/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/brs1f.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-3af5e1f [2020-09-04 17:43:19,483 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-04 17:43:19,487 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-04 17:43:19,534 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-04 17:43:19,534 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-04 17:43:19,536 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-04 17:43:19,537 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-04 17:43:19,539 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-04 17:43:19,541 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-04 17:43:19,542 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-04 17:43:19,543 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-04 17:43:19,545 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-04 17:43:19,545 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-04 17:43:19,546 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-04 17:43:19,548 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-04 17:43:19,549 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-04 17:43:19,550 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-04 17:43:19,551 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-04 17:43:19,553 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-04 17:43:19,555 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-04 17:43:19,557 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-04 17:43:19,559 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-04 17:43:19,560 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-04 17:43:19,561 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-04 17:43:19,564 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-09-04 17:43:19,573 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-04 17:43:19,574 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-04 17:43:19,575 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-04 17:43:19,576 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 17:43:19,589 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-04 17:43:19,589 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-04 17:43:19,590 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-04 17:43:19,591 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-04 17:43:19,591 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-04 17:43:19,591 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-04 17:43:19,591 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-04 17:43:19,591 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-04 17:43:19,592 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-04 17:43:19,592 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-04 17:43:19,592 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-04 17:43:19,592 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-04 17:43:19,592 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-04 17:43:19,593 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-04 17:43:19,593 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-04 17:43:19,593 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-09-04 17:43:19,593 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-04 17:43:19,593 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-04 17:43:19,594 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-04 17:43:19,594 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-04 17:43:19,594 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-09-04 17:43:19,594 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-04 17:43:19,595 INFO L138 SettingsManager]: * Use separate solver for trace checks=false [2020-09-04 17:43:20,060 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-04 17:43:20,082 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-04 17:43:20,086 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-04 17:43:20,088 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-04 17:43:20,089 INFO L275 PluginConnector]: CDTParser initialized [2020-09-04 17:43:20,090 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-fpi/brs1f.c [2020-09-04 17:43:20,176 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/abe136c4a/aa638f86c0884c28860aefa8bd6e1690/FLAGa116b34d1 [2020-09-04 17:43:20,728 INFO L306 CDTParser]: Found 1 translation units. [2020-09-04 17:43:20,729 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/array-fpi/brs1f.c [2020-09-04 17:43:20,738 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/abe136c4a/aa638f86c0884c28860aefa8bd6e1690/FLAGa116b34d1 [2020-09-04 17:43:21,059 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/abe136c4a/aa638f86c0884c28860aefa8bd6e1690 [2020-09-04 17:43:21,072 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-04 17:43:21,074 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-04 17:43:21,076 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-04 17:43:21,076 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-04 17:43:21,081 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-04 17:43:21,082 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.09 05:43:21" (1/1) ... [2020-09-04 17:43:21,087 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3c096cad and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 05:43:21, skipping insertion in model container [2020-09-04 17:43:21,087 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.09 05:43:21" (1/1) ... [2020-09-04 17:43:21,097 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-04 17:43:21,122 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-04 17:43:21,351 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-04 17:43:21,362 INFO L203 MainTranslator]: Completed pre-run [2020-09-04 17:43:21,400 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-04 17:43:21,499 INFO L208 MainTranslator]: Completed translation [2020-09-04 17:43:21,500 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 05:43:21 WrapperNode [2020-09-04 17:43:21,500 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-04 17:43:21,501 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-04 17:43:21,501 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-04 17:43:21,501 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-04 17:43:21,518 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 05:43:21" (1/1) ... [2020-09-04 17:43:21,518 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 05:43:21" (1/1) ... [2020-09-04 17:43:21,529 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 05:43:21" (1/1) ... [2020-09-04 17:43:21,529 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 05:43:21" (1/1) ... [2020-09-04 17:43:21,538 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 05:43:21" (1/1) ... [2020-09-04 17:43:21,544 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 05:43:21" (1/1) ... [2020-09-04 17:43:21,546 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 05:43:21" (1/1) ... [2020-09-04 17:43:21,549 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-04 17:43:21,550 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-04 17:43:21,550 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-04 17:43:21,550 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-04 17:43:21,551 