./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/array-fpi/s2liff.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/array-fpi/s2liff.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 44f69c36eabb8010a84daabfeb373349427d64bf .......................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE --- Real Ultimate output --- This is Ultimate 0.1.25-8bd4bc6 [2020-07-28 14:55:21,664 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-28 14:55:21,667 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-28 14:55:21,680 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-28 14:55:21,681 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-28 14:55:21,682 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-28 14:55:21,684 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-28 14:55:21,686 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-28 14:55:21,688 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-28 14:55:21,689 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-28 14:55:21,691 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-28 14:55:21,692 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-28 14:55:21,693 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-28 14:55:21,694 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-28 14:55:21,695 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-28 14:55:21,697 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-28 14:55:21,698 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-28 14:55:21,700 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-28 14:55:21,702 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-28 14:55:21,704 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-28 14:55:21,706 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-28 14:55:21,708 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-28 14:55:21,709 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-28 14:55:21,711 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-28 14:55:21,714 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-07-28 14:55:21,714 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-07-28 14:55:21,715 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-07-28 14:55:21,716 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-07-28 14:55:21,717 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-07-28 14:55:21,718 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-07-28 14:55:21,718 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-07-28 14:55:21,719 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-07-28 14:55:21,721 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-07-28 14:55:21,722 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-07-28 14:55:21,723 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-07-28 14:55:21,723 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-07-28 14:55:21,724 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-07-28 14:55:21,725 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-07-28 14:55:21,725 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-28 14:55:21,726 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-28 14:55:21,727 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-28 14:55:21,728 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2020-07-28 14:55:21,744 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-28 14:55:21,744 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-28 14:55:21,745 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-28 14:55:21,746 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-28 14:55:21,746 INFO L138 SettingsManager]: * Use SBE=true [2020-07-28 14:55:21,747 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-28 14:55:21,747 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-28 14:55:21,747 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-28 14:55:21,747 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-28 14:55:21,748 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-28 14:55:21,748 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-28 14:55:21,748 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-28 14:55:21,749 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-28 14:55:21,749 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-28 14:55:21,749 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-28 14:55:21,749 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-28 14:55:21,750 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-28 14:55:21,750 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-28 14:55:21,750 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-28 14:55:21,751 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-28 14:55:21,751 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-28 14:55:21,751 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-28 14:55:21,751 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-28 14:55:21,752 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-07-28 14:55:21,752 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-07-28 14:55:21,752 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-07-28 14:55:21,753 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-28 14:55:21,753 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-28 14:55:21,753 