/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 FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options enumeration-timeout=5 --traceabstraction.additional.smt.options interpolation-heuristic=BIGGEST -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/array-fpi/eqn4f.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-5644d1e-m [2020-08-18 17:59:57,368 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-18 17:59:57,371 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-18 17:59:57,408 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-18 17:59:57,408 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-18 17:59:57,416 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-18 17:59:57,419 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-18 17:59:57,422 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-18 17:59:57,424 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-18 17:59:57,426 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-18 17:59:57,427 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-18 17:59:57,428 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-18 17:59:57,428 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-18 17:59:57,431 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-18 17:59:57,433 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-18 17:59:57,434 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-18 17:59:57,435 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-18 17:59:57,436 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-18 17:59:57,438 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-18 17:59:57,445 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-18 17:59:57,447 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-18 17:59:57,448 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-18 17:59:57,449 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-18 17:59:57,449 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-18 17:59:57,461 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-08-18 17:59:57,478 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-18 17:59:57,479 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-18 17:59:57,480 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-18 17:59:57,480 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-08-18 17:59:57,502 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-18 17:59:57,502 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-18 17:59:57,503 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-18 17:59:57,504 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-18 17:59:57,504 INFO L138 SettingsManager]: * Use SBE=true [2020-08-18 17:59:57,504 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-18 17:59:57,504 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-18 17:59:57,504 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-18 17:59:57,505 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-18 17:59:57,505 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-18 17:59:57,505 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-18 17:59:57,505 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-18 17:59:57,505 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-18 17:59:57,506 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-18 17:59:57,506 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-18 17:59:57,506 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-18 17:59:57,506 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-18 17:59:57,506 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-18 17:59:57,507 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-18 17:59:57,507 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-18 17:59:57,507 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-18 17:59:57,507 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-18 17:59:57,508 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-18 17:59:57,508 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-18 17:59:57,508 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-18 17:59:57,508 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-18 17:59:57,508 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-18 17:59:57,508 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-18 17:59:57,509 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-18 17:59:57,509 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=BIGGEST; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=BIGGEST; [2020-08-18 17:59:57,790 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-18 17:59:57,807 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-18 17:59:57,810 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-18 17:59:57,811 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-18 17:59:57,812 INFO L275 PluginConnector]: CDTParser initialized [2020-08-18 17:59:57,812 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-fpi/eqn4f.c [2020-08-18 17:59:57,883 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/7e3c3194c/bfcf0ddb41154b8cace7639fb3abe89a/FLAG5dc6327d3 [2020-08-18 17:59:58,326 INFO L306 CDTParser]: Found 1 translation units. [2020-08-18 17:59:58,327 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/array-fpi/eqn4f.c [2020-08-18 17:59:58,334 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/7e3c3194c/bfcf0ddb41154b8cace7639fb3abe89a/FLAG5dc6327d3 [2020-08-18 17:59:58,765 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/7e3c3194c/bfcf0ddb41154b8cace7639fb3abe89a [2020-08-18 17:59:58,775 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-18 17:59:58,777 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-18 17:59:58,778 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-18 17:59:58,778 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-18 17:59:58,782 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-18 17:59:58,784 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.08 05:59:58" (1/1) ... [2020-08-18 17:59:58,787 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@34fa96a6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 05:59:58, skipping insertion in model container [2020-08-18 17:59:58,787 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.08 05:59:58" (1/1) ... [2020-08-18 17:59:58,796 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-18 17:59:58,816 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-18 17:59:59,010 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-18 17:59:59,019 INFO L203 MainTranslator]: Completed pre-run [2020-08-18 17:59:59,042 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-18 17:59:59,062 INFO L208 MainTranslator]: Completed translation [2020-08-18 17:59:59,063 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 05:59:59 WrapperNode [2020-08-18 17:59:59,063 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-18 17:59:59,064 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-18 17:59:59,064 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-18 17:59:59,064 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-18 17:59:59,155 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 05:59:59" (1/1) ... [2020-08-18 17:59:59,155 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 05:59:59" (1/1) ... [2020-08-18 17:59:59,164 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 05:59:59" (1/1) ... [2020-08-18 17:59:59,164 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 05:59:59" (1/1) ... [2020-08-18 17:59:59,173 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 05:59:59" (1/1) ... [2020-08-18 17:59:59,178 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 05:59:59" (1/1) ... [2020-08-18 17:59:59,180 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 05:59:59" (1/1) ... [2020-08-18 17:59:59,182 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-18 17:59:59,183 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-18 17:59:59,183 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-18 17:59:59,183 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-18 17:59:59,184 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 05:59:59" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-18 17:59:59,254 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-18 17:59:59,254 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-18 17:59:59,254 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-08-18 17:59:59,255 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-08-18 17:59:59,255 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-18 17:59:59,256 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-18 17:59:59,256 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-08-18 17:59:59,257 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-08-18 17:59:59,257 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-08-18 17:59:59,257 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-18 17:59:59,257 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-18 17:59:59,257 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-18 17:59:59,257 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-18 17:59:59,258 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-18 17:59:59,259 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-18 17:59:59,259 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-18 17:59:59,259 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-18 17:59:59,259 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-18 17:59:59,514 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-18 17:59:59,514 INFO L295 CfgBuilder]: Removed 3 assume(true) statements. [2020-08-18 17:59:59,519 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.08 05:59:59 BoogieIcfgContainer [2020-08-18 17:59:59,519 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-18 17:59:59,520 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-18 17:59:59,521 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-18 17:59:59,524 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-18 17:59:59,524 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.08 05:59:58" (1/3) ... [2020-08-18 17:59:59,525 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4c0e886c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.08 05:59:59, skipping insertion in model container [2020-08-18 17:59:59,525 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 05:59:59" (2/3) ... [2020-08-18 17:59:59,526 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4c0e886c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.08 05:59:59, skipping insertion in model container [2020-08-18 17:59:59,526 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.08 05:59:59" (3/3) ... [2020-08-18 17:59:59,527 INFO L109 eAbstractionObserver]: Analyzing ICFG eqn4f.c [2020-08-18 17:59:59,539 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-18 17:59:59,550 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-18 17:59:59,569 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-18 17:59:59,633 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-18 17:59:59,633 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-18 17:59:59,633 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-18 17:59:59,633 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-18 17:59:59,634 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-18 17:59:59,634 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-18 17:59:59,634 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-18 17:59:59,634 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-18 17:59:59,656 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states. [2020-08-18 17:59:59,663 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-08-18 17:59:59,663 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 17:59:59,664 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 17:59:59,665 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 17:59:59,674 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 17:59:59,675 INFO L82 PathProgramCache]: Analyzing trace with hash -1314760119, now seen corresponding path program 1 times [2020-08-18 17:59:59,682 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 17:59:59,682 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [114775157] [2020-08-18 17:59:59,682 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 17:59:59,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:59:59,866 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 17:59:59,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:59:59,876 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-08-18 17:59:59,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:59:59,884 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 17:59:59,885 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [114775157] [2020-08-18 17:59:59,887 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 17:59:59,887 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-18 17:59:59,888 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1872943419] [2020-08-18 