./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/array-fpi/nsqmf.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/nsqmf.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 77c3d0fb70413cbc54fe34f29c209fe7f583a4aa ........................................................................................................................................................................................................................................................................................... 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 20:50:09,014 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-19 20:50:09,016 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-19 20:50:09,028 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-19 20:50:09,028 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-19 20:50:09,030 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-19 20:50:09,031 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-19 20:50:09,033 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-19 20:50:09,035 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-19 20:50:09,036 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-19 20:50:09,037 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-19 20:50:09,038 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-19 20:50:09,038 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-19 20:50:09,039 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-19 20:50:09,040 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-19 20:50:09,042 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-19 20:50:09,043 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-19 20:50:09,044 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-19 20:50:09,046 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-19 20:50:09,048 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-19 20:50:09,049 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-19 20:50:09,051 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-19 20:50:09,052 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-19 20:50:09,053 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-19 20:50:09,056 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-19 20:50:09,056 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-19 20:50:09,057 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-19 20:50:09,058 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-19 20:50:09,058 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-19 20:50:09,059 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-19 20:50:09,060 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-19 20:50:09,061 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-19 20:50:09,062 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-19 20:50:09,063 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-19 20:50:09,064 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-19 20:50:09,064 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-19 20:50:09,065 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-19 20:50:09,065 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-19 20:50:09,066 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-19 20:50:09,067 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-19 20:50:09,068 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-19 20:50:09,069 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2019-11-19 20:50:09,085 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-19 20:50:09,085 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-19 20:50:09,086 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-19 20:50:09,087 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-19 20:50:09,087 INFO L138 SettingsManager]: * Use SBE=true [2019-11-19 20:50:09,087 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-19 20:50:09,088 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-19 20:50:09,088 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-19 20:50:09,088 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-19 20:50:09,088 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-19 20:50:09,089 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-19 20:50:09,089 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-19 20:50:09,089 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-19 20:50:09,090 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-19 20:50:09,090 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-19 20:50:09,090 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-19 20:50:09,090 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-19 20:50:09,091 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-19 20:50:09,091 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-19 20:50:09,091 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-19 20:50:09,092 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-19 20:50:09,092 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-19 20:50:09,092 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-19 20:50:09,093 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-19 20:50:09,093 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-19 20:50:09,093 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-19 20:50:09,093 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-19 20:50:09,094 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-19 20:50:09,094 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 -> 77c3d0fb70413cbc54fe34f29c209fe7f583a4aa [2019-11-19 20:50:09,381 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-19 20:50:09,397 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-19 20:50:09,400 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-19 20:50:09,402 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-19 20:50:09,402 INFO L275 PluginConnector]: CDTParser initialized [2019-11-19 20:50:09,404 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/array-fpi/nsqmf.c [2019-11-19 20:50:09,472 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1912e0b46/b39b7718d5444057a89910d07d6c5d84/FLAGf318451e4 [2019-11-19 20:50:09,917 INFO L306 CDTParser]: Found 1 translation units. [2019-11-19 20:50:09,919 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-fpi/nsqmf.c [2019-11-19 20:50:09,926 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1912e0b46/b39b7718d5444057a89910d07d6c5d84/FLAGf318451e4 [2019-11-19 20:50:10,301 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1912e0b46/b39b7718d5444057a89910d07d6c5d84 [2019-11-19 20:50:10,304 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-19 20:50:10,306 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-11-19 