/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 interpolation-heuristic=FIRST --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/array-fpi/res1of.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-177f698 [2020-08-21 15:02:23,345 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-21 15:02:23,349 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-21 15:02:23,391 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-21 15:02:23,392 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-21 15:02:23,404 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-21 15:02:23,406 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-21 15:02:23,409 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-21 15:02:23,412 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-21 15:02:23,415 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-21 15:02:23,416 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-21 15:02:23,419 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-21 15:02:23,419 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-21 15:02:23,422 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-21 15:02:23,425 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-21 15:02:23,426 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-21 15:02:23,428 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-21 15:02:23,430 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-21 15:02:23,432 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-21 15:02:23,439 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-21 15:02:23,442 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-21 15:02:23,443 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-21 15:02:23,445 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-21 15:02:23,445 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-21 15:02:23,451 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-08-21 15:02:23,461 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-21 15:02:23,462 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-21 15:02:23,463 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-21 15:02:23,464 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 [2020-08-21 15:02:23,511 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-21 15:02:23,511 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-21 15:02:23,513 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-21 15:02:23,513 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-21 15:02:23,514 INFO L138 SettingsManager]: * Use SBE=true [2020-08-21 15:02:23,514 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-21 15:02:23,514 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-21 15:02:23,515 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-21 15:02:23,515 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-21 15:02:23,515 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-21 15:02:23,516 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-21 15:02:23,516 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-21 15:02:23,516 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-21 15:02:23,517 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-21 15:02:23,517 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-21 15:02:23,517 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-21 15:02:23,518 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-21 15:02:23,518 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-21 15:02:23,518 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-21 15:02:23,518 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-21 15:02:23,518 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-21 15:02:23,519 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-21 15:02:23,519 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-21 15:02:23,519 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-21 15:02:23,519 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-21 15:02:23,519 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-21 15:02:23,520 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-21 15:02:23,520 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-21 15:02:23,520 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-21 15:02:23,520 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 -> interpolation-heuristic=FIRST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> interpolation-heuristic=FIRST;log-additional-information=true; [2020-08-21 15:02:23,807 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-21 15:02:23,820 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-21 15:02:23,825 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-21 15:02:23,827 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-21 15:02:23,828 INFO L275 PluginConnector]: CDTParser initialized [2020-08-21 15:02:23,829 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-fpi/res1of.c [2020-08-21 15:02:23,890 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/d865aa803/d99bb8afbc67439585e581e3bf2495e5/FLAG19f7053b5 [2020-08-21 15:02:24,364 INFO L306 CDTParser]: Found 1 translation units. [2020-08-21 15:02:24,365 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/array-fpi/res1of.c [2020-08-21 15:02:24,372 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/d865aa803/d99bb8afbc67439585e581e3bf2495e5/FLAG19f7053b5 [2020-08-21 15:02:24,728 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/d865aa803/d99bb8afbc67439585e581e3bf2495e5 [2020-08-21 15:02:24,738 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-21 15:02:24,740 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-21 15:02:24,741 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-21 15:02:24,741 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-21 15:02:24,745 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-21 15:02:24,746 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.08 03:02:24" (1/1) ... [2020-08-21 15:02:24,749 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@260ceee4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 03:02:24, skipping insertion in model container [2020-08-21 15:02:24,749 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.08 03:02:24" (1/1) ... [2020-08-21 15:02:24,756 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-21 15:02:24,773 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-21 15:02:24,943 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-21 15:02:24,951 INFO L203 MainTranslator]: Completed pre-run [2020-08-21 15:02:24,970 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-21 15:02:24,983 INFO L208 MainTranslator]: Completed translation [2020-08-21 15:02:24,983 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 03:02:24 WrapperNode [2020-08-21 15:02:24,984 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-21 15:02:24,984 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-21 15:02:24,985 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-21 15:02:24,985 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-21 15:02:25,073 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 03:02:24" (1/1) ... [2020-08-21 15:02:25,073 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 03:02:24" (1/1) ... [2020-08-21 15:02:25,081 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 03:02:24" (1/1) ... [2020-08-21 15:02:25,081 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 