/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/loops/for_bounded_loop1.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-6598664 [2019-11-23 22:13:36,147 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-23 22:13:36,149 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-23 22:13:36,169 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-23 22:13:36,169 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-23 22:13:36,171 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-23 22:13:36,173 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-23 22:13:36,182 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-23 22:13:36,186 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-23 22:13:36,190 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-23 22:13:36,192 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-23 22:13:36,193 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-23 22:13:36,193 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-23 22:13:36,195 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-23 22:13:36,198 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-23 22:13:36,199 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-23 22:13:36,200 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-23 22:13:36,201 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-23 22:13:36,203 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-23 22:13:36,207 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-23 22:13:36,211 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-23 22:13:36,213 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-23 22:13:36,215 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-23 22:13:36,216 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-23 22:13:36,218 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-23 22:13:36,218 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-23 22:13:36,218 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-23 22:13:36,220 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-23 22:13:36,221 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-23 22:13:36,222 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-23 22:13:36,223 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-23 22:13:36,224 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-23 22:13:36,225 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-23 22:13:36,226 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-23 22:13:36,228 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-23 22:13:36,228 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-23 22:13:36,228 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-23 22:13:36,229 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-23 22:13:36,229 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-23 22:13:36,231 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-23 22:13:36,233 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-23 22:13:36,234 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2019-11-23 22:13:36,249 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-23 22:13:36,249 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-23 22:13:36,250 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-23 22:13:36,251 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-23 22:13:36,251 INFO L138 SettingsManager]: * Use SBE=true [2019-11-23 22:13:36,251 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-23 22:13:36,251 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-23 22:13:36,251 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-23 22:13:36,252 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-23 22:13:36,252 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-23 22:13:36,252 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-23 22:13:36,252 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-23 22:13:36,252 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-23 22:13:36,253 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2019-11-23 22:13:36,253 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-23 22:13:36,253 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-23 22:13:36,253 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-23 22:13:36,253 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-23 22:13:36,254 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-23 22:13:36,254 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-23 22:13:36,254 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-23 22:13:36,254 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-23 22:13:36,254 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-23 22:13:36,255 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-23 22:13:36,255 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-23 22:13:36,255 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-23 22:13:36,255 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-23 22:13:36,255 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-23 22:13:36,255 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-23 22:13:36,256 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-11-23 22:13:36,530 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-23 22:13:36,543 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-23 22:13:36,547 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-23 22:13:36,549 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-23 22:13:36,549 INFO L275 PluginConnector]: CDTParser initialized [2019-11-23 22:13:36,550 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loops/for_bounded_loop1.c [2019-11-23 22:13:36,611 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0af4f9dc6/1fd0de6a6d5b4a35a667ad636d629cda/FLAG4cd2ec3d0 [2019-11-23 22:13:36,989 INFO L306 CDTParser]: Found 1 translation units. [2019-11-23 22:13:36,989 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loops/for_bounded_loop1.c [2019-11-23 22:13:36,995 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0af4f9dc6/1fd0de6a6d5b4a35a667ad636d629cda/FLAG4cd2ec3d0 [2019-11-23 22:13:37,430 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0af4f9dc6/1fd0de6a6d5b4a35a667ad636d629cda [2019-11-23 22:13:37,438 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-23 22:13:37,440 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2019-11-23 