./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/array-fpi/ss2f.c --full-output -ea --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 8bd4bc60 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx12G -Xms1G -ea -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/ss2f.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 2f79f94ccf50e0f6e94aeba64f48edd2c56bcf3e .............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. 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 0.1.25-8bd4bc6 [2020-07-28 14:57:37,044 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-28 14:57:37,045 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-28 14:57:37,057 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-28 14:57:37,057 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-28 14:57:37,059 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-28 14:57:37,060 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-28 14:57:37,062 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-28 14:57:37,064 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-28 14:57:37,065 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-28 14:57:37,066 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-28 14:57:37,067 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-28 14:57:37,068 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-28 14:57:37,069 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-28 14:57:37,070 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-28 14:57:37,071 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-28 14:57:37,072 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-28 14:57:37,073 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-28 14:57:37,075 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-28 14:57:37,078 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-28 14:57:37,080 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-28 14:57:37,081 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-28 14:57:37,083 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-28 14:57:37,084 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-28 14:57:37,087 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-07-28 14:57:37,087 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-07-28 14:57:37,088 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-07-28 14:57:37,089 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-07-28 14:57:37,089 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-07-28 14:57:37,090 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-07-28 14:57:37,091 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-07-28 14:57:37,092 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-07-28 14:57:37,093 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-07-28 14:57:37,094 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-07-28 14:57:37,095 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-07-28 14:57:37,095 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-07-28 14:57:37,096 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-07-28 14:57:37,096 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-07-28 14:57:37,097 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-28 14:57:37,098 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-28 14:57:37,099 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-28 14:57:37,100 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2020-07-28 14:57:37,116 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-28 14:57:37,116 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-28 14:57:37,117 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-28 14:57:37,118 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-28 14:57:37,118 INFO L138 SettingsManager]: * Use SBE=true [2020-07-28 14:57:37,118 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-28 14:57:37,119 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-28 14:57:37,119 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-28 14:57:37,119 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-28 14:57:37,119 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-28 14:57:37,120 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-28 14:57:37,120 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-28 14:57:37,120 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-28 14:57:37,121 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-28 14:57:37,121 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-28 14:57:37,121 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-28 14:57:37,121 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-28 14:57:37,122 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-28 14:57:37,122 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-28 14:57:37,122 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-28 14:57:37,123 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-28 14:57:37,123 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-28 14:57:37,123 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-28 14:57:37,124 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-07-28 14:57:37,124 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-07-28 14:57:37,124 