/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/1_3.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-72570d3 [2020-08-22 19:04:16,592 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-22 19:04:16,594 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-22 19:04:16,618 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2020-08-22 19:04:16,627 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-22 19:04:16,628 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-22 19:04:16,629 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-22 19:04:16,630 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-22 19:04:16,631 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-22 19:04:16,632 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-22 19:04:16,633 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-22 19:04:16,635 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-22 19:04:16,637 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-22 19:04:16,637 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-22 19:04:16,638 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-22 19:04:16,639 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-22 19:04:16,642 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-08-22 19:04:16,649 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-22 19:04:16,649 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-22 19:04:16,650 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-22 19:04:16,651 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2020-08-22 19:04:16,660 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-22 19:04:16,660 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-22 19:04:16,662 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-22 19:04:16,662 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-22 19:04:16,662 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-22 19:04:16,662 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-22 19:04:16,662 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-22 19:04:16,663 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-22 19:04:16,663 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-22 19:04:16,663 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-22 19:04:16,663 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-22 19:04:16,663 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-22 19:04:16,664 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-22 19:04:16,664 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-22 19:04:16,664 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-22 19:04:16,664 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-08-22 19:04:16,664 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-22 19:04:16,664 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-22 19:04:16,665 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-22 19:04:16,665 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-22 19:04:16,665 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-08-22 19:04:16,665 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-22 19:04:16,665 INFO L138 SettingsManager]: * Use separate solver for trace checks=false [2020-08-22 19:04:16,979 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-22 19:04:16,990 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-22 19:04:16,993 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-22 19:04:16,995 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-22 19:04:16,995 INFO L275 PluginConnector]: CDTParser initialized [2020-08-22 19:04:16,996 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-regression/1_3.i [2020-08-22 19:04:17,061 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/04221b46d/57a5a1dca4b14d3ab596f74d008051ea/FLAG79a24fadb [2020-08-22 19:04:17,513 INFO L306 CDTParser]: Found 1 translation units. [2020-08-22 19:04:17,513 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/ldv-regression/1_3.i [2020-08-22 19:04:17,520 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/04221b46d/57a5a1dca4b14d3ab596f74d008051ea/FLAG79a24fadb [2020-08-22 19:04:17,889 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/04221b46d/57a5a1dca4b14d3ab596f74d008051ea [2020-08-22 19:04:17,900 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-22 19:04:17,902 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-22 19:04:17,904 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-22 19:04:17,904 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-22 19:04:17,908 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-22 19:04:17,909 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.08 07:04:17" (1/1) ... [2020-08-22 19:04:17,912 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@26e0e10f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 07:04:17, skipping insertion in model container [2020-08-22 19:04:17,912 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.08 07:04:17" (1/1) ... [2020-08-22 19:04:17,920 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-22 19:04:17,938 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-22 19:04:18,111 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-22 19:04:18,121 INFO L203 MainTranslator]: Completed pre-run [2020-08-22 19:04:18,138 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-22 19:04:18,154 INFO L208 MainTranslator]: Completed translation [2020-08-22 19:04:18,154 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 07:04:18 WrapperNode [2020-08-22 19:04:18,154 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-22 19:04:18,155 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-22 19:04:18,155 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-22 19:04:18,155 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-22 19:04:18,250 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 07:04:18" (1/1) ... [2020-08-22 19:04:18,251 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 07:04:18" (1/1) ... [2020-08-22 19:04:18,260 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 07:04:18" (1/1) ... [2020-08-22 19:04:18,260 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 07:04:18" (1/1) ... [2020-08-22 19:04:18,271 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 07:04:18" (1/1) ... [2020-08-22 19:04:18,273 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 07:04:18" (1/1) ... [2020-08-22 19:04:18,275 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 07:04:18" (1/1) ... [2020-08-22 19:04:18,282 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-22 19:04:18,283 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-22 