/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 CAMEL_NO_AM -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/array-fpi/condmf.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-79ed534 [2020-07-19 21:44:38,886 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-19 21:44:38,889 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-19 21:44:38,910 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-19 21:44:38,911 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-19 21:44:38,913 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-19 21:44:38,915 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-19 21:44:38,927 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-19 21:44:38,931 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-19 21:44:38,934 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-19 21:44:38,936 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-19 21:44:38,938 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-19 21:44:38,939 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-19 21:44:38,941 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-19 21:44:38,943 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-19 21:44:38,945 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-19 21:44:38,947 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-19 21:44:38,948 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-19 21:44:38,950 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-19 21:44:38,955 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-19 21:44:38,957 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-19 21:44:38,958 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-19 21:44:38,960 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-19 21:44:38,960 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-19 21:44:38,967 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-07-19 21:44:38,979 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-19 21:44:38,980 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-19 21:44:38,982 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-19 21:44:38,983 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 [2020-07-19 21:44:39,019 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-19 21:44:39,020 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-19 21:44:39,021 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-19 21:44:39,021 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-19 21:44:39,021 INFO L138 SettingsManager]: * Use SBE=true [2020-07-19 21:44:39,022 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-19 21:44:39,022 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-19 21:44:39,022 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-19 21:44:39,022 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-19 21:44:39,022 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-19 21:44:39,023 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-19 21:44:39,023 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-19 21:44:39,023 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-19 21:44:39,023 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-19 21:44:39,023 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-19 21:44:39,023 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-19 21:44:39,024 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-19 21:44:39,024 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-19 21:44:39,024 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-19 21:44:39,024 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-19 21:44:39,024 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-19 21:44:39,025 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-19 21:44:39,025 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-19 21:44:39,025 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-07-19 21:44:39,025 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-07-19 21:44:39,025 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-07-19 21:44:39,026 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-19 21:44:39,026 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-19 21:44:39,026 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-07-19 21:44:39,026 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> CAMEL_NO_AM [2020-07-19 21:44:39,317 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-19 21:44:39,329 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-19 21:44:39,332 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-19 21:44:39,333 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-19 21:44:39,334 INFO L275 PluginConnector]: CDTParser initialized [2020-07-19 21:44:39,334 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-fpi/condmf.c [2020-07-19 21:44:39,403 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ecaf2f96f/8464a3626d2b4f76a6eb0453fce7ce6e/FLAG1356fd1d3 [2020-07-19 21:44:39,846 INFO L306 CDTParser]: Found 1 translation units. [2020-07-19 21:44:39,846 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/array-fpi/condmf.c [2020-07-19 21:44:39,852 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ecaf2f96f/8464a3626d2b4f76a6eb0453fce7ce6e/FLAG1356fd1d3 [2020-07-19 21:44:40,285 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ecaf2f96f/8464a3626d2b4f76a6eb0453fce7ce6e [2020-07-19 21:44:40,293 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-19 21:44:40,295 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-19 21:44:40,296 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-19 21:44:40,296 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-19 21:44:40,300 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-19 21:44:40,301 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.07 09:44:40" (1/1) ... [2020-07-19 21:44:40,304 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@683036d5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:44:40, skipping insertion in model container [2020-07-19 21:44:40,304 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.07 