/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=SHALLOWEST -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/array-fpi/brs1f.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-5644d1e-m [2020-08-18 20:24:44,644 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-18 20:24:44,647 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-18 20:24:44,689 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-18 20:24:44,690 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-18 20:24:44,703 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-18 20:24:44,704 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-18 20:24:44,707 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-18 20:24:44,709 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-18 20:24:44,711 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-18 20:24:44,712 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-18 20:24:44,715 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-18 20:24:44,715 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-18 20:24:44,719 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-18 20:24:44,719 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-18 20:24:44,720 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-18 20:24:44,723 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-18 20:24:44,725 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-18 20:24:44,727 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-18 20:24:44,730 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-18 20:24:44,731 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-18 20:24:44,735 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-18 20:24:44,736 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-18 20:24:44,737 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-18 20:24:44,740 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-08-18 20:24:44,750 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-18 20:24:44,751 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-18 20:24:44,753 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-18 20:24:44,753 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 20:24:44,795 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-18 20:24:44,795 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-18 20:24:44,797 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-18 20:24:44,797 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-18 20:24:44,798 INFO L138 SettingsManager]: * Use SBE=true [2020-08-18 20:24:44,798 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-18 20:24:44,798 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-18 20:24:44,798 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-18 20:24:44,798 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-18 20:24:44,799 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-18 20:24:44,799 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-18 20:24:44,800 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-18 20:24:44,800 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-18 20:24:44,801 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-18 20:24:44,801 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-18 20:24:44,801 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-18 20:24:44,801 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-18 20:24:44,801 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-18 20:24:44,802 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-18 20:24:44,802 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-18 20:24:44,802 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-18 20:24:44,802 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-18 20:24:44,803 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-18 20:24:44,803 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-18 20:24:44,803 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-18 20:24:44,803 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-18 20:24:44,803 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-18 20:24:44,803 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-18 20:24:44,804 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-18 20:24:44,804 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=SHALLOWEST; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=SHALLOWEST; [2020-08-18 20:24:45,125 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-18 20:24:45,138 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-18 20:24:45,141 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-18 20:24:45,143 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-18 20:24:45,143 INFO L275 PluginConnector]: CDTParser initialized [2020-08-18 20:24:45,144 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-fpi/brs1f.c [2020-08-18 20:24:45,206 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b315bfe2d/5a6ef5a3b35e4768b297ed1a4a0b7fb3/FLAGc28bf4ec9 [2020-08-18 20:24:45,647 INFO L306 CDTParser]: Found 1 translation units. [2020-08-18 20:24:45,648 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/array-fpi/brs1f.c [2020-08-18 20:24:45,655 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b315bfe2d/5a6ef5a3b35e4768b297ed1a4a0b7fb3/FLAGc28bf4ec9 [2020-08-18 20:24:46,046 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b315bfe2d/5a6ef5a3b35e4768b297ed1a4a0b7fb3 [2020-08-18 20:24:46,056 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-18 20:24:46,059 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-18 20:24:46,060 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-18 20:24:46,060 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-18 20:24:46,064 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-18 20:24:46,065 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.08 08:24:46" (1/1) ... [2020-08-18 20:24:46,068 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6256357c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 08:24:46, skipping insertion in model container [2020-08-18 20:24:46,068 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.08 08:24:46" (1/1) ... [2020-08-18 20:24:46,076 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-18 20:24:46,101 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-18 20:24:46,273 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-18 20:24:46,282 INFO L203 MainTranslator]: Completed pre-run [2020-08-18 20:24:46,303 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-18 20:24:46,419 INFO L208 MainTranslator]: Completed translation [2020-08-18 20:24:46,419 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 08:24:46 WrapperNode [2020-08-18 20:24:46,420 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-18 20:24:46,420 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-18 20:24:46,421 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-18 20:24:46,421 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-18 20:24:46,435 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 08:24:46" (1/1) ... [2020-08-18 20:24:46,437 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 08:24:46" (1/1) ... [2020-08-18 20:24:46,447 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 08:24:46" (1/1) ... [2020-08-18 20:24:46,447 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 08:24:46" (1/1) ... [2020-08-18 20:24:46,468 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 08:24:46" (1/1) ... [2020-08-18 20:24:46,474 