 TraceCheckUtils]: 4: Hoare triple {18#(= 1 ~globalState~0)} main_#t~ret7 := l_open_#res;assume -2147483648 <= main_#t~ret7 && main_#t~ret7 <= 2147483647;main_~file~0 := main_#t~ret7;havoc main_#t~ret7;call main_#t~malloc8.base, main_#t~malloc8.offset := #Ultimate.allocOnHeap(100);main_~cbuf~0.base, main_~cbuf~0.offset := main_#t~malloc8.base, main_#t~malloc8.offset;l_read_#in~fd, l_read_#in~cbuf.base, l_read_#in~cbuf.offset, l_read_#in~count := main_~file~0, main_~cbuf~0.base, main_~cbuf~0.offset, 99;havoc l_read_#res;havoc l_read_#t~ret10, l_read_~fd, l_read_~cbuf.base, l_read_~cbuf.offset, l_read_~count;l_read_~fd := l_read_#in~fd;l_read_~cbuf.base, l_read_~cbuf.offset := l_read_#in~cbuf.base, l_read_#in~cbuf.offset;l_read_~count := l_read_#in~count; {18#(= 1 ~globalState~0)} is VALID [2020-07-28 17:58:02,347 INFO L280 TraceCheckUtils]: 5: Hoare triple {18#(= 1 ~globalState~0)} assume !(1 == ~globalState~0); {17#false} is VALID [2020-07-28 17:58:02,347 INFO L280 TraceCheckUtils]: 6: Hoare triple {17#false} assume !false; {17#false} is VALID [2020-07-28 17:58:02,350 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 17:58:02,351 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1629941049] [2020-07-28 17:58:02,352 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-28 17:58:02,352 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-28 17:58:02,353 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [468399248] [2020-07-28 17:58:02,359 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 7 [2020-07-28 17:58:02,361 INFO L84 Accepts]: Finished accepts. word is accepted. [2020-07-28 17:58:02,364 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 3 states. [2020-07-28 17:58:02,388 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 7 edges. 7 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2020-07-28 17:58:02,389 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-28 17:58:02,389 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-28 17:58:02,397 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-28 17:58:02,398 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-28 17:58:02,400 INFO L87 Difference]: Start difference. First operand 13 states. Second operand 3 states. [2020-07-28 17:58:02,463 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-28 17:58:02,464 INFO L93 Difference]: Finished difference Result 23 states and 24 transitions. [2020-07-28 17:58:02,464 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-28 17:58:02,464 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 7 [2020-07-28 17:58:02,464 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-28 17:58:02,466 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-07-28 17:58:02,471 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 24 transitions. [2020-07-28 17:58:02,472 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-07-28 17:58:02,475 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 24 transitions. [2020-07-28 17:58:02,475 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 3 states and 24 transitions. [2020-07-28 17:58:02,518 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 24 edges. 24 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2020-07-28 17:58:02,528 INFO L225 Difference]: With dead ends: 23 [2020-07-28 17:58:02,529 INFO L226 Difference]: Without dead ends: 8 [2020-07-28 17:58:02,532 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-28 17:58:02,549 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8 states. [2020-07-28 17:58:02,563 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8 to 8. [2020-07-28 17:58:02,563 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2020-07-28 17:58:02,564 INFO L82 GeneralOperation]: Start isEquivalent. First operand 8 states. Second operand 8 states. [2020-07-28 17:58:02,564 INFO L74 IsIncluded]: Start isIncluded. First operand 8 states. Second operand 8 states. [2020-07-28 17:58:02,565 INFO L87 Difference]: Start difference. First operand 8 states. Second operand 8 states. [2020-07-28 17:58:02,566 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-28 17:58:02,567 INFO L93 Difference]: Finished difference Result 8 states and 7 transitions. [2020-07-28 17:58:02,567 INFO L276 IsEmpty]: Start isEmpty. Operand 8 states and 7 transitions. [2020-07-28 17:58:02,567 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-28 17:58:02,567 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2020-07-28 17:58:02,567 INFO L74 IsIncluded]: Start isIncluded. First operand 8 states. Second operand 8 states. [2020-07-28 17:58:02,568 INFO L87 Difference]: Start difference. First operand 8 states. Second operand 8 states. [2020-07-28 17:58:02,569 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-28 17:58:02,569 INFO L93 Difference]: Finished difference Result 8 states and 7 transitions. [2020-07-28 17:58:02,569 INFO L276 IsEmpty]: Start isEmpty. Operand 8 states and 7 transitions. [2020-07-28 17:58:02,570 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-28 17:58:02,570 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2020-07-28 17:58:02,570 INFO L88 GeneralOperation]: Finished isEquivalent. [2020-07-28 17:58:02,570 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2020-07-28 17:58:02,570 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2020-07-28 17:58:02,571 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 7 transitions. [2020-07-28 17:58:02,573 INFO L78 Accepts]: Start accepts. Automaton has 8 states and 7 