/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 false -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/array-fpi/condaf.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-5644d1e-m [2020-08-18 15:35:06,561 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-18 15:35:06,564 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-18 15:35:06,594 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-18 15:35:06,595 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-18 15:35:06,603 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-18 15:35:06,606 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-18 15:35:06,610 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-18 15:35:06,613 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-18 15:35:06,616 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-18 15:35:06,617 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-18 15:35:06,618 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-18 15:35:06,618 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-18 15:35:06,621 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-18 15:35:06,624 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-18 15:35:06,625 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-18 15:35:06,627 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-18 15:35:06,628 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-18 15:35:06,630 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-18 15:35:06,638 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-18 15:35:06,641 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-18 15:35:06,642 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-18 15:35:06,643 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-18 15:35:06,644 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-18 15:35:06,660 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-08-18 15:35:06,665 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-18 15:35:06,668 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-18 15:35:06,669 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-18 15:35:06,670 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-18 15:35:06,673 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-18 15:35:06,673 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-18 15:35:06,674 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-18 15:35:06,674 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-18 15:35:06,674 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-18 15:35:06,676 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-18 15:35:06,677 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-18 15:35:06,678 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 15:35:06,719 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-18 15:35:06,720 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-18 15:35:06,722 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-18 15:35:06,722 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-18 15:35:06,722 INFO L138 SettingsManager]: * Use SBE=true [2020-08-18 15:35:06,723 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-18 15:35:06,723 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-18 15:35:06,723 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-18 15:35:06,723 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-18 15:35:06,724 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-18 15:35:06,724 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-18 15:35:06,725 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-18 15:35:06,725 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-18 15:35:06,725 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-18 15:35:06,726 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-18 15:35:06,726 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-18 15:35:06,726 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-18 15:35:06,726 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-18 15:35:06,726 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-18 15:35:06,726 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-18 15:35:06,727 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-18 15:35:06,727 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-18 15:35:06,727 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-18 15:35:06,727 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-18 15:35:06,727 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-18 15:35:06,728 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-18 15:35:06,728 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-18 15:35:06,728 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-18 15:35:06,728 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-18 15:35:06,728 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 -> false [2020-08-18 15:35:07,016 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-18 15:35:07,028 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-18 15:35:07,032 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-18 15:35:07,033 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-18 15:35:07,034 INFO L275 PluginConnector]: CDTParser initialized [2020-08-18 15:35:07,035 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-fpi/condaf.c [2020-08-18 15:35:07,099 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/add3609ab/2f4fc0cd569047c6aca6e15797cc387e/FLAG1eba5a622 [2020-08-18 15:35:07,598 INFO L306 CDTParser]: Found 1 translation units. [2020-08-18 15:35:07,599 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/array-fpi/condaf.c [2020-08-18 15:35:07,607 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/add3609ab/2f4fc0cd569047c6aca6e15797cc387e/FLAG1eba5a622 [2020-08-18 15:35:07,930 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/add3609ab/2f4fc0cd569047c6aca6e15797cc387e [2020-08-18 15:35:07,940 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-18 15:35:07,942 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-18 15:35:07,944 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-18 15:35:07,944 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-18 15:35:07,948 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-18 15:35:07,949 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.08 03:35:07" (1/1) ... [2020-08-18 15:35:07,952 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@fe964b5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 03:35:07, skipping insertion in model container [2020-08-18 15:35:07,952 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.08 03:35:07" (1/1) ... [2020-08-18 15:35:07,960 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-18 15:35:07,978 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-18 15:35:08,174 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-18 15:35:08,183 INFO L203 MainTranslator]: Completed pre-run [2020-08-18 15:35:08,206 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-18 15:35:08,304 INFO L208 MainTranslator]: Completed translation [2020-08-18 15:35:08,305 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 03:35:08 WrapperNode [2020-08-18 15:35:08,305 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-18 15:35:08,306 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-18 15:35:08,306 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-18 15:35:08,306 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-18 15:35:08,318 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 03:35:08" (1/1) ... [2020-08-18 15:35:08,318 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 03:35:08" (1/1) ... [2020-08-18 15:35:08,326 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 03:35:08" (1/1) ... [2020-08-18 15:35:08,327 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 03:35:08" (1/1) ... [2020-08-18 15:35:08,335 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 03:35:08" (1/1) ... [2020-08-18 15:35:08,341 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 03:35:08" (1/1) ... [2020-08-18 15:35:08,342 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 03:35:08" (1/1) ... [2020-08-18 15:35:08,347 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-18 15:35:08,347 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-18 15:35:08,347 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-18 15:35:08,347 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-18 15:35:08,349 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 03:35:08" (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 15:35:08,412 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-18 15:35:08,412 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-18 15:35:08,412 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-08-18 15:35:08,412 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-08-18 15:35:08,413 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-18 15:35:08,413 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-18 15:35:08,413 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-08-18 15:35:08,413 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-08-18 15:35:08,413 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-08-18 15:35:08,413 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-18 15:35:08,415 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-18 15:35:08,415 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-18 15:35:08,415 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-18 15:35:08,416 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-18 15:35:08,416 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-18 15:35:08,416 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-18 15:35:08,416 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-18 15:35:08,416 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-18 15:35:08,416 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-18 15:35:08,718 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-18 15:35:08,718 INFO L295 CfgBuilder]: Removed 3 assume(true) statements. [2020-08-18 15:35:08,723 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.08 03:35:08 BoogieIcfgContainer [2020-08-18 15:35:08,724 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-18 15:35:08,734 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-18 15:35:08,734 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-18 15:35:08,737 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-18 15:35:08,745 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.08 03:35:07" (1/3) ... [2020-08-18 15:35:08,746 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@50270993 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.08 03:35:08, skipping insertion in model container [2020-08-18 15:35:08,746 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 03:35:08" (2/3) ... [2020-08-18 15:35:08,748 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@50270993 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.08 03:35:08, skipping insertion in model container [2020-08-18 15:35:08,749 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.08 03:35:08" (3/3) ... [2020-08-18 15:35:08,750 INFO L109 eAbstractionObserver]: Analyzing ICFG condaf.c [2020-08-18 15:35:08,777 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-18 15:35:08,789 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-18 15:35:08,804 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-18 15:35:08,824 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-18 15:35:08,824 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-18 15:35:08,824 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-18 15:35:08,824 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-18 15:35:08,824 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-18 15:35:08,824 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-18 15:35:08,824 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-18 15:35:08,825 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-18 15:35:08,841 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states. [2020-08-18 15:35:08,846 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-08-18 15:35:08,847 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 15:35:08,847 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] [2020-08-18 15:35:08,848 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 15:35:08,854 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 15:35:08,854 INFO L82 PathProgramCache]: Analyzing trace with hash -88121349, now seen corresponding path program 1 times [2020-08-18 15:35:08,861 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 15:35:08,862 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2048341975] [2020-08-18 15:35:08,862 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 15:35:08,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:35:09,043 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 15:35:09,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:35:09,053 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-08-18 