/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 -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/array-fpi/indp5f.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-72570d3 [2020-08-22 16:56:28,652 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-22 16:56:28,654 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-22 16:56:28,680 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-22 16:56:28,681 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-22 16:56:28,682 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-22 16:56:28,683 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-22 16:56:28,685 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-22 16:56:28,686 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-22 16:56:28,687 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-22 16:56:28,688 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-22 16:56:28,689 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-22 16:56:28,689 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-22 16:56:28,690 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-22 16:56:28,691 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-22 16:56:28,692 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-22 16:56:28,693 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-22 16:56:28,694 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-22 16:56:28,695 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-22 16:56:28,697 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-22 16:56:28,698 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-22 16:56:28,699 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-22 16:56:28,700 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-22 16:56:28,701 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-22 16:56:28,704 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-08-22 16:56:28,711 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-22 16:56:28,712 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-22 16:56:28,712 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-22 16:56:28,713 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-08-22 16:56:28,750 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-22 16:56:28,751 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-22 16:56:28,752 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-22 16:56:28,752 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-22 16:56:28,752 INFO L138 SettingsManager]: * Use SBE=true [2020-08-22 16:56:28,752 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-22 16:56:28,754 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-22 16:56:28,754 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-22 16:56:28,754 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-22 16:56:28,754 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-22 16:56:28,755 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-22 16:56:28,755 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-22 16:56:28,755 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-22 16:56:28,755 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-22 16:56:28,756 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-22 16:56:28,757 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-22 16:56:28,757 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-22 16:56:28,758 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-22 16:56:28,758 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-22 16:56:28,758 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-22 16:56:28,758 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-22 16:56:28,758 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-22 16:56:28,759 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-22 16:56:28,759 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-22 16:56:28,759 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-22 16:56:28,759 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-22 16:56:28,759 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-22 16:56:28,760 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-22 16:56:28,760 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-22 16:56:28,760 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-08-22 16:56:29,080 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-22 16:56:29,093 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-22 16:56:29,096 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-22 16:56:29,098 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-22 16:56:29,098 INFO L275 PluginConnector]: CDTParser initialized [2020-08-22 16:56:29,099 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-fpi/indp5f.c [2020-08-22 16:56:29,158 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/63aaa9a59/64befaabba5e41d0bde1cd2eecb98159/FLAGb05cb70e1 [2020-08-22 16:56:29,584 INFO L306 CDTParser]: Found 1 translation units. [2020-08-22 16:56:29,584 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/array-fpi/indp5f.c [2020-08-22 16:56:29,596 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/63aaa9a59/64befaabba5e41d0bde1cd2eecb98159/FLAGb05cb70e1 [2020-08-22 16:56:29,945 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/63aaa9a59/64befaabba5e41d0bde1cd2eecb98159 [2020-08-22 16:56:29,956 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-22 16:56:29,958 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-22 16:56:29,959 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-22 16:56:29,959 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-22 16:56:29,964 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-22 16:56:29,965 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.08 04:56:29" (1/1) ... [2020-08-22 16:56:29,969 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@d6fb34f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:56:29, skipping insertion in model container [2020-08-22 16:56:29,969 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.08 04:56:29" (1/1) ... [2020-08-22 16:56:29,978 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-22 16:56:30,000 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-22 16:56:30,263 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-22 16:56:30,275 INFO L203 MainTranslator]: Completed pre-run [2020-08-22 16:56:30,297 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-22 16:56:30,398 INFO L208 MainTranslator]: Completed translation [2020-08-22 16:56:30,399 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:56:30 WrapperNode [2020-08-22 16:56:30,399 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-22 16:56:30,400 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-22 16:56:30,400 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-22 16:56:30,400 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-22 16:56:30,414 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:56:30" (1/1) ... [2020-08-22 16:56:30,415 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:56:30" (1/1) ... [2020-08-22 16:56:30,425 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:56:30" (1/1) ... [2020-08-22 16:56:30,426 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:56:30" (1/1) ... [2020-08-22 16:56:30,435 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:56:30" (1/1) ... [2020-08-22 16:56:30,441 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:56:30" (1/1) ... [2020-08-22 16:56:30,443 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:56:30" (1/1) ... [2020-08-22 16:56:30,445 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-22 16:56:30,446 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-22 16:56:30,446 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-22 16:56:30,446 