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-07-28 14:57:37,124 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-28 14:57:37,125 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-28 14:57:37,125 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-07-28 14:57:37,125 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 -> 2f79f94ccf50e0f6e94aeba64f48edd2c56bcf3e [2020-07-28 14:57:37,434 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-28 14:57:37,447 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-28 14:57:37,451 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-28 14:57:37,452 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-28 14:57:37,453 INFO L275 PluginConnector]: CDTParser initialized [2020-07-28 14:57:37,453 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/array-fpi/ss2f.c [2020-07-28 14:57:37,510 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9823e5483/68ad530a7acc4213825853f63cbf3879/FLAG55d6e328b [2020-07-28 14:57:37,907 INFO L306 CDTParser]: Found 1 translation units. [2020-07-28 14:57:37,907 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-fpi/ss2f.c [2020-07-28 14:57:37,914 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9823e5483/68ad530a7acc4213825853f63cbf3879/FLAG55d6e328b [2020-07-28 14:57:38,277 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9823e5483/68ad530a7acc4213825853f63cbf3879 [2020-07-28 14:57:38,280 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-28 14:57:38,283 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-07-28 14:57:38,287 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-28 14:57:38,287 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-28 14:57:38,291 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-28 14:57:38,293 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.07 02:57:38" (1/1) ... [2020-07-28 14:57:38,296 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4f8f01c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 02:57:38, skipping insertion in model container [2020-07-28 14:57:38,296 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.07 02:57:38" (1/1) ... [2020-07-28 14:57:38,304 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-28 14:57:38,328 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-28 14:57:38,528 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-28 14:57:38,542 INFO L203 MainTranslator]: Completed pre-run [2020-07-28 14:57:38,576 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-28 14:57:38,595 INFO L208 MainTranslator]: Completed translation [2020-07-28 14:57:38,595 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 02:57:38 WrapperNode [2020-07-28 14:57:38,596 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-28 14:57:38,597 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-07-28 14:57:38,597 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-07-28 14:57:38,597 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-07-28 14:57:38,607 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 02:57:38" (1/1) ... [2020-07-28 14:57:38,618 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 02:57:38" (1/1) ... [2020-07-28 14:57:38,733 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-07-28 14:57:38,734 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-28 14:57:38,735 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-28 14:57:38,735 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-28 14:57:38,746 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 02:57:38" (1/1) ... [2020-07-28 14:57:38,747 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 02:57:38" (1/1) ... [2020-07-28 14:57:38,753 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 02:57:38" (1/1) ... [2020-07-28 14:57:38,753 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 02:57:38" (1/1) ... [2020-07-28 14:57:38,782 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 02:57:38" (1/1) ... [2020-07-28 14:57:38,793 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 02:57:38" (1/1) ... [2020-07-28 14:57:38,800 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 02:57:38" (1/1) ... [2020-07-28 14:57:38,805 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-28 14:57:38,806 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-28 14:57:38,807 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-28 14:57:38,807 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-28 14:57:38,808 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 02:57:38" (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 [2020-07-28 14:57:38,897 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-07-28 14:57:38,898 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-07-28 14:57:38,898 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-07-28 14:57:38,899 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-28 14:57:38,899 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-28 14:57:38,900 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-07-28 14:57:38,900 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-07-28 14:57:39,571 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-28 14:57:39,571 INFO L295 CfgBuilder]: Removed 15 assume(true) statements. [2020-07-28 14:57:39,576 