./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 f6fb2bb1 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-f6fb2bb [2019-11-19 18:24:55,116 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-19 18:24:55,118 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-19 18:24:55,136 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-19 18:24:55,136 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-19 18:24:55,139 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-19 18:24:55,141 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-19 18:24:55,148 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-19 18:24:55,154 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-19 18:24:55,156 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-19 18:24:55,158 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-19 18:24:55,159 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-19 18:24:55,160 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-19 18:24:55,161 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-19 18:24:55,163 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-19 18:24:55,164 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-19 18:24:55,165 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-19 18:24:55,166 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-19 18:24:55,168 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-19 18:24:55,170 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-19 18:24:55,171 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-19 18:24:55,172 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-19 18:24:55,174 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-19 18:24:55,174 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-19 18:24:55,177 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-19 18:24:55,177 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-19 18:24:55,178 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-19 18:24:55,179 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-19 18:24:55,179 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-19 18:24:55,180 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-19 18:24:55,181 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-19 18:24:55,182 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-19 18:24:55,182 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-19 18:24:55,183 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-19 18:24:55,184 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-19 18:24:55,185 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-19 18:24:55,186 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-19 18:24:55,186 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-19 18:24:55,186 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-19 18:24:55,187 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-19 18:24:55,188 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-19 18:24:55,189 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2019-11-19 18:24:55,204 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-19 18:24:55,204 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-19 18:24:55,206 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-19 18:24:55,206 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-19 18:24:55,206 INFO L138 SettingsManager]: * Use SBE=true [2019-11-19 18:24:55,207 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-19 18:24:55,207 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-19 18:24:55,207 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-19 18:24:55,208 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-19 18:24:55,208 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-19 18:24:55,208 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-19 18:24:55,208 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-19 18:24:55,209 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-19 18:24:55,209 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-19 18:24:55,209 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-19 18:24:55,210 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-19 18:24:55,210 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-19 18:24:55,210 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-19 18:24:55,210 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-19 18:24:55,211 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-19 18:24:55,211 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-19 18:24:55,211 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-19 18:24:55,212 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-19 18:24:55,212 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-19 18:24:55,212 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-19 18:24:55,213 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-19 18:24:55,213 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-19 18:24:55,213 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-19 18:24:55,214 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 18:24:55,544 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-19 18:24:55,558 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-19 18:24:55,561 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-19 18:24:55,563 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-19 18:24:55,563 INFO L275 PluginConnector]: CDTParser initialized [2019-11-19 18:24:55,564 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/array-fpi/condaf.c [2019-11-19 18:24:55,636 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ffd25a927/b27afd8cfa114184a3eaee0f89a7cbb0/FLAGbcf18e90d [2019-11-19 18:24:56,094 INFO L306 CDTParser]: Found 1 translation units. [2019-11-19 18:24:56,094 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-fpi/condaf.c [2019-11-19 18:24:56,099 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ffd25a927/b27afd8cfa114184a3eaee0f89a7cbb0/FLAGbcf18e90d [2019-11-19 18:24:56,471 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ffd25a927/b27afd8cfa114184a3eaee0f89a7cbb0 [2019-11-19 18:24:56,475 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-19 18:24:56,477 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-11-19 18:24:56,478 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-19 18:24:56,478 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-19 18:24:56,482 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-19 18:24:56,483 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 06:24:56" (1/1) ... [2019-11-19 18:24:56,486 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@b1ff188 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:24:56, skipping insertion in model container [2019-11-19 18:24:56,487 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 06:24:56" (1/1) ... [2019-11-19 18:24:56,494 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-11-19 18:24:56,512 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-11-19 18:24:56,729 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-19 18:24:56,737 INFO L188 MainTranslator]: Completed pre-run [2019-11-19 18:24:56,756 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-19 18:24:56,772 INFO L192 MainTranslator]: Completed translation [2019-11-19 18:24:56,772 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:24:56 WrapperNode [2019-11-19 18:24:56,772 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-19 18:24:56,773 