/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=NARROWEST -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/array-fpi/ifncompf.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-5644d1e-m [2020-08-18 22:01:43,084 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-18 22:01:43,087 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-18 22:01:43,129 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-18 22:01:43,129 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-18 22:01:43,133 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-18 22:01:43,140 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-18 22:01:43,143 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-18 22:01:43,146 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-18 22:01:43,148 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-18 22:01:43,149 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-18 22:01:43,152 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-18 22:01:43,152 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-18 22:01:43,154 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-18 22:01:43,157 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-18 22:01:43,159 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-18 22:01:43,160 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-18 22:01:43,161 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-18 22:01:43,162 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-18 22:01:43,170 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-18 22:01:43,172 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-18 22:01:43,173 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-18 22:01:43,174 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-18 22:01:43,175 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-18 22:01:43,186 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-18 22:01:43,186 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-18 22:01:43,187 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-18 22:01:43,192 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-18 22:01:43,192 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-18 22:01:43,196 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-18 22:01:43,196 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-18 22:01:43,197 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-18 22:01:43,198 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-18 22:01:43,198 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-18 22:01:43,201 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-18 22:01:43,202 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-18 22:01:43,202 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-18 22:01:43,203 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-18 22:01:43,204 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-18 22:01:43,205 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-18 22:01:43,205 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-18 22:01:43,207 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 22:01:43,243 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-18 22:01:43,243 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-18 22:01:43,245 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-18 22:01:43,245 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-18 22:01:43,245 INFO L138 SettingsManager]: * Use SBE=true [2020-08-18 22:01:43,245 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-18 22:01:43,246 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-18 22:01:43,246 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-18 22:01:43,246 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-18 22:01:43,246 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-18 22:01:43,247 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-18 22:01:43,247 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-18 22:01:43,247 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-18 22:01:43,248 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-18 22:01:43,248 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-18 22:01:43,248 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-18 22:01:43,248 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-18 22:01:43,249 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-18 22:01:43,249 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-18 22:01:43,249 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-18 22:01:43,249 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-18 22:01:43,250 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-18 22:01:43,250 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-18 22:01:43,250 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-18 22:01:43,250 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-18 22:01:43,250 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-18 22:01:43,251 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-18 22:01:43,251 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-18 22:01:43,251 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-18 22:01:43,251 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=NARROWEST; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=NARROWEST; [2020-08-18 22:01:43,594 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-18 22:01:43,615 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-18 22:01:43,627 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-18 22:01:43,628 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-18 22:01:43,629 INFO L275 PluginConnector]: CDTParser initialized [2020-08-18 22:01:43,630 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-fpi/ifncompf.c [2020-08-18 22:01:43,705 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/929dc4d8b/55b9dfb1a52a4d8ba5cb549bd1f1a43f/FLAG3f33fe80f [2020-08-18 22:01:44,134 INFO L306 CDTParser]: Found 1 translation units. [2020-08-18 22:01:44,134 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/array-fpi/ifncompf.c [2020-08-18 22:01:44,145 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/929dc4d8b/55b9dfb1a52a4d8ba5cb549bd1f1a43f/FLAG3f33fe80f [2020-08-18 22:01:44,506 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/929dc4d8b/55b9dfb1a52a4d8ba5cb549bd1f1a43f [2020-08-18 22:01:44,516 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-18 22:01:44,518 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-18 22:01:44,519 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-18 22:01:44,519 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-18 22:01:44,523 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-18 22:01:44,524 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.08 