15:35:09,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:35:09,062 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 15:35:09,063 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2048341975] [2020-08-18 15:35:09,065 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 15:35:09,065 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-18 15:35:09,066 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [134073917] [2020-08-18 15:35:09,072 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-18 15:35:09,072 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 15:35:09,086 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-18 15:35:09,087 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-18 15:35:09,090 INFO L87 Difference]: Start difference. First operand 35 states. Second operand 3 states. [2020-08-18 15:35:09,210 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 15:35:09,211 INFO L93 Difference]: Finished difference Result 60 states and 77 transitions. [2020-08-18 15:35:09,211 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-18 15:35:09,213 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 23 [2020-08-18 15:35:09,214 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 15:35:09,222 INFO L225 Difference]: With dead ends: 60 [2020-08-18 15:35:09,223 INFO L226 Difference]: Without dead ends: 28 [2020-08-18 15:35:09,227 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 15:35:09,247 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2020-08-18 15:35:09,268 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2020-08-18 15:35:09,269 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2020-08-18 15:35:09,271 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 31 transitions. [2020-08-18 15:35:09,273 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 31 transitions. Word has length 23 [2020-08-18 15:35:09,273 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 15:35:09,273 INFO L479 AbstractCegarLoop]: Abstraction has 28 states and 31 transitions. [2020-08-18 15:35:09,274 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-18 15:35:09,274 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 31 transitions. [2020-08-18 15:35:09,275 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-08-18 15:35:09,275 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 15:35:09,275 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] [2020-08-18 15:35:09,276 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-18 15:35:09,276 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 15:35:09,276 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 15:35:09,276 INFO L82 PathProgramCache]: Analyzing trace with hash -1099238599, now seen corresponding path program 1 times [2020-08-18 15:35:09,277 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 15:35:09,277 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2074362303] [2020-08-18 15:35:09,277 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 15:35:09,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:35:09,397 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 15:35:09,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:35:09,405 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-08-18 15:35:09,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:35:09,414 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 15:35:09,415 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2074362303] [2020-08-18 15:35:09,415 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 15:35:09,415 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-18 15:35:09,416 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [231463722] [2020-08-18 15:35:09,417 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-18 15:35:09,418 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 15:35:09,418 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-18 15:35:09,418 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-08-18 15:35:09,419 INFO L87 Difference]: Start difference. First operand 28 states and 31 transitions. Second operand 5 states. [2020-08-18 15:35:09,552 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 15:35:09,553 INFO L93 Difference]: Finished difference Result 48 states and 57 transitions. [2020-08-18 15:35:09,553 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-08-18 15:35:09,553 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 23 [2020-08-18 15:35:09,554 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 15:35:09,555 INFO L225 Difference]: With dead ends: 48 [2020-08-18 15:35:09,555 INFO L226 Difference]: Without dead ends: 35 [2020-08-18 15:35:09,556 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 15:35:09,557 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2020-08-18 15:35:09,563 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 31. [2020-08-18 15:35:09,564 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2020-08-18 15:35:09,565 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 34 transitions. [2020-08-18 15:35:09,565 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 34 transitions. Word has length 23 [2020-08-18 15:35:09,565 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 15:35:09,565 INFO L479 AbstractCegarLoop]: Abstraction has 31 states and 34 transitions. [2020-08-18 15:35:09,566 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-18 15:35:09,566 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 34 transitions. [2020-08-18 15:35:09,567 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-08-18 15:35:09,567 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 15:35:09,567 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 15:35:09,568 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-18 15:35:09,568 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 15:35:09,568 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 15:35:09,568 INFO L82 PathProgramCache]: Analyzing trace with hash 188437731, now seen corresponding path program 1 times [2020-08-18 15:35:09,569 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 15:35:09,569 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1635874256] [2020-08-18 15:35:09,569 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 15:35:09,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:35:09,939 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 15:35:09,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:35:09,944 