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-19 18:24:56,773 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-19 18:24:56,774 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-19 18:24:56,782 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:24:56" (1/1) ... [2019-11-19 18:24:56,851 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:24:56" (1/1) ... [2019-11-19 18:24:56,883 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-19 18:24:56,884 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-19 18:24:56,884 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-19 18:24:56,884 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-19 18:24:56,892 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:24:56" (1/1) ... [2019-11-19 18:24:56,892 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:24:56" (1/1) ... [2019-11-19 18:24:56,894 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:24:56" (1/1) ... [2019-11-19 18:24:56,895 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:24:56" (1/1) ... [2019-11-19 18:24:56,901 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:24:56" (1/1) ... [2019-11-19 18:24:56,906 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:24:56" (1/1) ... [2019-11-19 18:24:56,908 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:24:56" (1/1) ... [2019-11-19 18:24:56,910 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-19 18:24:56,911 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-19 18:24:56,911 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-19 18:24:56,911 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-19 18:24:56,912 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:24:56" (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 18:24:56,968 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-11-19 18:24:56,968 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-11-19 18:24:56,969 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-11-19 18:24:56,969 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-19 18:24:56,969 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-19 18:24:56,969 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-11-19 18:24:56,970 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-11-19 18:24:57,240 INFO L280 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-19 18:24:57,240 INFO L285 CfgBuilder]: Removed 9 assume(true) statements. [2019-11-19 18:24:57,245 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 06:24:57 BoogieIcfgContainer [2019-11-19 18:24:57,250 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-19 18:24:57,251 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-19 18:24:57,251 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-19 18:24:57,258 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-19 18:24:57,258 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 06:24:56" (1/3) ... [2019-11-19 18:24:57,259 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@253c96fe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 06:24:57, skipping insertion in model container [2019-11-19 18:24:57,261 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:24:56" (2/3) ... [2019-11-19 18:24:57,264 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@253c96fe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 06:24:57, skipping insertion in model container [2019-11-19 18:24:57,264 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 06:24:57" (3/3) ... [2019-11-19 18:24:57,268 INFO L109 eAbstractionObserver]: Analyzing ICFG condaf.c [2019-11-19 18:24:57,283 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-19 18:24:57,292 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-19 18:24:57,304 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-19 18:24:57,326 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-19 18:24:57,327 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-19 18:24:57,327 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-19 18:24:57,327 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-19 18:24:57,328 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-19 18:24:57,328 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-19 18:24:57,328 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-19 18:24:57,328 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-19 18:24:57,341 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states. [2019-11-19 18:24:57,347 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2019-11-19 18:24:57,348 INFO L402 BasicCegarLoop]: Found error trace [2019-11-19 18:24:57,348 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-19 18:24:57,349 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-19 18:24:57,355 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-19 18:24:57,355 INFO L82 PathProgramCache]: Analyzing trace with hash 1306593900, now seen corresponding path program 1 times [2019-11-19 18:24:57,365 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-19 18:24:57,365 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2046095918] [2019-11-19 18:24:57,366 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-19 18:24:57,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 18:24:57,508 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 18:24:57,509 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2046095918] [2019-11-19 18:24:57,510 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-19 18:24:57,511 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-11-19 18:24:57,512 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [872730207] [2019-11-19 18:24:57,518 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-11-19 18:24:57,519 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-19 18:24:57,530 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-11-19 18:24:57,531 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-11-19 18:24:57,532 INFO L87 Difference]: Start difference. First operand 20 states. Second operand 2 states. [2019-11-19 18:24:57,549 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-19 18:24:57,549 INFO L93 Difference]: Finished difference Result 35 states and 48 transitions. [2019-11-19 18:24:57,550 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-11-19 18:24:57,551 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 11 [2019-11-19 18:24:57,552 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-19 18:24:57,561 INFO L225 Difference]: With dead ends: 35 [2019-11-19 18:24:57,561 INFO L226 Difference]: Without dead ends: 16 [2019-11-19 18:24:57,565 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 18:24:57,583 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2019-11-19 18:24:57,597 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2019-11-19 18:24:57,598 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2019-11-19 18:24:57,599 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 19 transitions. [2019-11-19 18:24:57,600 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 19 transitions. Word has length 11 [2019-11-19 18:24:57,601 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-19 18:24:57,601 INFO L462 AbstractCegarLoop]: Abstraction has 16 states and 19 transitions. [2019-11-19 18:24:57,601 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-11-19 18:24:57,601 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 19 transitions. [2019-11-19 18:24:57,602 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2019-11-19 