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-07-28 14:55:21,753 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 -> 44f69c36eabb8010a84daabfeb373349427d64bf [2020-07-28 14:55:22,120 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-28 14:55:22,137 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-28 14:55:22,142 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-28 14:55:22,143 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-28 14:55:22,144 INFO L275 PluginConnector]: CDTParser initialized [2020-07-28 14:55:22,145 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/array-fpi/s2liff.c [2020-07-28 14:55:22,216 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2bbd80502/cfe0d55f702f4625a1016f402194f404/FLAG096bc6572 [2020-07-28 14:55:22,687 INFO L306 CDTParser]: Found 1 translation units. [2020-07-28 14:55:22,688 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-fpi/s2liff.c [2020-07-28 14:55:22,697 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2bbd80502/cfe0d55f702f4625a1016f402194f404/FLAG096bc6572 [2020-07-28 14:55:23,082 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2bbd80502/cfe0d55f702f4625a1016f402194f404 [2020-07-28 14:55:23,086 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-28 14:55:23,089 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-07-28 14:55:23,090 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-28 14:55:23,090 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-28 14:55:23,094 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-28 14:55:23,096 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.07 02:55:23" (1/1) ... [2020-07-28 14:55:23,099 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1694e97a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 02:55:23, skipping insertion in model container [2020-07-28 14:55:23,100 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.07 02:55:23" (1/1) ... [2020-07-28 14:55:23,108 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-28 14:55:23,132 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-28 14:55:23,336 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-28 14:55:23,347 INFO L203 MainTranslator]: Completed pre-run [2020-07-28 14:55:23,374 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-28 14:55:23,464 INFO L208 MainTranslator]: Completed translation [2020-07-28 14:55:23,465 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 02:55:23 WrapperNode [2020-07-28 14:55:23,465 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-28 14:55:23,467 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-07-28 14:55:23,468 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-07-28 14:55:23,468 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-07-28 14:55:23,479 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 02:55:23" (1/1) ... [2020-07-28 14:55:23,505 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 02:55:23" (1/1) ... [2020-07-28 14:55:23,556 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-07-28 14:55:23,559 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-28 14:55:23,559 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-28 14:55:23,559 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-28 14:55:23,571 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 02:55:23" (1/1) ... [2020-07-28 14:55:23,572 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 02:55:23" (1/1) ... [2020-07-28 14:55:23,574 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 02:55:23" (1/1) ... [2020-07-28 14:55:23,575 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 02:55:23" (1/1) ... [2020-07-28 14:55:23,582 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 02:55:23" (1/1) ... [2020-07-28 14:55:23,588 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 02:55:23" (1/1) ... [2020-07-28 14:55:23,590 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 02:55:23" (1/1) ... [2020-07-28 14:55:23,592 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-28 14:55:23,593 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-28 14:55:23,593 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-28 14:55:23,594 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-28 14:55:23,595 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 02:55:23" (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 14:55:23,668 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-07-28 14:55:23,669 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-07-28 14:55:23,669 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-07-28 14:55:23,669 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-28 14:55:23,670 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-28 14:55:23,670 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-07-28 14:55:23,670 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-07-28 14:55:24,051 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-28 14:55:24,052 INFO L295 CfgBuilder]: Removed 11 assume(true) statements. [2020-07-28 14:55:24,055 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.07 02:55:24 BoogieIcfgContainer [2020-07-28 14:55:24,056 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-28 14:55:24,057 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-28 14:55:24,058 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-28 