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 08:24:46" (1/1) ... [2020-08-18 20:24:46,477 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 08:24:46" (1/1) ... [2020-08-18 20:24:46,479 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-18 20:24:46,480 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-18 20:24:46,480 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-18 20:24:46,480 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-18 20:24:46,482 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 08:24:46" (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 20:24:46,544 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-18 20:24:46,544 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-18 20:24:46,544 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-08-18 20:24:46,544 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-08-18 20:24:46,545 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-18 20:24:46,545 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-18 20:24:46,545 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-08-18 20:24:46,545 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-08-18 20:24:46,545 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-08-18 20:24:46,545 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-18 20:24:46,545 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-18 20:24:46,546 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-18 20:24:46,546 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-18 20:24:46,546 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-18 20:24:46,546 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-18 20:24:46,546 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-18 20:24:46,546 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-18 20:24:46,547 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-18 20:24:46,547 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-18 20:24:46,894 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-18 20:24:46,896 INFO L295 CfgBuilder]: Removed 2 assume(true) statements. [2020-08-18 20:24:46,901 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.08 08:24:46 BoogieIcfgContainer [2020-08-18 20:24:46,901 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-18 20:24:46,903 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-18 20:24:46,904 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-18 20:24:46,907 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-18 20:24:46,908 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.08 08:24:46" (1/3) ... [2020-08-18 20:24:46,909 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5451a397 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.08 08:24:46, skipping insertion in model container [2020-08-18 20:24:46,909 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 08:24:46" (2/3) ... [2020-08-18 20:24:46,910 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5451a397 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.08 08:24:46, skipping insertion in model container [2020-08-18 20:24:46,911 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.08 08:24:46" (3/3) ... [2020-08-18 20:24:46,912 INFO L109 eAbstractionObserver]: Analyzing ICFG brs1f.c [2020-08-18 20:24:46,924 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-18 20:24:46,932 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-18 20:24:46,945 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-18 20:24:46,964 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-18 20:24:46,964 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-18 20:24:46,964 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-18 20:24:46,965 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-18 20:24:46,965 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-18 20:24:46,965 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-18 20:24:46,965 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-18 20:24:46,965 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-18 20:24:46,982 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states. [2020-08-18 20:24:46,988 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-08-18 20:24:46,989 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 20:24:46,989 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] [2020-08-18 20:24:46,990 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 20:24:46,995 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 20:24:46,996 INFO L82 PathProgramCache]: Analyzing trace with hash 1824292310, now seen corresponding path program 1 times [2020-08-18 20:24:47,002 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 20:24:47,003 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2004470313] [2020-08-18 20:24:47,003 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 20:24:47,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:24:47,193 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 20:24:47,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:24:47,215 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-08-18 20:24:47,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:24:47,227 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 20:24:47,228 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2004470313] [2020-08-18 20:24:47,237 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 20:24:47,237 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-18 20:24:47,238 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [243575824] [2020-08-18 20:24:47,243 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-18 20:24:47,244 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 20:24:47,258 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-18 20:24:47,259 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-18 20:24:47,261 INFO L87 Difference]: Start difference. First operand 33 states. Second operand 3 states. [2020-08-18 20:24:47,375 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 20:24:47,376 INFO L93 Difference]: Finished difference Result 56 states and 71 transitions. [2020-08-18 20:24:47,377 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-18 20:24:47,378 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 21 [2020-08-18 20:24:47,379 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 20:24:47,387 INFO L225 Difference]: With dead ends: 56 [2020-08-18 20:24:47,387 INFO L226 Difference]: Without dead ends: 26 [2020-08-18 20:24:47,391 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 20:24:47,410 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2020-08-18 20:24:47,428 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26. [2020-08-18 20:24:47,429 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2020-08-18 20:24:47,431 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 28 transitions. [2020-08-18 20:24:47,433 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 28 transitions. Word has length 21 [2020-08-18 20:24:47,433 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 20:24:47,433 INFO L479 AbstractCegarLoop]: Abstraction has 26 states and 28 transitions. [2020-08-18 20:24:47,433 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-18 20:24:47,434 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 28 transitions. [2020-08-18 20:24:47,434 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-08-18 20:24:47,435 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 20:24:47,435 