./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/array-fpi/condmf.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/condmf.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 e84fa47d445c1764a4d529303801930082611d3b ................................................................................................................................................................................................................................................................................................................................................. 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 19:25:34,494 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-25 19:25:34,497 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-25 19:25:34,552 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-25 19:25:34,553 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-25 19:25:34,558 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-25 19:25:34,561 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-25 19:25:34,568 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-25 19:25:34,575 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-25 19:25:34,582 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-25 19:25:34,583 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-25 19:25:34,585 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-25 19:25:34,585 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-25 19:25:34,589 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-25 19:25:34,591 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-25 19:25:34,592 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-25 19:25:34,594 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-25 19:25:34,598 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-25 19:25:34,603 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-25 19:25:34,605 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-25 19:25:34,607 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-25 19:25:34,609 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-25 19:25:34,610 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-25 19:25:34,611 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-25 19:25:34,614 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-25 19:25:34,615 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-25 19:25:34,615 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-25 19:25:34,616 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-25 19:25:34,617 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-25 19:25:34,618 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-25 19:25:34,619 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-25 19:25:34,620 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-25 19:25:34,621 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-25 19:25:34,622 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-25 19:25:34,623 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-25 19:25:34,624 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-25 19:25:34,625 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-25 19:25:34,625 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-25 19:25:34,625 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-25 19:25:34,626 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-25 19:25:34,627 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-25 19:25:34,628 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-25 19:25:34,669 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-25 19:25:34,669 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-25 19:25:34,671 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-25 19:25:34,672 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-25 19:25:34,672 INFO L138 SettingsManager]: * Use SBE=true [2020-10-25 19:25:34,672 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-25 19:25:34,673 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-25 19:25:34,673 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-25 19:25:34,673 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-25 19:25:34,673 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-25 19:25:34,674 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-25 19:25:34,674 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-25 19:25:34,674 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-25 19:25:34,674 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-25 19:25:34,675 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-25 19:25:34,675 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-25 19:25:34,675 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-25 19:25:34,676 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-25 19:25:34,676 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-25 19:25:34,676 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-25 19:25:34,676 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-25 19:25:34,677 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-25 19:25:34,677 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-25 19:25:34,677 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-25 19:25:34,677 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-25 19:25:34,678 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-25 19:25:34,678 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-25 19:25:34,678 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-25 19:25:34,678 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-25 19:25:34,679 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e84fa47d445c1764a4d529303801930082611d3b [2020-10-25 19:25:35,098 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-25 19:25:35,132 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-25 19:25:35,137 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-25 19:25:35,139 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-25 19:25:35,140 INFO L275 PluginConnector]: CDTParser initialized [2020-10-25 19:25:35,142 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/array-fpi/condmf.c [2020-10-25 19:25:35,222 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3b8497ac8/2bc830d2ecd64075910cc0e002752df7/FLAG8a4e03d5e [2020-10-25 19:25:35,834 INFO L306 CDTParser]: Found 1 translation