/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 log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/array-fpi/ms5f.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-177f698 [2020-08-21 14:14:06,410 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-21 14:14:06,413 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-21 14:14:06,455 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-21 14:14:06,455 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-21 14:14:06,466 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-21 14:14:06,469 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-21 14:14:06,471 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-21 14:14:06,473 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-21 14:14:06,477 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-21 14:14:06,478 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-21 14:14:06,480 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-21 14:14:06,480 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-21 14:14:06,483 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-21 14:14:06,486 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-21 14:14:06,488 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-21 14:14:06,490 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-21 14:14:06,491 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-21 14:14:06,493 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-21 14:14:06,500 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-21 14:14:06,502 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-21 14:14:06,503 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-21 14:14:06,505 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-21 14:14:06,506 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-21 14:14:06,511 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-21 14:14:06,511 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-21 14:14:06,512 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-21 14:14:06,515 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-21 14:14:06,516 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-21 14:14:06,519 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-21 14:14:06,519 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-21 14:14:06,520 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-21 14:14:06,520 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-21 14:14:06,521 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-21 14:14:06,521 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-21 14:14:06,522 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-21 14:14:06,522 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-21 14:14:06,522 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-21 14:14:06,523 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-21 14:14:06,523 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-21 14:14:06,524 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-21 14:14:06,525 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-08-21 14:14:06,547 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-21 14:14:06,547 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-21 14:14:06,549 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-21 14:14:06,549 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-21 14:14:06,549 INFO L138 SettingsManager]: * Use SBE=true [2020-08-21 14:14:06,549 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-21 14:14:06,549 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-21 14:14:06,550 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-21 14:14:06,550 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-21 14:14:06,550 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-21 14:14:06,550 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-21 14:14:06,550 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-21 14:14:06,551 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-21 14:14:06,551 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-21 14:14:06,551 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-21 14:14:06,551 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-21 14:14:06,552 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-21 14:14:06,552 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-21 14:14:06,552 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-21 14:14:06,552 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-21 14:14:06,552 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-21 14:14:06,553 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-21 14:14:06,553 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-21 14:14:06,553 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-21 14:14:06,553 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-21 14:14:06,553 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-21 14:14:06,554 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-21 14:14:06,554 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-21 14:14:06,554 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-21 14:14:06,554 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 -> log-additional-information=true; [2020-08-21 14:14:06,864 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-21 14:14:06,877 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-21 14:14:06,880 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-21 14:14:06,882 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-21 14:14:06,882 INFO L275 PluginConnector]: CDTParser initialized [2020-08-21 14:14:06,883 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-fpi/ms5f.c [2020-08-21 14:14:06,946 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e1f819853/12a253d03dba48e080605559016f680c/FLAG8e85ab5ea [2020-08-21 14:14:07,379 INFO L306 CDTParser]: Found 1 translation units. [2020-08-21 14:14:07,380 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/array-fpi/ms5f.c [2020-08-21 14:14:07,389 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e1f819853/12a253d03dba48e080605559016f680c/FLAG8e85ab5ea [2020-08-21 14:14:07,742 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e1f819853/12a253d03dba48e080605559016f680c [2020-08-21 14:14:07,753 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-21 14:14:07,756 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-21 14:14:07,757 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-21 14:14:07,757 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-21 14:14:07,762 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-21 14:14:07,763 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.08 02:14:07" (1/1) ... [2020-08-21 14:14:07,767 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3ef7a3c2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 02:14:07, skipping insertion in model container [2020-08-21 14:14:07,767 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.08 02:14:07" (1/1) ... [2020-08-21 14:14:07,778 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-21 14:14:07,800 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-21 14:14:08,020 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-21 14:14:08,030 INFO L203 MainTranslator]: Completed pre-run [2020-08-21 14:14:08,051 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-21 14:14:08,069 INFO L208 MainTranslator]: Completed translation [2020-08-21 14:14:08,070 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 02:14:08 WrapperNode [2020-08-21 14:14:08,070 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-21 14:14:08,071 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-21 14:14:08,071 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-21 14:14:08,071 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-21 14:14:08,164 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 02:14:08" (1/1) ... [2020-08-21 14:14:08,164 