/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 --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options enumeration-timeout=5 --traceabstraction.additional.smt.options interpolation-heuristic=BIGGEST -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/array-fpi/sina5f.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-5644d1e-m [2020-08-18 18:00:18,674 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-18 18:00:18,676 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-18 18:00:18,721 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-18 18:00:18,721 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-18 18:00:18,732 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-18 18:00:18,734 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-18 18:00:18,738 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-18 18:00:18,740 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-18 18:00:18,741 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-18 18:00:18,742 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-18 18:00:18,745 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-18 18:00:18,745 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-18 18:00:18,746 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-18 18:00:18,749 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-18 18:00:18,752 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-18 18:00:18,752 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-18 18:00:18,757 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-18 18:00:18,759 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-18 18:00:18,761 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-18 18:00:18,764 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-18 18:00:18,764 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-18 18:00:18,765 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-18 18:00:18,768 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-18 18:00:18,775 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-08-18 18:00:18,781 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-18 18:00:18,784 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-18 18:00:18,784 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-18 18:00:18,785 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-18 18:00:18,786 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-18 18:00:18,786 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-18 18:00:18,787 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-18 18:00:18,787 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-18 18:00:18,787 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-18 18:00:18,791 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-18 18:00:18,792 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-18 18:00:18,793 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-08-18 18:00:18,840 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-18 18:00:18,843 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-18 18:00:18,844 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-18 18:00:18,844 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-18 18:00:18,844 INFO L138 SettingsManager]: * Use SBE=true [2020-08-18 18:00:18,845 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-18 18:00:18,845 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-18 18:00:18,845 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-18 18:00:18,846 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-18 18:00:18,846 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-18 18:00:18,847 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-18 18:00:18,847 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-18 18:00:18,847 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-18 18:00:18,848 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-18 18:00:18,848 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-18 18:00:18,848 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-18 18:00:18,848 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-18 18:00:18,848 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-18 18:00:18,849 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-18 18:00:18,849 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-18 18:00:18,849 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-18 18:00:18,849 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-18 18:00:18,849 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-18 18:00:18,850 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-18 18:00:18,850 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-18 18:00:18,850 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-18 18:00:18,850 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-18 18:00:18,850 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-18 18:00:18,850 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-18 18:00:18,851 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=BIGGEST; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=BIGGEST; [2020-08-18 18:00:19,177 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-18 18:00:19,198 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-18 18:00:19,204 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-18 18:00:19,205 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-18 18:00:19,206 INFO L275 PluginConnector]: CDTParser initialized [2020-08-18 18:00:19,207 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-fpi/sina5f.c [2020-08-18 18:00:19,278 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/775c3de5d/94721544cfcb47fcbdc54179140467f0/FLAG655356dac [2020-08-18 18:00:19,692 INFO L306 CDTParser]: Found 1 translation units. [2020-08-18 18:00:19,693 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/array-fpi/sina5f.c [2020-08-18 18:00:19,703 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/775c3de5d/94721544cfcb47fcbdc54179140467f0/FLAG655356dac [2020-08-18 18:00:20,063 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/775c3de5d/94721544cfcb47fcbdc54179140467f0 [2020-08-18 18:00:20,070 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-18 18:00:20,072 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-18 18:00:20,073 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-18 18:00:20,073 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-18 18:00:20,076 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-18 18:00:20,076 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.08 06:00:20" (1/1) ... [2020-08-18 18:00:20,080 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@38567abb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 06:00:20, skipping insertion in model container [2020-08-18 18:00:20,080 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.08 06:00:20" (1/1) ... [2020-08-18 18:00:20,088 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-18 18:00:20,109 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-18 18:00:20,317 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-18 18:00:20,336 INFO L203 MainTranslator]: Completed pre-run [2020-08-18 18:00:20,384 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-18 18:00:20,504 INFO L208 MainTranslator]: Completed translation [2020-08-18 18:00:20,506 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 06:00:20 WrapperNode [2020-08-18 18:00:20,506 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-18 18:00:20,507 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-18 18:00:20,507 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-18 18:00:20,507 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-18 