/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=5 --traceabstraction.additional.smt.options interpolation-heuristic=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=1.0 -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/array-fpi/ss2f.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-5644d1e-m [2020-08-19 02:53:16,687 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-19 02:53:16,690 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-19 02:53:16,730 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-19 02:53:16,730 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-19 02:53:16,740 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-19 02:53:16,742 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-19 02:53:16,746 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-19 02:53:16,749 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-19 02:53:16,752 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-19 02:53:16,753 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-19 02:53:16,754 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-19 02:53:16,754 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-19 02:53:16,757 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-19 02:53:16,759 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-19 02:53:16,760 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-19 02:53:16,762 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-19 02:53:16,763 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-19 02:53:16,764 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-19 02:53:16,774 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-19 02:53:16,776 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-19 02:53:16,777 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-19 02:53:16,778 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-19 02:53:16,779 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-19 02:53:16,784 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-19 02:53:16,784 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-19 02:53:16,784 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-19 02:53:16,785 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-19 02:53:16,785 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-19 02:53:16,786 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... 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[2020-08-19 02:53:16,796 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-19 02:53:16,796 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-19 02:53:16,797 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-19 02:53:16,798 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 [2020-08-19 02:53:16,821 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-19 02:53:16,821 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-19 02:53:16,822 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-19 02:53:16,822 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-19 02:53:16,822 INFO L138 SettingsManager]: * Use SBE=true [2020-08-19 02:53:16,823 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-19 02:53:16,823 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-19 02:53:16,823 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-19 02:53:16,823 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-19 02:53:16,823 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-19 02:53:16,824 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-19 02:53:16,824 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-19 02:53:16,824 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-19 02:53:16,824 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-19 02:53:16,824 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-19 02:53:16,825 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-19 02:53:16,825 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-19 02:53:16,825 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-19 02:53:16,825 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-19 02:53:16,825 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-19 02:53:16,826 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-19 02:53:16,826 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-19 02:53:16,826 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-19 02:53:16,826 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-19 02:53:16,826 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-19 02:53:16,827 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-19 02:53:16,827 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-19 02:53:16,827 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-19 02:53:16,827 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-19 02:53:16,827 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=5;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=1.0; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=1.0; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=1.0; [2020-08-19 02:53:17,157 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-19 02:53:17,170 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-19 02:53:17,174 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-19 02:53:17,176 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-19 02:53:17,176 INFO L275 PluginConnector]: CDTParser initialized [2020-08-19 02:53:17,177 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-fpi/ss2f.c [2020-08-19 02:53:17,257 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/6a7812609/41b3098b6d63408e8325e66b189ecf7e/FLAG413ba3512 [2020-08-19 02:53:17,693 INFO L306 CDTParser]: Found 1 translation units. [2020-08-19 02:53:17,693 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/array-fpi/ss2f.c [2020-08-19 02:53:17,701 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/6a7812609/41b3098b6d63408e8325e66b189ecf7e/FLAG413ba3512 [2020-08-19 02:53:18,065 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/6a7812609/41b3098b6d63408e8325e66b189ecf7e [2020-08-19 02:53:18,074 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-19 02:53:18,075 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-19 02:53:18,076 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-19 02:53:18,077 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-19 02:53:18,080 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-19 02:53:18,081 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.08 02:53:18" (1/1) ... [2020-08-19 02:53:18,084 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@42dfe0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 02:53:18, skipping insertion in model container [2020-08-19 02:53:18,084 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.08 02:53:18" (1/1) ... [2020-08-19 02:53:18,092 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-19 02:53:18,116 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-19 02:53:18,385 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-19 02:53:18,394 INFO L203 MainTranslator]: Completed pre-run [2020-08-19 02:53:18,421 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-19 02:53:18,530 INFO L208 MainTranslator]: Completed translation [2020-08-19 02:53:18,531 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 02:53:18 WrapperNode [2020-08-19 02:53:18,533 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-19 02:53:18,534 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-19 02:53:18,534 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-19 02:53:18,534 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-19 02:53:18,545 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 