/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/sina5f.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-79ed534 [2020-07-20 06:06:00,569 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-20 06:06:00,572 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-20 06:06:00,584 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-20 06:06:00,585 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-20 06:06:00,586 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-20 06:06:00,587 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-20 06:06:00,589 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-20 06:06:00,591 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-20 06:06:00,592 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-20 06:06:00,593 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-20 06:06:00,594 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-20 06:06:00,595 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-20 06:06:00,596 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-20 06:06:00,597 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-20 06:06:00,598 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-20 06:06:00,599 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-20 06:06:00,600 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-20 06:06:00,602 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-20 06:06:00,604 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-20 06:06:00,606 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-20 06:06:00,607 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-20 06:06:00,608 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-20 06:06:00,609 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-20 06:06:00,611 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-07-20 06:06:00,630 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-20 06:06:00,632 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-20 06:06:00,633 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-20 06:06:00,634 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 06:06:00,661 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-20 06:06:00,661 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-20 06:06:00,664 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-20 06:06:00,664 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-20 06:06:00,665 INFO L138 SettingsManager]: * Use SBE=true [2020-07-20 06:06:00,665 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-20 06:06:00,665 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-20 06:06:00,665 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-20 06:06:00,666 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-20 06:06:00,666 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-20 06:06:00,667 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-20 06:06:00,667 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-20 06:06:00,668 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-20 06:06:00,668 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-20 06:06:00,668 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-20 06:06:00,668 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-20 06:06:00,669 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-20 06:06:00,669 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-20 06:06:00,669 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-20 06:06:00,669 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-20 06:06:00,669 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-20 06:06:00,670 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-20 06:06:00,670 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-20 06:06:00,670 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-07-20 06:06:00,670 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-07-20 06:06:00,670 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-07-20 06:06:00,671 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 06:06:00,671 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-20 06:06:00,671 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-07-20 06:06:00,671 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 06:06:00,956 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-20 06:06:00,970 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-20 06:06:00,973 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-20 06:06:00,975 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-20 06:06:00,975 INFO L275 PluginConnector]: CDTParser initialized [2020-07-20 06:06:00,976 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-fpi/sina5f.c [2020-07-20 06:06:01,064 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/37773b5e9/565030cd0ebc40e4bb7a1db69e9f0b02/FLAG7eac6fd14 [2020-07-20 06:06:01,606 INFO L306 CDTParser]: Found 1 translation units. [2020-07-20 06:06:01,607 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/array-fpi/sina5f.c [2020-07-20 06:06:01,616 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/37773b5e9/565030cd0ebc40e4bb7a1db69e9f0b02/FLAG7eac6fd14 [2020-07-20 06:06:01,942 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/37773b5e9/565030cd0ebc40e4bb7a1db69e9f0b02 [2020-07-20 06:06:01,952 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-20 06:06:01,955 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-20 06:06:01,957 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-20 06:06:01,957 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-20 06:06:01,963 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-20 06:06:01,964 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.07 06:06:01" (1/1) ... [2020-07-20 06:06:01,967 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5e419422 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 06:06:01, skipping insertion in model container [2020-07-20 06:06:01,967 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.07 06:06:01" (1/1) ... [2020-07-20 06:06:01,977 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-20 06:06:01,995 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-20 06:06:02,224 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-20 06:06:02,233 INFO L203 MainTranslator]: Completed pre-run [2020-07-20 06:06:02,258 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-20 06:06:02,274 INFO L208 MainTranslator]: Completed translation [2020-07-20 06:06:02,275 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 06:06:02 WrapperNode [2020-07-20 06:06:02,275 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-20 06:06:02,276 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-20 06:06:02,276 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-20 06:06:02,276 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-20 06:06:02,369 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 06:06:02" (1/1) ... [2020-07-20 06:06:02,369 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 06:06:02" (1/1) ... [2020-07-20 06:06:02,378 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 06:06:02" (1/1) ... [2020-07-20 06:06:02,379 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 06:06:02" (1/1) ... [2020-07-20 06:06:02,394 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 06:06:02" (1/1) ... [2020-07-20 06:06:02,401 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 06:06:02" (1/1) ... [2020-07-20 06:06:02,405 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 06:06:02" (1/1) ... [2020-07-20 06:06:02,408 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-20 