/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/condnf.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-72570d3 [2020-08-22 16:56:19,184 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-22 16:56:19,187 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-22 16:56:19,227 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-22 16:56:19,228 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-22 16:56:19,236 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-22 16:56:19,239 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-22 16:56:19,243 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-22 16:56:19,246 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-22 16:56:19,249 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-22 16:56:19,250 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-22 16:56:19,251 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-22 16:56:19,251 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-22 16:56:19,256 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-22 16:56:19,257 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-22 16:56:19,258 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-22 16:56:19,259 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-22 16:56:19,259 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-22 16:56:19,260 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-22 16:56:19,263 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-22 16:56:19,264 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-22 16:56:19,265 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-22 16:56:19,266 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-22 16:56:19,266 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-22 16:56:19,278 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-08-22 16:56:19,287 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-22 16:56:19,289 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-22 16:56:19,290 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-22 16:56:19,291 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 16:56:19,334 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-22 16:56:19,334 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-22 16:56:19,336 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-22 16:56:19,336 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-22 16:56:19,336 INFO L138 SettingsManager]: * Use SBE=true [2020-08-22 16:56:19,336 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-22 16:56:19,337 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-22 16:56:19,337 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-22 16:56:19,337 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-22 16:56:19,337 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-22 16:56:19,338 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-22 16:56:19,338 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-22 16:56:19,339 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-22 16:56:19,339 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-22 16:56:19,339 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-22 16:56:19,339 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-22 16:56:19,340 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-22 16:56:19,340 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-22 16:56:19,340 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-22 16:56:19,340 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-22 16:56:19,340 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-22 16:56:19,341 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-22 16:56:19,341 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-22 16:56:19,341 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-22 16:56:19,341 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-22 16:56:19,341 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-22 16:56:19,342 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-22 16:56:19,342 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-22 16:56:19,342 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-22 16:56:19,342 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-08-22 16:56:19,653 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-22 16:56:19,671 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-22 16:56:19,675 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-22 16:56:19,676 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-22 16:56:19,676 INFO L275 PluginConnector]: CDTParser initialized [2020-08-22 16:56:19,677 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-fpi/condnf.c [2020-08-22 16:56:19,731 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8d3fc33d6/9593d2289beb47b49271e4f1771adf2f/FLAG97e1547b0 [2020-08-22 16:56:20,162 INFO L306 CDTParser]: Found 1 translation units. [2020-08-22 16:56:20,163 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/array-fpi/condnf.c [2020-08-22 16:56:20,170 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8d3fc33d6/9593d2289beb47b49271e4f1771adf2f/FLAG97e1547b0 [2020-08-22 16:56:20,561 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8d3fc33d6/9593d2289beb47b49271e4f1771adf2f [2020-08-22 16:56:20,569 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-22 16:56:20,570 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-22 16:56:20,571 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-22 16:56:20,572 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-22 16:56:20,575 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-22 16:56:20,576 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.08 04:56:20" (1/1) ... [2020-08-22 16:56:20,579 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@264e4517 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:56:20, skipping insertion in model container [2020-08-22 16:56:20,579 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.08 04:56:20" (1/1) ... [2020-08-22 16:56:20,587 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-22 16:56:20,606 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-22 16:56:20,806 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-22 16:56:20,819 INFO L203 MainTranslator]: Completed pre-run [2020-08-22 16:56:20,840 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-22 16:56:20,859 INFO L208 MainTranslator]: Completed translation [2020-08-22 16:56:20,859 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:56:20 WrapperNode [2020-08-22 16:56:20,860 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-22 16:56:20,860 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-22 16:56:20,860 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-22 16:56:20,861 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-22 16:56:20,962 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:56:20" (1/1) ... [2020-08-22 16:56:20,963 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:56:20" (1/1) ... [2020-08-22 16:56:20,971 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:56:20" (1/1) ... [2020-08-22 16:56:20,971 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:56:20" (1/1) ... [2020-08-22 16:56:20,979 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:56:20" (1/1) ... [2020-08-22 16:56:20,984 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:56:20" (1/1) ... [2020-08-22 16:56:20,985 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:56:20" (1/1) ... [2020-08-22 