/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 interpolation-heuristic=FIRST --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/sina5f.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-177f698 [2020-08-21 15:02:33,749 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-21 15:02:33,753 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-21 15:02:33,793 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-21 15:02:33,794 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-21 15:02:33,802 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-21 15:02:33,805 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-21 15:02:33,808 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-21 15:02:33,810 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-21 15:02:33,813 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-21 15:02:33,814 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-21 15:02:33,815 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-21 15:02:33,815 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-21 15:02:33,818 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-21 15:02:33,820 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-21 15:02:33,822 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-21 15:02:33,823 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-21 15:02:33,824 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-21 15:02:33,826 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-21 15:02:33,835 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-21 15:02:33,837 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-21 15:02:33,839 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-21 15:02:33,840 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-21 15:02:33,840 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-21 15:02:33,857 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-08-21 15:02:33,867 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-21 15:02:33,871 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-21 15:02:33,872 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-21 15:02:33,873 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 15:02:33,909 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-21 15:02:33,910 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-21 15:02:33,914 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-21 15:02:33,915 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-21 15:02:33,915 INFO L138 SettingsManager]: * Use SBE=true [2020-08-21 15:02:33,915 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-21 15:02:33,915 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-21 15:02:33,915 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-21 15:02:33,916 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-21 15:02:33,916 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-21 15:02:33,917 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-21 15:02:33,917 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-21 15:02:33,917 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-21 15:02:33,918 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-21 15:02:33,918 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-21 15:02:33,918 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-21 15:02:33,918 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-21 15:02:33,919 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-21 15:02:33,919 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-21 15:02:33,919 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-21 15:02:33,919 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-21 15:02:33,920 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-21 15:02:33,920 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-21 15:02:33,920 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-21 15:02:33,920 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-21 15:02:33,920 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-21 15:02:33,921 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-21 15:02:33,921 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-21 15:02:33,921 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-21 15:02:33,921 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 -> interpolation-heuristic=FIRST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> interpolation-heuristic=FIRST;log-additional-information=true; [2020-08-21 15:02:34,252 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-21 15:02:34,263 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-21 15:02:34,266 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-21 15:02:34,268 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-21 15:02:34,268 INFO L275 PluginConnector]: CDTParser initialized [2020-08-21 15:02:34,269 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-fpi/sina5f.c [2020-08-21 15:02:34,329 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/2d7286cc3/b1ba1233ab59463eaa27de808fa16287/FLAG3201d036a [2020-08-21 15:02:34,822 INFO L306 CDTParser]: Found 1 translation units. [2020-08-21 15:02:34,823 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/array-fpi/sina5f.c [2020-08-21 15:02:34,835 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/2d7286cc3/b1ba1233ab59463eaa27de808fa16287/FLAG3201d036a [2020-08-21 15:02:35,191 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/2d7286cc3/b1ba1233ab59463eaa27de808fa16287 [2020-08-21 15:02:35,203 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-21 15:02:35,205 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-21 15:02:35,207 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-21 15:02:35,207 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-21 15:02:35,211 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-21 15:02:35,212 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.08 03:02:35" (1/1) ... [2020-08-21 15:02:35,215 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6a132343 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 03:02:35, skipping insertion in model container [2020-08-21 15:02:35,215 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.08 03:02:35" (1/1) ... [2020-08-21 15:02:35,223 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-21 15:02:35,241 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-21 15:02:35,448 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-21 15:02:35,456 INFO L203 MainTranslator]: Completed pre-run [2020-08-21 15:02:35,480 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-21 15:02:35,575 INFO L208 MainTranslator]: Completed translation [2020-08-21 15:02:35,576 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 03:02:35 WrapperNode [2020-08-21 15:02:35,576 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-21 15:02:35,577 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-21 15:02:35,577 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-21 15:02:35,577 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-21 15:02:35,590 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 03:02:35" (1/1) ... [2020-08-21 15:02:35,590 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 03:02:35" (1/1) ... [2020-08-21 15:02:35,599 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 03:02:35" (1/1) ... [2020-08-21 15:02:35,600 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 03:02:35" (1/1) ... [2020-08-21 15:02:35,609 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 