/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/array-fpi/res2of.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-3af5e1f [2020-09-04 13:42:38,296 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-04 13:42:38,301 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-04 13:42:38,344 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-04 13:42:38,344 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-04 13:42:38,352 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-04 13:42:38,355 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-04 13:42:38,359 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-04 13:42:38,362 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-04 13:42:38,365 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-04 13:42:38,366 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-04 13:42:38,367 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-04 13:42:38,367 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-04 13:42:38,370 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-04 13:42:38,372 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-04 13:42:38,374 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-04 13:42:38,375 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-04 13:42:38,376 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-04 13:42:38,378 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-04 13:42:38,386 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-04 13:42:38,389 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-04 13:42:38,390 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-04 13:42:38,391 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-04 13:42:38,392 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-04 13:42:38,409 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-04 13:42:38,409 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-04 13:42:38,409 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-04 13:42:38,410 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-04 13:42:38,414 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-04 13:42:38,415 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-04 13:42:38,415 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-04 13:42:38,416 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-04 13:42:38,417 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-04 13:42:38,418 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-04 13:42:38,419 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-04 13:42:38,419 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-04 13:42:38,420 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-04 13:42:38,420 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-04 13:42:38,420 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-04 13:42:38,421 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-04 13:42:38,422 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-04 13:42:38,423 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 [2020-09-04 13:42:38,447 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-04 13:42:38,447 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-04 13:42:38,448 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-04 13:42:38,449 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-04 13:42:38,449 INFO L138 SettingsManager]: * Use SBE=true [2020-09-04 13:42:38,449 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-04 13:42:38,449 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-04 13:42:38,450 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-04 13:42:38,450 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-04 13:42:38,450 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-04 13:42:38,450 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-04 13:42:38,450 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-04 13:42:38,450 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-04 13:42:38,451 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-04 13:42:38,451 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-04 13:42:38,451 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-04 13:42:38,451 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-04 13:42:38,451 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-04 13:42:38,452 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-04 13:42:38,452 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-04 13:42:38,452 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-04 13:42:38,452 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-04 13:42:38,453 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-04 13:42:38,453 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-04 13:42:38,453 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-04 13:42:38,453 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-04 13:42:38,453 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-04 13:42:38,453 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-04 13:42:38,454 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-04 13:42:38,454 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-09-04 13:42:38,915 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-04 13:42:38,941 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-04 13:42:38,945 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-04 13:42:38,947 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-04 13:42:38,950 INFO L275 PluginConnector]: CDTParser initialized [2020-09-04 13:42:38,951 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-fpi/res2of.c [2020-09-04 13:42:39,048 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/68be24221/9ee62d49290944849637661217e769b4/FLAG3cafa36b2 [2020-09-04 13:42:39,575 INFO L306 CDTParser]: Found 1 translation units. [2020-09-04 13:42:39,576 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/array-fpi/res2of.c [2020-09-04 13:42:39,584 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/68be24221/9ee62d49290944849637661217e769b4/FLAG3cafa36b2 [2020-09-04 13:42:39,923 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/68be24221/9ee62d49290944849637661217e769b4 [2020-09-04 13:42:39,941 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-04 13:42:39,944 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-04 13:42:39,946 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-04 13:42:39,946 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-04 13:42:39,950 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-04 13:42:39,952 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.09 01:42:39" (1/1) ... [2020-09-04 13:42:39,957 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@31d5df5d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 01:42:39, skipping insertion in model container [2020-09-04 13:42:39,957 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.09 01:42:39" (1/1) ... [2020-09-04 13:42:39,967 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-04 13:42:40,000 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-04 13:42:40,239 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-04 13:42:40,251 INFO L203 MainTranslator]: Completed pre-run [2020-09-04 13:42:40,280 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-04 13:42:40,299 INFO L208 MainTranslator]: Completed translation [2020-09-04 13:42:40,299 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 01:42:40 WrapperNode [2020-09-04 13:42:40,299 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-04 13:42:40,300 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-04 13:42:40,300 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-04 13:42:40,300 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-04 13:42:40,394 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 01:42:40" (1/1) ... [2020-09-04 13:42:40,394 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 