./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/array-fpi/s32iff.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 9a8b2e8d Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/array-fpi/s32iff.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(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash b7762dd94861286cddfea5d4ba6d0215ac8258ba .......................................................................................................................................................................................................................................................................................................................................................... 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 0.1.25-9a8b2e8 [2020-10-19 22:17:10,743 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-19 22:17:10,746 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-19 22:17:10,789 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-19 22:17:10,790 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-19 22:17:10,799 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-19 22:17:10,801 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-19 22:17:10,805 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-19 22:17:10,808 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-19 22:17:10,812 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-19 22:17:10,814 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-19 22:17:10,816 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-19 22:17:10,816 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-19 22:17:10,820 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-19 22:17:10,821 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-19 22:17:10,823 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-19 22:17:10,824 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-19 22:17:10,825 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-19 22:17:10,829 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-19 22:17:10,838 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-19 22:17:10,840 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-19 22:17:10,851 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-19 22:17:10,854 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-19 22:17:10,855 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-19 22:17:10,867 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-19 22:17:10,867 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-19 22:17:10,867 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-19 22:17:10,868 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-19 22:17:10,871 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-19 22:17:10,872 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-19 22:17:10,873 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-19 22:17:10,874 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-19 22:17:10,876 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-19 22:17:10,877 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-19 22:17:10,881 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-19 22:17:10,881 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-19 22:17:10,882 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-19 22:17:10,883 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-19 22:17:10,885 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-19 22:17:10,886 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-19 22:17:10,887 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-19 22:17:10,890 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-19 22:17:10,929 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-19 22:17:10,929 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-19 22:17:10,931 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-19 22:17:10,932 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-19 22:17:10,932 INFO L138 SettingsManager]: * Use SBE=true [2020-10-19 22:17:10,932 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-19 22:17:10,932 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-19 22:17:10,933 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-19 22:17:10,933 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-19 22:17:10,933 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-19 22:17:10,934 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-19 22:17:10,935 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-19 22:17:10,935 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-19 22:17:10,935 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-19 22:17:10,936 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-19 22:17:10,936 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-19 22:17:10,936 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-19 22:17:10,936 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-19 22:17:10,937 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-19 22:17:10,937 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-19 22:17:10,937 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-19 22:17:10,938 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-19 22:17:10,938 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-19 22:17:10,938 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-19 22:17:10,938 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-19 22:17:10,939 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-19 22:17:10,939 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-19 22:17:10,940 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-19 22:17:10,940 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-19 22:17:10,940 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b7762dd94861286cddfea5d4ba6d0215ac8258ba [2020-10-19 22:17:11,130 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-19 22:17:11,139 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-19 22:17:11,144 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-19 22:17:11,146 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-19 22:17:11,146 INFO L275 PluginConnector]: CDTParser initialized [2020-10-19 22:17:11,147 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/array-fpi/s32iff.c [2020-10-19 22:17:11,232 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ffa55e657/7fe541583f454f338cbd435b65d95404/FLAG0b7760cf8 [2020-10-19 22:17:11,680 INFO L306 CDTParser]: Found 1 translation units. [2020-10-19 22:17:11,681 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-fpi/s32iff.c [2020-10-19 22:17:11,689 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ffa55e657/7fe541583f454f338cbd435b65d95404/FLAG0b7760cf8 [2020-10-19 22:17:12,098 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ffa55e657/7fe541583f454f338cbd435b65d95404 [2020-10-19 22:17:12,101 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-19 22:17:12,108 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-10-19 22:17:12,109 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-19 22:17:12,110 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-19 22:17:12,113 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-19 22:17:12,114 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.10 10:17:12" (1/1) ... [2020-10-19 22:17:12,118 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@39650d05 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 10:17:12, skipping insertion in model container [2020-10-19 22:17:12,118 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.10 10:17:12" (1/1) ... [2020-10-19 22:17:12,126 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-19 22:17:12,145 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-19 22:17:12,419 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-19 22:17:12,428 INFO L203 MainTranslator]: Completed pre-run [2020-10-19 22:17:12,450 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-19 22:17:12,467 INFO L208 MainTranslator]: Completed translation [2020-10-19 22:17:12,467 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 10:17:12 WrapperNode [2020-10-19 22:17:12,468 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-19 22:17:12,468 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-19 22:17:12,469 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-19 22:17:12,469 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-19 22:17:12,478 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 10:17:12" (1/1) ... [2020-10-19 22:17:12,488 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 10:17:12" (1/1) ... [2020-10-19 22:17:12,511 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-19 22:17:12,512 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-19 22:17:12,512 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-19 22:17:12,512 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-19 22:17:12,522 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 10:17:12" (1/1) ... [2020-10-19 22:17:12,522 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 10:17:12" (1/1) ... [2020-10-19 22:17:12,532 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 10:17:12" (1/1) ... [2020-10-19 22:17:12,533 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 10:17:12" (1/1) ... [2020-10-19 22:17:12,540 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 10:17:12" (1/1) ... [2020-10-19 22:17:12,546 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 10:17:12" (1/1) ... [2020-10-19 22:17:12,548 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 10:17:12" (1/1) ... [2020-10-19 22:17:12,551 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-19 22:17:12,552 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-19 22:17:12,552 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-19 22:17:12,552 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-19 22:17:12,553 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 10:17:12" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-19 22:17:12,617 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-19 22:17:12,617 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-19 22:17:12,617 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-19 22:17:12,618 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-10-19 22:17:12,618 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-19 22:17:12,619 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-19 22:17:12,619 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-19 22:17:12,619 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-19 22:17:12,992 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-19 22:17:12,994 INFO L298 CfgBuilder]: Removed 13 assume(true) statements. [2020-10-19 22:17:12,996 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.10 10:17:12 BoogieIcfgContainer [2020-10-19 22:17:12,996 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-19 22:17:12,997 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-19 22:17:12,998 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-19 22:17:13,000 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-19 22:17:13,001 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.10 10:17:12" (1/3) ... [2020-10-19 22:17:13,001 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@24c6f46d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.10 10:17:13, skipping insertion in model container [2020-10-19 22:17:13,002 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 10:17:12" (2/3) ... [2020-10-19 22:17:13,002 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@24c6f46d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.10 10:17:13, skipping insertion in model container [2020-10-19 22:17:13,002 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.10 10:17:12" (3/3) ... [2020-10-19 22:17:13,004 INFO L111 eAbstractionObserver]: Analyzing ICFG s32iff.c [2020-10-19 22:17:13,014 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-19 22:17:13,021 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-19 22:17:13,032 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-19 22:17:13,063 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-19 22:17:13,063 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-19 22:17:13,064 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-19 22:17:13,064 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-19 22:17:13,064 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-19 22:17:13,064 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-19 22:17:13,064 