02:53:18" (1/1) ... [2020-08-19 02:53:18,546 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 02:53:18" (1/1) ... [2020-08-19 02:53:18,556 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 02:53:18" (1/1) ... [2020-08-19 02:53:18,557 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 02:53:18" (1/1) ... [2020-08-19 02:53:18,567 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 02:53:18" (1/1) ... [2020-08-19 02:53:18,574 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 02:53:18" (1/1) ... [2020-08-19 02:53:18,576 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 02:53:18" (1/1) ... [2020-08-19 02:53:18,579 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-19 02:53:18,580 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-19 02:53:18,580 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-19 02:53:18,580 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-19 02:53:18,581 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 02:53:18" (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 [2020-08-19 02:53:18,639 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-19 02:53:18,639 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-19 02:53:18,639 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-08-19 02:53:18,640 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-08-19 02:53:18,640 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-19 02:53:18,640 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-19 02:53:18,640 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-08-19 02:53:18,640 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-08-19 02:53:18,641 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-08-19 02:53:18,641 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-19 02:53:18,641 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-19 02:53:18,641 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-19 02:53:18,641 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-19 02:53:18,641 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-19 02:53:18,642 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-19 02:53:18,642 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-19 02:53:18,642 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-19 02:53:18,642 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-19 02:53:18,642 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-19 02:53:19,005 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-19 02:53:19,005 INFO L295 CfgBuilder]: Removed 7 assume(true) statements. [2020-08-19 02:53:19,009 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.08 02:53:19 BoogieIcfgContainer [2020-08-19 02:53:19,009 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-19 02:53:19,011 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-19 02:53:19,011 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-19 02:53:19,014 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-19 02:53:19,014 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.08 02:53:18" (1/3) ... [2020-08-19 02:53:19,015 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5d12d16f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.08 02:53:19, skipping insertion in model container [2020-08-19 02:53:19,015 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 02:53:18" (2/3) ... [2020-08-19 02:53:19,016 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5d12d16f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.08 02:53:19, skipping insertion in model container [2020-08-19 02:53:19,016 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.08 02:53:19" (3/3) ... [2020-08-19 02:53:19,017 INFO L109 eAbstractionObserver]: Analyzing ICFG ss2f.c [2020-08-19 02:53:19,028 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-19 02:53:19,036 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-19 02:53:19,050 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-19 02:53:19,076 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-19 02:53:19,076 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-19 02:53:19,077 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-19 02:53:19,077 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-19 02:53:19,077 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-19 02:53:19,077 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-19 02:53:19,077 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-19 02:53:19,077 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-19 02:53:19,094 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states. [2020-08-19 02:53:19,100 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-08-19 02:53:19,100 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 02:53:19,101 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] [2020-08-19 02:53:19,101 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 02:53:19,107 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 02:53:19,107 INFO L82 PathProgramCache]: Analyzing trace with hash -96589013, now seen corresponding path program 1 times [2020-08-19 02:53:19,116 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 02:53:19,117 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1319456631] [2020-08-19 02:53:19,117 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 02:53:19,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:53:19,316 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 02:53:19,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:53:19,327 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-08-19 02:53:19,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:53:19,338 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 02:53:19,339 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1319456631] [2020-08-19 02:53:19,341 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 02:53:19,342 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-19 02:53:19,343 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1173035150] [2020-08-19 02:53:19,348 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-19 02:53:19,349 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 02:53:19,360 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-19 02:53:19,361 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-19 02:53:19,362 INFO L87 Difference]: Start difference. First operand 46 states. Second operand 3 states. [2020-08-19 02:53:19,520 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 02:53:19,520 INFO L93 Difference]: Finished difference Result 82 states and 113 transitions. [2020-08-19 02:53:19,521 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-19 02:53:19,523 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 30 [2020-08-19 02:53:19,523 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 02:53:19,532 INFO L225 Difference]: With dead ends: 82 [2020-08-19 02:53:19,533 INFO L226 Difference]: Without dead ends: 41 [2020-08-19 02:53:19,538 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 [2020-08-19 02:53:19,558 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2020-08-19 02:53:19,580 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 41. [2020-08-19 02:53:19,582 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2020-08-19 02:53:19,583 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 47 transitions. [2020-08-19 02:53:19,585 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 47 transitions. Word has length 30 [2020-08-19 02:53:19,585 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 02:53:19,586 INFO L479 AbstractCegarLoop]: Abstraction has 41 states and 47 transitions. [2020-08-19 02:53:19,586 