units. [2020-10-25 19:25:35,834 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-fpi/condmf.c [2020-10-25 19:25:35,843 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3b8497ac8/2bc830d2ecd64075910cc0e002752df7/FLAG8a4e03d5e [2020-10-25 19:25:36,204 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3b8497ac8/2bc830d2ecd64075910cc0e002752df7 [2020-10-25 19:25:36,207 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-25 19:25:36,213 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-10-25 19:25:36,218 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-25 19:25:36,219 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-25 19:25:36,223 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-25 19:25:36,225 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.10 07:25:36" (1/1) ... [2020-10-25 19:25:36,228 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@592a0ddb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 07:25:36, skipping insertion in model container [2020-10-25 19:25:36,229 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.10 07:25:36" (1/1) ... [2020-10-25 19:25:36,239 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-25 19:25:36,263 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-25 19:25:36,478 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-25 19:25:36,491 INFO L203 MainTranslator]: Completed pre-run [2020-10-25 19:25:36,515 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-25 19:25:36,536 INFO L208 MainTranslator]: Completed translation [2020-10-25 19:25:36,537 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 07:25:36 WrapperNode [2020-10-25 19:25:36,538 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-25 19:25:36,540 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-25 19:25:36,540 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-25 19:25:36,540 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-25 19:25:36,551 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 07:25:36" (1/1) ... [2020-10-25 19:25:36,561 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 07:25:36" (1/1) ... [2020-10-25 19:25:36,587 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-25 19:25:36,588 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-25 19:25:36,588 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-25 19:25:36,589 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-25 19:25:36,600 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 07:25:36" (1/1) ... [2020-10-25 19:25:36,600 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 07:25:36" (1/1) ... [2020-10-25 19:25:36,603 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 07:25:36" (1/1) ... [2020-10-25 19:25:36,603 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 07:25:36" (1/1) ... [2020-10-25 19:25:36,609 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 07:25:36" (1/1) ... [2020-10-25 19:25:36,615 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 07:25:36" (1/1) ... [2020-10-25 19:25:36,617 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 07:25:36" (1/1) ... [2020-10-25 19:25:36,619 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-25 19:25:36,621 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-25 19:25:36,621 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-25 19:25:36,621 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-25 19:25:36,622 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 07:25:36" (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 19:25:36,727 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-25 19:25:36,728 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-25 19:25:36,728 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-25 19:25:36,728 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-10-25 19:25:36,729 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-25 19:25:36,729 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-25 19:25:36,729 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-25 19:25:37,164 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-25 19:25:37,165 INFO L298 CfgBuilder]: Removed 13 assume(true) statements. [2020-10-25 19:25:37,168 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.10 07:25:37 BoogieIcfgContainer [2020-10-25 19:25:37,168 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-25 19:25:37,181 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-25 19:25:37,181 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-25 19:25:37,185 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-25 19:25:37,186 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.10 07:25:36" (1/3) ... [2020-10-25 19:25:37,187 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@9d8d456 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.10 07:25:37, skipping insertion in model container [2020-10-25 19:25:37,187 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 07:25:36" (2/3) ... [2020-10-25 19:25:37,188 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@9d8d456 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.10 07:25:37, skipping insertion in model container [2020-10-25 19:25:37,188 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.10 07:25:37" (3/3) ... [2020-10-25 19:25:37,190 INFO L111 eAbstractionObserver]: Analyzing ICFG condmf.c [2020-10-25 19:25:37,206 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-25 19:25:37,213 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-25 19:25:37,229 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-25 19:25:37,272 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-25 19:25:37,273 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-25 19:25:37,273 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-25 19:25:37,273 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-25 19:25:37,273 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-25 19:25:37,274 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-25 19:25:37,274 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-25 19:25:37,274 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-25 19:25:37,296 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states. [2020-10-25 19:25:37,303 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-25 19:25:37,304 INFO L414 BasicCegarLoop]: Found error trace [2020-10-25 19:25:37,305 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-25 19:25:37,305 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-25 19:25:37,313 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-25 19:25:37,314 INFO L82 PathProgramCache]: Analyzing trace with hash -1828392228, now seen corresponding path program 1 times [2020-10-25 19:25:37,324 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-25 19:25:37,325 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1649363879] [2020-10-25 19:25:37,326 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-25 19:25:37,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-25 19:25:37,555 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 19:25:37,557 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1649363879] [2020-10-25 19:25:37,558 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-25 19:25:37,559 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-25 19:25:37,560 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2041092900] [2020-10-25 19:25:37,567 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-10-25 19:25:37,568 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-25 19:25:37,590 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-10-25 19:25:37,591 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-10-25 19:25:37,594 INFO L87 Difference]: Start difference. First operand 23 states. Second operand 2 states. [2020-10-25 19:25:37,618 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-25 19:25:37,619 INFO L93 Difference]: Finished difference Result 41 states and 57 transitions. [2020-10-25 19:25:37,620 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-10-25 19:25:37,621 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 12 [2020-10-25 19:25:37,622 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-25 19:25:37,631 INFO L225 Difference]: With dead ends: 41 [2020-10-25 19:25:37,632 INFO L226 Difference]: Without dead ends: 18 [2020-10-25 19:25:37,638 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 19:25:37,670 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2020-10-25 19:25:37,686 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2020-10-25 19:25:37,688 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2020-10-25 19:25:37,689 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 21 transitions. [2020-10-25 19:25:37,691 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 21 transitions. Word has length 12 [2020-10-25 19:25:37,692 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-25 19:25:37,692 INFO L481 AbstractCegarLoop]: Abstraction has 18 states and 21 transitions. [2020-10-25 19:25:37,692 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-10-25 19:25:37,693 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 21 transitions. [2020-10-25 19:25:37,693 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-25 19:25:37,694 INFO L414 BasicCegarLoop]: Found error trace [2020-10-25 19:25:37,694 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-25 19:25:37,695 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-25 19:25:37,695 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-25 19:25:37,696 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-25 19:25:37,696 INFO L82 PathProgramCache]: Analyzing trace with hash -1148333858, now seen corresponding path program 1 times [2020-10-25 19:25:37,696 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-25 19:25:37,697 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1535678694] [2020-10-25 19:25:37,697 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-25 19:25:37,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-25 19:25:37,796 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 19:25:37,796 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1535678694] [2020-10-25 19:25:37,797 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-25 19:25:37,797 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-25 19:25:37,797 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1051770164] [2020-10-25 19:25:37,799 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-25 19:25:37,800 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-25 19:25:37,801 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-25 19:25:37,802 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-10-25 19:25:37,802 INFO L87 Difference]: Start difference. First operand 18 states and 21 transitions. Second operand 4 states. [2020-10-25 19:25:37,944 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-25 19:25:37,945 INFO L93 Difference]: Finished difference Result 40 states and 48 transitions. [2020-10-25 19:25:37,946 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-25 19:25:37,947 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 12 [2020-10-25 19:25:37,947 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-25 19:25:37,948 INFO L225 Difference]: With dead ends: 40 [2020-10-25 19:25:37,948 INFO L226 Difference]: Without dead ends: 29 [2020-10-25 19:25:37,950 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 19:25:37,950 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2020-10-25 19:25:37,955 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 20. [2020-10-25 19:25:37,956 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2020-10-25 19:25:37,957 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 23 transitions. [2020-10-25 19:25:37,957 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 23 transitions. Word has length 12 [2020-10-25 19:25:37,958 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-25 19:25:37,958 INFO L481 AbstractCegarLoop]: Abstraction has 20 states and 23 transitions. [2020-10-25 19:25:37,958 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-25 19:25:37,958 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 23 transitions. [2020-10-25 19:25:37,959 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-10-25 19:25:37,959 INFO L414 BasicCegarLoop]: Found error trace [2020-10-25 19:25:37,960 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-25 19:25:37,960 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-25 19:25:37,960 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-25 19:25:37,961 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-25 