./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/array-fpi/condmf.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/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(__VERIFIER_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash a173bca0cab6c18c76b290a63d5b90f186b30a0c ............................................................................................................................................................................................................................................................................................................................................................................................................................................................ 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 14:49:26,690 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-28 14:49:26,693 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-28 14:49:26,712 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-28 14:49:26,712 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-28 14:49:26,715 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-28 14:49:26,717 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-28 14:49:26,729 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-28 14:49:26,732 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-28 14:49:26,733 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-28 14:49:26,734 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-28 14:49:26,737 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-28 14:49:26,737 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-28 14:49:26,742 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-28 14:49:26,744 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-28 14:49:26,745 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-28 14:49:26,746 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-28 14:49:26,747 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-28 14:49:26,749 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-28 14:49:26,750 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-28 14:49:26,752 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-28 14:49:26,753 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-28 14:49:26,755 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-28 14:49:26,756 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-28 14:49:26,758 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-07-28 14:49:26,759 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-07-28 14:49:26,759 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-07-28 14:49:26,760 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-07-28 14:49:26,761 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-07-28 14:49:26,762 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-07-28 14:49:26,762 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-07-28 14:49:26,763 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-07-28 14:49:26,764 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-07-28 14:49:26,765 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-07-28 14:49:26,766 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-07-28 14:49:26,766 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-07-28 14:49:26,767 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-07-28 14:49:26,767 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-07-28 14:49:26,768 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-28 14:49:26,769 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-28 14:49:26,770 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-28 14:49:26,771 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2020-07-28 14:49:26,786 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-28 14:49:26,786 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-28 14:49:26,788 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-28 14:49:26,788 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-28 14:49:26,788 INFO L138 SettingsManager]: * Use SBE=true [2020-07-28 14:49:26,789 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-28 14:49:26,789 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-28 14:49:26,789 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-28 14:49:26,789 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-28 14:49:26,790 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-28 14:49:26,790 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-28 14:49:26,790 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-28 14:49:26,791 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-28 14:49:26,791 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-28 14:49:26,791 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-28 14:49:26,791 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-28 14:49:26,792 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-28 14:49:26,792 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-28 14:49:26,792 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-28 14:49:26,793 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-28 14:49:26,793 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-28 14:49:26,793 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-28 14:49:26,794 