/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/ifeqn2f.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-3af5e1f [2020-09-04 17:43:40,442 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-04 17:43:40,447 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-04 17:43:40,495 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-04 17:43:40,496 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-04 17:43:40,497 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-04 17:43:40,499 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-04 17:43:40,501 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-04 17:43:40,502 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-04 17:43:40,503 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-04 17:43:40,504 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-04 17:43:40,506 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-04 17:43:40,506 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-04 17:43:40,507 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-04 17:43:40,508 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-04 17:43:40,510 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-04 17:43:40,511 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-04 17:43:40,512 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-04 17:43:40,514 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-04 17:43:40,516 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-04 17:43:40,518 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-04 17:43:40,519 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-04 17:43:40,520 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-04 17:43:40,521 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-04 17:43:40,524 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-09-04 17:43:40,533 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-04 17:43:40,534 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-04 17:43:40,534 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-04 17:43:40,535 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 17:43:40,547 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-04 17:43:40,547 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-04 17:43:40,549 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-04 17:43:40,549 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-04 17:43:40,549 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-04 17:43:40,549 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-04 17:43:40,550 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-04 17:43:40,550 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-04 17:43:40,550 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-04 17:43:40,550 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-04 17:43:40,550 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-04 17:43:40,551 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-04 17:43:40,551 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-04 17:43:40,551 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-04 17:43:40,551 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-04 17:43:40,552 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-09-04 17:43:40,552 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-04 17:43:40,552 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-04 17:43:40,552 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-04 17:43:40,552 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-04 17:43:40,553 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-09-04 17:43:40,553 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-04 17:43:40,553 INFO L138 SettingsManager]: * Use separate solver for trace checks=false [2020-09-04 17:43:41,001 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-04 17:43:41,018 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-04 17:43:41,022 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-04 17:43:41,024 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-04 17:43:41,025 INFO L275 PluginConnector]: CDTParser initialized [2020-09-04 17:43:41,026 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-fpi/ifeqn2f.c [2020-09-04 17:43:41,109 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/23aabdcc4/2675c01963804fb393a4a1d899f5b963/FLAG5a43caf42 [2020-09-04 17:43:41,676 INFO L306 CDTParser]: Found 1 translation units. [2020-09-04 17:43:41,677 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/array-fpi/ifeqn2f.c [2020-09-04 17:43:41,685 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/23aabdcc4/2675c01963804fb393a4a1d899f5b963/FLAG5a43caf42 [2020-09-04 17:43:41,988 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/23aabdcc4/2675c01963804fb393a4a1d899f5b963 [2020-09-04 17:43:42,003 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-04 17:43:42,006 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-04 17:43:42,007 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-04 17:43:42,007 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-04 17:43:42,011 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-04 17:43:42,013 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.09 05:43:41" (1/1) ... [2020-09-04 17:43:42,017 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@544d7f41 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 05:43:42, skipping insertion in model container [2020-09-04 17:43:42,018 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.09 05:43:41" (1/1) ... [2020-09-04 17:43:42,027 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-04 17:43:42,054 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-04 17:43:42,287 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-04 17:43:42,300 INFO L203 MainTranslator]: Completed pre-run [2020-09-04 17:43:42,323 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-04 17:43:42,342 INFO L208 MainTranslator]: Completed translation [2020-09-04 17:43:42,342 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 05:43:42 WrapperNode [2020-09-04 17:43:42,343 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-04 17:43:42,343 