/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/array-fpi/condnf.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-3af5e1f [2020-09-04 17:43:30,742 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-04 17:43:30,747 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-04 17:43:30,797 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-04 17:43:30,797 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-04 17:43:30,806 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-04 17:43:30,810 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-04 17:43:30,815 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-04 17:43:30,817 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-04 17:43:30,821 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-04 17:43:30,822 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-04 17:43:30,823 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-04 17:43:30,824 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-04 17:43:30,827 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-04 17:43:30,830 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-04 17:43:30,832 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-04 17:43:30,834 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-04 17:43:30,836 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-04 17:43:30,838 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-04 17:43:30,847 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-04 17:43:30,850 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-04 17:43:30,851 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-04 17:43:30,853 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-04 17:43:30,853 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-04 17:43:30,868 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-09-04 17:43:30,887 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-04 17:43:30,889 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-04 17:43:30,889 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-04 17:43:30,890 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 17:43:30,903 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-04 17:43:30,903 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-04 17:43:30,905 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-04 17:43:30,905 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-04 17:43:30,905 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-04 17:43:30,905 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-04 17:43:30,906 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-04 17:43:30,906 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-04 17:43:30,906 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-04 17:43:30,906 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-04 17:43:30,906 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-04 17:43:30,907 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-04 17:43:30,907 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-04 17:43:30,907 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-04 17:43:30,907 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-04 17:43:30,907 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-09-04 17:43:30,908 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-04 17:43:30,908 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-04 17:43:30,908 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-04 17:43:30,908 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-04 17:43:30,908 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-09-04 17:43:30,909 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-04 17:43:30,909 INFO L138 SettingsManager]: * Use separate solver for trace checks=false [2020-09-04 17:43:31,389 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-04 17:43:31,416 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-04 17:43:31,423 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-04 17:43:31,428 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-04 17:43:31,429 INFO L275 PluginConnector]: CDTParser initialized [2020-09-04 17:43:31,430 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-fpi/condnf.c [2020-09-04 17:43:31,528 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/cba95bca2/6ce1a76a1fc44dfe94118d79c080c355/FLAG23224c1e3 [2020-09-04 17:43:32,107 INFO L306 CDTParser]: Found 1 translation units. [2020-09-04 17:43:32,108 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/array-fpi/condnf.c [2020-09-04 17:43:32,118 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/cba95bca2/6ce1a76a1fc44dfe94118d79c080c355/FLAG23224c1e3 [2020-09-04 17:43:32,425 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/cba95bca2/6ce1a76a1fc44dfe94118d79c080c355 [2020-09-04 17:43:32,440 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-04 17:43:32,443 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-04 17:43:32,447 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-04 17:43:32,447 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-04 17:43:32,452 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-04 17:43:32,453 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.09 05:43:32" (1/1) ... [2020-09-04 17:43:32,458 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@774a9bb8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 05:43:32, skipping insertion in model container [2020-09-04 17:43:32,458 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.09 05:43:32" (1/1) ... [2020-09-04 17:43:32,469 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-04 17:43:32,499 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-04 17:43:32,753 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-04 17:43:32,767 INFO L203 MainTranslator]: Completed pre-run [2020-09-04 17:43:32,788 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-04 17:43:32,806 INFO L208 MainTranslator]: Completed translation [2020-09-04 17:43:32,806 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 05:43:32 WrapperNode [2020-09-04 17:43:32,806 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-04 17:43:32,807 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-04 17:43:32,807 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-04 17:43:32,807 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-04 17:43:32,905 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 05:43:32" (1/1) ... [2020-09-04 17:43:32,905 