transitions. Word has length 7 [2020-07-28 17:58:02,573 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-28 17:58:02,573 INFO L479 AbstractCegarLoop]: Abstraction has 8 states and 7 transitions. [2020-07-28 17:58:02,573 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-28 17:58:02,573 INFO L276 IsEmpty]: Start isEmpty. Operand 8 states and 7 transitions. [2020-07-28 17:58:02,574 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2020-07-28 17:58:02,574 INFO L414 BasicCegarLoop]: Found error trace [2020-07-28 17:58:02,574 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2020-07-28 17:58:02,575 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-07-28 17:58:02,575 INFO L427 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-28 17:58:02,575 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-28 17:58:02,575 INFO L82 PathProgramCache]: Analyzing trace with hash 1806812488, now seen corresponding path program 1 times [2020-07-28 17:58:02,575 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-28 17:58:02,576 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [563685385] [2020-07-28 17:58:02,576 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-28 17:58:02,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-28 17:58:02,596 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-07-28 17:58:02,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-28 17:58:02,615 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-07-28 17:58:02,646 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-07-28 17:58:02,646 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-07-28 17:58:02,648 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-07-28 17:58:02,685 WARN L170 areAnnotationChecker]: ULTIMATE.startENTRY has no Hoare annotation [2020-07-28 17:58:02,685 WARN L170 areAnnotationChecker]: L-1 has no Hoare annotation [2020-07-28 17:58:02,685 WARN L170 areAnnotationChecker]: L1171 has no Hoare annotation [2020-07-28 17:58:02,685 WARN L170 areAnnotationChecker]: L1171 has no Hoare annotation [2020-07-28 17:58:02,685 WARN L170 areAnnotationChecker]: L1171-2 has no Hoare annotation [2020-07-28 17:58:02,686 WARN L170 areAnnotationChecker]: L1172 has no Hoare annotation [2020-07-28 17:58:02,686 WARN L170 areAnnotationChecker]: L1165 has no Hoare annotation [2020-07-28 17:58:02,686 WARN L170 areAnnotationChecker]: L1165 has no Hoare annotation [2020-07-28 17:58:02,686 WARN L170 areAnnotationChecker]: L958 has no Hoare annotation [2020-07-28 17:58:02,686 WARN L170 areAnnotationChecker]: L960 has no Hoare annotation [2020-07-28 17:58:02,686 WARN L170 areAnnotationChecker]: L960 has no Hoare annotation [2020-07-28 17:58:02,687 WARN L170 areAnnotationChecker]: L1166 has no Hoare annotation [2020-07-28 17:58:02,687 WARN L170 areAnnotationChecker]: L1161 has no Hoare annotation [2020-07-28 17:58:02,687 WARN L170 areAnnotationChecker]: ULTIMATE.startFINAL has no Hoare annotation [2020-07-28 17:58:02,687 INFO L163 areAnnotationChecker]: CFG has 0 edges. 0 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. 0 times interpolants missing. [2020-07-28 17:58:02,689 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.07 05:58:02 BoogieIcfgContainer [2020-07-28 17:58:02,689 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-28 17:58:02,690 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-07-28 17:58:02,690 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-07-28 17:58:02,690 INFO L275 PluginConnector]: Witness Printer initialized [2020-07-28 17:58:02,692 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.07 05:58:02" (3/4) ... [2020-07-28 17:58:02,695 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-07-28 17:58:02,695 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-07-28 17:58:02,699 INFO L168 Benchmark]: Toolchain (without parser) took 1889.50 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 156.8 MB). Free memory was 960.2 MB in the beginning and 1.1 GB in the end (delta: -100.9 MB). Peak memory consumption was 55.8 MB. Max. memory is 11.5 GB. [2020-07-28 17:58:02,699 INFO L168 Benchmark]: CDTParser took 0.34 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 17:58:02,700 INFO L168 Benchmark]: CACSL2BoogieTranslator took 707.24 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 156.8 MB). Free memory was 960.2 MB in the beginning and 1.1 GB in the end (delta: -171.1 MB). Peak memory consumption was 33.1 MB. Max. memory is 11.5 GB. [2020-07-28 17:58:02,701 INFO L168 Benchmark]: Boogie Procedure Inliner took 56.80 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 17:58:02,701 INFO L168 Benchmark]: Boogie Preprocessor took 27.15 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 17:58:02,702 INFO L168 Benchmark]: RCFGBuilder took 452.07 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: 24.1 MB). Peak memory consumption was 24.1 MB. Max. memory is 11.5 GB. [2020-07-28 17:58:02,703 INFO L168 Benchmark]: TraceAbstraction took 633.89 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: 46.1 MB). Peak memory consumption was 46.1 MB. Max. memory is 11.5 GB. [2020-07-28 17:58:02,704 INFO L168 Benchmark]: Witness Printer took 5.66 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 17:58:02,707 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 0.34 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 707.24 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 156.8 MB). Free memory was 960.2 MB in the beginning and 1.1 GB in the end (delta: -171.1 