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-28 14:49:26,794 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-07-28 14:49:26,794 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-07-28 14:49:26,794 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-07-28 14:49:26,795 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-28 14:49:26,795 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-28 14:49:26,795 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-07-28 14:49:26,796 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 -> a173bca0cab6c18c76b290a63d5b90f186b30a0c [2020-07-28 14:49:27,117 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-28 14:49:27,139 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-28 14:49:27,143 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-28 14:49:27,145 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-28 14:49:27,147 INFO L275 PluginConnector]: CDTParser initialized [2020-07-28 14:49:27,148 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/array-fpi/condmf.c [2020-07-28 14:49:27,216 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e3553dcea/5c27681f323e45599f3d2fefccae16a0/FLAGb4efa8591 [2020-07-28 14:49:27,641 INFO L306 CDTParser]: Found 1 translation units. [2020-07-28 14:49:27,642 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-fpi/condmf.c [2020-07-28 14:49:27,649 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e3553dcea/5c27681f323e45599f3d2fefccae16a0/FLAGb4efa8591 [2020-07-28 14:49:28,072 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e3553dcea/5c27681f323e45599f3d2fefccae16a0 [2020-07-28 14:49:28,076 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-28 14:49:28,079 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-07-28 14:49:28,080 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-28 14:49:28,081 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-28 14:49:28,084 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-28 14:49:28,086 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.07 02:49:28" (1/1) ... [2020-07-28 14:49:28,089 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@382a4e76 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 02:49:28, skipping insertion in model container [2020-07-28 14:49:28,090 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.07 02:49:28" (1/1) ... [2020-07-28 14:49:28,098 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-28 14:49:28,118 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-28 14:49:28,324 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-28 14:49:28,340 INFO L203 MainTranslator]: Completed pre-run [2020-07-28 14:49:28,383 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-28 14:49:28,407 INFO L208 MainTranslator]: Completed translation [2020-07-28 14:49:28,408 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 02:49:28 WrapperNode [2020-07-28 14:49:28,409 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-28 14:49:28,411 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-07-28 14:49:28,411 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-07-28 14:49:28,411 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-07-28 14:49:28,519 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 02:49:28" (1/1) ... [2020-07-28 14:49:28,533 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 02:49:28" (1/1) ... [2020-07-28 14:49:28,580 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-07-28 14:49:28,581 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-28 14:49:28,581 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-28 14:49:28,581 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-28 14:49:28,592 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 02:49:28" (1/1) ... [2020-07-28 14:49:28,593 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 02:49:28" (1/1) ... [2020-07-28 14:49:28,604 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 02:49:28" (1/1) ... [2020-07-28 14:49:28,605 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 02:49:28" (1/1) ... [2020-07-28 14:49:28,611 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 02:49:28" (1/1) ... [2020-07-28 14:49:28,616 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 02:49:28" (1/1) ... [2020-07-28 14:49:28,618 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 02:49:28" (1/1) ... [2020-07-28 14:49:28,621 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-28 14:49:28,621 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-28 14:49:28,622 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-28 14:49:28,622 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-28 14:49:28,623 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 02:49:28" (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 14:49:28,695 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-07-28 14:49:28,696 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-07-28 14:49:28,696 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-28 14:49:28,696 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-28 14:49:28,696 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-07-28 14:49:29,099 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-28 14:49:29,099 INFO L295 CfgBuilder]: Removed 11 assume(true) statements. [2020-07-28 