/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/s52iff.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-3af5e1f [2020-09-04 17:44:18,936 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-04 17:44:18,940 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-04 17:44:18,982 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-04 17:44:18,982 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-04 17:44:18,993 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-04 17:44:18,995 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-04 17:44:18,998 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-04 17:44:19,000 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-04 17:44:19,004 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-04 17:44:19,005 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-04 17:44:19,007 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-04 17:44:19,007 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-04 17:44:19,009 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-04 17:44:19,012 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-04 17:44:19,013 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-04 17:44:19,014 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-04 17:44:19,016 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-04 17:44:19,017 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-04 17:44:19,024 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-04 17:44:19,026 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-04 17:44:19,027 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-04 17:44:19,028 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-04 17:44:19,029 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-04 17:44:19,033 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-09-04 17:44:19,042 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-04 17:44:19,043 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-04 17:44:19,045 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-04 17:44:19,046 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 17:44:19,062 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-04 17:44:19,062 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-04 17:44:19,065 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-04 17:44:19,065 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-04 17:44:19,065 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-04 17:44:19,066 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-04 17:44:19,066 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-04 17:44:19,066 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-04 17:44:19,066 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-04 17:44:19,067 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-04 17:44:19,067 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-04 17:44:19,068 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-04 17:44:19,068 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-04 17:44:19,068 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-04 17:44:19,069 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-04 17:44:19,069 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-09-04 17:44:19,069 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-04 17:44:19,069 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-04 17:44:19,069 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-04 17:44:19,070 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-04 17:44:19,070 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-09-04 17:44:19,070 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-04 17:44:19,070 INFO L138 SettingsManager]: * Use separate solver for trace checks=false [2020-09-04 17:44:19,496 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-04 17:44:19,519 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-04 17:44:19,525 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-04 17:44:19,527 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-04 17:44:19,528 INFO L275 PluginConnector]: CDTParser initialized [2020-09-04 17:44:19,529 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-fpi/s52iff.c [2020-09-04 17:44:19,617 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/0b26398c3/14fa7578653342a4ba15b17f26728033/FLAG0c217fa48 [2020-09-04 17:44:20,163 INFO L306 CDTParser]: Found 1 translation units. [2020-09-04 17:44:20,164 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/array-fpi/s52iff.c [2020-09-04 17:44:20,172 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/0b26398c3/14fa7578653342a4ba15b17f26728033/FLAG0c217fa48 [2020-09-04 17:44:20,523 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/0b26398c3/14fa7578653342a4ba15b17f26728033 [2020-09-04 17:44:20,538 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-04 17:44:20,540 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-04 17:44:20,543 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-04 17:44:20,543 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-04 17:44:20,548 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-04 17:44:20,549 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.09 05:44:20" (1/1) ... [2020-09-04 17:44:20,553 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1ce0c36b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 05:44:20, skipping insertion in model container [2020-09-04 17:44:20,553 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.09 05:44:20" (1/1) ... [2020-09-04 17:44:20,562 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-04 17:44:20,593 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-04 17:44:20,840 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-04 17:44:20,850 INFO L203 MainTranslator]: Completed pre-run [2020-09-04 17:44:20,876 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-04 17:44:20,894 INFO L208 MainTranslator]: Completed translation [2020-09-04 17:44:20,895 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 05:44:20 WrapperNode [2020-09-04 17:44:20,895 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-04 17:44:20,896 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-04 17:44:20,896 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-04 17:44:20,896 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-04 17:44:20,998 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 05:44:20" (1/1) ... [2020-09-04 17:44:20,999 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 05:44:20" (1/1) ... [2020-09-04 17:44:21,009 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 05:44:20" (1/1) ... [2020-09-04 17:44:21,010 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 05:44:20" (1/1) ... [2020-09-04 17:44:21,020 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 05:44:20" (1/1) ... [2020-09-04 17:44:21,027 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 05:44:20" (1/1) ... [2020-09-04 17:44:21,029 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 05:44:20" (1/1) ... [2020-09-04 17:44:21,031 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-04 17:44:21,032 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-04 17:44:21,032 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-04 17:44:21,032 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-04 17:44:21,034 