06:06:02,409 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-20 06:06:02,409 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-20 06:06:02,409 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-20 06:06:02,410 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 06:06:02" (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 06:06:02,473 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-20 06:06:02,473 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-20 06:06:02,474 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-07-20 06:06:02,474 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-07-20 06:06:02,474 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-20 06:06:02,474 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-20 06:06:02,474 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-07-20 06:06:02,475 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-07-20 06:06:02,475 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-07-20 06:06:02,475 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-07-20 06:06:02,475 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-07-20 06:06:02,475 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-20 06:06:02,475 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-07-20 06:06:02,475 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-07-20 06:06:02,476 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-07-20 06:06:02,476 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-07-20 06:06:02,476 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-07-20 06:06:02,476 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-20 06:06:02,476 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-20 06:06:02,794 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-20 06:06:02,794 INFO L295 CfgBuilder]: Removed 6 assume(true) statements. [2020-07-20 06:06:02,800 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.07 06:06:02 BoogieIcfgContainer [2020-07-20 06:06:02,800 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-20 06:06:02,802 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-20 06:06:02,802 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-20 06:06:02,805 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-20 06:06:02,806 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.07 06:06:01" (1/3) ... [2020-07-20 06:06:02,806 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@16ea309 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.07 06:06:02, skipping insertion in model container [2020-07-20 06:06:02,807 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 06:06:02" (2/3) ... [2020-07-20 06:06:02,807 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@16ea309 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.07 06:06:02, skipping insertion in model container [2020-07-20 06:06:02,807 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.07 06:06:02" (3/3) ... [2020-07-20 06:06:02,809 INFO L109 eAbstractionObserver]: Analyzing ICFG sina5f.c [2020-07-20 06:06:02,822 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-07-20 06:06:02,831 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-20 06:06:02,848 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-20 06:06:02,876 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-20 06:06:02,876 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-20 06:06:02,876 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-07-20 06:06:02,877 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-20 06:06:02,877 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-20 06:06:02,877 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-20 06:06:02,877 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-20 06:06:02,877 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-20 06:06:02,907 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states. [2020-07-20 06:06:02,915 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-07-20 06:06:02,915 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 06:06:02,916 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 06:06:02,916 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 06:06:02,924 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 06:06:02,925 INFO L82 PathProgramCache]: Analyzing trace with hash 1994596369, now seen corresponding path program 1 times [2020-07-20 06:06:02,935 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 06:06:02,936 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [905014892] [2020-07-20 06:06:02,936 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@71cee326 [2020-07-20 06:06:03,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 06:06:03,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 06:06:03,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 06:06:03,158 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 06:06:03,159 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [905014892] [2020-07-20 06:06:03,160 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 06:06:03,160 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-20 06:06:03,161 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [142765217] [2020-07-20 06:06:03,167 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-20 06:06:03,168 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 06:06:03,182 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-20 06:06:03,184 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-20 06:06:03,186 INFO L87 Difference]: Start difference. First operand 43 states. Second operand 3 states. [2020-07-20 06:06:03,341 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 06:06:03,341 INFO L93 Difference]: Finished difference Result 76 states and 103 transitions. [2020-07-20 06:06:03,342 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-20 06:06:03,344 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 28 [2020-07-20 06:06:03,344 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 06:06:03,354 INFO L225 Difference]: With dead ends: 76 [2020-07-20 06:06:03,354 INFO L226 Difference]: Without dead ends: 38 [2020-07-20 06:06:03,358 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 06:06:03,378 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2020-07-20 06:06:03,401 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 38. [2020-07-20 06:06:03,403 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2020-07-20 06:06:03,404 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 43 transitions. [2020-07-20 06:06:03,406 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 43 transitions. Word has length 28 [2020-07-20 06:06:03,407 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 06:06:03,407 INFO L479 AbstractCegarLoop]: Abstraction has 38 states and 43 transitions. [2020-07-20 06:06:03,407 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-20 06:06:03,408 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 43 transitions. [2020-07-20 06:06:03,409 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-07-20 06:06:03,409 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 06:06:03,410 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 06:06:03,410 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-07-20 06:06:03,410 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 06:06:03,411 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 06:06:03,411 INFO L82 PathProgramCache]: Analyzing trace with hash 1530390023, now seen corresponding path program 1 times [2020-07-20 06:06:03,411 