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.07 02:57:39 BoogieIcfgContainer [2020-07-28 14:57:39,576 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-28 14:57:39,578 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-28 14:57:39,578 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-28 14:57:39,581 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-28 14:57:39,582 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.07 02:57:38" (1/3) ... [2020-07-28 14:57:39,583 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@204e07bb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.07 02:57:39, skipping insertion in model container [2020-07-28 14:57:39,583 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 02:57:38" (2/3) ... [2020-07-28 14:57:39,584 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@204e07bb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.07 02:57:39, skipping insertion in model container [2020-07-28 14:57:39,584 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.07 02:57:39" (3/3) ... [2020-07-28 14:57:39,586 INFO L109 eAbstractionObserver]: Analyzing ICFG ss2f.c [2020-07-28 14:57:39,597 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-07-28 14:57:39,606 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-28 14:57:39,621 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-28 14:57:39,645 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-28 14:57:39,646 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-28 14:57:39,646 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-07-28 14:57:39,646 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-28 14:57:39,646 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-28 14:57:39,646 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-28 14:57:39,647 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-28 14:57:39,647 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-28 14:57:39,664 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states. [2020-07-28 14:57:39,671 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-07-28 14:57:39,671 INFO L414 BasicCegarLoop]: Found error trace [2020-07-28 14:57:39,672 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] [2020-07-28 14:57:39,673 INFO L427 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-28 14:57:39,679 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-28 14:57:39,680 INFO L82 PathProgramCache]: Analyzing trace with hash -642180410, now seen corresponding path program 1 times [2020-07-28 14:57:39,691 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-28 14:57:39,692 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [544521159] [2020-07-28 14:57:39,692 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-28 14:57:39,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-28 14:57:39,848 INFO L280 TraceCheckUtils]: 0: Hoare triple {36#true} #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;~N~0 := 0; {36#true} is VALID [2020-07-28 14:57:39,848 INFO L280 TraceCheckUtils]: 1: Hoare triple {36#true} havoc main_#res;havoc main_#t~nondet0, main_#t~malloc1.base, main_#t~malloc1.offset, main_#t~post2, main_#t~mem4, main_#t~mem5, main_#t~post3, main_#t~post6, main_#t~mem8, main_#t~mem9, main_#t~post7, main_#t~mem11, main_#t~mem12, main_#t~post10, main_#t~mem14, main_#t~mem15, main_#t~post13, main_#t~mem17, main_#t~post16, main_~i~0, main_~#sum~0.base, main_~#sum~0.offset, main_~a~0.base, main_~a~0.offset;assume -2147483648 <= main_#t~nondet0 && main_#t~nondet0 <= 2147483647;~N~0 := main_#t~nondet0;havoc main_#t~nondet0; {36#true} is VALID [2020-07-28 14:57:39,849 INFO L280 TraceCheckUtils]: 2: Hoare triple {36#true} assume !(~N~0 <= 0);assume_abort_if_not_#in~cond := (if ~N~0 <= 536870911 then 1 else 0);havoc assume_abort_if_not_~cond;assume_abort_if_not_~cond := assume_abort_if_not_#in~cond; {36#true} is VALID [2020-07-28 14:57:39,851 INFO L280 TraceCheckUtils]: 3: Hoare triple {36#true} assume 0 == assume_abort_if_not_~cond;assume false; {37#false} is VALID [2020-07-28 14:57:39,851 INFO L280 TraceCheckUtils]: 4: Hoare triple {37#false} havoc main_~i~0;call main_~#sum~0.base, main_~#sum~0.offset := #Ultimate.allocOnStack(8);call main_#t~malloc1.base, main_#t~malloc1.offset := #Ultimate.allocOnHeap(8 * ~N~0);main_~a~0.base, main_~a~0.offset := main_#t~malloc1.base, main_#t~malloc1.offset;call write~int(0, main_~#sum~0.base, main_~#sum~0.offset, 8);main_~i~0 := 0; {37#false} is VALID [2020-07-28 14:57:39,852 INFO L280 TraceCheckUtils]: 5: Hoare triple {37#false} assume !(main_~i~0 < ~N~0); {37#false} is VALID [2020-07-28 14:57:39,852 INFO L280 TraceCheckUtils]: 6: Hoare triple {37#false} main_~i~0 := 0; {37#false} is VALID [2020-07-28 14:57:39,852 INFO L280 TraceCheckUtils]: 7: Hoare triple {37#false} assume !(main_~i~0 < ~N~0); {37#false} is VALID [2020-07-28 14:57:39,853 INFO L280 TraceCheckUtils]: 8: Hoare triple {37#false} main_~i~0 := 0; {37#false} is VALID [2020-07-28 14:57:39,853 INFO L280 TraceCheckUtils]: 9: Hoare triple {37#false} assume !