/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=HIGHLEXORDER --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/loops/sum_array-1.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-177f698 [2020-08-21 19:04:20,666 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-21 19:04:20,669 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-21 19:04:20,713 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-21 19:04:20,714 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-21 19:04:20,726 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-21 19:04:20,727 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-21 19:04:20,730 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-21 19:04:20,733 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-21 19:04:20,736 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-21 19:04:20,737 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-21 19:04:20,740 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-21 19:04:20,740 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-21 19:04:20,743 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-21 19:04:20,746 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-21 19:04:20,747 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-21 19:04:20,749 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-21 19:04:20,750 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-21 19:04:20,752 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-21 19:04:20,760 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-21 19:04:20,762 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-21 19:04:20,764 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-21 19:04:20,765 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-21 19:04:20,765 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-21 19:04:20,770 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-08-21 19:04:20,780 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-21 19:04:20,781 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-21 19:04:20,783 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-21 19:04:20,784 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 19:04:20,822 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-21 19:04:20,823 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-21 19:04:20,825 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-21 19:04:20,825 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-21 19:04:20,826 INFO L138 SettingsManager]: * Use SBE=true [2020-08-21 19:04:20,826 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-21 19:04:20,826 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-21 19:04:20,826 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-21 19:04:20,827 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-21 19:04:20,827 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-21 19:04:20,828 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-21 19:04:20,828 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-21 19:04:20,828 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-21 19:04:20,829 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-21 19:04:20,829 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-21 19:04:20,829 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-21 19:04:20,829 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-21 19:04:20,830 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-21 19:04:20,830 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-21 19:04:20,830 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-21 19:04:20,830 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-21 19:04:20,830 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-21 19:04:20,831 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-21 19:04:20,831 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-21 19:04:20,831 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-21 19:04:20,831 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-21 19:04:20,831 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-21 19:04:20,832 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-21 19:04:20,832 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-21 19:04:20,832 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=HIGHLEXORDER;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=HIGHLEXORDER;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=HIGHLEXORDER;log-additional-information=true; [2020-08-21 19:04:21,118 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-21 19:04:21,137 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-21 19:04:21,141 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-21 19:04:21,143 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-21 19:04:21,143 INFO L275 PluginConnector]: CDTParser initialized [2020-08-21 19:04:21,144 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loops/sum_array-1.c [2020-08-21 19:04:21,209 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e9458c92c/63440771ed094e84adcdcb6732c77c90/FLAG687e7f519 [2020-08-21 19:04:21,634 INFO L306 CDTParser]: Found 1 translation units. [2020-08-21 19:04:21,635 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/loops/sum_array-1.c [2020-08-21 19:04:21,642 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e9458c92c/63440771ed094e84adcdcb6732c77c90/FLAG687e7f519 [2020-08-21 19:04:22,034 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e9458c92c/63440771ed094e84adcdcb6732c77c90 [2020-08-21 19:04:22,043 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-21 19:04:22,044 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-21 19:04:22,045 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-21 19:04:22,046 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-21 19:04:22,049 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-21 19:04:22,050 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.08 07:04:22" (1/1) ... [2020-08-21 19:04:22,053 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@35692340 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 07:04:22, skipping insertion in model container [2020-08-21 19:04:22,054 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.08 07:04:22" (1/1) ... [2020-08-21 19:04:22,062 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-21 19:04:22,080 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-21 19:04:22,271 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-21 19:04:22,275 INFO L203 MainTranslator]: Completed pre-run [2020-08-21 19:04:22,303 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-21 19:04:22,325 INFO L208 MainTranslator]: Completed translation [2020-08-21 19:04:22,326 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 07:04:22 WrapperNode [2020-08-21 19:04:22,326 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-21 19:04:22,327 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-21 19:04:22,327 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-21 19:04:22,327 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-21 19:04:22,463 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 07:04:22" (1/1) ... [2020-08-21 19:04:22,464 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 07:04:22" (1/1) ... [2020-08-21 19:04:22,473 