/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --traceabstraction.use.minimal.unsat.core.enumeration false -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/array-fpi/res1of.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-eb0fd7c [2020-09-21 10:28:24,087 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-21 10:28:24,092 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-21 10:28:24,138 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-21 10:28:24,138 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-21 10:28:24,149 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-21 10:28:24,152 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-21 10:28:24,156 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-21 10:28:24,159 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-21 10:28:24,162 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-21 10:28:24,163 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-21 10:28:24,164 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-21 10:28:24,164 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-21 10:28:24,168 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-21 10:28:24,170 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-21 10:28:24,172 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-21 10:28:24,174 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-21 10:28:24,175 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-21 10:28:24,178 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-21 10:28:24,188 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-21 10:28:24,191 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-21 10:28:24,192 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-21 10:28:24,193 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-21 10:28:24,194 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-21 10:28:24,197 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-09-21 10:28:24,204 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-21 10:28:24,205 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-21 10:28:24,206 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-21 10:28:24,206 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-21 10:28:24,208 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-21 10:28:24,208 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-21 10:28:24,209 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-21 10:28:24,209 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-21 10:28:24,209 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-21 10:28:24,211 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-21 10:28:24,212 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-21 10:28:24,213 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 [2020-09-21 10:28:24,261 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-21 10:28:24,261 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-21 10:28:24,264 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-21 10:28:24,264 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-21 10:28:24,264 INFO L138 SettingsManager]: * Use SBE=true [2020-09-21 10:28:24,264 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-21 10:28:24,265 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-21 10:28:24,265 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-21 10:28:24,265 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-21 10:28:24,265 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-21 10:28:24,267 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-21 10:28:24,267 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-21 10:28:24,267 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-21 10:28:24,267 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-21 10:28:24,268 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-21 10:28:24,268 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-21 10:28:24,268 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-21 10:28:24,268 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-21 10:28:24,268 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-21 10:28:24,269 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-21 10:28:24,269 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-21 10:28:24,269 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-21 10:28:24,269 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-21 10:28:24,269 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-21 10:28:24,270 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-21 10:28:24,270 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-21 10:28:24,270 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-21 10:28:24,270 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-21 10:28:24,270 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-21 10:28:24,271 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> false [2020-09-21 10:28:24,717 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-21 10:28:24,742 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-21 10:28:24,748 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-21 10:28:24,750 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-21 10:28:24,750 INFO L275 PluginConnector]: CDTParser initialized [2020-09-21 10:28:24,751 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-fpi/res1of.c [2020-09-21 10:28:24,842 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/083331a0b/026bc42f12004eabad4a6adf9b67fd4d/FLAG24dccb8fa [2020-09-21 10:28:25,350 INFO L306 CDTParser]: Found 1 translation units. [2020-09-21 10:28:25,351 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/array-fpi/res1of.c [2020-09-21 10:28:25,360 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/083331a0b/026bc42f12004eabad4a6adf9b67fd4d/FLAG24dccb8fa [2020-09-21 10:28:25,696 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/083331a0b/026bc42f12004eabad4a6adf9b67fd4d [2020-09-21 10:28:25,708 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-21 10:28:25,713 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-21 10:28:25,714 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-21 10:28:25,714 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-21 10:28:25,719 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-21 10:28:25,720 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.09 10:28:25" (1/1) ... [2020-09-21 10:28:25,724 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3d48d131 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 10:28:25, skipping insertion in model container [2020-09-21 10:28:25,725 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.09 10:28:25" (1/1) ... [2020-09-21 10:28:25,734 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-21 10:28:25,760 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-21 10:28:26,021 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-21 10:28:26,033 INFO L203 MainTranslator]: Completed pre-run [2020-09-21 10:28:26,062 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-21 10:28:26,083 INFO L208 MainTranslator]: Completed translation [2020-09-21 10:28:26,084 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 10:28:26 WrapperNode [2020-09-21 10:28:26,084 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-21 10:28:26,085 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-21 10:28:26,085 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-21 10:28:26,085 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-21 10:28:26,182 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 10:28:26" (1/1) ... [2020-09-21 10:28:26,183 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 10:28:26" (1/1) ... [2020-09-21 10:28:26,195 