./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/ldv-regression/just_assert.i --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/ldv-regression/just_assert.i -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 ff66b083d022919cb3a5ea434b115d71e7ae4f36 ..................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.25-8bd4bc6 [2020-07-28 17:58:00,166 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-28 17:58:00,169 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-28 17:58:00,187 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-28 17:58:00,188 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-28 17:58:00,189 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-28 17:58:00,190 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-28 17:58:00,192 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-28 17:58:00,194 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-28 17:58:00,195 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-28 17:58:00,196 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-28 17:58:00,197 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-28 17:58:00,198 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-28 17:58:00,199 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-28 17:58:00,200 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-28 17:58:00,201 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-28 17:58:00,202 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-28 17:58:00,203 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-28 17:58:00,205 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-28 17:58:00,208 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-28 17:58:00,209 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-28 17:58:00,211 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-28 17:58:00,212 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-28 17:58:00,213 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-28 17:58:00,216 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-07-28 17:58:00,216 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-07-28 17:58:00,217 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-07-28 17:58:00,218 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-07-28 17:58:00,218 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-07-28 17:58:00,219 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-07-28 17:58:00,220 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-07-28 17:58:00,221 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-07-28 17:58:00,222 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-07-28 17:58:00,223 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-07-28 17:58:00,224 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-07-28 17:58:00,224 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-07-28 17:58:00,226 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-07-28 17:58:00,226 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-07-28 17:58:00,226 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-28 17:58:00,228 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-28 17:58:00,228 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-28 17:58:00,229 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2020-07-28 17:58:00,245 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-28 17:58:00,246 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-28 17:58:00,247 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-28 17:58:00,248 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-28 17:58:00,248 INFO L138 SettingsManager]: * Use SBE=true [2020-07-28 17:58:00,248 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-28 17:58:00,249 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-28 17:58:00,249 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-28 17:58:00,249 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-28 17:58:00,249 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-28 17:58:00,250 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-28 17:58:00,250 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-28 17:58:00,250 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-28 17:58:00,251 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-28 17:58:00,251 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-28 17:58:00,251 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-28 17:58:00,251 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-28 17:58:00,252 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-28 17:58:00,252 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-28 17:58:00,252 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-28 17:58:00,253 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-28 17:58:00,253 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-28 17:58:00,253 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-28 17:58:00,253 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-07-28 17:58:00,254 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-07-28 17:58:00,254 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-07-28 17:58:00,254 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-28 17:58:00,255 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-28 17:58:00,255 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-07-28 17:58:00,255 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 -> ff66b083d022919cb3a5ea434b115d71e7ae4f36 [2020-07-28 17:58:00,580 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-28 17:58:00,600 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-28 17:58:00,604 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-28 17:58:00,606 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-28 17:58:00,609 INFO L275 PluginConnector]: CDTParser initialized [2020-07-28 17:58:00,610 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-regression/just_assert.i [2020-07-28 17:58:00,686 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fdb80a19f/c17379779fa74367a5ee0d23e217959c/FLAG8d4046d8a [2020-07-28 17:58:01,160 