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 07:04:22" (1/1) ... [2020-08-21 19:04:22,473 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 07:04:22" (1/1) ... [2020-08-21 19:04:22,482 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 07:04:22" (1/1) ... [2020-08-21 19:04:22,488 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 07:04:22" (1/1) ... [2020-08-21 19:04:22,490 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 07:04:22" (1/1) ... [2020-08-21 19:04:22,493 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-21 19:04:22,493 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-21 19:04:22,493 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-21 19:04:22,493 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-21 19:04:22,495 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 07:04:22" (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 19:04:22,564 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-21 19:04:22,565 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-21 19:04:22,565 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-08-21 19:04:22,565 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-21 19:04:22,565 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-21 19:04:22,566 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-21 19:04:22,566 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-08-21 19:04:22,566 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uint [2020-08-21 19:04:22,566 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-21 19:04:22,566 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-21 19:04:22,566 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-21 19:04:22,567 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-21 19:04:22,567 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-21 19:04:22,567 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-21 19:04:22,567 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-21 19:04:22,944 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-21 19:04:22,945 INFO L295 CfgBuilder]: Removed 4 assume(true) statements. [2020-08-21 19:04:22,948 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.08 07:04:22 BoogieIcfgContainer [2020-08-21 19:04:22,949 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-21 19:04:22,950 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-21 19:04:22,950 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-21 19:04:22,953 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-21 19:04:22,953 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.08 07:04:22" (1/3) ... [2020-08-21 19:04:22,954 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@560a6657 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.08 07:04:22, skipping insertion in model container [2020-08-21 19:04:22,954 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 07:04:22" (2/3) ... [2020-08-21 19:04:22,955 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@560a6657 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.08 07:04:22, skipping insertion in model container [2020-08-21 19:04:22,955 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.08 07:04:22" (3/3) ... [2020-08-21 19:04:22,957 INFO L109 eAbstractionObserver]: Analyzing ICFG sum_array-1.c [2020-08-21 19:04:22,967 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-21 19:04:22,975 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-21 19:04:22,988 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-21 19:04:23,011 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-21 19:04:23,012 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-21 19:04:23,012 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-21 19:04:23,012 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-21 19:04:23,012 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-21 19:04:23,012 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-21 19:04:23,012 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-21 19:04:23,013 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-21 19:04:23,030 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states. [2020-08-21 19:04:23,035 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-08-21 19:04:23,035 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 19:04:23,036 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 19:04:23,037 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 19:04:23,043 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 19:04:23,043 INFO L82 PathProgramCache]: Analyzing trace with hash 415311520, now seen corresponding path program 1 times [2020-08-21 19:04:23,050 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 19:04:23,050 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1179728276] [2020-08-21 19:04:23,051 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 19:04:23,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:04:23,215 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 19:04:23,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:04:23,227 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 19:04:23,228 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1179728276] [2020-08-21 19:04:23,230 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 19:04:23,230 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-21 19:04:23,231 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [580976231] [2020-08-21 19:04:23,236 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-21 19:04:23,236 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 19:04:23,250 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-21 19:04:23,251 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-21 19:04:23,253 INFO L87 Difference]: Start difference. First operand 30 states. Second operand 3 states. [2020-08-21 19:04:23,356 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 19:04:23,357 INFO L93 Difference]: Finished difference Result 52 states and 67 transitions. [2020-08-21 19:04:23,358 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-21 19:04:23,359 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 17 [2020-08-21 19:04:23,360 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 19:04:23,368 INFO L225 Difference]: With dead ends: 52 [2020-08-21 19:04:23,368 INFO L226 Difference]: Without dead ends: 25 [2020-08-21 19:04:23,372 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 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 19:04:23,390 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2020-08-21 19:04:23,407 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 25. [2020-08-21 19:04:23,409 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2020-08-21 19:04:23,410 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 28 transitions. [2020-08-21 19:04:23,412 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 28 transitions. Word has length 17 [2020-08-21 19:04:23,412 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 19:04:23,412 INFO L479 AbstractCegarLoop]: Abstraction has 25 states and 28 transitions. [2020-08-21 19:04:23,412 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-21 19:04:23,413 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 28 transitions. [2020-08-21 19:04:23,413 