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 02:14:08" (1/1) ... [2020-08-21 14:14:08,172 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 02:14:08" (1/1) ... [2020-08-21 14:14:08,173 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 02:14:08" (1/1) ... [2020-08-21 14:14:08,180 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 02:14:08" (1/1) ... [2020-08-21 14:14:08,185 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 02:14:08" (1/1) ... [2020-08-21 14:14:08,187 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 02:14:08" (1/1) ... [2020-08-21 14:14:08,189 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-21 14:14:08,190 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-21 14:14:08,190 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-21 14:14:08,190 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-21 14:14:08,191 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 02:14:08" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-21 14:14:08,266 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-21 14:14:08,266 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-21 14:14:08,266 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-08-21 14:14:08,266 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-08-21 14:14:08,267 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-21 14:14:08,267 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-21 14:14:08,267 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-08-21 14:14:08,268 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-08-21 14:14:08,268 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-08-21 14:14:08,268 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-21 14:14:08,269 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-21 14:14:08,269 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-21 14:14:08,269 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-21 14:14:08,269 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-21 14:14:08,270 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-21 14:14:08,270 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-21 14:14:08,270 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-21 14:14:08,271 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-21 14:14:08,271 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-21 14:14:08,520 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-21 14:14:08,520 INFO L295 CfgBuilder]: Removed 2 assume(true) statements. [2020-08-21 14:14:08,524 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.08 02:14:08 BoogieIcfgContainer [2020-08-21 14:14:08,524 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-21 14:14:08,525 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-21 14:14:08,525 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-21 14:14:08,529 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-21 14:14:08,530 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.08 02:14:07" (1/3) ... [2020-08-21 14:14:08,531 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7df10b22 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.08 02:14:08, skipping insertion in model container [2020-08-21 14:14:08,531 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 02:14:08" (2/3) ... [2020-08-21 14:14:08,532 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7df10b22 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.08 02:14:08, skipping insertion in model container [2020-08-21 14:14:08,532 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.08 02:14:08" (3/3) ... [2020-08-21 14:14:08,534 INFO L109 eAbstractionObserver]: Analyzing ICFG ms5f.c [2020-08-21 14:14:08,550 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-21 14:14:08,557 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-21 14:14:08,572 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-21 14:14:08,601 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-21 14:14:08,601 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-21 14:14:08,602 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-21 14:14:08,602 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-21 14:14:08,602 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-21 14:14:08,602 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-21 14:14:08,602 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-21 14:14:08,603 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-21 14:14:08,642 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states. [2020-08-21 14:14:08,648 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-08-21 14:14:08,661 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 14:14:08,662 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] [2020-08-21 14:14:08,663 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 14:14:08,671 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 14:14:08,672 INFO L82 PathProgramCache]: Analyzing trace with hash -432131487, now seen corresponding path program 1 times [2020-08-21 14:14:08,680 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 14:14:08,681 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1861727150] [2020-08-21 14:14:08,681 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 14:14:08,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:14:08,866 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 14:14:08,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:14:08,877 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-08-21 14:14:08,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:14:08,885 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 14:14:08,886 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1861727150] [2020-08-21 14:14:08,888 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 14:14:08,889 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-21 14:14:08,890 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1012839870] [2020-08-21 14:14:08,895 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-21 14:14:08,895 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 14:14:08,910 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-21 14:14:08,911 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-21 14:14:08,914 INFO L87 Difference]: Start difference. First operand 32 states. Second operand 3 states. [2020-08-21 14:14:09,043 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 14:14:09,044 INFO L93 Difference]: Finished difference Result 54 states and 67 transitions. [2020-08-21 14:14:09,045 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-21 14:14:09,046 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 21 [2020-08-21 14:14:09,047 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 14:14:09,055 INFO L225 Difference]: With dead ends: 54 [2020-08-21 14:14:09,056 INFO L226 Difference]: Without dead ends: 25 [2020-08-21 14:14:09,060 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-21 14:14:09,077 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2020-08-21 14:14:09,094 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 25. [2020-08-21 14:14:09,096 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2020-08-21 14:14:09,097 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 27 transitions. [2020-08-21 14:14:09,098 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 27 transitions. Word has length 21 [2020-08-21 14:14:09,099 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 14:14:09,099 INFO L479 AbstractCegarLoop]: Abstraction has 25 states and 27 transitions. [2020-08-21 14:14:09,099 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-21 14:14:09,100 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 27 transitions. [2020-08-21 14:14:09,101 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-08-21 14:14:09,101 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 14:14:09,101 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] [2020-08-21 14:14:09,102 