./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/array-fpi/condaf.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 678e0110 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx12G -Xms1G -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/condaf.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 d0fe87725d099c7309e1044eb65f43c72d424092 ............................................................................................................................................................................................................................................................................................................................................................................................................................................ 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 0.1.24-678e011 [2019-11-19 20:49:56,684 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-19 20:49:56,686 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-19 20:49:56,697 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-19 20:49:56,698 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-19 20:49:56,699 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-19 20:49:56,700 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-19 20:49:56,702 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-19 20:49:56,704 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-19 20:49:56,705 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-19 20:49:56,706 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-19 20:49:56,707 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-19 20:49:56,708 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-19 20:49:56,709 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-19 20:49:56,710 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-19 20:49:56,711 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-19 20:49:56,712 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-19 20:49:56,713 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-19 20:49:56,715 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-19 20:49:56,717 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-19 20:49:56,719 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-19 20:49:56,720 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-19 20:49:56,721 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-19 20:49:56,722 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-19 20:49:56,725 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-19 20:49:56,725 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-19 20:49:56,726 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-19 20:49:56,727 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-19 20:49:56,727 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-19 20:49:56,728 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-19 20:49:56,729 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-19 20:49:56,730 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-19 20:49:56,731 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-19 20:49:56,731 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-19 20:49:56,733 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-19 20:49:56,733 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-19 20:49:56,734 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-19 20:49:56,734 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-19 20:49:56,735 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-19 20:49:56,736 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-19 20:49:56,736 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-19 20:49:56,737 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2019-11-19 20:49:56,752 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-19 20:49:56,752 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-19 20:49:56,754 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-19 20:49:56,754 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-19 20:49:56,754 INFO L138 SettingsManager]: * Use SBE=true [2019-11-19 20:49:56,755 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-19 20:49:56,755 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-19 20:49:56,755 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-19 20:49:56,755 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-19 20:49:56,756 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-19 20:49:56,756 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-19 20:49:56,756 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-19 20:49:56,756 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-19 20:49:56,757 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-19 20:49:56,757 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-19 20:49:56,757 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-19 20:49:56,758 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-19 20:49:56,758 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-19 20:49:56,758 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-19 20:49:56,758 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-19 20:49:56,759 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-19 20:49:56,759 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-19 20:49:56,759 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-19 20:49:56,760 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-19 20:49:56,760 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-19 20:49:56,760 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-19 20:49:56,760 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-19 20:49:56,761 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-19 20:49:56,761 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 -> d0fe87725d099c7309e1044eb65f43c72d424092 [2019-11-19 20:49:57,076 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-19 20:49:57,090 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-19 20:49:57,093 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-19 20:49:57,098 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-19 20:49:57,098 INFO L275 PluginConnector]: CDTParser initialized [2019-11-19 20:49:57,099 