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 05:43:32" (1/1) ... [2020-09-04 17:43:32,914 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 05:43:32" (1/1) ... [2020-09-04 17:43:32,914 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 05:43:32" (1/1) ... [2020-09-04 17:43:32,922 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 05:43:32" (1/1) ... [2020-09-04 17:43:32,929 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 05:43:32" (1/1) ... [2020-09-04 17:43:32,931 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 05:43:32" (1/1) ... [2020-09-04 17:43:32,934 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-04 17:43:32,934 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-04 17:43:32,934 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-04 17:43:32,935 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-04 17:43:32,936 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 05:43:32" (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 17:43:33,018 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-04 17:43:33,019 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-04 17:43:33,019 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-09-04 17:43:33,019 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-09-04 17:43:33,019 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-04 17:43:33,020 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-04 17:43:33,020 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-09-04 17:43:33,020 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-09-04 17:43:33,020 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-09-04 17:43:33,021 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-04 17:43:33,022 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-09-04 17:43:33,023 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-04 17:43:33,023 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-09-04 17:43:33,023 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-04 17:43:33,023 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-09-04 17:43:33,024 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-04 17:43:33,024 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-04 17:43:33,024 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-04 17:43:33,429 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-04 17:43:33,430 INFO L295 CfgBuilder]: Removed 3 assume(true) statements. [2020-09-04 17:43:33,441 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.09 05:43:33 BoogieIcfgContainer [2020-09-04 17:43:33,441 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-04 17:43:33,443 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-04 17:43:33,443 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-04 17:43:33,450 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-04 17:43:33,450 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 04.09 05:43:32" (1/3) ... [2020-09-04 17:43:33,451 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@652066d7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.09 05:43:33, skipping insertion in model container [2020-09-04 17:43:33,452 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 05:43:32" (2/3) ... [2020-09-04 17:43:33,453 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@652066d7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.09 05:43:33, skipping insertion in model container [2020-09-04 17:43:33,453 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.09 05:43:33" (3/3) ... [2020-09-04 17:43:33,456 INFO L109 eAbstractionObserver]: Analyzing ICFG condnf.c [2020-09-04 17:43:33,466 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-04 17:43:33,476 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-04 17:43:33,499 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-04 17:43:33,526 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-04 17:43:33,526 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-04 17:43:33,527 INFO L377 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2020-09-04 17:43:33,527 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-04 17:43:33,527 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-04 17:43:33,527 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-04 17:43:33,527 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-04 17:43:33,528 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-04 17:43:33,547 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states. [2020-09-04 17:43:33,562 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-09-04 17:43:33,562 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 17:43:33,564 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, 1] [2020-09-04 17:43:33,564 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 17:43:33,572 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 17:43:33,573 INFO L82 PathProgramCache]: Analyzing trace with hash -386984160, now seen corresponding path program 1 times [2020-09-04 17:43:33,584 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 17:43:33,585 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [542524278] [2020-09-04 17:43:33,585 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 17:43:33,658 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 17:43:33,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:43:33,846 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 17:43:33,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:43:33,868 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-04 17:43:33,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:43:33,882 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 17:43:33,885 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [542524278] [2020-09-04 17:43:33,888 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 17:43:33,888 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-04 17:43:33,889 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1484755472] [2020-09-04 17:43:33,896 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-04 17:43:33,896 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 17:43:33,912 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-04 17:43:33,913 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-04 17:43:33,915 INFO L87 Difference]: Start difference. First operand 62 states. Second operand 3 states. [2020-09-04 17:43:34,113 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 17:43:34,114 