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-19 22:17:13,065 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-19 22:17:13,081 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states. [2020-10-19 22:17:13,087 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-19 22:17:13,087 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 22:17:13,088 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 22:17:13,088 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-19 22:17:13,094 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 22:17:13,095 INFO L82 PathProgramCache]: Analyzing trace with hash -845308063, now seen corresponding path program 1 times [2020-10-19 22:17:13,102 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 22:17:13,103 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [288237495] [2020-10-19 22:17:13,103 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 22:17:13,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 22:17:13,251 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 22:17:13,252 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [288237495] [2020-10-19 22:17:13,253 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 22:17:13,253 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-19 22:17:13,254 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [885017859] [2020-10-19 22:17:13,258 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-10-19 22:17:13,259 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 22:17:13,271 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-10-19 22:17:13,272 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-10-19 22:17:13,274 INFO L87 Difference]: Start difference. First operand 24 states. Second operand 2 states. [2020-10-19 22:17:13,290 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 22:17:13,291 INFO L93 Difference]: Finished difference Result 43 states and 61 transitions. [2020-10-19 22:17:13,291 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-10-19 22:17:13,292 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 13 [2020-10-19 22:17:13,293 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 22:17:13,301 INFO L225 Difference]: With dead ends: 43 [2020-10-19 22:17:13,302 INFO L226 Difference]: Without dead ends: 19 [2020-10-19 22:17:13,305 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-10-19 22:17:13,322 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2020-10-19 22:17:13,349 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2020-10-19 22:17:13,351 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2020-10-19 22:17:13,352 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 23 transitions. [2020-10-19 22:17:13,354 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 23 transitions. Word has length 13 [2020-10-19 22:17:13,354 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 22:17:13,354 INFO L481 AbstractCegarLoop]: Abstraction has 19 states and 23 transitions. [2020-10-19 22:17:13,355 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-10-19 22:17:13,355 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 23 transitions. [2020-10-19 22:17:13,355 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-19 22:17:13,356 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 22:17:13,356 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 22:17:13,356 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-19 22:17:13,357 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-19 22:17:13,357 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 22:17:13,357 INFO L82 PathProgramCache]: Analyzing trace with hash -1238662774, now seen corresponding path program 1 times [2020-10-19 22:17:13,357 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 22:17:13,358 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1105383531] [2020-10-19 22:17:13,358 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 22:17:13,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 22:17:13,443 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 22:17:13,443 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1105383531] [2020-10-19 22:17:13,444 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 22:17:13,444 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-19 22:17:13,444 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1875252749] [2020-10-19 22:17:13,446 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-19 22:17:13,446 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 22:17:13,446 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-19 22:17:13,447 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-10-19 22:17:13,447 INFO L87 Difference]: Start difference. First operand 19 states and 23 transitions. Second operand 4 states. [2020-10-19 22:17:13,541 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 22:17:13,542 INFO L93 Difference]: Finished difference Result 39 states and 51 transitions. [2020-10-19 22:17:13,542 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-19 22:17:13,542 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 13 [2020-10-19 22:17:13,543 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 22:17:13,543 INFO L225 Difference]: With dead ends: 39 [2020-10-19 22:17:13,543 INFO L226 Difference]: Without dead ends: 27 [2020-10-19 22:17:13,545 INFO L677 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 [2020-10-19 22:17:13,545 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2020-10-19 22:17:13,550 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 22. [2020-10-19 22:17:13,550 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2020-10-19 22:17:13,551 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 26 transitions. [2020-10-19 22:17:13,551 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 26 transitions. Word has length 13 [2020-10-19 22:17:13,551 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 22:17:13,551 INFO L481 AbstractCegarLoop]: Abstraction has 22 states and 26 transitions. [2020-10-19 22:17:13,552 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-19 22:17:13,552 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 26 transitions. [2020-10-19 22:17:13,552 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-10-19 