MB). Peak memory consumption was 33.1 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 56.80 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. * Boogie Preprocessor took 27.15 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 452.07 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: 24.1 MB). Peak memory consumption was 24.1 MB. Max. memory is 11.5 GB. * TraceAbstraction took 633.89 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: 46.1 MB). Peak memory consumption was 46.1 MB. Max. memory is 11.5 GB. * Witness Printer took 5.66 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 960]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of large string literal at line 1158. Possible FailurePath: [L1152] int globalState = 0; VAL [globalState=0] [L1170] int fd = open(file,flags); VAL [globalState=0] [L1171] COND FALSE !(fd>0) VAL [globalState=0] [L1172] return fd; VAL [globalState=0] [L1158] int file = l_open("unknown",00); [L1159] void* cbuf = (void*) malloc(sizeof(char)*100); [L1165] (globalState == 1) ? (0) : __blast_assert () VAL [globalState=0] [L960] __VERIFIER_error() VAL [globalState=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 13 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 0.5s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 12 SDtfs, 5 SDslu, 5 SDs, 0 SdLazy, 3 SolverSat, 1 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=13occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 14 NumberOfCodeBlocks, 14 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 6 ConstructedInterpolants, 0 QuantifiedInterpolants, 72 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 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 could not prove your program: unable to determine feasibility of some traces Received shutdown request... ### Bit-precise run ### This is Ultimate 0.1.25-8bd4bc6 [2020-07-28 17:58:04,742 INFO L177 SettingsManager]: Resetting all preferences to default values... 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[2020-07-28 17:58:04,759 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-28 17:58:04,761 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-28 17:58:04,762 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-28 17:58:04,764 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-28 17:58:04,766 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-28 17:58:04,767 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-28 17:58:04,768 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-28 17:58:04,769 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-28 17:58:04,770 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-28 17:58:04,771 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-28 17:58:04,772 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-28 17:58:04,773 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-28 17:58:04,774 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-28 17:58:04,775 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-28 17:58:04,777 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-28 17:58:04,779 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-28 17:58:04,781 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-28 17:58:04,782 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-28 17:58:04,784 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-28 17:58:04,785 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-28 17:58:04,788 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-07-28 17:58:04,788 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-07-28 17:58:04,788 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-07-28 17:58:04,789 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-07-28 17:58:04,790 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-07-28 17:58:04,791 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-07-28 17:58:04,791 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-07-28 17:58:04,792 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-07-28 17:58:04,793 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-07-28 17:58:04,794 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-07-28 17:58:04,795 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-07-28 17:58:04,795 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-07-28 17:58:04,796 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-07-28 17:58:04,797 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-07-28 17:58:04,797 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-28 17:58:04,798 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-28 17:58:04,799 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-28 17:58:04,800 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2020-07-28 17:58:04,815 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-28 17:58:04,816 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-28 17:58:04,817 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-28 17:58:04,817 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-28 17:58:04,818 INFO L138 SettingsManager]: * Use SBE=true [2020-07-28 17:58:04,818 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-28 17:58:04,818 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-28 17:58:04,819 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-28 17:58:04,819 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-28 17:58:04,819 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-28 17:58:04,819 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-28 