/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/ms1f.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-177f698 [2020-08-21 14:14:04,209 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-21 14:14:04,212 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-21 14:14:04,252 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-21 14:14:04,252 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-21 14:14:04,263 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-21 14:14:04,264 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-21 14:14:04,268 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-21 14:14:04,271 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-21 14:14:04,275 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-21 14:14:04,276 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-21 14:14:04,277 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-21 14:14:04,277 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-21 14:14:04,280 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-21 14:14:04,283 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-21 14:14:04,284 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-21 14:14:04,286 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-21 14:14:04,287 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-21 14:14:04,290 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-21 14:14:04,296 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-21 14:14:04,299 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-21 14:14:04,301 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-21 14:14:04,302 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-21 14:14:04,302 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-21 14:14:04,307 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-21 14:14:04,307 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-21 14:14:04,307 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-21 14:14:04,310 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-21 14:14:04,310 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-21 14:14:04,312 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... 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[2020-08-21 14:14:04,317 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-21 14:14:04,318 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-21 14:14:04,319 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-21 14:14:04,320 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 14:14:04,355 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-21 14:14:04,355 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-21 14:14:04,357 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-21 14:14:04,357 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-21 14:14:04,358 INFO L138 SettingsManager]: * Use SBE=true [2020-08-21 14:14:04,358 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-21 14:14:04,358 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-21 14:14:04,359 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-21 14:14:04,359 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-21 14:14:04,359 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-21 14:14:04,360 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-21 14:14:04,360 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-21 14:14:04,360 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-21 14:14:04,361 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-21 14:14:04,361 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-21 14:14:04,361 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-21 14:14:04,361 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-21 14:14:04,362 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-21 14:14:04,362 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-21 14:14:04,362 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-21 14:14:04,362 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-21 14:14:04,362 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-21 14:14:04,363 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-21 14:14:04,363 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-21 14:14:04,363 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-21 14:14:04,363 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-21 14:14:04,363 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-21 14:14:04,363 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-21 14:14:04,364 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-21 14:14:04,364 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 14:14:04,692 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-21 14:14:04,712 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-21 14:14:04,718 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-21 14:14:04,719 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-21 14:14:04,720 INFO L275 PluginConnector]: CDTParser initialized [2020-08-21 14:14:04,720 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-fpi/ms1f.c [2020-08-21 14:14:04,795 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/59034e489/7cbb008461ca4c43bc9c162312655d85/FLAG916f36427 [2020-08-21 14:14:05,280 INFO L306 CDTParser]: Found 1 translation units. [2020-08-21 14:14:05,280 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/array-fpi/ms1f.c [2020-08-21 14:14:05,289 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/59034e489/7cbb008461ca4c43bc9c162312655d85/FLAG916f36427 [2020-08-21 14:14:05,629 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/59034e489/7cbb008461ca4c43bc9c162312655d85 [2020-08-21 14:14:05,639 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-21 14:14:05,641 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-21 14:14:05,642 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-21 14:14:05,643 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-21 14:14:05,646 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-21 14:14:05,647 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.08 02:14:05" (1/1) ... [2020-08-21 14:14:05,650 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1fc4fd3a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 02:14:05, skipping insertion in model container [2020-08-21 14:14:05,651 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.08 02:14:05" (1/1) ... [2020-08-21 14:14:05,658 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-21 14:14:05,676 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-21 14:14:05,891 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-21 14:14:05,901 INFO L203 MainTranslator]: Completed pre-run [2020-08-21 14:14:05,921 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-21 14:14:05,940 INFO L208 MainTranslator]: Completed translation [2020-08-21 14:14:05,940 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 02:14:05 WrapperNode [2020-08-21 14:14:05,940 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-21 14:14:05,941 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-21 14:14:05,941 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-21 14:14:05,941 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-21 14:14:06,034 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 02:14:05" (1/1) ... [2020-08-21 14:14:06,037 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 02:14:05" (1/1) ... [2020-08-21 14:14:06,046 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 02:14:05" (1/1) ... [2020-08-21 14:14:06,046 