/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/res1of.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-177f698 [2020-08-21 14:14:08,486 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-21 14:14:08,489 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-21 14:14:08,514 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-21 14:14:08,514 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-21 14:14:08,515 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-21 14:14:08,516 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-21 14:14:08,518 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-21 14:14:08,520 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-21 14:14:08,521 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-21 14:14:08,522 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-21 14:14:08,523 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-21 14:14:08,523 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-21 14:14:08,524 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-21 14:14:08,525 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-21 14:14:08,526 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-21 14:14:08,527 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-21 14:14:08,528 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-21 14:14:08,529 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-21 14:14:08,531 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-21 14:14:08,533 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-21 14:14:08,534 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-21 14:14:08,535 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-21 14:14:08,536 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-21 14:14:08,538 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-08-21 14:14:08,546 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-21 14:14:08,546 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-21 14:14:08,547 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-21 14:14:08,548 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 14:14:08,590 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-21 14:14:08,590 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-21 14:14:08,591 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-21 14:14:08,592 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-21 14:14:08,592 INFO L138 SettingsManager]: * Use SBE=true [2020-08-21 14:14:08,592 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-21 14:14:08,592 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-21 14:14:08,592 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-21 14:14:08,595 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-21 14:14:08,595 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-21 14:14:08,595 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-21 14:14:08,595 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-21 14:14:08,596 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-21 14:14:08,596 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-21 14:14:08,596 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-21 14:14:08,596 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-21 14:14:08,599 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-21 14:14:08,599 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-21 14:14:08,599 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-21 14:14:08,600 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-21 14:14:08,600 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-21 14:14:08,600 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-21 14:14:08,600 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-21 14:14:08,600 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-21 14:14:08,601 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-21 14:14:08,602 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-21 14:14:08,602 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-21 14:14:08,602 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-21 14:14:08,602 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-21 14:14:08,603 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 14:14:08,949 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-21 14:14:08,968 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-21 14:14:08,973 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-21 14:14:08,975 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-21 14:14:08,975 INFO L275 PluginConnector]: CDTParser initialized [2020-08-21 14:14:08,977 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-fpi/res1of.c [2020-08-21 14:14:09,038 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/8ab8484b5/c7af34dd5c2f4ef0801bc0016d061139/FLAGd0e7c4e12 [2020-08-21 14:14:09,522 INFO L306 CDTParser]: Found 1 translation units. [2020-08-21 14:14:09,522 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/array-fpi/res1of.c [2020-08-21 14:14:09,530 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/8ab8484b5/c7af34dd5c2f4ef0801bc0016d061139/FLAGd0e7c4e12 [2020-08-21 14:14:09,914 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/8ab8484b5/c7af34dd5c2f4ef0801bc0016d061139 [2020-08-21 14:14:09,923 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-21 14:14:09,925 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-21 14:14:09,926 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-21 14:14:09,926 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-21 14:14:09,931 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-21 14:14:09,933 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.08 02:14:09" (1/1) ... [2020-08-21 14:14:09,937 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@101a8ec4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 02:14:09, skipping insertion in model container [2020-08-21 14:14:09,937 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.08 02:14:09" (1/1) ... [2020-08-21 14:14:09,946 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-21 14:14:09,970 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-21 14:14:10,156 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-21 14:14:10,166 INFO L203 MainTranslator]: Completed pre-run [2020-08-21 14:14:10,187 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-21 14:14:10,204 INFO L208 MainTranslator]: Completed translation [2020-08-21 14:14:10,205 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 02:14:10 WrapperNode [2020-08-21 14:14:10,205 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-21 14:14:10,206 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-21 14:14:10,206 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-21 14:14:10,206 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-21 14:14:10,306 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 02:14:10" (1/1) ... [2020-08-21 14:14:10,306 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 02:14:10" (1/1) ... [2020-08-21 14:14:10,316 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 02:14:10" (1/1) ... [2020-08-21 14:14:10,317 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 02:14:10" (1/1) ... [2020-08-21 14:14:10,326 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 02:14:10" (1/1) ... [2020-08-21 14:14:10,333 