/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/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf -i ../../../trunk/examples/svcomp/ldv-regression/test_while_int.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-3af5e1f [2020-09-04 16:41:04,544 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-04 16:41:04,549 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-04 16:41:04,596 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2020-09-04 16:41:04,657 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-04 16:41:04,658 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-04 16:41:04,659 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-04 16:41:04,660 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2020-09-04 16:41:04,672 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-04 16:41:04,672 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-04 16:41:04,674 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-04 16:41:04,674 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-04 16:41:04,674 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-04 16:41:04,674 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-04 16:41:04,674 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-04 16:41:04,675 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-04 16:41:04,675 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-04 16:41:04,675 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-04 16:41:04,675 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-04 16:41:04,675 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-04 16:41:04,676 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-04 16:41:04,676 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-04 16:41:04,676 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-04 16:41:04,676 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-09-04 16:41:04,677 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-04 16:41:04,677 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-04 16:41:04,677 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-04 16:41:04,677 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-04 16:41:04,677 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-09-04 16:41:04,678 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-04 16:41:04,678 INFO L138 SettingsManager]: * Use separate solver for trace checks=false [2020-09-04 16:41:05,113 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-04 16:41:05,128 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-04 16:41:05,132 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-04 16:41:05,134 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-04 16:41:05,134 INFO L275 PluginConnector]: CDTParser initialized [2020-09-04 16:41:05,135 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-regression/test_while_int.i [2020-09-04 16:41:05,224 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/2d5b6b008/183160c374634a04a37d6b827a71bbb0/FLAGd793f9347 [2020-09-04 16:41:05,734 INFO L306 CDTParser]: Found 1 translation units. [2020-09-04 16:41:05,734 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/ldv-regression/test_while_int.i [2020-09-04 16:41:05,740 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/2d5b6b008/183160c374634a04a37d6b827a71bbb0/FLAGd793f9347 [2020-09-04 16:41:06,101 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/2d5b6b008/183160c374634a04a37d6b827a71bbb0 [2020-09-04 16:41:06,115 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-04 16:41:06,118 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-04 16:41:06,119 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-04 16:41:06,120 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-04 16:41:06,124 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-04 16:41:06,125 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.09 04:41:06" (1/1) ... [2020-09-04 16:41:06,129 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@63cc40f5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 04:41:06, skipping insertion in model container [2020-09-04 16:41:06,129 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.09 04:41:06" (1/1) ... [2020-09-04 16:41:06,138 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-04 16:41:06,163 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-04 16:41:06,376 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-04 16:41:06,382 INFO L203 MainTranslator]: Completed pre-run [2020-09-04 16:41:06,399 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-04 16:41:06,414 INFO L208 MainTranslator]: Completed translation [2020-09-04 16:41:06,415 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 04:41:06 WrapperNode [2020-09-04 16:41:06,415 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-04 16:41:06,416 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-04 16:41:06,416 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-04 16:41:06,416 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-04 16:41:06,429 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 04:41:06" (1/1) ... [2020-09-04 16:41:06,429 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 04:41:06" (1/1) ... [2020-09-04 16:41:06,434 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 04:41:06" (1/1) ... [2020-09-04 16:41:06,434 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 04:41:06" (1/1) ... [2020-09-04 16:41:06,438 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 04:41:06" (1/1) ... [2020-09-04 16:41:06,443 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 04:41:06" (1/1) ... [2020-09-04 16:41:06,444 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 04:41:06" (1/1) ... [2020-09-04 16:41:06,524 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-04 16:41:06,525 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-04 16:41:06,525 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-04 16:41:06,525 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-04 16:41:06,526 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 04:41:06" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/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 [2020-09-04 16:41:06,603 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-04 16:41:06,603 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-04 16:41:06,603 INFO L138 BoogieDeclarations]: Found implementation of procedure __blast_assert [2020-09-04 16:41:06,603 INFO L138 BoogieDeclarations]: Found implementation of procedure check_error [2020-09-04 16:41:06,604 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-04 16:41:06,604 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-04 16:41:06,604 INFO L130 BoogieDeclarations]: Found specification of procedure __blast_assert [2020-09-04 16:41:06,604 INFO L130 BoogieDeclarations]: Found specification of procedure check_error [2020-09-04 16:41:06,610 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-04 16:41:06,610 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-04 16:41:06,610 