INFO L306 CDTParser]: Found 1 translation units. [2020-07-28 17:58:01,161 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-regression/just_assert.i [2020-07-28 17:58:01,169 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fdb80a19f/c17379779fa74367a5ee0d23e217959c/FLAG8d4046d8a [2020-07-28 17:58:01,546 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fdb80a19f/c17379779fa74367a5ee0d23e217959c [2020-07-28 17:58:01,549 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-28 17:58:01,551 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-07-28 17:58:01,552 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-28 17:58:01,553 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-28 17:58:01,556 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-28 17:58:01,558 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.07 05:58:01" (1/1) ... [2020-07-28 17:58:01,561 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@736bd77b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 05:58:01, skipping insertion in model container [2020-07-28 17:58:01,561 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.07 05:58:01" (1/1) ... [2020-07-28 17:58:01,569 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-28 17:58:01,589 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-28 17:58:01,735 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-28 17:58:01,742 INFO L203 MainTranslator]: Completed pre-run [2020-07-28 17:58:01,755 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-28 17:58:01,770 INFO L208 MainTranslator]: Completed translation [2020-07-28 17:58:01,771 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 05:58:01 WrapperNode [2020-07-28 17:58:01,771 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-28 17:58:01,772 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-07-28 17:58:01,772 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-07-28 17:58:01,772 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-07-28 17:58:01,781 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 05:58:01" (1/1) ... [2020-07-28 17:58:01,787 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 05:58:01" (1/1) ... [2020-07-28 17:58:01,803 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-07-28 17:58:01,804 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-28 17:58:01,804 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-28 17:58:01,804 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-28 17:58:01,814 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 05:58:01" (1/1) ... [2020-07-28 17:58:01,814 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 05:58:01" (1/1) ... [2020-07-28 17:58:01,814 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 05:58:01" (1/1) ... [2020-07-28 17:58:01,814 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 05:58:01" (1/1) ... [2020-07-28 17:58:01,816 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 05:58:01" (1/1) ... [2020-07-28 17:58:01,872 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 05:58:01" (1/1) ... [2020-07-28 17:58:01,872 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 05:58:01" (1/1) ... [2020-07-28 17:58:01,874 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-28 17:58:01,874 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-28 17:58:01,874 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-28 17:58:01,875 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-28 17:58:01,875 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 05:58:01" (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 17:58:01,944 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-28 17:58:01,944 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-28 17:58:02,085 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-28 17:58:02,086 INFO L295 CfgBuilder]: Removed 4 assume(true) statements. [2020-07-28 17:58:02,090 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.07 05:58:02 BoogieIcfgContainer [2020-07-28 17:58:02,090 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-28 17:58:02,091 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-28 17:58:02,091 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-28 17:58:02,094 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-28 17:58:02,095 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.07 05:58:01" (1/3) ... [2020-07-28 17:58:02,096 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7291d2fb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.07 05:58:02, skipping insertion in model container [2020-07-28 17:58:02,096 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 05:58:01" (2/3) ... [2020-07-28 17:58:02,097 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7291d2fb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.07 05:58:02, skipping insertion in model container [2020-07-28 17:58:02,097 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.07 05:58:02" (3/3) ... [2020-07-28 17:58:02,099 INFO L109 eAbstractionObserver]: Analyzing ICFG just_assert.i [2020-07-28 17:58:02,107 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-07-28 17:58:02,114 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-28 17:58:02,128 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-28 17:58:02,153 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-28 17:58:02,154 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-28 17:58:02,154 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-07-28 17:58:02,154 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-28 17:58:02,154 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-28 17:58:02,154 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-28 17:58:02,154 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-28 17:58:02,155 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-28 17:58:02,168 INFO L276 IsEmpty]: Start isEmpty. Operand 8 states. [2020-07-28 17:58:02,173 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2020-07-28 17:58:02,173 INFO L414 BasicCegarLoop]: Found error trace [2020-07-28 17:58:02,174 