19:25:37,962 INFO L82 PathProgramCache]: Analyzing trace with hash -2142875084, now seen corresponding path program 1 times [2020-10-25 19:25:37,962 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-25 19:25:37,963 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [481875189] [2020-10-25 19:25:37,963 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-25 19:25:38,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-25 19:25:38,054 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-25 19:25:38,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-25 19:25:38,136 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-25 19:25:38,171 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-25 19:25:38,171 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-25 19:25:38,172 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-25 19:25:38,212 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.10 07:25:38 BoogieIcfgContainer [2020-10-25 19:25:38,212 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-25 19:25:38,213 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-10-25 19:25:38,214 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-10-25 19:25:38,214 INFO L275 PluginConnector]: Witness Printer initialized [2020-10-25 19:25:38,215 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.10 07:25:37" (3/4) ... [2020-10-25 19:25:38,217 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2020-10-25 19:25:38,299 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2020-10-25 19:25:38,300 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-10-25 19:25:38,303 INFO L168 Benchmark]: Toolchain (without parser) took 2092.92 ms. Allocated memory was 50.3 MB in the beginning and 60.8 MB in the end (delta: 10.5 MB). Free memory was 27.0 MB in the beginning and 24.8 MB in the end (delta: 2.1 MB). Peak memory consumption was 14.1 MB. Max. memory is 16.1 GB. [2020-10-25 19:25:38,304 INFO L168 Benchmark]: CDTParser took 0.34 ms. Allocated memory is still 35.7 MB. Free memory was 19.9 MB in the beginning and 19.9 MB in the end (delta: 26.2 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-10-25 19:25:38,305 INFO L168 Benchmark]: CACSL2BoogieTranslator took 320.30 ms. Allocated memory is still 50.3 MB. Free memory was 26.3 MB in the beginning and 27.8 MB in the end (delta: -1.5 MB). Peak memory consumption was 3.4 MB. Max. memory is 16.1 GB. [2020-10-25 19:25:38,306 INFO L168 Benchmark]: Boogie Procedure Inliner took 47.90 ms. Allocated memory is still 50.3 MB. Free memory was 27.8 MB in the beginning and 26.2 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-10-25 19:25:38,312 INFO L168 Benchmark]: Boogie Preprocessor took 31.66 ms. Allocated memory is still 50.3 MB. Free memory was 26.2 MB in the beginning and 25.0 MB in the end (delta: 1.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-10-25 19:25:38,315 INFO L168 Benchmark]: RCFGBuilder took 547.42 ms. Allocated memory is still 50.3 MB. Free memory was 24.9 MB in the beginning and 22.1 MB in the end (delta: 2.8 MB). Peak memory consumption was 5.4 MB. Max. memory is 16.1 GB. [2020-10-25 19:25:38,316 INFO L168 Benchmark]: TraceAbstraction took 1032.10 ms. Allocated memory is still 60.8 MB. Free memory was 44.1 MB in the beginning and 27.2 MB in the end (delta: 17.0 MB). Peak memory consumption was 15.4 MB. Max. memory is 16.1 GB. [2020-10-25 19:25:38,317 INFO L168 Benchmark]: Witness Printer took 87.05 ms. Allocated memory is still 60.8 MB. Free memory was 27.2 MB in the beginning and 24.8 MB in the end (delta: 2.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-10-25 19:25:38,322 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.34 ms. Allocated memory is still 35.7 MB. Free memory was 19.9 MB in the beginning and 19.9 MB in the end (delta: 26.2 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 320.30 ms. Allocated memory is still 50.3 MB. Free memory was 26.3 MB in the beginning and 27.8 MB in the end (delta: -1.5 MB). Peak memory consumption was 3.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 47.90 ms. Allocated memory is still 50.3 MB. Free memory was 27.8 MB in the beginning and 26.2 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 31.66 ms. Allocated memory is still 50.3 MB. Free memory was 26.2 MB in the beginning and 25.0 MB in the end (delta: 1.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 547.42 ms. Allocated memory is still 50.3 MB. Free memory was 24.9 MB in the beginning and 22.1 MB in the end (delta: 2.8 MB). Peak memory consumption was 5.4 MB. Max. memory is 16.1 GB. * TraceAbstraction took 1032.10 ms. Allocated memory is still 60.8 MB. Free memory was 44.1 MB in the beginning and 27.2 MB in the end (delta: 17.0 MB). Peak memory consumption was 15.4 MB. Max. memory is 16.1 GB. * Witness Printer took 87.05 ms. Allocated memory is still 60.8 MB. Free memory was 27.2 MB in the beginning and 24.8 MB in the end (delta: 2.3 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] int *a = malloc(sizeof(int)*N); [L30] i = 0 VAL [N=1] [L30] COND TRUE i < N [L32] a[i] = 0 VAL [N=1] [L30] i++ VAL [N=1] [L30] COND FALSE !(i < N) VAL [N=1] [L35] i = 0 VAL [N=1] [L35] COND TRUE i < N VAL [N=1] [L37] COND TRUE N%2 == 1 [L39] EXPR a[i] [L39] a[i] = a[i] + 2 [L35] i++ VAL [N=1] [L35] COND FALSE !(i < N) VAL [N=1] [L47] i = 0 VAL [N=1] [L47] COND TRUE i < N [L49] a[i] [L15] COND TRUE !(cond) VAL [N=1] [L10] __assert_fail("0", "condmf.c", 10, "reach_error") VAL [N=1] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 23 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 0.9s, OverallIterations: 3, TraceHistogramMax: 1, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 36 SDtfs, 35 SDslu, 5 SDs, 0 SdLazy, 24 SolverSat, 6 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 6 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=23occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 2 MinimizatonAttempts, 9 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 41 NumberOfCodeBlocks, 41 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 22 ConstructedInterpolants, 0 QuantifiedInterpolants, 352 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 2 InterpolantComputations, 2 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...