03:02:35" (1/1) ... [2020-08-21 15:02:35,616 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 03:02:35" (1/1) ... [2020-08-21 15:02:35,618 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 03:02:35" (1/1) ... [2020-08-21 15:02:35,621 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-21 15:02:35,621 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-21 15:02:35,621 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-21 15:02:35,622 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-21 15:02:35,623 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 03:02:35" (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 15:02:35,698 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-21 15:02:35,698 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-21 15:02:35,698 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-08-21 15:02:35,698 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-08-21 15:02:35,699 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-21 15:02:35,699 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-21 15:02:35,699 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-08-21 15:02:35,699 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-08-21 15:02:35,699 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-08-21 15:02:35,699 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-21 15:02:35,699 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-21 15:02:35,700 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-21 15:02:35,700 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-21 15:02:35,700 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-21 15:02:35,700 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-21 15:02:35,700 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-21 15:02:35,700 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-21 15:02:35,701 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-21 15:02:35,701 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-21 15:02:35,968 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-21 15:02:35,969 INFO L295 CfgBuilder]: Removed 6 assume(true) statements. [2020-08-21 15:02:35,973 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.08 03:02:35 BoogieIcfgContainer [2020-08-21 15:02:35,973 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-21 15:02:35,975 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-21 15:02:35,975 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-21 15:02:35,978 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-21 15:02:35,978 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.08 03:02:35" (1/3) ... [2020-08-21 15:02:35,979 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@f4d0ea3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.08 03:02:35, skipping insertion in model container [2020-08-21 15:02:35,980 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 03:02:35" (2/3) ... [2020-08-21 15:02:35,980 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@f4d0ea3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.08 03:02:35, skipping insertion in model container [2020-08-21 15:02:35,980 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.08 03:02:35" (3/3) ... [2020-08-21 15:02:35,982 INFO L109 eAbstractionObserver]: Analyzing ICFG sina5f.c [2020-08-21 15:02:35,994 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-21 15:02:36,001 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-21 15:02:36,034 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-21 15:02:36,097 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-21 15:02:36,097 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-21 15:02:36,097 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-21 15:02:36,098 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-21 15:02:36,098 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-21 15:02:36,098 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-21 15:02:36,098 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-21 15:02:36,098 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-21 15:02:36,124 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states. [2020-08-21 15:02:36,136 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-08-21 15:02:36,136 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 15:02:36,137 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] [2020-08-21 15:02:36,137 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 15:02:36,142 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 15:02:36,143 INFO L82 PathProgramCache]: Analyzing trace with hash 1994596369, now seen corresponding path program 1 times [2020-08-21 15:02:36,149 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 15:02:36,150 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2058788605] [2020-08-21 15:02:36,150 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 15:02:36,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:02:36,336 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 15:02:36,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:02:36,346 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-08-21 15:02:36,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:02:36,356 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 15:02:36,357 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2058788605] [2020-08-21 15:02:36,359 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 15:02:36,360 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-21 15:02:36,361 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [789671425] [2020-08-21 15:02:36,366 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-21 15:02:36,366 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 15:02:36,381 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-21 15:02:36,382 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-21 15:02:36,384 INFO L87 Difference]: Start difference. First operand 43 states. Second operand 3 states. [2020-08-21 15:02:36,529 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 15:02:36,529 INFO L93 Difference]: Finished difference Result 76 states and 103 transitions. [2020-08-21 15:02:36,530 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-21 15:02:36,531 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 28 [2020-08-21 15:02:36,532 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 15:02:36,540 INFO L225 Difference]: With dead ends: 76 [2020-08-21 15:02:36,541 INFO L226 Difference]: Without dead ends: 38 [2020-08-21 15:02:36,546 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 15:02:36,562 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2020-08-21 15:02:36,582 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 38. [2020-08-21 15:02:36,583 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2020-08-21 15:02:36,585 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 43 transitions. [2020-08-21 15:02:36,587 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 43 transitions. Word has length 28 [2020-08-21 15:02:36,587 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 15:02:36,587 INFO L479 AbstractCegarLoop]: Abstraction has 38 states and 43 transitions. [2020-08-21 15:02:36,587 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-21 15:02:36,588 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 43 transitions. [2020-08-21 15:02:36,589 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-08-21 15:02:36,589 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 