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/array-fpi/condaf.c [2019-11-19 20:49:57,154 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/feb38259a/e56d8fb6079d4560a5057eb9f87af4b8/FLAG00a68e729 [2019-11-19 20:49:57,532 INFO L306 CDTParser]: Found 1 translation units. [2019-11-19 20:49:57,533 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-fpi/condaf.c [2019-11-19 20:49:57,538 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/feb38259a/e56d8fb6079d4560a5057eb9f87af4b8/FLAG00a68e729 [2019-11-19 20:49:57,966 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/feb38259a/e56d8fb6079d4560a5057eb9f87af4b8 [2019-11-19 20:49:57,969 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-19 20:49:57,971 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-11-19 20:49:57,972 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-19 20:49:57,972 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-19 20:49:57,975 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-19 20:49:57,977 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 08:49:57" (1/1) ... [2019-11-19 20:49:57,980 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1ba5d1ac and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:49:57, skipping insertion in model container [2019-11-19 20:49:57,981 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 08:49:57" (1/1) ... [2019-11-19 20:49:57,987 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-11-19 20:49:58,004 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-11-19 20:49:58,167 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-19 20:49:58,174 INFO L188 MainTranslator]: Completed pre-run [2019-11-19 20:49:58,193 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-19 20:49:58,207 INFO L192 MainTranslator]: Completed translation [2019-11-19 20:49:58,207 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:49:58 WrapperNode [2019-11-19 20:49:58,207 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-19 20:49:58,208 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-19 20:49:58,208 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-19 20:49:58,209 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-19 20:49:58,217 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:49:58" (1/1) ... [2019-11-19 20:49:58,281 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:49:58" (1/1) ... [2019-11-19 20:49:58,304 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-19 20:49:58,305 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-19 20:49:58,305 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-19 20:49:58,305 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-19 20:49:58,314 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:49:58" (1/1) ... [2019-11-19 20:49:58,315 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:49:58" (1/1) ... [2019-11-19 20:49:58,317 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:49:58" (1/1) ... [2019-11-19 20:49:58,318 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:49:58" (1/1) ... [2019-11-19 20:49:58,327 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:49:58" (1/1) ... [2019-11-19 20:49:58,343 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:49:58" (1/1) ... [2019-11-19 20:49:58,344 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:49:58" (1/1) ... [2019-11-19 20:49:58,349 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-19 20:49:58,351 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-19 20:49:58,351 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-19 20:49:58,351 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-19 20:49:58,352 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:49:58" (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 [2019-11-19 20:49:58,426 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-11-19 20:49:58,427 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-11-19 20:49:58,427 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-11-19 20:49:58,427 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-19 20:49:58,428 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-19 20:49:58,429 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-11-19 20:49:58,430 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-11-19 20:49:58,811 INFO L280 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-19 20:49:58,812 INFO L285 CfgBuilder]: Removed 9 assume(true) statements. [2019-11-19 20:49:58,813 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 08:49:58 BoogieIcfgContainer [2019-11-19 20:49:58,813 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-19 20:49:58,814 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-19 20:49:58,814 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-19 20:49:58,817 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-19 20:49:58,818 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 08:49:57" (1/3) ... [2019-11-19 20:49:58,819 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@19bdca66 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 08:49:58, skipping insertion in model container [2019-11-19 20:49:58,819 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:49:58" (2/3) ... [2019-11-19 20:49:58,819 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@19bdca66 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 08:49:58, skipping insertion in model container [2019-11-19 20:49:58,820 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 08:49:58" (3/3) ... [2019-11-19 20:49:58,822 INFO L109 eAbstractionObserver]: Analyzing ICFG condaf.c [2019-11-19 20:49:58,833 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-19 20:49:58,840 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-19 20:49:58,854 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-19 20:49:58,881 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-19 20:49:58,881 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-19 20:49:58,882 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-19 20:49:58,882 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-19 20:49:58,882 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-19 20:49:58,882 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-19 