17:58:04,820 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-28 17:58:04,820 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2020-07-28 17:58:04,820 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2020-07-28 17:58:04,821 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-28 17:58:04,821 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-28 17:58:04,821 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-28 17:58:04,821 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-28 17:58:04,822 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-28 17:58:04,822 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-28 17:58:04,822 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-28 17:58:04,822 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-28 17:58:04,823 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-28 17:58:04,823 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-28 17:58:04,823 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-07-28 17:58:04,824 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-07-28 17:58:04,824 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2020-07-28 17:58:04,824 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2020-07-28 17:58:04,825 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-28 17:58:04,825 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-07-28 17:58:04,825 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-07-28 17:58:04,825 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 -> 1b89be727e1b941b152f4b6e505aae7e5221fdd7 [2020-07-28 17:58:05,112 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-28 17:58:05,126 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-28 17:58:05,130 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-28 17:58:05,132 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-28 17:58:05,135 INFO L275 PluginConnector]: CDTParser initialized [2020-07-28 17:58:05,136 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-regression/fo_test.i [2020-07-28 17:58:05,212 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2dbf81a10/25b306987657469ea225d92549d3f175/FLAG588f662a9 [2020-07-28 17:58:05,777 INFO L306 CDTParser]: Found 1 translation units. [2020-07-28 17:58:05,778 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-regression/fo_test.i [2020-07-28 17:58:05,794 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2dbf81a10/25b306987657469ea225d92549d3f175/FLAG588f662a9 [2020-07-28 17:58:06,051 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2dbf81a10/25b306987657469ea225d92549d3f175 [2020-07-28 17:58:06,055 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-28 17:58:06,058 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-07-28 17:58:06,060 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-28 17:58:06,061 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-28 17:58:06,065 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-28 17:58:06,067 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.07 05:58:06" (1/1) ... [2020-07-28 17:58:06,070 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6d9babff and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 05:58:06, skipping insertion in model container [2020-07-28 17:58:06,071 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.07 05:58:06" (1/1) ... [2020-07-28 17:58:06,080 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-28 17:58:06,141 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-28 17:58:06,593 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-28 17:58:06,605 INFO L203 MainTranslator]: Completed pre-run [2020-07-28 17:58:06,648 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-28 17:58:06,714 INFO L208 MainTranslator]: Completed translation [2020-07-28 17:58:06,715 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 05:58:06 WrapperNode [2020-07-28 17:58:06,715 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-28 17:58:06,717 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-07-28 17:58:06,717 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-07-28 17:58:06,717 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-07-28 17:58:06,727 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 05:58:06" (1/1) ... [2020-07-28 17:58:06,748 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 05:58:06" (1/1) ... [2020-07-28 17:58:06,776 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-07-28 17:58:06,777 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-28 17:58:06,777 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-28 17:58:06,777 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-28 17:58:06,787 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 05:58:06" (1/1) ... [2020-07-28 17:58:06,787 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 05:58:06" (1/1) ... [2020-07-28 17:58:06,790 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 05:58:06" (1/1) ... [2020-07-28 17:58:06,791 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 05:58:06" (1/1) ... [2020-07-28 17:58:06,800 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 05:58:06" (1/1) ... [2020-07-28 17:58:06,803 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 05:58:06" (1/1) ... [2020-07-28 17:58:06,805 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 05:58:06" (1/1) ... [2020-07-28 17:58:06,809 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-28 17:58:06,810 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-28 17:58:06,810 