./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/loops/trex03-1.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 9a8b2e8d Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.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/loops/trex03-1.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 734dad1b540ff96271402e7042ab8251e149cda4 ........................................................................................................................................................................................................................................................................ 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 0.1.25-9a8b2e8 [2020-10-20 00:56:00,667 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-20 00:56:00,670 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-20 00:56:00,711 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-20 00:56:00,712 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-20 00:56:00,724 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-20 00:56:00,726 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-20 00:56:00,729 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-20 00:56:00,732 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-20 00:56:00,733 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-20 00:56:00,734 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-20 00:56:00,737 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-20 00:56:00,738 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-20 00:56:00,741 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-20 00:56:00,744 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-20 00:56:00,745 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-20 00:56:00,747 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-20 00:56:00,751 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-20 00:56:00,753 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-20 00:56:00,756 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-20 00:56:00,759 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-20 00:56:00,761 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-20 00:56:00,762 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-20 00:56:00,764 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-20 00:56:00,770 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-20 00:56:00,771 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-20 00:56:00,771 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-20 00:56:00,773 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-20 00:56:00,774 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-20 00:56:00,775 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-20 00:56:00,776 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-20 00:56:00,777 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-20 00:56:00,777 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-20 00:56:00,778 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-20 00:56:00,780 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-20 00:56:00,780 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-20 00:56:00,781 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-20 00:56:00,781 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-20 00:56:00,781 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-20 00:56:00,782 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-20 00:56:00,784 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-20 00:56:00,785 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-20 00:56:00,832 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-20 00:56:00,832 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-20 00:56:00,834 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-20 00:56:00,834 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-20 00:56:00,834 INFO L138 SettingsManager]: * Use SBE=true [2020-10-20 00:56:00,835 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-20 00:56:00,835 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-20 00:56:00,835 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-20 00:56:00,835 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-20 00:56:00,836 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-20 00:56:00,837 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-20 00:56:00,837 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-20 00:56:00,837 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-20 00:56:00,838 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-20 00:56:00,838 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-20 00:56:00,839 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-20 00:56:00,839 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-20 00:56:00,839 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-20 00:56:00,839 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-20 00:56:00,840 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-20 00:56:00,840 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-20 00:56:00,840 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-20 00:56:00,840 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-20 00:56:00,841 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-20 00:56:00,841 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-20 00:56:00,841 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-20 00:56:00,841 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-20 00:56:00,842 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-20 00:56:00,842 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-20 00:56:00,842 