./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/array-fpi/indp3f.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 54858612 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.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/indp3f.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 7e99da8898d29fd1a1f0516fcdc70c4161903def ....................................................................................................................................................................................................................................................................................................................................................................... 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 0.2.0-5485861 [2020-10-25 19:27:39,851 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-25 19:27:39,856 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-25 19:27:39,912 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-25 19:27:39,912 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-25 19:27:39,919 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-25 19:27:39,923 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-25 19:27:39,931 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-25 19:27:39,935 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-25 19:27:39,944 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-25 19:27:39,945 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-25 19:27:39,947 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-25 19:27:39,952 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-25 19:27:39,955 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-25 19:27:39,957 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-25 19:27:39,959 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-25 19:27:39,961 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-25 19:27:39,962 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-25 19:27:39,969 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-25 19:27:39,972 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-25 19:27:39,978 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-25 19:27:39,981 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-25 19:27:39,982 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-25 19:27:39,984 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-25 19:27:39,988 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-25 19:27:39,991 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-25 19:27:39,991 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-25 19:27:39,994 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-25 19:27:39,994 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-25 19:27:39,995 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-25 19:27:39,996 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-25 19:27:39,997 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-25 19:27:40,000 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-25 19:27:40,001 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-25 19:27:40,002 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-25 19:27:40,003 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-25 19:27:40,006 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-25 19:27:40,006 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-25 19:27:40,007 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-25 19:27:40,009 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-25 19:27:40,010 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-25 19:27:40,011 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-25 19:27:40,069 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-25 19:27:40,070 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-25 19:27:40,074 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-25 19:27:40,075 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-25 19:27:40,075 INFO L138 SettingsManager]: * Use SBE=true [2020-10-25 19:27:40,075 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-25 19:27:40,076 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-25 19:27:40,076 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-25 19:27:40,077 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-25 19:27:40,077 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-25 19:27:40,078 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-25 19:27:40,078 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-25 19:27:40,079 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-25 19:27:40,079 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-25 19:27:40,079 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-25 19:27:40,079 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-25 19:27:40,080 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-25 19:27:40,080 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-25 19:27:40,080 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-25 19:27:40,080 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-25 19:27:40,081 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-25 19:27:40,081 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-25 19:27:40,081 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-25 19:27:40,082 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-25 19:27:40,082 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-25 19:27:40,082 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-25 19:27:40,082 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-25 19:27:40,083 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-25 19:27:40,083 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-25 19:27:40,083 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 7e99da8898d29fd1a1f0516fcdc70c4161903def [2020-10-25 19:27:40,531 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-25 19:27:40,582 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-25 19:27:40,587 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-25 19:27:40,589 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-25 19:27:40,590 INFO L275 PluginConnector]: CDTParser initialized [2020-10-25 19:27:40,591 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/array-fpi/indp3f.c [2020-10-25 19:27:40,670 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0690fea0c/02f3ef8936324ee09e6e40abfe065d45/FLAG6e2ef38db [2020-10-25 19:27:41,274 INFO L306 CDTParser]: Found 1 translation units. [2020-10-25 19:27:41,275 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-fpi/indp3f.c [2020-10-25 19:27:41,284 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0690fea0c/02f3ef8936324ee09e6e40abfe065d45/FLAG6e2ef38db [2020-10-25 19:27:41,644 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0690fea0c/02f3ef8936324ee09e6e40abfe065d45 [2020-10-25 19:27:41,647 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-25 19:27:41,654 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-10-25 19:27:41,658 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-25 19:27:41,658 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-25 19:27:41,662 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-25 19:27:41,664 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.10 07:27:41" (1/1) ... [2020-10-25 19:27:41,667 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@19dd10f4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 07:27:41, skipping insertion in model container [2020-10-25 19:27:41,668 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.10 07:27:41" (1/1) ... [2020-10-25 19:27:41,677 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-25 19:27:41,701 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-25 19:27:41,996 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-25 19:27:42,008 INFO L203 MainTranslator]: Completed pre-run [2020-10-25 19:27:42,033 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-25 19:27:42,055 INFO L208 MainTranslator]: Completed translation [2020-10-25 19:27:42,056 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 07:27:42 WrapperNode [2020-10-25 19:27:42,057 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-25 19:27:42,058 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-25 19:27:42,058 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-25 19:27:42,059 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-25 19:27:42,068 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 07:27:42" (1/1) ... [2020-10-25 19:27:42,079 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 07:27:42" (1/1) ... [2020-10-25 19:27:42,109 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-25 19:27:42,110 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-25 19:27:42,111 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-25 19:27:42,111 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-25 19:27:42,122 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 07:27:42" (1/1) ... [2020-10-25 19:27:42,123 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 07:27:42" (1/1) ... [2020-10-25 19:27:42,126 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 07:27:42" (1/1) ... [2020-10-25 19:27:42,126 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 07:27:42" (1/1) ... [2020-10-25 19:27:42,133 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 07:27:42" (1/1) ... [2020-10-25 19:27:42,139 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 07:27:42" (1/1) ... [2020-10-25 19:27:42,141 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 07:27:42" (1/1) ... [2020-10-25 19:27:42,144 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-25 19:27:42,146 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-25 19:27:42,146 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-25 19:27:42,146 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-25 19:27:42,148 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 07:27:42" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-25 19:27:42,246 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-25 19:27:42,246 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-25 19:27:42,247 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-25 19:27:42,247 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-10-25 19:27:42,247 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-25 19:27:42,248 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-25 19:27:42,248 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-25 19:27:42,610 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-25 19:27:42,611 INFO L298 CfgBuilder]: Removed 15 assume(true) statements. [2020-10-25 19:27:42,613 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.10 07:27:42 BoogieIcfgContainer [2020-10-25 19:27:42,614 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-25 19:27:42,616 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-25 19:27:42,616 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-25 19:27:42,621 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-25 19:27:42,621 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.10 07:27:41" (1/3) ... [2020-10-25 19:27:42,622 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2279422e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.10 07:27:42, skipping insertion in model container [2020-10-25 19:27:42,623 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 07:27:42" (2/3) ... [2020-10-25 19:27:42,623 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2279422e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.10 07:27:42, skipping insertion in model container [2020-10-25 19:27:42,623 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.10 07:27:42" (3/3) ... [2020-10-25 19:27:42,626 INFO L111 eAbstractionObserver]: Analyzing ICFG indp3f.c [2020-10-25 19:27:42,641 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-25 19:27:42,647 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-25 19:27:42,661 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-25 19:27:42,702 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-25 19:27:42,703 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-25 19:27:42,703 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-25 19:27:42,703 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-25 19:27:42,704 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-25 