(main_~i~0 < ~N~0); {37#false} is VALID [2020-07-28 14:57:39,853 INFO L280 TraceCheckUtils]: 10: Hoare triple {37#false} main_~i~0 := 0; {37#false} is VALID [2020-07-28 14:57:39,854 INFO L280 TraceCheckUtils]: 11: Hoare triple {37#false} assume !true; {37#false} is VALID [2020-07-28 14:57:39,854 INFO L280 TraceCheckUtils]: 12: Hoare triple {37#false} main_~i~0 := 0; {37#false} is VALID [2020-07-28 14:57:39,854 INFO L280 TraceCheckUtils]: 13: Hoare triple {37#false} assume !true; {37#false} is VALID [2020-07-28 14:57:39,855 INFO L280 TraceCheckUtils]: 14: Hoare triple {37#false} main_~i~0 := 0; {37#false} is VALID [2020-07-28 14:57:39,856 INFO L280 TraceCheckUtils]: 15: Hoare triple {37#false} assume !true; {37#false} is VALID [2020-07-28 14:57:39,856 INFO L280 TraceCheckUtils]: 16: Hoare triple {37#false} main_~i~0 := 0; {37#false} is VALID [2020-07-28 14:57:39,857 INFO L280 TraceCheckUtils]: 17: Hoare triple {37#false} assume !!(main_~i~0 < ~N~0);call main_#t~mem17 := read~int(main_~a~0.base, main_~a~0.offset + 8 * main_~i~0, 8);__VERIFIER_assert_#in~cond := (if main_#t~mem17 == ~N~0 * (2 + ~N~0) then 1 else 0);havoc __VERIFIER_assert_~cond;__VERIFIER_assert_~cond := __VERIFIER_assert_#in~cond; {37#false} is VALID [2020-07-28 14:57:39,857 INFO L280 TraceCheckUtils]: 18: Hoare triple {37#false} assume 0 == __VERIFIER_assert_~cond; {37#false} is VALID [2020-07-28 14:57:39,857 INFO L280 TraceCheckUtils]: 19: Hoare triple {37#false} assume !false; {37#false} is VALID [2020-07-28 14:57:39,861 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-28 14:57:39,862 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [544521159] [2020-07-28 14:57:39,864 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-28 14:57:39,864 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-07-28 14:57:39,865 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [59178042] [2020-07-28 14:57:39,872 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 20 [2020-07-28 14:57:39,874 INFO L84 Accepts]: Finished accepts. word is accepted. [2020-07-28 14:57:39,879 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 2 states. [2020-07-28 14:57:39,917 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 20 edges. 20 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2020-07-28 14:57:39,917 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-07-28 14:57:39,918 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-28 14:57:39,927 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-07-28 14:57:39,928 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-07-28 14:57:39,931 INFO L87 Difference]: Start difference. First operand 33 states. Second operand 2 states. [2020-07-28 14:57:40,014 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-28 14:57:40,015 INFO L93 Difference]: Finished difference Result 62 states and 92 transitions. [2020-07-28 14:57:40,015 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-07-28 14:57:40,016 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 20 [2020-07-28 14:57:40,016 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-28 14:57:40,017 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2020-07-28 14:57:40,027 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 92 transitions. [2020-07-28 14:57:40,027 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2020-07-28 14:57:40,031 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 92 transitions. [2020-07-28 14:57:40,032 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 2 states and 92 transitions. [2020-07-28 14:57:40,183 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 92 edges. 92 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2020-07-28 14:57:40,196 INFO L225 Difference]: With dead ends: 62 [2020-07-28 14:57:40,196 INFO L226 Difference]: Without dead ends: 29 [2020-07-28 14:57:40,200 INFO L675 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 [2020-07-28 14:57:40,221 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2020-07-28 14:57:40,242 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2020-07-28 14:57:40,242 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2020-07-28 14:57:40,243 INFO L82 GeneralOperation]: Start isEquivalent. First operand 29 states. Second operand 29 states. [2020-07-28 14:57:40,243 INFO L74 IsIncluded]: Start isIncluded. First operand 29 states. Second operand 29 states. [2020-07-28 14:57:40,244 INFO L87 Difference]: Start difference. First operand 29 states. Second operand 29 states. [2020-07-28 14:57:40,247 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-28 14:57:40,248 INFO L93 Difference]: Finished difference Result 29 states and 35 transitions. [2020-07-28 14:57:40,248 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 35 transitions. [2020-07-28 14:57:40,248 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-28 14:57:40,249 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2020-07-28 14:57:40,249 INFO L74 IsIncluded]: Start isIncluded. First operand 29 states. Second operand 29 states. [2020-07-28 14:57:40,249 INFO L87 Difference]: Start difference. First operand 29 states. Second operand 29 states. [2020-07-28 14:57:40,252 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-28 14:57:40,252 INFO L93 Difference]: Finished difference Result 29 states and 35 transitions. [2020-07-28 14:57:40,252 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 35 transitions. [2020-07-28 14:57:40,253 