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] [2020-08-18 20:24:47,435 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-18 20:24:47,435 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 20:24:47,436 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 20:24:47,436 INFO L82 PathProgramCache]: Analyzing trace with hash 1767537087, now seen corresponding path program 1 times [2020-08-18 20:24:47,436 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 20:24:47,436 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [822901791] [2020-08-18 20:24:47,436 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 20:24:47,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:24:47,533 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 20:24:47,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:24:47,552 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-08-18 20:24:47,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:24:47,574 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 20:24:47,575 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [822901791] [2020-08-18 20:24:47,575 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 20:24:47,575 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-18 20:24:47,575 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1755109415] [2020-08-18 20:24:47,577 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-18 20:24:47,577 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 20:24:47,577 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-18 20:24:47,578 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-08-18 20:24:47,578 INFO L87 Difference]: Start difference. First operand 26 states and 28 transitions. Second operand 5 states. [2020-08-18 20:24:47,711 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 20:24:47,712 INFO L93 Difference]: Finished difference Result 42 states and 48 transitions. [2020-08-18 20:24:47,712 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-08-18 20:24:47,712 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 21 [2020-08-18 20:24:47,713 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 20:24:47,714 INFO L225 Difference]: With dead ends: 42 [2020-08-18 20:24:47,714 INFO L226 Difference]: Without dead ends: 32 [2020-08-18 20:24:47,715 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 20:24:47,716 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2020-08-18 20:24:47,722 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 29. [2020-08-18 20:24:47,722 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2020-08-18 20:24:47,723 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 31 transitions. [2020-08-18 20:24:47,724 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 31 transitions. Word has length 21 [2020-08-18 20:24:47,724 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 20:24:47,724 INFO L479 AbstractCegarLoop]: Abstraction has 29 states and 31 transitions. [2020-08-18 20:24:47,724 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-18 20:24:47,724 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 31 transitions. [2020-08-18 20:24:47,725 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-08-18 20:24:47,725 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 20:24:47,726 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] [2020-08-18 20:24:47,726 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-18 20:24:47,726 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 20:24:47,726 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 20:24:47,727 INFO L82 PathProgramCache]: Analyzing trace with hash -395878216, now seen corresponding path program 1 times [2020-08-18 20:24:47,727 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 20:24:47,727 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1486250311] [2020-08-18 20:24:47,727 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 20:24:47,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-18 20:24:47,767 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-08-18 20:24:47,767 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-08-18 20:24:47,771 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-18 20:24:47,788 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.08 08:24:47 BoogieIcfgContainer [2020-08-18 20:24:47,788 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-18 20:24:47,791 INFO L168 Benchmark]: Toolchain (without parser) took 1732.25 ms. Allocated memory was 146.3 MB in the beginning and 202.4 MB in the end (delta: 56.1 MB). Free memory was 101.2 MB in the beginning and 109.5 MB in the end (delta: -8.2 MB). Peak memory consumption was 47.8 MB. Max. memory is 7.1 GB. [2020-08-18 20:24:47,793 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 146.3 MB. Free memory was 119.5 MB in the beginning and 119.3 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-08-18 20:24:47,794 INFO L168 Benchmark]: CACSL2BoogieTranslator took 360.44 ms. Allocated memory was 146.3 MB in the beginning and 202.4 MB in the end (delta: 56.1 MB). Free memory was 101.0 MB in the beginning and 181.2 MB in the end (delta: -80.2 MB). Peak memory consumption was 20.2 MB. Max. memory is 7.1 GB. [2020-08-18 20:24:47,795 INFO L168 Benchmark]: Boogie Preprocessor took 59.09 ms. Allocated memory is still 202.4 MB. Free memory was 181.2 MB in the beginning and 178.9 MB in the end (delta: 2.4 MB). Peak memory consumption was 2.4 MB. Max. memory is 7.1 GB. [2020-08-18 20:24:47,796 INFO L168 Benchmark]: RCFGBuilder took 421.30 ms. Allocated memory is still 202.4 MB. Free memory was 178.9 MB in the beginning and 162.1 MB in the end (delta: 16.8 MB). Peak memory consumption was 16.8 MB. Max. memory is 7.1 GB. [2020-08-18 20:24:47,797 INFO L168 Benchmark]: TraceAbstraction took 885.23 ms. Allocated memory is still 202.4 MB. Free memory was 161.4 MB in the beginning and 109.5 MB in the end (delta: 52.0 MB). Peak memory consumption was 52.0 MB. Max. memory is 7.1 GB. [2020-08-18 20:24:47,801 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 146.3 MB. Free memory was 119.5 MB in the beginning and 119.3 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 360.44 ms. Allocated memory was 146.3 MB in the beginning and 202.4 MB in the end (delta: 56.1 MB). Free memory was 101.0 MB in the beginning and 181.2 MB in the end (delta: -80.2 MB). Peak memory consumption was 20.2 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 59.09 ms. Allocated memory is still 202.4 MB. Free memory was 181.2 MB in the beginning and 178.9 MB in the end (delta: 2.4 MB). Peak memory consumption was 2.4 MB. Max. memory is 7.1 GB. * RCFGBuilder took 421.30 ms. Allocated memory is still 202.4 MB. Free memory was 178.9 MB in the beginning and 162.1 MB in the end (delta: 16.8 MB). Peak memory consumption was 16.8 MB. Max. memory is 7.1 GB. * TraceAbstraction took 885.23 ms. Allocated memory is still 202.4 MB. Free memory was 161.4 MB in the beginning and 109.5 MB in the end (delta: 52.0 MB). Peak memory consumption was 52.0 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 13]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L17] int N; [L21] N = __VERIFIER_nondet_int() [L22] COND FALSE !(N <= 0) [L23] CALL assume_abort_if_not(N <= 2147483647/sizeof(int)) [L11] COND FALSE !(!cond) [L23] RET assume_abort_if_not(N <= 2147483647/sizeof(int)) [L25] int i; [L26] long long sum[1]; [L27] int *a = malloc(sizeof(int)*N); [L29] i=0 [L29] COND TRUE i