/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.assert.codeblocks.term.scoring.heuristic BIGGEST_EQUIVALENCE_CLASS --traceabstraction.assert.codeblocks.term.scoring.heuristic.partitioning.strategy FIXED_NUM_PARTITIONS --traceabstraction.assert.codeblocks.term.scoring.heuristic.number.of.partitions 4 --traceabstraction.trace.refinement.strategy CAMEL_SMT_AM -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/array-fpi/ms2f.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-79ed534 [2020-07-20 06:04:58,774 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-20 06:04:58,778 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-20 06:04:58,799 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-20 06:04:58,800 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-20 06:04:58,802 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-20 06:04:58,804 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-20 06:04:58,816 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-20 06:04:58,821 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-20 06:04:58,824 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-20 06:04:58,826 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-20 06:04:58,828 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-20 06:04:58,828 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-20 06:04:58,830 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-20 06:04:58,832 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-20 06:04:58,834 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-20 06:04:58,835 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-20 06:04:58,836 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-20 06:04:58,837 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-20 06:04:58,842 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-20 06:04:58,848 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-20 06:04:58,851 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-20 06:04:58,852 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-20 06:04:58,853 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-20 06:04:58,855 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-07-20 06:04:58,865 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-20 06:04:58,866 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-20 06:04:58,867 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-20 06:04:58,869 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 [2020-07-20 06:04:58,909 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-20 06:04:58,910 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-20 06:04:58,911 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-20 06:04:58,911 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-20 06:04:58,912 INFO L138 SettingsManager]: * Use SBE=true [2020-07-20 06:04:58,912 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-20 06:04:58,912 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-20 06:04:58,912 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-20 06:04:58,912 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-20 06:04:58,913 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-20 06:04:58,913 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-20 06:04:58,913 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-20 06:04:58,913 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-20 06:04:58,913 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-20 06:04:58,913 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-20 06:04:58,914 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-20 06:04:58,914 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-20 06:04:58,914 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-20 06:04:58,915 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-20 06:04:58,915 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-20 06:04:58,915 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-20 06:04:58,915 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-20 06:04:58,916 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-20 06:04:58,916 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-07-20 06:04:58,916 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-07-20 06:04:58,916 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-07-20 06:04:58,916 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 06:04:58,917 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-20 06:04:58,917 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-07-20 06:04:58,917 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks Term Scoring Heuristic -> BIGGEST_EQUIVALENCE_CLASS Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks Term Scoring Heuristic Partitioning Strategy -> FIXED_NUM_PARTITIONS Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks Term Scoring Heuristic number of partitions -> 4 Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> CAMEL_SMT_AM [2020-07-20 06:04:59,217 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-20 06:04:59,240 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-20 06:04:59,245 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-20 06:04:59,247 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-20 06:04:59,247 INFO L275 PluginConnector]: CDTParser initialized [2020-07-20 06:04:59,249 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-fpi/ms2f.c [2020-07-20 06:04:59,331 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/29a96879d/45fbe46316054eb584b835be15ec734f/FLAG27c6e03c6 [2020-07-20 06:04:59,832 INFO L306 CDTParser]: Found 1 translation units. [2020-07-20 06:04:59,833 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/array-fpi/ms2f.c [2020-07-20 06:04:59,841 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/29a96879d/45fbe46316054eb584b835be15ec734f/FLAG27c6e03c6 [2020-07-20 06:05:00,201 