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-04 16:41:06,799 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-04 16:41:06,799 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-04 16:41:06,804 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.09 04:41:06 BoogieIcfgContainer [2020-09-04 16:41:06,804 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-04 16:41:06,806 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-04 16:41:06,806 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-04 16:41:06,810 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-04 16:41:06,810 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 04.09 04:41:06" (1/3) ... [2020-09-04 16:41:06,811 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2b77df17 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.09 04:41:06, skipping insertion in model container [2020-09-04 16:41:06,811 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 04:41:06" (2/3) ... [2020-09-04 16:41:06,812 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2b77df17 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.09 04:41:06, skipping insertion in model container [2020-09-04 16:41:06,812 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.09 04:41:06" (3/3) ... [2020-09-04 16:41:06,814 INFO L109 eAbstractionObserver]: Analyzing ICFG test_while_int.i [2020-09-04 16:41:06,826 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-04 16:41:06,836 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-04 16:41:06,857 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-04 16:41:06,884 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-04 16:41:06,885 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-04 16:41:06,885 INFO L377 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2020-09-04 16:41:06,885 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-04 16:41:06,885 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-04 16:41:06,886 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-04 16:41:06,886 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-04 16:41:06,886 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-04 16:41:06,903 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states. [2020-09-04 16:41:06,916 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-09-04 16:41:06,916 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 16:41:06,917 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 16:41:06,918 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 16:41:06,926 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 16:41:06,926 INFO L82 PathProgramCache]: Analyzing trace with hash -459927168, now seen corresponding path program 1 times [2020-09-04 16:41:06,938 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 16:41:06,939 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1674580860] [2020-09-04 16:41:06,939 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 16:41:07,021 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 16:41:07,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:41:07,207 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 16:41:07,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:41:07,223 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-04 16:41:07,229 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1674580860] [2020-09-04 16:41:07,237 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 16:41:07,238 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-04 16:41:07,238 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1997161606] [2020-09-04 16:41:07,254 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-04 16:41:07,254 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 16:41:07,287 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-04 16:41:07,289 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-09-04 16:41:07,291 INFO L87 Difference]: Start difference. First operand 24 states. Second operand 7 states. [2020-09-04 16:41:07,469 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 16:41:07,469 INFO L93 Difference]: Finished difference Result 53 states and 65 transitions. [2020-09-04 16:41:07,470 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-09-04 16:41:07,472 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 14 [2020-09-04 16:41:07,473 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 16:41:07,486 INFO L225 Difference]: With dead ends: 53 [2020-09-04 16:41:07,486 INFO L226 Difference]: Without dead ends: 29 [2020-09-04 16:41:07,493 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2020-09-04 16:41:07,514 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2020-09-04 16:41:07,544 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 26. [2020-09-04 16:41:07,545 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2020-09-04 16:41:07,546 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 26 transitions. [2020-09-04 16:41:07,549 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 26 transitions. Word has length 14 [2020-09-04 16:41:07,549 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 16:41:07,549 INFO L479 AbstractCegarLoop]: Abstraction has 26 states and 26 transitions. [2020-09-04 16:41:07,550 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-04 16:41:07,550 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 26 transitions. [2020-09-04 16:41:07,551 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-09-04 16:41:07,551 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 16:41:07,551 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 16:41:07,552 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-04 16:41:07,552 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 16:41:07,553 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 16:41:07,553 INFO L82 PathProgramCache]: Analyzing trace with hash 299235803, now seen corresponding path program 1 times [2020-09-04 16:41:07,553 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 16:41:07,554 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [705883809] [2020-09-04 16:41:07,554 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 16:41:07,580 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 16:41:07,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:41:07,691 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 16:41:07,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:41:07,695 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-09-04 16:41:07,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:41:07,708 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-04 16:41:07,709 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [705883809] [2020-09-04 16:41:07,709 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 16:41:07,709 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-09-04 16:41:07,710 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2141056572] [2020-09-04 16:41:07,711 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-04 16:41:07,711 