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 05:44:20" (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 17:44:21,109 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-04 17:44:21,110 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-04 17:44:21,110 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-09-04 17:44:21,110 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-09-04 17:44:21,111 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-04 17:44:21,111 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-04 17:44:21,111 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-09-04 17:44:21,111 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-09-04 17:44:21,112 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-09-04 17:44:21,112 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-04 17:44:21,113 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-09-04 17:44:21,114 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-04 17:44:21,114 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-09-04 17:44:21,114 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-09-04 17:44:21,115 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-04 17:44:21,115 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-09-04 17:44:21,115 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-04 17:44:21,115 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-04 17:44:21,116 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-04 17:44:21,517 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-04 17:44:21,517 INFO L295 CfgBuilder]: Removed 3 assume(true) statements. [2020-09-04 17:44:21,523 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.09 05:44:21 BoogieIcfgContainer [2020-09-04 17:44:21,523 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-04 17:44:21,524 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-04 17:44:21,524 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-04 17:44:21,528 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-04 17:44:21,528 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 04.09 05:44:20" (1/3) ... [2020-09-04 17:44:21,529 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@36eee207 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.09 05:44:21, skipping insertion in model container [2020-09-04 17:44:21,529 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 05:44:20" (2/3) ... [2020-09-04 17:44:21,530 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@36eee207 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.09 05:44:21, skipping insertion in model container [2020-09-04 17:44:21,530 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.09 05:44:21" (3/3) ... [2020-09-04 17:44:21,532 INFO L109 eAbstractionObserver]: Analyzing ICFG s52iff.c [2020-09-04 17:44:21,543 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-04 17:44:21,553 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-04 17:44:21,573 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-04 17:44:21,598 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-04 17:44:21,598 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-04 17:44:21,598 INFO L377 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2020-09-04 17:44:21,598 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-04 17:44:21,598 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-04 17:44:21,598 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-04 17:44:21,599 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-04 17:44:21,599 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-04 17:44:21,614 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states. [2020-09-04 17:44:21,626 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-09-04 17:44:21,626 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 17:44:21,627 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 17:44:21,628 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 17:44:21,633 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 17:44:21,634 INFO L82 PathProgramCache]: Analyzing trace with hash 350973390, now seen corresponding path program 1 times [2020-09-04 17:44:21,644 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 17:44:21,644 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [525721185] [2020-09-04 17:44:21,644 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 17:44:21,711 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 17:44:21,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:44:21,880 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 17:44:21,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:44:21,906 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-04 17:44:21,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:44:21,930 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 17:44:21,933 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [525721185] [2020-09-04 17:44:21,935 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 17:44:21,936 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-04 17:44:21,937 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2086321025] [2020-09-04 17:44:21,943 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-04 17:44:21,944 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 17:44:21,961 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-04 17:44:21,962 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-04 17:44:21,964 INFO L87 Difference]: Start difference. First operand 80 states. Second operand 3 states. [2020-09-04 17:44:22,180 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 17:44:22,180 INFO L93 Difference]: Finished difference Result 143 states and 162 transitions. [2020-09-04 17:44:22,181 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-04 17:44:22,182 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 33 [2020-09-04 17:44:22,183 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 17:44:22,195 INFO L225 Difference]: With dead ends: 143 [2020-09-04 17:44:22,195 INFO L226 Difference]: Without dead ends: 68 [2020-09-04 17:44:22,200 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 17:44:22,222 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2020-09-04 17:44:22,253 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 68. [2020-09-04 17:44:22,255 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 68 states. [2020-09-04 17:44:22,257 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 72 transitions. [2020-09-04 17:44:22,259 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 72 transitions. Word has length 33 [2020-09-04 17:44:22,259 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 17:44:22,260 INFO L479 AbstractCegarLoop]: Abstraction has 68 states and 72 transitions. [2020-09-04 17:44:22,260 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-04 17:44:22,260 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 72 transitions. [2020-09-04 17:44:22,261 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-09-04 17:44:22,262 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 17:44:22,262 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 17:44:22,262 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-04 17:44:22,263 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 17:44:22,263 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 17:44:22,263 