./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/array-fpi/ncompf.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/ncompf.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 c18491048038839cd2bebabad98c6df95c5a2283 ......................................................................................................................................................................................................................................................................................................... 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 22:15:00,944 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-19 22:15:00,946 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-19 22:15:00,990 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-19 22:15:00,990 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-19 22:15:01,000 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-19 22:15:01,003 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-19 22:15:01,007 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-19 22:15:01,010 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-19 22:15:01,013 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-19 22:15:01,015 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-19 22:15:01,016 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-19 22:15:01,016 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-19 22:15:01,020 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-19 22:15:01,021 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-19 22:15:01,023 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-19 22:15:01,025 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-19 22:15:01,026 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-19 22:15:01,028 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-19 22:15:01,036 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-19 22:15:01,038 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-19 22:15:01,040 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-19 22:15:01,043 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-19 22:15:01,044 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-19 22:15:01,058 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-19 22:15:01,061 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-19 22:15:01,062 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-19 22:15:01,063 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-19 22:15:01,063 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-19 22:15:01,068 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-19 22:15:01,068 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-19 22:15:01,069 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-19 22:15:01,070 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-19 22:15:01,071 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-19 22:15:01,072 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-19 22:15:01,073 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-19 22:15:01,074 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-19 22:15:01,075 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-19 22:15:01,075 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-19 22:15:01,076 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-19 22:15:01,077 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-19 22:15:01,079 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-19 22:15:01,113 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-19 22:15:01,114 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-19 22:15:01,115 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-19 22:15:01,116 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-19 22:15:01,116 INFO L138 SettingsManager]: * Use SBE=true [2020-10-19 22:15:01,116 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-19 22:15:01,116 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-19 22:15:01,117 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-19 22:15:01,117 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-19 22:15:01,117 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-19 22:15:01,117 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-19 22:15:01,118 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-19 22:15:01,118 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-19 22:15:01,118 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-19 22:15:01,118 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-19 22:15:01,118 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-19 22:15:01,119 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-19 22:15:01,119 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-19 22:15:01,119 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-19 22:15:01,120 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-19 22:15:01,120 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-19 22:15:01,120 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-19 22:15:01,120 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-19 22:15:01,121 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-19 22:15:01,121 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-19 22:15:01,121 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-19 22:15:01,121 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-19 22:15:01,121 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-19 22:15:01,122 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-19 22:15:01,122 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 -> c18491048038839cd2bebabad98c6df95c5a2283 [2020-10-19 22:15:01,334 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-19 22:15:01,346 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-19 22:15:01,350 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-19 22:15:01,352 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-19 22:15:01,352 INFO L275 PluginConnector]: CDTParser initialized [2020-10-19 22:15:01,353 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/array-fpi/ncompf.c [2020-10-19 22:15:01,421 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/78bee509e/77f10a30432c43ae864df427130230c7/FLAGcb5de6b04 [2020-10-19 22:15:01,972 INFO L306 CDTParser]: Found 1 translation units. [2020-10-19 22:15:01,973 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-fpi/ncompf.c [2020-10-19 22:15:01,981 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/78bee509e/77f10a30432c43ae864df427130230c7/FLAGcb5de6b04 [2020-10-19 22:15:02,357 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/78bee509e/77f10a30432c43ae864df427130230c7 [2020-10-19 22:15:02,361 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-19 22:15:02,368 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-10-19 22:15:02,369 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-19 22:15:02,370 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-19 22:15:02,375 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-19 22:15:02,377 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.10 10:15:02" (1/1) ... [2020-10-19 22:15:02,381 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@26d0856d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 10:15:02, skipping insertion in model container [2020-10-19 