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-19 02:53:19,586 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 47 transitions. [2020-08-19 02:53:19,587 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-08-19 02:53:19,588 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 02:53:19,588 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] [2020-08-19 02:53:19,588 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-19 02:53:19,589 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 02:53:19,589 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 02:53:19,589 INFO L82 PathProgramCache]: Analyzing trace with hash -552343525, now seen corresponding path program 1 times [2020-08-19 02:53:19,590 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 02:53:19,590 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [199679851] [2020-08-19 02:53:19,590 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 02:53:19,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:53:19,696 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 02:53:19,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:53:19,703 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-08-19 02:53:19,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:53:19,713 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 02:53:19,714 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [199679851] [2020-08-19 02:53:19,714 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 02:53:19,714 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-19 02:53:19,714 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [356721680] [2020-08-19 02:53:19,716 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-19 02:53:19,717 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 02:53:19,717 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-19 02:53:19,717 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-08-19 02:53:19,717 INFO L87 Difference]: Start difference. First operand 41 states and 47 transitions. Second operand 5 states. [2020-08-19 02:53:19,929 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 02:53:19,929 INFO L93 Difference]: Finished difference Result 83 states and 101 transitions. [2020-08-19 02:53:19,930 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-08-19 02:53:19,930 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 30 [2020-08-19 02:53:19,931 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 02:53:19,934 INFO L225 Difference]: With dead ends: 83 [2020-08-19 02:53:19,934 INFO L226 Difference]: Without dead ends: 57 [2020-08-19 02:53:19,935 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 [2020-08-19 02:53:19,936 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2020-08-19 02:53:19,950 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 47. [2020-08-19 02:53:19,951 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2020-08-19 02:53:19,952 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 53 transitions. [2020-08-19 02:53:19,953 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 53 transitions. Word has length 30 [2020-08-19 02:53:19,953 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 02:53:19,953 INFO L479 AbstractCegarLoop]: Abstraction has 47 states and 53 transitions. [2020-08-19 02:53:19,953 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-19 02:53:19,954 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 53 transitions. [2020-08-19 02:53:19,955 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2020-08-19 02:53:19,955 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 02:53:19,955 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, 1, 1, 1, 1] [2020-08-19 02:53:19,956 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-19 02:53:19,956 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 02:53:19,956 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 02:53:19,956 INFO L82 PathProgramCache]: Analyzing trace with hash 1488976591, now seen corresponding path program 1 times [2020-08-19 02:53:19,957 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 02:53:19,957 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [396924985] [2020-08-19 02:53:19,957 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 02:53:20,013 ERROR L271 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-08-19 02:53:20,014 WARN L168 FreeRefinementEngine]: Strategy FIXED_PREFERENCES was unsuccessful and could not determine trace feasibility [2020-08-19 02:53:20,014 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-08-19 02:53:20,018 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-19 02:53:20,038 WARN L231 ceAbstractionStarter]: Unable to decide correctness. Please check the following counterexample manually. [2020-08-19 02:53:20,038 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.08 02:53:20 BoogieIcfgContainer [2020-08-19 02:53:20,039 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-19 02:53:20,042 INFO L168 Benchmark]: Toolchain (without parser) took 1965.24 ms. Allocated memory was 140.0 MB in the beginning and 234.9 MB in the end (delta: 94.9 MB). Free memory was 103.1 MB in the beginning and 202.7 MB in the end (delta: -99.7 MB). Peak memory consumption was 83.3 MB. Max. memory is 7.1 GB. [2020-08-19 02:53:20,043 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 121.3 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-08-19 02:53:20,044 INFO L168 Benchmark]: CACSL2BoogieTranslator took 456.97 ms. Allocated memory was 140.0 MB in the beginning and 202.4 MB in the end (delta: 62.4 MB). Free memory was 102.9 MB in the beginning and 181.3 MB in the end (delta: -78.5 MB). Peak memory consumption was 22.5 MB. Max. memory is 7.1 GB. [2020-08-19 02:53:20,045 INFO L168 Benchmark]: Boogie Preprocessor took 45.56 ms. Allocated memory is still 202.4 MB. Free memory was 181.3 MB in the beginning and 178.7 MB in the end (delta: 2.6 MB). Peak memory consumption was 2.6 MB. Max. memory is 7.1 GB. [2020-08-19 02:53:20,046 INFO L168 Benchmark]: RCFGBuilder took 429.77 ms. Allocated memory is still 202.4 MB. Free memory was 178.3 MB in the beginning and 157.9 MB in the end (delta: 20.4 MB). Peak memory consumption was 20.4 MB. Max. memory is 7.1 GB. [2020-08-19 02:53:20,047 INFO L168 Benchmark]: TraceAbstraction took 1028.19 ms. Allocated memory was 202.4 MB in the beginning and 234.9 MB in the end (delta: 32.5 MB). Free memory was 157.2 MB in the beginning and 202.7 MB in the end (delta: -45.5 MB). Peak memory consumption was 75.1 MB. Max. memory is 7.1 GB. [2020-08-19 02:53:20,051 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 121.3 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 456.97 ms. Allocated memory was 140.0 MB in the beginning and 202.4 MB in the end (delta: 62.4 MB). Free memory was 102.9 MB in the beginning and 181.3 MB in the end (delta: -78.5 MB). Peak memory consumption was 22.5 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 45.56 ms. Allocated memory is still 202.4 MB. Free memory was 181.3 MB in the beginning and 178.7 MB in the end (delta: 2.6 MB). Peak memory consumption was 2.6 MB. Max. memory is 7.1 GB. * RCFGBuilder took 429.77 ms. Allocated memory is still 202.4 MB. Free memory was 178.3 MB in the beginning and 157.9 MB in the end (delta: 20.4 MB). Peak memory consumption was 20.4 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1028.19 ms. Allocated memory was 202.4 MB in the beginning and 234.9 MB in the end (delta: 32.5 MB). Free memory was 157.2 MB in the beginning and 202.7 MB in the end (delta: -45.5 MB). Peak memory consumption was 75.1 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