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-28 14:57:40,253 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2020-07-28 14:57:40,253 INFO L88 GeneralOperation]: Finished isEquivalent. [2020-07-28 14:57:40,254 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2020-07-28 14:57:40,254 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2020-07-28 14:57:40,256 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 35 transitions. [2020-07-28 14:57:40,258 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 35 transitions. Word has length 20 [2020-07-28 14:57:40,258 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-28 14:57:40,259 INFO L479 AbstractCegarLoop]: Abstraction has 29 states and 35 transitions. [2020-07-28 14:57:40,259 INFO L480 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-07-28 14:57:40,259 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 35 transitions. [2020-07-28 14:57:40,260 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-07-28 14:57:40,260 INFO L414 BasicCegarLoop]: Found error trace [2020-07-28 14:57:40,260 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] [2020-07-28 14:57:40,261 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-07-28 14:57:40,261 INFO L427 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-28 14:57:40,261 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-28 14:57:40,261 INFO L82 PathProgramCache]: Analyzing trace with hash -1011332042, now seen corresponding path program 1 times [2020-07-28 14:57:40,262 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-28 14:57:40,262 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [901263971] [2020-07-28 14:57:40,262 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-28 14:57:40,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-28 14:57:40,378 INFO L280 TraceCheckUtils]: 0: Hoare triple {212#true} #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;~N~0 := 0; {212#true} is VALID [2020-07-28 14:57:40,379 INFO L280 TraceCheckUtils]: 1: Hoare triple {212#true} havoc main_#res;havoc main_#t~nondet0, main_#t~malloc1.base, main_#t~malloc1.offset, main_#t~post2, main_#t~mem4, main_#t~mem5, main_#t~post3, main_#t~post6, main_#t~mem8, main_#t~mem9, main_#t~post7, main_#t~mem11, main_#t~mem12, main_#t~post10, main_#t~mem14, main_#t~mem15, main_#t~post13, main_#t~mem17, main_#t~post16, main_~i~0, main_~#sum~0.base, main_~#sum~0.offset, main_~a~0.base, main_~a~0.offset;assume -2147483648 <= main_#t~nondet0 && main_#t~nondet0 <= 2147483647;~N~0 := main_#t~nondet0;havoc main_#t~nondet0; {212#true} is VALID [2020-07-28 14:57:40,381 INFO L280 TraceCheckUtils]: 2: Hoare triple {212#true} assume !(~N~0 <= 0);assume_abort_if_not_#in~cond := (if ~N~0 <= 536870911 then 1 else 0);havoc assume_abort_if_not_~cond;assume_abort_if_not_~cond := assume_abort_if_not_#in~cond; {214#(<= 1 ~N~0)} is VALID [2020-07-28 14:57:40,383 INFO L280 TraceCheckUtils]: 3: Hoare triple {214#(<= 1 ~N~0)} assume !(0 == assume_abort_if_not_~cond); {214#(<= 1 ~N~0)} is VALID [2020-07-28 14:57:40,386 INFO L280 TraceCheckUtils]: 4: Hoare triple {214#(<= 1 ~N~0)} havoc main_~i~0;call main_~#sum~0.base, main_~#sum~0.offset := #Ultimate.allocOnStack(8);call main_#t~malloc1.base, main_#t~malloc1.offset := #Ultimate.allocOnHeap(8 * ~N~0);main_~a~0.base, main_~a~0.offset := main_#t~malloc1.base, main_#t~malloc1.offset;call write~int(0, main_~#sum~0.base, main_~#sum~0.offset, 8);main_~i~0 := 0; {215#(and (= 0 ULTIMATE.start_main_~i~0) (<= 1 ~N~0))} is VALID [2020-07-28 14:57:40,387 INFO L280 TraceCheckUtils]: 5: Hoare triple {215#(and (= 0 ULTIMATE.start_main_~i~0) (<= 1 ~N~0))} assume !(main_~i~0 < ~N~0); {213#false} is VALID [2020-07-28 14:57:40,388 INFO L280 TraceCheckUtils]: 6: Hoare triple {213#false} main_~i~0 := 0; {213#false} is VALID [2020-07-28 14:57:40,388 INFO L280 TraceCheckUtils]: 7: Hoare triple {213#false} assume !(main_~i~0 < ~N~0); {213#false} is VALID [2020-07-28 14:57:40,389 INFO L280 TraceCheckUtils]: 8: Hoare triple {213#false} main_~i~0 := 0; {213#false} is VALID [2020-07-28 14:57:40,389 INFO L280 TraceCheckUtils]: 9: Hoare triple {213#false} assume !(main_~i~0 < ~N~0); {213#false} is VALID [2020-07-28 14:57:40,391 INFO L280 TraceCheckUtils]: 10: Hoare triple {213#false} main_~i~0 := 0; {213#false} is VALID [2020-07-28 14:57:40,391 INFO L280 TraceCheckUtils]: 11: Hoare triple {213#false} assume !(main_~i~0 < ~N~0); {213#false} is VALID [2020-07-28 14:57:40,392 INFO L280 TraceCheckUtils]: 12: Hoare triple {213#false} main_~i~0 := 0; {213#false} is VALID [2020-07-28 14:57:40,392 INFO L280 TraceCheckUtils]: 13: Hoare triple {213#false} assume !(main_~i~0 < ~N~0); {213#false} is VALID [2020-07-28 14:57:40,392 INFO L280 TraceCheckUtils]: 14: Hoare triple {213#false} main_~i~0 := 0; {213#false} is VALID [2020-07-28 14:57:40,393 INFO L280 TraceCheckUtils]: 15: Hoare triple {213#false} assume !(main_~i~0 < ~N~0); {213#false} is VALID [2020-07-28 14:57:40,393 INFO L280 TraceCheckUtils]: 16: Hoare triple {213#false} main_~i~0 := 0; {213#false} is VALID [2020-07-28 14:57:40,393 INFO L280 TraceCheckUtils]: 17: Hoare triple {213#false} assume !!