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(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 734dad1b540ff96271402e7042ab8251e149cda4 [2020-10-20 00:56:01,050 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-20 00:56:01,062 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-20 00:56:01,066 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-20 00:56:01,068 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-20 00:56:01,068 INFO L275 PluginConnector]: CDTParser initialized [2020-10-20 00:56:01,069 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/loops/trex03-1.c [2020-10-20 00:56:01,146 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4a9dfa57c/5cf81542d0324a7d936762b35d9bbe56/FLAG110c2909a [2020-10-20 00:56:01,678 INFO L306 CDTParser]: Found 1 translation units. [2020-10-20 00:56:01,679 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/loops/trex03-1.c [2020-10-20 00:56:01,685 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4a9dfa57c/5cf81542d0324a7d936762b35d9bbe56/FLAG110c2909a [2020-10-20 00:56:01,974 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4a9dfa57c/5cf81542d0324a7d936762b35d9bbe56 [2020-10-20 00:56:01,978 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-20 00:56:01,985 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-10-20 00:56:01,986 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-20 00:56:01,986 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-20 00:56:01,990 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-20 00:56:01,992 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.10 12:56:01" (1/1) ... [2020-10-20 00:56:01,995 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2385537b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:56:01, skipping insertion in model container [2020-10-20 00:56:01,996 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.10 12:56:01" (1/1) ... [2020-10-20 00:56:02,005 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-20 00:56:02,026 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-20 00:56:02,219 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-20 00:56:02,231 INFO L203 MainTranslator]: Completed pre-run [2020-10-20 00:56:02,261 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-20 00:56:02,278 INFO L208 MainTranslator]: Completed translation [2020-10-20 00:56:02,279 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:56:02 WrapperNode [2020-10-20 00:56:02,279 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-20 00:56:02,280 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-20 00:56:02,281 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-20 00:56:02,281 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-20 00:56:02,289 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:56:02" (1/1) ... [2020-10-20 00:56:02,297 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:56:02" (1/1) ... [2020-10-20 00:56:02,319 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-20 00:56:02,319 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-20 00:56:02,319 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-20 00:56:02,320 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-20 00:56:02,327 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:56:02" (1/1) ... [2020-10-20 00:56:02,327 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:56:02" (1/1) ... [2020-10-20 00:56:02,328 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:56:02" (1/1) ... [2020-10-20 00:56:02,329 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:56:02" (1/1) ... [2020-10-20 00:56:02,333 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:56:02" (1/1) ... [2020-10-20 00:56:02,337 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:56:02" (1/1) ... [2020-10-20 00:56:02,338 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:56:02" (1/1) ... [2020-10-20 00:56:02,340 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-20 00:56:02,341 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-20 00:56:02,341 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-20 00:56:02,341 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-20 00:56:02,342 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:56:02" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-20 00:56:02,404 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-20 00:56:02,404 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-20 00:56:02,404 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-20 00:56:02,405 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-20 00:56:02,644 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-20 00:56:02,644 INFO L298 CfgBuilder]: Removed 9 assume(true) statements. [2020-10-20 00:56:02,647 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 12:56:02 BoogieIcfgContainer [2020-10-20 00:56:02,647 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-20 00:56:02,648 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-20 00:56:02,649 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-20 00:56:02,652 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-20 00:56:02,653 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.10 12:56:01" (1/3) ... [2020-10-20 00:56:02,653 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2e4d0bc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.10 12:56:02, skipping insertion in model container [2020-10-20 00:56:02,654 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:56:02" (2/3) ... [2020-10-20 00:56:02,654 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2e4d0bc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.10 