22:13:37,441 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-23 22:13:37,441 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-23 22:13:37,444 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-23 22:13:37,445 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 10:13:37" (1/1) ... [2019-11-23 22:13:37,448 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@67c49f5d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:13:37, skipping insertion in model container [2019-11-23 22:13:37,448 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 10:13:37" (1/1) ... [2019-11-23 22:13:37,457 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-11-23 22:13:37,474 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-11-23 22:13:37,683 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-23 22:13:37,690 INFO L203 MainTranslator]: Completed pre-run [2019-11-23 22:13:37,711 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-23 22:13:37,727 INFO L208 MainTranslator]: Completed translation [2019-11-23 22:13:37,728 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:13:37 WrapperNode [2019-11-23 22:13:37,728 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-23 22:13:37,729 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-23 22:13:37,729 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-23 22:13:37,729 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-23 22:13:37,739 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:13:37" (1/1) ... [2019-11-23 22:13:37,747 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:13:37" (1/1) ... [2019-11-23 22:13:37,844 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-23 22:13:37,844 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-23 22:13:37,844 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-23 22:13:37,844 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-23 22:13:37,854 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:13:37" (1/1) ... [2019-11-23 22:13:37,854 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:13:37" (1/1) ... [2019-11-23 22:13:37,855 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:13:37" (1/1) ... [2019-11-23 22:13:37,855 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:13:37" (1/1) ... [2019-11-23 22:13:37,858 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:13:37" (1/1) ... [2019-11-23 22:13:37,865 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:13:37" (1/1) ... [2019-11-23 22:13:37,866 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:13:37" (1/1) ... [2019-11-23 22:13:37,870 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-23 22:13:37,871 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-23 22:13:37,871 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-23 22:13:37,871 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-23 22:13:37,871 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:13:37" (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 [2019-11-23 22:13:37,937 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-23 22:13:37,938 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-23 22:13:38,119 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-23 22:13:38,120 INFO L284 CfgBuilder]: Removed 11 assume(true) statements. [2019-11-23 22:13:38,121 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 10:13:38 BoogieIcfgContainer [2019-11-23 22:13:38,121 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-23 22:13:38,123 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-23 22:13:38,131 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-23 22:13:38,137 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-23 22:13:38,137 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 10:13:37" (1/3) ... [2019-11-23 22:13:38,139 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5c74c664 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 10:13:38, skipping insertion in model container [2019-11-23 22:13:38,139 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:13:37" (2/3) ... [2019-11-23 22:13:38,147 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5c74c664 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 10:13:38, skipping insertion in model container [2019-11-23 22:13:38,147 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 10:13:38" (3/3) ... [2019-11-23 22:13:38,152 INFO L109 eAbstractionObserver]: Analyzing ICFG for_bounded_loop1.c [2019-11-23 22:13:38,178 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-23 22:13:38,195 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 3 error locations. [2019-11-23 22:13:38,207 INFO L249 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2019-11-23 22:13:38,251 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-23 22:13:38,251 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-23 22:13:38,251 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-23 22:13:38,251 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-23 22:13:38,251 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-23 22:13:38,252 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-23 22:13:38,252 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-23 22:13:38,252 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-23 22:13:38,276 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states. [2019-11-23 22:13:38,282 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2019-11-23 22:13:38,282 INFO L402 BasicCegarLoop]: Found error trace [2019-11-23 22:13:38,283 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2019-11-23 22:13:38,284 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-23 22:13:38,290 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-23 22:13:38,291 INFO L82 PathProgramCache]: Analyzing trace with hash 29745418, now seen corresponding path program 1 times [2019-11-23 22:13:38,300 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-23 22:13:38,302 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [13389302] [2019-11-23 22:13:38,302 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-23 22:13:38,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-23 22:13:38,519 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-23 22:13:38,520 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [13389302] [2019-11-23 22:13:38,521 