16:56:20,988 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-22 16:56:20,988 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-22 16:56:20,988 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-22 16:56:20,989 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-22 16:56:20,990 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:56:20" (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 16:56:21,066 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-22 16:56:21,066 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-22 16:56:21,066 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-08-22 16:56:21,066 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-08-22 16:56:21,066 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-22 16:56:21,066 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-22 16:56:21,067 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-08-22 16:56:21,067 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-08-22 16:56:21,067 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-08-22 16:56:21,067 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-22 16:56:21,067 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-22 16:56:21,067 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-22 16:56:21,068 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-22 16:56:21,068 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-22 16:56:21,068 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-22 16:56:21,068 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-22 16:56:21,068 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-22 16:56:21,068 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-22 16:56:21,379 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-22 16:56:21,379 INFO L295 CfgBuilder]: Removed 3 assume(true) statements. [2020-08-22 16:56:21,383 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.08 04:56:21 BoogieIcfgContainer [2020-08-22 16:56:21,383 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-22 16:56:21,385 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-22 16:56:21,385 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-22 16:56:21,388 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-22 16:56:21,388 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.08 04:56:20" (1/3) ... [2020-08-22 16:56:21,389 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3d1c5fce and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.08 04:56:21, skipping insertion in model container [2020-08-22 16:56:21,389 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:56:20" (2/3) ... [2020-08-22 16:56:21,390 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3d1c5fce and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.08 04:56:21, skipping insertion in model container [2020-08-22 16:56:21,390 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.08 04:56:21" (3/3) ... [2020-08-22 16:56:21,392 INFO L109 eAbstractionObserver]: Analyzing ICFG condnf.c [2020-08-22 16:56:21,401 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-08-22 16:56:21,408 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-22 16:56:21,421 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-22 16:56:21,441 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-22 16:56:21,442 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-22 16:56:21,442 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-08-22 16:56:21,442 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-22 16:56:21,442 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-22 16:56:21,442 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-22 16:56:21,442 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-22 16:56:21,442 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-22 16:56:21,460 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states. [2020-08-22 16:56:21,466 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-08-22 16:56:21,466 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 16:56:21,468 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] [2020-08-22 16:56:21,468 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 16:56:21,474 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 16:56:21,474 INFO L82 PathProgramCache]: Analyzing trace with hash -1524373234, now seen corresponding path program 1 times [2020-08-22 16:56:21,484 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-08-22 16:56:21,484 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1443531708] [2020-08-22 16:56:21,485 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 16:56:21,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:56:21,670 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 16:56:21,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:56:21,680 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-08-22 16:56:21,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:56:21,689 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 16:56:21,690 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1443531708] [2020-08-22 16:56:21,691 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 16:56:21,691 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-22 16:56:21,692 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2137944181] [2020-08-22 16:56:21,696 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-22 16:56:21,697 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-08-22 16:56:21,707 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-22 16:56:21,707 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-22 16:56:21,709 INFO L87 Difference]: Start difference. First operand 35 states. Second operand 3 states. [2020-08-22 16:56:21,838 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 16:56:21,839 INFO L93 Difference]: Finished difference Result 60 states and 77 transitions. [2020-08-22 16:56:21,839 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-22 16:56:21,841 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 22 [2020-08-22 16:56:21,842 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 16:56:21,850 INFO L225 Difference]: With dead ends: 60 [2020-08-22 16:56:21,851 INFO L226 Difference]: Without dead ends: 30 [2020-08-22 16:56:21,855 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 16:56:21,871 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2020-08-22 16:56:21,889 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 30. [2020-08-22 16:56:21,891 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2020-08-22 16:56:21,892 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 33 transitions. [2020-08-22 16:56:21,894 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 33 transitions. Word has length 22 [2020-08-22 16:56:21,894 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 16:56:21,894 INFO L479 AbstractCegarLoop]: Abstraction has 30 states and 33 transitions. [2020-08-22 16:56:21,894 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-22 16:56:21,895 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 33 transitions. [2020-08-22 16:56:21,896 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-08-22 16:56:21,896 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 16:56:21,896 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] [2020-08-22 16:56:21,896 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-22 16:56:21,897 