19:27:42,704 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-25 19:27:42,704 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-25 19:27:42,704 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-25 19:27:42,724 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states. [2020-10-25 19:27:42,733 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-10-25 19:27:42,734 INFO L414 BasicCegarLoop]: Found error trace [2020-10-25 19:27:42,735 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-25 19:27:42,735 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-25 19:27:42,752 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-25 19:27:42,753 INFO L82 PathProgramCache]: Analyzing trace with hash 1389277550, now seen corresponding path program 1 times [2020-10-25 19:27:42,764 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-25 19:27:42,764 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1335894994] [2020-10-25 19:27:42,765 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-25 19:27:42,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-25 19:27:42,982 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-25 19:27:42,984 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1335894994] [2020-10-25 19:27:42,985 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-25 19:27:42,985 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-25 19:27:42,986 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [567895064] [2020-10-25 19:27:42,991 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-10-25 19:27:42,992 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-25 19:27:43,007 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-10-25 19:27:43,008 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-10-25 19:27:43,011 INFO L87 Difference]: Start difference. First operand 28 states. Second operand 2 states. [2020-10-25 19:27:43,033 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-25 19:27:43,034 INFO L93 Difference]: Finished difference Result 51 states and 73 transitions. [2020-10-25 19:27:43,034 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-10-25 19:27:43,036 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 16 [2020-10-25 19:27:43,037 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-25 19:27:43,046 INFO L225 Difference]: With dead ends: 51 [2020-10-25 19:27:43,047 INFO L226 Difference]: Without dead ends: 23 [2020-10-25 19:27:43,050 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-10-25 19:27:43,069 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2020-10-25 19:27:43,084 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2020-10-25 19:27:43,086 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2020-10-25 19:27:43,087 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 27 transitions. [2020-10-25 19:27:43,089 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 27 transitions. Word has length 16 [2020-10-25 19:27:43,089 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-25 19:27:43,090 INFO L481 AbstractCegarLoop]: Abstraction has 23 states and 27 transitions. [2020-10-25 19:27:43,090 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-10-25 19:27:43,090 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 27 transitions. [2020-10-25 19:27:43,091 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-10-25 19:27:43,091 INFO L414 BasicCegarLoop]: Found error trace [2020-10-25 19:27:43,091 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-25 19:27:43,092 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-25 19:27:43,092 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-25 19:27:43,093 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-25 19:27:43,094 INFO L82 PathProgramCache]: Analyzing trace with hash 796930410, now seen corresponding path program 1 times [2020-10-25 19:27:43,094 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-25 19:27:43,094 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [312096315] [2020-10-25 19:27:43,095 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-25 19:27:43,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-25 19:27:43,220 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-25 19:27:43,220 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [312096315] [2020-10-25 19:27:43,221 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-25 19:27:43,225 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-25 19:27:43,225 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [528525334] [2020-10-25 19:27:43,227 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-25 19:27:43,227 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-25 19:27:43,228 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-25 19:27:43,229 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-10-25 19:27:43,231 INFO L87 Difference]: Start difference. First operand 23 states and 27 transitions. Second operand 4 states. [2020-10-25 19:27:43,418 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-25 19:27:43,418 INFO L93 Difference]: Finished difference Result 53 states and 64 transitions. [2020-10-25 19:27:43,419 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-25 19:27:43,420 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 16 [2020-10-25 19:27:43,420 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-25 19:27:43,421 INFO L225 Difference]: With dead ends: 53 [2020-10-25 19:27:43,421 INFO L226 Difference]: Without dead ends: 37 [2020-10-25 19:27:43,422 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-10-25 19:27:43,423 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2020-10-25 19:27:43,429 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 27. [2020-10-25 19:27:43,430 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2020-10-25 19:27:43,431 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 31 transitions. [2020-10-25 19:27:43,431 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 31 transitions. Word has length 16 [2020-10-25 19:27:43,431 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-25 19:27:43,431 INFO L481 AbstractCegarLoop]: Abstraction has 27 states and 31 transitions. [2020-10-25 