(main_~i~0 < ~N~0);call main_#t~mem17 := read~int(main_~a~0.base, main_~a~0.offset + 8 * main_~i~0, 8);__VERIFIER_assert_#in~cond := (if main_#t~mem17 == ~N~0 * (2 + ~N~0) then 1 else 0);havoc __VERIFIER_assert_~cond;__VERIFIER_assert_~cond := __VERIFIER_assert_#in~cond; {213#false} is VALID [2020-07-28 14:57:40,394 INFO L280 TraceCheckUtils]: 18: Hoare triple {213#false} assume 0 == __VERIFIER_assert_~cond; {213#false} is VALID [2020-07-28 14:57:40,394 INFO L280 TraceCheckUtils]: 19: Hoare triple {213#false} assume !false; {213#false} is VALID [2020-07-28 14:57:40,397 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-28 14:57:40,398 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [901263971] [2020-07-28 14:57:40,398 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-28 14:57:40,398 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-07-28 14:57:40,399 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1269714765] [2020-07-28 14:57:40,401 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 20 [2020-07-28 14:57:40,402 INFO L84 Accepts]: Finished accepts. word is accepted. [2020-07-28 14:57:40,402 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 4 states. [2020-07-28 14:57:40,437 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 20 edges. 20 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2020-07-28 14:57:40,438 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-07-28 14:57:40,438 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-28 14:57:40,438 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-07-28 14:57:40,439 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-07-28 14:57:40,439 INFO L87 Difference]: Start difference. First operand 29 states and 35 transitions. Second operand 4 states. [2020-07-28 14:57:40,743 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-28 14:57:40,745 INFO L93 Difference]: Finished difference Result 69 states and 86 transitions. [2020-07-28 14:57:40,745 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-07-28 14:57:40,745 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 20 [2020-07-28 14:57:40,746 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-28 14:57:40,746 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2020-07-28 14:57:40,750 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 86 transitions. [2020-07-28 14:57:40,751 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2020-07-28 14:57:40,757 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 86 transitions. [2020-07-28 14:57:40,757 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 4 states and 86 transitions. [2020-07-28 14:57:40,903 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 86 edges. 86 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2020-07-28 14:57:40,906 INFO L225 Difference]: With dead ends: 69 [2020-07-28 14:57:40,906 INFO L226 Difference]: Without dead ends: 47 [2020-07-28 14:57:40,908 INFO L675 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 [2020-07-28 14:57:40,909 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2020-07-28 14:57:40,952 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 35. [2020-07-28 14:57:40,952 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2020-07-28 14:57:40,953 INFO L82 GeneralOperation]: Start isEquivalent. First operand 47 states. Second operand 35 states. [2020-07-28 14:57:40,953 INFO L74 IsIncluded]: Start isIncluded. First operand 47 states. Second operand 35 states. [2020-07-28 14:57:40,954 INFO L87 Difference]: Start difference. First operand 47 states. Second operand 35 states. [2020-07-28 14:57:40,958 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-28 14:57:40,959 INFO L93 Difference]: Finished difference Result 47 states and 53 transitions. [2020-07-28 14:57:40,959 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 53 transitions. [2020-07-28 14:57:40,961 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-28 14:57:40,962 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2020-07-28 14:57:40,962 INFO L74 IsIncluded]: Start isIncluded. First operand 35 states. Second operand 47 states. [2020-07-28 14:57:40,963 INFO L87 Difference]: Start difference. First operand 35 states. Second operand 47 states. [2020-07-28 14:57:40,973 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-28 14:57:40,974 INFO L93 Difference]: Finished difference Result 47 states and 53 transitions. [2020-07-28 14:57:40,975 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 53 transitions. [2020-07-28 14:57:40,976 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-28 14:57:40,976 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2020-07-28 14:57:40,977 INFO L88 GeneralOperation]: Finished isEquivalent. [2020-07-28 14:57:40,977 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2020-07-28 14:57:40,977 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2020-07-28 14:57:40,982 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 41 transitions. [2020-07-28 14:57:40,982 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 41 transitions. Word has length 20 [2020-07-28 14:57:40,982 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-28 14:57:40,983 INFO L479 AbstractCegarLoop]: Abstraction has 35 states and 41 transitions. [2020-07-28 14:57:40,984 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-07-28 