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/29a96879d/45fbe46316054eb584b835be15ec734f [2020-07-20 06:05:00,213 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-20 06:05:00,216 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-20 06:05:00,217 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-20 06:05:00,217 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-20 06:05:00,221 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-20 06:05:00,222 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.07 06:05:00" (1/1) ... [2020-07-20 06:05:00,226 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7d640b64 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 06:05:00, skipping insertion in model container [2020-07-20 06:05:00,226 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.07 06:05:00" (1/1) ... [2020-07-20 06:05:00,234 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-20 06:05:00,254 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-20 06:05:00,442 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-20 06:05:00,452 INFO L203 MainTranslator]: Completed pre-run [2020-07-20 06:05:00,474 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-20 06:05:00,588 INFO L208 MainTranslator]: Completed translation [2020-07-20 06:05:00,588 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 06:05:00 WrapperNode [2020-07-20 06:05:00,589 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-20 06:05:00,589 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-20 06:05:00,590 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-20 06:05:00,590 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-20 06:05:00,601 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 06:05:00" (1/1) ... [2020-07-20 06:05:00,601 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 06:05:00" (1/1) ... [2020-07-20 06:05:00,609 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 06:05:00" (1/1) ... [2020-07-20 06:05:00,610 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 06:05:00" (1/1) ... [2020-07-20 06:05:00,617 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 06:05:00" (1/1) ... [2020-07-20 06:05:00,622 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 06:05:00" (1/1) ... [2020-07-20 06:05:00,624 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 06:05:00" (1/1) ... [2020-07-20 06:05:00,626 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-20 06:05:00,627 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-20 06:05:00,627 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-20 06:05:00,627 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-20 06:05:00,628 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 06:05:00" (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 [2020-07-20 06:05:00,708 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-20 06:05:00,709 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-20 06:05:00,709 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-07-20 06:05:00,709 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-07-20 06:05:00,709 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-20 06:05:00,709 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-20 06:05:00,711 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-07-20 06:05:00,711 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-07-20 06:05:00,711 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-07-20 06:05:00,712 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-07-20 06:05:00,712 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-07-20 06:05:00,713 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-20 06:05:00,713 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-07-20 06:05:00,713 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-07-20 06:05:00,713 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-07-20 06:05:00,714 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-07-20 06:05:00,715 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-07-20 06:05:00,715 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-20 06:05:00,715 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-20 06:05:01,058 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-20 06:05:01,058 INFO L295 CfgBuilder]: Removed 2 assume(true) statements. [2020-07-20 06:05:01,062 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.07 06:05:01 BoogieIcfgContainer [2020-07-20 06:05:01,063 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-20 06:05:01,064 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-20 06:05:01,064 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-20 06:05:01,067 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-20 06:05:01,067 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.07 06:05:00" (1/3) ... [2020-07-20 06:05:01,068 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7562a84c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.07 06:05:01, skipping insertion in model container [2020-07-20 06:05:01,068 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 06:05:00" (2/3) ... [2020-07-20 06:05:01,069 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7562a84c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.07 06:05:01, skipping insertion in model container [2020-07-20 06:05:01,069 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.07 06:05:01" (3/3) ... [2020-07-20 06:05:01,071 INFO L109 eAbstractionObserver]: Analyzing ICFG ms2f.c [2020-07-20 06:05:01,081 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-07-20 06:05:01,087 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-20 06:05:01,100 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-20 06:05:01,128 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-20 06:05:01,128 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-20 06:05:01,128 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-07-20 06:05:01,128 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-20 