10:01:44" (1/1) ... [2020-08-18 22:01:44,527 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@526e8c93 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 10:01:44, skipping insertion in model container [2020-08-18 22:01:44,527 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.08 10:01:44" (1/1) ... [2020-08-18 22:01:44,535 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-18 22:01:44,554 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-18 22:01:44,811 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-18 22:01:44,826 INFO L203 MainTranslator]: Completed pre-run [2020-08-18 22:01:44,868 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-18 22:01:44,888 INFO L208 MainTranslator]: Completed translation [2020-08-18 22:01:44,889 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 10:01:44 WrapperNode [2020-08-18 22:01:44,890 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-18 22:01:44,891 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-18 22:01:44,891 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-18 22:01:44,891 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-18 22:01:44,992 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 10:01:44" (1/1) ... [2020-08-18 22:01:44,993 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 10:01:44" (1/1) ... [2020-08-18 22:01:45,010 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 10:01:44" (1/1) ... [2020-08-18 22:01:45,010 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 10:01:44" (1/1) ... [2020-08-18 22:01:45,030 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 10:01:44" (1/1) ... [2020-08-18 22:01:45,040 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 10:01:44" (1/1) ... [2020-08-18 22:01:45,042 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 10:01:44" (1/1) ... [2020-08-18 22:01:45,045 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-18 22:01:45,045 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-18 22:01:45,045 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-18 22:01:45,045 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-18 22:01:45,046 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 10:01:44" (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 22:01:45,109 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-18 22:01:45,109 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-18 22:01:45,109 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-08-18 22:01:45,109 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-08-18 22:01:45,110 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-18 22:01:45,110 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-18 22:01:45,110 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-08-18 22:01:45,110 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-08-18 22:01:45,110 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-08-18 22:01:45,111 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-18 22:01:45,111 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-18 22:01:45,111 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-18 22:01:45,111 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-18 22:01:45,111 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-18 22:01:45,111 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-18 22:01:45,111 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-18 22:01:45,112 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-18 22:01:45,112 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-18 22:01:45,397 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-18 22:01:45,398 INFO L295 CfgBuilder]: Removed 4 assume(true) statements. [2020-08-18 22:01:45,403 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.08 10:01:45 BoogieIcfgContainer [2020-08-18 22:01:45,404 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-18 22:01:45,405 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-18 22:01:45,405 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-18 22:01:45,408 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-18 22:01:45,408 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.08 10:01:44" (1/3) ... [2020-08-18 22:01:45,409 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@516d6cb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.08 10:01:45, skipping insertion in model container [2020-08-18 22:01:45,409 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 10:01:44" (2/3) ... [2020-08-18 22:01:45,410 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@516d6cb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.08 10:01:45, skipping insertion in model container [2020-08-18 22:01:45,410 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.08 10:01:45" (3/3) ... [2020-08-18 22:01:45,411 INFO L109 eAbstractionObserver]: Analyzing ICFG ifncompf.c [2020-08-18 22:01:45,423 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-18 22:01:45,430 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-18 22:01:45,460 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-18 22:01:45,510 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-18 22:01:45,510 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-18 22:01:45,511 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-18 22:01:45,511 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-18 22:01:45,511 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-18 22:01:45,511 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-18 22:01:45,511 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-18 22:01:45,511 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-18 22:01:45,528 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states. [2020-08-18 22:01:45,533 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-08-18 22:01:45,533 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 22:01:45,534 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] [2020-08-18 22:01:45,535 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 22:01:45,539 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 22:01:45,539 INFO L82 PathProgramCache]: Analyzing trace with hash -794599326, now seen corresponding path program 1 times [2020-08-18 22:01:45,548 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 22:01:45,548 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [775533143] [2020-08-18 22:01:45,549 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 22:01:45,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:01:45,737 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 22:01:45,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:01:45,748 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-08-18 22:01:45,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:01:45,758 