09:44:40" (1/1) ... [2020-07-19 21:44:40,312 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-19 21:44:40,331 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-19 21:44:40,510 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-19 21:44:40,522 INFO L203 MainTranslator]: Completed pre-run [2020-07-19 21:44:40,544 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-19 21:44:40,562 INFO L208 MainTranslator]: Completed translation [2020-07-19 21:44:40,562 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:44:40 WrapperNode [2020-07-19 21:44:40,563 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-19 21:44:40,563 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-19 21:44:40,564 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-19 21:44:40,564 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-19 21:44:40,715 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:44:40" (1/1) ... [2020-07-19 21:44:40,716 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:44:40" (1/1) ... [2020-07-19 21:44:40,725 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:44:40" (1/1) ... [2020-07-19 21:44:40,725 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:44:40" (1/1) ... [2020-07-19 21:44:40,748 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:44:40" (1/1) ... [2020-07-19 21:44:40,755 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:44:40" (1/1) ... [2020-07-19 21:44:40,763 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:44:40" (1/1) ... [2020-07-19 21:44:40,765 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-19 21:44:40,766 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-19 21:44:40,766 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-19 21:44:40,766 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-19 21:44:40,767 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:44:40" (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 [2020-07-19 21:44:40,821 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-19 21:44:40,822 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-19 21:44:40,822 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-07-19 21:44:40,822 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-07-19 21:44:40,822 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-19 21:44:40,822 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-19 21:44:40,823 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-07-19 21:44:40,823 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-07-19 21:44:40,823 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-07-19 21:44:40,823 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-07-19 21:44:40,823 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-07-19 21:44:40,823 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-19 21:44:40,824 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-07-19 21:44:40,824 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-07-19 21:44:40,824 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-07-19 21:44:40,824 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-19 21:44:40,824 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-19 21:44:40,825 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-07-19 21:44:41,080 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-19 21:44:41,081 INFO L295 CfgBuilder]: Removed 3 assume(true) statements. [2020-07-19 21:44:41,085 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.07 09:44:41 BoogieIcfgContainer [2020-07-19 21:44:41,085 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-19 21:44:41,086 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-19 21:44:41,086 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-19 21:44:41,090 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-19 21:44:41,090 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.07 09:44:40" (1/3) ... [2020-07-19 21:44:41,091 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@249fb5da and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.07 09:44:41, skipping insertion in model container [2020-07-19 21:44:41,091 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:44:40" (2/3) ... [2020-07-19 21:44:41,092 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@249fb5da and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.07 09:44:41, skipping insertion in model container [2020-07-19 21:44:41,092 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.07 09:44:41" (3/3) ... [2020-07-19 21:44:41,093 INFO L109 eAbstractionObserver]: Analyzing ICFG condmf.c [2020-07-19 21:44:41,107 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-07-19 21:44:41,115 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-19 21:44:41,137 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-19 21:44:41,187 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-19 21:44:41,187 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-19 21:44:41,187 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-07-19 21:44:41,187 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-19 21:44:41,188 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-19 21:44:41,188 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-19 21:44:41,188 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-19 21:44:41,188 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-19 21:44:41,209 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states. [2020-07-19 21:44:41,216 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-07-19 21:44:41,217 INFO L414 BasicCegarLoop]: Found error trace [2020-07-19 21:44:41,218 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] [2020-07-19 21:44:41,219 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-19 21:44:41,230 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-19 21:44:41,231 INFO L82 PathProgramCache]: Analyzing trace with hash -1524373234, now seen corresponding path program 1 times [2020-07-19 21:44:41,242 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_NO_AM [2020-07-19 21:44:41,243 