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 10:28:26" (1/1) ... [2020-09-21 10:28:26,195 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 10:28:26" (1/1) ... [2020-09-21 10:28:26,206 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 10:28:26" (1/1) ... [2020-09-21 10:28:26,214 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 10:28:26" (1/1) ... [2020-09-21 10:28:26,216 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 10:28:26" (1/1) ... [2020-09-21 10:28:26,219 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-21 10:28:26,220 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-21 10:28:26,220 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-21 10:28:26,220 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-21 10:28:26,223 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 10:28:26" (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 [2020-09-21 10:28:26,322 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-21 10:28:26,322 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-21 10:28:26,323 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-09-21 10:28:26,323 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-09-21 10:28:26,323 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-21 10:28:26,323 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-21 10:28:26,324 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-09-21 10:28:26,324 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-09-21 10:28:26,324 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-09-21 10:28:26,324 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-21 10:28:26,324 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-09-21 10:28:26,325 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-21 10:28:26,325 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-09-21 10:28:26,325 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-09-21 10:28:26,325 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-21 10:28:26,325 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-09-21 10:28:26,326 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-21 10:28:26,326 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-21 10:28:26,326 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-21 10:28:26,654 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-21 10:28:26,654 INFO L295 CfgBuilder]: Removed 4 assume(true) statements. [2020-09-21 10:28:26,660 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.09 10:28:26 BoogieIcfgContainer [2020-09-21 10:28:26,660 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-21 10:28:26,661 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-21 10:28:26,661 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-21 10:28:26,665 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-21 10:28:26,666 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.09 10:28:25" (1/3) ... [2020-09-21 10:28:26,667 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@40922616 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.09 10:28:26, skipping insertion in model container [2020-09-21 10:28:26,667 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 10:28:26" (2/3) ... [2020-09-21 10:28:26,667 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@40922616 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.09 10:28:26, skipping insertion in model container [2020-09-21 10:28:26,667 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.09 10:28:26" (3/3) ... [2020-09-21 10:28:26,673 INFO L109 eAbstractionObserver]: Analyzing ICFG res1of.c [2020-09-21 10:28:26,697 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-21 10:28:26,706 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-21 10:28:26,728 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-21 10:28:26,753 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-21 10:28:26,753 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-21 10:28:26,753 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-21 10:28:26,754 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-21 10:28:26,754 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-21 10:28:26,754 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-21 10:28:26,754 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-21 10:28:26,754 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-21 10:28:26,778 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states. [2020-09-21 10:28:26,786 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-09-21 10:28:26,786 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 10:28:26,787 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] [2020-09-21 10:28:26,788 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 10:28:26,795 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 10:28:26,796 INFO L82 PathProgramCache]: Analyzing trace with hash 1562148239, now seen corresponding path program 1 times [2020-09-21 10:28:26,806 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 10:28:26,806 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [967693932] [2020-09-21 10:28:26,807 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 10:28:26,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:28:27,025 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 10:28:27,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:28:27,036 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-09-21 10:28:27,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:28:27,047 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-21 10:28:27,051 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [967693932] [2020-09-21 10:28:27,055 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 10:28:27,056 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-21 10:28:27,057 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1258176155] [2020-09-21 10:28:27,064 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-21 10:28:27,065 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 10:28:27,082 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-21 10:28:27,084 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-21 10:28:27,087 INFO L87 Difference]: Start difference. First operand 37 states. Second operand 3 states. [2020-09-21 10:28:27,220 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 10:28:27,220 INFO L93 Difference]: Finished difference Result 64 states and 83 transitions. [2020-09-21 10:28:27,221 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-21 10:28:27,223 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 25 [2020-09-21 10:28:27,224 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 10:28:27,235 INFO L225 Difference]: With dead ends: 64 [2020-09-21 10:28:27,235 INFO L226 Difference]: Without dead ends: 30 [2020-09-21 10:28:27,240 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 [2020-09-21 10:28:27,261 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2020-09-21 10:28:27,286 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 30. [2020-09-21 10:28:27,288 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2020-09-21 10:28:27,289 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 33 transitions. [2020-09-21 10:28:27,292 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 33 transitions. Word has length 25 [2020-09-21 10:28:27,292 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 10:28:27,292 INFO L479 AbstractCegarLoop]: Abstraction has 30 states and 33 transitions. [2020-09-21 10:28:27,292 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-21 10:28:27,293 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 33 transitions. [2020-09-21 10:28:27,294 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-09-21 10:28:27,294 