/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/AutomizerC.xml --traceabstraction.assert.codeblocks.term.scoring.heuristic DAGSIZE --traceabstraction.assert.codeblocks.term.scoring.heuristic.partitioning.strategy FIXED_NUM_PARTITIONS --traceabstraction.assert.codeblocks.term.scoring.heuristic.number.of.partitions 4 --traceabstraction.trace.refinement.strategy CAMEL_SMT_AM -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/loops/terminator_03-1.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-79ed534 [2020-07-20 03:58:50,152 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-20 03:58:50,155 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-20 03:58:50,172 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-20 03:58:50,173 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-20 03:58:50,175 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-20 03:58:50,176 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-20 03:58:50,189 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-20 03:58:50,191 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-20 03:58:50,193 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-20 03:58:50,194 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-20 03:58:50,196 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-20 03:58:50,196 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-20 03:58:50,198 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-20 03:58:50,199 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-20 03:58:50,202 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-20 03:58:50,202 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-20 03:58:50,203 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-20 03:58:50,207 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-20 03:58:50,211 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-20 03:58:50,214 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-20 03:58:50,216 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-20 03:58:50,217 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-20 03:58:50,219 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-20 03:58:50,222 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-07-20 03:58:50,235 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-20 03:58:50,236 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-20 03:58:50,237 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-20 03:58:50,238 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 [2020-07-20 03:58:50,263 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-20 03:58:50,263 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-20 03:58:50,265 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-20 03:58:50,265 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-20 03:58:50,266 INFO L138 SettingsManager]: * Use SBE=true [2020-07-20 03:58:50,266 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-20 03:58:50,266 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-20 03:58:50,266 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-20 03:58:50,266 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-20 03:58:50,267 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-20 03:58:50,268 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-20 03:58:50,268 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-20 03:58:50,268 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-20 03:58:50,269 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-20 03:58:50,269 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-20 03:58:50,269 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-20 03:58:50,269 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-20 03:58:50,269 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-20 03:58:50,270 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-20 03:58:50,270 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-20 03:58:50,270 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-20 03:58:50,270 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-20 03:58:50,270 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-20 03:58:50,270 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-07-20 03:58:50,271 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-07-20 03:58:50,271 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-07-20 03:58:50,271 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 03:58:50,271 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-20 03:58:50,271 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-07-20 03:58:50,272 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks Term Scoring Heuristic -> DAGSIZE Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks Term Scoring Heuristic Partitioning Strategy -> FIXED_NUM_PARTITIONS Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks Term Scoring Heuristic number of partitions -> 4 Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> CAMEL_SMT_AM [2020-07-20 03:58:50,568 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-20 03:58:50,581 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-20 03:58:50,584 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-20 03:58:50,586 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-20 03:58:50,586 INFO L275 PluginConnector]: CDTParser initialized [2020-07-20 03:58:50,587 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loops/terminator_03-1.c [2020-07-20 03:58:50,659 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/12545af77/73183699fa6f4ca89a73c65b298d116a/FLAGd42a4f734 [2020-07-20 03:58:51,087 INFO L306 CDTParser]: Found 1 translation units. [2020-07-20 03:58:51,088 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loops/terminator_03-1.c [2020-07-20 03:58:51,094 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/12545af77/73183699fa6f4ca89a73c65b298d116a/FLAGd42a4f734 [2020-07-20 03:58:51,437 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/12545af77/73183699fa6f4ca89a73c65b298d116a [2020-07-20 03:58:51,445 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-20 03:58:51,448 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-20 03:58:51,449 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-20 03:58:51,450 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-20 03:58:51,453 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-20 03:58:51,454 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.07 03:58:51" (1/1) ... [2020-07-20 03:58:51,457 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@44cb9560 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 