15:02:36,589 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] [2020-08-21 15:02:36,589 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-21 15:02:36,590 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 15:02:36,590 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 15:02:36,590 INFO L82 PathProgramCache]: Analyzing trace with hash 1530390023, now seen corresponding path program 1 times [2020-08-21 15:02:36,591 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 15:02:36,591 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1133619227] [2020-08-21 15:02:36,591 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 15:02:36,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:02:36,700 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 15:02:36,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:02:36,718 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-08-21 15:02:36,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:02:36,730 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 15:02:36,731 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1133619227] [2020-08-21 15:02:36,731 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 15:02:36,731 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-21 15:02:36,731 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [317848665] [2020-08-21 15:02:36,736 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-21 15:02:36,737 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 15:02:36,737 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-21 15:02:36,737 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-08-21 15:02:36,738 INFO L87 Difference]: Start difference. First operand 38 states and 43 transitions. Second operand 5 states. [2020-08-21 15:02:36,928 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 15:02:36,929 INFO L93 Difference]: Finished difference Result 75 states and 90 transitions. [2020-08-21 15:02:36,930 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-08-21 15:02:36,930 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 28 [2020-08-21 15:02:36,930 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 15:02:36,933 INFO L225 Difference]: With dead ends: 75 [2020-08-21 15:02:36,934 INFO L226 Difference]: Without dead ends: 52 [2020-08-21 15:02:36,935 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 15:02:36,936 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2020-08-21 15:02:36,961 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 43. [2020-08-21 15:02:36,961 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2020-08-21 15:02:36,963 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 48 transitions. [2020-08-21 15:02:36,963 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 48 transitions. Word has length 28 [2020-08-21 15:02:36,963 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 15:02:36,964 INFO L479 AbstractCegarLoop]: Abstraction has 43 states and 48 transitions. [2020-08-21 15:02:36,964 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-21 15:02:36,964 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 48 transitions. [2020-08-21 15:02:36,965 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2020-08-21 15:02:36,965 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 15:02:36,966 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, 1, 1, 1, 1, 1] [2020-08-21 15:02:36,966 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-21 15:02:36,986 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 15:02:36,987 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 15:02:36,987 INFO L82 PathProgramCache]: Analyzing trace with hash 1357692925, now seen corresponding path program 1 times [2020-08-21 15:02:36,987 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 15:02:36,988 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [282662588] [2020-08-21 15:02:36,988 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 15:02:37,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-21 15:02:37,076 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-08-21 15:02:37,077 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-08-21 15:02:37,081 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-21 15:02:37,103 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.08 03:02:37 BoogieIcfgContainer [2020-08-21 15:02:37,103 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-21 15:02:37,106 INFO L168 Benchmark]: Toolchain (without parser) took 1900.29 ms. Allocated memory was 143.1 MB in the beginning and 231.7 MB in the end (delta: 88.6 MB). Free memory was 105.6 MB in the beginning and 196.7 MB in the end (delta: -91.1 MB). There was no memory consumed. Max. memory is 7.1 GB. [2020-08-21 15:02:37,107 INFO L168 Benchmark]: CDTParser took 0.14 ms. Allocated memory is still 143.1 MB. Free memory was 124.7 MB in the beginning and 124.2 MB in the end (delta: 419.7 kB). Peak memory consumption was 419.7 kB. Max. memory is 7.1 GB. [2020-08-21 15:02:37,108 INFO L168 Benchmark]: CACSL2BoogieTranslator took 369.31 ms. Allocated memory was 143.1 MB in the beginning and 204.5 MB in the end (delta: 61.3 MB). Free memory was 105.6 MB in the beginning and 183.2 MB in the end (delta: -77.6 MB). Peak memory consumption was 22.4 MB. Max. memory is 7.1 GB. [2020-08-21 15:02:37,109 INFO L168 Benchmark]: Boogie Preprocessor took 44.45 ms. Allocated memory is still 204.5 MB. Free memory was 183.2 MB in the beginning and 181.1 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 7.1 GB. [2020-08-21 15:02:37,110 INFO L168 Benchmark]: RCFGBuilder took 352.02 ms. Allocated memory is still 204.5 MB. Free memory was 180.2 MB in the beginning and 160.6 MB in the end (delta: 19.5 MB). Peak memory consumption was 19.5 MB. Max. memory is 7.1 GB. [2020-08-21 15:02:37,111 INFO L168 Benchmark]: TraceAbstraction took 1128.36 ms. Allocated memory was 204.5 MB in the beginning and 231.7 MB in the end (delta: 27.3 MB). Free memory was 160.6 MB in the beginning and 196.7 MB in the end (delta: -36.1 MB). There was no memory consumed. Max. memory is 7.1 GB. [2020-08-21 15:02:37,115 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14 ms. Allocated memory is still 143.1 MB. Free memory was 124.7 MB in the beginning and 124.2 MB in the end (delta: 419.7 kB). Peak memory consumption was 419.7 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 369.31 ms. Allocated memory was 143.1 MB in the beginning and 204.5 MB in the end (delta: 61.3 MB). Free memory was 105.6 MB in the beginning and 183.2 MB in the end (delta: -77.6 MB). Peak memory consumption was 22.4 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 44.45 ms. Allocated memory is still 204.5 MB. Free memory was 183.2 MB in the beginning and 181.1 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 7.1 GB. * RCFGBuilder took 352.02 ms. Allocated memory is still 204.5 MB. Free memory was 180.2 MB in the beginning and 160.6 MB in the end (delta: 19.5 MB). Peak memory consumption was 19.5 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1128.36 ms. Allocated memory was 204.5 MB in the beginning and 231.7 MB in the end (delta: 27.3 MB). Free memory was 160.6 MB in the beginning and 196.7 MB in the end (delta: -36.1 MB). There was no memory consumed. 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] long long *a = malloc(sizeof(long long)*N); [L28] long long *b = malloc(sizeof(long long)*N); [L30] sum[0] = 0 [L31] i=0 [L31] COND TRUE i