18:00:20,520 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 06:00:20" (1/1) ... [2020-08-18 18:00:20,521 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 06:00:20" (1/1) ... [2020-08-18 18:00:20,542 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 06:00:20" (1/1) ... [2020-08-18 18:00:20,543 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 06:00:20" (1/1) ... [2020-08-18 18:00:20,554 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 06:00:20" (1/1) ... [2020-08-18 18:00:20,561 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 06:00:20" (1/1) ... [2020-08-18 18:00:20,563 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 06:00:20" (1/1) ... [2020-08-18 18:00:20,565 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-18 18:00:20,566 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-18 18:00:20,566 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-18 18:00:20,566 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-18 18:00:20,567 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 06:00:20" (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 [2020-08-18 18:00:20,633 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-18 18:00:20,633 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-18 18:00:20,633 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-08-18 18:00:20,634 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-08-18 18:00:20,634 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-18 18:00:20,634 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-18 18:00:20,634 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-08-18 18:00:20,634 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-08-18 18:00:20,634 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-08-18 18:00:20,635 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-18 18:00:20,635 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-18 18:00:20,635 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-18 18:00:20,635 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-18 18:00:20,635 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-18 18:00:20,635 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-18 18:00:20,636 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-18 18:00:20,636 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-18 18:00:20,636 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-18 18:00:20,636 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-18 18:00:20,968 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-18 18:00:20,969 INFO L295 CfgBuilder]: Removed 6 assume(true) statements. [2020-08-18 18:00:20,986 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.08 06:00:20 BoogieIcfgContainer [2020-08-18 18:00:20,986 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-18 18:00:20,996 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-18 18:00:20,996 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-18 18:00:21,001 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-18 18:00:21,001 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.08 06:00:20" (1/3) ... [2020-08-18 18:00:21,002 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@64e33614 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.08 06:00:21, skipping insertion in model container [2020-08-18 18:00:21,002 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 06:00:20" (2/3) ... [2020-08-18 18:00:21,003 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@64e33614 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.08 06:00:21, skipping insertion in model container [2020-08-18 18:00:21,003 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.08 06:00:20" (3/3) ... [2020-08-18 18:00:21,004 INFO L109 eAbstractionObserver]: Analyzing ICFG sina5f.c [2020-08-18 18:00:21,016 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-18 18:00:21,025 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-18 18:00:21,042 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-18 18:00:21,069 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-18 18:00:21,069 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-18 18:00:21,070 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-18 18:00:21,070 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-18 18:00:21,070 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-18 18:00:21,070 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-18 18:00:21,070 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-18 18:00:21,070 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-18 18:00:21,100 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states. [2020-08-18 18:00:21,107 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-08-18 18:00:21,107 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 18:00:21,108 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] [2020-08-18 18:00:21,109 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 18:00:21,115 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 18:00:21,115 INFO L82 PathProgramCache]: Analyzing trace with hash 1994596369, now seen corresponding path program 1 times [2020-08-18 18:00:21,125 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 18:00:21,125 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [238591848] [2020-08-18 18:00:21,126 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 18:00:21,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:00:21,336 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 18:00:21,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:00:21,347 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-08-18 18:00:21,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:00:21,358 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 18:00:21,359 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [238591848] [2020-08-18 18:00:21,361 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 18:00:21,361 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-18 18:00:21,362 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1361009371] [2020-08-18 18:00:21,369 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-18 18:00:21,370 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 18:00:21,384 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-18 18:00:21,385 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-18 18:00:21,388 INFO L87 Difference]: Start difference. First operand 43 states. Second operand 3 states. [2020-08-18 18:00:21,525 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 18:00:21,525 INFO L93 Difference]: Finished difference Result 76 states and 103 transitions. [2020-08-18 18:00:21,526 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-18 18:00:21,527 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 28 [2020-08-18 18:00:21,528 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 18:00:21,536 INFO L225 Difference]: With dead ends: 76 [2020-08-18 18:00:21,537 INFO L226 Difference]: Without dead ends: 38 [2020-08-18 18:00:21,540 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-18 18:00:21,557 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2020-08-18 18:00:21,579 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 38. [2020-08-18 18:00:21,580 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2020-08-18 18:00:21,582 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 43 transitions. [2020-08-18 18:00:21,584 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 43 transitions. Word has length 28 [2020-08-18 18:00:21,584 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 18:00:21,584 INFO L479 AbstractCegarLoop]: Abstraction has 38 states and 43 transitions. [2020-08-18 18:00:21,585 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-18 18:00:21,585 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 43 transitions. [2020-08-18 18:00:21,586 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-08-18 18:00:21,586 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 18:00:21,587 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] [2020-08-18 18:00:21,587 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-18 18:00:21,587 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 18:00:21,588 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 18:00:21,588 INFO L82 PathProgramCache]: Analyzing trace with hash 1530390023, now seen corresponding path program 1 times [2020-08-18 18:00:21,588 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 18:00:21,589 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [901947099] [2020-08-18 18:00:21,589 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 18:00:21,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:00:21,699 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 18:00:21,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:00:21,706 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-08-18 18:00:21,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:00:21,717 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 18:00:21,717 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [901947099] [2020-08-18 18:00:21,718 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 18:00:21,718 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-18 18:00:21,718 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [920626371] [2020-08-18 18:00:21,720 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-18 18:00:21,720 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 18:00:21,721 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-18 18:00:21,721 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-08-18 18:00:21,721 INFO L87 Difference]: Start difference. First operand 38 states and 43 transitions. Second operand 5 states. [2020-08-18 18:00:21,913 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 18:00:21,913 INFO L93 Difference]: Finished difference Result 75 states and 90 transitions. [2020-08-18 18:00:21,914 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-08-18 18:00:21,914 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 28 [2020-08-18 18:00:21,915 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 18:00:21,918 INFO L225 Difference]: With dead ends: 75 [2020-08-18 18:00:21,918 INFO L226 Difference]: Without dead ends: 52 [2020-08-18 18:00:21,919 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 [2020-08-18 18:00:21,920 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2020-08-18 18:00:21,934 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 43. [2020-08-18 18:00:21,935 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2020-08-18 18:00:21,936 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 48 transitions. [2020-08-18 18:00:21,936 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 48 transitions. Word has length 28 [2020-08-18 18:00:21,937 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 18:00:21,937 INFO L479 AbstractCegarLoop]: Abstraction has 43 states and 48 transitions. [2020-08-18 18:00:21,937 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-18 18:00:21,937 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 48 transitions. [2020-08-18 18:00:21,939 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2020-08-18 18:00:21,939 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 18:00:21,939 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] [2020-08-18 18:00:21,940 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-18 18:00:21,940 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 18:00:21,940 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 18:00:21,940 INFO L82 PathProgramCache]: Analyzing trace with hash 1357692925, now seen corresponding path program 1 times [2020-08-18 18:00:21,941 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 18:00:21,941 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [437277572] [2020-08-18 18:00:21,941 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 18:00:22,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-18 18:00:22,011 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-08-18 18:00:22,012 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-08-18 18:00:22,017 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-18 18:00:22,038 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.08 06:00:22 BoogieIcfgContainer [2020-08-18 18:00:22,038 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-18 18:00:22,041 INFO L168 Benchmark]: Toolchain (without parser) took 1968.07 ms. Allocated memory was 139.5 MB in the beginning and 203.4 MB in the end (delta: 64.0 MB). Free memory was 101.7 MB in the beginning and 93.3 MB in the end (delta: 8.4 MB). Peak memory consumption was 72.3 MB. Max. memory is 7.1 GB. [2020-08-18 18:00:22,043 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 139.5 MB. Free memory was 119.7 MB in the beginning and 119.5 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-08-18 18:00:22,044 INFO L168 Benchmark]: CACSL2BoogieTranslator took 434.33 ms. Allocated memory was 139.5 MB in the beginning and 203.4 MB in the end (delta: 64.0 MB). Free memory was 101.3 MB in the beginning and 182.3 MB in the end (delta: -81.0 MB). Peak memory consumption was 22.6 MB. Max. memory is 7.1 GB. [2020-08-18 18:00:22,045 INFO L168 Benchmark]: Boogie Preprocessor took 58.23 ms. Allocated memory is still 203.4 MB. Free memory was 182.3 MB in the beginning and 179.9 MB in the end (delta: 2.4 MB). Peak memory consumption was 2.4 MB. Max. memory is 7.1 GB. [2020-08-18 18:00:22,046 INFO L168 Benchmark]: RCFGBuilder took 429.06 ms. Allocated memory is still 203.4 MB. Free memory was 179.9 MB in the beginning and 160.3 MB in the end (delta: 19.6 MB). Peak memory consumption was 19.6 MB. Max. memory is 7.1 GB. [2020-08-18 18:00:22,047 INFO L168 Benchmark]: TraceAbstraction took 1041.86 ms. Allocated memory is still 203.4 MB. Free memory was 159.6 MB in the beginning and 93.3 MB in the end (delta: 66.3 MB). Peak memory consumption was 66.3 MB. Max. memory is 7.1 GB. [2020-08-18 18:00:22,051 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 139.5 MB. Free memory was 119.7 MB in the beginning and 119.5 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 434.33 ms. Allocated memory was 139.5 MB in the beginning and 203.4 MB in the end (delta: 64.0 MB). Free memory was 101.3 MB in the beginning and 182.3 MB in the end (delta: -81.0 MB). Peak memory consumption was 22.6 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 58.23 ms. Allocated memory is still 203.4 MB. Free memory was 182.3 MB in the beginning and 179.9 MB in the end (delta: 2.4 MB). Peak memory consumption was 2.4 MB. Max. memory is 7.1 GB. * RCFGBuilder took 429.06 ms. Allocated memory is still 203.4 MB. Free memory was 179.9 MB in the beginning and 160.3 MB in the end (delta: 19.6 MB). Peak memory consumption was 19.6 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1041.86 ms. Allocated memory is still 203.4 MB. Free memory was 159.6 MB in the beginning and 93.3 MB in the end (delta: 66.3 MB). Peak memory consumption was 66.3 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] long long *a = malloc(sizeof(long long)*N); [L28] long long *b = malloc(sizeof(long long)*N); [L30] sum[0] = 0 [L31] i=0 [L31] COND TRUE i