/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 -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/ldv-regression/test_while_int.c_1.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-72570d3 [2020-08-22 16:47:05,829 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-22 16:47:05,831 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-22 16:47:05,863 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-22 16:47:05,864 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-22 16:47:05,872 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-22 16:47:05,874 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-22 16:47:05,876 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-22 16:47:05,879 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-22 16:47:05,880 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-22 16:47:05,880 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-22 16:47:05,884 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... 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[2020-08-22 16:47:05,928 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-22 16:47:05,929 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-22 16:47:05,930 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-22 16:47:05,931 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 [2020-08-22 16:47:05,971 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-22 16:47:05,972 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-22 16:47:05,973 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-22 16:47:05,973 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-22 16:47:05,974 INFO L138 SettingsManager]: * Use SBE=true [2020-08-22 16:47:05,974 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-22 16:47:05,974 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-22 16:47:05,974 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-22 16:47:05,974 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-22 16:47:05,974 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-22 16:47:05,975 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-22 16:47:05,976 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-22 16:47:05,976 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-22 16:47:05,977 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-22 16:47:05,977 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-22 16:47:05,977 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-22 16:47:05,977 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-22 16:47:05,977 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-22 16:47:05,978 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-22 16:47:05,978 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-22 16:47:05,978 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-22 16:47:05,978 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-22 16:47:05,978 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-22 16:47:05,979 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-22 16:47:05,979 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-22 16:47:05,979 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-22 16:47:05,979 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-22 16:47:05,979 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-22 16:47:05,979 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-22 16:47:05,980 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-08-22 16:47:06,306 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-22 16:47:06,325 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-22 16:47:06,330 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-22 16:47:06,331 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-22 16:47:06,332 INFO L275 PluginConnector]: CDTParser initialized [2020-08-22 16:47:06,332 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-regression/test_while_int.c_1.i [2020-08-22 16:47:06,401 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7c2f65048/8d2a0a63d3b04c959a3e4944f9c99a76/FLAGb9d1b1229 [2020-08-22 16:47:06,809 INFO L306 CDTParser]: Found 1 translation units. [2020-08-22 16:47:06,810 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/ldv-regression/test_while_int.c_1.i [2020-08-22 16:47:06,815 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7c2f65048/8d2a0a63d3b04c959a3e4944f9c99a76/FLAGb9d1b1229 [2020-08-22 16:47:07,223 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7c2f65048/8d2a0a63d3b04c959a3e4944f9c99a76 [2020-08-22 16:47:07,233 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-22 16:47:07,234 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-22 16:47:07,235 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-22 16:47:07,235 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-22 16:47:07,240 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-22 16:47:07,241 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.08 04:47:07" (1/1) ... [2020-08-22 16:47:07,243 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4fc06ef1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:47:07, skipping insertion in model container [2020-08-22 16:47:07,243 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.08 04:47:07" (1/1) ... [2020-08-22 16:47:07,251 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-22 16:47:07,266 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-22 16:47:07,410 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-22 16:47:07,413 INFO L203 MainTranslator]: Completed pre-run [2020-08-22 16:47:07,427 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-22 16:47:07,439 INFO L208 MainTranslator]: Completed translation [2020-08-22 16:47:07,440 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:47:07 WrapperNode [2020-08-22 16:47:07,440 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-22 16:47:07,440 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-22 16:47:07,441 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-22 16:47:07,441 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-22 16:47:07,450 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:47:07" (1/1) ... [2020-08-22 16:47:07,450 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:47:07" (1/1) ... [2020-08-22 16:47:07,454 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:47:07" (1/1) ... [2020-08-22 16:47:07,455 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:47:07" (1/1) ... [2020-08-22 16:47:07,544 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:47:07" (1/1) ... [2020-08-22 16:47:07,550 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:47:07" (1/1) ... [2020-08-22 16:47:07,550 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:47:07" (1/1) ... [2020-08-22 16:47:07,552 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-22 16:47:07,553 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-22 16:47:07,553 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-22 16:47:07,553 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-22 16:47:07,554 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:47:07" (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 [2020-08-22 16:47:07,610 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-22 16:47:07,611 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-22 16:47:07,611 INFO L138 BoogieDeclarations]: Found implementation of procedure __blast_assert [2020-08-22 16:47:07,611 