19:04:18,283 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-22 19:04:18,283 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-22 19:04:18,286 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 07:04:18" (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 19:04:18,348 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-22 19:04:18,348 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-22 19:04:18,349 INFO L138 BoogieDeclarations]: Found implementation of procedure __blast_assert [2020-08-22 19:04:18,349 INFO L138 BoogieDeclarations]: Found implementation of procedure getrr [2020-08-22 19:04:18,349 INFO L138 BoogieDeclarations]: Found implementation of procedure getPtr [2020-08-22 19:04:18,349 INFO L138 BoogieDeclarations]: Found implementation of procedure freePtr [2020-08-22 19:04:18,349 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-22 19:04:18,349 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-22 19:04:18,349 INFO L130 BoogieDeclarations]: Found specification of procedure __blast_assert [2020-08-22 19:04:18,349 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-22 19:04:18,349 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-22 19:04:18,350 INFO L130 BoogieDeclarations]: Found specification of procedure getrr [2020-08-22 19:04:18,350 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-22 19:04:18,350 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-22 19:04:18,350 INFO L130 BoogieDeclarations]: Found specification of procedure getPtr [2020-08-22 19:04:18,350 INFO L130 BoogieDeclarations]: Found specification of procedure freePtr [2020-08-22 19:04:18,350 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-22 19:04:18,350 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-22 19:04:18,351 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-22 19:04:18,351 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-22 19:04:18,351 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-22 19:04:18,622 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-22 19:04:18,623 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-08-22 19:04:18,626 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.08 07:04:18 BoogieIcfgContainer [2020-08-22 19:04:18,626 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-22 19:04:18,630 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-22 19:04:18,630 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-22 19:04:18,635 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-22 19:04:18,635 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.08 07:04:17" (1/3) ... [2020-08-22 19:04:18,636 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@12d32315 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.08 07:04:18, skipping insertion in model container [2020-08-22 19:04:18,636 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 07:04:18" (2/3) ... [2020-08-22 19:04:18,637 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@12d32315 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.08 07:04:18, skipping insertion in model container [2020-08-22 19:04:18,637 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.08 07:04:18" (3/3) ... [2020-08-22 19:04:18,640 INFO L109 eAbstractionObserver]: Analyzing ICFG 1_3.i [2020-08-22 19:04:18,650 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-22 19:04:18,657 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-22 19:04:18,671 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-22 19:04:18,689 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-22 19:04:18,689 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-22 19:04:18,689 INFO L377 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2020-08-22 19:04:18,689 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-22 19:04:18,689 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-22 19:04:18,690 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-22 19:04:18,690 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-22 19:04:18,690 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-22 19:04:18,703 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states. [2020-08-22 19:04:18,712 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-08-22 19:04:18,712 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 19:04:18,713 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 19:04:18,714 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 19:04:18,718 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 19:04:18,719 INFO L82 PathProgramCache]: Analyzing trace with hash 538172514, now seen corresponding path program 1 times [2020-08-22 19:04:18,727 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 19:04:18,727 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [606496154] [2020-08-22 19:04:18,728 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 19:04:18,795 INFO L288 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-08-22 19:04:18,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:04:19,013 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 19:04:19,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:04:19,050 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-08-22 19:04:19,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:04:19,117 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 19:04:19,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:04:19,142 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 19:04:19,145 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [606496154] [2020-08-22 19:04:19,147 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 19:04:19,147 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-08-22 19:04:19,148 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [18966221] [2020-08-22 19:04:19,153 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-08-22 19:04:19,154 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 19:04:19,168 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-08-22 19:04:19,169 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2020-08-22 19:04:19,172 INFO L87 Difference]: Start difference. First operand 43 states. Second operand 11 states. [2020-08-22 19:04:19,612 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 19:04:19,613 INFO L93 Difference]: Finished difference Result 64 states and 69 transitions. [2020-08-22 19:04:19,613 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-08-22 19:04:19,615 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 30 [2020-08-22 19:04:19,616 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 19:04:19,625 INFO L225 