03:02:24" (1/1) ... [2020-08-21 15:02:25,090 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 03:02:24" (1/1) ... [2020-08-21 15:02:25,096 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 03:02:24" (1/1) ... [2020-08-21 15:02:25,098 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 03:02:24" (1/1) ... [2020-08-21 15:02:25,100 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-21 15:02:25,101 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-21 15:02:25,101 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-21 15:02:25,101 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-21 15:02:25,102 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 03:02:24" (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 [2020-08-21 15:02:25,171 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-21 15:02:25,172 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-21 15:02:25,172 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-08-21 15:02:25,172 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-08-21 15:02:25,173 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-21 15:02:25,173 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-21 15:02:25,174 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-08-21 15:02:25,174 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-08-21 15:02:25,174 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-08-21 15:02:25,174 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-21 15:02:25,175 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-21 15:02:25,175 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-21 15:02:25,175 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-21 15:02:25,176 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-21 15:02:25,176 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-21 15:02:25,178 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-21 15:02:25,178 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-21 15:02:25,179 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-21 15:02:25,179 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-21 15:02:25,519 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-21 15:02:25,523 INFO L295 CfgBuilder]: Removed 4 assume(true) statements. [2020-08-21 15:02:25,533 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.08 03:02:25 BoogieIcfgContainer [2020-08-21 15:02:25,533 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-21 15:02:25,534 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-21 15:02:25,534 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-21 15:02:25,542 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-21 15:02:25,543 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.08 03:02:24" (1/3) ... [2020-08-21 15:02:25,543 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@16186a15 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.08 03:02:25, skipping insertion in model container [2020-08-21 15:02:25,544 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 03:02:24" (2/3) ... [2020-08-21 15:02:25,544 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@16186a15 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.08 03:02:25, skipping insertion in model container [2020-08-21 15:02:25,544 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.08 03:02:25" (3/3) ... [2020-08-21 15:02:25,546 INFO L109 eAbstractionObserver]: Analyzing ICFG res1of.c [2020-08-21 15:02:25,554 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-21 15:02:25,560 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-21 15:02:25,573 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-21 15:02:25,593 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-21 15:02:25,593 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-21 15:02:25,593 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-21 15:02:25,593 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-21 15:02:25,593 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-21 15:02:25,593 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-21 15:02:25,593 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-21 15:02:25,594 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-21 15:02:25,613 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states. [2020-08-21 15:02:25,619 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-08-21 15:02:25,619 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 15:02:25,620 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] [2020-08-21 15:02:25,621 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 15:02:25,625 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 15:02:25,626 INFO L82 PathProgramCache]: Analyzing trace with hash 1562148239, now seen corresponding path program 1 times [2020-08-21 15:02:25,634 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 15:02:25,634 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [307492624] [2020-08-21 15:02:25,635 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 15:02:25,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:02:25,829 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 15:02:25,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:02:25,840 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-08-21 15:02:25,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:02:25,849 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 15:02:25,850 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [307492624] [2020-08-21 15:02:25,852 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 15:02:25,853 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-21 15:02:25,854 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [995214023] [2020-08-21 15:02:25,859 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-21 15:02:25,859 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 15:02:25,873 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-21 15:02:25,874 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-21 15:02:25,876 INFO L87 Difference]: Start difference. First operand 37 states. Second operand 3 states. [2020-08-21 15:02:26,034 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 15:02:26,034 INFO L93 Difference]: Finished difference Result 64 states and 83 transitions. [2020-08-21 15:02:26,035 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-21 15:02:26,037 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 25 [2020-08-21 15:02:26,037 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 15:02:26,046 INFO L225 Difference]: With dead ends: 64 [2020-08-21 15:02:26,047 INFO L226 Difference]: Without dead ends: 30 [2020-08-21 15:02:26,051 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 [2020-08-21 15:02:26,070 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2020-08-21 15:02:26,091 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 30. [2020-08-21 15:02:26,093 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2020-08-21 15:02:26,094 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 33 transitions. [2020-08-21 15:02:26,096 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 33 transitions. Word has length 25 [2020-08-21 15:02:26,096 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 15:02:26,096 INFO L479 AbstractCegarLoop]: Abstraction has 30 states and 33 transitions. [2020-08-21 15:02:26,097 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-21 15:02:26,097 