20:50:10,307 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-19 20:50:10,307 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-19 20:50:10,311 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-19 20:50:10,312 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 08:50:10" (1/1) ... [2019-11-19 20:50:10,315 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7d2f4759 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:50:10, skipping insertion in model container [2019-11-19 20:50:10,315 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 08:50:10" (1/1) ... [2019-11-19 20:50:10,323 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-11-19 20:50:10,347 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-11-19 20:50:10,582 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-19 20:50:10,597 INFO L188 MainTranslator]: Completed pre-run [2019-11-19 20:50:10,623 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-19 20:50:10,637 INFO L192 MainTranslator]: Completed translation [2019-11-19 20:50:10,637 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:50:10 WrapperNode [2019-11-19 20:50:10,638 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-19 20:50:10,638 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-19 20:50:10,639 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-19 20:50:10,639 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-19 20:50:10,645 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:50:10" (1/1) ... [2019-11-19 20:50:10,708 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:50:10" (1/1) ... [2019-11-19 20:50:10,730 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-19 20:50:10,730 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-19 20:50:10,731 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-19 20:50:10,731 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-19 20:50:10,740 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:50:10" (1/1) ... [2019-11-19 20:50:10,740 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:50:10" (1/1) ... [2019-11-19 20:50:10,742 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:50:10" (1/1) ... [2019-11-19 20:50:10,742 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:50:10" (1/1) ... [2019-11-19 20:50:10,748 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:50:10" (1/1) ... [2019-11-19 20:50:10,753 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:50:10" (1/1) ... [2019-11-19 20:50:10,754 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:50:10" (1/1) ... [2019-11-19 20:50:10,757 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-19 20:50:10,757 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-19 20:50:10,757 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-19 20:50:10,757 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-19 20:50:10,759 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:50:10" (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 20:50:10,810 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-11-19 20:50:10,811 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-11-19 20:50:10,811 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-19 20:50:10,811 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-19 20:50:10,812 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-11-19 20:50:11,068 INFO L280 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-19 20:50:11,068 INFO L285 CfgBuilder]: Removed 9 assume(true) statements. [2019-11-19 20:50:11,070 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 08:50:11 BoogieIcfgContainer [2019-11-19 20:50:11,070 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-19 20:50:11,077 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-19 20:50:11,081 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-19 20:50:11,087 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-19 20:50:11,089 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 08:50:10" (1/3) ... [2019-11-19 20:50:11,090 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@a0d0fac and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 08:50:11, skipping insertion in model container [2019-11-19 20:50:11,092 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:50:10" (2/3) ... [2019-11-19 20:50:11,092 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@a0d0fac and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 08:50:11, skipping insertion in model container [2019-11-19 20:50:11,093 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 08:50:11" (3/3) ... [2019-11-19 20:50:11,098 INFO L109 eAbstractionObserver]: Analyzing ICFG nsqmf.c [2019-11-19 20:50:11,119 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-19 20:50:11,128 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-19 20:50:11,140 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-19 20:50:11,172 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-19 20:50:11,172 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-19 20:50:11,173 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-19 20:50:11,173 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-19 20:50:11,173 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-19 20:50:11,173 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-19 20:50:11,173 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-19 20:50:11,173 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-19 20:50:11,185 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states. [2019-11-19 20:50:11,190 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2019-11-19 20:50:11,190 INFO L402 BasicCegarLoop]: Found error trace [2019-11-19 20:50:11,191 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-19 20:50:11,191 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-19 20:50:11,196 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-19 20:50:11,197 INFO L82 PathProgramCache]: Analyzing trace with hash -1486647931, now seen corresponding path program 1 times [2019-11-19 20:50:11,205 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-19 20:50:11,205 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1936878555] [2019-11-19 20:50:11,205 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-19 20:50:11,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 20:50:11,324 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 20:50:11,324 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1936878555] [2019-11-19 20:50:11,325 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-19 20:50:11,325 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-11-19 20:50:11,326 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1782698823] [2019-11-19 