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-28 17:58:06,810 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-28 17:58:06,811 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 05:58:06" (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 17:58:06,881 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-07-28 17:58:06,881 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-07-28 17:58:06,882 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-07-28 17:58:06,882 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-28 17:58:06,882 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-28 17:58:07,257 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-28 17:58:07,258 INFO L295 CfgBuilder]: Removed 10 assume(true) statements. [2020-07-28 17:58:07,261 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.07 05:58:07 BoogieIcfgContainer [2020-07-28 17:58:07,261 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-28 17:58:07,263 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-28 17:58:07,263 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-28 17:58:07,266 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-28 17:58:07,267 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.07 05:58:06" (1/3) ... [2020-07-28 17:58:07,268 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@862219b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.07 05:58:07, skipping insertion in model container [2020-07-28 17:58:07,268 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 05:58:06" (2/3) ... [2020-07-28 17:58:07,268 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@862219b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.07 05:58:07, skipping insertion in model container [2020-07-28 17:58:07,269 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.07 05:58:07" (3/3) ... [2020-07-28 17:58:07,271 INFO L109 eAbstractionObserver]: Analyzing ICFG fo_test.i [2020-07-28 17:58:07,279 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-07-28 17:58:07,285 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-28 17:58:07,296 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-28 17:58:07,317 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-28 17:58:07,318 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-28 17:58:07,318 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-07-28 17:58:07,318 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-28 17:58:07,323 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-28 17:58:07,324 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-28 17:58:07,324 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-28 17:58:07,324 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-28 17:58:07,339 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states. [2020-07-28 17:58:07,345 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2020-07-28 17:58:07,345 INFO L414 BasicCegarLoop]: Found error trace [2020-07-28 17:58:07,346 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2020-07-28 17:58:07,347 INFO L427 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-28 17:58:07,354 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-28 17:58:07,354 INFO L82 PathProgramCache]: Analyzing trace with hash 1804965446, now seen corresponding path program 1 times [2020-07-28 17:58:07,366 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-07-28 17:58:07,367 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [320755043] [2020-07-28 17:58:07,367 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 17:58:07,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-28 17:58:07,470 INFO L263 TraceCheckSpWp]: Trace formula consists of 48 conjuncts, 2 conjunts are in the unsatisfiable core [2020-07-28 17:58:07,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-28 17:58:07,490 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-28 17:58:07,562 INFO L280 TraceCheckUtils]: 0: Hoare triple {16#true} #NULL.base, #NULL.offset := 0bv32, 0bv32;#valid := #valid[0bv32 := 0bv1];assume ~bvult32(0bv32, #StackHeapBarrier);currentRoundingMode := ~roundNearestTiesToEven;call #t~string6.base, #t~string6.offset := #Ultimate.allocOnStack(8bv32);~globalState~0 := 0bv32; {16#true} is VALID [2020-07-28 17:58:07,562 INFO L280 TraceCheckUtils]: 1: Hoare triple {16#true} main_#in~argc, main_#in~argv.base, main_#in~argv.offset := #in~argc, #in~argv.base, #in~argv.offset;havoc main_#res;havoc main_#t~ret7, main_#t~malloc8.base, main_#t~malloc8.offset, main_#t~ret9, main_~argc, main_~argv.base, main_~argv.offset, main_~file~0, main_~cbuf~0.base, main_~cbuf~0.offset, main_~a~0;main_~argc := main_#in~argc;main_~argv.base, main_~argv.offset := main_#in~argv.base, main_#in~argv.offset;l_open_#in~file.base, l_open_#in~file.offset, l_open_#in~flags := #t~string6.base, #t~string6.offset, 0bv32;havoc l_open_#res;havoc l_open_#t~nondet11, l_open_~file.base, l_open_~file.offset, l_open_~flags, l_open_~fd~0;l_open_~file.base, l_open_~file.offset := l_open_#in~file.base, l_open_#in~file.offset;l_open_~flags := l_open_#in~flags;havoc l_open_#t~nondet11;l_open_~fd~0 := l_open_#t~nondet11; {16#true} is VALID [2020-07-28 17:58:07,566 INFO L280 TraceCheckUtils]: 2: Hoare triple {16#true} assume ~bvsgt32(l_open_~fd~0, 0bv32);~globalState~0 := 1bv32; {27#(= (bvadd ~globalState~0 (_ bv4294967295 32)) (_ bv0 32))} is VALID [2020-07-28 17:58:07,567 INFO L280 TraceCheckUtils]: 3: Hoare triple {27#(= (bvadd ~globalState~0 (_ bv4294967295 32)) (_ bv0 32))} l_open_#res := l_open_~fd~0; {27#(= (bvadd ~globalState~0 (_ bv4294967295 32)) (_ bv0 32))} is VALID [2020-07-28 17:58:07,570 INFO L280 TraceCheckUtils]: 4: Hoare triple {27#(= (bvadd ~globalState~0 (_ bv4294967295 32)) (_ bv0 32))} main_#t~ret7 := l_open_#res;main_~file~0 := main_#t~ret7;havoc main_#t~ret7;call main_#t~malloc8.base, main_#t~malloc8.offset := #Ultimate.allocOnHeap(100bv32);main_~cbuf~0.base, main_~cbuf~0.offset := main_#t~malloc8.base, main_#t~malloc8.offset;l_read_#in~fd, l_read_#in~cbuf.base, l_read_#in~cbuf.offset, l_read_#in~count := main_~file~0, main_~cbuf~0.base, main_~cbuf~0.offset, 99bv32;havoc l_read_#res;havoc l_read_#t~ret10, l_read_~fd, l_read_~cbuf.base, l_read_~cbuf.offset, l_read_~count;l_read_~fd := l_read_#in~fd;l_read_~cbuf.base, l_read_~cbuf.offset := l_read_#in~cbuf.base, l_read_#in~cbuf.offset;l_read_~count := l_read_#in~count; {27#(= (bvadd ~globalState~0 (_ bv4294967295 32)) (_ bv0 32))} is VALID [2020-07-28 17:58:07,574 INFO L280 TraceCheckUtils]: 5: Hoare triple {27#(= (bvadd ~globalState~0 (_ bv4294967295 32)) (_ bv0 32))} assume !(1bv32 == ~globalState~0); {17#false} is VALID [2020-07-28 17:58:07,574 INFO L280 TraceCheckUtils]: 6: Hoare triple {17#false} assume !false; {17#false} is VALID [2020-07-28 17:58:07,577 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 17:58:07,578 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-28 17:58:07,597 INFO L280 TraceCheckUtils]: 6: Hoare triple {17#false} assume !false; {17#false} is VALID [2020-07-28 17:58:07,598 INFO L280 TraceCheckUtils]: 5: Hoare triple {27#(= (bvadd ~globalState~0 (_ bv4294967295 32)) (_ bv0 32))} assume !(1bv32 == ~globalState~0); {17#false} is VALID [2020-07-28 17:58:07,600 INFO L280 TraceCheckUtils]: 4: Hoare triple {27#(= (bvadd ~globalState~0 (_ bv4294967295 32)) (_ bv0 32))} main_#t~ret7 := l_open_#res;main_~file~0 := main_#t~ret7;havoc main_#t~ret7;call main_#t~malloc8.base, main_#t~malloc8.offset := #Ultimate.allocOnHeap(100bv32);main_~cbuf~0.base, main_~cbuf~0.offset := main_#t~malloc8.base, main_#t~malloc8.offset;l_read_#in~fd, l_read_#in~cbuf.base, l_read_#in~cbuf.offset, l_read_#in~count := main_~file~0, main_~cbuf~0.base, main_~cbuf~0.offset, 99bv32;havoc l_read_#res;havoc l_read_#t~ret10, l_read_~fd, l_read_~cbuf.base, l_read_~cbuf.offset, l_read_~count;l_read_~fd := l_read_#in~fd;l_read_~cbuf.base, l_read_~cbuf.offset := l_read_#in~cbuf.base, l_read_#in~cbuf.offset;l_read_~count := l_read_#in~count; {27#(= (bvadd ~globalState~0 (_ bv4294967295 32)) (_ bv0 32))} is VALID [2020-07-28 17:58:07,601 INFO L280 TraceCheckUtils]: 3: Hoare triple {27#(= (bvadd ~globalState~0 (_ bv4294967295 32)) (_ bv0 32))} l_open_#res := l_open_~fd~0; {27#(= (bvadd ~globalState~0 (_ bv4294967295 32)) (_ bv0 32))} is VALID [2020-07-28 17:58:07,603 INFO L280 TraceCheckUtils]: 2: Hoare triple {16#true} assume ~bvsgt32(l_open_~fd~0, 0bv32);~globalState~0 := 1bv32; {27#(= (bvadd ~globalState~0 (_ bv4294967295 32)) (_ bv0 32))} is VALID [2020-07-28 17:58:07,603 INFO L280 TraceCheckUtils]: 1: Hoare triple {16#true} main_#in~argc, main_#in~argv.base, main_#in~argv.offset := #in~argc, #in~argv.base, #in~argv.offset;havoc main_#res;havoc main_#t~ret7, main_#t~malloc8.base, main_#t~malloc8.offset, main_#t~ret9, main_~argc, main_~argv.base, main_~argv.offset, main_~file~0, main_~cbuf~0.base, main_~cbuf~0.offset, main_~a~0;main_~argc := main_#in~argc;main_~argv.base, main_~argv.offset := main_#in~argv.base, main_#in~argv.offset;l_open_#in~file.base, l_open_#in~file.offset, l_open_#in~flags := #t~string6.base, #t~string6.offset, 0bv32;havoc l_open_#res;havoc l_open_#t~nondet11, l_open_~file.base, l_open_~file.offset, l_open_~flags, l_open_~fd~0;l_open_~file.base, l_open_~file.offset := l_open_#in~file.base, l_open_#in~file.offset;l_open_~flags := l_open_#in~flags;havoc l_open_#t~nondet11;l_open_~fd~0 := l_open_#t~nondet11; {16#true} is VALID [2020-07-28 17:58:07,603 INFO L280 TraceCheckUtils]: 0: Hoare triple {16#true} #NULL.base, #NULL.offset := 0bv32, 0bv32;#valid := #valid[0bv32 := 0bv1];assume ~bvult32(0bv32, #StackHeapBarrier);currentRoundingMode := ~roundNearestTiesToEven;call #t~string6.base, #t~string6.offset := #Ultimate.allocOnStack(8bv32);~globalState~0 := 0bv32; {16#true} is VALID [2020-07-28 17:58:07,604 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 17:58:07,605 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [320755043] [2020-07-28 17:58:07,606 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-07-28 17:58:07,606 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2020-07-28 17:58:07,607 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [495322005] [2020-07-28 17:58:07,614 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 7 [2020-07-28 17:58:07,616 INFO L84 Accepts]: Finished accepts. word is accepted. [2020-07-28 17:58:07,621 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 3 states. [2020-07-28 17:58:07,642 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 7 edges. 