14:49:29,105 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.07 02:49:29 BoogieIcfgContainer [2020-07-28 14:49:29,106 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-28 14:49:29,107 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-28 14:49:29,107 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-28 14:49:29,110 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-28 14:49:29,112 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.07 02:49:28" (1/3) ... [2020-07-28 14:49:29,113 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1ad7fa64 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.07 02:49:29, skipping insertion in model container [2020-07-28 14:49:29,114 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 02:49:28" (2/3) ... [2020-07-28 14:49:29,114 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1ad7fa64 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.07 02:49:29, skipping insertion in model container [2020-07-28 14:49:29,114 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.07 02:49:29" (3/3) ... [2020-07-28 14:49:29,116 INFO L109 eAbstractionObserver]: Analyzing ICFG condmf.c [2020-07-28 14:49:29,126 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-07-28 14:49:29,134 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-28 14:49:29,149 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-28 14:49:29,175 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-28 14:49:29,176 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-28 14:49:29,176 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-07-28 14:49:29,176 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-28 14:49:29,176 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-28 14:49:29,177 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-28 14:49:29,177 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-28 14:49:29,177 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-28 14:49:29,195 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states. [2020-07-28 14:49:29,201 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-07-28 14:49:29,202 INFO L414 BasicCegarLoop]: Found error trace [2020-07-28 14:49:29,203 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-28 14:49:29,204 INFO L427 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-28 14:49:29,210 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-28 14:49:29,211 INFO L82 PathProgramCache]: Analyzing trace with hash -1828392228, now seen corresponding path program 1 times [2020-07-28 14:49:29,222 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-28 14:49:29,223 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1512390016] [2020-07-28 14:49:29,223 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-28 14:49:29,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-28 14:49:29,385 INFO L280 TraceCheckUtils]: 0: Hoare triple {25#true} #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;~N~0 := 0; {25#true} is VALID [2020-07-28 14:49:29,386 INFO L280 TraceCheckUtils]: 1: Hoare triple {25#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~mem7, main_#t~post6, main_~i~0, 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; {25#true} is VALID [2020-07-28 14:49:29,387 INFO L280 TraceCheckUtils]: 2: Hoare triple {25#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; {25#true} is VALID [2020-07-28 14:49:29,388 INFO L280 TraceCheckUtils]: 3: Hoare triple {25#true} assume 0 == assume_abort_if_not_~cond;assume false; {26#false} is VALID [2020-07-28 14:49:29,388 INFO L280 TraceCheckUtils]: 4: Hoare triple {26#false} havoc main_~i~0;call main_#t~malloc1.base, main_#t~malloc1.offset := #Ultimate.allocOnHeap(4 * ~N~0);main_~a~0.base, main_~a~0.offset := main_#t~malloc1.base, main_#t~malloc1.offset;main_~i~0 := 0; {26#false} is VALID [2020-07-28 14:49:29,389 INFO L280 TraceCheckUtils]: 5: Hoare triple {26#false} assume !(main_~i~0 < ~N~0); {26#false} is VALID [2020-07-28 14:49:29,389 INFO L280 TraceCheckUtils]: 6: Hoare triple {26#false} main_~i~0 := 0; {26#false} is VALID [2020-07-28 14:49:29,389 INFO L280 TraceCheckUtils]: 7: Hoare triple {26#false} assume !(main_~i~0 < ~N~0); {26#false} is VALID [2020-07-28 14:49:29,390 INFO L280 TraceCheckUtils]: 8: Hoare triple {26#false} main_~i~0 := 0; {26#false} is VALID [2020-07-28 14:49:29,390 INFO L280 TraceCheckUtils]: 9: Hoare triple {26#false} assume !!(main_~i~0 < ~N~0);call main_#t~mem7 := read~int(main_~a~0.base, main_~a~0.offset + 4 * main_~i~0, 4);__VERIFIER_assert_#in~cond := (if (if main_#t~mem7 < 0 && 0 != main_#t~mem7 % 2 then main_#t~mem7 % 2 - 2 else main_#t~mem7 % 2) == (if ~N~0 < 0 && 0 != ~N~0 % 2 then ~N~0 % 2 - 2 else ~N~0 % 2) then 1 else 0);havoc __VERIFIER_assert_~cond;__VERIFIER_assert_~cond := __VERIFIER_assert_#in~cond; {26#false} is VALID [2020-07-28 14:49:29,391 INFO L280 TraceCheckUtils]: 10: Hoare triple {26#false} assume 0 == __VERIFIER_assert_~cond; {26#false} is VALID [2020-07-28 14:49:29,391 INFO L280 TraceCheckUtils]: 11: Hoare triple {26#false} assume !false; {26#false} is VALID [2020-07-28 14:49:29,394 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 14:49:29,395 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1512390016] [2020-07-28 14:49:29,396 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-28 14:49:29,397 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-07-28 14:49:29,398 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [640402510] [2020-07-28 14:49:29,404 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 12 [2020-07-28 14:49:29,406 INFO L84 Accepts]: Finished accepts. word is accepted. [2020-07-28 14:49:29,410 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 2 states. [2020-07-28 14:49:29,443 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 12 edges. 