/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 enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=WIDEST --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/ssinaf.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-177f698 [2020-08-21 22:17:49,654 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-21 22:17:49,656 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-21 22:17:49,681 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-21 22:17:49,682 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-21 22:17:49,683 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-21 22:17:49,684 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-21 22:17:49,686 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-21 22:17:49,688 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-21 22:17:49,689 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-21 22:17:49,690 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-21 22:17:49,691 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-21 22:17:49,691 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-21 22:17:49,696 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-21 22:17:49,697 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-21 22:17:49,698 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-21 22:17:49,700 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-21 22:17:49,701 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-21 22:17:49,702 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-21 22:17:49,707 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-21 22:17:49,711 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-21 22:17:49,712 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-21 22:17:49,713 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-21 22:17:49,714 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-21 22:17:49,716 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-08-21 22:17:49,724 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-21 22:17:49,725 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-21 22:17:49,725 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-21 22:17:49,726 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 22:17:49,750 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-21 22:17:49,751 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-21 22:17:49,752 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-21 22:17:49,752 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-21 22:17:49,752 INFO L138 SettingsManager]: * Use SBE=true [2020-08-21 22:17:49,753 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-21 22:17:49,753 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-21 22:17:49,753 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-21 22:17:49,753 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-21 22:17:49,753 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-21 22:17:49,754 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-21 22:17:49,754 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-21 22:17:49,754 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-21 22:17:49,754 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-21 22:17:49,754 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-21 22:17:49,755 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-21 22:17:49,755 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-21 22:17:49,755 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-21 22:17:49,755 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-21 22:17:49,755 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-21 22:17:49,756 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-21 22:17:49,756 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-21 22:17:49,756 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-21 22:17:49,756 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-21 22:17:49,756 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-21 22:17:49,757 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-21 22:17:49,757 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-21 22:17:49,757 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-21 22:17:49,757 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-21 22:17:49,758 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 -> enumeration-timeout=5000;interpolation-heuristic=WIDEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=WIDEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=WIDEST;log-additional-information=true; [2020-08-21 22:17:50,065 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-21 22:17:50,078 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-21 22:17:50,081 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-21 22:17:50,083 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-21 22:17:50,083 INFO L275 PluginConnector]: CDTParser initialized [2020-08-21 22:17:50,084 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-fpi/ssinaf.c [2020-08-21 22:17:50,164 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/964abf936/3d3f0ac56cb2476dad3dcf97032ebdb9/FLAGc0e37b1f4 [2020-08-21 22:17:50,643 INFO L306 CDTParser]: Found 1 translation units. [2020-08-21 22:17:50,643 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/array-fpi/ssinaf.c [2020-08-21 22:17:50,650 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/964abf936/3d3f0ac56cb2476dad3dcf97032ebdb9/FLAGc0e37b1f4 [2020-08-21 22:17:50,996 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/964abf936/3d3f0ac56cb2476dad3dcf97032ebdb9 [2020-08-21 22:17:51,006 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-21 22:17:51,008 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-21 22:17:51,009 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-21 22:17:51,009 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-21 22:17:51,012 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-21 22:17:51,014 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.08 10:17:50" (1/1) ... [2020-08-21 22:17:51,017 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4cd12457 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 10:17:51, skipping insertion in model container [2020-08-21 22:17:51,017 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.08 10:17:50" (1/1) ... [2020-08-21 22:17:51,025 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-21 22:17:51,044 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-21 22:17:51,244 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-21 22:17:51,254 INFO L203 MainTranslator]: Completed pre-run [2020-08-21 22:17:51,282 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-21 22:17:51,299 INFO L208 MainTranslator]: Completed translation [2020-08-21 22:17:51,299 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 10:17:51 WrapperNode [2020-08-21 22:17:51,300 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-21 22:17:51,300 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-21 22:17:51,300 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-21 22:17:51,301 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-21 22:17:51,398 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 10:17:51" (1/1) ... [2020-08-21 22:17:51,399 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 10:17:51" (1/1) ... [2020-08-21 22:17:51,413 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 10:17:51" (1/1) ... [2020-08-21 22:17:51,414 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 10:17:51" (1/1) ... [2020-08-21 22:17:51,429 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 