01:42:40" (1/1) ... [2020-09-04 13:42:40,413 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 01:42:40" (1/1) ... [2020-09-04 13:42:40,414 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 01:42:40" (1/1) ... [2020-09-04 13:42:40,430 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 01:42:40" (1/1) ... [2020-09-04 13:42:40,442 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 01:42:40" (1/1) ... [2020-09-04 13:42:40,445 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 01:42:40" (1/1) ... [2020-09-04 13:42:40,448 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-04 13:42:40,449 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-04 13:42:40,449 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-04 13:42:40,449 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-04 13:42:40,451 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 01:42:40" (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 [2020-09-04 13:42:40,531 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-04 13:42:40,532 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-04 13:42:40,532 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-09-04 13:42:40,532 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-09-04 13:42:40,532 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-04 13:42:40,532 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-04 13:42:40,533 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-09-04 13:42:40,533 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-09-04 13:42:40,533 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-09-04 13:42:40,533 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-04 13:42:40,533 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-09-04 13:42:40,534 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-04 13:42:40,534 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-09-04 13:42:40,534 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-09-04 13:42:40,534 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-04 13:42:40,534 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-09-04 13:42:40,535 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-04 13:42:40,535 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-04 13:42:40,535 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-04 13:42:40,910 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-04 13:42:40,911 INFO L295 CfgBuilder]: Removed 6 assume(true) statements. [2020-09-04 13:42:40,916 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.09 01:42:40 BoogieIcfgContainer [2020-09-04 13:42:40,917 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-04 13:42:40,918 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-04 13:42:40,918 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-04 13:42:40,922 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-04 13:42:40,922 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 04.09 01:42:39" (1/3) ... [2020-09-04 13:42:40,923 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2ac18b70 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.09 01:42:40, skipping insertion in model container [2020-09-04 13:42:40,923 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 01:42:40" (2/3) ... [2020-09-04 13:42:40,924 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2ac18b70 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.09 01:42:40, skipping insertion in model container [2020-09-04 13:42:40,924 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.09 01:42:40" (3/3) ... [2020-09-04 13:42:40,926 INFO L109 eAbstractionObserver]: Analyzing ICFG res2of.c [2020-09-04 13:42:40,936 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-09-04 13:42:40,945 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-04 13:42:40,964 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-04 13:42:40,991 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-04 13:42:40,991 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-04 13:42:40,991 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-09-04 13:42:40,992 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-04 13:42:40,992 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-04 13:42:40,992 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-04 13:42:40,992 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-04 13:42:40,992 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-04 13:42:41,015 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states. [2020-09-04 13:42:41,023 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-09-04 13:42:41,023 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 13:42:41,024 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] [2020-09-04 13:42:41,024 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 13:42:41,031 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 13:42:41,031 INFO L82 PathProgramCache]: Analyzing trace with hash 1797528887, now seen corresponding path program 1 times [2020-09-04 13:42:41,043 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-04 13:42:41,044 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [179734253] [2020-09-04 13:42:41,044 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 13:42:41,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:42:41,291 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 13:42:41,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:42:41,311 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-09-04 13:42:41,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:42:41,329 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-04 13:42:41,330 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [179734253] [2020-09-04 13:42:41,331 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 13:42:41,331 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-04 13:42:41,332 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1396404520] [2020-09-04 13:42:41,342 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-04 13:42:41,343 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-04 13:42:41,360 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-04 13:42:41,361 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-04 13:42:41,363 INFO L87 Difference]: Start difference. First operand 43 states. Second operand 3 states. [2020-09-04 13:42:41,537 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 13:42:41,538 INFO L93 Difference]: Finished difference Result 76 states and 103 transitions. [2020-09-04 13:42:41,539 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-04 13:42:41,540 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 29 [2020-09-04 13:42:41,541 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 13:42:41,553 INFO L225 Difference]: With dead ends: 76 [2020-09-04 13:42:41,553 INFO L226 Difference]: Without dead ends: 36 [2020-09-04 13:42:41,558 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 [2020-09-04 13:42:41,581 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2020-09-04 13:42:41,609 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 36. [2020-09-04 13:42:41,610 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2020-09-04 13:42:41,612 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 41 transitions. [2020-09-04 13:42:41,615 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 41 transitions. Word has length 29 [2020-09-04 13:42:41,615 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 13:42:41,615 INFO L479 AbstractCegarLoop]: Abstraction has 36 states and 41 transitions. [2020-09-04 13:42:41,615 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-04 13:42:41,616 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 41 transitions. [2020-09-04 13:42:41,617 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-09-04 13:42:41,617 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 13:42:41,617 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] [2020-09-04 