12 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2020-07-28 14:49:29,443 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-07-28 14:49:29,444 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-28 14:49:29,453 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-07-28 14:49:29,454 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-07-28 14:49:29,456 INFO L87 Difference]: Start difference. First operand 22 states. Second operand 2 states. [2020-07-28 14:49:29,520 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-28 14:49:29,520 INFO L93 Difference]: Finished difference Result 40 states and 56 transitions. [2020-07-28 14:49:29,521 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-07-28 14:49:29,521 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 12 [2020-07-28 14:49:29,522 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-28 14:49:29,523 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2020-07-28 14:49:29,532 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 56 transitions. [2020-07-28 14:49:29,532 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2020-07-28 14:49:29,536 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 56 transitions. [2020-07-28 14:49:29,536 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 2 states and 56 transitions. [2020-07-28 14:49:29,679 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 56 edges. 56 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2020-07-28 14:49:29,695 INFO L225 Difference]: With dead ends: 40 [2020-07-28 14:49:29,695 INFO L226 Difference]: Without dead ends: 18 [2020-07-28 14:49:29,702 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 14:49:29,723 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2020-07-28 14:49:29,743 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2020-07-28 14:49:29,744 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2020-07-28 14:49:29,744 INFO L82 GeneralOperation]: Start isEquivalent. First operand 18 states. Second operand 18 states. [2020-07-28 14:49:29,745 INFO L74 IsIncluded]: Start isIncluded. First operand 18 states. Second operand 18 states. [2020-07-28 14:49:29,745 INFO L87 Difference]: Start difference. First operand 18 states. Second operand 18 states. [2020-07-28 14:49:29,749 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-28 14:49:29,750 INFO L93 Difference]: Finished difference Result 18 states and 21 transitions. [2020-07-28 14:49:29,750 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 21 transitions. [2020-07-28 14:49:29,751 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-28 14:49:29,752 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2020-07-28 14:49:29,752 INFO L74 IsIncluded]: Start isIncluded. First operand 18 states. Second operand 18 states. [2020-07-28 14:49:29,752 INFO L87 Difference]: Start difference. First operand 18 states. Second operand 18 states. [2020-07-28 14:49:29,758 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-28 14:49:29,764 INFO L93 Difference]: Finished difference Result 18 states and 21 transitions. [2020-07-28 14:49:29,765 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 21 transitions. [2020-07-28 14:49:29,765 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-28 14:49:29,766 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2020-07-28 14:49:29,767 INFO L88 GeneralOperation]: Finished isEquivalent. [2020-07-28 14:49:29,767 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2020-07-28 14:49:29,768 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2020-07-28 14:49:29,769 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 21 transitions. [2020-07-28 14:49:29,772 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 21 transitions. Word has length 12 [2020-07-28 14:49:29,772 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-28 14:49:29,772 INFO L479 AbstractCegarLoop]: Abstraction has 18 states and 21 transitions. [2020-07-28 14:49:29,772 INFO L480 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-07-28 14:49:29,773 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 21 transitions. [2020-07-28 14:49:29,773 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-07-28 14:49:29,774 INFO L414 BasicCegarLoop]: Found error trace [2020-07-28 14:49:29,774 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-28 14:49:29,775 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-07-28 14:49:29,775 INFO L427 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-28 14:49:29,776 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-28 14:49:29,776 INFO L82 PathProgramCache]: Analyzing trace with hash -1148333858, now seen corresponding path program 1 times [2020-07-28 14:49:29,777 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-28 14:49:29,778 