06:05:01,128 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-20 06:05:01,128 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-20 06:05:01,128 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-20 06:05:01,129 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-20 06:05:01,147 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states. [2020-07-20 06:05:01,152 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-07-20 06:05:01,152 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 06:05:01,153 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] [2020-07-20 06:05:01,154 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 06:05:01,158 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 06:05:01,159 INFO L82 PathProgramCache]: Analyzing trace with hash -432131487, now seen corresponding path program 1 times [2020-07-20 06:05:01,168 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 06:05:01,168 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [894401128] [2020-07-20 06:05:01,169 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@576b9c37 [2020-07-20 06:05:01,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 06:05:01,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 06:05:01,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 06:05:01,377 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 06:05:01,378 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [894401128] [2020-07-20 06:05:01,379 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 06:05:01,379 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-20 06:05:01,380 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1558712285] [2020-07-20 06:05:01,386 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-20 06:05:01,387 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 06:05:01,398 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-20 06:05:01,399 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-20 06:05:01,401 INFO L87 Difference]: Start difference. First operand 32 states. Second operand 3 states. [2020-07-20 06:05:01,525 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 06:05:01,525 INFO L93 Difference]: Finished difference Result 54 states and 67 transitions. [2020-07-20 06:05:01,526 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-20 06:05:01,528 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 21 [2020-07-20 06:05:01,528 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 06:05:01,536 INFO L225 Difference]: With dead ends: 54 [2020-07-20 06:05:01,537 INFO L226 Difference]: Without dead ends: 25 [2020-07-20 06:05:01,541 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 [2020-07-20 06:05:01,556 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2020-07-20 06:05:01,573 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 25. [2020-07-20 06:05:01,574 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2020-07-20 06:05:01,575 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 27 transitions. [2020-07-20 06:05:01,577 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 27 transitions. Word has length 21 [2020-07-20 06:05:01,577 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 06:05:01,577 INFO L479 AbstractCegarLoop]: Abstraction has 25 states and 27 transitions. [2020-07-20 06:05:01,577 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-20 06:05:01,578 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 27 transitions. [2020-07-20 06:05:01,578 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-07-20 06:05:01,579 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 06:05:01,579 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] [2020-07-20 06:05:01,579 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-07-20 06:05:01,580 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 06:05:01,580 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 06:05:01,580 INFO L82 PathProgramCache]: Analyzing trace with hash -173966049, now seen corresponding path program 1 times [2020-07-20 06:05:01,581 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 06:05:01,581 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [231967398] [2020-07-20 06:05:01,581 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@576b9c37 [2020-07-20 06:05:01,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 06:05:01,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 06:05:01,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 06:05:01,721 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 06:05:01,721 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [231967398] [2020-07-20 06:05:01,722 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 06:05:01,722 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-07-20 06:05:01,722 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1193687505] [2020-07-20 06:05:01,724 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-07-20 06:05:01,725 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 06:05:01,725 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-07-20 06:05:01,726 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-07-20 06:05:01,726 INFO L87 Difference]: Start difference. First operand 25 states and 27 transitions. Second operand 5 states. [2020-07-20 06:05:01,845 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 06:05:01,845 INFO L93 Difference]: Finished difference Result 40 states and 46 transitions. [2020-07-20 06:05:01,846 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-07-20 06:05:01,846 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 21 [2020-07-20 06:05:01,847 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 06:05:01,847 INFO L225 Difference]: With dead ends: 40 [2020-07-20 06:05:01,848 INFO L226 Difference]: Without dead ends: 30 [2020-07-20 06:05:01,849 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 [2020-07-20 