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 16:56:21,897 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 16:56:21,897 INFO L82 PathProgramCache]: Analyzing trace with hash -2111179248, now seen corresponding path program 1 times [2020-08-22 16:56:21,897 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-08-22 16:56:21,898 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1382429337] [2020-08-22 16:56:21,898 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 16:56:21,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:56:21,997 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 16:56:21,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:56:22,004 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-08-22 16:56:22,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:56:22,014 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 16:56:22,015 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1382429337] [2020-08-22 16:56:22,015 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 16:56:22,015 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-22 16:56:22,016 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [424313072] [2020-08-22 16:56:22,018 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-22 16:56:22,018 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-08-22 16:56:22,018 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-22 16:56:22,019 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-08-22 16:56:22,019 INFO L87 Difference]: Start difference. First operand 30 states and 33 transitions. Second operand 5 states. [2020-08-22 16:56:22,192 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 16:56:22,193 INFO L93 Difference]: Finished difference Result 54 states and 63 transitions. [2020-08-22 16:56:22,193 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-08-22 16:56:22,193 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 22 [2020-08-22 16:56:22,194 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 16:56:22,197 INFO L225 Difference]: With dead ends: 54 [2020-08-22 16:56:22,197 INFO L226 Difference]: Without dead ends: 39 [2020-08-22 16:56:22,198 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 16:56:22,199 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2020-08-22 16:56:22,211 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 32. [2020-08-22 16:56:22,212 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2020-08-22 16:56:22,213 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 35 transitions. [2020-08-22 16:56:22,213 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 35 transitions. Word has length 22 [2020-08-22 16:56:22,213 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 16:56:22,213 INFO L479 AbstractCegarLoop]: Abstraction has 32 states and 35 transitions. [2020-08-22 16:56:22,214 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-22 16:56:22,214 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 35 transitions. [2020-08-22 16:56:22,215 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-08-22 16:56:22,215 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 16:56:22,215 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 16:56:22,215 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-22 16:56:22,215 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 16:56:22,216 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 16:56:22,216 INFO L82 PathProgramCache]: Analyzing trace with hash 373909448, now seen corresponding path program 1 times [2020-08-22 16:56:22,216 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-08-22 16:56:22,217 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [917177072] [2020-08-22 16:56:22,217 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 16:56:22,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-22 16:56:22,267 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-08-22 16:56:22,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-22 16:56:22,297 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-08-22 16:56:22,324 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-08-22 16:56:22,324 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-08-22 16:56:22,325 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-22 16:56:22,361 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.08 04:56:22 BoogieIcfgContainer [2020-08-22 16:56:22,361 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-22 16:56:22,364 INFO L168 Benchmark]: Toolchain (without parser) took 1793.05 ms. Allocated memory was 147.3 MB in the beginning and 205.0 MB in the end (delta: 57.7 MB). Free memory was 103.5 MB in the beginning and 105.9 MB in the end (delta: -2.5 MB). Peak memory consumption was 55.2 MB. Max. memory is 7.1 GB. [2020-08-22 16:56:22,365 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 147.3 MB. Free memory was 121.9 MB in the beginning and 121.7 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-08-22 16:56:22,366 INFO L168 Benchmark]: CACSL2BoogieTranslator took 288.66 ms. Allocated memory is still 147.3 MB. Free memory was 103.3 MB in the beginning and 93.0 MB in the end (delta: 10.3 MB). Peak memory consumption was 10.3 MB. Max. memory is 7.1 GB. [2020-08-22 16:56:22,367 INFO L168 Benchmark]: Boogie Preprocessor took 127.57 ms. Allocated memory was 147.3 MB in the beginning and 205.0 MB in the end (delta: 57.7 MB). Free memory was 93.0 MB in the beginning and 182.7 MB in the end (delta: -89.7 MB). Peak memory consumption was 10.0 MB. Max. memory is 7.1 GB. [2020-08-22 16:56:22,369 INFO L168 Benchmark]: RCFGBuilder took 395.26 ms. Allocated memory is still 205.0 MB. Free memory was 182.7 MB in the beginning and 165.5 MB in the end (delta: 17.2 MB). Peak memory consumption was 17.2 MB. Max. memory is 7.1 GB. [2020-08-22 16:56:22,370 INFO L168 Benchmark]: TraceAbstraction took 976.55 ms. Allocated memory is still 205.0 MB. Free memory was 164.9 MB in the beginning and 105.9 MB in the end (delta: 58.9 MB). Peak memory consumption was 58.9 MB. Max. memory is 7.1 GB. [2020-08-22 16:56:22,374 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 147.3 MB. Free memory was 121.9 MB in the beginning and 121.7 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 288.66 ms. Allocated memory is still 147.3 MB. Free memory was 103.3 MB in the beginning and 93.0 MB in the end (delta: 10.3 MB). Peak memory consumption was 10.3 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 127.57 ms. Allocated memory was 147.3 MB in the beginning and 205.0 MB in the end (delta: 57.7 MB). Free memory was 93.0 MB in the beginning and 182.7 MB in the end (delta: -89.7 MB). Peak memory consumption was 10.0 MB. Max. memory is 7.1 GB. * RCFGBuilder took 395.26 ms. Allocated memory is still 205.0 MB. Free memory was 182.7 MB in the beginning and 165.5 MB in the end (delta: 17.2 MB). Peak memory consumption was 17.2 MB. Max. memory is 7.1 GB. * TraceAbstraction took 976.55 ms. Allocated memory is still 205.0 MB. Free memory was 164.9 MB in the beginning and 105.9 MB in the end (delta: 58.9 MB). Peak memory consumption was 58.9 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] int *a = malloc(sizeof(int)*N); [L28] i=0 VAL [\old(N)=0, a={-1:0}, i=0, malloc(sizeof(int)*N)={-1:0}, N=1] [L28] COND TRUE i N [L36] EXPR a[i] [L36] a[i] = a[i] [L33] i++ VAL [\old(N)=0, a={-1:0}, i=1, malloc(sizeof(int)*N)={-1:0}, N=1] [L33] COND FALSE !(i