18:24:57,602 INFO L402 BasicCegarLoop]: Found error trace [2019-11-19 18:24:57,603 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-19 18:24:57,603 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-19 18:24:57,604 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-19 18:24:57,604 INFO L82 PathProgramCache]: Analyzing trace with hash -875432925, now seen corresponding path program 1 times [2019-11-19 18:24:57,604 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-19 18:24:57,605 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [759189812] [2019-11-19 18:24:57,605 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-19 18:24:57,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 18:24:57,695 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 18:24:57,696 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [759189812] [2019-11-19 18:24:57,696 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-19 18:24:57,696 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-19 18:24:57,697 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1324920960] [2019-11-19 18:24:57,698 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-19 18:24:57,699 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-19 18:24:57,699 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-19 18:24:57,699 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-19 18:24:57,699 INFO L87 Difference]: Start difference. First operand 16 states and 19 transitions. Second operand 3 states. [2019-11-19 18:24:57,745 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-19 18:24:57,745 INFO L93 Difference]: Finished difference Result 29 states and 35 transitions. [2019-11-19 18:24:57,745 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-19 18:24:57,747 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 11 [2019-11-19 18:24:57,747 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-19 18:24:57,748 INFO L225 Difference]: With dead ends: 29 [2019-11-19 18:24:57,748 INFO L226 Difference]: Without dead ends: 18 [2019-11-19 18:24:57,749 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 18:24:57,750 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2019-11-19 18:24:57,752 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 17. [2019-11-19 18:24:57,753 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2019-11-19 18:24:57,753 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 20 transitions. [2019-11-19 18:24:57,754 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 20 transitions. Word has length 11 [2019-11-19 18:24:57,754 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-19 18:24:57,754 INFO L462 AbstractCegarLoop]: Abstraction has 17 states and 20 transitions. [2019-11-19 18:24:57,754 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-19 18:24:57,754 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 20 transitions. [2019-11-19 18:24:57,755 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2019-11-19 18:24:57,755 INFO L402 BasicCegarLoop]: Found error trace [2019-11-19 18:24:57,755 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-19 18:24:57,755 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-19 18:24:57,756 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-19 18:24:57,756 INFO L82 PathProgramCache]: Analyzing trace with hash -100050171, now seen corresponding path program 1 times [2019-11-19 18:24:57,756 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-19 18:24:57,756 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1828937425] [2019-11-19 18:24:57,756 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-19 18:24:57,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 18:24:57,817 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 18:24:57,818 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1828937425] [2019-11-19 18:24:57,818 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-19 18:24:57,818 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-11-19 18:24:57,819 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [370948964] [2019-11-19 18:24:57,819 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-19 18:24:57,819 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-19 18:24:57,820 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-19 18:24:57,820 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-11-19 18:24:57,820 INFO L87 Difference]: Start difference. First operand 17 states and 20 transitions. Second operand 4 states. [2019-11-19 18:24:57,905 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-19 18:24:57,906 INFO L93 Difference]: Finished difference Result 30 states and 36 transitions. [2019-11-19 18:24:57,906 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-19 18:24:57,906 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 13 [2019-11-19 18:24:57,907 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-19 18:24:57,907 INFO L225 Difference]: With dead ends: 30 [2019-11-19 18:24:57,907 INFO L226 Difference]: Without dead ends: 23 [2019-11-19 18:24:57,908 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 18:24:57,909 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2019-11-19 18:24:57,912 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 19. [2019-11-19 18:24:57,912 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2019-11-19 18:24:57,913 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 22 transitions. [2019-11-19 18:24:57,913 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 22 transitions. Word has length 13 [2019-11-19 18:24:57,914 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-19 18:24:57,914 INFO L462 AbstractCegarLoop]: Abstraction has 19 states and 22 transitions. [2019-11-19 18:24:57,914 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-19 18:24:57,914 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 22 transitions. [2019-11-19 18:24:57,914 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2019-11-19 18:24:57,915 INFO L402 BasicCegarLoop]: Found error trace [2019-11-19 18:24:57,915 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 18:24:57,915 INFO L410 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-19 18:24:57,915 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-19 18:24:57,915 INFO L82 PathProgramCache]: Analyzing trace with hash 1777901324, now seen corresponding path program 1 times [2019-11-19 18:24:57,916 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-19 18:24:57,916 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [654261686] [2019-11-19 18:24:57,916 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-19 18:24:57,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 18:24:58,245 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 18:24:58,246 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [654261686] [2019-11-19 18:24:58,246 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1168884930] [2019-11-19 18:24:58,247 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 18:24:58,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 18:24:58,305 INFO L255 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 9 conjunts are in the unsatisfiable core [2019-11-19 18:24:58,311 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-19 18:24:58,378 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 18:24:58,379 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-19 18:24:58,384 