10:17:51" (1/1) ... [2020-08-21 22:17:51,437 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 10:17:51" (1/1) ... [2020-08-21 22:17:51,439 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 10:17:51" (1/1) ... [2020-08-21 22:17:51,442 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-21 22:17:51,442 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-21 22:17:51,442 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-21 22:17:51,442 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-21 22:17:51,445 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 10:17:51" (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 22:17:51,512 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-21 22:17:51,512 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-21 22:17:51,512 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-08-21 22:17:51,512 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-08-21 22:17:51,513 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-21 22:17:51,513 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-21 22:17:51,513 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-08-21 22:17:51,513 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-08-21 22:17:51,513 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-08-21 22:17:51,513 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-21 22:17:51,514 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-21 22:17:51,514 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-21 22:17:51,514 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-21 22:17:51,514 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-21 22:17:51,514 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-21 22:17:51,514 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-21 22:17:51,515 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-21 22:17:51,515 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-21 22:17:51,515 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-21 22:17:51,822 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-21 22:17:51,823 INFO L295 CfgBuilder]: Removed 6 assume(true) statements. [2020-08-21 22:17:51,828 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.08 10:17:51 BoogieIcfgContainer [2020-08-21 22:17:51,828 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-21 22:17:51,830 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-21 22:17:51,830 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-21 22:17:51,833 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-21 22:17:51,833 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.08 10:17:50" (1/3) ... [2020-08-21 22:17:51,834 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@332bcf9b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.08 10:17:51, skipping insertion in model container [2020-08-21 22:17:51,835 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 10:17:51" (2/3) ... [2020-08-21 22:17:51,835 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@332bcf9b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.08 10:17:51, skipping insertion in model container [2020-08-21 22:17:51,835 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.08 10:17:51" (3/3) ... [2020-08-21 22:17:51,837 INFO L109 eAbstractionObserver]: Analyzing ICFG ssinaf.c [2020-08-21 22:17:51,850 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-21 22:17:51,857 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-21 22:17:51,873 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-21 22:17:51,901 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-21 22:17:51,901 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-21 22:17:51,901 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-21 22:17:51,901 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-21 22:17:51,901 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-21 22:17:51,902 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-21 22:17:51,902 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-21 22:17:51,902 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-21 22:17:51,927 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states. [2020-08-21 22:17:51,934 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-08-21 22:17:51,935 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 22:17:51,936 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 22:17:51,936 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 22:17:51,941 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 22:17:51,942 INFO L82 PathProgramCache]: Analyzing trace with hash 1994596369, now seen corresponding path program 1 times [2020-08-21 22:17:51,949 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 22:17:51,950 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1494468629] [2020-08-21 22:17:51,950 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 22:17:52,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:17:52,148 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 22:17:52,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:17:52,159 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-08-21 22:17:52,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:17:52,170 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 22:17:52,171 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1494468629] [2020-08-21 22:17:52,173 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 22:17:52,173 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-21 22:17:52,174 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [370280491] [2020-08-21 22:17:52,179 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-21 22:17:52,180 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 22:17:52,194 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-21 22:17:52,195 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-21 22:17:52,197 INFO L87 Difference]: Start difference. First operand 43 states. Second operand 3 states. [2020-08-21 22:17:52,352 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 22:17:52,353 INFO L93 Difference]: Finished difference Result 76 states and 103 transitions. [2020-08-21 22:17:52,354 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-21 22:17:52,355 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 28 [2020-08-21 22:17:52,356 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 22:17:52,365 INFO L225 Difference]: With dead ends: 76 [2020-08-21 22:17:52,366 INFO L226 Difference]: Without dead ends: 38 [2020-08-21 22:17:52,370 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 22:17:52,389 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2020-08-21 22:17:52,411 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 38. [2020-08-21 22:17:52,413 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2020-08-21 22:17:52,414 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 43 transitions. [2020-08-21 22:17:52,416 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 43 transitions. Word has length 28 [2020-08-21 22:17:52,417 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 22:17:52,417 INFO L479 AbstractCegarLoop]: Abstraction has 38 states and 43 transitions. [2020-08-21 22:17:52,417 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-21 22:17:52,417 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 43 transitions. [2020-08-21 22:17:52,418 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-08-21 22:17:52,419 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 22:17:52,419 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, 1, 1, 1] [2020-08-21 