INFO L82 PathProgramCache]: Analyzing trace with hash 1688115303, now seen corresponding path program 1 times [2020-09-04 17:44:22,263 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 17:44:22,264 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1179659262] [2020-09-04 17:44:22,264 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 17:44:22,275 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 17:44:22,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:44:22,431 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 17:44:22,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:44:22,441 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-04 17:44:22,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:44:22,458 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 17:44:22,458 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1179659262] [2020-09-04 17:44:22,459 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 17:44:22,459 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-04 17:44:22,459 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1292908216] [2020-09-04 17:44:22,461 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-04 17:44:22,461 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 17:44:22,462 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-04 17:44:22,462 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-04 17:44:22,462 INFO L87 Difference]: Start difference. First operand 68 states and 72 transitions. Second operand 5 states. [2020-09-04 17:44:22,737 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 17:44:22,738 INFO L93 Difference]: Finished difference Result 142 states and 154 transitions. [2020-09-04 17:44:22,738 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-04 17:44:22,738 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 33 [2020-09-04 17:44:22,739 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 17:44:22,741 INFO L225 Difference]: With dead ends: 142 [2020-09-04 17:44:22,741 INFO L226 Difference]: Without dead ends: 102 [2020-09-04 17:44:22,743 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 17:44:22,744 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102 states. [2020-09-04 17:44:22,758 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102 to 71. [2020-09-04 17:44:22,758 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 71 states. [2020-09-04 17:44:22,760 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 75 transitions. [2020-09-04 17:44:22,760 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 75 transitions. Word has length 33 [2020-09-04 17:44:22,760 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 17:44:22,761 INFO L479 AbstractCegarLoop]: Abstraction has 71 states and 75 transitions. [2020-09-04 17:44:22,761 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-04 17:44:22,761 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 75 transitions. [2020-09-04 17:44:22,763 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2020-09-04 17:44:22,763 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 17:44:22,763 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 17:44:22,763 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-04 17:44:22,764 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 17:44:22,764 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 17:44:22,764 INFO L82 PathProgramCache]: Analyzing trace with hash -1790069826, now seen corresponding path program 1 times [2020-09-04 17:44:22,764 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 17:44:22,765 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [336501328] [2020-09-04 17:44:22,765 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 17:44:22,798 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 17:44:22,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-04 17:44:22,843 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-09-04 17:44:22,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-04 17:44:22,879 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-09-04 17:44:22,925 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-09-04 17:44:22,926 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-09-04 17:44:22,930 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-04 17:44:22,970 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 04.09 05:44:22 BoogieIcfgContainer [2020-09-04 17:44:22,970 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-04 17:44:22,978 INFO L168 Benchmark]: Toolchain (without parser) took 2432.36 ms. Allocated memory was 141.0 MB in the beginning and 234.4 MB in the end (delta: 93.3 MB). Free memory was 102.3 MB in the beginning and 183.4 MB in the end (delta: -81.1 MB). Peak memory consumption was 12.2 MB. Max. memory is 7.1 GB. [2020-09-04 17:44:22,983 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 141.0 MB. Free memory was 121.0 MB in the beginning and 120.8 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-09-04 17:44:22,984 INFO L168 Benchmark]: CACSL2BoogieTranslator took 352.25 ms. Allocated memory is still 141.0 MB. Free memory was 102.1 MB in the beginning and 91.3 MB in the end (delta: 10.8 MB). Peak memory consumption was 10.8 MB. Max. memory is 7.1 GB. [2020-09-04 17:44:22,985 INFO L168 Benchmark]: Boogie Preprocessor took 135.88 ms. Allocated memory was 141.0 MB in the beginning and 202.9 MB in the end (delta: 61.9 MB). Free memory was 91.3 MB in the beginning and 180.3 MB in the end (delta: -89.0 MB). Peak memory consumption was 11.9 MB. Max. memory is 7.1 GB. [2020-09-04 17:44:22,986 INFO L168 Benchmark]: RCFGBuilder took 491.18 ms. Allocated memory is still 202.9 MB. Free memory was 180.3 MB in the beginning and 158.2 MB in the end (delta: 22.1 MB). Peak memory consumption was 22.1 MB. Max. memory is 7.1 GB. [2020-09-04 17:44:22,988 INFO L168 Benchmark]: TraceAbstraction took 1445.78 ms. Allocated memory was 202.9 MB in the beginning and 234.4 MB in the end (delta: 31.5 MB). Free memory was 158.2 MB in the beginning and 183.4 MB in the end (delta: -25.2 MB). Peak memory consumption was 6.3 MB. Max. memory is 7.1 GB. [2020-09-04 17:44:22,994 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 141.0 MB. Free memory was 121.0 MB in the beginning and 120.8 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 352.25 ms. Allocated memory is still 141.0 MB. Free memory was 102.1 MB in the beginning and 91.3 MB in the end (delta: 10.8 MB). Peak memory consumption was 10.8 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 135.88 ms. Allocated memory was 141.0 MB in the beginning and 202.9 MB in the end (delta: 61.9 MB). Free memory was 91.3 MB in the beginning and 180.3 MB in the end (delta: -89.0 MB). Peak memory consumption was 11.9 MB. Max. memory is 7.1 GB. * RCFGBuilder took 491.18 ms. Allocated memory is still 202.9 MB. Free memory was 180.3 MB in the beginning and 158.2 MB in the end (delta: 22.1 MB). Peak memory consumption was 22.1 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1445.78 ms. Allocated memory was 202.9 MB in the beginning and 234.4 MB in the end (delta: 31.5 MB). Free memory was 158.2 MB in the beginning and 183.4 MB in the end (delta: -25.2 MB). Peak memory consumption was 6.3 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] sum[0] = 1 [L30] i=0 [L30] COND TRUE i