14:55:24,061 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-28 14:55:24,062 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.07 02:55:23" (1/3) ... [2020-07-28 14:55:24,063 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@578e77d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.07 02:55:24, skipping insertion in model container [2020-07-28 14:55:24,063 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 02:55:23" (2/3) ... [2020-07-28 14:55:24,064 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@578e77d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.07 02:55:24, skipping insertion in model container [2020-07-28 14:55:24,064 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.07 02:55:24" (3/3) ... [2020-07-28 14:55:24,066 INFO L109 eAbstractionObserver]: Analyzing ICFG s2liff.c [2020-07-28 14:55:24,079 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-07-28 14:55:24,087 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-28 14:55:24,114 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-28 14:55:24,149 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-28 14:55:24,149 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-28 14:55:24,149 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-07-28 14:55:24,150 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-28 14:55:24,150 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-28 14:55:24,150 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-28 14:55:24,151 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-28 14:55:24,151 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-28 14:55:24,166 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states. [2020-07-28 14:55:24,172 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-07-28 14:55:24,173 INFO L414 BasicCegarLoop]: Found error trace [2020-07-28 14:55:24,174 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-28 14:55:24,174 INFO L427 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-28 14:55:24,179 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-28 14:55:24,179 INFO L82 PathProgramCache]: Analyzing trace with hash -845640729, now seen corresponding path program 1 times [2020-07-28 14:55:24,187 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-28 14:55:24,188 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2109861561] [2020-07-28 14:55:24,188 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-28 14:55:24,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-28 14:55:24,336 INFO L280 TraceCheckUtils]: 0: Hoare triple {25#true} #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;~N~0 := 0; {25#true} is VALID [2020-07-28 14:55:24,337 INFO L280 TraceCheckUtils]: 1: Hoare triple {25#true} havoc main_#res;havoc main_#t~nondet0, main_#t~malloc1.base, main_#t~malloc1.offset, main_#t~post2, main_#t~mem4, main_#t~mem5, main_#t~mem6, main_#t~post3, main_#t~mem8, main_#t~mem9, main_#t~post7, main_#t~mem10, main_~i~0, main_~#sum~0.base, main_~#sum~0.offset, main_~a~0.base, main_~a~0.offset;assume -2147483648 <= main_#t~nondet0 && main_#t~nondet0 <= 2147483647;~N~0 := main_#t~nondet0;havoc main_#t~nondet0; {25#true} is VALID [2020-07-28 14:55:24,337 INFO L280 TraceCheckUtils]: 2: Hoare triple {25#true} assume !(~N~0 <= 0);assume_abort_if_not_#in~cond := (if ~N~0 <= 536870911 then 1 else 0);havoc assume_abort_if_not_~cond;assume_abort_if_not_~cond := assume_abort_if_not_#in~cond; {25#true} is VALID [2020-07-28 14:55:24,339 INFO L280 TraceCheckUtils]: 3: Hoare triple {25#true} assume 0 == assume_abort_if_not_~cond;assume false; {26#false} is VALID [2020-07-28 14:55:24,339 INFO L280 TraceCheckUtils]: 4: Hoare triple {26#false} havoc main_~i~0;call main_~#sum~0.base, main_~#sum~0.offset := #Ultimate.allocOnStack(8);call main_#t~malloc1.base, main_#t~malloc1.offset := #Ultimate.allocOnHeap(4 * ~N~0);main_~a~0.base, main_~a~0.offset := main_#t~malloc1.base, main_#t~malloc1.offset;call write~int(~N~0, main_~#sum~0.base, main_~#sum~0.offset, 8);main_~i~0 := 0; {26#false} is VALID [2020-07-28 14:55:24,339 INFO L280 TraceCheckUtils]: 5: Hoare triple {26#false} assume !(main_~i~0 < ~N~0); {26#false} is VALID [2020-07-28 14:55:24,340 INFO L280 TraceCheckUtils]: 6: Hoare triple {26#false} main_~i~0 := 0; {26#false} is VALID [2020-07-28 14:55:24,340 INFO L280 TraceCheckUtils]: 7: Hoare triple {26#false} assume !(main_~i~0 < ~N~0); {26#false} is VALID [2020-07-28 14:55:24,340 INFO L280 TraceCheckUtils]: 8: Hoare triple {26#false} main_~i~0 := 0; {26#false} is VALID [2020-07-28 14:55:24,341 INFO L280 TraceCheckUtils]: 9: Hoare triple {26#false} assume !(main_~i~0 < ~N~0); {26#false} is VALID [2020-07-28 14:55:24,341 INFO L280 TraceCheckUtils]: 10: Hoare triple {26#false} call main_#t~mem10 := read~int(main_~#sum~0.base, main_~#sum~0.offset, 8);__VERIFIER_assert_#in~cond := (if main_#t~mem10 == 3 * ~N~0 then 1 else 0);havoc __VERIFIER_assert_~cond;__VERIFIER_assert_~cond := __VERIFIER_assert_#in~cond; {26#false} is VALID [2020-07-28 14:55:24,341 INFO L280 TraceCheckUtils]: 11: Hoare triple {26#false} assume 0 == __VERIFIER_assert_~cond; {26#false} is VALID [2020-07-28 14:55:24,342 INFO L280 TraceCheckUtils]: 12: Hoare triple {26#false} assume !false; {26#false} is VALID [2020-07-28 14:55:24,345 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 14:55:24,346 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2109861561] [2020-07-28 14:55:24,347 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-28 14:55:24,348 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-07-28 14:55:24,348 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [629956932] [2020-07-28 14:55:24,355 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 13 [2020-07-28 14:55:24,356 INFO L84 Accepts]: Finished accepts. word is accepted. [2020-07-28 14:55:24,360 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 2 states. [2020-07-28 14:55:24,407 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 13 edges. 