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1770400364] [2020-07-28 14:49:29,779 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-28 14:49:29,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-28 14:49:29,888 INFO L280 TraceCheckUtils]: 0: Hoare triple {134#true} #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;~N~0 := 0; {134#true} is VALID [2020-07-28 14:49:29,889 INFO L280 TraceCheckUtils]: 1: Hoare triple {134#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~mem7, main_#t~post6, main_~i~0, 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; {134#true} is VALID [2020-07-28 14:49:29,890 INFO L280 TraceCheckUtils]: 2: Hoare triple {134#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; {136#(<= 1 ~N~0)} is VALID [2020-07-28 14:49:29,891 INFO L280 TraceCheckUtils]: 3: Hoare triple {136#(<= 1 ~N~0)} assume !(0 == assume_abort_if_not_~cond); {136#(<= 1 ~N~0)} is VALID [2020-07-28 14:49:29,893 INFO L280 TraceCheckUtils]: 4: Hoare triple {136#(<= 1 ~N~0)} havoc main_~i~0;call main_#t~malloc1.base, main_#t~malloc1.offset := #Ultimate.allocOnHeap(4 * ~N~0);main_~a~0.base, main_~a~0.offset := main_#t~malloc1.base, main_#t~malloc1.offset;main_~i~0 := 0; {137#(and (= 0 ULTIMATE.start_main_~i~0) (<= 1 ~N~0))} is VALID [2020-07-28 14:49:29,894 INFO L280 TraceCheckUtils]: 5: Hoare triple {137#(and (= 0 ULTIMATE.start_main_~i~0) (<= 1 ~N~0))} assume !(main_~i~0 < ~N~0); {135#false} is VALID [2020-07-28 14:49:29,895 INFO L280 TraceCheckUtils]: 6: Hoare triple {135#false} main_~i~0 := 0; {135#false} is VALID [2020-07-28 14:49:29,895 INFO L280 TraceCheckUtils]: 7: Hoare triple {135#false} assume !(main_~i~0 < ~N~0); {135#false} is VALID [2020-07-28 14:49:29,895 INFO L280 TraceCheckUtils]: 8: Hoare triple {135#false} main_~i~0 := 0; {135#false} is VALID [2020-07-28 14:49:29,896 INFO L280 TraceCheckUtils]: 9: Hoare triple {135#false} assume !!(main_~i~0 < ~N~0);call main_#t~mem7 := read~int(main_~a~0.base, main_~a~0.offset + 4 * main_~i~0, 4);__VERIFIER_assert_#in~cond := (if (if main_#t~mem7 < 0 && 0 != main_#t~mem7 % 2 then main_#t~mem7 % 2 - 2 else main_#t~mem7 % 2) == (if ~N~0 < 0 && 0 != ~N~0 % 2 then ~N~0 % 2 - 2 else ~N~0 % 2) then 1 else 0);havoc __VERIFIER_assert_~cond;__VERIFIER_assert_~cond := __VERIFIER_assert_#in~cond; {135#false} is VALID [2020-07-28 14:49:29,896 INFO L280 TraceCheckUtils]: 10: Hoare triple {135#false} assume 0 == __VERIFIER_assert_~cond; {135#false} is VALID [2020-07-28 14:49:29,896 INFO L280 TraceCheckUtils]: 11: Hoare triple {135#false} assume !false; {135#false} is VALID [2020-07-28 14:49:29,898 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 14:49:29,898 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1770400364] [2020-07-28 14:49:29,898 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-28 14:49:29,898 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-07-28 14:49:29,899 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [344524975] [2020-07-28 14:49:29,901 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 12 [2020-07-28 14:49:29,901 INFO L84 Accepts]: Finished accepts. word is accepted. [2020-07-28 14:49:29,901 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 4 states. [2020-07-28 14:49:29,922 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 12 edges. 12 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2020-07-28 14:49:29,922 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-07-28 14:49:29,923 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-28 14:49:29,923 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-07-28 14:49:29,924 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-07-28 14:49:29,924 INFO L87 Difference]: Start difference. First operand 18 states and 21 transitions. Second operand 4 states. [2020-07-28 14:49:30,090 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-28 14:49:30,090 INFO L93 Difference]: Finished difference Result 40 states and 48 transitions. [2020-07-28 14:49:30,091 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-07-28 14:49:30,091 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 12 [2020-07-28 14:49:30,091 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-28 14:49:30,091 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2020-07-28 14:49:30,094 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 48 transitions. [2020-07-28 14:49:30,094 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2020-07-28 14:49:30,096 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 48 transitions. [2020-07-28 14:49:30,096 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 4 states and 48 transitions. [2020-07-28 14:49:30,171 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 48 edges. 