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [518025660] [2020-07-19 21:44:41,243 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@1dee12fd [2020-07-19 21:44:41,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 21:44:41,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 21:44:41,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 21:44:41,439 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-19 21:44:41,440 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [518025660] [2020-07-19 21:44:41,440 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-19 21:44:41,441 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-19 21:44:41,442 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [180798627] [2020-07-19 21:44:41,447 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-19 21:44:41,448 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_NO_AM [2020-07-19 21:44:41,465 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-19 21:44:41,466 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-19 21:44:41,468 INFO L87 Difference]: Start difference. First operand 35 states. Second operand 3 states. [2020-07-19 21:44:41,590 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-19 21:44:41,590 INFO L93 Difference]: Finished difference Result 60 states and 77 transitions. [2020-07-19 21:44:41,591 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-19 21:44:41,592 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 22 [2020-07-19 21:44:41,593 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-19 21:44:41,602 INFO L225 Difference]: With dead ends: 60 [2020-07-19 21:44:41,602 INFO L226 Difference]: Without dead ends: 30 [2020-07-19 21:44:41,606 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 [2020-07-19 21:44:41,624 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2020-07-19 21:44:41,642 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 30. [2020-07-19 21:44:41,643 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2020-07-19 21:44:41,645 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 33 transitions. [2020-07-19 21:44:41,646 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 33 transitions. Word has length 22 [2020-07-19 21:44:41,647 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-19 21:44:41,647 INFO L479 AbstractCegarLoop]: Abstraction has 30 states and 33 transitions. [2020-07-19 21:44:41,647 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-19 21:44:41,648 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 33 transitions. [2020-07-19 21:44:41,649 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-07-19 21:44:41,649 INFO L414 BasicCegarLoop]: Found error trace [2020-07-19 21:44:41,649 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] [2020-07-19 21:44:41,649 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-07-19 21:44:41,650 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-19 21:44:41,650 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-19 21:44:41,650 INFO L82 PathProgramCache]: Analyzing trace with hash -2111179248, now seen corresponding path program 1 times [2020-07-19 21:44:41,651 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_NO_AM [2020-07-19 21:44:41,651 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1163965273] [2020-07-19 21:44:41,652 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@1dee12fd [2020-07-19 21:44:41,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 21:44:41,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 21:44:41,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 21:44:41,791 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-19 21:44:41,795 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1163965273] [2020-07-19 21:44:41,795 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-19 21:44:41,796 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-07-19 21:44:41,796 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [533498244] [2020-07-19 21:44:41,802 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-07-19 21:44:41,802 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_NO_AM [2020-07-19 21:44:41,803 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-07-19 21:44:41,803 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-07-19 21:44:41,803 INFO L87 Difference]: Start difference. First operand 30 states and 33 transitions. Second operand 5 states. [2020-07-19 21:44:41,944 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-19 21:44:41,944 INFO L93 Difference]: Finished difference Result 54 states and 63 transitions. [2020-07-19 21:44:41,945 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-07-19 21:44:41,945 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 22 [2020-07-19 21:44:41,945 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-19 21:44:41,948 INFO L225 Difference]: With dead ends: 54 [2020-07-19 21:44:41,948 INFO L226 Difference]: Without dead ends: 39 [2020-07-19 21:44:41,950 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 [2020-07-19 21:44:41,950 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2020-07-19 21:44:41,962 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 32. [2020-07-19 21:44:41,962 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2020-07-19 21:44:41,963 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 35 transitions. [2020-07-19 21:44:41,963 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 35 transitions. Word has length 22 [2020-07-19 21:44:41,964 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-19 21:44:41,964 INFO L479 AbstractCegarLoop]: Abstraction has 32 states and 35 transitions. [2020-07-19 21:44:41,964 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-07-19 21:44:41,964 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 35 transitions. [2020-07-19 21:44:41,965 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-07-19 21:44:41,965 INFO L414 BasicCegarLoop]: Found error trace [2020-07-19 21:44:41,966 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] [2020-07-19 21:44:41,966 