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 10:28:27,294 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] [2020-09-21 10:28:27,295 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-21 10:28:27,295 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 10:28:27,295 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 10:28:27,296 INFO L82 PathProgramCache]: Analyzing trace with hash 369304979, now seen corresponding path program 1 times [2020-09-21 10:28:27,296 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 10:28:27,296 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [297496127] [2020-09-21 10:28:27,297 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 10:28:27,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:28:27,436 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 10:28:27,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:28:27,444 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-09-21 10:28:27,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:28:27,454 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-21 10:28:27,455 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [297496127] [2020-09-21 10:28:27,455 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 10:28:27,456 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-21 10:28:27,456 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [485808519] [2020-09-21 10:28:27,458 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-21 10:28:27,458 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 10:28:27,459 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-21 10:28:27,459 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-21 10:28:27,459 INFO L87 Difference]: Start difference. First operand 30 states and 33 transitions. Second operand 5 states. [2020-09-21 10:28:27,731 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 10:28:27,731 INFO L93 Difference]: Finished difference Result 53 states and 62 transitions. [2020-09-21 10:28:27,732 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-21 10:28:27,732 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 25 [2020-09-21 10:28:27,733 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 10:28:27,734 INFO L225 Difference]: With dead ends: 53 [2020-09-21 10:28:27,734 INFO L226 Difference]: Without dead ends: 38 [2020-09-21 10:28:27,735 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 [2020-09-21 10:28:27,736 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2020-09-21 10:28:27,743 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 34. [2020-09-21 10:28:27,744 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2020-09-21 10:28:27,745 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 37 transitions. [2020-09-21 10:28:27,746 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 37 transitions. Word has length 25 [2020-09-21 10:28:27,746 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 10:28:27,746 INFO L479 AbstractCegarLoop]: Abstraction has 34 states and 37 transitions. [2020-09-21 10:28:27,746 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-21 10:28:27,747 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 37 transitions. [2020-09-21 10:28:27,748 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-09-21 10:28:27,748 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 10:28:27,748 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] [2020-09-21 10:28:27,748 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-21 10:28:27,749 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 10:28:27,749 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 10:28:27,749 INFO L82 PathProgramCache]: Analyzing trace with hash -1815337701, now seen corresponding path program 1 times [2020-09-21 10:28:27,750 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 10:28:27,750 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1264766186] [2020-09-21 10:28:27,750 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 10:28:27,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-21 10:28:27,819 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-09-21 10:28:27,820 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-09-21 10:28:27,825 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-21 10:28:27,847 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.09 10:28:27 BoogieIcfgContainer [2020-09-21 10:28:27,848 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-21 10:28:27,852 INFO L168 Benchmark]: Toolchain (without parser) took 2139.95 ms. Allocated memory was 138.9 MB in the beginning and 202.4 MB in the end (delta: 63.4 MB). Free memory was 102.2 MB in the beginning and 103.3 MB in the end (delta: -1.1 MB). Peak memory consumption was 62.4 MB. Max. memory is 7.1 GB. [2020-09-21 10:28:27,853 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 138.9 MB. Free memory was 120.5 MB in the beginning and 120.3 MB in the end (delta: 209.7 kB). Peak memory consumption was 209.7 kB. Max. memory is 7.1 GB. [2020-09-21 10:28:27,854 INFO L168 Benchmark]: CACSL2BoogieTranslator took 370.24 ms. Allocated memory is still 138.9 MB. Free memory was 101.6 MB in the beginning and 90.5 MB in the end (delta: 11.0 MB). Peak memory consumption was 11.0 MB. Max. memory is 7.1 GB. [2020-09-21 10:28:27,855 INFO L168 Benchmark]: Boogie Preprocessor took 134.72 ms. Allocated memory was 138.9 MB in the beginning and 202.4 MB in the end (delta: 63.4 MB). Free memory was 90.5 MB in the beginning and 179.6 MB in the end (delta: -89.1 MB). Peak memory consumption was 12.2 MB. Max. memory is 7.1 GB. [2020-09-21 10:28:27,856 INFO L168 Benchmark]: RCFGBuilder took 440.07 ms. Allocated memory is still 202.4 MB. Free memory was 179.6 MB in the beginning and 161.3 MB in the end (delta: 18.4 MB). Peak memory consumption was 18.4 MB. Max. memory is 7.1 GB. [2020-09-21 10:28:27,857 INFO L168 Benchmark]: TraceAbstraction took 1186.63 ms. Allocated memory is still 202.4 MB. Free memory was 160.6 MB in the beginning and 103.3 MB in the end (delta: 57.3 MB). Peak memory consumption was 57.3 MB. Max. memory is 7.1 GB. [2020-09-21 10:28:27,861 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 138.9 MB. Free memory was 120.5 MB in the beginning and 120.3 MB in the end (delta: 209.7 kB). Peak memory consumption was 209.7 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 370.24 ms. Allocated memory is still 138.9 MB. Free memory was 101.6 MB in the beginning and 90.5 MB in the end (delta: 11.0 MB). Peak memory consumption was 11.0 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 134.72 ms. Allocated memory was 138.9 MB in the beginning and 202.4 MB in the end (delta: 63.4 MB). Free memory was 90.5 MB in the beginning and 179.6 MB in the end (delta: -89.1 MB). Peak memory consumption was 12.2 MB. Max. memory is 7.1 GB. * RCFGBuilder took 440.07 ms. Allocated memory is still 202.4 MB. Free memory was 179.6 MB in the beginning and 161.3 MB in the end (delta: 18.4 MB). Peak memory consumption was 18.4 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1186.63 ms. Allocated memory is still 202.4 MB. Free memory was 160.6 MB in the beginning and 103.3 MB in the end (delta: 57.3 MB). Peak memory consumption was 57.3 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 13]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L17] int N; [L21] N = __VERIFIER_nondet_int() [L22] COND FALSE !(N <= 0) [L23] CALL assume_abort_if_not(N <= 2147483647/sizeof(int)) [L11] COND FALSE !(!cond) [L23] RET assume_abort_if_not(N <= 2147483647/sizeof(int)) [L25] int i; [L26] long long sum[1]; [L27] int *a = malloc(sizeof(int)*N); [L28] int *b = malloc(sizeof(int)*N); [L30] sum[0] = 0 [L31] i=0 [L31] COND TRUE i