03:58:51, skipping insertion in model container [2020-07-20 03:58:51,457 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.07 03:58:51" (1/1) ... [2020-07-20 03:58:51,465 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-20 03:58:51,483 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-20 03:58:51,641 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-20 03:58:51,645 INFO L203 MainTranslator]: Completed pre-run [2020-07-20 03:58:51,661 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-20 03:58:51,675 INFO L208 MainTranslator]: Completed translation [2020-07-20 03:58:51,675 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 03:58:51 WrapperNode [2020-07-20 03:58:51,676 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-20 03:58:51,676 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-20 03:58:51,677 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-20 03:58:51,677 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-20 03:58:51,690 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 03:58:51" (1/1) ... [2020-07-20 03:58:51,690 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 03:58:51" (1/1) ... [2020-07-20 03:58:51,694 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 03:58:51" (1/1) ... [2020-07-20 03:58:51,694 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 03:58:51" (1/1) ... [2020-07-20 03:58:51,697 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 03:58:51" (1/1) ... [2020-07-20 03:58:51,702 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 03:58:51" (1/1) ... [2020-07-20 03:58:51,703 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 03:58:51" (1/1) ... [2020-07-20 03:58:51,784 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-20 03:58:51,785 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-20 03:58:51,785 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-20 03:58:51,785 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-20 03:58:51,788 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 03:58:51" (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 [2020-07-20 03:58:51,846 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-20 03:58:51,847 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-20 03:58:51,847 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-07-20 03:58:51,847 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-20 03:58:51,847 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-20 03:58:51,847 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-07-20 03:58:51,847 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-07-20 03:58:51,848 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-20 03:58:51,848 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-20 03:58:51,848 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-20 03:58:52,003 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-20 03:58:52,003 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-07-20 03:58:52,006 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.07 03:58:52 BoogieIcfgContainer [2020-07-20 03:58:52,007 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-20 03:58:52,008 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-20 03:58:52,008 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-20 03:58:52,011 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-20 03:58:52,011 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.07 03:58:51" (1/3) ... [2020-07-20 03:58:52,012 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@767de17e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.07 03:58:52, skipping insertion in model container [2020-07-20 03:58:52,012 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 03:58:51" (2/3) ... [2020-07-20 03:58:52,013 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@767de17e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.07 03:58:52, skipping insertion in model container [2020-07-20 03:58:52,013 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.07 03:58:52" (3/3) ... [2020-07-20 03:58:52,015 INFO L109 eAbstractionObserver]: Analyzing ICFG terminator_03-1.c [2020-07-20 03:58:52,025 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-07-20 03:58:52,032 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-20 03:58:52,045 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-20 03:58:52,067 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-20 03:58:52,067 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-20 03:58:52,067 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-07-20 03:58:52,067 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-20 03:58:52,068 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-20 03:58:52,068 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-20 03:58:52,068 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-20 03:58:52,068 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-20 03:58:52,082 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states. [2020-07-20 03:58:52,086 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-07-20 03:58:52,087 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 03:58:52,087 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 03:58:52,088 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 03:58:52,094 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 03:58:52,094 INFO L82 PathProgramCache]: Analyzing trace with hash 1712329921, now seen corresponding path program 1 times [2020-07-20 03:58:52,103 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 03:58:52,104 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1117794178] [2020-07-20 03:58:52,104 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@dcd16d0 [2020-07-20 03:58:52,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 03:58:52,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 03:58:52,294 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 03:58:52,294 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1117794178] [2020-07-20 03:58:52,295 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 03:58:52,296 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-07-20 03:58:52,296 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1926370849] [2020-07-20 03:58:52,302 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-07-20 03:58:52,302 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 03:58:52,326 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-07-20 03:58:52,327 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-07-20 03:58:52,330 INFO L87 Difference]: Start