48 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2020-07-28 14:49:30,173 INFO L225 Difference]: With dead ends: 40 [2020-07-28 14:49:30,173 INFO L226 Difference]: Without dead ends: 29 [2020-07-28 14:49:30,174 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 14:49:30,175 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2020-07-28 14:49:30,191 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 20. [2020-07-28 14:49:30,191 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2020-07-28 14:49:30,191 INFO L82 GeneralOperation]: Start isEquivalent. First operand 29 states. Second operand 20 states. [2020-07-28 14:49:30,192 INFO L74 IsIncluded]: Start isIncluded. First operand 29 states. Second operand 20 states. [2020-07-28 14:49:30,192 INFO L87 Difference]: Start difference. First operand 29 states. Second operand 20 states. [2020-07-28 14:49:30,196 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-28 14:49:30,197 INFO L93 Difference]: Finished difference Result 29 states and 33 transitions. [2020-07-28 14:49:30,197 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 33 transitions. [2020-07-28 14:49:30,197 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-28 14:49:30,198 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2020-07-28 14:49:30,198 INFO L74 IsIncluded]: Start isIncluded. First operand 20 states. Second operand 29 states. [2020-07-28 14:49:30,198 INFO L87 Difference]: Start difference. First operand 20 states. Second operand 29 states. [2020-07-28 14:49:30,201 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-28 14:49:30,202 INFO L93 Difference]: Finished difference Result 29 states and 33 transitions. [2020-07-28 14:49:30,202 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 33 transitions. [2020-07-28 14:49:30,203 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-28 14:49:30,203 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2020-07-28 14:49:30,203 INFO L88 GeneralOperation]: Finished isEquivalent. [2020-07-28 14:49:30,203 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2020-07-28 14:49:30,204 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2020-07-28 14:49:30,207 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 23 transitions. [2020-07-28 14:49:30,208 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 23 transitions. Word has length 12 [2020-07-28 14:49:30,208 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-28 14:49:30,208 INFO L479 AbstractCegarLoop]: Abstraction has 20 states and 23 transitions. [2020-07-28 14:49:30,208 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-07-28 14:49:30,208 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 23 transitions. [2020-07-28 14:49:30,209 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-07-28 14:49:30,209 INFO L414 BasicCegarLoop]: Found error trace [2020-07-28 14:49:30,209 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-28 14:49:30,210 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-07-28 14:49:30,210 INFO L427 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-28 14:49:30,210 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-28 14:49:30,210 INFO L82 PathProgramCache]: Analyzing trace with hash -2142875084, now seen corresponding path program 1 times [2020-07-28 14:49:30,211 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-28 14:49:30,211 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [422858042] [2020-07-28 14:49:30,211 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-28 14:49:30,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-28 14:49:30,295 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-07-28 14:49:30,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-28 14:49:30,355 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-07-28 14:49:30,388 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-07-28 14:49:30,388 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-07-28 14:49:30,389 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-07-28 14:49:30,426 WARN L170 areAnnotationChecker]: ULTIMATE.startENTRY has no Hoare annotation [2020-07-28 14:49:30,426 WARN L170 areAnnotationChecker]: L-1 has no Hoare annotation [2020-07-28 14:49:30,426 WARN L170 areAnnotationChecker]: L22 has no Hoare annotation [2020-07-28 14:49:30,427 WARN L170 areAnnotationChecker]: L22 has no Hoare annotation [2020-07-28 14:49:30,427 WARN L170 areAnnotationChecker]: L49 has no Hoare annotation [2020-07-28 14:49:30,427 WARN L170 areAnnotationChecker]: L11 has no Hoare annotation [2020-07-28 14:49:30,427 WARN L170 areAnnotationChecker]: L11 has no Hoare annotation [2020-07-28 14:49:30,428 WARN L170 areAnnotationChecker]: ULTIMATE.startFINAL has no Hoare annotation [2020-07-28 14:49:30,428 WARN L170 areAnnotationChecker]: L10 has no Hoare annotation [2020-07-28 14:49:30,428 WARN L170 areAnnotationChecker]: L28-3 has no Hoare annotation [2020-07-28 14:49:30,428 WARN L170 areAnnotationChecker]: L28-3 has no Hoare annotation [2020-07-28 14:49:30,428 WARN L170 areAnnotationChecker]: L28-3 has no Hoare annotation [2020-07-28 14:49:30,429 WARN L170 areAnnotationChecker]: L28-4 has no Hoare annotation [2020-07-28 14:49:30,429 WARN L170 areAnnotationChecker]: L28-2 has no Hoare annotation [2020-07-28 14:49:30,429 WARN L170 areAnnotationChecker]: L33-3 has no Hoare annotation [2020-07-28 14:49:30,429 WARN L170 areAnnotationChecker]: L33-3 has no Hoare annotation [2020-07-28 14:49:30,430 WARN L170 areAnnotationChecker]: L33-3 has no Hoare annotation [2020-07-28 14:49:30,430 WARN L170 areAnnotationChecker]: L33-4 has no Hoare annotation [2020-07-28 14:49:30,430 WARN L170 areAnnotationChecker]: L35 has no Hoare annotation [2020-07-28 14:49:30,430 WARN L170 areAnnotationChecker]: L35 has no Hoare annotation [2020-07-28 14:49:30,430 WARN L170 areAnnotationChecker]: L45-3 