22:15:02,381 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.10 10:15:02" (1/1) ... [2020-10-19 22:15:02,390 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-19 22:15:02,413 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-19 22:15:02,595 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-19 22:15:02,626 INFO L203 MainTranslator]: Completed pre-run [2020-10-19 22:15:02,652 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-19 22:15:02,670 INFO L208 MainTranslator]: Completed translation [2020-10-19 22:15:02,671 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 10:15:02 WrapperNode [2020-10-19 22:15:02,671 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-19 22:15:02,672 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-19 22:15:02,672 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-19 22:15:02,673 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-19 22:15:02,680 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 10:15:02" (1/1) ... [2020-10-19 22:15:02,690 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 10:15:02" (1/1) ... [2020-10-19 22:15:02,716 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-19 22:15:02,717 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-19 22:15:02,717 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-19 22:15:02,717 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-19 22:15:02,725 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 10:15:02" (1/1) ... [2020-10-19 22:15:02,725 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 10:15:02" (1/1) ... [2020-10-19 22:15:02,728 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 10:15:02" (1/1) ... [2020-10-19 22:15:02,728 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 10:15:02" (1/1) ... [2020-10-19 22:15:02,736 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 10:15:02" (1/1) ... [2020-10-19 22:15:02,742 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 10:15:02" (1/1) ... [2020-10-19 22:15:02,744 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 10:15:02" (1/1) ... [2020-10-19 22:15:02,747 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-19 22:15:02,747 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-19 22:15:02,748 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-19 22:15:02,748 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-19 22:15:02,749 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 10:15:02" (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 22:15:02,817 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-19 22:15:02,817 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-19 22:15:02,817 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-19 22:15:02,818 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-10-19 22:15:02,818 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-19 22:15:02,818 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-19 22:15:02,818 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-19 22:15:03,109 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-19 22:15:03,109 INFO L298 CfgBuilder]: Removed 14 assume(true) statements. [2020-10-19 22:15:03,111 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.10 10:15:03 BoogieIcfgContainer [2020-10-19 22:15:03,112 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-19 22:15:03,113 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-19 22:15:03,113 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-19 22:15:03,117 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-19 22:15:03,117 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.10 10:15:02" (1/3) ... [2020-10-19 22:15:03,118 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@53d4fee0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.10 10:15:03, skipping insertion in model container [2020-10-19 22:15:03,118 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 10:15:02" (2/3) ... [2020-10-19 22:15:03,119 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@53d4fee0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.10 10:15:03, skipping insertion in model container [2020-10-19 22:15:03,119 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.10 10:15:03" (3/3) ... [2020-10-19 22:15:03,121 INFO L111 eAbstractionObserver]: Analyzing ICFG ncompf.c [2020-10-19 22:15:03,134 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-19 22:15:03,143 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-19 22:15:03,159 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-19 22:15:03,198 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-19 22:15:03,199 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-19 22:15:03,199 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-19 22:15:03,199 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-19 22:15:03,201 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-19 22:15:03,202 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-19 22:15:03,202 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-19 22:15:03,202 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-19 22:15:03,222 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states. [2020-10-19 22:15:03,230 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-19 22:15:03,230 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 22:15:03,232 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 22:15:03,233 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-19 22:15:03,240 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 22:15:03,240 INFO L82 PathProgramCache]: Analyzing trace with hash -592971038, now seen corresponding path program 1 times [2020-10-19 22:15:03,251 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 22:15:03,252 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2082819869] [2020-10-19 22:15:03,252 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 22:15:03,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 22:15:03,422 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 22:15:03,423 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2082819869] [2020-10-19 22:15:03,424 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 22:15:03,425 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-19 22:15:03,426 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1604029975] [2020-10-19 22:15:03,431 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-10-19 22:15:03,432 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 22:15:03,448 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-10-19 22:15:03,449 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-10-19 22:15:03,452 INFO L87 Difference]: Start difference. First operand 25 states. Second operand 2 states. [2020-10-19 22:15:03,475 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 22:15:03,476 INFO L93 Difference]: Finished difference Result 45 states and 63 transitions. [2020-10-19 22:15:03,476 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-10-19 22:15:03,478 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 14 [2020-10-19 22:15:03,479 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 22:15:03,490 INFO L225 Difference]: With dead ends: 45 [2020-10-19 22:15:03,490 INFO L226 Difference]: Without dead ends: 20 [2020-10-19 22:15:03,494 