19:27:43,432 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-25 19:27:43,432 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 31 transitions. [2020-10-25 19:27:43,433 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-10-25 19:27:43,433 INFO L414 BasicCegarLoop]: Found error trace [2020-10-25 19:27:43,433 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-25 19:27:43,434 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-25 19:27:43,434 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-25 19:27:43,435 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-25 19:27:43,435 INFO L82 PathProgramCache]: Analyzing trace with hash 495241442, now seen corresponding path program 1 times [2020-10-25 19:27:43,435 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-25 19:27:43,436 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1895070341] [2020-10-25 19:27:43,436 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-25 19:27:43,452 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-10-25 19:27:43,453 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [814850278] [2020-10-25 19:27:43,453 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-25 19:27:43,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-25 19:27:43,560 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-25 19:27:43,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-25 19:27:43,607 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-25 19:27:43,649 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-25 19:27:43,649 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-25 19:27:43,863 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2020-10-25 19:27:43,924 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.10 07:27:43 BoogieIcfgContainer [2020-10-25 19:27:43,924 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-25 19:27:43,925 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-10-25 19:27:43,925 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-10-25 19:27:43,926 INFO L275 PluginConnector]: Witness Printer initialized [2020-10-25 19:27:43,927 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.10 07:27:42" (3/4) ... [2020-10-25 19:27:43,930 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2020-10-25 19:27:44,058 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2020-10-25 19:27:44,060 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-10-25 19:27:44,064 INFO L168 Benchmark]: Toolchain (without parser) took 2412.59 ms. Allocated memory was 48.2 MB in the beginning and 58.7 MB in the end (delta: 10.5 MB). Free memory was 25.6 MB in the beginning and 33.7 MB in the end (delta: -8.1 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2020-10-25 19:27:44,066 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 48.2 MB. Free memory was 31.3 MB in the beginning and 31.2 MB in the end (delta: 39.4 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-10-25 19:27:44,067 INFO L168 Benchmark]: CACSL2BoogieTranslator took 399.59 ms. Allocated memory is still 48.2 MB. Free memory was 24.9 MB in the beginning and 28.3 MB in the end (delta: -3.4 MB). Peak memory consumption was 7.6 MB. Max. memory is 16.1 GB. [2020-10-25 19:27:44,069 INFO L168 Benchmark]: Boogie Procedure Inliner took 51.45 ms. Allocated memory is still 48.2 MB. Free memory was 28.3 MB in the beginning and 26.6 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-10-25 19:27:44,073 INFO L168 Benchmark]: Boogie Preprocessor took 34.33 ms. Allocated memory is still 48.2 MB. Free memory was 26.6 MB in the beginning and 25.4 MB in the end (delta: 1.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-10-25 19:27:44,074 INFO L168 Benchmark]: RCFGBuilder took 468.31 ms. Allocated memory is still 48.2 MB. Free memory was 25.4 MB in the beginning and 23.3 MB in the end (delta: 2.1 MB). Peak memory consumption was 9.9 MB. Max. memory is 16.1 GB. [2020-10-25 19:27:44,075 INFO L168 Benchmark]: TraceAbstraction took 1308.40 ms. Allocated memory was 48.2 MB in the beginning and 58.7 MB in the end (delta: 10.5 MB). Free memory was 22.8 MB in the beginning and 36.7 MB in the end (delta: -13.9 MB). Peak memory consumption was 14.0 MB. Max. memory is 16.1 GB. [2020-10-25 19:27:44,077 INFO L168 Benchmark]: Witness Printer took 135.31 ms. Allocated memory is still 58.7 MB. Free memory was 36.7 MB in the beginning and 33.7 MB in the end (delta: 3.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-10-25 19:27:44,088 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 ms. Allocated memory is still 48.2 MB. Free memory was 31.3 MB in the beginning and 31.2 MB in the end (delta: 39.4 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 399.59 ms. Allocated memory is still 48.2 MB. Free memory was 24.9 MB in the beginning and 28.3 MB in the end (delta: -3.4 MB). Peak memory consumption was 7.6 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 51.45 ms. Allocated memory is still 48.2 MB. Free memory was 28.3 MB in the beginning and 26.6 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 34.33 ms. Allocated memory is still 48.2 MB. Free memory was 26.6 MB in the beginning and 25.4 MB in the end (delta: 1.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 468.31 ms. Allocated memory is still 48.2 MB. Free memory was 25.4 MB in the beginning and 23.3 MB in the end (delta: 2.1 MB). Peak memory consumption was 9.9 MB. Max. memory is 16.1 GB. * TraceAbstraction took 1308.40 ms. Allocated memory was 48.2 MB in the beginning and 58.7 MB in the end (delta: 10.5 MB). Free memory was 22.8 MB in the beginning and 36.7 MB in the end (delta: -13.9 MB). Peak memory consumption was 14.0 MB. Max. memory is 16.1 GB. * Witness Printer took 135.31 ms. Allocated memory is still 58.7 MB. Free memory was 36.7 MB in the beginning and 33.7 MB in the end (delta: 3.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 10]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L19] int N; VAL [N=0] [L23] N = __VERIFIER_nondet_int() [L24] COND FALSE !(N <= 0) [L13] COND FALSE !(!cond) VAL [N=1] [L27] int i; [L28] long long *a = malloc(sizeof(long long)*N); [L30] i=0 VAL [N=1] [L30] COND TRUE i