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-22 16:56:30,447 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:56:30" (1/1) ... No working directory specified, using /storage/repos/ultimate/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 [2020-08-22 16:56:30,512 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-22 16:56:30,512 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-22 16:56:30,512 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-08-22 16:56:30,512 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-08-22 16:56:30,512 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-22 16:56:30,513 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-22 16:56:30,513 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-08-22 16:56:30,513 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-08-22 16:56:30,513 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-08-22 16:56:30,513 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-22 16:56:30,513 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-22 16:56:30,514 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-22 16:56:30,514 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-22 16:56:30,514 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-22 16:56:30,514 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-22 16:56:30,514 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-22 16:56:30,514 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-22 16:56:30,515 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-22 16:56:30,515 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-22 16:56:30,814 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-22 16:56:30,815 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-08-22 16:56:30,819 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.08 04:56:30 BoogieIcfgContainer [2020-08-22 16:56:30,820 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-22 16:56:30,821 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-22 16:56:30,821 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-22 16:56:30,825 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-22 16:56:30,825 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.08 04:56:29" (1/3) ... [2020-08-22 16:56:30,826 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@31a43e8a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.08 04:56:30, skipping insertion in model container [2020-08-22 16:56:30,827 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:56:30" (2/3) ... [2020-08-22 16:56:30,827 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@31a43e8a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.08 04:56:30, skipping insertion in model container [2020-08-22 16:56:30,827 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.08 04:56:30" (3/3) ... [2020-08-22 16:56:30,830 INFO L109 eAbstractionObserver]: Analyzing ICFG indp5f.c [2020-08-22 16:56:30,844 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-08-22 16:56:30,852 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-22 16:56:30,866 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-22 16:56:30,913 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-22 16:56:30,914 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-22 16:56:30,914 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-08-22 16:56:30,914 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-22 16:56:30,914 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-22 16:56:30,915 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-22 16:56:30,915 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-22 16:56:30,915 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-22 16:56:30,944 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states. [2020-08-22 16:56:30,950 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-08-22 16:56:30,950 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 16:56:30,951 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] [2020-08-22 16:56:30,951 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 16:56:30,957 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 16:56:30,957 INFO L82 PathProgramCache]: Analyzing trace with hash -976607933, now seen corresponding path program 1 times [2020-08-22 16:56:30,965 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-08-22 16:56:30,965 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [529218311] [2020-08-22 16:56:30,966 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 16:56:31,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:56:31,162 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 16:56:31,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:56:31,173 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-08-22 16:56:31,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:56:31,184 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 16:56:31,185 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [529218311] [2020-08-22 16:56:31,186 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 16:56:31,187 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-22 16:56:31,188 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1672977427] [2020-08-22 16:56:31,193 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-22 16:56:31,193 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-08-22 16:56:31,204 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-22 16:56:31,204 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-22 16:56:31,206 INFO L87 Difference]: Start difference. First operand 40 states. Second operand 3 states. [2020-08-22 16:56:31,334 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 16:56:31,334 INFO L93 Difference]: Finished difference Result 70 states and 93 transitions. [2020-08-22 16:56:31,335 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-22 16:56:31,336 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 27 [2020-08-22 16:56:31,337 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 16:56:31,346 INFO L225 Difference]: With dead ends: 70 [2020-08-22 16:56:31,346 INFO L226 Difference]: Without dead ends: 33 [2020-08-22 16:56:31,350 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 [2020-08-22 16:56:31,370 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2020-08-22 16:56:31,391 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 33. [2020-08-22 16:56:31,392 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2020-08-22 16:56:31,394 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 37 transitions. [2020-08-22 16:56:31,395 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 37 transitions. Word has length 27 [2020-08-22 16:56:31,396 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 16:56:31,396 INFO L479 AbstractCegarLoop]: Abstraction has 33 states and 37 transitions. [2020-08-22 16:56:31,396 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-22 16:56:31,396 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 37 transitions. [2020-08-22 16:56:31,397 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-08-22 16:56:31,398 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 16:56:31,398 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] [2020-08-22 16:56:31,398 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-22 16:56:31,399 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 16:56:31,399 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 16:56:31,399 INFO L82 PathProgramCache]: Analyzing trace with hash -714487667, now seen corresponding path program 1 times [2020-08-22 16:56:31,400 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-08-22 16:56:31,400 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [187587234] [2020-08-22 16:56:31,401 