12:56:02, skipping insertion in model container [2020-10-20 00:56:02,655 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 12:56:02" (3/3) ... [2020-10-20 00:56:02,656 INFO L111 eAbstractionObserver]: Analyzing ICFG trex03-1.c [2020-10-20 00:56:02,669 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-20 00:56:02,679 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-20 00:56:02,722 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-20 00:56:02,782 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-20 00:56:02,784 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-20 00:56:02,784 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-20 00:56:02,784 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-20 00:56:02,784 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-20 00:56:02,784 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-20 00:56:02,785 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-20 00:56:02,785 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-20 00:56:02,799 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states. [2020-10-20 00:56:02,805 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2020-10-20 00:56:02,805 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 00:56:02,806 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2020-10-20 00:56:02,806 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-20 00:56:02,811 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 00:56:02,812 INFO L82 PathProgramCache]: Analyzing trace with hash 890122407, now seen corresponding path program 1 times [2020-10-20 00:56:02,820 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 00:56:02,820 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [953875907] [2020-10-20 00:56:02,820 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 00:56:02,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 00:56:02,958 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 00:56:02,959 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [953875907] [2020-10-20 00:56:02,960 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 00:56:02,960 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-20 00:56:02,962 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [921351365] [2020-10-20 00:56:02,967 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-10-20 00:56:02,967 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 00:56:02,981 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-10-20 00:56:02,982 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-10-20 00:56:02,984 INFO L87 Difference]: Start difference. First operand 15 states. Second operand 2 states. [2020-10-20 00:56:03,002 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 00:56:03,003 INFO L93 Difference]: Finished difference Result 23 states and 27 transitions. [2020-10-20 00:56:03,003 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-10-20 00:56:03,004 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 6 [2020-10-20 00:56:03,005 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 00:56:03,015 INFO L225 Difference]: With dead ends: 23 [2020-10-20 00:56:03,015 INFO L226 Difference]: Without dead ends: 10 [2020-10-20 00:56:03,018 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-10-20 00:56:03,045 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10 states. [2020-10-20 00:56:03,059 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10 to 10. [2020-10-20 00:56:03,061 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2020-10-20 00:56:03,061 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 12 transitions. [2020-10-20 00:56:03,063 INFO L78 Accepts]: Start accepts. Automaton has 10 states and 12 transitions. Word has length 6 [2020-10-20 00:56:03,063 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 00:56:03,063 INFO L481 AbstractCegarLoop]: Abstraction has 10 states and 12 transitions. [2020-10-20 00:56:03,064 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-10-20 00:56:03,064 INFO L276 IsEmpty]: Start isEmpty. Operand 10 states and 12 transitions. [2020-10-20 00:56:03,064 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2020-10-20 00:56:03,064 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 00:56:03,065 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2020-10-20 00:56:03,065 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-20 00:56:03,065 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-20 00:56:03,066 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 00:56:03,066 INFO L82 PathProgramCache]: Analyzing trace with hash 889645751, now seen corresponding path program 1 times [2020-10-20 00:56:03,066 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 00:56:03,066 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2102153768] [2020-10-20 00:56:03,067 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 00:56:03,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 00:56:03,127 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 00:56:03,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 00:56:03,187 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 00:56:03,224 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-20 00:56:03,224 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-20 00:56:03,227 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-20 00:56:03,267 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.10 12:56:03 BoogieIcfgContainer [2020-10-20 00:56:03,267 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-20 00:56:03,267 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-10-20 00:56:03,268 