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1] [2020-07-28 17:58:02,174 INFO L427 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-28 17:58:02,179 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-28 17:58:02,179 INFO L82 PathProgramCache]: Analyzing trace with hash 30882, now seen corresponding path program 1 times [2020-07-28 17:58:02,188 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-28 17:58:02,188 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1794626566] [2020-07-28 17:58:02,189 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-28 17:58:02,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-28 17:58:02,300 INFO L280 TraceCheckUtils]: 0: Hoare triple {11#true} havoc main_#res; {11#true} is VALID [2020-07-28 17:58:02,301 INFO L280 TraceCheckUtils]: 1: Hoare triple {11#true} assume false; {12#false} is VALID [2020-07-28 17:58:02,302 INFO L280 TraceCheckUtils]: 2: Hoare triple {12#false} assume !false; {12#false} is VALID [2020-07-28 17:58:02,304 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 17:58:02,305 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1794626566] [2020-07-28 17:58:02,306 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-28 17:58:02,306 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-07-28 17:58:02,307 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1830599809] [2020-07-28 17:58:02,313 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 3 [2020-07-28 17:58:02,315 INFO L84 Accepts]: Finished accepts. word is accepted. [2020-07-28 17:58:02,318 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 2 states. [2020-07-28 17:58:02,334 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 3 edges. 3 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2020-07-28 17:58:02,334 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-07-28 17:58:02,334 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-28 17:58:02,349 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-07-28 17:58:02,350 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-07-28 17:58:02,353 INFO L87 Difference]: Start difference. First operand 8 states. Second operand 2 states. [2020-07-28 17:58:02,488 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-28 17:58:02,489 INFO L93 Difference]: Finished difference Result 12 states and 11 transitions. [2020-07-28 17:58:02,489 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-07-28 17:58:02,489 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 3 [2020-07-28 17:58:02,490 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-28 17:58:02,491 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2020-07-28 17:58:02,498 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 11 transitions. [2020-07-28 17:58:02,500 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2020-07-28 17:58:02,505 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 11 transitions. [2020-07-28 17:58:02,506 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 2 states and 11 transitions. [2020-07-28 17:58:02,574 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 11 edges. 11 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2020-07-28 17:58:02,584 INFO L225 Difference]: With dead ends: 12 [2020-07-28 17:58:02,584 INFO L226 Difference]: Without dead ends: 0 [2020-07-28 17:58:02,594 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 17:58:02,611 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-07-28 17:58:02,618 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-07-28 17:58:02,618 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2020-07-28 17:58:02,619 INFO L82 GeneralOperation]: Start isEquivalent. First operand 0 states. Second operand 0 states. [2020-07-28 17:58:02,620 INFO L74 IsIncluded]: Start isIncluded. First operand 0 states. Second operand 0 states. [2020-07-28 17:58:02,620 INFO L87 Difference]: Start difference. First operand 0 states. Second operand 0 states. [2020-07-28 17:58:02,621 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-28 17:58:02,621 INFO L93 Difference]: Finished difference Result 0 states and 0 transitions. [2020-07-28 17:58:02,622 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-07-28 17:58:02,622 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-28 17:58:02,622 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2020-07-28 17:58:02,623 INFO L74 IsIncluded]: Start isIncluded. First operand 0 states. Second operand 0 states. [2020-07-28 17:58:02,623 INFO L87 Difference]: Start difference. First operand 0 states. Second operand 0 states. [2020-07-28 17:58:02,624 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-28 17:58:02,624 INFO L93 Difference]: Finished difference Result 0 states and 0 transitions. [2020-07-28 17:58:02,624 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-07-28 17:58:02,625 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-28 17:58:02,625 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2020-07-28 17:58:02,625 INFO L88 GeneralOperation]: Finished isEquivalent. [2020-07-28 17:58:02,626 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2020-07-28 17:58:02,626 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-07-28 17:58:02,626 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-07-28 17:58:02,628 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 3 [2020-07-28 17:58:02,628 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-28 17:58:02,629 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-07-28 17:58:02,629 INFO L480 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-07-28 17:58:02,630 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-07-28 17:58:02,630 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-28 17:58:02,631 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-07-28 17:58:02,633 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-07-28 17:58:02,648 INFO L268 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-07-28 17:58:02,648 INFO L268 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2020-07-28 17:58:02,648 INFO L268 