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 02:14:10" (1/1) ... [2020-08-21 14:14:10,335 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 02:14:10" (1/1) ... [2020-08-21 14:14:10,337 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-21 14:14:10,338 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-21 14:14:10,338 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-21 14:14:10,338 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-21 14:14:10,340 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 02:14:10" (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 14:14:10,410 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-21 14:14:10,410 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-21 14:14:10,411 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-08-21 14:14:10,411 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-08-21 14:14:10,411 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-21 14:14:10,413 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-21 14:14:10,413 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-08-21 14:14:10,413 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-08-21 14:14:10,414 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-08-21 14:14:10,414 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-21 14:14:10,415 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-21 14:14:10,415 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-21 14:14:10,415 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-21 14:14:10,415 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-21 14:14:10,415 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-21 14:14:10,415 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-21 14:14:10,416 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-21 14:14:10,416 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-21 14:14:10,416 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-21 14:14:10,686 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-21 14:14:10,687 INFO L295 CfgBuilder]: Removed 4 assume(true) statements. [2020-08-21 14:14:10,691 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.08 02:14:10 BoogieIcfgContainer [2020-08-21 14:14:10,692 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-21 14:14:10,693 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-21 14:14:10,693 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-21 14:14:10,696 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-21 14:14:10,697 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.08 02:14:09" (1/3) ... [2020-08-21 14:14:10,698 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@57893a0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.08 02:14:10, skipping insertion in model container [2020-08-21 14:14:10,698 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 02:14:10" (2/3) ... [2020-08-21 14:14:10,698 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@57893a0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.08 02:14:10, skipping insertion in model container [2020-08-21 14:14:10,698 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.08 02:14:10" (3/3) ... [2020-08-21 14:14:10,700 INFO L109 eAbstractionObserver]: Analyzing ICFG res1of.c [2020-08-21 14:14:10,711 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-21 14:14:10,722 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-21 14:14:10,745 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-21 14:14:10,777 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-21 14:14:10,778 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-21 14:14:10,778 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-21 14:14:10,778 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-21 14:14:10,778 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-21 14:14:10,778 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-21 14:14:10,779 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-21 14:14:10,779 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-21 14:14:10,806 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states. [2020-08-21 14:14:10,813 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-08-21 14:14:10,814 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 14:14:10,815 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] [2020-08-21 14:14:10,816 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 14:14:10,823 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 14:14:10,824 INFO L82 PathProgramCache]: Analyzing trace with hash 1562148239, now seen corresponding path program 1 times [2020-08-21 14:14:10,833 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 14:14:10,834 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1743813384] [2020-08-21 14:14:10,835 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 14:14:10,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:14:11,114 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 14:14:11,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:14:11,140 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-08-21 14:14:11,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:14:11,162 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 14:14:11,164 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1743813384] [2020-08-21 14:14:11,168 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 14:14:11,169 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-21 14:14:11,173 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [926276787] [2020-08-21 14:14:11,186 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-21 14:14:11,187 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 14:14:11,203 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-21 14:14:11,205 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-21 14:14:11,208 INFO L87 Difference]: Start difference. First operand 37 states. Second operand 3 states. [2020-08-21 14:14:11,349 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 14:14:11,350 INFO L93 Difference]: Finished difference Result 64 states and 83 transitions. [2020-08-21 14:14:11,351 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-21 14:14:11,352 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 25 [2020-08-21 14:14:11,353 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 14:14:11,368 INFO L225 Difference]: With dead ends: 64 [2020-08-21 14:14:11,368 INFO L226 Difference]: Without dead ends: 30 [2020-08-21 14:14:11,374 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 14:14:11,391 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2020-08-21 14:14:11,411 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 30. [2020-08-21 14:14:11,413 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2020-08-21 14:14:11,414 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 33 transitions. [2020-08-21 14:14:11,416 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 33 transitions. Word has length 25 [2020-08-21 14:14:11,416 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 14:14:11,417 INFO L479 AbstractCegarLoop]: Abstraction has 30 states and 33 transitions. [2020-08-21 14:14:11,417 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-21 14:14:11,417 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 33 transitions. [2020-08-21 