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 06:06:03,412 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2042006302] [2020-07-20 06:06:03,412 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@71cee326 [2020-07-20 06:06:03,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 06:06:03,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 06:06:03,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 06:06:03,576 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 06:06:03,576 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2042006302] [2020-07-20 06:06:03,577 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 06:06:03,577 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-07-20 06:06:03,577 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [139083415] [2020-07-20 06:06:03,579 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-07-20 06:06:03,580 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 06:06:03,580 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-07-20 06:06:03,580 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-07-20 06:06:03,581 INFO L87 Difference]: Start difference. First operand 38 states and 43 transitions. Second operand 5 states. [2020-07-20 06:06:03,800 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 06:06:03,800 INFO L93 Difference]: Finished difference Result 75 states and 90 transitions. [2020-07-20 06:06:03,801 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-07-20 06:06:03,801 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 28 [2020-07-20 06:06:03,802 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 06:06:03,805 INFO L225 Difference]: With dead ends: 75 [2020-07-20 06:06:03,805 INFO L226 Difference]: Without dead ends: 52 [2020-07-20 06:06:03,807 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 06:06:03,807 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2020-07-20 06:06:03,821 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 43. [2020-07-20 06:06:03,822 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2020-07-20 06:06:03,823 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 48 transitions. [2020-07-20 06:06:03,823 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 48 transitions. Word has length 28 [2020-07-20 06:06:03,824 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 06:06:03,824 INFO L479 AbstractCegarLoop]: Abstraction has 43 states and 48 transitions. [2020-07-20 06:06:03,824 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-07-20 06:06:03,825 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 48 transitions. [2020-07-20 06:06:03,826 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2020-07-20 06:06:03,826 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 06:06:03,826 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 06:06:03,826 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-07-20 06:06:03,827 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 06:06:03,827 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 06:06:03,827 INFO L82 PathProgramCache]: Analyzing trace with hash 1357692925, now seen corresponding path program 1 times [2020-07-20 06:06:03,828 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 06:06:03,828 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [135571595] [2020-07-20 06:06:03,828 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@71cee326 [2020-07-20 06:06:03,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-20 06:06:03,921 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-07-20 06:06:03,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-20 06:06:03,983 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-07-20 06:06:04,017 INFO L174 FreeRefinementEngine]: Strategy CAMEL_SMT_AM found a feasible trace [2020-07-20 06:06:04,018 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-07-20 06:06:04,032 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-07-20 06:06:04,086 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.07 06:06:04 BoogieIcfgContainer [2020-07-20 06:06:04,087 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-20 06:06:04,090 INFO L168 Benchmark]: Toolchain (without parser) took 2134.62 ms. Allocated memory was 138.4 MB in the beginning and 235.4 MB in the end (delta: 97.0 MB). Free memory was 103.0 MB in the beginning and 203.0 MB in the end (delta: -99.9 MB). Peak memory consumption was 85.5 MB. Max. memory is 7.1 GB. [2020-07-20 06:06:04,095 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 138.4 MB. Free memory is still 121.1 MB. There was no memory consumed. Max. memory is 7.1 GB. [2020-07-20 06:06:04,097 INFO L168 Benchmark]: CACSL2BoogieTranslator took 318.91 ms. Allocated memory is still 138.4 MB. Free memory was 102.6 MB in the beginning and 91.8 MB in the end (delta: 10.8 MB). Peak memory consumption was 10.8 MB. Max. memory is 7.1 GB. [2020-07-20 06:06:04,098 INFO L168 Benchmark]: Boogie Preprocessor took 132.38 ms. Allocated memory was 138.4 MB in the beginning and 201.9 MB in the end (delta: 63.4 MB). Free memory was 91.8 MB in the beginning and 179.2 MB in the end (delta: -87.4 MB). Peak memory consumption was 14.1 MB. Max. memory is 7.1 GB. [2020-07-20 06:06:04,099 INFO L168 Benchmark]: RCFGBuilder took 391.52 ms. Allocated memory is still 201.9 MB. Free memory was 179.2 MB in the beginning and 158.9 MB in the end (delta: 20.4 MB). Peak memory consumption was 20.4 MB. Max. memory is 7.1 GB. [2020-07-20 06:06:04,099 INFO L168 Benchmark]: TraceAbstraction took 1284.99 ms. Allocated memory was 201.9 MB in the beginning and 235.4 MB in the end (delta: 33.6 MB). Free memory was 158.9 MB in the beginning and 203.0 MB in the end (delta: -44.1 MB). Peak memory consumption was 78.0 MB. Max. memory is 7.1 GB. [2020-07-20 06:06:04,104 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 138.4 MB. Free memory is still 121.1 MB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 318.91 ms. Allocated memory is still 138.4 MB. Free memory was 102.6 MB in the beginning and 91.8 MB in the end (delta: 10.8 MB). Peak memory consumption was 10.8 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 132.38 ms. Allocated memory was 138.4 MB in the beginning and 201.9 MB in the end (delta: 63.4 MB). Free memory was 91.8 MB in the beginning and 179.2 MB in the end (delta: -87.4 MB). Peak memory consumption was 14.1 MB. Max. memory is 7.1 GB. * RCFGBuilder took 391.52 ms. Allocated memory is still 201.9 MB. Free memory was 179.2 MB in the beginning and 158.9 MB in the end (delta: 20.4 MB). Peak memory consumption was 20.4 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1284.99 ms. Allocated memory was 201.9 MB in the beginning and 235.4 MB in the end (delta: 33.6 MB). Free memory was 158.9 MB in the beginning and 203.0 MB in the end (delta: -44.1 MB). Peak memory consumption was 78.0 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)=10, N=0] [L21] N = __VERIFIER_nondet_int() [L22] COND FALSE !(N <= 0) VAL [\old(N)=0, N=1] [L23] CALL assume_abort_if_not(N <= 2147483647/sizeof(int)) VAL [\old(cond)=1, \old(N)=0, N=1] [L11] COND FALSE !(!cond) VAL [\old(cond)=1, \old(N)=0, cond=1, N=1] [L23] RET assume_abort_if_not(N <= 2147483647/sizeof(int)) VAL [\old(N)=0, N=1] [L25] int i; [L26] long long sum[1]; [L27] long long *a = malloc(sizeof(long long)*N); [L28] long long *b = malloc(sizeof(long long)*N); [L30] sum[0] = 0 [L31] i=0 VAL [\old(N)=0, a={-1:0}, b={4:0}, i=0, malloc(sizeof(long long)*N)={4:0}, malloc(sizeof(long long)*N)={-1:0}, N=1, sum={6:0}] [L31] COND TRUE i