20:49:58,882 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-19 20:49:58,883 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-19 20:49:58,898 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states. [2019-11-19 20:49:58,904 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2019-11-19 20:49:58,905 INFO L402 BasicCegarLoop]: Found error trace [2019-11-19 20:49:58,906 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-19 20:49:58,906 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-19 20:49:58,912 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-19 20:49:58,912 INFO L82 PathProgramCache]: Analyzing trace with hash 1306593900, now seen corresponding path program 1 times [2019-11-19 20:49:58,921 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-19 20:49:58,922 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1911134694] [2019-11-19 20:49:58,922 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-19 20:49:59,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 20:49:59,057 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-19 20:49:59,058 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1911134694] [2019-11-19 20:49:59,059 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-19 20:49:59,059 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-11-19 20:49:59,060 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [25100193] [2019-11-19 20:49:59,065 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-11-19 20:49:59,066 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-19 20:49:59,078 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-11-19 20:49:59,078 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-11-19 20:49:59,080 INFO L87 Difference]: Start difference. First operand 20 states. Second operand 2 states. [2019-11-19 20:49:59,096 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-19 20:49:59,097 INFO L93 Difference]: Finished difference Result 35 states and 48 transitions. [2019-11-19 20:49:59,097 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-11-19 20:49:59,098 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 11 [2019-11-19 20:49:59,099 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-19 20:49:59,109 INFO L225 Difference]: With dead ends: 35 [2019-11-19 20:49:59,109 INFO L226 Difference]: Without dead ends: 16 [2019-11-19 20:49:59,112 INFO L630 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 [2019-11-19 20:49:59,131 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2019-11-19 20:49:59,145 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2019-11-19 20:49:59,146 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2019-11-19 20:49:59,147 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 19 transitions. [2019-11-19 20:49:59,149 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 19 transitions. Word has length 11 [2019-11-19 20:49:59,149 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-19 20:49:59,149 INFO L462 AbstractCegarLoop]: Abstraction has 16 states and 19 transitions. [2019-11-19 20:49:59,149 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-11-19 20:49:59,150 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 19 transitions. [2019-11-19 20:49:59,150 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2019-11-19 20:49:59,151 INFO L402 BasicCegarLoop]: Found error trace [2019-11-19 20:49:59,151 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-19 20:49:59,151 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-19 20:49:59,152 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-19 20:49:59,152 INFO L82 PathProgramCache]: Analyzing trace with hash -875432925, now seen corresponding path program 1 times [2019-11-19 20:49:59,152 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-19 20:49:59,152 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [631068343] [2019-11-19 20:49:59,153 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-19 20:49:59,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 20:49:59,257 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-19 20:49:59,257 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [631068343] [2019-11-19 20:49:59,258 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-19 20:49:59,258 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-19 20:49:59,258 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1259582434] [2019-11-19 20:49:59,262 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-19 20:49:59,264 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-19 20:49:59,265 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-19 20:49:59,265 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-19 20:49:59,266 INFO L87 Difference]: Start difference. First operand 16 states and 19 transitions. Second operand 3 states. [2019-11-19 20:49:59,344 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-19 20:49:59,344 INFO L93 Difference]: Finished difference Result 29 states and 35 transitions. [2019-11-19 20:49:59,346 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-19 20:49:59,347 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 11 [2019-11-19 20:49:59,347 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-19 20:49:59,349 INFO L225 Difference]: With dead ends: 29 [2019-11-19 20:49:59,349 INFO L226 Difference]: Without dead ends: 18 [2019-11-19 20:49:59,350 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-19 20:49:59,351 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2019-11-19 20:49:59,357 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 17. [2019-11-19 20:49:59,358 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2019-11-19 20:49:59,359 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 20 transitions. [2019-11-19 20:49:59,360 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 20 transitions. Word has length 11 [2019-11-19 20:49:59,360 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-19 20:49:59,360 INFO L462 AbstractCegarLoop]: Abstraction has 17 states and 20 transitions. [2019-11-19 20:49:59,361 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-19 20:49:59,361 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 20 transitions. [2019-11-19 