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 22:01:45,759 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [775533143] [2020-08-18 22:01:45,761 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 22:01:45,761 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-18 22:01:45,762 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [922136630] [2020-08-18 22:01:45,767 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-18 22:01:45,768 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 22:01:45,778 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-18 22:01:45,779 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-18 22:01:45,780 INFO L87 Difference]: Start difference. First operand 40 states. Second operand 3 states. [2020-08-18 22:01:45,923 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 22:01:45,923 INFO L93 Difference]: Finished difference Result 70 states and 95 transitions. [2020-08-18 22:01:45,924 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-18 22:01:45,925 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 24 [2020-08-18 22:01:45,926 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 22:01:45,934 INFO L225 Difference]: With dead ends: 70 [2020-08-18 22:01:45,935 INFO L226 Difference]: Without dead ends: 35 [2020-08-18 22:01:45,939 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 22:01:45,956 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2020-08-18 22:01:45,975 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 35. [2020-08-18 22:01:45,976 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2020-08-18 22:01:45,978 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 41 transitions. [2020-08-18 22:01:45,980 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 41 transitions. Word has length 24 [2020-08-18 22:01:45,980 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 22:01:45,981 INFO L479 AbstractCegarLoop]: Abstraction has 35 states and 41 transitions. [2020-08-18 22:01:45,981 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-18 22:01:45,981 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 41 transitions. [2020-08-18 22:01:45,982 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-08-18 22:01:45,982 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 22:01:45,983 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] [2020-08-18 22:01:45,983 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-18 22:01:45,984 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 22:01:45,984 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 22:01:45,984 INFO L82 PathProgramCache]: Analyzing trace with hash -544938994, now seen corresponding path program 1 times [2020-08-18 22:01:45,984 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 22:01:45,985 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1027044042] [2020-08-18 22:01:45,985 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 22:01:46,027 ERROR L271 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-08-18 22:01:46,028 WARN L168 FreeRefinementEngine]: Strategy FIXED_PREFERENCES was unsuccessful and could not determine trace feasibility [2020-08-18 22:01:46,028 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-08-18 22:01:46,033 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-18 22:01:46,058 WARN L231 ceAbstractionStarter]: Unable to decide correctness. Please check the following counterexample manually. [2020-08-18 22:01:46,058 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.08 10:01:46 BoogieIcfgContainer [2020-08-18 22:01:46,058 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-18 22:01:46,061 INFO L168 Benchmark]: Toolchain (without parser) took 1542.52 ms. Allocated memory was 143.7 MB in the beginning and 202.9 MB in the end (delta: 59.2 MB). Free memory was 103.4 MB in the beginning and 127.1 MB in the end (delta: -23.7 MB). Peak memory consumption was 35.6 MB. Max. memory is 7.1 GB. [2020-08-18 22:01:46,063 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 143.7 MB. Free memory was 121.5 MB in the beginning and 121.3 MB in the end (delta: 209.7 kB). Peak memory consumption was 209.7 kB. Max. memory is 7.1 GB. [2020-08-18 22:01:46,064 INFO L168 Benchmark]: CACSL2BoogieTranslator took 371.65 ms. Allocated memory is still 143.7 MB. Free memory was 103.2 MB in the beginning and 92.6 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 7.1 GB. [2020-08-18 22:01:46,065 INFO L168 Benchmark]: Boogie Preprocessor took 153.82 ms. Allocated memory was 143.7 MB in the beginning and 202.9 MB in the end (delta: 59.2 MB). Free memory was 92.6 MB in the beginning and 180.3 MB in the end (delta: -87.8 MB). Peak memory consumption was 9.5 MB. Max. memory is 7.1 GB. [2020-08-18 22:01:46,066 INFO L168 Benchmark]: RCFGBuilder took 358.61 ms. Allocated memory is still 202.9 MB. Free memory was 180.3 MB in the beginning and 161.2 MB in the end (delta: 19.1 MB). Peak memory consumption was 19.1 MB. Max. memory is 7.1 GB. [2020-08-18 22:01:46,067 INFO L168 Benchmark]: TraceAbstraction took 653.75 ms. Allocated memory is still 202.9 MB. Free memory was 160.6 MB in the beginning and 127.1 MB in the end (delta: 33.5 MB). Peak memory consumption was 33.5 MB. Max. memory is 7.1 GB. [2020-08-18 22:01:46,071 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 143.7 MB. Free memory was 121.5 MB in the beginning and 121.3 MB in the end (delta: 209.7 kB). Peak memory consumption was 209.7 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 371.65 ms. Allocated memory is still 143.7 MB. Free memory was 103.2 MB in the beginning and 92.6 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 153.82 ms. Allocated memory was 143.7 MB in the beginning and 202.9 MB in the end (delta: 59.2 MB). Free memory was 92.6 MB in the beginning and 180.3 MB in the end (delta: -87.8 MB). Peak memory consumption was 9.5 MB. Max. memory is 7.1 GB. * RCFGBuilder took 358.61 ms. Allocated memory is still 202.9 MB. Free memory was 180.3 MB in the beginning and 161.2 MB in the end (delta: 19.1 MB). Peak memory consumption was 19.1 MB. Max. memory is 7.1 GB. * TraceAbstraction took 653.75 ms. Allocated memory is still 202.9 MB. Free memory was 160.6 MB in the beginning and 127.1 MB in the end (delta: 33.5 MB). Peak memory consumption was 33.5 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 13]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: unable to decide satisfiability of path constraint. Possible 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 *a = malloc(sizeof(long long)*N); [L27] long long *b = malloc(sizeof(long long)*N); [L28] long long *c = malloc(sizeof(long long)*N); [L30] i=0 [L30] COND FALSE !(i