./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/ldv-regression/test29-1.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/ldv-regression/test29-1.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 2aa6c4430411ceeb023b25a4c3a2c7228d94ed35 ......................................................................................................................................................................................................................................................................... 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 16:57:42,119 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-28 16:57:42,122 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-28 16:57:42,140 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-28 16:57:42,141 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-28 16:57:42,143 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-28 16:57:42,146 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-28 16:57:42,157 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-28 16:57:42,162 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-28 16:57:42,166 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-28 16:57:42,168 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-28 16:57:42,170 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-28 16:57:42,171 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-28 16:57:42,174 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-28 16:57:42,175 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-28 16:57:42,177 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-28 16:57:42,178 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-28 16:57:42,180 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-28 16:57:42,183 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-28 16:57:42,186 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-28 16:57:42,188 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-28 16:57:42,189 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-28 16:57:42,190 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-28 16:57:42,191 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-28 16:57:42,193 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-28 16:57:42,193 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-28 16:57:42,193 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-28 16:57:42,194 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-28 16:57:42,195 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-28 16:57:42,196 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-28 16:57:42,196 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-28 16:57:42,197 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-28 16:57:42,197 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-28 16:57:42,198 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-28 16:57:42,199 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-28 16:57:42,200 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-28 16:57:42,200 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-28 16:57:42,201 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-28 16:57:42,201 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-28 16:57:42,202 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-28 16:57:42,203 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-28 16:57:42,204 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2019-11-28 16:57:42,219 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-28 16:57:42,220 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-28 16:57:42,221 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-28 16:57:42,221 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-28 16:57:42,221 INFO L138 SettingsManager]: * Use SBE=true [2019-11-28 16:57:42,222 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-28 16:57:42,222 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-28 16:57:42,222 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-28 16:57:42,222 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-28 16:57:42,223 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-28 16:57:42,223 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-28 16:57:42,223 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-28 16:57:42,223 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-28 16:57:42,223 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-28 16:57:42,224 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-28 16:57:42,224 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-28 16:57:42,224 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-28 16:57:42,224 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-28 16:57:42,224 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-28 16:57:42,225 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-28 16:57:42,225 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-28 16:57:42,225 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-28 16:57:42,225 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-28 16:57:42,226 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-28 16:57:42,226 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-28 16:57:42,226 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-28 16:57:42,226 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-28 16:57:42,226 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-28 16:57:42,227 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2019-11-28 16:57:42,227 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 -> 2aa6c4430411ceeb023b25a4c3a2c7228d94ed35 [2019-11-28 16:57:42,602 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-28 16:57:42,624 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-28 16:57:42,629 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-28 16:57:42,630 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-28 16:57:42,632 INFO L275 PluginConnector]: CDTParser initialized [2019-11-28 16:57:42,633 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-regression/test29-1.c [2019-11-28 16:57:42,710 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e37a11310/c57f5569062a45208157f87c3cdc69a0/FLAG82017bfb2 [2019-11-28 16:57:43,160 INFO L306 CDTParser]: Found 1 translation units. [2019-11-28 16:57:43,161 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-regression/test29-1.c [2019-11-28 16:57:43,165 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e37a11310/c57f5569062a45208157f87c3cdc69a0/FLAG82017bfb2 [2019-11-28 16:57:43,529 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e37a11310/c57f5569062a45208157f87c3cdc69a0 [2019-11-28 16:57:43,532 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-28 16:57:43,533 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-11-28 16:57:43,534 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-28 16:57:43,535 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-28 16:57:43,538 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-28 16:57:43,541 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 04:57:43" (1/1) ... [2019-11-28 