INFO L93 Difference]: Finished difference Result 107 states and 124 transitions. [2020-09-04 17:43:34,114 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-04 17:43:34,116 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 31 [2020-09-04 17:43:34,117 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 17:43:34,129 INFO L225 Difference]: With dead ends: 107 [2020-09-04 17:43:34,129 INFO L226 Difference]: Without dead ends: 55 [2020-09-04 17:43:34,135 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-04 17:43:34,154 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2020-09-04 17:43:34,185 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 55. [2020-09-04 17:43:34,187 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2020-09-04 17:43:34,189 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 58 transitions. [2020-09-04 17:43:34,192 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 58 transitions. Word has length 31 [2020-09-04 17:43:34,192 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 17:43:34,193 INFO L479 AbstractCegarLoop]: Abstraction has 55 states and 58 transitions. [2020-09-04 17:43:34,193 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-04 17:43:34,193 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 58 transitions. [2020-09-04 17:43:34,194 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-09-04 17:43:34,195 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 17:43:34,195 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, 1] [2020-09-04 17:43:34,195 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-04 17:43:34,196 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 17:43:34,196 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 17:43:34,196 INFO L82 PathProgramCache]: Analyzing trace with hash 1278196063, now seen corresponding path program 1 times [2020-09-04 17:43:34,197 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 17:43:34,197 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [478905734] [2020-09-04 17:43:34,198 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 17:43:34,200 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 17:43:34,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:43:34,307 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 17:43:34,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:43:34,315 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-04 17:43:34,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:43:34,326 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 17:43:34,327 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [478905734] [2020-09-04 17:43:34,328 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 17:43:34,328 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-04 17:43:34,328 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [509428708] [2020-09-04 17:43:34,330 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-04 17:43:34,330 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 17:43:34,330 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-04 17:43:34,331 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-04 17:43:34,331 INFO L87 Difference]: Start difference. First operand 55 states and 58 transitions. Second operand 5 states. [2020-09-04 17:43:34,590 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 17:43:34,591 INFO L93 Difference]: Finished difference Result 105 states and 114 transitions. [2020-09-04 17:43:34,591 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-04 17:43:34,592 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 31 [2020-09-04 17:43:34,592 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 17:43:34,596 INFO L225 Difference]: With dead ends: 105 [2020-09-04 17:43:34,596 INFO L226 Difference]: Without dead ends: 78 [2020-09-04 17:43:34,598 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-09-04 17:43:34,599 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2020-09-04 17:43:34,635 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 57. [2020-09-04 17:43:34,635 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 57 states. [2020-09-04 17:43:34,637 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 60 transitions. [2020-09-04 17:43:34,637 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 60 transitions. Word has length 31 [2020-09-04 17:43:34,638 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 17:43:34,638 INFO L479 AbstractCegarLoop]: Abstraction has 57 states and 60 transitions. [2020-09-04 17:43:34,638 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-04 17:43:34,638 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 60 transitions. [2020-09-04 17:43:34,639 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-09-04 17:43:34,640 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 17:43:34,640 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 17:43:34,640 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-04 17:43:34,641 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 17:43:34,641 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 17:43:34,641 INFO L82 PathProgramCache]: Analyzing trace with hash -620119431, now seen corresponding path program 1 times [2020-09-04 17:43:34,641 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 17:43:34,642 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2089860150] [2020-09-04 17:43:34,642 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 17:43:34,676 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 17:43:34,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:43:34,999 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 17:43:35,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:43:35,005 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-04 17:43:35,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:43:35,015 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 17:43:35,015 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2089860150] [2020-09-04 17:43:35,016 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 17:43:35,016 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-09-04 17:43:35,016 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [50544845] [2020-09-04 17:43:35,017 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-04 17:43:35,017 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 17:43:35,017 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-04 17:43:35,018 