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-22 16:47:07,611 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-22 16:47:07,611 INFO L130 BoogieDeclarations]: Found specification of procedure __blast_assert [2020-08-22 16:47:07,611 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-22 16:47:07,611 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-22 16:47:07,611 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-22 16:47:07,751 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-22 16:47:07,751 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-08-22 16:47:07,754 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.08 04:47:07 BoogieIcfgContainer [2020-08-22 16:47:07,754 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-22 16:47:07,755 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-22 16:47:07,755 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-22 16:47:07,758 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-22 16:47:07,759 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.08 04:47:07" (1/3) ... [2020-08-22 16:47:07,759 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1d9932b4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.08 04:47:07, skipping insertion in model container [2020-08-22 16:47:07,760 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:47:07" (2/3) ... [2020-08-22 16:47:07,760 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1d9932b4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.08 04:47:07, skipping insertion in model container [2020-08-22 16:47:07,760 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.08 04:47:07" (3/3) ... [2020-08-22 16:47:07,762 INFO L109 eAbstractionObserver]: Analyzing ICFG test_while_int.c_1.i [2020-08-22 16:47:07,770 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-08-22 16:47:07,777 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-22 16:47:07,789 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-22 16:47:07,809 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-22 16:47:07,809 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-22 16:47:07,809 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-08-22 16:47:07,809 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-22 16:47:07,809 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-22 16:47:07,809 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-22 16:47:07,810 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-22 16:47:07,810 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-22 16:47:07,824 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states. [2020-08-22 16:47:07,829 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-08-22 16:47:07,829 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 16:47:07,830 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 16:47:07,830 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 16:47:07,835 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 16:47:07,835 INFO L82 PathProgramCache]: Analyzing trace with hash 676687463, now seen corresponding path program 1 times [2020-08-22 16:47:07,843 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-08-22 16:47:07,843 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [758221595] [2020-08-22 16:47:07,844 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 16:47:07,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:47:08,042 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 16:47:08,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:47:08,049 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 16:47:08,049 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [758221595] [2020-08-22 16:47:08,050 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 16:47:08,050 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-22 16:47:08,051 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1700556206] [2020-08-22 16:47:08,058 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-22 16:47:08,058 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-08-22 16:47:08,086 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-22 16:47:08,087 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-08-22 16:47:08,095 INFO L87 Difference]: Start difference. First operand 17 states. Second operand 4 states. [2020-08-22 16:47:08,163 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 16:47:08,163 INFO L93 Difference]: Finished difference Result 30 states and 40 transitions. [2020-08-22 16:47:08,164 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-08-22 16:47:08,166 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 9 [2020-08-22 16:47:08,166 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 16:47:08,173 INFO L225 Difference]: With dead ends: 30 [2020-08-22 16:47:08,174 INFO L226 Difference]: Without dead ends: 13 [2020-08-22 16:47:08,177 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-08-22 16:47:08,190 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2020-08-22 16:47:08,204 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 12. [2020-08-22 16:47:08,205 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2020-08-22 16:47:08,206 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 12 transitions. [2020-08-22 16:47:08,208 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 12 transitions. Word has length 9 [2020-08-22 16:47:08,208 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 16:47:08,208 INFO L479 AbstractCegarLoop]: Abstraction has 12 states and 12 transitions. [2020-08-22 16:47:08,208 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-22 16:47:08,208 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 12 transitions. [2020-08-22 16:47:08,209 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-08-22 16:47:08,209 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 16:47:08,209 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 16:47:08,210 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-22 16:47:08,210 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 16:47:08,210 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 16:47:08,210 INFO L82 PathProgramCache]: Analyzing trace with hash 1754257002, now seen corresponding path program 1 times [2020-08-22 16:47:08,211 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-08-22 16:47:08,211 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1522854845] [2020-08-22 16:47:08,211 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 16:47:08,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:47:08,263 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 16:47:08,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:47:08,267 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 16:47:08,268 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1522854845] [2020-08-22 16:47:08,268 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1048003644] [2020-08-22 16:47:08,269 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-08-22 16:47:08,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:47:08,302 INFO L263 TraceCheckSpWp]: Trace formula consists of 25 conjuncts, 4 conjunts are in the unsatisfiable core [2020-08-22 16:47:08,307 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-08-22 16:47:08,368 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 16:47:08,368 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-08-22 16:47:08,369 