/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/ncompf.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-3af5e1f [2020-09-04 17:43:59,622 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-04 17:43:59,626 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-04 17:43:59,669 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-04 17:43:59,670 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-04 17:43:59,681 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-04 17:43:59,683 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-04 17:43:59,687 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-04 17:43:59,690 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-04 17:43:59,693 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-04 17:43:59,701 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-04 17:43:59,703 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-04 17:43:59,704 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-04 17:43:59,707 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-04 17:43:59,710 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-04 17:43:59,712 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-04 17:43:59,714 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-04 17:43:59,715 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-04 17:43:59,717 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-04 17:43:59,727 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-04 17:43:59,730 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-04 17:43:59,731 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-04 17:43:59,732 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-04 17:43:59,733 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-04 17:43:59,737 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-09-04 17:43:59,751 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-04 17:43:59,753 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-04 17:43:59,754 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-04 17:43:59,755 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 17:43:59,776 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-04 17:43:59,776 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-04 17:43:59,779 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-04 17:43:59,779 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-04 17:43:59,779 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-04 17:43:59,779 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-04 17:43:59,780 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-04 17:43:59,780 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-04 17:43:59,780 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-04 17:43:59,781 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-04 17:43:59,782 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-04 17:43:59,782 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-04 17:43:59,782 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-04 17:43:59,782 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-04 17:43:59,783 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-04 17:43:59,783 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-09-04 17:43:59,783 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-04 17:43:59,784 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-04 17:43:59,784 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-04 17:43:59,784 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-04 17:43:59,784 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-09-04 17:43:59,784 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-04 17:43:59,785 INFO L138 SettingsManager]: * Use separate solver for trace checks=false [2020-09-04 17:44:00,228 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-04 17:44:00,248 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-04 17:44:00,254 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-04 17:44:00,256 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-04 17:44:00,257 INFO L275 PluginConnector]: CDTParser initialized [2020-09-04 17:44:00,258 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-fpi/ncompf.c [2020-09-04 17:44:00,329 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/71f8faf92/abc8290afb174667abfe1000b45431ca/FLAGb487b72cb [2020-09-04 17:44:00,946 INFO L306 CDTParser]: Found 1 translation units. [2020-09-04 17:44:00,947 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/array-fpi/ncompf.c [2020-09-04 17:44:00,957 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/71f8faf92/abc8290afb174667abfe1000b45431ca/FLAGb487b72cb [2020-09-04 17:44:01,272 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/71f8faf92/abc8290afb174667abfe1000b45431ca [2020-09-04 17:44:01,289 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-04 17:44:01,291 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-04 17:44:01,293 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-04 17:44:01,293 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-04 17:44:01,297 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-04 17:44:01,298 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.09 05:44:01" (1/1) ... [2020-09-04 17:44:01,303 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@75a18185 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 05:44:01, skipping insertion in model container [2020-09-04 17:44:01,303 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.09 05:44:01" (1/1) ... [2020-09-04 17:44:01,313 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-04 17:44:01,344 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-04 17:44:01,612 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-04 17:44:01,624 INFO L203 MainTranslator]: Completed pre-run [2020-09-04 17:44:01,648 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-04 17:44:01,666 INFO L208 MainTranslator]: Completed translation [2020-09-04 17:44:01,667 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 05:44:01 WrapperNode [2020-09-04 17:44:01,667 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-04 17:44:01,668 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-04 17:44:01,668 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-04 