14:57:40,985 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 41 transitions. [2020-07-28 14:57:40,987 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2020-07-28 14:57:40,988 INFO L414 BasicCegarLoop]: Found error trace [2020-07-28 14:57:40,988 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, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-28 14:57:40,988 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-07-28 14:57:40,989 INFO L427 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-28 14:57:40,989 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-28 14:57:40,990 INFO L82 PathProgramCache]: Analyzing trace with hash 1890076394, now seen corresponding path program 1 times [2020-07-28 14:57:40,990 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-28 14:57:40,991 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1552917238] [2020-07-28 14:57:40,992 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-28 14:57:41,083 ERROR L271 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-07-28 14:57:41,083 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2020834359] [2020-07-28 14:57:41,084 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 [2020-07-28 14:57:41,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-28 14:57:41,155 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-07-28 14:57:41,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-28 14:57:41,186 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-07-28 14:57:41,224 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-07-28 14:57:41,224 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-07-28 14:57:41,439 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2020-07-28 14:57:41,544 WARN L170 areAnnotationChecker]: ULTIMATE.startENTRY has no Hoare annotation [2020-07-28 14:57:41,544 WARN L170 areAnnotationChecker]: L-1 has no Hoare annotation [2020-07-28 14:57:41,545 WARN L170 areAnnotationChecker]: L22 has no Hoare annotation [2020-07-28 14:57:41,545 WARN L170 areAnnotationChecker]: L22 has no Hoare annotation [2020-07-28 14:57:41,545 WARN L170 areAnnotationChecker]: L64 has no Hoare annotation [2020-07-28 14:57:41,545 WARN L170 areAnnotationChecker]: L11 has no Hoare annotation [2020-07-28 14:57:41,545 WARN L170 areAnnotationChecker]: L11 has no Hoare annotation [2020-07-28 14:57:41,546 WARN L170 areAnnotationChecker]: ULTIMATE.startFINAL has no Hoare annotation [2020-07-28 14:57:41,546 WARN L170 areAnnotationChecker]: L10 has no Hoare annotation [2020-07-28 14:57:41,546 WARN L170 areAnnotationChecker]: L30-3 has no Hoare annotation [2020-07-28 14:57:41,546 WARN L170 areAnnotationChecker]: L30-3 has no Hoare annotation [2020-07-28 14:57:41,546 WARN L170 areAnnotationChecker]: L30-3 has no Hoare annotation [2020-07-28 14:57:41,546 WARN L170 areAnnotationChecker]: L30-4 has no Hoare annotation [2020-07-28 14:57:41,547 WARN L170 areAnnotationChecker]: L30-2 has no Hoare annotation [2020-07-28 14:57:41,547 WARN L170 areAnnotationChecker]: L35-3 has no Hoare annotation [2020-07-28 14:57:41,547 WARN L170 areAnnotationChecker]: L35-3 has no Hoare annotation [2020-07-28 14:57:41,549 WARN L170 areAnnotationChecker]: L35-3 has no Hoare annotation [2020-07-28 14:57:41,549 WARN L170 areAnnotationChecker]: L35-4 has no Hoare annotation [2020-07-28 14:57:41,550 WARN L170 areAnnotationChecker]: L35-2 has no Hoare annotation [2020-07-28 14:57:41,550 WARN L170 areAnnotationChecker]: L40-3 has no Hoare annotation [2020-07-28 14:57:41,550 WARN L170 areAnnotationChecker]: L40-3 has no Hoare annotation [2020-07-28 14:57:41,550 WARN L170 areAnnotationChecker]: L40-3 has no Hoare annotation [2020-07-28 14:57:41,551 WARN L170 areAnnotationChecker]: L40-4 has no Hoare annotation [2020-07-28 14:57:41,551 WARN L170 areAnnotationChecker]: L40-2 has no Hoare annotation [2020-07-28 14:57:41,551 WARN L170 areAnnotationChecker]: L45-3 has no Hoare annotation [2020-07-28 14:57:41,552 WARN L170 areAnnotationChecker]: L45-3 has no Hoare annotation [2020-07-28 14:57:41,552 WARN L170 areAnnotationChecker]: L45-3 has no Hoare annotation [2020-07-28 14:57:41,554 WARN L170 areAnnotationChecker]: L45-4 has no Hoare annotation [2020-07-28 14:57:41,554 WARN L170 areAnnotationChecker]: L45-2 has no Hoare annotation [2020-07-28 14:57:41,556 WARN L170 areAnnotationChecker]: L50-3 has no Hoare annotation [2020-07-28 14:57:41,556 WARN L170 areAnnotationChecker]: L50-3 has no Hoare annotation [2020-07-28 14:57:41,557 WARN L170 areAnnotationChecker]: L50-3 has no Hoare annotation [2020-07-28 14:57:41,557 WARN L170 areAnnotationChecker]: L50-4 has no Hoare annotation [2020-07-28 14:57:41,557 WARN L170 areAnnotationChecker]: L50-2 has no Hoare annotation [2020-07-28 14:57:41,557 WARN L170 areAnnotationChecker]: L55-3 has no Hoare annotation [2020-07-28 14:57:41,557 WARN L170 areAnnotationChecker]: L55-3 has no Hoare annotation [2020-07-28 14:57:41,557 WARN L170 areAnnotationChecker]: L55-3 has no Hoare annotation [2020-07-28 14:57:41,558 WARN L170 areAnnotationChecker]: L55-4 has no Hoare annotation [2020-07-28 14:57:41,558 WARN L170 areAnnotationChecker]: L55-2 has no Hoare annotation [2020-07-28 14:57:41,558 WARN L170 areAnnotationChecker]: L60-3 has no