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-19 18:24:58,385 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-11-19 18:24:58,385 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:11, output treesize:7 [2019-11-19 18:24:58,432 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 18:24:58,434 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-19 18:24:58,437 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-19 18:24:58,437 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 18:24:58,438 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:15, output treesize:3 [2019-11-19 18:24:58,451 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 18:24:58,452 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-19 18:24:58,452 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 10 [2019-11-19 18:24:58,453 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [158956316] [2019-11-19 18:24:58,454 INFO L442 AbstractCegarLoop]: Interpolant automaton has 10 states [2019-11-19 18:24:58,454 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-19 18:24:58,454 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2019-11-19 18:24:58,455 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2019-11-19 18:24:58,455 INFO L87 Difference]: Start difference. First operand 19 states and 22 transitions. Second operand 10 states. [2019-11-19 18:24:58,643 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-19 18:24:58,644 INFO L93 Difference]: Finished difference Result 34 states and 40 transitions. [2019-11-19 18:24:58,644 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-11-19 18:24:58,644 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 18 [2019-11-19 18:24:58,645 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-19 18:24:58,645 INFO L225 Difference]: With dead ends: 34 [2019-11-19 18:24:58,645 INFO L226 Difference]: Without dead ends: 23 [2019-11-19 18:24:58,647 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 18:24:58,647 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2019-11-19 18:24:58,651 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 20. [2019-11-19 18:24:58,651 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2019-11-19 18:24:58,652 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 23 transitions. [2019-11-19 18:24:58,652 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 23 transitions. Word has length 18 [2019-11-19 18:24:58,653 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-19 18:24:58,653 INFO L462 AbstractCegarLoop]: Abstraction has 20 states and 23 transitions. [2019-11-19 18:24:58,653 INFO L463 AbstractCegarLoop]: Interpolant automaton has 10 states. [2019-11-19 18:24:58,653 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 23 transitions. [2019-11-19 18:24:58,654 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2019-11-19 18:24:58,654 INFO L402 BasicCegarLoop]: Found error trace [2019-11-19 18:24:58,654 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 18:24:58,863 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-19 18:24:58,863 INFO L410 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-19 18:24:58,864 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-19 18:24:58,864 INFO L82 PathProgramCache]: Analyzing trace with hash 1384874314, now seen corresponding path program 1 times [2019-11-19 18:24:58,864 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-19 18:24:58,864 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [139227876] [2019-11-19 18:24:58,865 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-19 18:24:58,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-19 18:24:58,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-19 18:24:58,995 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-19 18:24:58,995 INFO L475 BasicCegarLoop]: Counterexample might be feasible [2019-11-19 18:24:59,031 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.11 06:24:59 BoogieIcfgContainer [2019-11-19 18:24:59,031 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-11-19 18:24:59,032 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-19 18:24:59,032 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-19 18:24:59,032 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-19 18:24:59,033 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 06:24:57" (3/4) ... [2019-11-19 18:24:59,036 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2019-11-19 18:24:59,096 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2019-11-19 18:24:59,097 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-19 18:24:59,099 INFO L168 Benchmark]: Toolchain (without parser) took 2622.13 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 143.1 MB). Free memory was 959.0 MB in the beginning and 995.2 MB in the end (delta: -36.1 MB). Peak memory consumption was 107.0 MB. Max. memory is 11.5 GB. [2019-11-19 18:24:59,100 INFO L168 Benchmark]: CDTParser took 0.29 ms. Allocated memory is still 1.0 GB. Free memory is still 987.2 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-19 18:24:59,101 INFO L168 Benchmark]: CACSL2BoogieTranslator took 294.71 ms. Allocated memory is still 1.0 GB. Free memory was 959.0 MB in the beginning and 948.3 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2019-11-19 18:24:59,102 INFO L168 Benchmark]: Boogie Procedure Inliner took 110.27 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 143.1 MB). Free memory was 948.3 MB in the beginning and 1.1 GB in the end (delta: -184.9 MB). Peak memory consumption was 9.8 MB. Max. memory is 11.5 GB. [2019-11-19 18:24:59,102 INFO L168 Benchmark]: Boogie Preprocessor took 26.82 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 18:24:59,103 INFO L168 Benchmark]: RCFGBuilder took 339.17 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: 20.0 MB). Peak memory consumption was 20.0 MB. Max. memory is 11.5 GB. [2019-11-19 18:24:59,104 INFO L168 Benchmark]: TraceAbstraction took 1780.33 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 995.2 MB in the end (delta: 118.1 MB). Peak memory consumption was 118.1 MB. Max. memory is 11.5 GB. [2019-11-19 18:24:59,105 INFO L168 Benchmark]: Witness Printer took 65.16 ms. Allocated memory is still 1.2 GB. Free memory is still 995.2 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-19 18:24:59,109 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.29 ms. Allocated memory is still 1.0 GB. Free memory is still 987.2 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 294.71 ms. Allocated memory is still 1.0 GB. Free memory was 959.0 MB in the beginning and 948.3 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 110.27 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 143.1 MB). Free memory was 948.3 MB in the beginning and 1.1 GB in the end (delta: -184.9 MB). Peak memory consumption was 9.8 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 26.82 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 339.17 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: 20.0 MB). Peak memory consumption was 20.0 MB. Max. memory is 11.5 GB. * TraceAbstraction took 1780.33 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 995.2 MB in the end (delta: 118.1 MB). Peak memory consumption was 118.1 MB. Max. memory is 11.5 GB. * Witness Printer took 65.16 ms. Allocated memory is still 1.2 GB. Free memory is still 995.2 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