./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/loops/terminator_02-1.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version f470102c Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx12G -Xms1G -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/terminator_02-1.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(__VERIFIER_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 373a42d768821561cf3a59e950efa4caf2842fe4 ............................................................................................................................................................................................................................................................... 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-f470102 [2019-11-28 17:04:03,999 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-28 17:04:04,001 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-28 17:04:04,019 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-28 17:04:04,020 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-28 17:04:04,022 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-28 17:04:04,024 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-28 17:04:04,034 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-28 17:04:04,039 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-28 17:04:04,043 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-28 17:04:04,044 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-28 17:04:04,046 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-28 17:04:04,046 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-28 17:04:04,050 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-28 17:04:04,051 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-28 17:04:04,053 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-28 17:04:04,054 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-28 17:04:04,055 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-28 17:04:04,059 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-28 17:04:04,063 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-28 17:04:04,067 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-28 17:04:04,072 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-28 17:04:04,073 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-28 17:04:04,075 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-28 17:04:04,080 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-28 17:04:04,080 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-28 17:04:04,081 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-28 17:04:04,082 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-28 17:04:04,083 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-28 17:04:04,084 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-28 17:04:04,084 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-28 17:04:04,085 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-28 17:04:04,086 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-28 17:04:04,087 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-28 17:04:04,088 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-28 17:04:04,089 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-28 17:04:04,090 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-28 17:04:04,090 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-28 17:04:04,090 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-28 17:04:04,091 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-28 17:04:04,093 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-28 17:04:04,094 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2019-11-28 17:04:04,125 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-28 17:04:04,128 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-28 17:04:04,131 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-28 17:04:04,133 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-28 17:04:04,133 INFO L138 SettingsManager]: * Use SBE=true [2019-11-28 17:04:04,133 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-28 17:04:04,134 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-28 17:04:04,134 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-28 17:04:04,134 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-28 17:04:04,135 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-28 17:04:04,136 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-28 17:04:04,136 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-28 17:04:04,136 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-28 17:04:04,137 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-28 17:04:04,137 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-28 17:04:04,137 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-28 17:04:04,137 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-28 17:04:04,138 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-28 17:04:04,138 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-28 17:04:04,138 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-28 17:04:04,139 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-28 17:04:04,139 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-28 17:04:04,139 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-28 17:04:04,140 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-28 17:04:04,140 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-28 17:04:04,140 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-28 17:04:04,141 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-28 17:04:04,141 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-28 17:04:04,142 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2019-11-28 17:04:04,142 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 -> 373a42d768821561cf3a59e950efa4caf2842fe4 [2019-11-28 17:04:04,437 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-28 17:04:04,450 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-28 17:04:04,453 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-28 17:04:04,455 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-28 17:04:04,455 INFO L275 PluginConnector]: CDTParser initialized [2019-11-28 17:04:04,456 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/loops/terminator_02-1.c [2019-11-28 17:04:04,529 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0f4f5d212/a4f6e60c0f3f4fa0bd259981e8eb9caf/FLAGbdd50e9d0 [2019-11-28 17:04:04,980 INFO L306 CDTParser]: Found 1 translation units. [2019-11-28 17:04:04,981 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/loops/terminator_02-1.c [2019-11-28 17:04:04,987 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0f4f5d212/a4f6e60c0f3f4fa0bd259981e8eb9caf/FLAGbdd50e9d0 [2019-11-28 17:04:05,405 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0f4f5d212/a4f6e60c0f3f4fa0bd259981e8eb9caf [2019-11-28 17:04:05,409 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-28 17:04:05,411 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-11-28 17:04:05,412 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-28 17:04:05,412 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-28 17:04:05,417 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-28 17:04:05,419 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 05:04:05" (1/1) ... [2019-11-28 17:04:05,422 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@79c8f58 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:04:05, skipping insertion in model container [2019-11-28 17:04:05,422 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 05:04:05" (1/1) ... [2019-11-28 17:04:05,430 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-11-28 17:04:05,450 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-11-28 17:04:05,674 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-28 17:04:05,678 INFO L203 MainTranslator]: Completed pre-run [2019-11-28 17:04:05,699 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-28 17:04:05,711 INFO L208 MainTranslator]: Completed translation [2019-11-28 17:04:05,711 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:04:05 WrapperNode [2019-11-28 17:04:05,711 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-28 17:04:05,712 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-28 17:04:05,712 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-28 17:04:05,712 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-28 17:04:05,720 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:04:05" (1/1) ... [2019-11-28 17:04:05,726 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:04:05" (1/1) ... [2019-11-28 17:04:05,803 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-28 17:04:05,804 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-28 17:04:05,804 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-28 17:04:05,804 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-28 17:04:05,814 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:04:05" (1/1) ... [2019-11-28 17:04:05,815 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:04:05" (1/1) ... [2019-11-28 17:04:05,816 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:04:05" (1/1) ... [2019-11-28 17:04:05,817 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:04:05" (1/1) ... [2019-11-28 17:04:05,819 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:04:05" (1/1) ... [2019-11-28 17:04:05,827 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:04:05" (1/1) ... [2019-11-28 17:04:05,828 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:04:05" (1/1) ... [2019-11-28 17:04:05,840 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-28 17:04:05,841 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-28 17:04:05,841 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-28 17:04:05,841 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-28 17:04:05,842 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:04:05" (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 [2019-11-28 17:04:05,911 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-28 17:04:05,912 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-28 17:04:06,096 INFO L282 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-28 17:04:06,097 INFO L287 CfgBuilder]: Removed 7 assume(true) statements. [2019-11-28 17:04:06,098 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 05:04:06 BoogieIcfgContainer [2019-11-28 17:04:06,098 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-28 17:04:06,099 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-28 17:04:06,100 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-28 17:04:06,103 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-28 17:04:06,103 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 05:04:05" (1/3) ... [2019-11-28 17:04:06,104 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1d018222 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 05:04:06, skipping insertion in model container [2019-11-28 17:04:06,104 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:04:05" (2/3) ... [2019-11-28 17:04:06,105 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1d018222 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 05:04:06, skipping insertion in model container [2019-11-28 17:04:06,105 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 05:04:06" (3/3) ... [2019-11-28 17:04:06,107 INFO L109 eAbstractionObserver]: Analyzing ICFG terminator_02-1.c [2019-11-28 17:04:06,118 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-28 17:04:06,125 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-28 17:04:06,139 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-28 17:04:06,178 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-28 17:04:06,179 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-28 17:04:06,179 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-28 17:04:06,179 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-28 17:04:06,180 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-28 17:04:06,180 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-28 17:04:06,180 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-28 17:04:06,180 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-28 17:04:06,202 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states. [2019-11-28 17:04:06,215 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2019-11-28 17:04:06,216 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 17:04:06,219 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2019-11-28 17:04:06,220 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-28 17:04:06,227 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 17:04:06,228 INFO L82 PathProgramCache]: Analyzing trace with hash 30108868, now seen corresponding path program 1 times [2019-11-28 17:04:06,240 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 17:04:06,241 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1820131758] [2019-11-28 17:04:06,242 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 17:04:06,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 17:04:06,391 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 17:04:06,393 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1820131758] [2019-11-28 17:04:06,394 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-28 17:04:06,394 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-11-28 17:04:06,396 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [862211808] [2019-11-28 