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2020-09-04 17:43:35,018 INFO L87 Difference]: Start difference. First operand 57 states and 60 transitions. Second operand 11 states. [2020-09-04 17:43:35,453 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 17:43:35,454 INFO L93 Difference]: Finished difference Result 111 states and 119 transitions. [2020-09-04 17:43:35,454 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-04 17:43:35,455 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 46 [2020-09-04 17:43:35,455 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 17:43:35,457 INFO L225 Difference]: With dead ends: 111 [2020-09-04 17:43:35,457 INFO L226 Difference]: Without dead ends: 109 [2020-09-04 17:43:35,458 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=77, Invalid=265, Unknown=0, NotChecked=0, Total=342 [2020-09-04 17:43:35,459 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109 states. [2020-09-04 17:43:35,477 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109 to 73. [2020-09-04 17:43:35,477 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 73 states. [2020-09-04 17:43:35,479 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 78 transitions. [2020-09-04 17:43:35,479 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 78 transitions. Word has length 46 [2020-09-04 17:43:35,480 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 17:43:35,480 INFO L479 AbstractCegarLoop]: Abstraction has 73 states and 78 transitions. [2020-09-04 17:43:35,480 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-04 17:43:35,481 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 78 transitions. [2020-09-04 17:43:35,482 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2020-09-04 17:43:35,482 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 17:43:35,483 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 17:43:35,483 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-04 17:43:35,483 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 17:43:35,484 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 17:43:35,484 INFO L82 PathProgramCache]: Analyzing trace with hash 1321326334, now seen corresponding path program 1 times [2020-09-04 17:43:35,484 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 17:43:35,485 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1880721006] [2020-09-04 17:43:35,485 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 17:43:35,491 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 17:43:35,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-04 17:43:35,525 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-09-04 17:43:35,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-04 17:43:35,557 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-09-04 17:43:35,595 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-09-04 17:43:35,595 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-09-04 17:43:35,596 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-04 17:43:35,621 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 04.09 05:43:35 BoogieIcfgContainer [2020-09-04 17:43:35,621 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-04 17:43:35,625 INFO L168 Benchmark]: Toolchain (without parser) took 3181.41 ms. Allocated memory was 140.5 MB in the beginning and 234.4 MB in the end (delta: 93.8 MB). Free memory was 105.1 MB in the beginning and 105.6 MB in the end (delta: -574.8 kB). Peak memory consumption was 93.3 MB. Max. memory is 7.1 GB. [2020-09-04 17:43:35,626 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 140.5 MB. Free memory was 123.0 MB in the beginning and 122.8 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-09-04 17:43:35,627 INFO L168 Benchmark]: CACSL2BoogieTranslator took 359.89 ms. Allocated memory is still 140.5 MB. Free memory was 104.9 MB in the beginning and 94.6 MB in the end (delta: 10.2 MB). Peak memory consumption was 10.2 MB. Max. memory is 7.1 GB. [2020-09-04 17:43:35,628 INFO L168 Benchmark]: Boogie Preprocessor took 126.87 ms. Allocated memory was 140.5 MB in the beginning and 203.9 MB in the end (delta: 63.4 MB). Free memory was 94.6 MB in the beginning and 181.4 MB in the end (delta: -86.8 MB). Peak memory consumption was 13.4 MB. Max. memory is 7.1 GB. [2020-09-04 17:43:35,629 INFO L168 Benchmark]: RCFGBuilder took 507.28 ms. Allocated memory is still 203.9 MB. Free memory was 181.4 MB in the beginning and 163.4 MB in the end (delta: 18.0 MB). Peak memory consumption was 18.0 MB. Max. memory is 7.1 GB. [2020-09-04 17:43:35,631 INFO L168 Benchmark]: TraceAbstraction took 2178.44 ms. Allocated memory was 203.9 MB in the beginning and 234.4 MB in the end (delta: 30.4 MB). Free memory was 162.7 MB in the beginning and 105.6 MB in the end (delta: 57.1 MB). Peak memory consumption was 87.5 MB. Max. memory is 7.1 GB. [2020-09-04 17:43:35,635 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 140.5 MB. Free memory was 123.0 MB in the beginning and 122.8 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 359.89 ms. Allocated memory is still 140.5 MB. Free memory was 104.9 MB in the beginning and 94.6 MB in the end (delta: 10.2 MB). Peak memory consumption was 10.2 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 126.87 ms. Allocated memory was 140.5 MB in the beginning and 203.9 MB in the end (delta: 63.4 MB). Free memory was 94.6 MB in the beginning and 181.4 MB in the end (delta: -86.8 MB). Peak memory consumption was 13.4 MB. Max. memory is 7.1 GB. * RCFGBuilder took 507.28 ms. Allocated memory is still 203.9 MB. Free memory was 181.4 MB in the beginning and 163.4 MB in the end (delta: 18.0 MB). Peak memory consumption was 18.0 MB. Max. memory is 7.1 GB. * TraceAbstraction took 2178.44 ms. Allocated memory was 203.9 MB in the beginning and 234.4 MB in the end (delta: 30.4 MB). Free memory was 162.7 MB in the beginning and 105.6 MB in the end (delta: 57.1 MB). Peak memory consumption was 87.5 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 13]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L17] int N; [L21] N = __VERIFIER_nondet_int() [L22] COND FALSE !(N <= 0) [L23] CALL assume_abort_if_not(N <= 2147483647/sizeof(int)) [L11] COND FALSE !(!cond) [L23] RET assume_abort_if_not(N <= 2147483647/sizeof(int)) [L25] int i; [L26] int *a = malloc(sizeof(int)*N); [L28] i=0 [L28] COND TRUE i N [L36] EXPR a[i] [L36] a[i] = a[i] [L33] i++ [L33] COND FALSE !(i