20:49:59,361 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2019-11-19 20:49:59,362 INFO L402 BasicCegarLoop]: Found error trace [2019-11-19 20:49:59,362 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-19 20:49:59,362 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-19 20:49:59,363 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-19 20:49:59,363 INFO L82 PathProgramCache]: Analyzing trace with hash -100050171, now seen corresponding path program 1 times [2019-11-19 20:49:59,363 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-19 20:49:59,364 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [556505259] [2019-11-19 20:49:59,365 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-19 20:49:59,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 20:49:59,473 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-11-19 20:49:59,473 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [556505259] [2019-11-19 20:49:59,474 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-19 20:49:59,474 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-11-19 20:49:59,474 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1184834721] [2019-11-19 20:49:59,475 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-19 20:49:59,475 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-19 20:49:59,475 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-19 20:49:59,476 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-11-19 20:49:59,476 INFO L87 Difference]: Start difference. First operand 17 states and 20 transitions. Second operand 4 states. [2019-11-19 20:49:59,544 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-19 20:49:59,544 INFO L93 Difference]: Finished difference Result 30 states and 36 transitions. [2019-11-19 20:49:59,545 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-19 20:49:59,545 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 13 [2019-11-19 20:49:59,546 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-19 20:49:59,546 INFO L225 Difference]: With dead ends: 30 [2019-11-19 20:49:59,546 INFO L226 Difference]: Without dead ends: 23 [2019-11-19 20:49:59,547 INFO L630 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 [2019-11-19 20:49:59,548 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2019-11-19 20:49:59,551 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 19. [2019-11-19 20:49:59,552 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2019-11-19 20:49:59,553 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 22 transitions. [2019-11-19 20:49:59,553 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 22 transitions. Word has length 13 [2019-11-19 20:49:59,553 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-19 20:49:59,554 INFO L462 AbstractCegarLoop]: Abstraction has 19 states and 22 transitions. [2019-11-19 20:49:59,554 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-19 20:49:59,554 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 22 transitions. [2019-11-19 20:49:59,555 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2019-11-19 20:49:59,555 INFO L402 BasicCegarLoop]: Found error trace [2019-11-19 20:49:59,555 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-19 20:49:59,555 INFO L410 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-19 20:49:59,556 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-19 20:49:59,556 INFO L82 PathProgramCache]: Analyzing trace with hash 1777901324, now seen corresponding path program 1 times [2019-11-19 20:49:59,556 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-19 20:49:59,557 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [778744346] [2019-11-19 20:49:59,557 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-19 20:49:59,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 20:49:59,858 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-11-19 20:49:59,859 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [778744346] [2019-11-19 20:49:59,859 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [165948870] [2019-11-19 20:49:59,860 INFO L94 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 [2019-11-19 20:49:59,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 20:49:59,952 INFO L255 TraceCheckSpWp]: Trace formula consists of 69 conjuncts, 9 conjunts are in the unsatisfiable core [2019-11-19 20:49:59,960 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-19 20:50:00,037 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2019-11-19 20:50:00,037 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-19 20:50:00,041 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-19 20:50:00,042 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-11-19 20:50:00,042 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:11, output treesize:7 [2019-11-19 20:50:00,093 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2019-11-19 20:50:00,094 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-19 20:50:00,096 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-19 20:50:00,097 INFO L496 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-11-19 20:50:00,097 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:15, output treesize:3 [2019-11-19 20:50:00,111 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-11-19 20:50:00,111 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-19 20:50:00,111 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 10 [2019-11-19 20:50:00,112 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [480049244] [2019-11-19 20:50:00,113 INFO L442 AbstractCegarLoop]: Interpolant automaton has 10 states [2019-11-19 20:50:00,113 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-19 20:50:00,113 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2019-11-19 20:50:00,114 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2019-11-19 20:50:00,114 INFO L87 Difference]: Start difference. First operand 19 states and 22 transitions. Second operand 10 states. [2019-11-19 20:50:00,311 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-19 20:50:00,311 INFO L93 Difference]: Finished difference Result 34 states and 40 transitions. [2019-11-19 20:50:00,312 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-11-19 