7 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2020-07-28 17:58:07,642 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-28 17:58:07,643 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-07-28 17:58:07,653 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-28 17:58:07,654 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-28 17:58:07,656 INFO L87 Difference]: Start difference. First operand 13 states. Second operand 3 states. [2020-07-28 17:58:07,737 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-28 17:58:07,738 INFO L93 Difference]: Finished difference Result 23 states and 24 transitions. [2020-07-28 17:58:07,738 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-28 17:58:07,739 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 7 [2020-07-28 17:58:07,739 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-28 17:58:07,740 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-07-28 17:58:07,746 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 24 transitions. [2020-07-28 17:58:07,747 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-07-28 17:58:07,750 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 24 transitions. [2020-07-28 17:58:07,750 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 3 states and 24 transitions. [2020-07-28 17:58:07,793 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 24 edges. 24 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2020-07-28 17:58:07,803 INFO L225 Difference]: With dead ends: 23 [2020-07-28 17:58:07,803 INFO L226 Difference]: Without dead ends: 8 [2020-07-28 17:58:07,808 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-28 17:58:07,823 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8 states. [2020-07-28 17:58:07,837 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8 to 8. [2020-07-28 17:58:07,837 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2020-07-28 17:58:07,838 INFO L82 GeneralOperation]: Start isEquivalent. First operand 8 states. Second operand 8 states. [2020-07-28 17:58:07,839 INFO L74 IsIncluded]: Start isIncluded. First operand 8 states. Second operand 8 states. [2020-07-28 17:58:07,839 INFO L87 Difference]: Start difference. First operand 8 states. Second operand 8 states. [2020-07-28 17:58:07,841 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-28 17:58:07,841 INFO L93 Difference]: Finished difference Result 8 states and 7 transitions. [2020-07-28 17:58:07,841 INFO L276 IsEmpty]: Start isEmpty. Operand 8 states and 7 transitions. [2020-07-28 17:58:07,842 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-28 17:58:07,842 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2020-07-28 17:58:07,842 INFO L74 IsIncluded]: Start isIncluded. First operand 8 states. Second operand 8 states. [2020-07-28 17:58:07,842 INFO L87 Difference]: Start difference. First operand 8 states. Second operand 8 states. [2020-07-28 17:58:07,844 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-28 17:58:07,844 INFO L93 Difference]: Finished difference Result 8 states and 7 transitions. [2020-07-28 17:58:07,844 INFO L276 IsEmpty]: Start isEmpty. Operand 8 states and 7 transitions. [2020-07-28 17:58:07,845 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-28 17:58:07,845 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2020-07-28 17:58:07,845 INFO L88 GeneralOperation]: Finished isEquivalent. [2020-07-28 17:58:07,845 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2020-07-28 17:58:07,846 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2020-07-28 17:58:07,848 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 7 transitions. [2020-07-28 17:58:07,850 INFO L78 Accepts]: Start accepts. Automaton has 8 states and 7 transitions. Word has length 7 [2020-07-28 17:58:07,850 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-28 17:58:07,851 INFO L479 AbstractCegarLoop]: Abstraction has 8 states and 7 transitions. [2020-07-28 17:58:07,851 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-28 17:58:07,851 INFO L276 IsEmpty]: Start isEmpty. Operand 8 states and 7 transitions. [2020-07-28 17:58:07,851 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2020-07-28 17:58:07,851 INFO L414 BasicCegarLoop]: Found error trace [2020-07-28 17:58:07,852 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2020-07-28 17:58:08,052 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2020-07-28 17:58:08,053 INFO L427 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-28 17:58:08,053 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-28 17:58:08,053 INFO L82 PathProgramCache]: Analyzing trace with hash 1806812488, now seen corresponding path program 1 times [2020-07-28 17:58:08,054 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-07-28 17:58:08,054 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [652409634] [2020-07-28 17:58:08,057 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 17:58:08,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-28 17:58:08,128 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-07-28 17:58:08,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-28 17:58:08,150 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-07-28 17:58:08,185 INFO L174 FreeRefinementEngine]: Strategy WOLF found a feasible trace [2020-07-28 17:58:08,185 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-07-28 17:58:08,399 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 mathsat -unsat_core_generation=3 [2020-07-28 17:58:08,441 WARN L170 areAnnotationChecker]: ULTIMATE.startENTRY has no Hoare annotation [2020-07-28 17:58:08,441 WARN L170 areAnnotationChecker]: L-1 has no Hoare annotation [2020-07-28 17:58:08,441 WARN L170 areAnnotationChecker]: L1171 has no Hoare annotation [2020-07-28 17:58:08,442 WARN L170 areAnnotationChecker]: L1171 has no Hoare annotation [2020-07-28 17:58:08,442 WARN L170 areAnnotationChecker]: L1171-2 has no Hoare annotation [2020-07-28 17:58:08,442 WARN L170 areAnnotationChecker]: L1172 has no Hoare annotation [2020-07-28 17:58:08,442 WARN L170 areAnnotationChecker]: L1165 has no Hoare annotation [2020-07-28 17:58:08,442 WARN L170 areAnnotationChecker]: L1165 has no Hoare annotation [2020-07-28 17:58:08,442 WARN L170 areAnnotationChecker]: L958 has no Hoare annotation [2020-07-28 17:58:08,443 WARN L170 areAnnotationChecker]: L960 has no Hoare annotation [2020-07-28 17:58:08,443 WARN L170 areAnnotationChecker]: L960 has no Hoare annotation [2020-07-28 17:58:08,443 WARN L170 areAnnotationChecker]: L1166 has no Hoare annotation [2020-07-28 17:58:08,443 WARN L170 areAnnotationChecker]: L1161 has no Hoare annotation [2020-07-28 17:58:08,443 WARN L170 areAnnotationChecker]: ULTIMATE.startFINAL has no Hoare annotation [2020-07-28 17:58:08,444 INFO L163 areAnnotationChecker]: CFG has 0 edges. 