difference. First operand 19 states. Second operand 5 states. [2020-07-20 03:58:52,407 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 03:58:52,408 INFO L93 Difference]: Finished difference Result 39 states and 45 transitions. [2020-07-20 03:58:52,409 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-07-20 03:58:52,410 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 10 [2020-07-20 03:58:52,411 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 03:58:52,418 INFO L225 Difference]: With dead ends: 39 [2020-07-20 03:58:52,418 INFO L226 Difference]: Without dead ends: 12 [2020-07-20 03:58:52,422 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-07-20 03:58:52,448 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states. [2020-07-20 03:58:52,466 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 12. [2020-07-20 03:58:52,467 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2020-07-20 03:58:52,469 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 12 transitions. [2020-07-20 03:58:52,471 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 12 transitions. Word has length 10 [2020-07-20 03:58:52,471 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 03:58:52,471 INFO L479 AbstractCegarLoop]: Abstraction has 12 states and 12 transitions. [2020-07-20 03:58:52,471 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-07-20 03:58:52,472 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 12 transitions. [2020-07-20 03:58:52,474 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-07-20 03:58:52,475 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 03:58:52,475 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 03:58:52,475 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-07-20 03:58:52,476 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 03:58:52,476 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 03:58:52,477 INFO L82 PathProgramCache]: Analyzing trace with hash 1117320769, now seen corresponding path program 1 times [2020-07-20 03:58:52,477 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 03:58:52,478 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1334276683] [2020-07-20 03:58:52,478 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@dcd16d0 [2020-07-20 03:58:52,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-20 03:58:52,509 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-07-20 03:58:52,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-20 03:58:52,520 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-07-20 03:58:52,535 INFO L174 FreeRefinementEngine]: Strategy CAMEL_SMT_AM found a feasible trace [2020-07-20 03:58:52,535 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-07-20 03:58:52,536 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-07-20 03:58:52,553 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.07 03:58:52 BoogieIcfgContainer [2020-07-20 03:58:52,553 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-20 03:58:52,564 INFO L168 Benchmark]: Toolchain (without parser) took 1108.52 ms. Allocated memory was 140.5 MB in the beginning and 202.9 MB in the end (delta: 62.4 MB). Free memory was 103.7 MB in the beginning and 142.0 MB in the end (delta: -38.3 MB). Peak memory consumption was 24.1 MB. Max. memory is 7.1 GB. [2020-07-20 03:58:52,564 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 140.5 MB. Free memory is still 122.0 MB. There was no memory consumed. Max. memory is 7.1 GB. [2020-07-20 03:58:52,565 INFO L168 Benchmark]: CACSL2BoogieTranslator took 226.82 ms. Allocated memory is still 140.5 MB. Free memory was 103.3 MB in the beginning and 94.1 MB in the end (delta: 9.2 MB). Peak memory consumption was 9.2 MB. Max. memory is 7.1 GB. [2020-07-20 03:58:52,566 INFO L168 Benchmark]: Boogie Preprocessor took 107.92 ms. Allocated memory was 140.5 MB in the beginning and 202.9 MB in the end (delta: 62.4 MB). Free memory was 94.1 MB in the beginning and 182.7 MB in the end (delta: -88.7 MB). Peak memory consumption was 14.9 MB. Max. memory is 7.1 GB. [2020-07-20 03:58:52,567 INFO L168 Benchmark]: RCFGBuilder took 221.99 ms. Allocated memory is still 202.9 MB. Free memory was 182.7 MB in the beginning and 171.3 MB in the end (delta: 11.5 MB). Peak memory consumption was 11.5 MB. Max. memory is 7.1 GB. [2020-07-20 03:58:52,568 INFO L168 Benchmark]: TraceAbstraction took 545.11 ms. Allocated memory is still 202.9 MB. Free memory was 170.4 MB in the beginning and 142.0 MB in the end (delta: 28.3 MB). Peak memory consumption was 28.3 MB. Max. memory is 7.1 GB. [2020-07-20 03:58:52,572 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 140.5 MB. Free memory is still 122.0 MB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 226.82 ms. Allocated memory is still 140.5 MB. Free memory was 103.3 MB in the beginning and 94.1 MB in the end (delta: 9.2 MB). Peak memory consumption was 9.2 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 107.92 ms. Allocated memory was 140.5 MB in the beginning and 202.9 MB in the end (delta: 62.4 MB). Free memory was 94.1 MB in the beginning and 182.7 MB in the end (delta: -88.7 MB). Peak memory consumption was 14.9 MB. Max. memory is 7.1 GB. * RCFGBuilder took 221.99 ms. Allocated memory is still 202.9 MB. Free memory was 182.7 MB in the beginning and 171.3 MB in the end (delta: 11.5 MB). Peak memory consumption was 11.5 MB. Max. memory is 7.1 GB. * TraceAbstraction took 545.11 ms. Allocated memory is still 202.9 MB. Free memory was 170.4 MB in the beginning and 142.0 MB in the end (delta: 28.3 MB). Peak memory consumption was 28.3 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 5]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L13] int x=__VERIFIER_nondet_int(); [L14] int y=__VERIFIER_nondet_int(); [L16] COND TRUE y>0 VAL [x=100, y=1] [L18] COND FALSE !(x<100) VAL [x=100, y=1] [L23] CALL __VERIFIER_assert(y<=0 || (y<0 && x>=100)) VAL [\old(cond)=0] [L4] COND TRUE !(cond) VAL [\old(cond)=0, cond=0] [L5] __VERIFIER_error() VAL [\old(cond)=0, cond=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 19 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 0.4s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 18 SDtfs, 8 SDslu, 48 SDs, 0 SdLazy, 14 SolverSat, 1 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=19occurred 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, 21 NumberOfCodeBlocks, 21 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 9 ConstructedInterpolants, 0 QuantifiedInterpolants, 153 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...