13 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2020-07-28 14:55:24,407 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-07-28 14:55:24,407 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-28 14:55:24,416 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-07-28 14:55:24,417 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-07-28 14:55:24,420 INFO L87 Difference]: Start difference. First operand 22 states. Second operand 2 states. [2020-07-28 14:55:24,478 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-28 14:55:24,479 INFO L93 Difference]: Finished difference Result 40 states and 56 transitions. [2020-07-28 14:55:24,479 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-07-28 14:55:24,480 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 13 [2020-07-28 14:55:24,480 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-28 14:55:24,481 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2020-07-28 14:55:24,491 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 56 transitions. [2020-07-28 14:55:24,491 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2020-07-28 14:55:24,496 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 56 transitions. [2020-07-28 14:55:24,496 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 2 states and 56 transitions. [2020-07-28 14:55:24,592 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 56 edges. 56 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2020-07-28 14:55:24,603 INFO L225 Difference]: With dead ends: 40 [2020-07-28 14:55:24,603 INFO L226 Difference]: Without dead ends: 18 [2020-07-28 14:55:24,607 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-07-28 14:55:24,626 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2020-07-28 14:55:24,640 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2020-07-28 14:55:24,640 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2020-07-28 14:55:24,641 INFO L82 GeneralOperation]: Start isEquivalent. First operand 18 states. Second operand 18 states. [2020-07-28 14:55:24,641 INFO L74 IsIncluded]: Start isIncluded. First operand 18 states. Second operand 18 states. [2020-07-28 14:55:24,641 INFO L87 Difference]: Start difference. First operand 18 states. Second operand 18 states. [2020-07-28 14:55:24,644 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-28 14:55:24,645 INFO L93 Difference]: Finished difference Result 18 states and 21 transitions. [2020-07-28 14:55:24,645 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 21 transitions. [2020-07-28 14:55:24,646 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-28 14:55:24,646 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2020-07-28 14:55:24,646 INFO L74 IsIncluded]: Start isIncluded. First operand 18 states. Second operand 18 states. [2020-07-28 14:55:24,646 INFO L87 Difference]: Start difference. First operand 18 states. Second operand 18 states. [2020-07-28 14:55:24,649 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-28 14:55:24,649 INFO L93 Difference]: Finished difference Result 18 states and 21 transitions. [2020-07-28 14:55:24,650 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 21 transitions. [2020-07-28 14:55:24,650 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-28 14:55:24,650 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2020-07-28 14:55:24,651 INFO L88 GeneralOperation]: Finished isEquivalent. [2020-07-28 14:55:24,651 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2020-07-28 14:55:24,651 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2020-07-28 14:55:24,653 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 21 transitions. [2020-07-28 14:55:24,655 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 21 transitions. Word has length 13 [2020-07-28 14:55:24,656 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-28 14:55:24,656 INFO L479 AbstractCegarLoop]: Abstraction has 18 states and 21 transitions. [2020-07-28 14:55:24,656 INFO L480 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-07-28 14:55:24,657 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 21 transitions. [2020-07-28 14:55:24,657 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-07-28 14:55:24,658 INFO L414 BasicCegarLoop]: Found error trace [2020-07-28 14:55:24,658 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-28 14:55:24,658 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-07-28 14:55:24,659 INFO L427 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-28 14:55:24,659 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-28 14:55:24,659 INFO L82 PathProgramCache]: Analyzing trace with hash -1238667739, now seen