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 02:14:05" (1/1) ... [2020-08-21 14:14:06,067 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 02:14:05" (1/1) ... [2020-08-21 14:14:06,074 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 02:14:05" (1/1) ... [2020-08-21 14:14:06,080 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 02:14:05" (1/1) ... [2020-08-21 14:14:06,082 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-21 14:14:06,082 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-21 14:14:06,082 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-21 14:14:06,083 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-21 14:14:06,083 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 02:14:05" (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 14:14:06,150 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-21 14:14:06,150 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-21 14:14:06,150 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-08-21 14:14:06,150 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-08-21 14:14:06,150 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-21 14:14:06,151 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-21 14:14:06,151 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-08-21 14:14:06,151 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-08-21 14:14:06,151 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-08-21 14:14:06,151 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-21 14:14:06,151 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-21 14:14:06,152 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-21 14:14:06,152 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-21 14:14:06,152 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-21 14:14:06,152 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-21 14:14:06,152 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-21 14:14:06,152 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-21 14:14:06,153 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-21 14:14:06,153 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-21 14:14:06,406 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-21 14:14:06,406 INFO L295 CfgBuilder]: Removed 2 assume(true) statements. [2020-08-21 14:14:06,410 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.08 02:14:06 BoogieIcfgContainer [2020-08-21 14:14:06,411 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-21 14:14:06,412 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-21 14:14:06,412 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-21 14:14:06,418 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-21 14:14:06,421 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.08 02:14:05" (1/3) ... [2020-08-21 14:14:06,422 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@d742884 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.08 02:14:06, skipping insertion in model container [2020-08-21 14:14:06,422 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 02:14:05" (2/3) ... [2020-08-21 14:14:06,423 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@d742884 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.08 02:14:06, skipping insertion in model container [2020-08-21 14:14:06,423 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.08 02:14:06" (3/3) ... [2020-08-21 14:14:06,432 INFO L109 eAbstractionObserver]: Analyzing ICFG ms1f.c [2020-08-21 14:14:06,467 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-21 14:14:06,480 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-21 14:14:06,514 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-21 14:14:06,540 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-21 14:14:06,540 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-21 14:14:06,540 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-21 14:14:06,540 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-21 14:14:06,540 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-21 14:14:06,541 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-21 14:14:06,541 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-21 14:14:06,541 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-21 14:14:06,558 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states. [2020-08-21 14:14:06,563 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-08-21 14:14:06,564 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 14:14:06,564 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 14:14:06,565 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 14:14:06,569 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 14:14:06,570 INFO L82 PathProgramCache]: Analyzing trace with hash -432131487, now seen corresponding path program 1 times [2020-08-21 14:14:06,578 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 14:14:06,578 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [972341787] [2020-08-21 14:14:06,579 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 14:14:06,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:14:06,748 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 14:14:06,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:14:06,762 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-08-21 14:14:06,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:14:06,770 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 14:14:06,771 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [972341787] [2020-08-21 14:14:06,773 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 14:14:06,774 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-21 14:14:06,775 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [925960566] [2020-08-21 14:14:06,780 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-21 14:14:06,780 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 14:14:06,794 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-21 14:14:06,795 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-21 14:14:06,797 INFO L87 Difference]: Start difference. First operand 32 states. Second operand 3 states. [2020-08-21 14:14:06,896 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 14:14:06,896 INFO L93 Difference]: Finished difference Result 54 states and 67 transitions. [2020-08-21 14:14:06,897 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-21 14:14:06,899 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 21 [2020-08-21 14:14:06,899 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 14:14:06,907 INFO L225 Difference]: With dead ends: 54 [2020-08-21 14:14:06,908 INFO L226 Difference]: Without dead ends: 25 [2020-08-21 14:14:06,912 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 14:14:06,929 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2020-08-21 14:14:06,946 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 25. [2020-08-21 14:14:06,947 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2020-08-21 14:14:06,948 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 27 transitions. [2020-08-21 14:14:06,950 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 27 transitions. Word has length 21 [2020-08-21 14:14:06,950 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 14:14:06,950 INFO L479 AbstractCegarLoop]: Abstraction has 25 states and 27 transitions. [2020-08-21 14:14:06,950 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-21 14:14:06,951 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 27 