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 05:43:21" (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 17:43:21,636 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-04 17:43:21,636 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-04 17:43:21,636 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-09-04 17:43:21,637 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-09-04 17:43:21,637 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-04 17:43:21,637 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-04 17:43:21,637 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-09-04 17:43:21,637 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-09-04 17:43:21,637 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-09-04 17:43:21,637 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-04 17:43:21,638 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-09-04 17:43:21,638 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-04 17:43:21,638 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-09-04 17:43:21,638 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-09-04 17:43:21,638 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-04 17:43:21,639 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-09-04 17:43:21,639 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-04 17:43:21,639 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-04 17:43:21,639 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-04 17:43:22,028 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-04 17:43:22,028 INFO L295 CfgBuilder]: Removed 2 assume(true) statements. [2020-09-04 17:43:22,034 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.09 05:43:22 BoogieIcfgContainer [2020-09-04 17:43:22,035 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-04 17:43:22,036 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-04 17:43:22,036 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-04 17:43:22,040 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-04 17:43:22,041 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 04.09 05:43:21" (1/3) ... [2020-09-04 17:43:22,042 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6e3e160b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.09 05:43:22, skipping insertion in model container [2020-09-04 17:43:22,042 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 05:43:21" (2/3) ... [2020-09-04 17:43:22,042 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6e3e160b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.09 05:43:22, skipping insertion in model container [2020-09-04 17:43:22,042 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.09 05:43:22" (3/3) ... [2020-09-04 17:43:22,045 INFO L109 eAbstractionObserver]: Analyzing ICFG brs1f.c [2020-09-04 17:43:22,057 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-04 17:43:22,079 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-04 17:43:22,103 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-04 17:43:22,132 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-04 17:43:22,132 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-04 17:43:22,132 INFO L377 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2020-09-04 17:43:22,132 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-04 17:43:22,133 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-04 17:43:22,133 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-04 17:43:22,133 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-04 17:43:22,133 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-04 17:43:22,154 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states. [2020-09-04 17:43:22,167 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-09-04 17:43:22,167 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 17:43:22,169 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] [2020-09-04 17:43:22,169 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 17:43:22,177 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 17:43:22,177 INFO L82 PathProgramCache]: Analyzing trace with hash 221259408, now seen corresponding path program 1 times [2020-09-04 17:43:22,190 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 17:43:22,191 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1434236874] [2020-09-04 17:43:22,191 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 17:43:22,271 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 17:43:22,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:43:22,482 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 17:43:22,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:43:22,496 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-04 17:43:22,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:43:22,509 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 17:43:22,512 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1434236874] [2020-09-04 17:43:22,514 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 17:43:22,515 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-04 17:43:22,515 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1151026699] [2020-09-04 17:43:22,522 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-04 17:43:22,522 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 17:43:22,541 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-04 17:43:22,542 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-04 17:43:22,545 INFO L87 Difference]: Start difference. First operand 59 states. Second operand 3 states. [2020-09-04 17:43:22,738 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 17:43:22,739 INFO L93 Difference]: Finished difference Result 100 states and 115 transitions. [2020-09-04 17:43:22,739 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-04 17:43:22,741 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 30 [2020-09-04 17:43:22,742 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 17:43:22,756 INFO L225 Difference]: With dead ends: 100 [2020-09-04 17:43:22,757 INFO L226 Difference]: Without dead ends: 46 [2020-09-04 17:43:22,764 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 17:43:22,786 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2020-09-04 17:43:22,815 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 46. [2020-09-04 17:43:22,817 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states. [2020-09-04 17:43:22,819 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 48 transitions. [2020-09-04 17:43:22,821 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 48 transitions. Word has length 30 [2020-09-04 17:43:22,821 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 17:43:22,822 INFO L479 AbstractCegarLoop]: Abstraction has 46 states and 48 transitions. [2020-09-04 17:43:22,822 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-04 17:43:22,822 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 48 transitions. [2020-09-04 17:43:22,823 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-09-04 17:43:22,823 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 17:43:22,824 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] [2020-09-04 17:43:22,824 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-04 17:43:22,825 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 17:43:22,825 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 