20:50:11,330 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-11-19 20:50:11,330 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-19 20:50:11,340 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-11-19 20:50:11,341 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-11-19 20:50:11,342 INFO L87 Difference]: Start difference. First operand 19 states. Second operand 2 states. [2019-11-19 20:50:11,356 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-19 20:50:11,356 INFO L93 Difference]: Finished difference Result 33 states and 44 transitions. [2019-11-19 20:50:11,356 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-11-19 20:50:11,358 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 10 [2019-11-19 20:50:11,358 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-19 20:50:11,365 INFO L225 Difference]: With dead ends: 33 [2019-11-19 20:50:11,365 INFO L226 Difference]: Without dead ends: 15 [2019-11-19 20:50:11,367 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 20:50:11,382 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2019-11-19 20:50:11,394 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2019-11-19 20:50:11,396 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2019-11-19 20:50:11,397 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 17 transitions. [2019-11-19 20:50:11,398 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 17 transitions. Word has length 10 [2019-11-19 20:50:11,399 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-19 20:50:11,399 INFO L462 AbstractCegarLoop]: Abstraction has 15 states and 17 transitions. [2019-11-19 20:50:11,399 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-11-19 20:50:11,399 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 17 transitions. [2019-11-19 20:50:11,400 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2019-11-19 20:50:11,400 INFO L402 BasicCegarLoop]: Found error trace [2019-11-19 20:50:11,400 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-19 20:50:11,401 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-19 20:50:11,401 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-19 20:50:11,401 INFO L82 PathProgramCache]: Analyzing trace with hash 1772723449, now seen corresponding path program 1 times [2019-11-19 20:50:11,401 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-19 20:50:11,402 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1145504688] [2019-11-19 20:50:11,402 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-19 20:50:11,420 ERROR L271 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2019-11-19 20:50:11,421 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [636614165] [2019-11-19 20:50:11,421 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 20:50:11,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-19 20:50:11,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-19 20:50:11,522 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-19 20:50:11,523 INFO L475 BasicCegarLoop]: Counterexample might be feasible [2019-11-19 20:50:11,725 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-19 20:50:11,755 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.11 08:50:11 BoogieIcfgContainer [2019-11-19 20:50:11,755 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-11-19 20:50:11,756 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-19 20:50:11,756 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-19 20:50:11,756 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-19 20:50:11,757 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 08:50:11" (3/4) ... [2019-11-19 20:50:11,761 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2019-11-19 20:50:11,806 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2019-11-19 20:50:11,807 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-19 20:50:11,809 INFO L168 Benchmark]: Toolchain (without parser) took 1502.83 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 136.8 MB). Free memory was 956.3 MB in the beginning and 1.1 GB in the end (delta: -113.1 MB). Peak memory consumption was 23.8 MB. Max. memory is 11.5 GB. [2019-11-19 20:50:11,810 INFO L168 Benchmark]: CDTParser took 0.31 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 20:50:11,811 INFO L168 Benchmark]: CACSL2BoogieTranslator took 331.00 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 20:50:11,814 INFO L168 Benchmark]: Boogie Procedure Inliner took 91.62 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 136.8 MB). Free memory was 945.6 MB in the beginning and 1.1 GB in the end (delta: -186.2 MB). Peak memory consumption was 9.8 MB. Max. memory is 11.5 GB. [2019-11-19 20:50:11,815 INFO L168 Benchmark]: Boogie Preprocessor took 26.46 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 6.6 MB). Peak memory consumption was 6.6 MB. Max. memory is 11.5 GB. [2019-11-19 20:50:11,815 INFO L168 Benchmark]: RCFGBuilder took 318.72 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: 17.5 MB). Peak memory consumption was 17.5 MB. Max. memory is 11.5 GB. [2019-11-19 20:50:11,816 INFO L168 Benchmark]: TraceAbstraction took 678.28 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: 31.7 MB). Peak memory consumption was 31.7 MB. Max. memory is 11.5 GB. [2019-11-19 20:50:11,818 INFO L168 Benchmark]: Witness Printer took 50.99 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 6.6 MB). Peak memory consumption was 6.6 MB. Max. memory is 11.5 GB. [2019-11-19 20:50:11,824 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.31 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 331.00 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 91.62 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 136.8 MB). Free memory was 945.6 MB in the beginning and 1.1 GB in the end (delta: -186.2 MB). Peak memory consumption was 9.8 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 26.46 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 6.6 MB). Peak memory consumption was 6.6 MB. Max. memory is 11.5 GB. * RCFGBuilder took 318.72 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: 17.5 MB). Peak memory consumption was 17.5 MB. Max. memory is 11.5 GB. * TraceAbstraction took 678.28 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: 31.7 MB). Peak memory consumption was 31.7 MB. Max. memory is 11.5 GB. * Witness Printer took 50.99 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 6.6 MB). Peak memory consumption was 6.6 MB. 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] long long *a = malloc(sizeof(long long)*N); [L24] long long *b = malloc(sizeof(long long)*N); [L26] b[0] = 1 [L27] a[0] = 1 [L29] i=1 VAL [N=1] [L29] COND FALSE !(i