corresponding path program 1 times [2020-07-28 14:55:24,660 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-28 14:55:24,660 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [145727938] [2020-07-28 14:55:24,661 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-28 14:55:24,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-28 14:55:24,779 INFO L280 TraceCheckUtils]: 0: Hoare triple {134#true} #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;~N~0 := 0; {134#true} is VALID [2020-07-28 14:55:24,779 INFO L280 TraceCheckUtils]: 1: Hoare triple {134#true} havoc main_#res;havoc main_#t~nondet0, main_#t~malloc1.base, main_#t~malloc1.offset, main_#t~post2, main_#t~mem4, main_#t~mem5, main_#t~mem6, main_#t~post3, main_#t~mem8, main_#t~mem9, main_#t~post7, main_#t~mem10, main_~i~0, main_~#sum~0.base, main_~#sum~0.offset, main_~a~0.base, main_~a~0.offset;assume -2147483648 <= main_#t~nondet0 && main_#t~nondet0 <= 2147483647;~N~0 := main_#t~nondet0;havoc main_#t~nondet0; {134#true} is VALID [2020-07-28 14:55:24,781 INFO L280 TraceCheckUtils]: 2: Hoare triple {134#true} assume !(~N~0 <= 0);assume_abort_if_not_#in~cond := (if ~N~0 <= 536870911 then 1 else 0);havoc assume_abort_if_not_~cond;assume_abort_if_not_~cond := assume_abort_if_not_#in~cond; {136#(<= 1 ~N~0)} is VALID [2020-07-28 14:55:24,782 INFO L280 TraceCheckUtils]: 3: Hoare triple {136#(<= 1 ~N~0)} assume !(0 == assume_abort_if_not_~cond); {136#(<= 1 ~N~0)} is VALID [2020-07-28 14:55:24,784 INFO L280 TraceCheckUtils]: 4: Hoare triple {136#(<= 1 ~N~0)} havoc main_~i~0;call main_~#sum~0.base, main_~#sum~0.offset := #Ultimate.allocOnStack(8);call main_#t~malloc1.base, main_#t~malloc1.offset := #Ultimate.allocOnHeap(4 * ~N~0);main_~a~0.base, main_~a~0.offset := main_#t~malloc1.base, main_#t~malloc1.offset;call write~int(~N~0, main_~#sum~0.base, main_~#sum~0.offset, 8);main_~i~0 := 0; {137#(and (= 0 ULTIMATE.start_main_~i~0) (<= 1 ~N~0))} is VALID [2020-07-28 14:55:24,785 INFO L280 TraceCheckUtils]: 5: Hoare triple {137#(and (= 0 ULTIMATE.start_main_~i~0) (<= 1 ~N~0))} assume !(main_~i~0 < ~N~0); {135#false} is VALID [2020-07-28 14:55:24,785 INFO L280 TraceCheckUtils]: 6: Hoare triple {135#false} main_~i~0 := 0; {135#false} is VALID [2020-07-28 14:55:24,786 INFO L280 TraceCheckUtils]: 7: Hoare triple {135#false} assume !(main_~i~0 < ~N~0); {135#false} is VALID [2020-07-28 14:55:24,786 INFO L280 TraceCheckUtils]: 8: Hoare triple {135#false} main_~i~0 := 0; {135#false} is VALID [2020-07-28 14:55:24,786 INFO L280 TraceCheckUtils]: 9: Hoare triple {135#false} assume !(main_~i~0 < ~N~0); {135#false} is VALID [2020-07-28 14:55:24,787 INFO L280 TraceCheckUtils]: 10: Hoare triple {135#false} call main_#t~mem10 := read~int(main_~#sum~0.base, main_~#sum~0.offset, 8);__VERIFIER_assert_#in~cond := (if main_#t~mem10 == 3 * ~N~0 then 1 else 0);havoc __VERIFIER_assert_~cond;__VERIFIER_assert_~cond := __VERIFIER_assert_#in~cond; {135#false} is VALID [2020-07-28 14:55:24,787 INFO L280 TraceCheckUtils]: 11: Hoare triple {135#false} assume 0 == __VERIFIER_assert_~cond; {135#false} is VALID [2020-07-28 14:55:24,787 INFO L280 TraceCheckUtils]: 12: Hoare triple {135#false} assume !false; {135#false} is VALID [2020-07-28 14:55:24,788 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 14:55:24,789 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [145727938] [2020-07-28 14:55:24,789 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-28 14:55:24,789 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-07-28 14:55:24,790 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1603980213] [2020-07-28 14:55:24,791 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 13 [2020-07-28 14:55:24,792 INFO L84 Accepts]: Finished accepts. word is accepted. [2020-07-28 14:55:24,792 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 4 states. [2020-07-28 14:55:24,814 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 13 edges. 13 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2020-07-28 14:55:24,814 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-07-28 14:55:24,814 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-28 14:55:24,815 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-07-28 14:55:24,815 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-07-28 14:55:24,815 INFO L87 Difference]: Start difference. First operand 18 states and 21 transitions. Second operand 4 states. [2020-07-28 14:55:24,970 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-28 14:55:24,971 INFO L93 Difference]: Finished difference Result 36 states and 45 transitions. [2020-07-28 14:55:24,971 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-07-28 14:55:24,971 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 13 [2020-07-28 14:55:24,971 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-28 14:55:24,972 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2020-07-28 14:55:24,974 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 45 transitions. [2020-07-28 14:55:24,974 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2020-07-28 14:55:24,976 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 45 transitions. [2020-07-28 14:55:24,976 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 4 states and 45 transitions. [2020-07-28 14:55:25,053 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 45 edges. 