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 16:56:31,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:56:31,522 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 16:56:31,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:56:31,530 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-08-22 16:56:31,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:56:31,541 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 16:56:31,542 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [187587234] [2020-08-22 16:56:31,542 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 16:56:31,543 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-22 16:56:31,543 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [389602551] [2020-08-22 16:56:31,545 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-22 16:56:31,545 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-08-22 16:56:31,545 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-22 16:56:31,546 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-08-22 16:56:31,546 INFO L87 Difference]: Start difference. First operand 33 states and 37 transitions. Second operand 5 states. [2020-08-22 16:56:31,724 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 16:56:31,724 INFO L93 Difference]: Finished difference Result 61 states and 73 transitions. [2020-08-22 16:56:31,725 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-08-22 16:56:31,725 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 27 [2020-08-22 16:56:31,725 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 16:56:31,726 INFO L225 Difference]: With dead ends: 61 [2020-08-22 16:56:31,727 INFO L226 Difference]: Without dead ends: 43 [2020-08-22 16:56:31,728 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 [2020-08-22 16:56:31,729 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2020-08-22 16:56:31,737 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 38. [2020-08-22 16:56:31,738 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2020-08-22 16:56:31,739 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 42 transitions. [2020-08-22 16:56:31,739 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 42 transitions. Word has length 27 [2020-08-22 16:56:31,740 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 16:56:31,740 INFO L479 AbstractCegarLoop]: Abstraction has 38 states and 42 transitions. [2020-08-22 16:56:31,740 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-22 16:56:31,740 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 42 transitions. [2020-08-22 16:56:31,741 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2020-08-22 16:56:31,742 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 16:56:31,742 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] [2020-08-22 16:56:31,742 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-22 16:56:31,742 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 16:56:31,743 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 16:56:31,743 INFO L82 PathProgramCache]: Analyzing trace with hash -1064141225, now seen corresponding path program 1 times [2020-08-22 16:56:31,743 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-08-22 16:56:31,744 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [607510294] [2020-08-22 16:56:31,744 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 16:56:31,762 ERROR L271 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-08-22 16:56:31,762 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [447573974] [2020-08-22 16:56:31,762 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-08-22 16:56:31,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-22 16:56:31,853 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-08-22 16:56:31,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-22 16:56:31,896 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-08-22 16:56:31,927 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-08-22 16:56:31,928 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-08-22 16:56:32,143 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2020-08-22 16:56:32,185 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.08 04:56:32 BoogieIcfgContainer [2020-08-22 16:56:32,185 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-22 16:56:32,188 INFO L168 Benchmark]: Toolchain (without parser) took 2229.70 ms. Allocated memory was 140.5 MB in the beginning and 235.9 MB in the end (delta: 95.4 MB). Free memory was 103.6 MB in the beginning and 199.9 MB in the end (delta: -96.4 MB). Peak memory consumption was 82.9 MB. Max. memory is 7.1 GB. [2020-08-22 16:56:32,189 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 140.5 MB. Free memory was 122.0 MB in the beginning and 121.8 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-08-22 16:56:32,190 INFO L168 Benchmark]: CACSL2BoogieTranslator took 440.39 ms. Allocated memory was 140.5 MB in the beginning and 202.9 MB in the end (delta: 62.4 MB). Free memory was 103.3 MB in the beginning and 181.8 MB in the end (delta: -78.4 MB). Peak memory consumption was 22.6 MB. Max. memory is 7.1 GB. [2020-08-22 16:56:32,191 INFO L168 Benchmark]: Boogie Preprocessor took 45.80 ms. Allocated memory is still 202.9 MB. Free memory was 181.8 MB in the beginning and 179.4 MB in the end (delta: 2.4 MB). Peak memory consumption was 2.4 MB. Max. memory is 7.1 GB. [2020-08-22 16:56:32,192 INFO L168 Benchmark]: RCFGBuilder took 373.95 ms. Allocated memory is still 202.9 MB. Free memory was 179.4 MB in the beginning and 160.8 MB in the end (delta: 18.6 MB). Peak memory consumption was 18.6 MB. Max. memory is 7.1 GB. [2020-08-22 16:56:32,193 INFO L168 Benchmark]: TraceAbstraction took 1363.92 ms. Allocated memory was 202.9 MB in the beginning and 235.9 MB in the end (delta: 33.0 MB). Free memory was 160.2 MB in the beginning and 199.9 MB in the end (delta: -39.8 MB). Peak memory consumption was 77.1 MB. Max. memory is 7.1 GB. [2020-08-22 16:56:32,198 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 140.5 MB. Free memory was 122.0 MB in the beginning and 121.8 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 440.39 ms. Allocated memory was 140.5 MB in the beginning and 202.9 MB in the end (delta: 62.4 MB). Free memory was 103.3 MB in the beginning and 181.8 MB in the end (delta: -78.4 MB). Peak memory consumption was 22.6 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 45.80 ms. Allocated memory is still 202.9 MB. Free memory was 181.8 MB in the beginning and 179.4 MB in the end (delta: 2.4 MB). Peak memory consumption was 2.4 MB. Max. memory is 7.1 GB. * RCFGBuilder took 373.95 ms. Allocated memory is still 202.9 MB. Free memory was 179.4 MB in the beginning and 160.8 MB in the end (delta: 18.6 MB). Peak memory consumption was 18.6 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1363.92 ms. Allocated memory was 202.9 MB in the beginning and 235.9 MB in the end (delta: 33.0 MB). Free memory was 160.2 MB in the beginning and 199.9 MB in the end (delta: -39.8 MB). Peak memory consumption was 77.1 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 13]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L17] int N; VAL [\old(N)=6, N=0] [L21] N = __VERIFIER_nondet_int() [L22] COND FALSE !(N <= 0) VAL [\old(N)=0, N=1] [L23] CALL assume_abort_if_not(N <= 2147483647/sizeof(int)) VAL [\old(cond)=1, \old(N)=0, N=1] [L11] COND FALSE !(!cond) VAL [\old(cond)=1, \old(N)=0, cond=1, N=1] [L23] RET assume_abort_if_not(N <= 2147483647/sizeof(int)) VAL [\old(N)=0, N=1] [L25] int i; [L26] long long *a = malloc(sizeof(long long)*N); [L27] long long sum[1]; [L29] sum[0] = 1 [L30] i=0 VAL [\old(N)=0, a={-1:0}, i=0, malloc(sizeof(long long)*N)={-1:0}, N=1, sum={2:0}] [L30] COND TRUE i