17:44:01,669 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-04 17:44:01,758 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 05:44:01" (1/1) ... [2020-09-04 17:44:01,758 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 05:44:01" (1/1) ... [2020-09-04 17:44:01,767 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 05:44:01" (1/1) ... [2020-09-04 17:44:01,768 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 05:44:01" (1/1) ... [2020-09-04 17:44:01,778 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 05:44:01" (1/1) ... [2020-09-04 17:44:01,785 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 05:44:01" (1/1) ... [2020-09-04 17:44:01,787 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 05:44:01" (1/1) ... [2020-09-04 17:44:01,790 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-04 17:44:01,791 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-04 17:44:01,791 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-04 17:44:01,791 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-04 17:44:01,793 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 05:44:01" (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 17:44:01,871 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-04 17:44:01,871 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-04 17:44:01,872 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-09-04 17:44:01,872 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-09-04 17:44:01,872 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-04 17:44:01,872 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-04 17:44:01,872 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-09-04 17:44:01,872 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-09-04 17:44:01,872 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-09-04 17:44:01,873 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-04 17:44:01,873 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-09-04 17:44:01,873 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-04 17:44:01,873 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-09-04 17:44:01,873 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-04 17:44:01,873 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-09-04 17:44:01,874 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-04 17:44:01,874 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-04 17:44:01,874 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-04 17:44:02,231 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-04 17:44:02,232 INFO L295 CfgBuilder]: Removed 4 assume(true) statements. [2020-09-04 17:44:02,238 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.09 05:44:02 BoogieIcfgContainer [2020-09-04 17:44:02,239 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-04 17:44:02,241 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-04 17:44:02,241 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-04 17:44:02,245 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-04 17:44:02,245 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 04.09 05:44:01" (1/3) ... [2020-09-04 17:44:02,246 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5cdc2e0a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.09 05:44:02, skipping insertion in model container [2020-09-04 17:44:02,246 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 05:44:01" (2/3) ... [2020-09-04 17:44:02,247 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5cdc2e0a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.09 05:44:02, skipping insertion in model container [2020-09-04 17:44:02,247 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.09 05:44:02" (3/3) ... [2020-09-04 17:44:02,249 INFO L109 eAbstractionObserver]: Analyzing ICFG ncompf.c [2020-09-04 17:44:02,262 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-04 17:44:02,272 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-04 17:44:02,297 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-04 17:44:02,329 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-04 17:44:02,329 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-04 17:44:02,329 INFO L377 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2020-09-04 17:44:02,329 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-04 17:44:02,329 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-04 17:44:02,330 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-04 17:44:02,330 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-04 17:44:02,330 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-04 17:44:02,350 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states. [2020-09-04 17:44:02,365 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2020-09-04 17:44:02,365 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 17:44:02,366 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] [2020-09-04 17:44:02,367 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 17:44:02,373 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 17:44:02,373 INFO L82 PathProgramCache]: Analyzing trace with hash 1653700080, now seen corresponding path program 1 times [2020-09-04 17:44:02,383 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 17:44:02,384 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2060362907] [2020-09-04 17:44:02,384 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 17:44:02,457 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 17:44:02,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:44:02,678 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 17:44:02,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:44:02,691 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-04 17:44:02,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:44:02,710 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 17:44:02,713 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2060362907] [2020-09-04 17:44:02,715 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 17:44:02,716 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-04 17:44:02,716 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1227427743] [2020-09-04 17:44:02,724 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-04 17:44:02,724 