has no Hoare annotation [2020-07-28 14:49:30,431 WARN L170 areAnnotationChecker]: L45-3 has no Hoare annotation [2020-07-28 14:49:30,431 WARN L170 areAnnotationChecker]: L45-3 has no Hoare annotation [2020-07-28 14:49:30,431 WARN L170 areAnnotationChecker]: L33-2 has no Hoare annotation [2020-07-28 14:49:30,431 WARN L170 areAnnotationChecker]: L45-4 has no Hoare annotation [2020-07-28 14:49:30,431 WARN L170 areAnnotationChecker]: L13 has no Hoare annotation [2020-07-28 14:49:30,432 WARN L170 areAnnotationChecker]: L13 has no Hoare annotation [2020-07-28 14:49:30,432 WARN L170 areAnnotationChecker]: L13-1 has no Hoare annotation [2020-07-28 14:49:30,432 WARN L170 areAnnotationChecker]: L13-1 has no Hoare annotation [2020-07-28 14:49:30,432 WARN L170 areAnnotationChecker]: L13-3 has no Hoare annotation [2020-07-28 14:49:30,432 WARN L170 areAnnotationChecker]: L45-2 has no Hoare annotation [2020-07-28 14:49:30,433 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 14:49:30,435 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.07 02:49:30 BoogieIcfgContainer [2020-07-28 14:49:30,436 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-28 14:49:30,436 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-07-28 14:49:30,436 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-07-28 14:49:30,437 INFO L275 PluginConnector]: Witness Printer initialized [2020-07-28 14:49:30,438 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.07 02:49:29" (3/4) ... [2020-07-28 14:49:30,440 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2020-07-28 14:49:30,508 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2020-07-28 14:49:30,508 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-07-28 14:49:30,512 INFO L168 Benchmark]: Toolchain (without parser) took 2433.79 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 143.7 MB). Free memory was 950.8 MB in the beginning and 1.0 GB in the end (delta: -55.0 MB). Peak memory consumption was 88.6 MB. Max. memory is 11.5 GB. [2020-07-28 14:49:30,513 INFO L168 Benchmark]: CDTParser took 0.86 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 14:49:30,513 INFO L168 Benchmark]: CACSL2BoogieTranslator took 328.75 ms. Allocated memory is still 1.0 GB. Free memory was 950.8 MB in the beginning and 940.1 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2020-07-28 14:49:30,514 INFO L168 Benchmark]: Boogie Procedure Inliner took 169.64 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 143.7 MB). Free memory was 940.1 MB in the beginning and 1.1 GB in the end (delta: -192.9 MB). Peak memory consumption was 9.6 MB. Max. memory is 11.5 GB. [2020-07-28 14:49:30,515 INFO L168 Benchmark]: Boogie Preprocessor took 40.31 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 14:49:30,515 INFO L168 Benchmark]: RCFGBuilder took 484.29 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: 25.0 MB). Peak memory consumption was 25.0 MB. Max. memory is 11.5 GB. [2020-07-28 14:49:30,516 INFO L168 Benchmark]: TraceAbstraction took 1328.94 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 95.3 MB). Peak memory consumption was 95.3 MB. Max. memory is 11.5 GB. [2020-07-28 14:49:30,517 INFO L168 Benchmark]: Witness Printer took 72.41 ms. Allocated memory is still 1.2 GB. Free memory was 1.0 GB in the beginning and 1.0 GB in the end (delta: 6.8 MB). Peak memory consumption was 6.8 MB. Max. memory is 11.5 GB. [2020-07-28 14:49:30,520 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 0.86 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 328.75 ms. Allocated memory is still 1.0 GB. Free memory was 950.8 MB in the beginning and 940.1 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 169.64 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 143.7 MB). Free memory was 940.1 MB in the beginning and 1.1 GB in the end (delta: -192.9 MB). Peak memory consumption was 9.6 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 40.31 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 484.29 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: 25.0 MB). Peak memory consumption was 25.0 MB. Max. memory is 11.5 GB. * TraceAbstraction took 1328.94 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 95.3 MB). Peak memory consumption was 95.3 MB. Max. memory is 11.5 GB. * Witness Printer took 72.41 ms. Allocated memory is still 1.2 GB. Free memory was 1.0 GB in the beginning and 1.0 GB in the end (delta: 6.8 MB). Peak memory consumption was 6.8 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] int *a = malloc(sizeof(int)*N); [L28] i = 0 VAL [N=1] [L28] COND TRUE i < N [L30] a[i] = 0 VAL [N=1] [L28] i++ VAL [N=1] [L28] COND FALSE !(i < N) VAL [N=1] [L33] i = 0 VAL [N=1] [L33] COND TRUE i < N VAL [N=1] [L35] COND TRUE N%2 == 1 [L37] EXPR a[i] [L37] a[i] = a[i] + 2 [L33] i++ VAL [N=1] [L33] COND FALSE !(i < N) VAL [N=1] [L45] i = 0 VAL [N=1] [L45] COND TRUE i < N [L47] a[i] [L13] COND TRUE !(cond) VAL [N=1] [L13] __VERIFIER_error() VAL [N=1] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 22 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 1.2s, OverallIterations: 3, TraceHistogramMax: 1, AutomataDifference: 0.5s, 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=22occurred 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...