transitions. [2020-08-21 14:14:06,951 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-08-21 14:14:06,952 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 14:14:06,952 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 14:14:06,952 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-21 14:14:06,953 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 14:14:06,953 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 14:14:06,953 INFO L82 PathProgramCache]: Analyzing trace with hash -173966049, now seen corresponding path program 1 times [2020-08-21 14:14:06,953 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 14:14:06,954 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [543455382] [2020-08-21 14:14:06,954 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 14:14:06,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:14:07,057 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 14:14:07,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:14:07,065 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-08-21 14:14:07,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:14:07,074 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 14:14:07,075 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [543455382] [2020-08-21 14:14:07,075 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 14:14:07,075 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-21 14:14:07,076 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1580124232] [2020-08-21 14:14:07,077 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-21 14:14:07,078 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 14:14:07,078 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-21 14:14:07,078 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-08-21 14:14:07,079 INFO L87 Difference]: Start difference. First operand 25 states and 27 transitions. Second operand 5 states. [2020-08-21 14:14:07,186 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 14:14:07,187 INFO L93 Difference]: Finished difference Result 40 states and 46 transitions. [2020-08-21 14:14:07,187 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-08-21 14:14:07,187 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 21 [2020-08-21 14:14:07,188 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 14:14:07,189 INFO L225 Difference]: With dead ends: 40 [2020-08-21 14:14:07,189 INFO L226 Difference]: Without dead ends: 30 [2020-08-21 14:14:07,190 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 14:14:07,191 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2020-08-21 14:14:07,197 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 28. [2020-08-21 14:14:07,197 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2020-08-21 14:14:07,198 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 30 transitions. [2020-08-21 14:14:07,199 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 30 transitions. Word has length 21 [2020-08-21 14:14:07,199 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 14:14:07,199 INFO L479 AbstractCegarLoop]: Abstraction has 28 states and 30 transitions. [2020-08-21 14:14:07,199 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-21 14:14:07,199 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 30 transitions. [2020-08-21 14:14:07,200 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-08-21 14:14:07,200 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 14:14:07,201 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 14:14:07,201 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-21 14:14:07,201 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 14:14:07,201 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 14:14:07,202 INFO L82 PathProgramCache]: Analyzing trace with hash -445719797, now seen corresponding path program 1 times [2020-08-21 14:14:07,202 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 14:14:07,202 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [173943126] [2020-08-21 14:14:07,202 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 14:14:07,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-21 14:14:07,240 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-08-21 14:14:07,241 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-08-21 14:14:07,247 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-21 14:14:07,266 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.08 02:14:07 BoogieIcfgContainer [2020-08-21 14:14:07,266 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-21 14:14:07,281 INFO L168 Benchmark]: Toolchain (without parser) took 1636.08 ms. Allocated memory was 143.1 MB in the beginning and 205.0 MB in the end (delta: 61.9 MB). Free memory was 106.6 MB in the beginning and 114.3 MB in the end (delta: -7.7 MB). Peak memory consumption was 54.2 MB. Max. memory is 7.1 GB. [2020-08-21 14:14:07,283 INFO L168 Benchmark]: CDTParser took 0.50 ms. Allocated memory is still 143.1 MB. Free memory was 124.6 MB in the beginning and 124.4 MB in the end (delta: 209.7 kB). Peak memory consumption was 209.7 kB. Max. memory is 7.1 GB. [2020-08-21 14:14:07,284 INFO L168 Benchmark]: CACSL2BoogieTranslator took 298.17 ms. Allocated memory is still 143.1 MB. Free memory was 106.4 MB in the beginning and 96.0 MB in the end (delta: 10.4 MB). Peak memory consumption was 10.4 MB. Max. memory is 7.1 GB. [2020-08-21 14:14:07,285 INFO L168 Benchmark]: Boogie Preprocessor took 141.02 ms. Allocated memory was 143.1 MB in the beginning and 205.0 MB in the end (delta: 61.9 MB). Free memory was 96.0 MB in the beginning and 182.5 MB in the end (delta: -86.5 MB). Peak memory consumption was 12.5 MB. Max. memory is 7.1 GB. [2020-08-21 14:14:07,286 INFO L168 Benchmark]: RCFGBuilder took 328.50 ms. Allocated memory is still 205.0 MB. Free memory was 182.5 MB in the beginning and 165.7 MB in the end (delta: 16.8 MB). Peak memory consumption was 16.8 MB. Max. memory is 7.1 GB. [2020-08-21 14:14:07,288 INFO L168 Benchmark]: TraceAbstraction took 863.19 ms. Allocated memory is still 205.0 MB. Free memory was 165.7 MB in the beginning and 114.3 MB in the end (delta: 51.4 MB). Peak memory consumption was 51.4 MB. Max. memory is 7.1 GB. [2020-08-21 14:14:07,297 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.50 ms. Allocated memory is still 143.1 MB. Free memory was 124.6 MB in the beginning and 124.4 MB in the end (delta: 209.7 kB). Peak memory consumption was 209.7 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 298.17 ms. Allocated memory is still 143.1 MB. Free memory was 106.4 MB in the beginning and 96.0 MB in the end (delta: 10.4 MB). Peak memory consumption was 10.4 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 141.02 ms. Allocated memory was 143.1 MB in the beginning and 205.0 MB in the end (delta: 61.9 MB). Free memory was 96.0 MB in the beginning and 182.5 MB in the end (delta: -86.5 MB). Peak memory consumption was 12.5 MB. Max. memory is 7.1 GB. * RCFGBuilder took 328.50 ms. Allocated memory is still 205.0 MB. Free memory was 182.5 MB in the beginning and 165.7 MB in the end (delta: 16.8 MB). Peak memory consumption was 16.8 MB. Max. memory is 7.1 GB. * TraceAbstraction took 863.19 ms. Allocated memory is still 205.0 MB. Free memory was 165.7 MB in the beginning and 114.3 MB in the end (delta: 51.4 MB). Peak memory consumption was 51.4 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] int sum[1]; [L27] int *a = malloc(sizeof(int)*N); [L29] i=0 [L29] COND TRUE i