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 22:15:03,516 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2020-10-19 22:15:03,533 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 20. [2020-10-19 22:15:03,535 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2020-10-19 22:15:03,537 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 23 transitions. [2020-10-19 22:15:03,538 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 23 transitions. Word has length 14 [2020-10-19 22:15:03,539 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 22:15:03,539 INFO L481 AbstractCegarLoop]: Abstraction has 20 states and 23 transitions. [2020-10-19 22:15:03,539 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-10-19 22:15:03,540 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 23 transitions. [2020-10-19 22:15:03,540 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-19 22:15:03,541 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 22:15:03,541 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 22:15:03,542 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-19 22:15:03,542 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-19 22:15:03,542 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 22:15:03,542 INFO L82 PathProgramCache]: Analyzing trace with hash 108093540, now seen corresponding path program 1 times [2020-10-19 22:15:03,543 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 22:15:03,543 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1901748170] [2020-10-19 22:15:03,544 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 22:15:03,575 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-10-19 22:15:03,575 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [148831905] [2020-10-19 22:15:03,576 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-19 22:15:03,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-19 22:15:03,679 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-19 22:15:03,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-19 22:15:03,701 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-19 22:15:03,735 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-19 22:15:03,736 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-19 22:15:03,951 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2020-10-19 22:15:03,994 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.10 10:15:03 BoogieIcfgContainer [2020-10-19 22:15:03,995 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-19 22:15:03,995 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-10-19 22:15:03,995 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-10-19 22:15:03,995 INFO L275 PluginConnector]: Witness Printer initialized [2020-10-19 22:15:03,996 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.10 10:15:03" (3/4) ... [2020-10-19 22:15:03,998 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2020-10-19 22:15:04,059 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2020-10-19 22:15:04,059 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-10-19 22:15:04,062 INFO L168 Benchmark]: Toolchain (without parser) took 1698.19 ms. Allocated memory was 41.9 MB in the beginning and 47.2 MB in the end (delta: 5.2 MB). Free memory was 22.4 MB in the beginning and 17.4 MB in the end (delta: 5.1 MB). Peak memory consumption was 10.3 MB. Max. memory is 14.3 GB. [2020-10-19 22:15:04,063 INFO L168 Benchmark]: CDTParser took 0.40 ms. Allocated memory is still 32.0 MB. Free memory was 10.7 MB in the beginning and 10.7 MB in the end (delta: 47.5 kB). Peak memory consumption was 47.5 kB. Max. memory is 14.3 GB. [2020-10-19 22:15:04,064 INFO L168 Benchmark]: CACSL2BoogieTranslator took 302.41 ms. Allocated memory was 41.9 MB in the beginning and 42.5 MB in the end (delta: 524.3 kB). Free memory was 21.5 MB in the beginning and 22.7 MB in the end (delta: -1.2 MB). Peak memory consumption was 12.5 MB. Max. memory is 14.3 GB. [2020-10-19 22:15:04,065 INFO L168 Benchmark]: Boogie Procedure Inliner took 44.63 ms. Allocated memory is still 42.5 MB. Free memory was 22.7 MB in the beginning and 20.8 MB in the end (delta: 1.9 MB). Peak memory consumption was 1.9 MB. Max. memory is 14.3 GB. [2020-10-19 22:15:04,066 INFO L168 Benchmark]: Boogie Preprocessor took 29.87 ms. Allocated memory is still 42.5 MB. Free memory was 20.8 MB in the beginning and 19.2 MB in the end (delta: 1.6 MB). Peak memory consumption was 1.6 MB. Max. memory is 14.3 GB. [2020-10-19 22:15:04,067 INFO L168 Benchmark]: RCFGBuilder took 364.53 ms. Allocated memory was 42.5 MB in the beginning and 45.1 MB in the end (delta: 2.6 MB). Free memory was 19.2 MB in the beginning and 20.2 MB in the end (delta: -957.3 kB). Peak memory consumption was 10.1 MB. Max. memory is 14.3 GB. [2020-10-19 22:15:04,068 INFO L168 Benchmark]: TraceAbstraction took 881.76 ms. Allocated memory was 45.1 MB in the beginning and 47.2 MB in the end (delta: 2.1 MB). Free memory was 19.7 MB in the beginning and 20.1 MB in the end (delta: -457.6 kB). Peak memory consumption was 1.6 MB. Max. memory is 14.3 GB. [2020-10-19 22:15:04,069 INFO L168 Benchmark]: Witness Printer took 64.13 ms. Allocated memory is still 47.2 MB. Free memory was 20.1 MB in the beginning and 17.4 MB in the end (delta: 2.8 MB). Peak memory consumption was 2.8 MB. Max. memory is 14.3 GB. [2020-10-19 22:15:04,074 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.40 ms. Allocated memory is still 32.0 MB. Free memory was 10.7 MB in the beginning and 10.7 MB in the end (delta: 47.5 kB). Peak memory consumption was 47.5 kB. Max. memory is 14.3 GB. * CACSL2BoogieTranslator took 302.41 ms. Allocated memory was 41.9 MB in the beginning and 42.5 MB in the end (delta: 524.3 kB). Free memory was 21.5 MB in the beginning and 22.7 MB in the end (delta: -1.2 MB). Peak memory consumption was 12.5 MB. Max. memory is 14.3 GB. * Boogie Procedure Inliner took 44.63 ms. Allocated memory is still 42.5 MB. Free memory was 22.7 MB in the beginning and 20.8 MB in the end (delta: 1.9 MB). Peak memory consumption was 1.9 MB. Max. memory is 14.3 GB. * Boogie Preprocessor took 29.87 ms. Allocated memory is still 42.5 MB. Free memory was 20.8 MB in the beginning and 19.2 MB in the end (delta: 1.6 MB). Peak memory consumption was 1.6 MB. Max. memory is 14.3 GB. * RCFGBuilder took 364.53 ms. Allocated memory was 42.5 MB in the beginning and 45.1 MB in the end (delta: 2.6 MB). Free memory was 19.2 MB in the beginning and 20.2 MB in the end (delta: -957.3 kB). Peak memory consumption was 10.1 MB. Max. memory is 14.3 GB. * TraceAbstraction took 881.76 ms. Allocated memory was 45.1 MB in the beginning and 47.2 MB in the end (delta: 2.1 MB). Free memory was 19.7 MB in the beginning and 20.1 MB in the end (delta: -457.6 kB). Peak memory consumption was 1.6 MB. Max. memory is 14.3 GB. * Witness Printer took 64.13 ms. Allocated memory is still 47.2 MB. Free memory was 20.1 MB in the beginning and 17.4 MB in the end (delta: 2.8 MB). Peak memory consumption was 2.8 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 *a = malloc(sizeof(long long)*N); [L29] long long *b = malloc(sizeof(long long)*N); [L30] long long *c = malloc(sizeof(long long)*N); [L32] a[0] = 6 [L33] b[0] = 1 [L34] c[0] = 0 [L35] i=1 VAL [N=1] [L35] COND FALSE !(i