17:43:22,825 INFO L82 PathProgramCache]: Analyzing trace with hash -151091841, now seen corresponding path program 1 times [2020-09-04 17:43:22,826 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 17:43:22,826 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [288675280] [2020-09-04 17:43:22,826 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 17:43:22,829 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 17:43:22,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:43:22,935 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 17:43:22,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:43:22,943 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-04 17:43:22,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:43:22,952 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 17:43:22,953 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [288675280] [2020-09-04 17:43:22,953 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 17:43:22,953 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-04 17:43:22,953 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1565317407] [2020-09-04 17:43:22,954 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-04 17:43:22,955 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 17:43:22,955 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-04 17:43:22,955 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-04 17:43:22,956 INFO L87 Difference]: Start difference. First operand 46 states and 48 transitions. Second operand 5 states. [2020-09-04 17:43:23,139 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 17:43:23,139 INFO L93 Difference]: Finished difference Result 73 states and 79 transitions. [2020-09-04 17:43:23,140 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-04 17:43:23,140 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 30 [2020-09-04 17:43:23,140 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 17:43:23,142 INFO L225 Difference]: With dead ends: 73 [2020-09-04 17:43:23,142 INFO L226 Difference]: Without dead ends: 55 [2020-09-04 17:43:23,144 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 17:43:23,145 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2020-09-04 17:43:23,158 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 49. [2020-09-04 17:43:23,158 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49 states. [2020-09-04 17:43:23,160 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 51 transitions. [2020-09-04 17:43:23,160 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 51 transitions. Word has length 30 [2020-09-04 17:43:23,160 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 17:43:23,161 INFO L479 AbstractCegarLoop]: Abstraction has 49 states and 51 transitions. [2020-09-04 17:43:23,161 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-04 17:43:23,161 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 51 transitions. [2020-09-04 17:43:23,165 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2020-09-04 17:43:23,166 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 17:43:23,166 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] [2020-09-04 17:43:23,167 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-04 17:43:23,167 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 17:43:23,167 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 17:43:23,168 INFO L82 PathProgramCache]: Analyzing trace with hash 1707000309, now seen corresponding path program 1 times [2020-09-04 17:43:23,168 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 17:43:23,168 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2025963145] [2020-09-04 17:43:23,169 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 17:43:23,198 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 17:43:23,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-04 17:43:23,250 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-09-04 17:43:23,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-04 17:43:23,321 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-09-04 17:43:23,358 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-09-04 17:43:23,358 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-09-04 17:43:23,359 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-04 17:43:23,382 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 04.09 05:43:23 BoogieIcfgContainer [2020-09-04 17:43:23,383 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-04 17:43:23,387 INFO L168 Benchmark]: Toolchain (without parser) took 2312.07 ms. Allocated memory was 138.9 MB in the beginning and 202.4 MB in the end (delta: 63.4 MB). Free memory was 102.3 MB in the beginning and 90.1 MB in the end (delta: 12.2 MB). Peak memory consumption was 75.6 MB. Max. memory is 7.1 GB. [2020-09-04 17:43:23,400 INFO L168 Benchmark]: CDTParser took 0.27 ms. Allocated memory is still 138.9 MB. Free memory was 120.2 MB in the beginning and 120.0 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-09-04 17:43:23,401 INFO L168 Benchmark]: CACSL2BoogieTranslator took 425.08 ms. Allocated memory was 138.9 MB in the beginning and 202.4 MB in the end (delta: 63.4 MB). Free memory was 102.1 MB in the beginning and 181.3 MB in the end (delta: -79.2 MB). Peak memory consumption was 23.6 MB. Max. memory is 7.1 GB. [2020-09-04 17:43:23,402 INFO L168 Benchmark]: Boogie Preprocessor took 48.25 ms. Allocated memory is still 202.4 MB. Free memory was 181.3 MB in the beginning and 179.0 MB in the end (delta: 2.3 MB). Peak memory consumption was 2.3 MB. Max. memory is 7.1 GB. [2020-09-04 17:43:23,403 INFO L168 Benchmark]: RCFGBuilder took 485.20 ms. Allocated memory is still 202.4 MB. Free memory was 179.0 MB in the beginning and 160.6 MB in the end (delta: 18.4 MB). Peak memory consumption was 18.4 MB. Max. memory is 7.1 GB. [2020-09-04 17:43:23,404 INFO L168 Benchmark]: TraceAbstraction took 1346.97 ms. Allocated memory is still 202.4 MB. Free memory was 159.9 MB in the beginning and 90.1 MB in the end (delta: 69.8 MB). Peak memory consumption was 69.8 MB. Max. memory is 7.1 GB. [2020-09-04 17:43:23,408 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.27 ms. Allocated memory is still 138.9 MB. Free memory was 120.2 MB in the beginning and 120.0 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 425.08 ms. Allocated memory was 138.9 MB in the beginning and 202.4 MB in the end (delta: 63.4 MB). Free memory was 102.1 MB in the beginning and 181.3 MB in the end (delta: -79.2 MB). Peak memory consumption was 23.6 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 48.25 ms. Allocated memory is still 202.4 MB. Free memory was 181.3 MB in the beginning and 179.0 MB in the end (delta: 2.3 MB). Peak memory consumption was 2.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 485.20 ms. Allocated memory is still 202.4 MB. Free memory was 179.0 MB in the beginning and 160.6 MB in the end (delta: 18.4 MB). Peak memory consumption was 18.4 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1346.97 ms. Allocated memory is still 202.4 MB. Free memory was 159.9 MB in the beginning and 90.1 MB in the end (delta: 69.8 MB). Peak memory consumption was 69.8 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] long long sum[1]; [L27] int *a = malloc(sizeof(int)*N); [L29] i=0 [L29] COND TRUE i