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 33 transitions. [2020-08-21 15:02:26,098 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-08-21 15:02:26,098 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 15:02:26,098 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] [2020-08-21 15:02:26,099 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-21 15:02:26,099 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 15:02:26,099 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 15:02:26,100 INFO L82 PathProgramCache]: Analyzing trace with hash 369304979, now seen corresponding path program 1 times [2020-08-21 15:02:26,100 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 15:02:26,101 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1749908075] [2020-08-21 15:02:26,101 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 15:02:26,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:02:26,227 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 15:02:26,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:02:26,250 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-08-21 15:02:26,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:02:26,260 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 15:02:26,261 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1749908075] [2020-08-21 15:02:26,261 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 15:02:26,261 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-21 15:02:26,261 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1424252241] [2020-08-21 15:02:26,263 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-21 15:02:26,264 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 15:02:26,264 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-21 15:02:26,264 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-08-21 15:02:26,265 INFO L87 Difference]: Start difference. First operand 30 states and 33 transitions. Second operand 5 states. [2020-08-21 15:02:26,398 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 15:02:26,399 INFO L93 Difference]: Finished difference Result 53 states and 62 transitions. [2020-08-21 15:02:26,399 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-08-21 15:02:26,399 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 25 [2020-08-21 15:02:26,400 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 15:02:26,401 INFO L225 Difference]: With dead ends: 53 [2020-08-21 15:02:26,401 INFO L226 Difference]: Without dead ends: 38 [2020-08-21 15:02:26,402 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 [2020-08-21 15:02:26,403 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2020-08-21 15:02:26,410 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 34. [2020-08-21 15:02:26,411 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2020-08-21 15:02:26,412 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 37 transitions. [2020-08-21 15:02:26,412 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 37 transitions. Word has length 25 [2020-08-21 15:02:26,413 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 15:02:26,413 INFO L479 AbstractCegarLoop]: Abstraction has 34 states and 37 transitions. [2020-08-21 15:02:26,413 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-21 15:02:26,413 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 37 transitions. [2020-08-21 15:02:26,414 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-08-21 15:02:26,414 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 15:02:26,415 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] [2020-08-21 15:02:26,415 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-21 15:02:26,415 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 15:02:26,416 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 15:02:26,416 INFO L82 PathProgramCache]: Analyzing trace with hash -1815337701, now seen corresponding path program 1 times [2020-08-21 15:02:26,416 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 15:02:26,417 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1685418348] [2020-08-21 15:02:26,417 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 15:02:26,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-21 15:02:26,478 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-08-21 15:02:26,479 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-08-21 15:02:26,483 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-21 15:02:26,505 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.08 03:02:26 BoogieIcfgContainer [2020-08-21 15:02:26,505 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-21 15:02:26,508 INFO L168 Benchmark]: Toolchain (without parser) took 1767.67 ms. Allocated memory was 141.6 MB in the beginning and 204.5 MB in the end (delta: 62.9 MB). Free memory was 105.1 MB in the beginning and 105.6 MB in the end (delta: -441.8 kB). Peak memory consumption was 62.5 MB. Max. memory is 7.1 GB. [2020-08-21 15:02:26,509 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 141.6 MB. Free memory was 123.1 MB in the beginning and 122.9 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-08-21 15:02:26,510 INFO L168 Benchmark]: CACSL2BoogieTranslator took 243.20 ms. Allocated memory is still 141.6 MB. Free memory was 104.9 MB in the beginning and 94.4 MB in the end (delta: 10.5 MB). Peak memory consumption was 10.5 MB. Max. memory is 7.1 GB. [2020-08-21 15:02:26,511 INFO L168 Benchmark]: Boogie Preprocessor took 115.92 ms. Allocated memory was 141.6 MB in the beginning and 204.5 MB in the end (delta: 62.9 MB). Free memory was 94.2 MB in the beginning and 181.8 MB in the end (delta: -87.6 MB). Peak memory consumption was 12.5 MB. Max. memory is 7.1 GB. [2020-08-21 15:02:26,512 INFO L168 Benchmark]: RCFGBuilder took 432.38 ms. Allocated memory is still 204.5 MB. Free memory was 181.8 MB in the beginning and 164.0 MB in the end (delta: 17.9 MB). Peak memory consumption was 17.9 MB. Max. memory is 7.1 GB. [2020-08-21 15:02:26,513 INFO L168 Benchmark]: TraceAbstraction took 971.34 ms. Allocated memory is still 204.5 MB. Free memory was 163.3 MB in the beginning and 105.6 MB in the end (delta: 57.7 MB). Peak memory consumption was 57.7 MB. Max. memory is 7.1 GB. [2020-08-21 15:02:26,517 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 141.6 MB. Free memory was 123.1 MB in the beginning and 122.9 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 243.20 ms. Allocated memory is still 141.6 MB. Free memory was 104.9 MB in the beginning and 94.4 MB in the end (delta: 10.5 MB). Peak memory consumption was 10.5 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 115.92 ms. Allocated memory was 141.6 MB in the beginning and 204.5 MB in the end (delta: 62.9 MB). Free memory was 94.2 MB in the beginning and 181.8 MB in the end (delta: -87.6 MB). Peak memory consumption was 12.5 MB. Max. memory is 7.1 GB. * RCFGBuilder took 432.38 ms. Allocated memory is still 204.5 MB. Free memory was 181.8 MB in the beginning and 164.0 MB in the end (delta: 17.9 MB). Peak memory consumption was 17.9 MB. Max. memory is 7.1 GB. * TraceAbstraction took 971.34 ms. Allocated memory is still 204.5 MB. Free memory was 163.3 MB in the beginning and 105.6 MB in the end (delta: 57.7 MB). Peak memory consumption was 57.7 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); [L28] int *b = malloc(sizeof(int)*N); [L30] sum[0] = 0 [L31] i=0 [L31] COND TRUE i