22:17:13,552 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 22:17:13,553 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, 1] [2020-10-19 22:17:13,553 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-19 22:17:13,553 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-19 22:17:13,553 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 22:17:13,554 INFO L82 PathProgramCache]: Analyzing trace with hash 1944018757, now seen corresponding path program 1 times [2020-10-19 22:17:13,554 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 22:17:13,554 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2134088680] [2020-10-19 22:17:13,554 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 22:17:13,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-19 22:17:13,618 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-19 22:17:13,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-19 22:17:13,697 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-19 22:17:13,744 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-19 22:17:13,745 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-19 22:17:13,745 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-19 22:17:13,791 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.10 10:17:13 BoogieIcfgContainer [2020-10-19 22:17:13,792 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-19 22:17:13,792 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-10-19 22:17:13,792 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-10-19 22:17:13,792 INFO L275 PluginConnector]: Witness Printer initialized [2020-10-19 22:17:13,793 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.10 10:17:12" (3/4) ... [2020-10-19 22:17:13,796 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2020-10-19 22:17:13,861 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2020-10-19 22:17:13,861 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-10-19 22:17:13,864 INFO L168 Benchmark]: Toolchain (without parser) took 1760.52 ms. Allocated memory was 35.7 MB in the beginning and 47.7 MB in the end (delta: 12.1 MB). Free memory was 15.4 MB in the beginning and 20.1 MB in the end (delta: -4.7 MB). Peak memory consumption was 7.4 MB. Max. memory is 14.3 GB. [2020-10-19 22:17:13,865 INFO L168 Benchmark]: CDTParser took 0.35 ms. Allocated memory is still 33.6 MB. Free memory was 9.9 MB in the beginning and 9.9 MB in the end (delta: 44.0 kB). Peak memory consumption was 44.0 kB. Max. memory is 14.3 GB. [2020-10-19 22:17:13,869 INFO L168 Benchmark]: CACSL2BoogieTranslator took 358.73 ms. Allocated memory was 35.7 MB in the beginning and 44.6 MB in the end (delta: 8.9 MB). Free memory was 14.6 MB in the beginning and 25.0 MB in the end (delta: -10.3 MB). Peak memory consumption was 10.3 MB. Max. memory is 14.3 GB. [2020-10-19 22:17:13,870 INFO L168 Benchmark]: Boogie Procedure Inliner took 43.31 ms. Allocated memory is still 44.6 MB. Free memory was 25.0 MB in the beginning and 23.0 MB in the end (delta: 1.9 MB). Peak memory consumption was 1.9 MB. Max. memory is 14.3 GB. [2020-10-19 22:17:13,871 INFO L168 Benchmark]: Boogie Preprocessor took 39.23 ms. Allocated memory is still 44.6 MB. Free memory was 23.0 MB in the beginning and 21.4 MB in the end (delta: 1.6 MB). Peak memory consumption was 1.6 MB. Max. memory is 14.3 GB. [2020-10-19 22:17:13,872 INFO L168 Benchmark]: RCFGBuilder took 444.95 ms. Allocated memory was 44.6 MB in the beginning and 46.1 MB in the end (delta: 1.6 MB). Free memory was 21.4 MB in the beginning and 15.8 MB in the end (delta: 5.6 MB). Peak memory consumption was 8.9 MB. Max. memory is 14.3 GB. [2020-10-19 22:17:13,873 INFO L168 Benchmark]: TraceAbstraction took 794.12 ms. Allocated memory was 46.1 MB in the beginning and 47.7 MB in the end (delta: 1.6 MB). Free memory was 15.4 MB in the beginning and 23.2 MB in the end (delta: -7.8 MB). There was no memory consumed. Max. memory is 14.3 GB. [2020-10-19 22:17:13,876 INFO L168 Benchmark]: Witness Printer took 69.21 ms. Allocated memory is still 47.7 MB. Free memory was 23.2 MB in the beginning and 20.1 MB in the end (delta: 3.1 MB). Peak memory consumption was 3.1 MB. Max. memory is 14.3 GB. [2020-10-19 22:17:13,885 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.35 ms. Allocated memory is still 33.6 MB. Free memory was 9.9 MB in the beginning and 9.9 MB in the end (delta: 44.0 kB). Peak memory consumption was 44.0 kB. Max. memory is 14.3 GB. * CACSL2BoogieTranslator took 358.73 ms. Allocated memory was 35.7 MB in the beginning and 44.6 MB in the end (delta: 8.9 MB). Free memory was 14.6 MB in the beginning and 25.0 MB in the end (delta: -10.3 MB). Peak memory consumption was 10.3 MB. Max. memory is 14.3 GB. * Boogie Procedure Inliner took 43.31 ms. Allocated memory is still 44.6 MB. Free memory was 25.0 MB in the beginning and 23.0 MB in the end (delta: 1.9 MB). Peak memory consumption was 1.9 MB. Max. memory is 14.3 GB. * Boogie Preprocessor took 39.23 ms. Allocated memory is still 44.6 MB. Free memory was 23.0 MB in the beginning and 21.4 MB in the end (delta: 1.6 MB). Peak memory consumption was 1.6 MB. Max. memory is 14.3 GB. * RCFGBuilder took 444.95 ms. Allocated memory was 44.6 MB in the beginning and 46.1 MB in the end (delta: 1.6 MB). Free memory was 21.4 MB in the beginning and 15.8 MB in the end (delta: 5.6 MB). Peak memory consumption was 8.9 MB. Max. memory is 14.3 GB. * TraceAbstraction took 794.12 ms. Allocated memory was 46.1 MB in the beginning and 47.7 MB in the end (delta: 1.6 MB). Free memory was 15.4 MB in the beginning and 23.2 MB in the end (delta: -7.8 MB). There was no memory consumed. Max. memory is 14.3 GB. * Witness Printer took 69.21 ms. Allocated memory is still 47.7 MB. Free memory was 23.2 MB in the beginning and 20.1 MB in the end (delta: 3.1 MB). Peak memory consumption was 3.1 MB. Max. memory is 14.3 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 10]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L19] int N; VAL [N=0] [L23] N = __VERIFIER_nondet_int() [L24] COND FALSE !(N <= 0) [L13] COND FALSE !(!cond) VAL [N=1] [L27] int i; [L28] long long sum[1]; [L29] int *a = malloc(sizeof(int)*N); [L31] sum[0] = 1 [L32] i=0 VAL [N=1] [L32] COND TRUE i