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-07-19 21:44:41,966 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-19 21:44:41,967 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-19 21:44:41,967 INFO L82 PathProgramCache]: Analyzing trace with hash 373909448, now seen corresponding path program 1 times [2020-07-19 21:44:41,967 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_NO_AM [2020-07-19 21:44:41,968 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1171318858] [2020-07-19 21:44:41,968 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@1dee12fd [2020-07-19 21:44:42,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-19 21:44:42,056 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-07-19 21:44:42,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-19 21:44:42,113 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-07-19 21:44:42,147 INFO L174 FreeRefinementEngine]: Strategy CAMEL_NO_AM found a feasible trace [2020-07-19 21:44:42,147 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-07-19 21:44:42,147 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-07-19 21:44:42,184 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.07 09:44:42 BoogieIcfgContainer [2020-07-19 21:44:42,184 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-19 21:44:42,188 INFO L168 Benchmark]: Toolchain (without parser) took 1891.87 ms. Allocated memory was 137.4 MB in the beginning and 205.5 MB in the end (delta: 68.2 MB). Free memory was 100.7 MB in the beginning and 104.3 MB in the end (delta: -3.6 MB). Peak memory consumption was 64.6 MB. Max. memory is 7.1 GB. [2020-07-19 21:44:42,189 INFO L168 Benchmark]: CDTParser took 0.18 ms. Allocated memory is still 137.4 MB. Free memory was 119.2 MB in the beginning and 119.0 MB in the end (delta: 210.1 kB). Peak memory consumption was 210.1 kB. Max. memory is 7.1 GB. [2020-07-19 21:44:42,190 INFO L168 Benchmark]: CACSL2BoogieTranslator took 267.01 ms. Allocated memory is still 137.4 MB. Free memory was 100.3 MB in the beginning and 90.1 MB in the end (delta: 10.2 MB). Peak memory consumption was 10.2 MB. Max. memory is 7.1 GB. [2020-07-19 21:44:42,191 INFO L168 Benchmark]: Boogie Preprocessor took 201.96 ms. Allocated memory was 137.4 MB in the beginning and 205.5 MB in the end (delta: 68.2 MB). Free memory was 90.1 MB in the beginning and 182.3 MB in the end (delta: -92.3 MB). Peak memory consumption was 13.5 MB. Max. memory is 7.1 GB. [2020-07-19 21:44:42,192 INFO L168 Benchmark]: RCFGBuilder took 319.55 ms. Allocated memory is still 205.5 MB. Free memory was 182.3 MB in the beginning and 165.9 MB in the end (delta: 16.5 MB). Peak memory consumption was 16.5 MB. Max. memory is 7.1 GB. [2020-07-19 21:44:42,193 INFO L168 Benchmark]: TraceAbstraction took 1098.10 ms. Allocated memory is still 205.5 MB. Free memory was 165.2 MB in the beginning and 104.3 MB in the end (delta: 60.9 MB). Peak memory consumption was 60.9 MB. Max. memory is 7.1 GB. [2020-07-19 21:44:42,200 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18 ms. Allocated memory is still 137.4 MB. Free memory was 119.2 MB in the beginning and 119.0 MB in the end (delta: 210.1 kB). Peak memory consumption was 210.1 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 267.01 ms. Allocated memory is still 137.4 MB. Free memory was 100.3 MB in the beginning and 90.1 MB in the end (delta: 10.2 MB). Peak memory consumption was 10.2 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 201.96 ms. Allocated memory was 137.4 MB in the beginning and 205.5 MB in the end (delta: 68.2 MB). Free memory was 90.1 MB in the beginning and 182.3 MB in the end (delta: -92.3 MB). Peak memory consumption was 13.5 MB. Max. memory is 7.1 GB. * RCFGBuilder took 319.55 ms. Allocated memory is still 205.5 MB. Free memory was 182.3 MB in the beginning and 165.9 MB in the end (delta: 16.5 MB). Peak memory consumption was 16.5 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1098.10 ms. Allocated memory is still 205.5 MB. Free memory was 165.2 MB in the beginning and 104.3 MB in the end (delta: 60.9 MB). Peak memory consumption was 60.9 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 [L30] a[i] = 0 VAL [\old(N)=0, a={-1:0}, i=0, malloc(sizeof(int)*N)={-1:0}, N=1] [L28] i++ VAL [\old(N)=0, a={-1:0}, i=1, malloc(sizeof(int)*N)={-1:0}, N=1] [L28] COND FALSE !(i < N) VAL [\old(N)=0, a={-1:0}, i=1, malloc(sizeof(int)*N)={-1:0}, N=1] [L33] i = 0 VAL [\old(N)=0, a={-1:0}, i=0, malloc(sizeof(int)*N)={-1:0}, N=1] [L33] COND TRUE i < N VAL [\old(N)=0, a={-1:0}, i=0, malloc(sizeof(int)*N)={-1:0}, N=1] [L35] COND TRUE N%2 == 1 [L37] EXPR a[i] [L37] a[i] = a[i] + 2 [L33] i++ VAL [\old(N)=0, a={-1:0}, i=1, malloc(sizeof(int)*N)={-1:0}, N=1] [L33] COND FALSE !(i < N) VAL [\old(N)=0, a={-1:0}, i=1, malloc(sizeof(int)*N)={-1:0}, N=1] [L45] i = 0 VAL [\old(N)=0, a={-1:0}, i=0, malloc(sizeof(int)*N)={-1:0}, N=1] [L45] COND TRUE i < N [L47] EXPR a[i] VAL [\old(N)=0, a={-1:0}, a[i]=2, i=0, malloc(sizeof(int)*N)={-1:0}, N=1] [L47] CALL __VERIFIER_assert(a[i] % 2 == N % 2) VAL [\old(cond)=0, \old(N)=0, N=1] [L13] COND TRUE !(cond) VAL [\old(cond)=0, \old(N)=0, cond=0, N=1] [L13] __VERIFIER_error() VAL [\old(cond)=0, \old(N)=0, cond=0, N=1] - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 35 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 0.9s, OverallIterations: 3, TraceHistogramMax: 1, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 57 SDtfs, 52 SDslu, 11 SDs, 0 SdLazy, 84 SolverSat, 15 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 17 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=35occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 2 MinimizatonAttempts, 7 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 71 NumberOfCodeBlocks, 71 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 42 ConstructedInterpolants, 0 QuantifiedInterpolants, 1596 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 2 InterpolantComputations, 2 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...