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-08-18 15:35:09,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:35:09,951 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-08-18 15:35:09,951 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1635874256] [2020-08-18 15:35:09,952 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-18 15:35:09,952 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-08-18 15:35:09,952 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [11496973] [2020-08-18 15:35:09,953 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-18 15:35:09,953 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 15:35:09,953 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-18 15:35:09,954 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-08-18 15:35:09,954 INFO L87 Difference]: Start difference. First operand 31 states and 34 transitions. Second operand 9 states. [2020-08-18 15:35:10,132 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 15:35:10,132 INFO L93 Difference]: Finished difference Result 50 states and 57 transitions. [2020-08-18 15:35:10,132 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-08-18 15:35:10,133 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 30 [2020-08-18 15:35:10,133 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 15:35:10,134 INFO L225 Difference]: With dead ends: 50 [2020-08-18 15:35:10,134 INFO L226 Difference]: Without dead ends: 37 [2020-08-18 15:35:10,135 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2020-08-18 15:35:10,135 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2020-08-18 15:35:10,141 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 32. [2020-08-18 15:35:10,142 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2020-08-18 15:35:10,143 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 35 transitions. [2020-08-18 15:35:10,143 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 35 transitions. Word has length 30 [2020-08-18 15:35:10,143 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 15:35:10,143 INFO L479 AbstractCegarLoop]: Abstraction has 32 states and 35 transitions. [2020-08-18 15:35:10,144 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-18 15:35:10,144 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 35 transitions. [2020-08-18 15:35:10,145 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-08-18 15:35:10,145 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 15:35:10,145 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 15:35:10,145 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-18 15:35:10,146 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 15:35:10,146 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 15:35:10,146 INFO L82 PathProgramCache]: Analyzing trace with hash 446603169, now seen corresponding path program 1 times [2020-08-18 15:35:10,146 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 15:35:10,147 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1967252955] [2020-08-18 15:35:10,147 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 15:35:10,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-18 15:35:10,180 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-08-18 15:35:10,180 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-08-18 15:35:10,184 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-18 15:35:10,211 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.08 03:35:10 BoogieIcfgContainer [2020-08-18 15:35:10,212 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-18 15:35:10,217 INFO L168 Benchmark]: Toolchain (without parser) took 2271.76 ms. Allocated memory was 139.5 MB in the beginning and 235.9 MB in the end (delta: 96.5 MB). Free memory was 102.2 MB in the beginning and 167.5 MB in the end (delta: -65.3 MB). Peak memory consumption was 31.2 MB. Max. memory is 7.1 GB. [2020-08-18 15:35:10,219 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 139.5 MB. Free memory was 121.0 MB in the beginning and 120.7 MB in the end (delta: 209.7 kB). Peak memory consumption was 209.7 kB. Max. memory is 7.1 GB. [2020-08-18 15:35:10,220 INFO L168 Benchmark]: CACSL2BoogieTranslator took 361.41 ms. Allocated memory was 139.5 MB in the beginning and 202.9 MB in the end (delta: 63.4 MB). Free memory was 102.0 MB in the beginning and 181.8 MB in the end (delta: -79.8 MB). Peak memory consumption was 22.4 MB. Max. memory is 7.1 GB. [2020-08-18 15:35:10,223 INFO L168 Benchmark]: Boogie Preprocessor took 41.07 ms. Allocated memory is still 202.9 MB. Free memory was 181.8 MB in the beginning and 179.1 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 7.1 GB. [2020-08-18 15:35:10,225 INFO L168 Benchmark]: RCFGBuilder took 376.56 ms. Allocated memory is still 202.9 MB. Free memory was 179.1 MB in the beginning and 161.4 MB in the end (delta: 17.6 MB). Peak memory consumption was 17.6 MB. Max. memory is 7.1 GB. [2020-08-18 15:35:10,233 INFO L168 Benchmark]: TraceAbstraction took 1477.99 ms. Allocated memory was 202.9 MB in the beginning and 235.9 MB in the end (delta: 33.0 MB). Free memory was 160.8 MB in the beginning and 167.5 MB in the end (delta: -6.7 MB). Peak memory consumption was 26.3 MB. Max. memory is 7.1 GB. [2020-08-18 15:35:10,245 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 139.5 MB. Free memory was 121.0 MB in the beginning and 120.7 MB in the end (delta: 209.7 kB). Peak memory consumption was 209.7 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 361.41 ms. Allocated memory was 139.5 MB in the beginning and 202.9 MB in the end (delta: 63.4 MB). Free memory was 102.0 MB in the beginning and 181.8 MB in the end (delta: -79.8 MB). Peak memory consumption was 22.4 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 41.07 ms. Allocated memory is still 202.9 MB. Free memory was 181.8 MB in the beginning and 179.1 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 7.1 GB. * RCFGBuilder took 376.56 ms. Allocated memory is still 202.9 MB. Free memory was 179.1 MB in the beginning and 161.4 MB in the end (delta: 17.6 MB). Peak memory consumption was 17.6 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1477.99 ms. Allocated memory was 202.9 MB in the beginning and 235.9 MB in the end (delta: 33.0 MB). Free memory was 160.8 MB in the beginning and 167.5 MB in the end (delta: -6.7 MB). Peak memory consumption was 26.3 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] int sum[1]; [L27] int *a = malloc(sizeof(int)*N); [L29] sum[0] = 0 [L30] i=0 [L30] COND TRUE i