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-10-20 00:56:03,268 INFO L275 PluginConnector]: Witness Printer initialized [2020-10-20 00:56:03,269 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 12:56:02" (3/4) ... [2020-10-20 00:56:03,271 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2020-10-20 00:56:03,369 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2020-10-20 00:56:03,370 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-10-20 00:56:03,374 INFO L168 Benchmark]: Toolchain (without parser) took 1393.36 ms. Allocated memory was 41.4 MB in the beginning and 44.6 MB in the end (delta: 3.1 MB). Free memory was 22.4 MB in the beginning and 15.3 MB in the end (delta: 7.1 MB). Peak memory consumption was 10.2 MB. Max. memory is 14.3 GB. [2020-10-20 00:56:03,376 INFO L168 Benchmark]: CDTParser took 0.30 ms. Allocated memory is still 32.0 MB. Free memory was 10.9 MB in the beginning and 10.8 MB in the end (delta: 47.5 kB). Peak memory consumption was 47.5 kB. Max. memory is 14.3 GB. [2020-10-20 00:56:03,379 INFO L168 Benchmark]: CACSL2BoogieTranslator took 294.02 ms. Allocated memory was 41.4 MB in the beginning and 41.9 MB in the end (delta: 524.3 kB). Free memory was 21.6 MB in the beginning and 23.7 MB in the end (delta: -2.1 MB). Peak memory consumption was 12.9 MB. Max. memory is 14.3 GB. [2020-10-20 00:56:03,381 INFO L168 Benchmark]: Boogie Procedure Inliner took 38.55 ms. Allocated memory is still 41.9 MB. Free memory was 23.7 MB in the beginning and 22.0 MB in the end (delta: 1.7 MB). Peak memory consumption was 1.7 MB. Max. memory is 14.3 GB. [2020-10-20 00:56:03,382 INFO L168 Benchmark]: Boogie Preprocessor took 21.21 ms. Allocated memory is still 41.9 MB. Free memory was 22.0 MB in the beginning and 20.6 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.4 MB. Max. memory is 14.3 GB. [2020-10-20 00:56:03,383 INFO L168 Benchmark]: RCFGBuilder took 306.40 ms. Allocated memory was 41.9 MB in the beginning and 44.6 MB in the end (delta: 2.6 MB). Free memory was 20.6 MB in the beginning and 25.8 MB in the end (delta: -5.1 MB). Peak memory consumption was 11.4 MB. Max. memory is 14.3 GB. [2020-10-20 00:56:03,385 INFO L168 Benchmark]: TraceAbstraction took 618.78 ms. Allocated memory is still 44.6 MB. Free memory was 25.3 MB in the beginning and 17.3 MB in the end (delta: 7.9 MB). Peak memory consumption was 7.9 MB. Max. memory is 14.3 GB. [2020-10-20 00:56:03,386 INFO L168 Benchmark]: Witness Printer took 103.21 ms. Allocated memory is still 44.6 MB. Free memory was 17.3 MB in the beginning and 15.3 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 14.3 GB. [2020-10-20 00:56:03,399 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.30 ms. Allocated memory is still 32.0 MB. Free memory was 10.9 MB in the beginning and 10.8 MB in the end (delta: 47.5 kB). Peak memory consumption was 47.5 kB. Max. memory is 14.3 GB. * CACSL2BoogieTranslator took 294.02 ms. Allocated memory was 41.4 MB in the beginning and 41.9 MB in the end (delta: 524.3 kB). Free memory was 21.6 MB in the beginning and 23.7 MB in the end (delta: -2.1 MB). Peak memory consumption was 12.9 MB. Max. memory is 14.3 GB. * Boogie Procedure Inliner took 38.55 ms. Allocated memory is still 41.9 MB. Free memory was 23.7 MB in the beginning and 22.0 MB in the end (delta: 1.7 MB). Peak memory consumption was 1.7 MB. Max. memory is 14.3 GB. * Boogie Preprocessor took 21.21 ms. Allocated memory is still 41.9 MB. Free memory was 22.0 MB in the beginning and 20.6 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.4 MB. Max. memory is 14.3 GB. * RCFGBuilder took 306.40 ms. Allocated memory was 41.9 MB in the beginning and 44.6 MB in the end (delta: 2.6 MB). Free memory was 20.6 MB in the beginning and 25.8 MB in the end (delta: -5.1 MB). Peak memory consumption was 11.4 MB. Max. memory is 14.3 GB. * TraceAbstraction took 618.78 ms. Allocated memory is still 44.6 MB. Free memory was 25.3 MB in the beginning and 17.3 MB in the end (delta: 7.9 MB). Peak memory consumption was 7.9 MB. Max. memory is 14.3 GB. * Witness Printer took 103.21 ms. Allocated memory is still 44.6 MB. Free memory was 17.3 MB in the beginning and 15.3 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 14.3 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 3]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L17] unsigned int x1=__VERIFIER_nondet_uint(), x2=__VERIFIER_nondet_uint(), x3=__VERIFIER_nondet_uint(); [L17] unsigned int x1=__VERIFIER_nondet_uint(), x2=__VERIFIER_nondet_uint(), x3=__VERIFIER_nondet_uint(); [L17] unsigned int x1=__VERIFIER_nondet_uint(), x2=__VERIFIER_nondet_uint(), x3=__VERIFIER_nondet_uint(); [L18] unsigned int d1=1, d2=1, d3=1; [L19] _Bool c1=__VERIFIER_nondet_bool(), c2=__VERIFIER_nondet_bool(); [L19] _Bool c1=__VERIFIER_nondet_bool(), c2=__VERIFIER_nondet_bool(); [L21] COND FALSE !(x1>0 && x2>0 && x3>0) [L6] COND TRUE !(cond) [L3] __assert_fail("0", "trex03-1.c", 3, "reach_error") - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 15 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 0.4s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 16 SDtfs, 0 SDslu, 0 SDs, 0 SdLazy, 0 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=15occurred 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, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 12 NumberOfCodeBlocks, 12 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 5 ConstructedInterpolants, 0 QuantifiedInterpolants, 25 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 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...