22:17:52,420 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-21 22:17:52,420 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 22:17:52,420 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 22:17:52,421 INFO L82 PathProgramCache]: Analyzing trace with hash 1530390023, now seen corresponding path program 1 times [2020-08-21 22:17:52,421 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 22:17:52,422 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1901804810] [2020-08-21 22:17:52,422 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 22:17:52,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:17:52,563 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 22:17:52,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:17:52,571 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-08-21 22:17:52,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:17:52,582 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 22:17:52,582 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1901804810] [2020-08-21 22:17:52,583 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 22:17:52,583 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-21 22:17:52,583 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1959498856] [2020-08-21 22:17:52,585 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-21 22:17:52,585 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 22:17:52,586 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-21 22:17:52,586 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-08-21 22:17:52,586 INFO L87 Difference]: Start difference. First operand 38 states and 43 transitions. Second operand 5 states. [2020-08-21 22:17:52,847 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 22:17:52,847 INFO L93 Difference]: Finished difference Result 75 states and 90 transitions. [2020-08-21 22:17:52,848 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-08-21 22:17:52,848 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 28 [2020-08-21 22:17:52,849 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 22:17:52,852 INFO L225 Difference]: With dead ends: 75 [2020-08-21 22:17:52,852 INFO L226 Difference]: Without dead ends: 52 [2020-08-21 22:17:52,854 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 22:17:52,854 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2020-08-21 22:17:52,868 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 43. [2020-08-21 22:17:52,869 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2020-08-21 22:17:52,870 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 48 transitions. [2020-08-21 22:17:52,870 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 48 transitions. Word has length 28 [2020-08-21 22:17:52,871 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 22:17:52,871 INFO L479 AbstractCegarLoop]: Abstraction has 43 states and 48 transitions. [2020-08-21 22:17:52,871 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-21 22:17:52,871 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 48 transitions. [2020-08-21 22:17:52,873 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2020-08-21 22:17:52,873 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 22:17:52,873 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 22:17:52,874 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-21 22:17:52,874 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 22:17:52,874 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 22:17:52,874 INFO L82 PathProgramCache]: Analyzing trace with hash 1357692925, now seen corresponding path program 1 times [2020-08-21 22:17:52,875 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 22:17:52,875 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [507061864] [2020-08-21 22:17:52,875 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 22:17:52,915 ERROR L271 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-08-21 22:17:52,916 WARN L168 FreeRefinementEngine]: Strategy FIXED_PREFERENCES was unsuccessful and could not determine trace feasibility [2020-08-21 22:17:52,916 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-08-21 22:17:52,921 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-21 22:17:52,941 WARN L231 ceAbstractionStarter]: Unable to decide correctness. Please check the following counterexample manually. [2020-08-21 22:17:52,942 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.08 10:17:52 BoogieIcfgContainer [2020-08-21 22:17:52,942 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-21 22:17:52,945 INFO L168 Benchmark]: Toolchain (without parser) took 1936.69 ms. Allocated memory was 140.0 MB in the beginning and 202.4 MB in the end (delta: 62.4 MB). Free memory was 102.5 MB in the beginning and 94.6 MB in the end (delta: 7.9 MB). Peak memory consumption was 70.3 MB. Max. memory is 7.1 GB. [2020-08-21 22:17:52,946 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 140.0 MB. Free memory was 121.5 MB in the beginning and 121.1 MB in the end (delta: 419.7 kB). Peak memory consumption was 419.7 kB. Max. memory is 7.1 GB. [2020-08-21 22:17:52,947 INFO L168 Benchmark]: CACSL2BoogieTranslator took 291.27 ms. Allocated memory is still 140.0 MB. Free memory was 102.5 MB in the beginning and 91.5 MB in the end (delta: 11.0 MB). Peak memory consumption was 11.0 MB. Max. memory is 7.1 GB. [2020-08-21 22:17:52,948 INFO L168 Benchmark]: Boogie Preprocessor took 141.55 ms. Allocated memory was 140.0 MB in the beginning and 202.4 MB in the end (delta: 62.4 MB). Free memory was 91.5 MB in the beginning and 179.8 MB in the end (delta: -88.2 MB). Peak memory consumption was 12.2 MB. Max. memory is 7.1 GB. [2020-08-21 22:17:52,950 INFO L168 Benchmark]: RCFGBuilder took 386.27 ms. Allocated memory is still 202.4 MB. Free memory was 179.8 MB in the beginning and 159.4 MB in the end (delta: 20.4 MB). Peak memory consumption was 20.4 MB. Max. memory is 7.1 GB. [2020-08-21 22:17:52,951 INFO L168 Benchmark]: TraceAbstraction took 1112.44 ms. Allocated memory is still 202.4 MB. Free memory was 159.4 MB in the beginning and 94.6 MB in the end (delta: 64.8 MB). Peak memory consumption was 64.8 MB. Max. memory is 7.1 GB. [2020-08-21 22:17:52,955 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 140.0 MB. Free memory was 121.5 MB in the beginning and 121.1 MB in the end (delta: 419.7 kB). Peak memory consumption was 419.7 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 291.27 ms. Allocated memory is still 140.0 MB. Free memory was 102.5 MB in the beginning and 91.5 MB in the end (delta: 11.0 MB). Peak memory consumption was 11.0 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 141.55 ms. Allocated memory was 140.0 MB in the beginning and 202.4 MB in the end (delta: 62.4 MB). Free memory was 91.5 MB in the beginning and 179.8 MB in the end (delta: -88.2 MB). Peak memory consumption was 12.2 MB. Max. memory is 7.1 GB. * RCFGBuilder took 386.27 ms. Allocated memory is still 202.4 MB. Free memory was 179.8 MB in the beginning and 159.4 MB in the end (delta: 20.4 MB). Peak memory consumption was 20.4 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1112.44 ms. Allocated memory is still 202.4 MB. Free memory was 159.4 MB in the beginning and 94.6 MB in the end (delta: 64.8 MB). Peak memory consumption was 64.8 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 13]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: unable to decide satisfiability of path constraint. Possible 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); [L29] sum[0] = 0 [L30] i=0 [L30] COND TRUE i