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-23 22:13:38,521 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-23 22:13:38,523 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1387624973] [2019-11-23 22:13:38,526 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-23 22:13:38,527 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-23 22:13:38,537 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-23 22:13:38,538 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-11-23 22:13:38,539 INFO L87 Difference]: Start difference. First operand 19 states. Second operand 4 states. [2019-11-23 22:13:38,647 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-23 22:13:38,647 INFO L93 Difference]: Finished difference Result 48 states and 61 transitions. [2019-11-23 22:13:38,648 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-23 22:13:38,649 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 5 [2019-11-23 22:13:38,650 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-23 22:13:38,659 INFO L225 Difference]: With dead ends: 48 [2019-11-23 22:13:38,660 INFO L226 Difference]: Without dead ends: 22 [2019-11-23 22:13:38,663 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-11-23 22:13:38,682 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2019-11-23 22:13:38,698 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 18. [2019-11-23 22:13:38,700 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2019-11-23 22:13:38,701 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 19 transitions. [2019-11-23 22:13:38,702 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 19 transitions. Word has length 5 [2019-11-23 22:13:38,703 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-23 22:13:38,703 INFO L462 AbstractCegarLoop]: Abstraction has 18 states and 19 transitions. [2019-11-23 22:13:38,703 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-23 22:13:38,703 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 19 transitions. [2019-11-23 22:13:38,704 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2019-11-23 22:13:38,704 INFO L402 BasicCegarLoop]: Found error trace [2019-11-23 22:13:38,704 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2019-11-23 22:13:38,706 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-23 22:13:38,706 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-23 22:13:38,707 INFO L82 PathProgramCache]: Analyzing trace with hash 922077226, now seen corresponding path program 1 times [2019-11-23 22:13:38,707 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-23 22:13:38,709 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1069329699] [2019-11-23 22:13:38,709 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-23 22:13:38,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-23 22:13:38,764 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-23 22:13:38,764 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1069329699] [2019-11-23 22:13:38,765 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-23 22:13:38,765 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-23 22:13:38,765 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1377605304] [2019-11-23 22:13:38,768 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-23 22:13:38,769 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-23 22:13:38,769 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-23 22:13:38,775 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-23 22:13:38,775 INFO L87 Difference]: Start difference. First operand 18 states and 19 transitions. Second operand 3 states. [2019-11-23 22:13:38,799 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-23 22:13:38,800 INFO L93 Difference]: Finished difference Result 22 states and 22 transitions. [2019-11-23 22:13:38,801 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-23 22:13:38,802 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 6 [2019-11-23 22:13:38,802 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-23 22:13:38,803 INFO L225 Difference]: With dead ends: 22 [2019-11-23 22:13:38,803 INFO L226 Difference]: Without dead ends: 18 [2019-11-23 22:13:38,804 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-23 22:13:38,805 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2019-11-23 22:13:38,810 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2019-11-23 22:13:38,811 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2019-11-23 22:13:38,811 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 18 transitions. [2019-11-23 22:13:38,812 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 18 transitions. Word has length 6 [2019-11-23 22:13:38,812 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-23 22:13:38,812 INFO L462 AbstractCegarLoop]: Abstraction has 18 states and 18 transitions. [2019-11-23 22:13:38,812 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-23 22:13:38,812 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 18 transitions. [2019-11-23 22:13:38,814 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2019-11-23 22:13:38,814 INFO L402 BasicCegarLoop]: Found error trace [2019-11-23 22:13:38,814 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2019-11-23 22:13:38,815 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-23 22:13:38,815 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-23 22:13:38,816 INFO L82 PathProgramCache]: Analyzing trace with hash 1387310901, now seen corresponding path program 1 times [2019-11-23 22:13:38,816 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-23 22:13:38,817 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [359924724] [2019-11-23 22:13:38,817 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-23 22:13:38,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-23 22:13:39,031 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-23 22:13:39,033 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [359924724] [2019-11-23 22:13:39,033 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-23 22:13:39,033 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-11-23 22:13:39,034 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1906536619] [2019-11-23 22:13:39,035 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-11-23 22:13:39,035 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-23 22:13:39,035 