14:14:11,418 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-08-21 14:14:11,418 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 14:14:11,419 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] [2020-08-21 14:14:11,419 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-21 14:14:11,419 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 14:14:11,420 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 14:14:11,420 INFO L82 PathProgramCache]: Analyzing trace with hash 369304979, now seen corresponding path program 1 times [2020-08-21 14:14:11,420 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 14:14:11,421 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2128458593] [2020-08-21 14:14:11,421 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 14:14:11,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:14:11,530 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 14:14:11,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:14:11,536 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-08-21 14:14:11,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:14:11,547 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 14:14:11,548 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2128458593] [2020-08-21 14:14:11,548 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 14:14:11,549 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-21 14:14:11,549 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1776964548] [2020-08-21 14:14:11,551 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-21 14:14:11,551 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 14:14:11,552 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-21 14:14:11,552 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-08-21 14:14:11,552 INFO L87 Difference]: Start difference. First operand 30 states and 33 transitions. Second operand 5 states. [2020-08-21 14:14:11,701 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 14:14:11,701 INFO L93 Difference]: Finished difference Result 53 states and 62 transitions. [2020-08-21 14:14:11,702 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-08-21 14:14:11,702 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 25 [2020-08-21 14:14:11,702 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 14:14:11,704 INFO L225 Difference]: With dead ends: 53 [2020-08-21 14:14:11,704 INFO L226 Difference]: Without dead ends: 38 [2020-08-21 14:14:11,705 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 14:14:11,706 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2020-08-21 14:14:11,714 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 34. [2020-08-21 14:14:11,714 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2020-08-21 14:14:11,715 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 37 transitions. [2020-08-21 14:14:11,716 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 37 transitions. Word has length 25 [2020-08-21 14:14:11,716 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 14:14:11,716 INFO L479 AbstractCegarLoop]: Abstraction has 34 states and 37 transitions. [2020-08-21 14:14:11,716 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-21 14:14:11,717 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 37 transitions. [2020-08-21 14:14:11,718 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-08-21 14:14:11,718 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 14:14:11,718 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] [2020-08-21 14:14:11,719 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-21 14:14:11,719 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 14:14:11,719 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 14:14:11,720 INFO L82 PathProgramCache]: Analyzing trace with hash -1815337701, now seen corresponding path program 1 times [2020-08-21 14:14:11,720 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 14:14:11,720 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1013341018] [2020-08-21 14:14:11,720 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 14:14:11,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-21 14:14:11,836 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-08-21 14:14:11,839 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-08-21 14:14:11,842 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-21 14:14:11,867 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.08 02:14:11 BoogieIcfgContainer [2020-08-21 14:14:11,867 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-21 14:14:11,870 INFO L168 Benchmark]: Toolchain (without parser) took 1944.76 ms. Allocated memory was 140.5 MB in the beginning and 203.4 MB in the end (delta: 62.9 MB). Free memory was 103.7 MB in the beginning and 103.9 MB in the end (delta: -284.9 kB). Peak memory consumption was 62.6 MB. Max. memory is 7.1 GB. [2020-08-21 14:14:11,872 INFO L168 Benchmark]: CDTParser took 0.41 ms. Allocated memory is still 140.5 MB. Free memory was 122.0 MB in the beginning and 121.8 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-08-21 14:14:11,873 INFO L168 Benchmark]: CACSL2BoogieTranslator took 279.48 ms. Allocated memory is still 140.5 MB. Free memory was 103.2 MB in the beginning and 92.8 MB in the end (delta: 10.4 MB). Peak memory consumption was 10.4 MB. Max. memory is 7.1 GB. [2020-08-21 14:14:11,874 INFO L168 Benchmark]: Boogie Preprocessor took 132.15 ms. Allocated memory was 140.5 MB in the beginning and 203.4 MB in the end (delta: 62.9 MB). Free memory was 92.8 MB in the beginning and 180.3 MB in the end (delta: -87.5 MB). Peak memory consumption was 12.4 MB. Max. memory is 7.1 GB. [2020-08-21 14:14:11,875 INFO L168 Benchmark]: RCFGBuilder took 353.62 ms. Allocated memory is still 203.4 MB. Free memory was 180.3 MB in the beginning and 162.1 MB in the end (delta: 18.2 MB). Peak memory consumption was 18.2 MB. Max. memory is 7.1 GB. [2020-08-21 14:14:11,876 INFO L168 Benchmark]: TraceAbstraction took 1174.64 ms. Allocated memory is still 203.4 MB. Free memory was 161.5 MB in the beginning and 103.9 MB in the end (delta: 57.5 MB). Peak memory consumption was 57.5 MB. Max. memory is 7.1 GB. [2020-08-21 14:14:11,880 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.41 ms. Allocated memory is still 140.5 MB. Free memory was 122.0 MB in the beginning and 121.8 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 279.48 ms. Allocated memory is still 140.5 MB. Free memory was 103.2 MB in the beginning and 92.8 MB in the end (delta: 10.4 MB). Peak memory consumption was 10.4 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 132.15 ms. Allocated memory was 140.5 MB in the beginning and 203.4 MB in the end (delta: 62.9 MB). Free memory was 92.8 MB in the beginning and 180.3 MB in the end (delta: -87.5 MB). Peak memory consumption was 12.4 MB. Max. memory is 7.1 GB. * RCFGBuilder took 353.62 ms. Allocated memory is still 203.4 MB. Free memory was 180.3 MB in the beginning and 162.1 MB in the end (delta: 18.2 MB). Peak memory consumption was 18.2 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1174.64 ms. Allocated memory is still 203.4 MB. Free memory was 161.5 MB in the beginning and 103.9 MB in the end (delta: 57.5 MB). Peak memory consumption was 57.5 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