Difference]: With dead ends: 64 [2020-08-22 19:04:19,625 INFO L226 Difference]: Without dead ends: 39 [2020-08-22 19:04:19,630 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=62, Invalid=244, Unknown=0, NotChecked=0, Total=306 [2020-08-22 19:04:19,649 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2020-08-22 19:04:19,677 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 39. [2020-08-22 19:04:19,678 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2020-08-22 19:04:19,679 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 38 transitions. [2020-08-22 19:04:19,682 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 38 transitions. Word has length 30 [2020-08-22 19:04:19,682 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 19:04:19,682 INFO L479 AbstractCegarLoop]: Abstraction has 39 states and 38 transitions. [2020-08-22 19:04:19,682 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-08-22 19:04:19,683 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 38 transitions. [2020-08-22 19:04:19,684 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2020-08-22 19:04:19,684 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 19:04:19,685 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 19:04:19,685 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-22 19:04:19,685 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 19:04:19,686 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 19:04:19,686 INFO L82 PathProgramCache]: Analyzing trace with hash 1533664090, now seen corresponding path program 1 times [2020-08-22 19:04:19,686 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 19:04:19,687 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2033902630] [2020-08-22 19:04:19,687 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 19:04:19,689 INFO L288 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-08-22 19:04:19,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-22 19:04:19,711 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-08-22 19:04:19,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-22 19:04:19,731 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-08-22 19:04:19,772 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-08-22 19:04:19,772 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-08-22 19:04:19,774 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-22 19:04:19,791 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.08 07:04:19 BoogieIcfgContainer [2020-08-22 19:04:19,791 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-22 19:04:19,794 INFO L168 Benchmark]: Toolchain (without parser) took 1891.39 ms. Allocated memory was 148.9 MB in the beginning and 232.8 MB in the end (delta: 83.9 MB). Free memory was 106.2 MB in the beginning and 184.8 MB in the end (delta: -78.6 MB). Peak memory consumption was 5.3 MB. Max. memory is 7.1 GB. [2020-08-22 19:04:19,795 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 148.9 MB. Free memory was 124.6 MB in the beginning and 124.4 MB in the end (delta: 209.8 kB). Peak memory consumption was 209.8 kB. Max. memory is 7.1 GB. [2020-08-22 19:04:19,796 INFO L168 Benchmark]: CACSL2BoogieTranslator took 250.84 ms. Allocated memory is still 148.9 MB. Free memory was 105.8 MB in the beginning and 96.0 MB in the end (delta: 9.7 MB). Peak memory consumption was 9.7 MB. Max. memory is 7.1 GB. [2020-08-22 19:04:19,797 INFO L168 Benchmark]: Boogie Preprocessor took 127.65 ms. Allocated memory was 148.9 MB in the beginning and 203.4 MB in the end (delta: 54.5 MB). Free memory was 96.0 MB in the beginning and 181.5 MB in the end (delta: -85.5 MB). Peak memory consumption was 10.1 MB. Max. memory is 7.1 GB. [2020-08-22 19:04:19,798 INFO L168 Benchmark]: RCFGBuilder took 343.55 ms. Allocated memory is still 203.4 MB. Free memory was 180.8 MB in the beginning and 165.5 MB in the end (delta: 15.3 MB). Peak memory consumption was 15.3 MB. Max. memory is 7.1 GB. [2020-08-22 19:04:19,799 INFO L168 Benchmark]: TraceAbstraction took 1161.21 ms. Allocated memory was 203.4 MB in the beginning and 232.8 MB in the end (delta: 29.4 MB). Free memory was 164.9 MB in the beginning and 184.8 MB in the end (delta: -19.9 MB). Peak memory consumption was 9.4 MB. Max. memory is 7.1 GB. [2020-08-22 19:04:19,803 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 148.9 MB. Free memory was 124.6 MB in the beginning and 124.4 MB in the end (delta: 209.8 kB). Peak memory consumption was 209.8 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 250.84 ms. Allocated memory is still 148.9 MB. Free memory was 105.8 MB in the beginning and 96.0 MB in the end (delta: 9.7 MB). Peak memory consumption was 9.7 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 127.65 ms. Allocated memory was 148.9 MB in the beginning and 203.4 MB in the end (delta: 54.5 MB). Free memory was 96.0 MB in the beginning and 181.5 MB in the end (delta: -85.5 MB). Peak memory consumption was 10.1 MB. Max. memory is 7.1 GB. * RCFGBuilder took 343.55 ms. Allocated memory is still 203.4 MB. Free memory was 180.8 MB in the beginning and 165.5 MB in the end (delta: 15.3 MB). Peak memory consumption was 15.3 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1161.21 ms. Allocated memory was 203.4 MB in the beginning and 232.8 MB in the end (delta: 29.4 MB). Free memory was 164.9 MB in the beginning and 184.8 MB in the end (delta: -19.9 MB). Peak memory consumption was 9.4 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: [L50] rr * ptr1 = 0; [L51] CALL, EXPR getPtr() [L37] CALL, EXPR getrr() [L30] rr * r = (rr *)malloc(sizeof *r); [L31] r -> state = 0 [L32] return r; [L37] RET, EXPR getrr() [L37] rr * r = getrr(); [L38] r -> state = 1 [L39] return r; [L51] RET, EXPR getPtr() [L51] ptr1 = getPtr() [L52] CALL freePtr(ptr1) [L44] EXPR ptr -> state [L44] (ptr -> state == 1) ? (0) : __blast_assert () [L45] ptr -> state = 2 [L52] RET freePtr(ptr1) [L54] CALL freePtr(ptr1) [L44] EXPR ptr -> state [L44] (ptr -> state == 1) ? (0) : __blast_assert () [L44] CALL __blast_assert () [L6] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 7 procedures, 43 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 1.0s, OverallIterations: 2, TraceHistogramMax: 2, AutomataDifference: 0.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 33 SDtfs, 35 SDslu, 157 SDs, 0 SdLazy, 178 SolverSat, 14 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 23 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=43occurred 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: 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...