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-21 14:14:09,102 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 14:14:09,102 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 14:14:09,103 INFO L82 PathProgramCache]: Analyzing trace with hash -173966049, now seen corresponding path program 1 times [2020-08-21 14:14:09,103 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 14:14:09,104 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1999668662] [2020-08-21 14:14:09,104 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 14:14:09,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:14:09,227 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 14:14:09,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:14:09,235 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-08-21 14:14:09,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:14:09,245 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 14:14:09,245 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1999668662] [2020-08-21 14:14:09,245 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 14:14:09,246 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-21 14:14:09,246 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [280490504] [2020-08-21 14:14:09,248 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-21 14:14:09,248 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 14:14:09,248 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-21 14:14:09,249 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-08-21 14:14:09,249 INFO L87 Difference]: Start difference. First operand 25 states and 27 transitions. Second operand 5 states. [2020-08-21 14:14:09,396 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 14:14:09,396 INFO L93 Difference]: Finished difference Result 40 states and 46 transitions. [2020-08-21 14:14:09,396 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-08-21 14:14:09,397 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 21 [2020-08-21 14:14:09,397 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 14:14:09,398 INFO L225 Difference]: With dead ends: 40 [2020-08-21 14:14:09,398 INFO L226 Difference]: Without dead ends: 30 [2020-08-21 14:14:09,400 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-08-21 14:14:09,400 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2020-08-21 14:14:09,408 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 28. [2020-08-21 14:14:09,408 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2020-08-21 14:14:09,409 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 30 transitions. [2020-08-21 14:14:09,409 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 30 transitions. Word has length 21 [2020-08-21 14:14:09,410 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 14:14:09,410 INFO L479 AbstractCegarLoop]: Abstraction has 28 states and 30 transitions. [2020-08-21 14:14:09,410 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-21 14:14:09,410 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 30 transitions. [2020-08-21 14:14:09,411 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-08-21 14:14:09,411 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 14:14:09,411 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] [2020-08-21 14:14:09,412 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-21 14:14:09,412 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 14:14:09,412 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 14:14:09,412 INFO L82 PathProgramCache]: Analyzing trace with hash -445719797, now seen corresponding path program 1 times [2020-08-21 14:14:09,413 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 14:14:09,413 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2134116233] [2020-08-21 14:14:09,413 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 14:14:09,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-21 14:14:09,457 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-08-21 14:14:09,457 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-08-21 14:14:09,461 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-21 14:14:09,476 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.08 02:14:09 BoogieIcfgContainer [2020-08-21 14:14:09,476 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-21 14:14:09,478 INFO L168 Benchmark]: Toolchain (without parser) took 1722.56 ms. Allocated memory was 140.0 MB in the beginning and 202.4 MB in the end (delta: 62.4 MB). Free memory was 101.5 MB in the beginning and 110.7 MB in the end (delta: -9.2 MB). Peak memory consumption was 53.2 MB. Max. memory is 7.1 GB. [2020-08-21 14:14:09,480 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 140.0 MB. Free memory was 120.2 MB in the beginning and 120.0 MB in the end (delta: 209.7 kB). Peak memory consumption was 209.7 kB. Max. memory is 7.1 GB. [2020-08-21 14:14:09,481 INFO L168 Benchmark]: CACSL2BoogieTranslator took 313.58 ms. Allocated memory is still 140.0 MB. Free memory was 101.3 MB in the beginning and 90.8 MB in the end (delta: 10.5 MB). Peak memory consumption was 10.5 MB. Max. memory is 7.1 GB. [2020-08-21 14:14:09,482 INFO L168 Benchmark]: Boogie Preprocessor took 118.97 ms. Allocated memory was 140.0 MB in the beginning and 202.4 MB in the end (delta: 62.4 MB). Free memory was 90.8 MB in the beginning and 179.8 MB in the end (delta: -89.0 MB). Peak memory consumption was 12.2 MB. Max. memory is 7.1 GB. [2020-08-21 14:14:09,483 INFO L168 Benchmark]: RCFGBuilder took 334.07 ms. Allocated memory is still 202.4 MB. Free memory was 179.8 MB in the beginning and 163.3 MB in the end (delta: 16.5 MB). Peak memory consumption was 16.5 MB. Max. memory is 7.1 GB. [2020-08-21 14:14:09,484 INFO L168 Benchmark]: TraceAbstraction took 950.77 ms. Allocated memory is still 202.4 MB. Free memory was 162.7 MB in the beginning and 110.7 MB in the end (delta: 52.0 MB). Peak memory consumption was 52.0 MB. Max. memory is 7.1 GB. [2020-08-21 14:14:09,488 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 ms. Allocated memory is still 140.0 MB. Free memory was 120.2 MB in the beginning and 120.0 MB in the end (delta: 209.7 kB). Peak memory consumption was 209.7 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 313.58 ms. Allocated memory is still 140.0 MB. Free memory was 101.3 MB in the beginning and 90.8 MB in the end (delta: 10.5 MB). Peak memory consumption was 10.5 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 118.97 ms. Allocated memory was 140.0 MB in the beginning and 202.4 MB in the end (delta: 62.4 MB). Free memory was 90.8 MB in the beginning and 179.8 MB in the end (delta: -89.0 MB). Peak memory consumption was 12.2 MB. Max. memory is 7.1 GB. * RCFGBuilder took 334.07 ms. Allocated memory is still 202.4 MB. Free memory was 179.8 MB in the beginning and 163.3 MB in the end (delta: 16.5 MB). Peak memory consumption was 16.5 MB. Max. memory is 7.1 GB. * TraceAbstraction took 950.77 ms. Allocated memory is still 202.4 MB. Free memory was 162.7 MB in the beginning and 110.7 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 4*N) [L13] COND TRUE !(cond) [L13] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 32 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 0.8s, OverallIterations: 3, TraceHistogramMax: 1, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 51 SDtfs, 39 SDslu, 11 SDs, 0 SdLazy, 64 SolverSat, 12 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 17 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=32occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 2 MinimizatonAttempts, 2 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 68 NumberOfCodeBlocks, 68 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 40 ConstructedInterpolants, 0 QuantifiedInterpolants, 1480 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 2 InterpolantComputations, 2 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...