16:57:43,546 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1c8e4261 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:57:43, skipping insertion in model container [2019-11-28 16:57:43,546 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 04:57:43" (1/1) ... [2019-11-28 16:57:43,554 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-11-28 16:57:43,574 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-11-28 16:57:43,750 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-28 16:57:43,763 INFO L203 MainTranslator]: Completed pre-run [2019-11-28 16:57:43,781 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-28 16:57:43,795 INFO L208 MainTranslator]: Completed translation [2019-11-28 16:57:43,795 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:57:43 WrapperNode [2019-11-28 16:57:43,795 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-28 16:57:43,796 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-28 16:57:43,796 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-28 16:57:43,796 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-28 16:57:43,802 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:57:43" (1/1) ... [2019-11-28 16:57:43,868 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:57:43" (1/1) ... [2019-11-28 16:57:43,893 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-28 16:57:43,893 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-28 16:57:43,894 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-28 16:57:43,894 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-28 16:57:43,904 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:57:43" (1/1) ... [2019-11-28 16:57:43,904 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:57:43" (1/1) ... [2019-11-28 16:57:43,918 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:57:43" (1/1) ... [2019-11-28 16:57:43,919 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:57:43" (1/1) ... [2019-11-28 16:57:43,924 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:57:43" (1/1) ... [2019-11-28 16:57:43,926 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:57:43" (1/1) ... [2019-11-28 16:57:43,928 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:57:43" (1/1) ... [2019-11-28 16:57:43,930 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-28 16:57:43,931 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-28 16:57:43,931 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-28 16:57:43,932 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-28 16:57:43,932 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:57:43" (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 16:57:43,984 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-11-28 16:57:43,984 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-28 16:57:43,984 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-28 16:57:43,984 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-11-28 16:57:43,985 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-11-28 16:57:43,985 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-11-28 16:57:44,208 INFO L282 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-28 16:57:44,208 INFO L287 CfgBuilder]: Removed 4 assume(true) statements. [2019-11-28 16:57:44,210 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 04:57:44 BoogieIcfgContainer [2019-11-28 16:57:44,210 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-28 16:57:44,211 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-28 16:57:44,211 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-28 16:57:44,215 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-28 16:57:44,215 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 04:57:43" (1/3) ... [2019-11-28 16:57:44,216 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4a702a38 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 04:57:44, skipping insertion in model container [2019-11-28 16:57:44,216 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:57:43" (2/3) ... [2019-11-28 16:57:44,216 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4a702a38 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 04:57:44, skipping insertion in model container [2019-11-28 16:57:44,216 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 04:57:44" (3/3) ... [2019-11-28 16:57:44,218 INFO L109 eAbstractionObserver]: Analyzing ICFG test29-1.c [2019-11-28 16:57:44,229 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-28 16:57:44,241 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-28 16:57:44,255 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-28 16:57:44,281 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-28 16:57:44,281 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-28 16:57:44,281 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-28 16:57:44,282 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-28 16:57:44,282 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-28 16:57:44,282 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-28 16:57:44,282 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-28 16:57:44,283 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-28 16:57:44,295 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states. [2019-11-28 16:57:44,300 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2019-11-28 16:57:44,300 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 16:57:44,301 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-28 16:57:44,301 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-28 16:57:44,306 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 16:57:44,306 INFO L82 PathProgramCache]: Analyzing trace with hash -594068692, now seen corresponding path program 1 times [2019-11-28 16:57:44,315 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 16:57:44,316 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1382656659] [2019-11-28 16:57:44,316 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 16:57:44,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 16:57:44,545 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 16:57:44,546 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1382656659] [2019-11-28 16:57:44,547 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-28 16:57:44,547 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-11-28 16:57:44,548 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [348703678] [2019-11-28 16:57:44,554 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-11-28 16:57:44,554 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-28 16:57:44,574 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-11-28 16:57:44,575 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-11-28 16:57:44,578 INFO L87 Difference]: Start difference. First operand 13 states. Second operand 6 states. [2019-11-28 16:57:44,759 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 16:57:44,759 INFO L93 Difference]: Finished difference Result 25 states and 32 transitions. [2019-11-28 16:57:44,760 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-11-28 