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 5 [2020-08-22 16:47:08,370 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [44594725] [2020-08-22 16:47:08,371 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-22 16:47:08,371 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-08-22 16:47:08,371 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-22 16:47:08,372 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2020-08-22 16:47:08,372 INFO L87 Difference]: Start difference. First operand 12 states and 12 transitions. Second operand 5 states. [2020-08-22 16:47:08,400 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 16:47:08,401 INFO L93 Difference]: Finished difference Result 18 states and 18 transitions. [2020-08-22 16:47:08,401 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-22 16:47:08,401 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 11 [2020-08-22 16:47:08,402 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 16:47:08,402 INFO L225 Difference]: With dead ends: 18 [2020-08-22 16:47:08,403 INFO L226 Difference]: Without dead ends: 15 [2020-08-22 16:47:08,404 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2020-08-22 16:47:08,404 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2020-08-22 16:47:08,408 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 14. [2020-08-22 16:47:08,408 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2020-08-22 16:47:08,409 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 14 transitions. [2020-08-22 16:47:08,409 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 14 transitions. Word has length 11 [2020-08-22 16:47:08,409 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 16:47:08,409 INFO L479 AbstractCegarLoop]: Abstraction has 14 states and 14 transitions. [2020-08-22 16:47:08,410 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-22 16:47:08,410 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 14 transitions. [2020-08-22 16:47:08,411 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-08-22 16:47:08,411 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 16:47:08,411 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 16:47:08,625 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2020-08-22 16:47:08,626 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 16:47:08,627 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 16:47:08,627 INFO L82 PathProgramCache]: Analyzing trace with hash -2083501651, now seen corresponding path program 2 times [2020-08-22 16:47:08,627 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-08-22 16:47:08,628 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1526625034] [2020-08-22 16:47:08,628 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 16:47:08,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-22 16:47:08,639 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-08-22 16:47:08,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-22 16:47:08,647 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-08-22 16:47:08,659 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-08-22 16:47:08,660 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-08-22 16:47:08,660 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-22 16:47:08,677 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.08 04:47:08 BoogieIcfgContainer [2020-08-22 16:47:08,677 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-22 16:47:08,680 INFO L168 Benchmark]: Toolchain (without parser) took 1445.09 ms. Allocated memory was 147.8 MB in the beginning and 203.9 MB in the end (delta: 56.1 MB). Free memory was 103.8 MB in the beginning and 132.4 MB in the end (delta: -28.6 MB). Peak memory consumption was 27.5 MB. Max. memory is 7.1 GB. [2020-08-22 16:47:08,681 INFO L168 Benchmark]: CDTParser took 0.17 ms. Allocated memory is still 147.8 MB. Free memory was 122.5 MB in the beginning and 122.3 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-08-22 16:47:08,682 INFO L168 Benchmark]: CACSL2BoogieTranslator took 204.89 ms. Allocated memory is still 147.8 MB. Free memory was 103.6 MB in the beginning and 94.4 MB in the end (delta: 9.2 MB). Peak memory consumption was 9.2 MB. Max. memory is 7.1 GB. [2020-08-22 16:47:08,683 INFO L168 Benchmark]: Boogie Preprocessor took 111.91 ms. Allocated memory was 147.8 MB in the beginning and 203.9 MB in the end (delta: 56.1 MB). Free memory was 94.4 MB in the beginning and 183.1 MB in the end (delta: -88.7 MB). Peak memory consumption was 10.4 MB. Max. memory is 7.1 GB. [2020-08-22 16:47:08,684 INFO L168 Benchmark]: RCFGBuilder took 201.57 ms. Allocated memory is still 203.9 MB. Free memory was 183.1 MB in the beginning and 172.2 MB in the end (delta: 10.9 MB). Peak memory consumption was 10.9 MB. Max. memory is 7.1 GB. [2020-08-22 16:47:08,685 INFO L168 Benchmark]: TraceAbstraction took 922.12 ms. Allocated memory is still 203.9 MB. Free memory was 171.5 MB in the beginning and 132.4 MB in the end (delta: 39.1 MB). Peak memory consumption was 39.1 MB. Max. memory is 7.1 GB. [2020-08-22 16:47:08,689 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17 ms. Allocated memory is still 147.8 MB. Free memory was 122.5 MB in the beginning and 122.3 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 204.89 ms. Allocated memory is still 147.8 MB. Free memory was 103.6 MB in the beginning and 94.4 MB in the end (delta: 9.2 MB). Peak memory consumption was 9.2 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 111.91 ms. Allocated memory was 147.8 MB in the beginning and 203.9 MB in the end (delta: 56.1 MB). Free memory was 94.4 MB in the beginning and 183.1 MB in the end (delta: -88.7 MB). Peak memory consumption was 10.4 MB. Max. memory is 7.1 GB. * RCFGBuilder took 201.57 ms. Allocated memory is still 203.9 MB. Free memory was 183.1 MB in the beginning and 172.2 MB in the end (delta: 10.9 MB). Peak memory consumption was 10.9 MB. Max. memory is 7.1 GB. * TraceAbstraction took 922.12 ms. Allocated memory is still 203.9 MB. Free memory was 171.5 MB in the beginning and 132.4 MB in the end (delta: 39.1 MB). Peak memory consumption was 39.1 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: [L12] int i=0; VAL [i=0] [L13] COND TRUE i<5 [L14] i++ VAL [i=1] [L16] (i!=3) ? (0) : __blast_assert () VAL [i=1] [L13] COND TRUE i<5 [L14] i++ VAL [i=2] [L16] (i!=3) ? (0) : __blast_assert () VAL [i=2] [L13] COND TRUE i<5 [L14] i++ VAL [i=3] [L16] (i!=3) ? (0) : __blast_assert () VAL [i=3] [L16] CALL __blast_assert () [L6] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 17 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 0.8s, OverallIterations: 3, TraceHistogramMax: 3, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 21 SDtfs, 3 SDslu, 38 SDs, 0 SdLazy, 21 SolverSat, 4 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 23 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=17occurred 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, 2 MinimizatonAttempts, 2 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 44 NumberOfCodeBlocks, 44 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 28 ConstructedInterpolants, 0 QuantifiedInterpolants, 456 SizeOfPredicates, 1 NumberOfNonLiveVariables, 25 ConjunctsInSsa, 4 ConjunctsInUnsatCore, 3 InterpolantComputations, 1 PerfectInterpolantSequences, 0/4 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...