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 17:44:02,748 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-04 17:44:02,749 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-04 17:44:02,752 INFO L87 Difference]: Start difference. First operand 76 states. Second operand 3 states. [2020-09-04 17:44:02,973 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 17:44:02,973 INFO L93 Difference]: Finished difference Result 135 states and 154 transitions. [2020-09-04 17:44:02,974 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-04 17:44:02,975 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 40 [2020-09-04 17:44:02,976 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 17:44:02,987 INFO L225 Difference]: With dead ends: 135 [2020-09-04 17:44:02,988 INFO L226 Difference]: Without dead ends: 69 [2020-09-04 17:44:02,993 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 17:44:03,014 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2020-09-04 17:44:03,046 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 69. [2020-09-04 17:44:03,048 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 69 states. [2020-09-04 17:44:03,050 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 72 transitions. [2020-09-04 17:44:03,053 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 72 transitions. Word has length 40 [2020-09-04 17:44:03,053 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 17:44:03,053 INFO L479 AbstractCegarLoop]: Abstraction has 69 states and 72 transitions. [2020-09-04 17:44:03,054 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-04 17:44:03,054 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 72 transitions. [2020-09-04 17:44:03,056 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2020-09-04 17:44:03,056 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 17:44:03,056 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] [2020-09-04 17:44:03,056 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-04 17:44:03,057 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 17:44:03,057 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 17:44:03,058 INFO L82 PathProgramCache]: Analyzing trace with hash -1268289526, now seen corresponding path program 1 times [2020-09-04 17:44:03,058 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 17:44:03,058 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1367365164] [2020-09-04 17:44:03,059 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 17:44:03,061 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 17:44:03,100 WARN L168 FreeRefinementEngine]: Strategy FIXED_PREFERENCES was unsuccessful and could not determine trace feasibility [2020-09-04 17:44:03,101 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-09-04 17:44:03,107 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-04 17:44:03,126 WARN L231 ceAbstractionStarter]: Unable to decide correctness. Please check the following counterexample manually. [2020-09-04 17:44:03,126 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 04.09 05:44:03 BoogieIcfgContainer [2020-09-04 17:44:03,126 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-04 17:44:03,130 INFO L168 Benchmark]: Toolchain (without parser) took 1837.95 ms. Allocated memory was 139.5 MB in the beginning and 202.4 MB in the end (delta: 62.9 MB). Free memory was 102.7 MB in the beginning and 113.6 MB in the end (delta: -10.9 MB). Peak memory consumption was 52.0 MB. Max. memory is 7.1 GB. [2020-09-04 17:44:03,131 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 139.5 MB. Free memory was 120.7 MB in the beginning and 120.5 MB in the end (delta: 209.7 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-09-04 17:44:03,132 INFO L168 Benchmark]: CACSL2BoogieTranslator took 374.94 ms. Allocated memory is still 139.5 MB. Free memory was 102.4 MB in the beginning and 91.8 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 7.1 GB. [2020-09-04 17:44:03,133 INFO L168 Benchmark]: Boogie Preprocessor took 122.46 ms. Allocated memory was 139.5 MB in the beginning and 202.4 MB in the end (delta: 62.9 MB). Free memory was 91.8 MB in the beginning and 179.8 MB in the end (delta: -88.0 MB). Peak memory consumption was 13.5 MB. Max. memory is 7.1 GB. [2020-09-04 17:44:03,134 INFO L168 Benchmark]: RCFGBuilder took 448.00 ms. Allocated memory is still 202.4 MB. Free memory was 179.8 MB in the beginning and 158.2 MB in the end (delta: 21.6 MB). Peak memory consumption was 21.6 MB. Max. memory is 7.1 GB. [2020-09-04 17:44:03,135 INFO L168 Benchmark]: TraceAbstraction took 886.08 ms. Allocated memory is still 202.4 MB. Free memory was 158.2 MB in the beginning and 113.6 MB in the end (delta: 44.6 MB). Peak memory consumption was 44.6 MB. Max. memory is 7.1 GB. [2020-09-04 17:44:03,139 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 ms. Allocated memory is still 139.5 MB. Free memory was 120.7 MB in the beginning and 120.5 MB in the end (delta: 209.7 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 374.94 ms. Allocated memory is still 139.5 MB. Free memory was 102.4 MB in the beginning and 91.8 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 122.46 ms. Allocated memory was 139.5 MB in the beginning and 202.4 MB in the end (delta: 62.9 MB). Free memory was 91.8 MB in the beginning and 179.8 MB in the end (delta: -88.0 MB). Peak memory consumption was 13.5 MB. Max. memory is 7.1 GB. * RCFGBuilder took 448.00 ms. Allocated memory is still 202.4 MB. Free memory was 179.8 MB in the beginning and 158.2 MB in the end (delta: 21.6 MB). Peak memory consumption was 21.6 MB. Max. memory is 7.1 GB. * TraceAbstraction took 886.08 ms. Allocated memory is still 202.4 MB. Free memory was 158.2 MB in the beginning and 113.6 MB in the end (delta: 44.6 MB). Peak memory consumption was 44.6 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 13]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: unable to decide satisfiability of path constraint. Possible 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] long long *a = malloc(sizeof(long long)*N); [L27] long long *b = malloc(sizeof(long long)*N); [L28] long long *c = malloc(sizeof(long long)*N); [L30] a[0] = 6 [L31] b[0] = 1 [L32] c[0] = 0 [L33] i=1 [L33] COND FALSE !(i