17:59:59,894 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-18 17:59:59,894 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 17:59:59,905 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-18 17:59:59,906 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-18 17:59:59,908 INFO L87 Difference]: Start difference. First operand 34 states. Second operand 3 states. [2020-08-18 18:00:00,029 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 18:00:00,029 INFO L93 Difference]: Finished difference Result 58 states and 73 transitions. [2020-08-18 18:00:00,030 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-18 18:00:00,032 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 22 [2020-08-18 18:00:00,032 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 18:00:00,042 INFO L225 Difference]: With dead ends: 58 [2020-08-18 18:00:00,042 INFO L226 Difference]: Without dead ends: 29 [2020-08-18 18:00:00,046 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-18 18:00:00,067 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2020-08-18 18:00:00,088 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2020-08-18 18:00:00,089 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2020-08-18 18:00:00,091 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 31 transitions. [2020-08-18 18:00:00,092 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 31 transitions. Word has length 22 [2020-08-18 18:00:00,093 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 18:00:00,093 INFO L479 AbstractCegarLoop]: Abstraction has 29 states and 31 transitions. [2020-08-18 18:00:00,093 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-18 18:00:00,094 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 31 transitions. [2020-08-18 18:00:00,094 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-08-18 18:00:00,095 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 18:00:00,095 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 18:00:00,096 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-18 18:00:00,096 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 18:00:00,096 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 18:00:00,097 INFO L82 PathProgramCache]: Analyzing trace with hash -1901566133, now seen corresponding path program 1 times [2020-08-18 18:00:00,097 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 18:00:00,098 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1567964426] [2020-08-18 18:00:00,098 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 18:00:00,122 ERROR L271 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-08-18 18:00:00,122 WARN L168 FreeRefinementEngine]: Strategy FIXED_PREFERENCES was unsuccessful and could not determine trace feasibility [2020-08-18 18:00:00,122 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-08-18 18:00:00,127 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-18 18:00:00,143 WARN L231 ceAbstractionStarter]: Unable to decide correctness. Please check the following counterexample manually. [2020-08-18 18:00:00,144 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.08 06:00:00 BoogieIcfgContainer [2020-08-18 18:00:00,144 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-18 18:00:00,147 INFO L168 Benchmark]: Toolchain (without parser) took 1369.55 ms. Allocated memory was 140.5 MB in the beginning and 202.9 MB in the end (delta: 62.4 MB). Free memory was 103.1 MB in the beginning and 132.2 MB in the end (delta: -29.0 MB). Peak memory consumption was 33.4 MB. Max. memory is 7.1 GB. [2020-08-18 18:00:00,148 INFO L168 Benchmark]: CDTParser took 0.16 ms. Allocated memory is still 140.5 MB. Free memory was 122.1 MB in the beginning and 121.9 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-08-18 18:00:00,149 INFO L168 Benchmark]: CACSL2BoogieTranslator took 285.91 ms. Allocated memory is still 140.5 MB. Free memory was 102.9 MB in the beginning and 92.5 MB in the end (delta: 10.4 MB). Peak memory consumption was 10.4 MB. Max. memory is 7.1 GB. [2020-08-18 18:00:00,150 INFO L168 Benchmark]: Boogie Preprocessor took 118.32 ms. Allocated memory was 140.5 MB in the beginning and 202.9 MB in the end (delta: 62.4 MB). Free memory was 92.5 MB in the beginning and 180.2 MB in the end (delta: -87.7 MB). Peak memory consumption was 12.5 MB. Max. memory is 7.1 GB. [2020-08-18 18:00:00,151 INFO L168 Benchmark]: RCFGBuilder took 336.56 ms. Allocated memory is still 202.9 MB. Free memory was 180.2 MB in the beginning and 164.0 MB in the end (delta: 16.3 MB). Peak memory consumption was 16.3 MB. Max. memory is 7.1 GB. [2020-08-18 18:00:00,152 INFO L168 Benchmark]: TraceAbstraction took 623.75 ms. Allocated memory is still 202.9 MB. Free memory was 163.3 MB in the beginning and 132.2 MB in the end (delta: 31.1 MB). Peak memory consumption was 31.1 MB. Max. memory is 7.1 GB. [2020-08-18 18:00:00,156 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16 ms. Allocated memory is still 140.5 MB. Free memory was 122.1 MB in the beginning and 121.9 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 285.91 ms. Allocated memory is still 140.5 MB. Free memory was 102.9 MB in the beginning and 92.5 MB in the end (delta: 10.4 MB). Peak memory consumption was 10.4 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 118.32 ms. Allocated memory was 140.5 MB in the beginning and 202.9 MB in the end (delta: 62.4 MB). Free memory was 92.5 MB in the beginning and 180.2 MB in the end (delta: -87.7 MB). Peak memory consumption was 12.5 MB. Max. memory is 7.1 GB. * RCFGBuilder took 336.56 ms. Allocated memory is still 202.9 MB. Free memory was 180.2 MB in the beginning and 164.0 MB in the end (delta: 16.3 MB). Peak memory consumption was 16.3 MB. Max. memory is 7.1 GB. * TraceAbstraction took 623.75 ms. Allocated memory is still 202.9 MB. Free memory was 163.3 MB in the beginning and 132.2 MB in the end (delta: 31.1 MB). Peak memory consumption was 31.1 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 13]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: unable to decide satisfiability of path constraint. Possible FailurePath: [L17] int N; [L21] N = __VERIFIER_nondet_int() [L22] COND FALSE !(N <= 0) [L23] CALL assume_abort_if_not(N <= 2147483647/sizeof(int)) [L11] COND FALSE !(!cond) [L23] RET assume_abort_if_not(N <= 2147483647/sizeof(int)) [L25] int i; [L26] long long *a = malloc(sizeof(long long)*N); [L27] long long *b = malloc(sizeof(long long)*N); [L29] a[0] = 8 [L30] b[0] = 0 [L31] i=1 [L31] COND FALSE !(i