16:57:44,762 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 9 [2019-11-28 16:57:44,762 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-28 16:57:44,772 INFO L225 Difference]: With dead ends: 25 [2019-11-28 16:57:44,772 INFO L226 Difference]: Without dead ends: 10 [2019-11-28 16:57:44,776 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2019-11-28 16:57:44,793 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10 states. [2019-11-28 16:57:44,806 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10 to 10. [2019-11-28 16:57:44,808 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2019-11-28 16:57:44,808 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 9 transitions. [2019-11-28 16:57:44,810 INFO L78 Accepts]: Start accepts. Automaton has 10 states and 9 transitions. Word has length 9 [2019-11-28 16:57:44,810 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-28 16:57:44,810 INFO L462 AbstractCegarLoop]: Abstraction has 10 states and 9 transitions. [2019-11-28 16:57:44,811 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-11-28 16:57:44,811 INFO L276 IsEmpty]: Start isEmpty. Operand 10 states and 9 transitions. [2019-11-28 16:57:44,811 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2019-11-28 16:57:44,812 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 16:57:44,812 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-28 16:57:44,812 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-28 16:57:44,813 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 16:57:44,813 INFO L82 PathProgramCache]: Analyzing trace with hash 1182785712, now seen corresponding path program 1 times [2019-11-28 16:57:44,813 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 16:57:44,814 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2069144013] [2019-11-28 16:57:44,814 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 16:57:44,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 16:57:44,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 16:57:44,890 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-28 16:57:44,890 INFO L475 BasicCegarLoop]: Counterexample might be feasible [2019-11-28 16:57:44,916 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.11 04:57:44 BoogieIcfgContainer [2019-11-28 16:57:44,917 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-11-28 16:57:44,917 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-28 16:57:44,917 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-28 16:57:44,917 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-28 16:57:44,918 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 04:57:44" (3/4) ... [2019-11-28 16:57:44,920 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2019-11-28 16:57:44,961 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2019-11-28 16:57:44,962 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-28 16:57:44,964 INFO L168 Benchmark]: Toolchain (without parser) took 1430.01 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 57.7 MB). Free memory was 956.3 MB in the beginning and 990.7 MB in the end (delta: -34.4 MB). Peak memory consumption was 23.3 MB. Max. memory is 11.5 GB. [2019-11-28 16:57:44,965 INFO L168 Benchmark]: CDTParser took 0.91 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 16:57:44,966 INFO L168 Benchmark]: CACSL2BoogieTranslator took 261.00 ms. Allocated memory is still 1.0 GB. Free memory was 956.3 MB in the beginning and 945.6 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2019-11-28 16:57:44,967 INFO L168 Benchmark]: Boogie Procedure Inliner took 97.38 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 57.7 MB). Free memory was 945.6 MB in the beginning and 1.1 GB in the end (delta: -107.9 MB). Peak memory consumption was 9.6 MB. Max. memory is 11.5 GB. [2019-11-28 16:57:44,968 INFO L168 Benchmark]: Boogie Preprocessor took 37.08 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 7.0 MB). Peak memory consumption was 7.0 MB. Max. memory is 11.5 GB. [2019-11-28 16:57:44,968 INFO L168 Benchmark]: RCFGBuilder took 278.90 ms. Allocated memory is still 1.1 GB. Free memory was 1.0 GB in the beginning and 1.0 GB in the end (delta: 13.5 MB). Peak memory consumption was 13.5 MB. Max. memory is 11.5 GB. [2019-11-28 16:57:44,969 INFO L168 Benchmark]: TraceAbstraction took 705.74 ms. Allocated memory is still 1.1 GB. Free memory was 1.0 GB in the beginning and 997.8 MB in the end (delta: 28.2 MB). Peak memory consumption was 28.2 MB. Max. memory is 11.5 GB. [2019-11-28 16:57:44,970 INFO L168 Benchmark]: Witness Printer took 44.61 ms. Allocated memory is still 1.1 GB. Free memory was 997.8 MB in the beginning and 990.7 MB in the end (delta: 7.0 MB). Peak memory consumption was 7.0 MB. Max. memory is 11.5 GB. [2019-11-28 16:57:44,975 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.91 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 261.00 ms. Allocated memory is still 1.0 GB. Free memory was 956.3 MB in the beginning and 945.6 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 97.38 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 57.7 MB). Free memory was 945.6 MB in the beginning and 1.1 GB in the end (delta: -107.9 MB). Peak memory consumption was 9.6 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 37.08 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 7.0 MB). Peak memory consumption was 7.0 MB. Max. memory is 11.5 GB. * RCFGBuilder took 278.90 ms. Allocated memory is still 1.1 GB. Free memory was 1.0 GB in the beginning and 1.0 GB in the end (delta: 13.5 MB). Peak memory consumption was 13.5 MB. Max. memory is 11.5 GB. * TraceAbstraction took 705.74 ms. Allocated memory is still 1.1 GB. Free memory was 1.0 GB in the beginning and 997.8 MB in the end (delta: 28.2 MB). Peak memory consumption was 28.2 MB. Max. memory is 11.5 GB. * Witness Printer took 44.61 ms. Allocated memory is still 1.1 GB. Free memory was 997.8 MB in the beginning and 990.7 MB in the end (delta: 7.0 MB). Peak memory consumption was 7.0 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 28]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L13] union dummy d1, d2; [L14] int n = __VERIFIER_nondet_int(); [L15] EXPR n ? &d1 : &d2 [L15] union dummy *pd = n ? &d1 : &d2; [L16] d1.a = __VERIFIER_nondet_int() [L17] COND FALSE !(pd == &d1) [L20] pd->b = 0 [L22] pd == &d2 && d1.a != 0 [L22] EXPR d1.a [L22] pd == &d2 && d1.a != 0 [L22] COND TRUE pd == &d2 && d1.a != 0 [L28] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 13 locations, 1 error locations. Result: UNSAFE, OverallTime: 0.6s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 6 SDtfs, 18 SDslu, 12 SDs, 0 SdLazy, 35 SolverSat, 5 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=13occurred 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, 0.1s InterpolantComputationTime, 18 NumberOfCodeBlocks, 18 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 8 ConstructedInterpolants, 0 QuantifiedInterpolants, 264 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, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...