0 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. 0 times interpolants missing. [2020-07-28 17:58:08,446 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.07 05:58:08 BoogieIcfgContainer [2020-07-28 17:58:08,446 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-28 17:58:08,447 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-07-28 17:58:08,447 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-07-28 17:58:08,447 INFO L275 PluginConnector]: Witness Printer initialized [2020-07-28 17:58:08,448 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.07 05:58:07" (3/4) ... [2020-07-28 17:58:08,452 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-07-28 17:58:08,452 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-07-28 17:58:08,455 INFO L168 Benchmark]: Toolchain (without parser) took 2398.09 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 146.8 MB). Free memory was 956.2 MB in the beginning and 1.0 GB in the end (delta: -70.8 MB). Peak memory consumption was 76.0 MB. Max. memory is 11.5 GB. [2020-07-28 17:58:08,456 INFO L168 Benchmark]: CDTParser took 0.29 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 17:58:08,457 INFO L168 Benchmark]: CACSL2BoogieTranslator took 655.99 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 146.8 MB). Free memory was 956.2 MB in the beginning and 1.1 GB in the end (delta: -164.8 MB). Peak memory consumption was 31.8 MB. Max. memory is 11.5 GB. [2020-07-28 17:58:08,458 INFO L168 Benchmark]: Boogie Procedure Inliner took 59.72 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 17:58:08,458 INFO L168 Benchmark]: Boogie Preprocessor took 32.75 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 6.6 MB). Peak memory consumption was 6.6 MB. Max. memory is 11.5 GB. [2020-07-28 17:58:08,459 INFO L168 Benchmark]: RCFGBuilder took 451.94 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: 17.7 MB). Peak memory consumption was 17.7 MB. Max. memory is 11.5 GB. [2020-07-28 17:58:08,460 INFO L168 Benchmark]: TraceAbstraction took 1183.34 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 69.7 MB). Peak memory consumption was 69.7 MB. Max. memory is 11.5 GB. [2020-07-28 17:58:08,461 INFO L168 Benchmark]: Witness Printer took 5.46 ms. Allocated memory is still 1.2 GB. Free memory is still 1.0 GB. There was no memory consumed. Max. memory is 11.5 GB. [2020-07-28 17:58:08,465 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 0.29 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 655.99 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 146.8 MB). Free memory was 956.2 MB in the beginning and 1.1 GB in the end (delta: -164.8 MB). Peak memory consumption was 31.8 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 59.72 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. * Boogie Preprocessor took 32.75 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 6.6 MB). Peak memory consumption was 6.6 MB. Max. memory is 11.5 GB. * RCFGBuilder took 451.94 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: 17.7 MB). Peak memory consumption was 17.7 MB. Max. memory is 11.5 GB. * TraceAbstraction took 1183.34 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 69.7 MB). Peak memory consumption was 69.7 MB. Max. memory is 11.5 GB. * Witness Printer took 5.46 ms. Allocated memory is still 1.2 GB. Free memory is still 1.0 GB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 960]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of large string literal at line 1158. Possible FailurePath: [L1152] int globalState = 0; VAL [globalState=0] [L1170] int fd = open(file,flags); VAL [globalState=0] [L1171] COND FALSE !(fd>0) VAL [globalState=0] [L1172] return fd; VAL [globalState=0] [L1158] int file = l_open("unknown",00); [L1159] void* cbuf = (void*) malloc(sizeof(char)*100); [L1165] (globalState == 1) ? (0) : __blast_assert () VAL [globalState=0] [L960] __VERIFIER_error() VAL [globalState=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 13 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 1.0s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 12 SDtfs, 5 SDslu, 5 SDs, 0 SdLazy, 3 SolverSat, 1 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 12 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=13occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 14 NumberOfCodeBlocks, 14 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 12 ConstructedInterpolants, 0 QuantifiedInterpolants, 216 SizeOfPredicates, 1 NumberOfNonLiveVariables, 48 ConjunctsInSsa, 2 ConjunctsInUnsatCore, 2 InterpolantComputations, 2 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 could not prove your program: unable to determine feasibility of some traces Received shutdown request...