17:04:06,401 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-11-28 17:04:06,402 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-28 17:04:06,417 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-11-28 17:04:06,418 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-11-28 17:04:06,420 INFO L87 Difference]: Start difference. First operand 11 states. Second operand 2 states. [2019-11-28 17:04:06,439 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 17:04:06,439 INFO L93 Difference]: Finished difference Result 19 states and 22 transitions. [2019-11-28 17:04:06,439 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-11-28 17:04:06,441 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 5 [2019-11-28 17:04:06,441 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-28 17:04:06,452 INFO L225 Difference]: With dead ends: 19 [2019-11-28 17:04:06,452 INFO L226 Difference]: Without dead ends: 7 [2019-11-28 17:04:06,456 INFO L630 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 [2019-11-28 17:04:06,478 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7 states. [2019-11-28 17:04:06,495 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7 to 7. [2019-11-28 17:04:06,496 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2019-11-28 17:04:06,497 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 8 transitions. [2019-11-28 17:04:06,501 INFO L78 Accepts]: Start accepts. Automaton has 7 states and 8 transitions. Word has length 5 [2019-11-28 17:04:06,501 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-28 17:04:06,501 INFO L462 AbstractCegarLoop]: Abstraction has 7 states and 8 transitions. [2019-11-28 17:04:06,502 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-11-28 17:04:06,502 INFO L276 IsEmpty]: Start isEmpty. Operand 7 states and 8 transitions. [2019-11-28 17:04:06,503 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2019-11-28 17:04:06,504 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 17:04:06,504 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2019-11-28 17:04:06,506 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-28 17:04:06,506 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 17:04:06,506 INFO L82 PathProgramCache]: Analyzing trace with hash 29810958, now seen corresponding path program 1 times [2019-11-28 17:04:06,507 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 17:04:06,507 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1631371332] [2019-11-28 17:04:06,507 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 17:04:06,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 17:04:06,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 17:04:06,595 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-28 17:04:06,595 INFO L475 BasicCegarLoop]: Counterexample might be feasible [2019-11-28 17:04:06,630 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.11 05:04:06 BoogieIcfgContainer [2019-11-28 17:04:06,630 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-11-28 17:04:06,631 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-28 17:04:06,632 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-28 17:04:06,632 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-28 17:04:06,633 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 05:04:06" (3/4) ... [2019-11-28 17:04:06,635 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2019-11-28 17:04:06,701 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2019-11-28 17:04:06,708 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-28 17:04:06,711 INFO L168 Benchmark]: Toolchain (without parser) took 1299.24 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 149.4 MB). Free memory was 961.7 MB in the beginning and 1.1 GB in the end (delta: -138.1 MB). Peak memory consumption was 11.3 MB. Max. memory is 11.5 GB. [2019-11-28 17:04:06,711 INFO L168 Benchmark]: CDTParser took 0.31 ms. Allocated memory is still 1.0 GB. Free memory is still 987.2 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-28 17:04:06,714 INFO L168 Benchmark]: CACSL2BoogieTranslator took 299.39 ms. Allocated memory is still 1.0 GB. Free memory was 961.7 MB in the beginning and 951.0 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2019-11-28 17:04:06,715 INFO L168 Benchmark]: Boogie Procedure Inliner took 91.48 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 149.4 MB). Free memory was 951.0 MB in the beginning and 1.1 GB in the end (delta: -195.1 MB). Peak memory consumption was 9.8 MB. Max. memory is 11.5 GB. [2019-11-28 17:04:06,716 INFO L168 Benchmark]: Boogie Preprocessor took 36.54 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: 6.6 MB). Peak memory consumption was 6.6 MB. Max. memory is 11.5 GB. [2019-11-28 17:04:06,722 INFO L168 Benchmark]: RCFGBuilder took 257.77 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: 13.4 MB). Peak memory consumption was 13.4 MB. Max. memory is 11.5 GB. [2019-11-28 17:04:06,723 INFO L168 Benchmark]: TraceAbstraction took 530.85 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: 19.7 MB). Peak memory consumption was 19.7 MB. Max. memory is 11.5 GB. [2019-11-28 17:04:06,724 INFO L168 Benchmark]: Witness Printer took 77.15 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: 6.6 MB). Peak memory consumption was 6.6 MB. Max. memory is 11.5 GB. [2019-11-28 17:04:06,733 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.31 ms. Allocated memory is still 1.0 GB. Free memory is still 987.2 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 299.39 ms. Allocated memory is still 1.0 GB. Free memory was 961.7 MB in the beginning and 951.0 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 91.48 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 149.4 MB). Free memory was 951.0 MB in the beginning and 1.1 GB in the end (delta: -195.1 MB). Peak memory consumption was 9.8 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 36.54 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: 6.6 MB). Peak memory consumption was 6.6 MB. Max. memory is 11.5 GB. * RCFGBuilder took 257.77 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: 13.4 MB). Peak memory consumption was 13.4 MB. Max. memory is 11.5 GB. * TraceAbstraction took 530.85 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: 19.7 MB). Peak memory consumption was 19.7 MB. Max. memory is 11.5 GB. * Witness Printer took 77.15 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: 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: 5]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L14] int x=__VERIFIER_nondet_int(); [L15] int y=__VERIFIER_nondet_int(); [L16] int z=__VERIFIER_nondet_int(); [L18] COND FALSE !(x<100 && 100