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 16:41:07,711 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-04 16:41:07,712 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2020-09-04 16:41:07,712 INFO L87 Difference]: Start difference. First operand 26 states and 26 transitions. Second operand 9 states. [2020-09-04 16:41:07,892 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 16:41:07,893 INFO L93 Difference]: Finished difference Result 41 states and 41 transitions. [2020-09-04 16:41:07,893 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-04 16:41:07,893 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 23 [2020-09-04 16:41:07,894 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 16:41:07,895 INFO L225 Difference]: With dead ends: 41 [2020-09-04 16:41:07,895 INFO L226 Difference]: Without dead ends: 38 [2020-09-04 16:41:07,897 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=51, Invalid=131, Unknown=0, NotChecked=0, Total=182 [2020-09-04 16:41:07,898 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2020-09-04 16:41:07,907 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 35. [2020-09-04 16:41:07,907 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2020-09-04 16:41:07,909 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 35 transitions. [2020-09-04 16:41:07,910 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 35 transitions. Word has length 23 [2020-09-04 16:41:07,910 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 16:41:07,910 INFO L479 AbstractCegarLoop]: Abstraction has 35 states and 35 transitions. [2020-09-04 16:41:07,910 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-04 16:41:07,911 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 35 transitions. [2020-09-04 16:41:07,912 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2020-09-04 16:41:07,912 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 16:41:07,912 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 16:41:07,912 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-04 16:41:07,913 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 16:41:07,913 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 16:41:07,913 INFO L82 PathProgramCache]: Analyzing trace with hash -1072281632, now seen corresponding path program 2 times [2020-09-04 16:41:07,914 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 16:41:07,914 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [873251916] [2020-09-04 16:41:07,914 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 16:41:07,927 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 16:41:07,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-04 16:41:07,946 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-09-04 16:41:07,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-04 16:41:07,963 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-09-04 16:41:07,987 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-09-04 16:41:07,987 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-09-04 16:41:07,988 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-04 16:41:08,007 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 04.09 04:41:08 BoogieIcfgContainer [2020-09-04 16:41:08,007 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-04 16:41:08,010 INFO L168 Benchmark]: Toolchain (without parser) took 1891.95 ms. Allocated memory was 137.9 MB in the beginning and 201.9 MB in the end (delta: 64.0 MB). Free memory was 101.3 MB in the beginning and 104.0 MB in the end (delta: -2.7 MB). Peak memory consumption was 61.3 MB. Max. memory is 7.1 GB. [2020-09-04 16:41:08,011 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 137.9 MB. Free memory was 119.2 MB in the beginning and 119.0 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-09-04 16:41:08,012 INFO L168 Benchmark]: CACSL2BoogieTranslator took 296.04 ms. Allocated memory is still 137.9 MB. Free memory was 101.1 MB in the beginning and 91.8 MB in the end (delta: 9.3 MB). Peak memory consumption was 9.3 MB. Max. memory is 7.1 GB. [2020-09-04 16:41:08,013 INFO L168 Benchmark]: Boogie Preprocessor took 108.60 ms. Allocated memory was 137.9 MB in the beginning and 201.9 MB in the end (delta: 64.0 MB). Free memory was 91.8 MB in the beginning and 181.9 MB in the end (delta: -90.1 MB). Peak memory consumption was 14.5 MB. Max. memory is 7.1 GB. [2020-09-04 16:41:08,014 INFO L168 Benchmark]: RCFGBuilder took 279.95 ms. Allocated memory is still 201.9 MB. Free memory was 181.9 MB in the beginning and 170.0 MB in the end (delta: 11.9 MB). Peak memory consumption was 11.9 MB. Max. memory is 7.1 GB. [2020-09-04 16:41:08,015 INFO L168 Benchmark]: TraceAbstraction took 1201.42 ms. Allocated memory is still 201.9 MB. Free memory was 169.3 MB in the beginning and 104.0 MB in the end (delta: 65.3 MB). Peak memory consumption was 65.3 MB. Max. memory is 7.1 GB. [2020-09-04 16:41:08,019 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 137.9 MB. Free memory was 119.2 MB in the beginning and 119.0 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 296.04 ms. Allocated memory is still 137.9 MB. Free memory was 101.1 MB in the beginning and 91.8 MB in the end (delta: 9.3 MB). Peak memory consumption was 9.3 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 108.60 ms. Allocated memory was 137.9 MB in the beginning and 201.9 MB in the end (delta: 64.0 MB). Free memory was 91.8 MB in the beginning and 181.9 MB in the end (delta: -90.1 MB). Peak memory consumption was 14.5 MB. Max. memory is 7.1 GB. * RCFGBuilder took 279.95 ms. Allocated memory is still 201.9 MB. Free memory was 181.9 MB in the beginning and 170.0 MB in the end (delta: 11.9 MB). Peak memory consumption was 11.9 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1201.42 ms. Allocated memory is still 201.9 MB. Free memory was 169.3 MB in the beginning and 104.0 MB in the end (delta: 65.3 MB). Peak memory consumption was 65.3 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: [L23] int i=0; [L24] COND TRUE i<5 [L25] i++ [L29] CALL check_error(i!=3) [L18] (b) ? (0) : __blast_assert () [L29] RET check_error(i!=3) [L24] COND TRUE i<5 [L25] i++ [L29] CALL check_error(i!=3) [L18] (b) ? (0) : __blast_assert () [L29] RET check_error(i!=3) [L24] COND TRUE i<5 [L25] i++ [L29] CALL check_error(i!=3) [L18] (b) ? (0) : __blast_assert () [L18] CALL __blast_assert () [L6] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 24 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 1.1s, OverallIterations: 3, TraceHistogramMax: 3, AutomataDifference: 0.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 29 SDtfs, 25 SDslu, 110 SDs, 0 SdLazy, 80 SolverSat, 12 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 30 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=35occurred in iteration=2, 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, 6 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: No data available, 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...