45 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2020-07-28 14:55:25,055 INFO L225 Difference]: With dead ends: 36 [2020-07-28 14:55:25,055 INFO L226 Difference]: Without dead ends: 25 [2020-07-28 14:55:25,056 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-07-28 14:55:25,057 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2020-07-28 14:55:25,070 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 21. [2020-07-28 14:55:25,070 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2020-07-28 14:55:25,070 INFO L82 GeneralOperation]: Start isEquivalent. First operand 25 states. Second operand 21 states. [2020-07-28 14:55:25,071 INFO L74 IsIncluded]: Start isIncluded. First operand 25 states. Second operand 21 states. [2020-07-28 14:55:25,071 INFO L87 Difference]: Start difference. First operand 25 states. Second operand 21 states. [2020-07-28 14:55:25,073 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-28 14:55:25,073 INFO L93 Difference]: Finished difference Result 25 states and 29 transitions. [2020-07-28 14:55:25,073 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 29 transitions. [2020-07-28 14:55:25,074 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-28 14:55:25,074 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2020-07-28 14:55:25,074 INFO L74 IsIncluded]: Start isIncluded. First operand 21 states. Second operand 25 states. [2020-07-28 14:55:25,075 INFO L87 Difference]: Start difference. First operand 21 states. Second operand 25 states. [2020-07-28 14:55:25,077 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-28 14:55:25,077 INFO L93 Difference]: Finished difference Result 25 states and 29 transitions. [2020-07-28 14:55:25,077 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 29 transitions. [2020-07-28 14:55:25,078 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-28 14:55:25,078 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2020-07-28 14:55:25,078 INFO L88 GeneralOperation]: Finished isEquivalent. [2020-07-28 14:55:25,078 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2020-07-28 14:55:25,079 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2020-07-28 14:55:25,080 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 24 transitions. [2020-07-28 14:55:25,081 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 24 transitions. Word has length 13 [2020-07-28 14:55:25,081 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-28 14:55:25,081 INFO L479 AbstractCegarLoop]: Abstraction has 21 states and 24 transitions. [2020-07-28 14:55:25,081 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-07-28 14:55:25,081 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 24 transitions. [2020-07-28 14:55:25,082 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-07-28 14:55:25,082 INFO L414 BasicCegarLoop]: Found error trace [2020-07-28 14:55:25,082 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-28 14:55:25,083 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-07-28 14:55:25,083 INFO L427 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-28 14:55:25,083 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-28 14:55:25,083 INFO L82 PathProgramCache]: Analyzing trace with hash 2001188913, now seen corresponding path program 1 times [2020-07-28 14:55:25,084 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-28 14:55:25,084 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [82650580] [2020-07-28 14:55:25,084 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-28 14:55:25,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-28 14:55:25,132 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-07-28 14:55:25,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-28 14:55:25,182 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-07-28 14:55:25,212 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-07-28 14:55:25,213 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-07-28 14:55:25,213 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-07-28 14:55:25,259 WARN L170 areAnnotationChecker]: ULTIMATE.startENTRY has no Hoare annotation [2020-07-28 14:55:25,259 WARN L170 areAnnotationChecker]: L-1 has no Hoare annotation [2020-07-28 14:55:25,259 WARN L170 areAnnotationChecker]: L22 has no Hoare annotation [2020-07-28 14:55:25,259 WARN L170 areAnnotationChecker]: L22 has no Hoare annotation [2020-07-28 14:55:25,260 WARN L170 areAnnotationChecker]: L50 has no Hoare annotation [2020-07-28 14:55:25,260 WARN L170 areAnnotationChecker]: L11 has no Hoare annotation [2020-07-28 14:55:25,260 WARN L170 areAnnotationChecker]: L11 has no Hoare annotation [2020-07-28 14:55:25,260 WARN L170 areAnnotationChecker]: ULTIMATE.startFINAL has no Hoare annotation [2020-07-28 14:55:25,261 WARN L170 areAnnotationChecker]: L10 has no Hoare annotation [2020-07-28 14:55:25,261 WARN L170 areAnnotationChecker]: L30-3 has no Hoare annotation [2020-07-28 14:55:25,261 WARN L170 areAnnotationChecker]: L30-3 has no Hoare annotation [2020-07-28 14:55:25,261 WARN L170 areAnnotationChecker]: L30-3 has no Hoare annotation [2020-07-28 14:55:25,262 WARN L170 areAnnotationChecker]: L30-4 has no Hoare annotation [2020-07-28 14:55:25,262 WARN L170 areAnnotationChecker]: L30-2 has no Hoare annotation [2020-07-28 