20:50:00,312 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 18 [2019-11-19 20:50:00,312 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-19 20:50:00,313 INFO L225 Difference]: With dead ends: 34 [2019-11-19 20:50:00,313 INFO L226 Difference]: Without dead ends: 23 [2019-11-19 20:50:00,314 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 15 SyntacticMatches, 3 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=50, Invalid=106, Unknown=0, NotChecked=0, Total=156 [2019-11-19 20:50:00,315 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2019-11-19 20:50:00,319 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 20. [2019-11-19 20:50:00,319 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2019-11-19 20:50:00,320 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 23 transitions. [2019-11-19 20:50:00,320 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 23 transitions. Word has length 18 [2019-11-19 20:50:00,321 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-19 20:50:00,321 INFO L462 AbstractCegarLoop]: Abstraction has 20 states and 23 transitions. [2019-11-19 20:50:00,321 INFO L463 AbstractCegarLoop]: Interpolant automaton has 10 states. [2019-11-19 20:50:00,321 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 23 transitions. [2019-11-19 20:50:00,322 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2019-11-19 20:50:00,322 INFO L402 BasicCegarLoop]: Found error trace [2019-11-19 20:50:00,322 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-19 20:50:00,527 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-19 20:50:00,528 INFO L410 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-19 20:50:00,528 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-19 20:50:00,529 INFO L82 PathProgramCache]: Analyzing trace with hash 1384874314, now seen corresponding path program 1 times [2019-11-19 20:50:00,529 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-19 20:50:00,530 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1974386088] [2019-11-19 20:50:00,530 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-19 20:50:00,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-19 20:50:00,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-19 20:50:00,629 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-19 20:50:00,630 INFO L475 BasicCegarLoop]: Counterexample might be feasible [2019-11-19 20:50:00,669 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.11 08:50:00 BoogieIcfgContainer [2019-11-19 20:50:00,669 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-11-19 20:50:00,670 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-19 20:50:00,670 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-19 20:50:00,670 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-19 20:50:00,671 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 08:49:58" (3/4) ... [2019-11-19 20:50:00,674 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2019-11-19 20:50:00,750 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2019-11-19 20:50:00,750 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-19 20:50:00,752 INFO L168 Benchmark]: Toolchain (without parser) took 2781.58 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 139.5 MB). Free memory was 956.3 MB in the beginning and 993.0 MB in the end (delta: -36.6 MB). Peak memory consumption was 102.8 MB. Max. memory is 11.5 GB. [2019-11-19 20:50:00,753 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 1.0 GB. Free memory is still 981.8 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-19 20:50:00,754 INFO L168 Benchmark]: CACSL2BoogieTranslator took 236.04 ms. Allocated memory is still 1.0 GB. Free memory was 956.3 MB in the beginning and 945.6 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2019-11-19 20:50:00,755 INFO L168 Benchmark]: Boogie Procedure Inliner took 96.29 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 139.5 MB). Free memory was 945.6 MB in the beginning and 1.1 GB in the end (delta: -183.9 MB). Peak memory consumption was 9.8 MB. Max. memory is 11.5 GB. [2019-11-19 20:50:00,755 INFO L168 Benchmark]: Boogie Preprocessor took 45.85 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. [2019-11-19 20:50:00,756 INFO L168 Benchmark]: RCFGBuilder took 462.23 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: 19.2 MB). Peak memory consumption was 19.2 MB. Max. memory is 11.5 GB. [2019-11-19 20:50:00,757 INFO L168 Benchmark]: TraceAbstraction took 1854.98 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 993.0 MB in the end (delta: 117.3 MB). Peak memory consumption was 117.3 MB. Max. memory is 11.5 GB. [2019-11-19 20:50:00,757 INFO L168 Benchmark]: Witness Printer took 80.79 ms. Allocated memory is still 1.2 GB. Free memory is still 993.0 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-19 20:50:00,761 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 1.0 GB. Free memory is still 981.8 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 236.04 ms. Allocated memory is still 1.0 GB. Free memory was 956.3 MB in the beginning and 945.6 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 96.29 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 139.5 MB). Free memory was 945.6 MB in the beginning and 1.1 GB in the end (delta: -183.9 MB). Peak memory consumption was 9.8 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 45.85 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 462.23 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: 19.2 MB). Peak memory consumption was 19.2 MB. Max. memory is 11.5 GB. * TraceAbstraction took 1854.98 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 993.0 MB in the end (delta: 117.3 MB). Peak memory consumption was 117.3 MB. Max. memory is 11.5 GB. * Witness Printer took 80.79 ms. Allocated memory is still 1.2 GB. Free memory is still 993.0 MB. There was no memory consumed. Max. memory is 11.5 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: [L14] int N; VAL [N=0] [L18] N = __VERIFIER_nondet_int() [L19] COND FALSE !(N <= 0) [L22] int i; [L23] int sum[1]; [L24] int *a = malloc(sizeof(int)*N); [L26] sum[0] = 0 [L27] i=0 VAL [N=1] [L27] COND TRUE i