13:42:41,618 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-04 13:42:41,618 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 13:42:41,619 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 13:42:41,619 INFO L82 PathProgramCache]: Analyzing trace with hash 120259143, now seen corresponding path program 1 times [2020-09-04 13:42:41,619 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-04 13:42:41,620 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1789784583] [2020-09-04 13:42:41,620 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 13:42:41,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:42:41,745 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 13:42:41,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:42:41,753 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-09-04 13:42:41,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:42:41,763 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-04 13:42:41,764 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1789784583] [2020-09-04 13:42:41,764 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 13:42:41,764 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-04 13:42:41,765 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [472595204] [2020-09-04 13:42:41,767 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-04 13:42:41,767 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-04 13:42:41,768 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-04 13:42:41,768 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-04 13:42:41,768 INFO L87 Difference]: Start difference. First operand 36 states and 41 transitions. Second operand 5 states. [2020-09-04 13:42:41,947 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 13:42:41,948 INFO L93 Difference]: Finished difference Result 69 states and 84 transitions. [2020-09-04 13:42:41,948 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-04 13:42:41,948 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 29 [2020-09-04 13:42:41,949 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 13:42:41,950 INFO L225 Difference]: With dead ends: 69 [2020-09-04 13:42:41,950 INFO L226 Difference]: Without dead ends: 48 [2020-09-04 13:42:41,952 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 [2020-09-04 13:42:41,952 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2020-09-04 13:42:41,961 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 42. [2020-09-04 13:42:41,962 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2020-09-04 13:42:41,963 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 47 transitions. [2020-09-04 13:42:41,963 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 47 transitions. Word has length 29 [2020-09-04 13:42:41,964 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 13:42:41,964 INFO L479 AbstractCegarLoop]: Abstraction has 42 states and 47 transitions. [2020-09-04 13:42:41,964 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-04 13:42:41,964 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 47 transitions. [2020-09-04 13:42:41,965 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2020-09-04 13:42:41,966 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 13:42:41,966 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 13:42:41,966 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-04 13:42:41,966 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 13:42:41,967 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 13:42:41,967 INFO L82 PathProgramCache]: Analyzing trace with hash -774790125, now seen corresponding path program 1 times [2020-09-04 13:42:41,967 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-04 13:42:41,968 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [163282691] [2020-09-04 13:42:41,968 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 13:42:42,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-04 13:42:42,088 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-09-04 13:42:42,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-04 13:42:42,154 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-09-04 13:42:42,197 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-09-04 13:42:42,197 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-09-04 13:42:42,197 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-04 13:42:42,272 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 04.09 01:42:42 BoogieIcfgContainer [2020-09-04 13:42:42,272 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-04 13:42:42,276 INFO L168 Benchmark]: Toolchain (without parser) took 2331.78 ms. Allocated memory was 138.9 MB in the beginning and 233.8 MB in the end (delta: 94.9 MB). Free memory was 102.4 MB in the beginning and 202.2 MB in the end (delta: -99.8 MB). Peak memory consumption was 85.7 MB. Max. memory is 7.1 GB. [2020-09-04 13:42:42,277 INFO L168 Benchmark]: CDTParser took 1.52 ms. Allocated memory is still 138.9 MB. Free memory was 120.5 MB in the beginning and 120.3 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-09-04 13:42:42,278 INFO L168 Benchmark]: CACSL2BoogieTranslator took 354.00 ms. Allocated memory is still 138.9 MB. Free memory was 102.2 MB in the beginning and 91.2 MB in the end (delta: 11.0 MB). Peak memory consumption was 11.0 MB. Max. memory is 7.1 GB. [2020-09-04 13:42:42,279 INFO L168 Benchmark]: Boogie Preprocessor took 148.09 ms. Allocated memory was 138.9 MB in the beginning and 201.9 MB in the end (delta: 62.9 MB). Free memory was 91.2 MB in the beginning and 179.0 MB in the end (delta: -87.8 MB). Peak memory consumption was 12.5 MB. Max. memory is 7.1 GB. [2020-09-04 13:42:42,280 INFO L168 Benchmark]: RCFGBuilder took 468.09 ms. Allocated memory is still 201.9 MB. Free memory was 179.0 MB in the beginning and 158.2 MB in the end (delta: 20.8 MB). Peak memory consumption was 20.8 MB. Max. memory is 7.1 GB. [2020-09-04 13:42:42,281 INFO L168 Benchmark]: TraceAbstraction took 1354.92 ms. Allocated memory was 201.9 MB in the beginning and 233.8 MB in the end (delta: 32.0 MB). Free memory was 157.5 MB in the beginning and 202.2 MB in the end (delta: -44.7 MB). Peak memory consumption was 77.9 MB. Max. memory is 7.1 GB. [2020-09-04 13:42:42,285 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 1.52 ms. Allocated memory is still 138.9 MB. Free memory was 120.5 MB in the beginning and 120.3 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 354.00 ms. Allocated memory is still 138.9 MB. Free memory was 102.2 MB in the beginning and 91.2 MB in the end (delta: 11.0 MB). Peak memory consumption was 11.0 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 148.09 ms. Allocated memory was 138.9 MB in the beginning and 201.9 MB in the end (delta: 62.9 MB). Free memory was 91.2 MB in the beginning and 179.0 MB in the end (delta: -87.8 MB). Peak memory consumption was 12.5 MB. Max. memory is 7.1 GB. * RCFGBuilder took 468.09 ms. Allocated memory is still 201.9 MB. Free memory was 179.0 MB in the beginning and 158.2 MB in the end (delta: 20.8 MB). Peak memory consumption was 20.8 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1354.92 ms. Allocated memory was 201.9 MB in the beginning and 233.8 MB in the end (delta: 32.0 MB). Free memory was 157.5 MB in the beginning and 202.2 MB in the end (delta: -44.7 MB). Peak memory consumption was 77.9 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 13]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L17] int N; VAL [\old(N)=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] int *a = malloc(sizeof(int)*N); [L28] int *b = malloc(sizeof(int)*N); [L29] int *c = malloc(sizeof(int)*N); [L31] sum[0] = 0 [L32] i=0 VAL [\old(N)=0, a={-2:0}, b={5:0}, c={-1:0}, i=0, malloc(sizeof(int)*N)={-1:0}, malloc(sizeof(int)*N)={-2:0}, malloc(sizeof(int)*N)={5:0}, N=1, sum={7:0}] [L32] COND TRUE i