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-04 17:43:42,343 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-04 17:43:42,343 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-04 17:43:42,441 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 05:43:42" (1/1) ... [2020-09-04 17:43:42,441 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 05:43:42" (1/1) ... [2020-09-04 17:43:42,451 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 05:43:42" (1/1) ... [2020-09-04 17:43:42,452 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 05:43:42" (1/1) ... [2020-09-04 17:43:42,461 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 05:43:42" (1/1) ... [2020-09-04 17:43:42,471 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 05:43:42" (1/1) ... [2020-09-04 17:43:42,473 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 05:43:42" (1/1) ... [2020-09-04 17:43:42,476 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-04 17:43:42,477 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-04 17:43:42,477 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-04 17:43:42,477 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-04 17:43:42,478 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 05:43:42" (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 17:43:42,564 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-04 17:43:42,564 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-04 17:43:42,564 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-09-04 17:43:42,564 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-09-04 17:43:42,564 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-04 17:43:42,565 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-04 17:43:42,565 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-09-04 17:43:42,565 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-09-04 17:43:42,565 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-09-04 17:43:42,565 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-04 17:43:42,566 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-09-04 17:43:42,566 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-04 17:43:42,567 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-09-04 17:43:42,567 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-04 17:43:42,567 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-09-04 17:43:42,567 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-04 17:43:42,567 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-04 17:43:42,568 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-04 17:43:42,955 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-04 17:43:42,956 INFO L295 CfgBuilder]: Removed 3 assume(true) statements. [2020-09-04 17:43:42,961 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.09 05:43:42 BoogieIcfgContainer [2020-09-04 17:43:42,962 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-04 17:43:42,963 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-04 17:43:42,963 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-04 17:43:42,967 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-04 17:43:42,967 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 04.09 05:43:41" (1/3) ... [2020-09-04 17:43:42,968 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1e004c16 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.09 05:43:42, skipping insertion in model container [2020-09-04 17:43:42,968 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 05:43:42" (2/3) ... [2020-09-04 17:43:42,970 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1e004c16 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.09 05:43:42, skipping insertion in model container [2020-09-04 17:43:42,970 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.09 05:43:42" (3/3) ... [2020-09-04 17:43:42,975 INFO L109 eAbstractionObserver]: Analyzing ICFG ifeqn2f.c [2020-09-04 17:43:42,986 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-04 17:43:42,996 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-04 17:43:43,016 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-04 17:43:43,042 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-04 17:43:43,042 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-04 17:43:43,042 INFO L377 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2020-09-04 17:43:43,042 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-04 17:43:43,042 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-04 17:43:43,042 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-04 17:43:43,043 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-04 17:43:43,043 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-04 17:43:43,060 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states. [2020-09-04 17:43:43,074 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-09-04 17:43:43,074 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 17:43:43,075 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] [2020-09-04 17:43:43,076 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 17:43:43,082 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 17:43:43,082 INFO L82 PathProgramCache]: Analyzing trace with hash 1150160147, now seen corresponding path program 1 times [2020-09-04 17:43:43,092 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 17:43:43,092 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2018678499] [2020-09-04 17:43:43,093 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 17:43:43,166 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 17:43:43,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:43:43,379 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 17:43:43,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:43:43,393 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-04 17:43:43,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:43:43,411 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 17:43:43,414 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2018678499] [2020-09-04 17:43:43,417 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 17:43:43,417 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-04 