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-11-23 22:13:39,036 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-11-23 22:13:39,036 INFO L87 Difference]: Start difference. First operand 18 states and 18 transitions. Second operand 6 states. [2019-11-23 22:13:39,133 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-23 22:13:39,134 INFO L93 Difference]: Finished difference Result 19 states and 19 transitions. [2019-11-23 22:13:39,134 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-11-23 22:13:39,134 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 8 [2019-11-23 22:13:39,135 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-23 22:13:39,135 INFO L225 Difference]: With dead ends: 19 [2019-11-23 22:13:39,135 INFO L226 Difference]: Without dead ends: 15 [2019-11-23 22:13:39,136 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=55, Unknown=0, NotChecked=0, Total=90 [2019-11-23 22:13:39,136 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2019-11-23 22:13:39,139 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 13. [2019-11-23 22:13:39,140 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2019-11-23 22:13:39,140 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 13 transitions. [2019-11-23 22:13:39,140 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 13 transitions. Word has length 8 [2019-11-23 22:13:39,141 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-23 22:13:39,141 INFO L462 AbstractCegarLoop]: Abstraction has 13 states and 13 transitions. [2019-11-23 22:13:39,141 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-11-23 22:13:39,141 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 13 transitions. [2019-11-23 22:13:39,141 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2019-11-23 22:13:39,142 INFO L402 BasicCegarLoop]: Found error trace [2019-11-23 22:13:39,142 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-23 22:13:39,142 INFO L410 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-23 22:13:39,142 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-23 22:13:39,143 INFO L82 PathProgramCache]: Analyzing trace with hash 681382811, now seen corresponding path program 1 times [2019-11-23 22:13:39,143 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-23 22:13:39,143 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [476357644] [2019-11-23 22:13:39,143 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-23 22:13:39,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-23 22:13:39,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-23 22:13:39,219 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-23 22:13:39,219 INFO L475 BasicCegarLoop]: Counterexample might be feasible [2019-11-23 22:13:39,245 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.11 10:13:39 BoogieIcfgContainer [2019-11-23 22:13:39,245 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-11-23 22:13:39,249 INFO L168 Benchmark]: Toolchain (without parser) took 1807.19 ms. Allocated memory was 138.9 MB in the beginning and 202.4 MB in the end (delta: 63.4 MB). Free memory was 102.2 MB in the beginning and 112.2 MB in the end (delta: -10.0 MB). Peak memory consumption was 53.4 MB. Max. memory is 7.1 GB. [2019-11-23 22:13:39,252 INFO L168 Benchmark]: CDTParser took 1.35 ms. Allocated memory is still 138.9 MB. Free memory was 120.9 MB in the beginning and 120.7 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2019-11-23 22:13:39,253 INFO L168 Benchmark]: CACSL2BoogieTranslator took 287.72 ms. Allocated memory is still 138.9 MB. Free memory was 102.0 MB in the beginning and 92.5 MB in the end (delta: 9.6 MB). Peak memory consumption was 9.6 MB. Max. memory is 7.1 GB. [2019-11-23 22:13:39,255 INFO L168 Benchmark]: Boogie Procedure Inliner took 115.21 ms. Allocated memory was 138.9 MB in the beginning and 202.4 MB in the end (delta: 63.4 MB). Free memory was 92.5 MB in the beginning and 181.5 MB in the end (delta: -89.1 MB). Peak memory consumption was 15.0 MB. Max. memory is 7.1 GB. [2019-11-23 22:13:39,256 INFO L168 Benchmark]: Boogie Preprocessor took 26.18 ms. Allocated memory is still 202.4 MB. Free memory was 181.5 MB in the beginning and 179.9 MB in the end (delta: 1.7 MB). Peak memory consumption was 1.7 MB. Max. memory is 7.1 GB. [2019-11-23 22:13:39,261 INFO L168 Benchmark]: RCFGBuilder took 250.76 ms. Allocated memory is still 202.4 MB. Free memory was 179.9 MB in the beginning and 168.0 MB in the end (delta: 11.8 MB). Peak memory consumption was 11.8 MB. Max. memory is 7.1 GB. [2019-11-23 22:13:39,262 INFO L168 Benchmark]: TraceAbstraction took 1122.66 ms. Allocated memory is still 202.4 MB. Free memory was 168.0 MB in the beginning and 112.2 MB in the end (delta: 55.8 MB). Peak memory consumption was 55.8 MB. Max. memory is 7.1 GB. [2019-11-23 22:13:39,273 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 1.35 ms. Allocated memory is still 138.9 MB. Free memory was 120.9 MB in the beginning and 120.7 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 287.72 ms. Allocated memory is still 138.9 MB. Free memory was 102.0 MB in the beginning and 92.5 MB in the end (delta: 9.6 MB). Peak memory consumption was 9.6 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 115.21 ms. Allocated memory was 138.9 MB in the beginning and 202.4 MB in the end (delta: 63.4 MB). Free memory was 92.5 MB in the beginning and 181.5 MB in the end (delta: -89.1 MB). Peak memory consumption was 15.0 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 26.18 ms. Allocated memory is still 202.4 MB. Free memory was 181.5 MB in the beginning and 179.9 MB in the end (delta: 1.7 MB). Peak memory consumption was 1.7 MB. Max. memory is 7.1 GB. * RCFGBuilder took 250.76 ms. Allocated memory is still 202.4 MB. Free memory was 179.9 MB in the beginning and 168.0 MB in the end (delta: 11.8 MB). Peak memory consumption was 11.8 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1122.66 ms. Allocated memory is still 202.4 MB. Free memory was 168.0 MB in the beginning and 112.2 MB in the end (delta: 55.8 MB). Peak memory consumption was 55.8 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 6]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L14] int i=0, x=0, y=0; [L15] int n=__VERIFIER_nondet_int(); [L16] COND FALSE !(!(n>0)) [L17] i=0 [L17] COND TRUE i