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-08-21 19:04:23,414 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 19:04:23,414 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 19:04:23,414 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-21 19:04:23,415 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 19:04:23,415 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 19:04:23,415 INFO L82 PathProgramCache]: Analyzing trace with hash -1687882214, now seen corresponding path program 1 times [2020-08-21 19:04:23,415 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 19:04:23,416 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [172252824] [2020-08-21 19:04:23,416 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 19:04:23,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:04:23,572 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 19:04:23,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:04:23,581 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 19:04:23,581 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [172252824] [2020-08-21 19:04:23,582 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 19:04:23,582 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-21 19:04:23,582 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1794267008] [2020-08-21 19:04:23,584 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-21 19:04:23,584 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 19:04:23,585 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-21 19:04:23,585 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-08-21 19:04:23,585 INFO L87 Difference]: Start difference. First operand 25 states and 28 transitions. Second operand 5 states. [2020-08-21 19:04:23,747 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 19:04:23,747 INFO L93 Difference]: Finished difference Result 57 states and 68 transitions. [2020-08-21 19:04:23,748 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-21 19:04:23,748 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 17 [2020-08-21 19:04:23,748 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 19:04:23,751 INFO L225 Difference]: With dead ends: 57 [2020-08-21 19:04:23,751 INFO L226 Difference]: Without dead ends: 35 [2020-08-21 19:04:23,753 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-08-21 19:04:23,753 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2020-08-21 19:04:23,764 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 28. [2020-08-21 19:04:23,764 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2020-08-21 19:04:23,766 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 31 transitions. [2020-08-21 19:04:23,766 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 31 transitions. Word has length 17 [2020-08-21 19:04:23,766 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 19:04:23,766 INFO L479 AbstractCegarLoop]: Abstraction has 28 states and 31 transitions. [2020-08-21 19:04:23,767 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-21 19:04:23,767 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 31 transitions. [2020-08-21 19:04:23,767 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-08-21 19:04:23,768 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 19:04:23,768 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] [2020-08-21 19:04:23,768 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-21 19:04:23,769 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 19:04:23,769 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 19:04:23,769 INFO L82 PathProgramCache]: Analyzing trace with hash -825329612, now seen corresponding path program 1 times [2020-08-21 19:04:23,769 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 19:04:23,770 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [735491471] [2020-08-21 19:04:23,770 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 19:04:23,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-21 19:04:23,910 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-08-21 19:04:23,911 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-08-21 19:04:23,915 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-21 19:04:23,934 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.08 07:04:23 BoogieIcfgContainer [2020-08-21 19:04:23,934 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-21 19:04:23,938 INFO L168 Benchmark]: Toolchain (without parser) took 1892.04 ms. Allocated memory was 144.7 MB in the beginning and 204.5 MB in the end (delta: 59.8 MB). Free memory was 100.8 MB in the beginning and 106.1 MB in the end (delta: -5.3 MB). Peak memory consumption was 54.4 MB. Max. memory is 7.1 GB. [2020-08-21 19:04:23,939 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 144.7 MB. Free memory was 119.5 MB in the beginning and 119.3 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-08-21 19:04:23,940 INFO L168 Benchmark]: CACSL2BoogieTranslator took 281.17 ms. Allocated memory is still 144.7 MB. Free memory was 100.6 MB in the beginning and 89.7 MB in the end (delta: 10.8 MB). Peak memory consumption was 10.8 MB. Max. memory is 7.1 GB. [2020-08-21 19:04:23,941 INFO L168 Benchmark]: Boogie Preprocessor took 166.00 ms. Allocated memory was 144.7 MB in the beginning and 204.5 MB in the end (delta: 59.8 MB). Free memory was 89.7 MB in the beginning and 181.3 MB in the end (delta: -91.6 MB). Peak memory consumption was 9.7 MB. Max. memory is 7.1 GB. [2020-08-21 19:04:23,942 INFO L168 Benchmark]: RCFGBuilder took 455.60 ms. Allocated memory is still 204.5 MB. Free memory was 181.3 MB in the beginning and 164.0 MB in the end (delta: 17.3 MB). Peak memory consumption was 17.3 MB. Max. memory is 7.1 GB. [2020-08-21 19:04:23,943 INFO L168 Benchmark]: TraceAbstraction took 984.46 ms. Allocated memory is still 204.5 MB. Free memory was 163.4 MB in the beginning and 106.1 MB in the end (delta: 57.3 MB). Peak memory consumption was 57.3 MB. Max. memory is 7.1 GB. [2020-08-21 19:04:23,947 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 144.7 MB. Free memory was 119.5 MB in the beginning and 119.3 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 281.17 ms. Allocated memory is still 144.7 MB. Free memory was 100.6 MB in the beginning and 89.7 MB in the end (delta: 10.8 MB). Peak memory consumption was 10.8 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 166.00 ms. Allocated memory was 144.7 MB in the beginning and 204.5 MB in the end (delta: 59.8 MB). Free memory was 89.7 MB in the beginning and 181.3 MB in the end (delta: -91.6 MB). Peak memory consumption was 9.7 MB. Max. memory is 7.1 GB. * RCFGBuilder took 455.60 ms. Allocated memory is still 204.5 MB. Free memory was 181.3 MB in the beginning and 164.0 MB in the end (delta: 17.3 MB). Peak memory consumption was 17.3 MB. Max. memory is 7.1 GB. * TraceAbstraction took 984.46 ms. Allocated memory is still 204.5 MB. Free memory was 163.4 MB in the beginning and 106.1 MB in the end (delta: 57.3 MB). Peak memory consumption was 57.3 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 6]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L14] unsigned int M = __VERIFIER_nondet_uint(); [L15] int A[M], B[M], C[M]; [L16] unsigned int i; [L18] i=0 [L18] COND TRUE i