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-07-28 17:58:02,649 INFO L268 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 8) no Hoare annotation was computed. [2020-07-28 17:58:02,649 INFO L271 CegarLoopResult]: At program point L10(lines 5 11) the Hoare annotation is: true [2020-07-28 17:58:02,649 INFO L268 CegarLoopResult]: For program point L8(line 8) no Hoare annotation was computed. [2020-07-28 17:58:02,650 INFO L268 CegarLoopResult]: For program point L7(lines 7 9) no Hoare annotation was computed. [2020-07-28 17:58:02,650 INFO L268 CegarLoopResult]: For program point L7-2(lines 7 9) no Hoare annotation was computed. [2020-07-28 17:58:02,653 WARN L170 areAnnotationChecker]: ULTIMATE.startENTRY has no Hoare annotation [2020-07-28 17:58:02,653 WARN L170 areAnnotationChecker]: L7 has no Hoare annotation [2020-07-28 17:58:02,653 WARN L170 areAnnotationChecker]: L7 has no Hoare annotation [2020-07-28 17:58:02,653 WARN L170 areAnnotationChecker]: L8 has no Hoare annotation [2020-07-28 17:58:02,654 WARN L170 areAnnotationChecker]: L8 has no Hoare annotation [2020-07-28 17:58:02,654 WARN L170 areAnnotationChecker]: L7-2 has no Hoare annotation [2020-07-28 17:58:02,654 WARN L170 areAnnotationChecker]: ULTIMATE.startFINAL has no Hoare annotation [2020-07-28 17:58:02,655 WARN L170 areAnnotationChecker]: ULTIMATE.startFINAL has no Hoare annotation [2020-07-28 17:58:02,655 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 17:58:02,661 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.07 05:58:02 BoogieIcfgContainer [2020-07-28 17:58:02,661 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-28 17:58:02,661 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-07-28 17:58:02,662 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-07-28 17:58:02,662 INFO L275 PluginConnector]: Witness Printer initialized [2020-07-28 17:58:02,663 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.07 05:58:02" (3/4) ... [2020-07-28 17:58:02,666 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-07-28 17:58:02,678 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2020-07-28 17:58:02,678 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2020-07-28 17:58:02,715 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2020-07-28 17:58:02,716 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-07-28 17:58:02,719 INFO L168 Benchmark]: Toolchain (without parser) took 1168.31 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 135.8 MB). Free memory was 957.6 MB in the beginning and 1.1 GB in the end (delta: -123.0 MB). Peak memory consumption was 12.7 MB. Max. memory is 11.5 GB. [2020-07-28 17:58:02,720 INFO L168 Benchmark]: CDTParser took 0.97 ms. Allocated memory is still 1.0 GB. Free memory is still 987.1 MB. There was no memory consumed. Max. memory is 11.5 GB. [2020-07-28 17:58:02,721 INFO L168 Benchmark]: CACSL2BoogieTranslator took 219.09 ms. Allocated memory is still 1.0 GB. Free memory was 957.6 MB in the beginning and 946.8 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2020-07-28 17:58:02,722 INFO L168 Benchmark]: Boogie Procedure Inliner took 31.71 ms. Allocated memory is still 1.0 GB. Free memory is still 946.8 MB. There was no memory consumed. Max. memory is 11.5 GB. [2020-07-28 17:58:02,723 INFO L168 Benchmark]: Boogie Preprocessor took 70.20 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 135.8 MB). Free memory was 946.8 MB in the beginning and 1.1 GB in the end (delta: -192.0 MB). Peak memory consumption was 9.8 MB. Max. memory is 11.5 GB. [2020-07-28 17:58:02,724 INFO L168 Benchmark]: RCFGBuilder took 215.84 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: 25.2 MB). Peak memory consumption was 25.2 MB. Max. memory is 11.5 GB. [2020-07-28 17:58:02,724 INFO L168 Benchmark]: TraceAbstraction took 570.07 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: 33.1 MB). Peak memory consumption was 33.1 MB. Max. memory is 11.5 GB. [2020-07-28 17:58:02,725 INFO L168 Benchmark]: Witness Printer took 54.61 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 17:58:02,729 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 0.97 ms. Allocated memory is still 1.0 GB. Free memory is still 987.1 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 219.09 ms. Allocated memory is still 1.0 GB. Free memory was 957.6 MB in the beginning and 946.8 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 31.71 ms. Allocated memory is still 1.0 GB. Free memory is still 946.8 MB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 70.20 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 135.8 MB). Free memory was 946.8 MB in the beginning and 1.1 GB in the end (delta: -192.0 MB). Peak memory consumption was 9.8 MB. Max. memory is 11.5 GB. * RCFGBuilder took 215.84 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: 25.2 MB). Peak memory consumption was 25.2 MB. Max. memory is 11.5 GB. * TraceAbstraction took 570.07 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: 33.1 MB). Peak memory consumption was 33.1 MB. Max. memory is 11.5 GB. * Witness Printer took 54.61 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. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 8]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 5]: Loop Invariant Derived loop invariant: 1 - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 8 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 0.4s, OverallIterations: 1, TraceHistogramMax: 1, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 5 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=8occurred 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: 0.0s HoareAnnotationTime, 1 LocationsWithAnnotation, 1 PreInvPairs, 2 NumberOfFragments, 1 HoareAnnotationTreeSize, 1 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 1 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 3 NumberOfCodeBlocks, 3 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 2 ConstructedInterpolants, 0 QuantifiedInterpolants, 4 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 correct! Received shutdown request...