17:43:43,418 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1007302866] [2020-09-04 17:43:43,425 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-04 17:43:43,425 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 17:43:43,443 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-04 17:43:43,444 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-04 17:43:43,447 INFO L87 Difference]: Start difference. First operand 65 states. Second operand 5 states. [2020-09-04 17:43:43,812 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 17:43:43,812 INFO L93 Difference]: Finished difference Result 131 states and 159 transitions. [2020-09-04 17:43:43,813 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-04 17:43:43,814 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 33 [2020-09-04 17:43:43,815 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 17:43:43,828 INFO L225 Difference]: With dead ends: 131 [2020-09-04 17:43:43,828 INFO L226 Difference]: Without dead ends: 72 [2020-09-04 17:43:43,833 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 17:43:43,855 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2020-09-04 17:43:43,897 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 62. [2020-09-04 17:43:43,899 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 62 states. [2020-09-04 17:43:43,901 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 66 transitions. [2020-09-04 17:43:43,904 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 66 transitions. Word has length 33 [2020-09-04 17:43:43,904 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 17:43:43,904 INFO L479 AbstractCegarLoop]: Abstraction has 62 states and 66 transitions. [2020-09-04 17:43:43,905 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-04 17:43:43,905 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 66 transitions. [2020-09-04 17:43:43,907 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2020-09-04 17:43:43,908 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 17:43:43,908 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] [2020-09-04 17:43:43,909 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-04 17:43:43,910 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 17:43:43,910 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 17:43:43,911 INFO L82 PathProgramCache]: Analyzing trace with hash -1596799413, now seen corresponding path program 1 times [2020-09-04 17:43:43,911 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 17:43:43,912 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1051568668] [2020-09-04 17:43:43,913 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 17:43:43,986 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 17:43:44,033 WARN L168 FreeRefinementEngine]: Strategy FIXED_PREFERENCES was unsuccessful and could not determine trace feasibility [2020-09-04 17:43:44,033 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-09-04 17:43:44,039 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-04 17:43:44,062 WARN L231 ceAbstractionStarter]: Unable to decide correctness. Please check the following counterexample manually. [2020-09-04 17:43:44,062 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 04.09 05:43:44 BoogieIcfgContainer [2020-09-04 17:43:44,063 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-04 17:43:44,067 INFO L168 Benchmark]: Toolchain (without parser) took 2059.78 ms. Allocated memory was 138.9 MB in the beginning and 202.9 MB in the end (delta: 64.0 MB). Free memory was 103.5 MB in the beginning and 102.7 MB in the end (delta: 780.2 kB). Peak memory consumption was 64.7 MB. Max. memory is 7.1 GB. [2020-09-04 17:43:44,068 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 138.9 MB. Free memory was 121.5 MB in the beginning and 121.3 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-09-04 17:43:44,069 INFO L168 Benchmark]: CACSL2BoogieTranslator took 336.07 ms. Allocated memory is still 138.9 MB. Free memory was 103.3 MB in the beginning and 92.8 MB in the end (delta: 10.5 MB). Peak memory consumption was 10.5 MB. Max. memory is 7.1 GB. [2020-09-04 17:43:44,070 INFO L168 Benchmark]: Boogie Preprocessor took 133.00 ms. Allocated memory was 138.9 MB in the beginning and 202.9 MB in the end (delta: 64.0 MB). Free memory was 92.8 MB in the beginning and 180.2 MB in the end (delta: -87.4 MB). Peak memory consumption was 13.4 MB. Max. memory is 7.1 GB. [2020-09-04 17:43:44,071 INFO L168 Benchmark]: RCFGBuilder took 485.25 ms. Allocated memory is still 202.9 MB. Free memory was 180.2 MB in the beginning and 161.0 MB in the end (delta: 19.3 MB). Peak memory consumption was 19.3 MB. Max. memory is 7.1 GB. [2020-09-04 17:43:44,072 INFO L168 Benchmark]: TraceAbstraction took 1099.90 ms. Allocated memory is still 202.9 MB. Free memory was 160.3 MB in the beginning and 102.7 MB in the end (delta: 57.6 MB). Peak memory consumption was 57.6 MB. Max. memory is 7.1 GB. [2020-09-04 17:43:44,076 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24 ms. Allocated memory is still 138.9 MB. Free memory was 121.5 MB in the beginning and 121.3 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 336.07 ms. Allocated memory is still 138.9 MB. Free memory was 103.3 MB in the beginning and 92.8 MB in the end (delta: 10.5 MB). Peak memory consumption was 10.5 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 133.00 ms. Allocated memory was 138.9 MB in the beginning and 202.9 MB in the end (delta: 64.0 MB). Free memory was 92.8 MB in the beginning and 180.2 MB in the end (delta: -87.4 MB). Peak memory consumption was 13.4 MB. Max. memory is 7.1 GB. * RCFGBuilder took 485.25 ms. Allocated memory is still 202.9 MB. Free memory was 180.2 MB in the beginning and 161.0 MB in the end (delta: 19.3 MB). Peak memory consumption was 19.3 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1099.90 ms. Allocated memory is still 202.9 MB. Free memory was 160.3 MB in the beginning and 102.7 MB in the end (delta: 57.6 MB). Peak memory consumption was 57.6 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); [L29] i=0 [L29] COND TRUE i