Hoare annotation [2020-07-28 14:57:41,558 WARN L170 areAnnotationChecker]: L60-3 has no Hoare annotation [2020-07-28 14:57:41,558 WARN L170 areAnnotationChecker]: L60-3 has no Hoare annotation [2020-07-28 14:57:41,563 WARN L170 areAnnotationChecker]: L60-4 has no Hoare annotation [2020-07-28 14:57:41,564 WARN L170 areAnnotationChecker]: L13 has no Hoare annotation [2020-07-28 14:57:41,564 WARN L170 areAnnotationChecker]: L13 has no Hoare annotation [2020-07-28 14:57:41,564 WARN L170 areAnnotationChecker]: L13-1 has no Hoare annotation [2020-07-28 14:57:41,564 WARN L170 areAnnotationChecker]: L13-1 has no Hoare annotation [2020-07-28 14:57:41,564 WARN L170 areAnnotationChecker]: L13-3 has no Hoare annotation [2020-07-28 14:57:41,564 WARN L170 areAnnotationChecker]: L60-2 has no Hoare annotation [2020-07-28 14:57:41,565 INFO L163 areAnnotationChecker]: CFG has 0 edges. 0 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. 0 times interpolants missing. [2020-07-28 14:57:41,570 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.07 02:57:41 BoogieIcfgContainer [2020-07-28 14:57:41,571 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-28 14:57:41,572 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-07-28 14:57:41,573 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-07-28 14:57:41,573 INFO L275 PluginConnector]: Witness Printer initialized [2020-07-28 14:57:41,574 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.07 02:57:39" (3/4) ... [2020-07-28 14:57:41,577 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2020-07-28 14:57:41,701 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2020-07-28 14:57:41,701 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-07-28 14:57:41,705 INFO L168 Benchmark]: Toolchain (without parser) took 3422.66 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 136.3 MB). Free memory was 950.8 MB in the beginning and 940.3 MB in the end (delta: 10.6 MB). Peak memory consumption was 146.9 MB. Max. memory is 11.5 GB. [2020-07-28 14:57:41,705 INFO L168 Benchmark]: CDTParser took 0.31 ms. Allocated memory is still 1.0 GB. Free memory is still 981.7 MB. There was no memory consumed. Max. memory is 11.5 GB. [2020-07-28 14:57:41,706 INFO L168 Benchmark]: CACSL2BoogieTranslator took 309.26 ms. Allocated memory is still 1.0 GB. Free memory was 950.8 MB in the beginning and 934.7 MB in the end (delta: 16.1 MB). Peak memory consumption was 16.1 MB. Max. memory is 11.5 GB. [2020-07-28 14:57:41,707 INFO L168 Benchmark]: Boogie Procedure Inliner took 137.38 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 136.3 MB). Free memory was 934.7 MB in the beginning and 1.1 GB in the end (delta: -191.3 MB). Peak memory consumption was 9.8 MB. Max. memory is 11.5 GB. [2020-07-28 14:57:41,707 INFO L168 Benchmark]: Boogie Preprocessor took 71.53 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2020-07-28 14:57:41,707 INFO L168 Benchmark]: RCFGBuilder took 770.12 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: 32.7 MB). Peak memory consumption was 32.7 MB. Max. memory is 11.5 GB. [2020-07-28 14:57:41,708 INFO L168 Benchmark]: TraceAbstraction took 1993.15 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 946.9 MB in the end (delta: 146.4 MB). Peak memory consumption was 146.4 MB. Max. memory is 11.5 GB. [2020-07-28 14:57:41,709 INFO L168 Benchmark]: Witness Printer took 128.94 ms. Allocated memory is still 1.2 GB. Free memory was 946.9 MB in the beginning and 940.3 MB in the end (delta: 6.6 MB). Peak memory consumption was 6.6 MB. Max. memory is 11.5 GB. [2020-07-28 14:57:41,712 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - AssertionsEnabledResult: Assertions are enabled Assertions are enabled - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.31 ms. Allocated memory is still 1.0 GB. Free memory is still 981.7 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 309.26 ms. Allocated memory is still 1.0 GB. Free memory was 950.8 MB in the beginning and 934.7 MB in the end (delta: 16.1 MB). Peak memory consumption was 16.1 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 137.38 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 136.3 MB). Free memory was 934.7 MB in the beginning and 1.1 GB in the end (delta: -191.3 MB). Peak memory consumption was 9.8 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 71.53 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 770.12 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: 32.7 MB). Peak memory consumption was 32.7 MB. Max. memory is 11.5 GB. * TraceAbstraction took 1993.15 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 946.9 MB in the end (delta: 146.4 MB). Peak memory consumption was 146.4 MB. Max. memory is 11.5 GB. * Witness Printer took 128.94 ms. Allocated memory is still 1.2 GB. Free memory was 946.9 MB in the beginning and 940.3 MB 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: 13]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L17] int N; VAL [N=0] [L21] N = __VERIFIER_nondet_int() [L22] COND FALSE !(N <= 0) [L11] COND FALSE !(!cond) VAL [N=1] [L25] int i; [L26] long long sum[1]; [L27] long long *a = malloc(sizeof(long long)*N); [L29] sum[0] = 0 [L30] i=0 VAL [N=1] [L30] COND TRUE i