14:55:25,262 WARN L170 areAnnotationChecker]: L35-3 has no Hoare annotation [2020-07-28 14:55:25,262 WARN L170 areAnnotationChecker]: L35-3 has no Hoare annotation [2020-07-28 14:55:25,262 WARN L170 areAnnotationChecker]: L35-3 has no Hoare annotation [2020-07-28 14:55:25,263 WARN L170 areAnnotationChecker]: L35-4 has no Hoare annotation [2020-07-28 14:55:25,263 WARN L170 areAnnotationChecker]: L37 has no Hoare annotation [2020-07-28 14:55:25,263 WARN L170 areAnnotationChecker]: L37 has no Hoare annotation [2020-07-28 14:55:25,263 WARN L170 areAnnotationChecker]: L44-3 has no Hoare annotation [2020-07-28 14:55:25,264 WARN L170 areAnnotationChecker]: L44-3 has no Hoare annotation [2020-07-28 14:55:25,264 WARN L170 areAnnotationChecker]: L44-3 has no Hoare annotation [2020-07-28 14:55:25,264 WARN L170 areAnnotationChecker]: L35-2 has no Hoare annotation [2020-07-28 14:55:25,264 WARN L170 areAnnotationChecker]: L44-4 has no Hoare annotation [2020-07-28 14:55:25,265 WARN L170 areAnnotationChecker]: L44-2 has no Hoare annotation [2020-07-28 14:55:25,265 WARN L170 areAnnotationChecker]: L13 has no Hoare annotation [2020-07-28 14:55:25,265 WARN L170 areAnnotationChecker]: L13 has no Hoare annotation [2020-07-28 14:55:25,265 WARN L170 areAnnotationChecker]: L13-1 has no Hoare annotation [2020-07-28 14:55:25,266 WARN L170 areAnnotationChecker]: L13-1 has no Hoare annotation [2020-07-28 14:55:25,266 WARN L170 areAnnotationChecker]: L13-3 has no Hoare annotation [2020-07-28 14:55:25,266 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 14:55:25,269 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.07 02:55:25 BoogieIcfgContainer [2020-07-28 14:55:25,269 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-28 14:55:25,270 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-07-28 14:55:25,270 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-07-28 14:55:25,270 INFO L275 PluginConnector]: Witness Printer initialized [2020-07-28 14:55:25,271 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.07 02:55:24" (3/4) ... [2020-07-28 14:55:25,274 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2020-07-28 14:55:25,365 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2020-07-28 14:55:25,366 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-07-28 14:55:25,369 INFO L168 Benchmark]: Toolchain (without parser) took 2281.13 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 124.8 MB). Free memory was 961.6 MB in the beginning and 989.5 MB in the end (delta: -28.0 MB). Peak memory consumption was 96.8 MB. Max. memory is 11.5 GB. [2020-07-28 14:55:25,370 INFO L168 Benchmark]: CDTParser took 0.79 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 14:55:25,371 INFO L168 Benchmark]: CACSL2BoogieTranslator took 375.68 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 124.8 MB). Free memory was 961.6 MB in the beginning and 1.1 GB in the end (delta: -157.3 MB). Peak memory consumption was 20.5 MB. Max. memory is 11.5 GB. [2020-07-28 14:55:25,372 INFO L168 Benchmark]: Boogie Procedure Inliner took 90.97 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: 6.9 MB). Peak memory consumption was 6.9 MB. Max. memory is 11.5 GB. [2020-07-28 14:55:25,372 INFO L168 Benchmark]: Boogie Preprocessor took 34.20 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 14:55:25,373 INFO L168 Benchmark]: RCFGBuilder took 462.88 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 26.1 MB). Peak memory consumption was 26.1 MB. Max. memory is 11.5 GB. [2020-07-28 14:55:25,374 INFO L168 Benchmark]: TraceAbstraction took 1211.97 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 989.5 MB in the end (delta: 96.3 MB). Peak memory consumption was 96.3 MB. Max. memory is 11.5 GB. [2020-07-28 14:55:25,374 INFO L168 Benchmark]: Witness Printer took 96.49 ms. Allocated memory is still 1.2 GB. Free memory is still 989.5 MB. There was no memory consumed. Max. memory is 11.5 GB. [2020-07-28 14:55:25,377 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 0.79 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 375.68 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 124.8 MB). Free memory was 961.6 MB in the beginning and 1.1 GB in the end (delta: -157.3 MB). Peak memory consumption was 20.5 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 90.97 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: 6.9 MB). Peak memory consumption was 6.9 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 34.20 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 462.88 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 26.1 MB). Peak memory consumption was 26.1 MB. Max. memory is 11.5 GB. * TraceAbstraction took 1211.97 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 989.5 MB in the end (delta: 96.3 MB). Peak memory consumption was 96.3 MB. Max. memory is 11.5 GB. * Witness Printer took 96.49 ms. Allocated memory is still 1.2 GB. Free memory is still 989.5 MB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 13]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L17] int N; VAL [N=0] [L21] N = __VERIFIER_nondet_int() [L22] COND FALSE !(N <= 0) [L11] COND FALSE !(!cond) VAL [N=1] [L25] int i; [L26] long long sum[1]; [L27] int *a = malloc(sizeof(int)*N); [L29] sum[0] = N [L30] i=0 VAL [N=1] [L30] COND TRUE i