06:05:01,850 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2020-07-20 06:05:01,856 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 28. [2020-07-20 06:05:01,857 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2020-07-20 06:05:01,858 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 30 transitions. [2020-07-20 06:05:01,858 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 30 transitions. Word has length 21 [2020-07-20 06:05:01,858 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 06:05:01,859 INFO L479 AbstractCegarLoop]: Abstraction has 28 states and 30 transitions. [2020-07-20 06:05:01,859 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-07-20 06:05:01,859 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 30 transitions. [2020-07-20 06:05:01,860 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-07-20 06:05:01,860 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 06:05:01,860 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] [2020-07-20 06:05:01,860 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-07-20 06:05:01,861 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 06:05:01,861 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 06:05:01,861 INFO L82 PathProgramCache]: Analyzing trace with hash -445719797, now seen corresponding path program 1 times [2020-07-20 06:05:01,862 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 06:05:01,862 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [80317654] [2020-07-20 06:05:01,862 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@576b9c37 [2020-07-20 06:05:01,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-20 06:05:01,902 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-07-20 06:05:01,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-20 06:05:01,934 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-07-20 06:05:01,968 INFO L174 FreeRefinementEngine]: Strategy CAMEL_SMT_AM found a feasible trace [2020-07-20 06:05:01,968 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-07-20 06:05:01,969 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-07-20 06:05:02,048 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.07 06:05:02 BoogieIcfgContainer [2020-07-20 06:05:02,049 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-20 06:05:02,056 INFO L168 Benchmark]: Toolchain (without parser) took 1837.92 ms. Allocated memory was 137.9 MB in the beginning and 202.9 MB in the end (delta: 65.0 MB). Free memory was 102.8 MB in the beginning and 108.1 MB in the end (delta: -5.3 MB). Peak memory consumption was 59.7 MB. Max. memory is 7.1 GB. [2020-07-20 06:05:02,063 INFO L168 Benchmark]: CDTParser took 0.25 ms. Allocated memory is still 137.9 MB. Free memory was 121.0 MB in the beginning and 120.8 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-07-20 06:05:02,067 INFO L168 Benchmark]: CACSL2BoogieTranslator took 371.95 ms. Allocated memory was 137.9 MB in the beginning and 202.9 MB in the end (delta: 65.0 MB). Free memory was 102.4 MB in the beginning and 182.0 MB in the end (delta: -79.6 MB). Peak memory consumption was 23.4 MB. Max. memory is 7.1 GB. [2020-07-20 06:05:02,067 INFO L168 Benchmark]: Boogie Preprocessor took 36.97 ms. Allocated memory is still 202.9 MB. Free memory was 182.0 MB in the beginning and 179.5 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.5 MB. Max. memory is 7.1 GB. [2020-07-20 06:05:02,068 INFO L168 Benchmark]: RCFGBuilder took 436.19 ms. Allocated memory is still 202.9 MB. Free memory was 179.5 MB in the beginning and 163.4 MB in the end (delta: 16.1 MB). Peak memory consumption was 16.1 MB. Max. memory is 7.1 GB. [2020-07-20 06:05:02,071 INFO L168 Benchmark]: TraceAbstraction took 984.46 ms. Allocated memory is still 202.9 MB. Free memory was 162.7 MB in the beginning and 108.1 MB in the end (delta: 54.7 MB). Peak memory consumption was 54.7 MB. Max. memory is 7.1 GB. [2020-07-20 06:05:02,079 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25 ms. Allocated memory is still 137.9 MB. Free memory was 121.0 MB in the beginning and 120.8 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 371.95 ms. Allocated memory was 137.9 MB in the beginning and 202.9 MB in the end (delta: 65.0 MB). Free memory was 102.4 MB in the beginning and 182.0 MB in the end (delta: -79.6 MB). Peak memory consumption was 23.4 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 36.97 ms. Allocated memory is still 202.9 MB. Free memory was 182.0 MB in the beginning and 179.5 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.5 MB. Max. memory is 7.1 GB. * RCFGBuilder took 436.19 ms. Allocated memory is still 202.9 MB. Free memory was 179.5 MB in the beginning and 163.4 MB in the end (delta: 16.1 MB). Peak memory consumption was 16.1 MB. Max. memory is 7.1 GB. * TraceAbstraction took 984.46 ms. Allocated memory is still 202.9 MB. Free memory was 162.7 MB in the beginning and 108.1 MB in the end (delta: 54.7 MB). Peak memory consumption was 54.7 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 sum[1]; [L27] int *a = malloc(sizeof(int)*N); [L29] i=0 VAL [\old(N)=0, a={-1:0}, i=0, malloc(sizeof(int)*N)={-1:0}, N=1, sum={2:0}] [L29] COND TRUE i N) 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, 32 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 0.8s, OverallIterations: 3, TraceHistogramMax: 1, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 51 SDtfs, 39 SDslu, 11 SDs, 0 SdLazy, 64 SolverSat, 12 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, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=32occurred 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, 2 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 68 NumberOfCodeBlocks, 68 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 40 ConstructedInterpolants, 0 QuantifiedInterpolants, 1480 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...